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Diffstat (limited to 'source/luametatex/source/lua/lmttexlib.c')
| -rw-r--r-- | source/luametatex/source/lua/lmttexlib.c | 5580 |
1 files changed, 5580 insertions, 0 deletions
diff --git a/source/luametatex/source/lua/lmttexlib.c b/source/luametatex/source/lua/lmttexlib.c new file mode 100644 index 000000000..12510206a --- /dev/null +++ b/source/luametatex/source/lua/lmttexlib.c @@ -0,0 +1,5580 @@ +/* + See license.txt in the root of this project. +*/ + +/* + + This module deals with access to some if the internal quanities of \TEX, like registers, + internal variables and all kind of lists. Because we provide access by name and/or number + (index) there is quite a bit of code here, and sometimes if can look a bit confusing. + + The code here differs from \LUATEX\ in the sense that there are some more checks, a bit + more abstraction, more access and better performance. What we see here is the result of + years of experimenting and usage in \CONTEXT. + + A remark about some of the special node lists that one can query: because some start with + a so called |temp| node, we have to set the |prev| link to |nil| because otherwise at the + \LUA\ end we expose that |temp| node and users are not suposed to touch them! In the setter + no |prev| link is set so we can presume that it's not used later on anyway; this is because + original \TEX\ has no |prev| links. + + There is still room for improvement but I'll deal with that when I have a reason (read: when + I need something). + +*/ + +# include "luametatex.h" + +/*tex + Due to the nature of the accessors, this is the module with most metatables. However, we + provide getters and setters too. Users can choose what they like most. +*/ + +# define TEX_METATABLE_ATTRIBUTE "tex.attribute" +# define TEX_METATABLE_SKIP "tex.skip" +# define TEX_METATABLE_GLUE "tex.glue" +# define TEX_METATABLE_MUSKIP "tex.muskip" +# define TEX_METATABLE_MUGLUE "tex.muglue" +# define TEX_METATABLE_DIMEN "tex.dimen" +# define TEX_METATABLE_COUNT "tex.count" +# define TEX_METATABLE_TOKS "tex.toks" +# define TEX_METATABLE_BOX "tex.box" +# define TEX_METATABLE_SFCODE "tex.sfcode" +# define TEX_METATABLE_LCCODE "tex.lccode" +# define TEX_METATABLE_UCCODE "tex.uccode" +# define TEX_METATABLE_HCCODE "tex.hccode" +# define TEX_METATABLE_HMCODE "tex.hmcode" +# define TEX_METATABLE_CATCODE "tex.catcode" +# define TEX_METATABLE_MATHCODE "tex.mathcode" +# define TEX_METATABLE_DELCODE "tex.delcode" +# define TEX_METATABLE_LISTS "tex.lists" +# define TEX_METATABLE_NEST "tex.nest" + +# define TEX_METATABLE_TEX "tex.tex" + +# define TEX_NEST_INSTANCE "tex.nest.instance" + +/*tex Let's share these. */ + +static void texlib_aux_show_box_index_error(lua_State *L) +{ + luaL_error(L, "invalid index passed, range 0.." LMT_TOSTRING(max_box_register_index) " or name expected"); +} + +static void texlib_aux_show_character_error(lua_State *L, int i) +{ + luaL_error(L, "invalid character value %d passed, range 0.." LMT_TOSTRING(max_character_code), i); +} + +static void texlib_aux_show_catcode_error(lua_State *L, int i) +{ + luaL_error(L, "invalid catcode %d passed, range 0.." LMT_TOSTRING(max_category_code), i); +} + +static void texlib_aux_show_family_error(lua_State *L, int i) +{ + luaL_error(L, "invalid family %d passed, range 0.." LMT_TOSTRING(max_math_family_index), i); +} + +static void texlib_aux_show_class_error(lua_State *L, int i) +{ + luaL_error(L, "invalid class %d passed, range 0.." LMT_TOSTRING(max_math_class_code), i); +} + +static void texlib_aux_show_half_error(lua_State *L, int i) +{ + luaL_error(L, "invalid value %d passed, range 0.." LMT_TOSTRING(max_half_value), i); +} + +/*tex + + The rope model dates from the time that we had multiple \LUA\ instances so probably we can + simplify it a bit. On the other hand, it works, and also is upgraded for nodes, tokens and some + caching, so there is no real need to change anything now. A complication is anyway that input + states can nest and any change can mess it up. + + We use a flag to indicate the kind of data that we are dealing with: + + \starttabulate + \NC 0 \NC string \NC \NR + \NC 1 \NC char \NC \NR + \NC 2 \NC token \NC \NR + \NC 3 \NC node \NC \NR + \stoptabulate + + By treating simple \ASCII\ characters special we prevent mallocs. We also pack small strings if + only because we have the room available anyway (due to padding). + + For quite a while we used to have this: + + \starttyping + typedef struct spindle_char { + unsigned char c1, c2, c3, c4; + } spindle_char; + + typedef union spindle_data { + spindle_char c; + halfword h; + } spindle_data; + \stopttyping + + The spindle and rope terminology was introduced by Taco early in the development of \LUATEX, + but in the meantime the datastructures have been adapted to deal with tokens and nodes. There + are also quite some optimizations in performance and memort usage (e.g. for small strings and + single characters). + +*/ + +# define FULL_LINE 0 +# define PARTIAL_LINE 1 +# define PACKED_SIZE 8 +# define INITIAL_SIZE 32 +# define MAX_ROPE_CACHE 5000 + +typedef union spindle_data { + unsigned char c[PACKED_SIZE]; + halfword h; + char *t; +} spindle_data; + +typedef struct spindle_rope { +// char *text; + void *next; + union { + unsigned int tsize; + halfword tail; + }; + unsigned char kind; + unsigned char partial; + short cattable; + spindle_data data; + /* alignment, not needed when we have c[PACKED_SIZE] */ + /* int padding; */ +} spindle_rope; + +typedef struct spindle { + spindle_rope *head; + spindle_rope *tail; + int complete; + /* alignment */ + int padding; +} spindle; + +typedef struct spindle_state_info { + int spindle_size; + int spindle_index; + spindle *spindles; + spindle_rope *rope_cache; + int rope_count; + /* alignment */ + int padding; +} spindle_state_info ; + +static spindle_state_info lmt_spindle_state = { + .spindle_size = 0, + .spindle_index = 0, + .spindles = NULL, + .rope_cache = NULL, + .rope_count = 0, + .padding = 0 +}; + +# define write_spindle lmt_spindle_state.spindles[lmt_spindle_state.spindle_index] +# define read_spindle lmt_spindle_state.spindles[lmt_spindle_state.spindle_index - 1] + +inline static void texlib_aux_reset_spindle(int i) +{ + lmt_spindle_state.spindles[i].head = NULL; + lmt_spindle_state.spindles[i].tail = NULL; + lmt_spindle_state.spindles[i].complete = 0; +} + +/* + + Each rope takes 48 bytes. So, caching some 100 K ropes is not really a problem. In practice we + seldom reach that number anyway. + +*/ + +inline static spindle_rope *texlib_aux_new_rope(void) +{ + spindle_rope *r; + if (lmt_spindle_state.rope_cache) { + r = lmt_spindle_state.rope_cache; + lmt_spindle_state.rope_cache = r->next; + } else { + r = (spindle_rope *) lmt_memory_malloc(sizeof(spindle_rope)); + ++lmt_spindle_state.rope_count; + if (r) { + r->next = NULL; + } else { + tex_overflow_error("spindle", sizeof(spindle_rope)); + } + } + return r; +} + +inline static void texlib_aux_dispose_rope(spindle_rope *r) +{ + if (r) { + if (lmt_spindle_state.rope_count > MAX_ROPE_CACHE) { + lmt_memory_free(r); + --lmt_spindle_state.rope_count; + } else { + r->next = lmt_spindle_state.rope_cache; + lmt_spindle_state.rope_cache = r; + } + } +} + +static void texlib_aux_initialize(void) +{ + lmt_spindle_state.spindles = lmt_memory_malloc(INITIAL_SIZE * sizeof(spindle)); + if (lmt_spindle_state.spindles) { + for (int i = 0; i < INITIAL_SIZE; i++) { + texlib_aux_reset_spindle(i); + } + lmt_spindle_state.spindle_index = 0; + lmt_spindle_state.spindle_size = INITIAL_SIZE; + } else { + tex_overflow_error("spindle", sizeof(spindle)); + } +} + +/*tex + We could convert strings into tokenlists here but conceptually the split is cleaner. +*/ + +static int texlib_aux_store(lua_State *L, int i, int partial, int cattable) +{ + size_t tsize = 0; + spindle_rope *rn = NULL; + unsigned char kind = unset_lua_input; + spindle_data data = { .h = 0 }; + switch (lua_type(L, i)) { + case LUA_TNUMBER: + case LUA_TSTRING: + { + const char *sttemp = lua_tolstring(L, i, &tsize); + if (! partial) { + while (tsize > 0 && sttemp[tsize-1] == ' ') { + tsize--; + } + } + if (tsize > PACKED_SIZE) { + data.t = lmt_memory_malloc(tsize + 1); + kind = string_lua_input; + if (data.t) { + memcpy(data.t, sttemp, (tsize + 1)); + break; + } else { + return 0; + } + } else { + /*tex + We could append to a previous but partial interferes and in practice it then + never can be done. + */ + for (unsigned i = 0; i < tsize; i++) { + /*tex When we end up here we often don't have that many bytes. */ + data.c[i] = (unsigned char) sttemp[i]; + } + kind = packed_lua_input; + } + } + break; + case LUA_TUSERDATA: + { + void *p = lua_touserdata(L, i); + if (p && lua_getmetatable(L, i)) { + lua_get_metatablelua(token_instance); + if (lua_rawequal(L, -1, -2)) { + halfword token = (*((lua_token *) p)).token; + if (token_link(token)) { + /*tex + We cannnot pass a list unless we copy it, alternatively we can bump the ref count + but a quick test didn't work out that well. + */ + token = token_link(token); + if (token) { + /*tex + We're now past the ref count head. Like below we could actually append to a + current rope but so far we seldom end up in here. Maybe I'll do add that later. + */ + halfword t = null; + kind = token_list_lua_input; + data.h = tex_copy_token_list(token, &t); + tsize = t; + } else { + lua_pop(L, 2); + return 0; + } + } else { + /*tex + This is a little (mostly memory) optimization. We use token list instead of adding + single token ropes. That way we also need to push less back into the input. We + check for partial. This optimization is experimental and might go. + */ + if (write_spindle.tail && write_spindle.tail->partial && partial == write_spindle.tail->partial) { + switch (write_spindle.tail->kind) { + case token_lua_input: + /*tex + Okay, we now allocate a token but still pushing into the input later has + less (nesting) overhead then because we process a sequence. + */ + write_spindle.tail->kind = token_list_lua_input; + write_spindle.tail->data.h = tex_store_new_token(null, write_spindle.tail->data.h); + write_spindle.tail->tail = tex_store_new_token(write_spindle.tail->data.h, token_info(token)); + break; + case token_list_lua_input: + /*tex + Normally we have short lists but it still pays off to store the tail + in |tsize| instead of locating the tail each time. + */ + write_spindle.tail->tail = tex_store_new_token(write_spindle.tail->tail, token_info(token)); + break; + default: + goto SINGLE; + } + lmt_token_state.luacstrings++; /* already set */ + write_spindle.complete = 0; /* already set */ + lua_pop(L, 2); + return 1; + } + /*tex The non-optimized case: */ + SINGLE: + kind = token_lua_input; + data.h = token_info(token); + } + lua_pop(L, 2); + } else { + lua_get_metatablelua(node_instance); + if (lua_rawequal(L, -1, -3)) { + kind = node_lua_input; + data.h = *((halfword *) p); + lua_pop(L, 3); + } else { + lua_pop(L, 3); + return 0; + } + } + } else { + return 0; + } + } + break; + default: + return 0; + } + lmt_token_state.luacstrings++; + rn = texlib_aux_new_rope(); + /* set */ + rn->tsize = (unsigned) tsize; + rn->next = NULL; + rn->kind = kind; + rn->partial = (unsigned char) partial; + rn->cattable = (short) cattable; + rn->data = data; + /* add */ + if (write_spindle.head) { + write_spindle.tail->next = rn; + } else { + write_spindle.head = rn; + } + write_spindle.tail = rn; + write_spindle.complete = 0; + return 1; +} + +static void texlib_aux_store_token(halfword token, int partial, int cattable) +{ + spindle_rope *rn = texlib_aux_new_rope(); + /* set */ + rn->tsize = 0; + rn->next = NULL; + rn->kind = token_lua_input; + rn->partial = (unsigned char) partial; + rn->cattable = (short) cattable; + rn->data.h = token; + /* add */ + if (write_spindle.head) { + write_spindle.tail->next = rn; + } else { + write_spindle.head = rn; + } + write_spindle.tail = rn; + write_spindle.complete = 0; + lmt_token_state.luacstrings++; +} + +static void lmx_aux_store_string(char *str, int len, int cattable) +{ + spindle_rope *rn = texlib_aux_new_rope(); + rn->data.h = 0; /* wipes */ + if (len > PACKED_SIZE) { + rn->data.t = lmt_memory_malloc((size_t) len + 1); + if (rn->data.t) { + memcpy(rn->data.t, str, (size_t) len + 1); + } else { + len = 0; + } + rn->kind = string_lua_input; + } else { + for (int i = 0; i < len; i++) { + /* when we end up here we often don't have that many bytes */ + rn->data.c[i] = (unsigned char) str[i]; + } + rn->kind = packed_lua_input; + } + /* set */ + rn->tsize = (unsigned) len; + rn->next = NULL; + rn->partial = FULL_LINE; + rn->cattable = (unsigned char) cattable; + /* add */ + if (write_spindle.head) { + write_spindle.tail->next = rn; + } else { + write_spindle.head = rn; + } + write_spindle.tail = rn; + write_spindle.complete = 0; + lmt_token_state.luacstrings++; +} + +static int texlib_aux_cprint(lua_State *L, int partial, int cattable, int startstrings) +{ + int n = lua_gettop(L); + int t = lua_type(L, startstrings); + if (n > startstrings && cattable != no_catcode_table_preset && t == LUA_TNUMBER) { + cattable = lmt_tointeger(L, startstrings); + ++startstrings; + if (cattable != default_catcode_table_preset && cattable != no_catcode_table_preset && ! tex_valid_catcode_table(cattable)) { + cattable = default_catcode_table_preset; + } + t = lua_type(L, startstrings); + } + if (t == LUA_TTABLE) { + for (int i = 1;; i++) { + lua_rawgeti(L, startstrings, i); + if (texlib_aux_store(L, -1, partial, cattable)) { + lua_pop(L, 1); + } else { + lua_pop(L, 1); + break; + } + } + } else { + for (int i = startstrings; i <= n; i++) { + texlib_aux_store(L, i, partial, cattable); + } + } + return 0; +} + +/*tex + We now feed back to be tokenized input from the \TEX\ end into the same handler as we use for + \LUA. It saves code but more important is that we no longer need the pseudo files and lines + that are kind of inefficient and depend on variable nodes. +*/ + +void lmt_cstring_store(char *str, int len, int cattable) +{ + lmx_aux_store_string(str, len, cattable); +} + +void lmt_tstring_store(strnumber s, int cattable) +{ + lmx_aux_store_string((char *) str_string(s), (int) str_length(s), cattable); +} + +/*tex + This is a bit of a dirty trick, needed for an experiment and it's fast enough for our purpose. +*/ + +void lmt_cstring_print(int cattable, const char *s, int ispartial) +{ + lua_State *L = lmt_lua_state.lua_instance; + int top = lua_gettop(L); + lua_settop(L, 0); + lua_pushinteger(L, cattable); + lua_pushstring(L, s); + texlib_aux_cprint(L, ispartial ? PARTIAL_LINE : FULL_LINE, default_catcode_table_preset, 1); + lua_settop(L, top); +} + +/* lua.write */ + +static int texlib_write(lua_State *L) +{ + return texlib_aux_cprint(L, FULL_LINE, no_catcode_table_preset, 1); +} + +/* lua.print */ + +static int texlib_print(lua_State *L) +{ + return texlib_aux_cprint(L, FULL_LINE, default_catcode_table_preset, 1); +} + +/* lua.sprint */ + +static int texlib_sprint(lua_State *L) +{ + return texlib_aux_cprint(L, PARTIAL_LINE, default_catcode_table_preset, 1); +} + +static int texlib_mprint(lua_State *L) +{ + int ini = 1; + if (tracing_nesting_par > 2) { + tex_local_control_message("entering local control via (run) macro"); + } + texlib_aux_store_token(token_val(end_local_cmd, 0), PARTIAL_LINE, default_catcode_table_preset); + if (lmt_token_state.luacstrings > 0) { + tex_lua_string_start(); + } + if (lua_type(L, 1) == LUA_TSTRING) { + size_t lname = 0; + const char *name = lua_tolstring(L, 1, &lname); + int cs = tex_string_locate(name, lname, 0); + int cmd = eq_type(cs); + if (is_call_cmd(cmd)) { + texlib_aux_store_token(cs_token_flag + cs, PARTIAL_LINE, default_catcode_table_preset); + ++ini; + } else { + tex_local_control_message("invalid (mprint) macro"); + } + } + if (lua_gettop(L) >= ini) { + texlib_aux_cprint(L, PARTIAL_LINE, default_catcode_table_preset, ini); + } + if (tracing_nesting_par > 2) { + tex_local_control_message("entering local control via mprint"); + } + tex_local_control(1); + return 0; +} + +/* we default to obeymode */ + +static int texlib_pushlocal(lua_State *L) +{ + (void) L; + if (tracing_nesting_par > 2) { + tex_local_control_message("pushing local control"); + } + texlib_aux_store_token(token_val(end_local_cmd, 0), PARTIAL_LINE, default_catcode_table_preset); + if (lmt_token_state.luacstrings > 0) { + tex_lua_string_start(); + } + return 0; +} + +static int texlib_poplocal(lua_State *L) +{ + (void) L; + if (tracing_nesting_par > 2) { + tex_local_control_message("entering local control via pop"); + } + tex_local_control(1); + return 0; +} + +/* lua.cprint */ + +static int texlib_cprint(lua_State *L) +{ + /*tex + We map a catcode to a pseudo cattable. So a negative value is a specific catcode with offset 1. + */ + int cattable = lmt_tointeger(L, 1); + if (cattable < 0 || cattable > 15) { + cattable = - 12 - 0xFF ; + } else { + cattable = - cattable - 0xFF; + } + if (lua_type(L, 2) == LUA_TTABLE) { + for (int i = 1; ; i++) { + lua_rawgeti(L, 2, i); + if (texlib_aux_store(L, -1, PARTIAL_LINE, cattable)) { + lua_pop(L, 1); + } else { + lua_pop(L, 1); + break; + } + } + } else { + int n = lua_gettop(L); + for (int i = 2; i <= n; i++) { + texlib_aux_store(L, i, PARTIAL_LINE, cattable); + } + } + return 0; +} + +/* lua.tprint */ + +static int texlib_tprint(lua_State *L) +{ + int n = lua_gettop(L); + for (int i = 1; i <= n; i++) { + int cattable = default_catcode_table_preset; + int startstrings = 1; + if (lua_type(L, i) != LUA_TTABLE) { + luaL_error(L, "no string to print"); + } + lua_pushvalue(L, i); /* the table */ + lua_pushinteger(L, 1); + lua_gettable(L, -2); + if (lua_type(L, -1) == LUA_TNUMBER) { + cattable = lmt_tointeger(L, -1); + startstrings = 2; + if (cattable != default_catcode_table_preset && cattable != no_catcode_table_preset && ! tex_valid_catcode_table(cattable)) { + cattable = default_catcode_table_preset; + } + } + lua_pop(L, 1); + for (int j = startstrings; ; j++) { + lua_pushinteger(L, j); + lua_gettable(L, -2); + if (texlib_aux_store(L, -1, PARTIAL_LINE, cattable)) { + lua_pop(L, 1); + } else { + lua_pop(L, 1); + break; + } + } + lua_pop(L, 1); /* the table */ + } + return 0; +} + +static int texlib_isprintable(lua_State* L) +{ + halfword okay = 0; + switch (lua_type(L, 1)) { + case LUA_TSTRING : + okay = 1; + break; + case LUA_TUSERDATA : + { + if (lua_getmetatable(L, 1)) { + lua_get_metatablelua(token_instance); + if (lua_rawequal(L, -1, -2)) { + okay = 1; + // lua_pop(L, 2); + } else { + lua_get_metatablelua(node_instance); + if (lua_rawequal(L, -1, -3)) { + okay = 1; + } + // lua_pop(L, 3); + } + } + break; + } + } + lua_pushboolean(L, okay); + return 1; +} + +/*tex We actually don't need to copy and could read from the string. */ + +int lmt_cstring_input(halfword *n, int *cattable, int *partial, int *finalline) +{ + spindle_rope *t = read_spindle.head; + int ret = eof_tex_input ; + if (! read_spindle.complete) { + read_spindle.complete = 1; + read_spindle.tail = NULL; + } + if (t) { + switch (t->kind) { + case string_lua_input: + { + if (t->data.t) { + /*tex put that thing in the buffer */ + int strsize = (int) t->tsize; + int newlast = lmt_fileio_state.io_first + strsize; + lmt_fileio_state.io_last = lmt_fileio_state.io_first; + if (tex_room_in_buffer(newlast)) { + memcpy(&lmt_fileio_state.io_buffer[lmt_fileio_state.io_last], &t->data.t[0], sizeof(unsigned char) * strsize); + lmt_fileio_state.io_last = newlast; + lmt_memory_free(t->data.t); + t->data.t = NULL; + } else { + return ret; + } + } + *cattable = t->cattable; + *partial = t->partial; + *finalline = (t->next == NULL); + ret = string_tex_input; + break; + } + case packed_lua_input: + { + unsigned strsize = t->tsize; + int newlast = lmt_fileio_state.io_first + strsize; + lmt_fileio_state.io_last = lmt_fileio_state.io_first; + if (tex_room_in_buffer(newlast)) { + for (unsigned i = 0; i < strsize; i++) { + /* when we end up here we often don't have that many bytes */ + lmt_fileio_state.io_buffer[lmt_fileio_state.io_last + i] = t->data.c[i]; + } + lmt_fileio_state.io_last = newlast; + *cattable = t->cattable; + *partial = t->partial; + *finalline = (t->next == NULL); + ret = string_tex_input; + } else { + return ret; + } + break; + } + case token_lua_input: + { + *n = t->data.h; + ret = token_tex_input; + break; + } + case token_list_lua_input: + { + *n = t->data.h; + ret = token_list_tex_input; + break; + } + case node_lua_input: + { + *n = t->data.h; + ret = node_tex_input; + break; + } + } + texlib_aux_dispose_rope(read_spindle.tail); + read_spindle.tail = t; + read_spindle.head = t->next; + } else { + texlib_aux_dispose_rope(read_spindle.tail); + read_spindle.tail = NULL; + } + return ret; +} + +/*tex Open for reading, and make a new one for writing. */ + +void lmt_cstring_start(void) +{ + lmt_spindle_state.spindle_index++; + if (lmt_spindle_state.spindle_size == lmt_spindle_state.spindle_index) { + int size = (lmt_spindle_state.spindle_size + 1) * sizeof(spindle); + spindle *spindles = lmt_memory_realloc(lmt_spindle_state.spindles, (size_t) size); + if (spindles) { + lmt_spindle_state.spindles = spindles; + texlib_aux_reset_spindle(lmt_spindle_state.spindle_index); + lmt_spindle_state.spindle_size++; + } else { + tex_overflow_error("spindle", size); + } + } +} + +/*tex Close for reading. */ + +void lmt_cstring_close(void) +{ + spindle_rope *t; + spindle_rope *next = read_spindle.head; + while (next) { + if (next->kind == string_tex_input && next->data.t) { + lmt_memory_free(next->data.t); + next->data.t = NULL; + } + t = next; + next = next->next; + if (t == read_spindle.tail) { + read_spindle.tail = NULL; + } + texlib_aux_dispose_rope(t); + } + read_spindle.head = NULL; + texlib_aux_dispose_rope(read_spindle.tail); + read_spindle.tail = NULL; + read_spindle.complete = 0; + lmt_spindle_state.spindle_index--; +} + +/*tex + The original was close to the \TEX\ original (even using |cur_val|) but there is no need to have + that all-in-one loop with radix magic. +*/ + +static const char *texlib_aux_scan_integer_part(lua_State *L, const char *ss, int *ret, int *radix_ret) +{ + int negative = 0; /*tex should the answer be negated? */ + int vacuous = 1; /*tex have no digits appeared? */ + int overflow = 0; + int c = 0; /*tex the current character */ + const char *s = ss; /*tex where we stopped in the string |ss| */ + long long result = 0; /*tex return value */ + while (1) { + c = *s++; + switch (c) { + case ' ': + case '+': + break; + case '-': + negative = ! negative; + break; + case '\'': + { + int d; + *radix_ret = 8; + c = *s++; + while (c) { + if ((c >= '0') && (c <= '0' + 7)) { + d = c - '0'; + } else { + break; + } + if (! overflow) { + vacuous = 0; + result = result * 8 + d; + if (result > max_integer) { + overflow = 1; + } + } + c = *s++; + } + goto DONE; + } + case '"': + { + int d; + *radix_ret = 16; + c = *s++; + while (c) { + if ((c >= '0') && (c <= '0' + 9)) { + d = c - '0'; + } else if ((c <= 'A' + 5) && (c >= 'A')) { + d = c - 'A' + 10; + } else if ((c <= 'a' + 5) && (c >= 'a')) { + /*tex Actually \TEX\ only handles uppercase. */ + d = c - 'a' + 10; + } else { + goto DONE; + } + if (! overflow) { + vacuous = 0; + result = result * 16 + d; + if (result > max_integer) { + overflow = 1; + } + } + c = *s++; + } + goto DONE; + } + default: + { + int d; + *radix_ret = 10; + while (c) { + if ((c >= '0') && (c <= '0' + 9)) { + d = c - '0'; + } else { + goto DONE; + } + if (! overflow) { + vacuous = 0; + result = result * 10 + d; + if (result > max_integer) { + overflow = 1; + } + } + c = *s++; + } + goto DONE; + } + } + } + DONE: + if (overflow) { + luaL_error(L, "number too big"); + result = infinity; + } else if (vacuous) { + luaL_error(L, "missing number, treated as zero") ; + } + if (negative) { + result = -result; + } + *ret = (int) result; + if (c != ' ' && s > ss) { + s--; + } + return s; +} + +/*tex + This sets |cur_val| to a dimension. We can clean this up a bit like the normal dimen scanner, + but it's seldom called. Scanning is like in \TEX, with gobbling spaces and such. When no unit + is given we assume points. When nothing is given we assume zero. Trailing crap is just ignored. +*/ + +static const char *texlib_aux_scan_dimen_part(lua_State * L, const char *ss, int *ret) +{ + int negative = 0; /*tex should the answer be negated? */ + int fraction = 0; /*tex numerator of a fraction whose denominator is $2^{16}$ */ + int numerator; + int denominator; + scaled special; /*tex an internal dimension */ + int result = 0; + int radix = 0; /*tex the current radix */ + int remainder = 0; /*tex the to be remainder */ + int saved_error = lmt_scanner_state.arithmic_error; /*tex to save |arith_error| */ + const char *s = NULL; + if (ss && (*ss == '.' || *ss == ',')) { + s = ss; + goto FRACTION; + } else { + s = texlib_aux_scan_integer_part(L, ss, &result, &radix); + } + if (! (char) *s) { + /* error, no unit, assume scaled points */ + goto ATTACH_FRACTION; + } + if (result < 0) { + negative = ! negative; + result = -result; + } + FRACTION: + if ((radix == 0 || radix == 10) && (*s == '.' || *s == ',')) { + unsigned k = 0; + unsigned char digits[18]; + s++; + while (1) { + int c = *s++; + if ((c > '0' + 9) || (c < '0')) { + break; + } else if (k < 17) { + digits[k++] = (unsigned char) c - '0'; + } + } + fraction = tex_round_decimals_digits(digits, k); + if (*s != ' ') { + --s; + } + } + /* the unit can have spaces in front */ +/*UNIT: */ + while ((char) *s == ' ') { + s++; + } + /* We dropped the |nd| and |nc| units as well as the |true| prefix. */ + if (! (char) *s) { + goto ATTACH_FRACTION; + } else if (strncmp(s, "pt", 2) == 0) { + s += 2; + goto ATTACH_FRACTION; + } else if (strncmp(s, "mm", 2) == 0) { + s += 2; + numerator = 7227; + denominator = 2540; + goto CONVERSION; + } else if (strncmp(s, "cm", 2) == 0) { + s += 2; + numerator = 7227; + denominator = 254; + goto CONVERSION; + } else if (strncmp(s, "sp", 2) == 0) { + s += 2; + goto DONE; + } else if (strncmp(s, "bp", 2) == 0) { + s += 2; + numerator = 7227; + denominator = 7200; + goto CONVERSION; + } else if (strncmp(s, "in", 2) == 0) { + s += 2; + numerator = 7227; + denominator = 100; + goto CONVERSION; + } else if (strncmp(s, "dd", 2) == 0) { + s += 2; + numerator = 1238; + denominator = 1157; + goto CONVERSION; + } else if (strncmp(s, "cc", 2) == 0) { + s += 2; + numerator = 14856; + denominator = 1157; + goto CONVERSION; + } else if (strncmp(s, "pc", 2) == 0) { + s += 2; + numerator = 12; + denominator = 1; + goto CONVERSION; + } else if (strncmp(s, "dk", 2) == 0) { + s += 2; + numerator = 49838; + denominator = 7739; + goto CONVERSION; + } else if (strncmp(s, "em", 2) == 0) { + s += 2; + special = tex_get_font_em_width(cur_font_par); + goto SPECIAL; + } else if (strncmp(s, "ex", 2) == 0) { + s += 2; + special = tex_get_font_ex_height(cur_font_par); + goto SPECIAL; + } else if (strncmp(s, "px", 2) == 0) { + s += 2; + special = px_dimen_par; + goto SPECIAL; + } else if (strncmp(s, "mu", 2) == 0) { + s += 2; + goto ATTACH_FRACTION; + /* } else if (strncmp(s, "true", 4) == 0) { */ + /* s += 4; */ + /* goto UNIT; */ + } else { + /* luaL_error(L, "illegal unit of measure (pt inserted)"); */ + goto ATTACH_FRACTION; + } + SPECIAL: + result = tex_nx_plus_y(result, special, tex_xn_over_d_r(special, fraction, 0200000, &remainder)); + goto DONE; + CONVERSION: + result = tex_xn_over_d_r(result, numerator, denominator, &remainder); + fraction = (numerator * fraction + 0200000 * remainder) / denominator; + result = result + (fraction / 0200000); + fraction = fraction % 0200000; + ATTACH_FRACTION: + if (result >= 040000) { + lmt_scanner_state.arithmic_error = 1; + } else { + result = result * 65536 + fraction; + } + DONE: + if (lmt_scanner_state.arithmic_error || (abs(result) >= 010000000000)) { + result = max_dimen; + luaL_error(L, "dimension too large"); + } + *ret = negative ? - result : result; + lmt_scanner_state.arithmic_error = saved_error; + /* only when we want to report junk */ + while ((char) *s == ' ') { + s++; + } + return s; +} + +static int texlib_aux_dimen_to_number(lua_State *L, const char *s) +{ + int result = 0; + const char *d = texlib_aux_scan_dimen_part(L, s, &result); + if (*d) { + return luaL_error(L, "conversion failed (trailing junk?)"); + } else { + return result; + } +} + +static int texlib_aux_integer_to_number(lua_State *L, const char *s) +{ + int result = 0; + int radix = 10; + const char *d = texlib_aux_scan_integer_part(L, s, &result, &radix); + if (*d) { + return luaL_error(L, "conversion failed (trailing junk?)"); + } else { + return result; + } +} + +static int texlib_toscaled(lua_State *L) +{ + int sp; + switch (lua_type(L, 1)) { + case LUA_TNUMBER: + sp = lmt_toroundnumber(L, 1); + break; + case LUA_TSTRING: + sp = texlib_aux_dimen_to_number(L, lua_tostring(L, 1)); + break; + default: + return luaL_error(L, "string or a number expected"); + } + lua_pushinteger(L, sp); + return 1; +} + +static int texlib_tonumber(lua_State *L) +{ + int i; + switch (lua_type(L, 1)) { + case LUA_TNUMBER: + i = lmt_toroundnumber(L, 1); + break; + case LUA_TSTRING: + i = texlib_aux_integer_to_number(L, lua_tostring(L, 1)); + break; + default: + return luaL_error(L, "string or a number expected"); + } + lua_pushinteger(L, i); + return 1; +} + +static int texlib_error(lua_State *L) +{ + const char *error = luaL_checkstring(L, 1); + const char *help = lua_type(L, 2) == LUA_TSTRING ? luaL_checkstring(L, 2) : NULL; + tex_handle_error(normal_error_type, error, help); + return 0; +} + +/*tex + + The lua interface needs some extra functions. The functions themselves are quite boring, but they + are handy because otherwise this internal stuff has to be accessed from \CCODE\ directly, where + lots of the defines are not available. + +*/ + +inline static int texlib_aux_valid_register_index(lua_State *L, int slot, int cmd, int base, int max) +{ + int index = -1; + switch (lua_type(L, slot)) { + case LUA_TSTRING: + { + size_t len; + const char *str = lua_tolstring(L, 1, &len); + int cs = tex_string_locate(str, len, 0); + if (eq_type(cs) == cmd) { + index = eq_value(cs) - base; + } + } + break; + case LUA_TNUMBER: + index = lmt_tointeger(L, slot); + break; + default: + luaL_error(L, "string or a number expected"); + break; + } + if (index >= 0 && index <= max) { + return index; + } else { + return -1; + } +} + +static int texlib_get_register_index(lua_State *L) +{ + size_t len; + const char *str = lua_tolstring(L, 1, &len); + int cs = tex_string_locate(str, len, 0); + int index = -1; + switch (eq_type(cs)) { + case register_toks_cmd : index = eq_value(cs) - register_toks_base; break; + case register_int_cmd : index = eq_value(cs) - register_int_base; break; + case register_attribute_cmd : index = eq_value(cs) - register_attribute_base; break; + case register_dimen_cmd : index = eq_value(cs) - register_dimen_base; break; + case register_glue_cmd : index = eq_value(cs) - register_glue_base; break; + case register_mu_glue_cmd : index = eq_value(cs) - register_mu_glue_base; break; + } + if (index >= 0) { + lua_pushinteger(L, index); + } else { + lua_pushnil(L); + } + return 1; +} + +inline static int texlib_aux_checked_register(lua_State *L, int cmd, int base, int max) +{ + int index = texlib_aux_valid_register_index(L, 1, cmd, base, max); + if (index >= 0) { + lua_pushinteger(L, index); + } else { + lua_pushboolean(L, 0); + } + return 1; +} + +typedef void (*setfunc) (int, halfword, int, int); +typedef halfword (*getfunc) (int, int); + +int lmt_check_for_flags(lua_State *L, int slot, int *flags, int prefixes, int numeric) +{ + if (global_defs_par) { + *flags = add_global_flag(*flags); + } + if (prefixes) { + while (1) { + switch (lua_type(L, slot)) { + case LUA_TSTRING: + { + const char *str = lua_tostring(L, slot); + if (! str || lua_key_eq(str, macro)) { + /*tex For practical reasons we skip empty strings. */ + slot += 1; + } else if (lua_key_eq(str, global)) { + slot += 1; + *flags = add_global_flag(*flags); + } else if (lua_key_eq(str, frozen)) { + slot += 1; + *flags = add_frozen_flag(*flags); + } else if (lua_key_eq(str, permanent)) { + slot += 1; + *flags = add_permanent_flag(*flags); + } else if (lua_key_eq(str, protected)) { + slot += 1; + *flags = add_protected_flag(*flags); + } else if (lua_key_eq(str, untraced)) { + slot += 1; + *flags = add_untraced_flag(*flags); + } else if (lua_key_eq(str, immutable)) { + slot += 1; + *flags = add_immutable_flag(*flags); + } else if (lua_key_eq(str, overloaded)) { + slot += 1; + *flags = add_overloaded_flag(*flags); + } else if (lua_key_eq(str, value)) { + slot += 1; + *flags = add_value_flag(*flags); + } else if (lua_key_eq(str, conditional) || lua_key_eq(str, condition)) { + /* condition will go, conditional stays */ + slot += 1; + *flags = add_conditional_flag(*flags); + } else { + /*tex When we have this at the start we now can have a csname. */ + return slot; + } + break; + } + case LUA_TNUMBER: + if (numeric) { + *flags |= lua_tointeger(L, slot); + slot += 1; + break; + } else { + return slot; + } + case LUA_TNIL: + /*tex This is quite convenient if we use some composer. */ + slot += 1; + break; + default: + return slot; + } + } + } + return slot; +} + +int lmt_check_for_level(lua_State *L, int slot, quarterword *level, quarterword defaultlevel) +{ + if (lua_type(L, slot) == LUA_TSTRING) { + const char *str = lua_tostring(L, slot); + *level = lua_key_eq(str, global) ? level_one : defaultlevel; + ++slot; + } else { + *level = defaultlevel; + } + return slot; +} + +/* -1=noindex, 0=register 1=internal */ + +static int texlib_aux_check_for_index( + lua_State *L, + int slot, + const char *what, + int *index, + int internal_cmd, + int register_cmd, + int internal_base, + int register_base, + int max_index +) { + *index = -1; + switch (lua_type(L, slot)) { + case LUA_TSTRING: + { + size_t len; + const char *str = lua_tolstring(L, slot, &len); + int cs = tex_string_locate(str, len, 0); + if (eq_type(cs) == internal_cmd) { + *index = eq_value(cs) - internal_base; + return 1; + } else if (eq_type(cs) == register_cmd) { + *index = eq_value(cs) - register_base; + return 0; + } else { + luaL_error(L, "incorrect %s name", what); + return -1; + } + } + case LUA_TNUMBER: + *index = lmt_tointeger(L, slot); + if (*index >= 0 && *index <= max_index) { + return 0; + } else { + return -1; + } + default: + luaL_error(L, "%s name or valid index expected", what); + return -1; + } +} + +static int texlib_get(lua_State *L); + +/*tex + + We intercept the first string and when it is |global| then we check the second one which can + also be a string. It is unlikely that one will use |\global| as register name so we don't need + to check for the number of further arguments. This permits to treat lack of them as a reset. + +*/ + +static int texlib_isdimen(lua_State *L) +{ + return texlib_aux_checked_register(L, register_dimen_cmd, register_dimen_base, max_dimen_register_index); +} + +/* [global] name|index integer|dimension|false|nil */ + +static int texlib_setdimen(lua_State *L) +{ + int flags = 0; + int index = 0; + int slot = lmt_check_for_flags(L, 1, &flags, 1, 0); + int state = texlib_aux_check_for_index(L, slot++, "dimen", &index, internal_dimen_cmd, register_dimen_cmd, internal_dimen_base, register_dimen_base, max_dimen_register_index); + if (state >= 0) { + halfword value = 0; + switch (lua_type(L, slot)) { + case LUA_TNUMBER: + value = lmt_toroundnumber(L, slot++); + break; + case LUA_TSTRING: + value = texlib_aux_dimen_to_number(L, lua_tostring(L, slot++)); + break; + case LUA_TBOOLEAN: + if (lua_toboolean(L, slot++)) { + /*tex The value |true| makes no sense. */ + return 0; + } + break; + case LUA_TNONE: + case LUA_TNIL: + break; + default: + luaL_error(L, "unsupported dimen value type"); + break; + } + tex_set_tex_dimen_register(index, value, flags, state); + if (state == 1 && lua_toboolean(L, slot)) { + tex_update_par_par(internal_dimen_cmd, index); + } + } + return 0; +} + +static int texlib_getdimen(lua_State *L) +{ + int index; + int state = texlib_aux_check_for_index(L, 1, "dimen", &index, internal_dimen_cmd, register_dimen_cmd, internal_dimen_base, register_dimen_base, max_dimen_register_index); + lua_pushinteger(L, state >= 0 ? tex_get_tex_dimen_register(index, state) : 0); + return 1; +} + +// static halfword texlib_aux_make_glue(lua_State *L, int top, int slot) +// { +// halfword value = copy_node(zero_glue); +// if (++slot <= top) { +// glue_amount(value) = lmt_toroundnumber(L, slot); +// if (++slot <= top) { +// glue_stretch(value) = lmt_toroundnumber(L, slot); +// if (++slot <= top) { +// glue_shrink(value) = lmt_toroundnumber(L, slot); +// if (++slot <= top) { +// glue_stretch_order(value) = lmt_tohalfword(L, slot); +// if (++slot <= top) { +// glue_shrink_order(value) = lmt_tohalfword(L, slot); +// } +// } +// } +// } +// } +// return value; +// } + +static halfword texlib_aux_make_glue(lua_State *L, int top, int slot) +{ + halfword value = tex_copy_node(zero_glue); + if (slot <= top) { + glue_amount(value) = lmt_toroundnumber(L, slot++); + if (slot <= top) { + glue_stretch(value) = lmt_toroundnumber(L, slot++); + if (slot <= top) { + glue_shrink(value) = lmt_toroundnumber(L, slot++); + if (slot <= top) { + glue_stretch_order(value) = lmt_tohalfword(L, slot++); + if (slot <= top) { + glue_shrink_order(value) = lmt_tohalfword(L, slot++); + } + } + } + } + } + return value; +} + +inline static int texlib_aux_push_glue(lua_State* L, halfword g) +{ + if (g) { + lua_pushinteger(L, glue_amount(g)); + lua_pushinteger(L, glue_stretch(g)); + lua_pushinteger(L, glue_shrink(g)); + lua_pushinteger(L, glue_stretch_order(g)); + lua_pushinteger(L, glue_shrink_order(g)); + } else { + lua_pushinteger(L, 0); + lua_pushinteger(L, 0); + lua_pushinteger(L, 0); + lua_pushinteger(L, 0); + lua_pushinteger(L, 0); + } + return 5; +} + +static halfword texlib_aux_get_glue_spec(lua_State *L, int slot) +{ + halfword value = null; + switch (lua_type(L, slot + 1)) { + case LUA_TBOOLEAN: + // if (lua_toboolean(L, slot + 1)) { + // /*tex The value |true| makes no sense. */ + // } + break; + case LUA_TNIL: + case LUA_TNONE: + break; + default: + value = lmt_check_isnode(L, slot + 1); + if (node_type(value) != glue_spec_node) { + value = null; + luaL_error(L, "glue_spec expected"); + } + } + return value; +} + +static int texlib_isskip(lua_State *L) +{ + return texlib_aux_checked_register(L, register_glue_cmd, register_glue_base, max_glue_register_index); +} + +/* [global] name|index gluespec|false|nil */ + +static int texlib_setskip(lua_State *L) +{ + int flags = 0; + int index = 0; + int slot = lmt_check_for_flags(L, 1, &flags, 1, 0); + int state = texlib_aux_check_for_index(L, slot++, "skip", &index, internal_glue_cmd, register_glue_cmd, internal_glue_base, register_glue_base, max_glue_register_index); + if (state >= 0) { + halfword value = texlib_aux_get_glue_spec(L, slot++); + tex_set_tex_skip_register(index, value, flags, state); + if (state == 1 && lua_toboolean(L, slot)) { + tex_update_par_par(internal_glue_cmd, index); + } + } + return 0; +} + +static int texlib_getskip(lua_State *L) +{ + int index; + int state = texlib_aux_check_for_index(L, 1, "skip", &index, internal_glue_cmd, register_glue_cmd, internal_glue_base, register_glue_base, max_glue_register_index); + halfword value = state >= 0 ? tex_get_tex_skip_register(index, state) : null; + lmt_push_node_fast(L, tex_copy_node(value ? value : zero_glue)); + return 1; +} + +static int texlib_isglue(lua_State *L) +{ + return texlib_aux_checked_register(L, register_glue_cmd, register_glue_base, max_glue_register_index); +} + +/* [global] slot [width] [stretch] [shrink] [stretch_order] [shrink_order] */ + +static int texlib_setglue(lua_State *L) +{ + int flags = 0; + int index = 0; + int slot = lmt_check_for_flags(L, 1, &flags, 1, 0); + int state = texlib_aux_check_for_index(L, slot++, "skip", &index, internal_glue_cmd, register_glue_cmd, internal_glue_base, register_glue_base, max_glue_register_index); + if (state >= 0) { + tex_set_tex_skip_register(index, texlib_aux_make_glue(L, lua_gettop(L), slot), flags, state); + } + return 0; +} + +static int texlib_getglue(lua_State *L) +{ + int index; + int all = (lua_type(L, 2) == LUA_TBOOLEAN) ? lua_toboolean(L, 2) : 1; + int state = texlib_aux_check_for_index(L, 1, "skip", &index, internal_glue_cmd, register_glue_cmd, internal_glue_base, register_glue_base, max_glue_register_index); + halfword value = state >= 0 ? tex_get_tex_skip_register(index, state) : null; + if (! value) { + lua_pushinteger(L, 0); + if (all) { + /* save the trouble of testing p/m */ + lua_pushinteger(L, 0); + lua_pushinteger(L, 0); + return 3; + } else { + return 1; + } + } else if (all) { + return texlib_aux_push_glue(L, value); + } else { + /* false */ + lua_pushinteger(L, value ? glue_amount(value) : 0); + return 1; + } +} + +static int texlib_ismuskip(lua_State *L) +{ + return texlib_aux_checked_register(L, register_mu_glue_cmd, register_mu_glue_base, max_mu_glue_register_index); +} + +static int texlib_setmuskip(lua_State *L) +{ + int flags = 0; + int index = 0; + int slot = lmt_check_for_flags(L, 1, &flags, 1, 0); + int state = texlib_aux_check_for_index(L, slot++, "muskip", &index, internal_mu_glue_cmd, register_mu_glue_cmd, internal_mu_glue_base, register_mu_glue_base, max_mu_glue_register_index); + tex_set_tex_mu_skip_register(index, texlib_aux_get_glue_spec(L, slot), flags, state); + return 0; +} + +static int texlib_getmuskip(lua_State *L) +{ + int index; + int state = texlib_aux_check_for_index(L, 1, "muskip", &index, internal_mu_glue_cmd, register_mu_glue_cmd, internal_mu_glue_base, register_mu_glue_base, max_mu_glue_register_index); + halfword value = state >= 0 ? tex_get_tex_mu_skip_register(index, state) : null; + lmt_push_node_fast(L, tex_copy_node(value ? value : zero_glue)); + return 1; +} + +static int texlib_ismuglue(lua_State *L) +{ + return texlib_aux_checked_register(L, register_mu_glue_cmd, register_mu_glue_base, max_mu_glue_register_index); +} + +static int texlib_setmuglue(lua_State *L) +{ + int flags = 0; + int index = 0; + int slot = lmt_check_for_flags(L, 1, &flags, 1, 0); + int state = texlib_aux_check_for_index(L, slot++, "muskip", &index, internal_mu_glue_cmd, register_mu_glue_cmd, internal_mu_glue_base, register_mu_glue_base, max_mu_glue_register_index); + halfword value = texlib_aux_make_glue(L, lua_gettop(L), slot); + if (state >= 0) { + tex_set_tex_mu_skip_register(index, value, flags, state); + } + return 0; +} + +static int texlib_getmuglue(lua_State *L) +{ + int index; + int all = (lua_type(L, 2) == LUA_TBOOLEAN) ? lua_toboolean(L, 2) : 1; + int state = texlib_aux_check_for_index(L, 1, "muskip", &index, internal_mu_glue_cmd, register_mu_glue_cmd, internal_mu_glue_base, register_mu_glue_base, max_mu_glue_register_index); + halfword value = state >= 0 ? tex_get_tex_mu_skip_register(index, state) : null; + if (! value) { + lua_pushinteger(L, 0); + return 1; + } else if (all) { + return texlib_aux_push_glue(L, value); + } else { + /* false */ + lua_pushinteger(L, value ? glue_amount(value) : 0); + return 1; + } +} + +static int texlib_iscount(lua_State *L) +{ + return texlib_aux_checked_register(L, register_int_cmd, register_int_base, max_int_register_index); +} + +static int texlib_setcount(lua_State *L) +{ + int flags = 0; + int index = 0; + int slot = lmt_check_for_flags(L, 1, &flags, 1, 0); + int state = texlib_aux_check_for_index(L, slot++, "count", &index, internal_int_cmd, register_int_cmd, internal_int_base, register_int_base, max_int_register_index); + if (state >= 0) { + halfword value = lmt_optinteger(L, slot++, 0); + tex_set_tex_count_register(index, value, flags, state); + if (state == 1 && lua_toboolean(L, slot)) { + tex_update_par_par(internal_int_cmd, index); + } + } + return 0; +} + +static int texlib_getcount(lua_State *L) +{ + int index; + int state = texlib_aux_check_for_index(L, 1, "count", &index, internal_int_cmd, register_int_cmd, internal_int_base, register_int_base, max_int_register_index); + lua_pushinteger(L, state >= 0 ? tex_get_tex_count_register(index, state) : 0); + return 1; +} + +static int texlib_isattribute(lua_State *L) +{ + return texlib_aux_checked_register(L, register_attribute_cmd, register_attribute_base, max_attribute_register_index); +} + +/*tex there are no system set attributes so this is a bit overkill */ + +static int texlib_setattribute(lua_State *L) +{ + int flags = 0; + int index = 0; + int slot = lmt_check_for_flags(L, 1, &flags, 1, 0); + int state = texlib_aux_check_for_index(L, slot++, "attribute", &index, internal_attribute_cmd, register_attribute_cmd, internal_attribute_base, register_attribute_base, max_attribute_register_index); + if (state >= 0) { + halfword value = lmt_optinteger(L, slot++, unused_attribute_value); + tex_set_tex_attribute_register(index, value, flags, state); + } + return 0; +} + +static int texlib_getattribute(lua_State *L) +{ + int index; + int state = texlib_aux_check_for_index(L, 1, "attribute", &index, internal_attribute_cmd, register_attribute_cmd, internal_attribute_base, register_attribute_base, max_attribute_register_index); + lua_pushinteger(L, state >= 0 ? tex_get_tex_attribute_register(index, state) : 0); + return 1; +} + +/*tex todo: we can avoid memcpy as there is no need to go through the pool */ + +/* use string_to_toks */ + +static int texlib_istoks(lua_State *L) +{ + return texlib_aux_checked_register(L, register_toks_cmd, register_toks_base, max_toks_register_index); +} + +/* [global] name|integer string|nil */ + +static int texlib_settoks(lua_State *L) +{ + int flags = 0; + int index = 0; + int slot = lmt_check_for_flags(L, 1, &flags, 1, 0); + int state = texlib_aux_check_for_index(L, slot++, "toks", &index, internal_toks_cmd, register_toks_cmd, internal_toks_base, register_toks_base,max_toks_register_index); + if (state >= 0) { + lstring value = { .c = NULL, .l = 0 }; + switch (lua_type(L, slot)) { + case LUA_TSTRING: + value.c = lua_tolstring(L, slot, &value.l); + break; + case LUA_TNIL: + case LUA_TNONE: + break; + default: + return luaL_error(L, "string or nil expected"); + } + tex_set_tex_toks_register(index, value, flags, state); + } + return 0; +} + +/* [global] name|index catcode string */ + +static int texlib_scantoks(lua_State *L) // TODO +{ + int index = 0; + int flags = 0; + int slot = lmt_check_for_flags(L, 1, &flags, 1, 0); + int state = texlib_aux_check_for_index(L, slot++, "toks", &index, internal_toks_cmd, register_toks_cmd, internal_toks_base, register_toks_base,max_toks_register_index); + if (state >= 0) { + lstring value = { .c = NULL, .l = 0 }; + int cattable = lmt_checkinteger(L, slot++); + switch (lua_type(L, slot)) { + case LUA_TSTRING: + value.c = lua_tolstring(L, slot, &value.l); + break; + case LUA_TNIL: + case LUA_TNONE: + break; + default: + return luaL_error(L, "string or nil expected"); + } + tex_scan_tex_toks_register(index, cattable, value, flags, state); + } + return 0; +} + +static int texlib_gettoks(lua_State *L) +{ + int index; + int slot = 1; + int state = texlib_aux_check_for_index(L, slot++, "toks", &index, internal_toks_cmd, register_toks_cmd, internal_toks_base, register_toks_base, max_toks_register_index); + if (state >= 0) { + if (lua_toboolean(L, slot)) { + lmt_token_register_to_lua(L, state ? toks_parameter(index) : toks_register(index)); + } else { + strnumber value = tex_get_tex_toks_register(index, state); + char *s = tex_makecstring(value); + lua_pushstring(L, s); + lmt_memory_free(s); + tex_flush_str(value); + } + } else { + lua_pushnil(L); + return 1; + } + return 1; +} + +static int texlib_getmark(lua_State *L) +{ + if (lua_gettop(L) == 0) { + lua_pushinteger(L, lmt_mark_state.mark_data.ptr); + return 1; + } else if (lua_type(L, 1) == LUA_TSTRING) { + int mrk = -1; + const char *s = lua_tostring(L, 1); + if (lua_key_eq(s, top)) { + mrk = top_marks_code; + } else if (lua_key_eq(s, first)) { + mrk = first_marks_code; + } else if (lua_key_eq(s, bottom)) { + mrk = bot_marks_code; + } else if (lua_key_eq(s, splitfirst)) { + mrk = split_first_marks_code; + } else if (lua_key_eq(s, splitbottom)) { + mrk = split_bot_marks_code; + } else if (lua_key_eq(s, current)) { + mrk = current_marks_code; + } + if (mrk >= 0) { + int num = lmt_optinteger(L, 2, 0); + if (num >= 0 && num <= lmt_mark_state.mark_data.ptr) { + halfword ptr = tex_get_some_mark(mrk, num); + if (ptr) { + char *str = tex_tokenlist_to_tstring(ptr, 1, NULL, 0, 0, 0); + if (str) { + lua_pushstring(L, str); + } else { + lua_pushliteral(L, ""); + } + return 1; + } + } else { + luaL_error(L, "valid mark class expected"); + } + } + } + lua_pushnil(L); + return 1; +} + +int lmt_get_box_id(lua_State *L, int i, int report) +{ + int index = -1; + switch (lua_type(L, i)) { + case LUA_TSTRING: + { + size_t k = 0; + const char *s = lua_tolstring(L, i, &k); + int cs = tex_string_locate(s, k, 0); + int cmd = eq_type(cs); + switch (cmd) { + case char_given_cmd: + // case math_char_given_cmd: + case integer_cmd: + index = eq_value(cs); + break; + case register_int_cmd: + index = register_int_number(eq_value(cs)); + break; + default: + /* we don't accept other commands as it makes no sense */ + break; + } + break; + } + case LUA_TNUMBER: + index = lmt_tointeger(L, i); + default: + break; + } + if (index >= 0 && index <= max_box_register_index) { + return index; + } else { + if (report) { + luaL_error(L, "string or a number within range expected"); + } + return -1; + } +} + +static int texlib_getbox(lua_State *L) +{ + halfword index = lmt_get_box_id(L, 1, 1); + lmt_node_list_to_lua(L, index >= 0 ? tex_get_tex_box_register(index, 0) : null); + return 1; +} + +static int texlib_splitbox(lua_State *L) +{ + int index = lmt_get_box_id(L, 1, 1); + if (index >= 0) { + if (lua_isnumber(L, 2)) { + int m = packing_additional; + switch (lua_type(L, 3)) { + case LUA_TSTRING: + { + const char *s = lua_tostring(L, 3); + if (lua_key_eq(s, exactly)) { + m = packing_exactly; + } else if (lua_key_eq(s, additional)) { + m = packing_additional; + } + break; + } + case LUA_TNUMBER: + { + m = lmt_tointeger(L, 3); + if (m != packing_exactly && m != packing_additional) { + m = packing_exactly; + luaL_error(L, "wrong mode in splitbox"); + } + break; + } + } + lmt_node_list_to_lua(L, tex_vsplit(index, lmt_toroundnumber(L, 2), m)); + } else { + /* maybe a warning */ + lua_pushnil(L); + } + } else { + lua_pushnil(L); + } + return 1; +} + +/* todo */ + +static int texlib_isbox(lua_State *L) +{ + lua_pushboolean(L, lmt_get_box_id(L, 1, 0) >= 0); + return 1; +} + +static int texlib_setbox(lua_State *L) +{ + int flags = 0; + int slot = lmt_check_for_flags(L, 1, &flags, 1, 0); + int index = lmt_get_box_id(L, slot++, 1); + if (index >= 0) { + int n = null; + switch (lua_type(L, slot)) { + case LUA_TBOOLEAN: + n = lua_toboolean(L, slot); + if (n) { + return 0; + } else { + n = null; + } + break; + case LUA_TNIL: + case LUA_TNONE: + break; + default: + n = lmt_node_list_from_lua(L, slot); + if (n) { + switch (node_type(n)) { + case hlist_node: + case vlist_node: + break; + default: + return luaL_error(L, "invalid node type %s passed", get_node_name(node_type(n))); + } + } + break; + } + tex_set_tex_box_register(index, n, flags, 0); + } + return 0; +} + +/* [global] index first second */ + +static int texlib_setlccode(lua_State *L) +{ + int top = lua_gettop(L); + if (top >= 2) { + quarterword level; + int slot = lmt_check_for_level(L, 1, &level, cur_level); + int ch1 = lmt_checkinteger(L, slot++); + if (character_in_range(ch1)) { + halfword ch2 = lmt_checkhalfword(L, slot++); + if (character_in_range(ch2)) { + tex_set_lc_code(ch1, ch2, level); + if (slot <= top) { + halfword ch3 = lmt_checkhalfword(L, slot); + if (character_in_range(ch3)) { + tex_set_uc_code(ch1, ch3, level); + } else { + texlib_aux_show_character_error(L, ch3); + } + } + } else { + texlib_aux_show_character_error(L, ch2); + } + } else { + texlib_aux_show_character_error(L, ch1); + } + } + return 0; +} + +static int texlib_setuccode(lua_State *L) +{ + int top = lua_gettop(L); + if (top >= 2) { + quarterword level; + int slot = lmt_check_for_level(L, 1, &level, cur_level); + int ch1 = lmt_checkinteger(L, slot++); + if (character_in_range(ch1)) { + halfword ch2 = lmt_checkhalfword(L, slot++); + if (character_in_range(ch2)) { + tex_set_uc_code(ch1, ch2, level); + if (slot <= top) { + halfword ch3 = lmt_checkhalfword(L, slot); + if (character_in_range(ch3)) { + tex_set_lc_code(ch1, ch3, level); + } else { + texlib_aux_show_character_error(L, ch3); + } + } + } else { + texlib_aux_show_character_error(L, ch2); + } + } else { + texlib_aux_show_character_error(L, ch1); + } + } + return 0; +} + +static int texlib_setsfcode(lua_State *L) +{ + int top = lua_gettop(L); + if (top >= 2) { + quarterword level; + int slot = lmt_check_for_level(L, 1, &level, cur_level); + int ch = lmt_checkinteger(L, slot++); + if (character_in_range(ch)) { + halfword val = lmt_checkhalfword(L, slot); + if (half_in_range(val)) { + tex_set_sf_code(ch, val, level); + } else { + texlib_aux_show_half_error(L, val); + } + } else { + texlib_aux_show_character_error(L, ch); + } + } + return 0; +} + +static int texlib_sethccode(lua_State *L) +{ + int top = lua_gettop(L); + if (top >= 2) { + quarterword level; + int slot = lmt_check_for_level(L, 1, &level, cur_level); + int ch = lmt_checkinteger(L, slot++); + if (character_in_range(ch)) { + halfword val = lmt_checkhalfword(L, slot); + if (half_in_range(val)) { + tex_set_hc_code(ch, val, level); + } else { + texlib_aux_show_half_error(L, val); + } + } else { + texlib_aux_show_character_error(L, ch); + } + } + return 0; +} + +static int texlib_sethmcode(lua_State *L) +{ + int top = lua_gettop(L); + if (top >= 2) { + quarterword level; + int slot = lmt_check_for_level(L, 1, &level, cur_level); + int ch = lmt_checkinteger(L, slot++); + if (character_in_range(ch)) { + halfword val = lmt_checkhalfword(L, slot); + tex_set_hm_code(ch, val, level); + } else { + texlib_aux_show_character_error(L, ch); + } + } + return 0; +} + +static int texlib_getlccode(lua_State *L) +{ + int ch = lmt_checkinteger(L, 1); + if (character_in_range(ch)) { + lua_pushinteger(L, tex_get_lc_code(ch)); + } else { + texlib_aux_show_character_error(L, ch); + lua_pushinteger(L, 0); + } + return 1; +} + +static int texlib_getuccode(lua_State *L) +{ + int ch = lmt_checkinteger(L, 1); + if (character_in_range(ch)) { + lua_pushinteger(L, tex_get_uc_code(ch)); + } else { + texlib_aux_show_character_error(L, ch); + lua_pushinteger(L, 0); + } + return 1; +} + +static int texlib_getsfcode(lua_State *L) +{ + int ch = lmt_checkinteger(L, 1); + if (character_in_range(ch)) { + lua_pushinteger(L, tex_get_sf_code(ch)); + } else { + texlib_aux_show_character_error(L, ch); + lua_pushinteger(L, 0); + } + return 1; +} + +static int texlib_gethccode(lua_State *L) +{ + int ch = lmt_checkinteger(L, 1); + if (character_in_range(ch)) { + lua_pushinteger(L, tex_get_hc_code(ch)); + } else { + texlib_aux_show_character_error(L, ch); + lua_pushinteger(L, 0); + } + return 1; +} + +static int texlib_gethmcode(lua_State *L) +{ + int ch = lmt_checkinteger(L, 1); + if (character_in_range(ch)) { + lua_pushinteger(L, tex_get_hm_code(ch)); + } else { + texlib_aux_show_character_error(L, ch); + lua_pushinteger(L, 0); + } + return 1; +} + +/* [global] [cattable] code value */ + +static int texlib_setcatcode(lua_State *L) +{ + int top = lua_gettop(L); + if (top >= 2) { + quarterword level; + int slot = lmt_check_for_level(L, 1, &level, cur_level); + int cattable = ((top - slot + 1) >= 3) ? lmt_checkinteger(L, slot++) : cat_code_table_par; + int ch = lmt_checkinteger(L, slot++); + if (character_in_range(ch)) { + halfword val = lmt_checkhalfword(L, slot); + if (catcode_in_range(val)) { + tex_set_cat_code(cattable, ch, val, level); + } else { + texlib_aux_show_catcode_error(L, val); + } + } else { + texlib_aux_show_character_error(L, ch); + } + } + return 0; +} + +/* [cattable] code */ + +static int texlib_getcatcode(lua_State *L) +{ + int slot = 1; + int cattable = (lua_gettop(L) > 1) ? lmt_checkinteger(L, slot++) : cat_code_table_par; + int ch = lmt_checkinteger(L, slot); + if (character_in_range(ch)) { + lua_pushinteger(L, tex_get_cat_code(cattable, ch)); + } else { + texlib_aux_show_character_error(L, ch); + lua_pushinteger(L, 12); /* other */ + } + return 1; +} + +/* + [global] code { c f ch } + [global] code c f ch (a bit easier on memory, counterpart of getter) +*/ + +static int texlib_setmathcode(lua_State *L) +{ + quarterword level; + int slot = lmt_check_for_level(L, 1, &level, cur_level); + int ch = lmt_checkinteger(L, slot++); + if (character_in_range(ch)) { + halfword cval, fval, chval; + switch (lua_type(L, slot)) { + case LUA_TNUMBER: + cval = lmt_checkhalfword(L, slot++); + fval = lmt_checkhalfword(L, slot++); + chval = lmt_checkhalfword(L, slot); + break; + case LUA_TTABLE: + lua_rawgeti(L, slot, 1); + cval = lmt_checkhalfword(L, -1); + lua_rawgeti(L, slot, 2); + fval = lmt_checkhalfword(L, -1); + lua_rawgeti(L, slot, 3); + chval = lmt_checkhalfword(L, -1); + lua_pop(L, 3); + break; + default: + return luaL_error(L, "number of table expected"); + } + if (class_in_range(cval)) { + if (family_in_range(fval)) { + if (character_in_range(chval)) { + mathcodeval m; + m.character_value = chval; + m.class_value = (short) cval; + m.family_value = (short) fval; + tex_set_math_code(ch, m, (quarterword) (level)); + } else { + texlib_aux_show_character_error(L, chval); + } + } else { + texlib_aux_show_family_error(L, fval); + } + } else { + texlib_aux_show_class_error(L, cval); + } + } else { + texlib_aux_show_character_error(L, ch); + } +return 0; +} + +static int texlib_getmathcode(lua_State* L) +{ + mathcodeval mval = { 0, 0, 0 }; + int ch = lmt_checkinteger(L, -1); + if (character_in_range(ch)) { + mval = tex_get_math_code(ch); + } else { + texlib_aux_show_character_error(L, ch); + } + lua_createtable(L, 3, 0); + lua_pushinteger(L, mval.class_value); + lua_rawseti(L, -2, 1); + lua_pushinteger(L, mval.family_value); + lua_rawseti(L, -2, 2); + lua_pushinteger(L, mval.character_value); + lua_rawseti(L, -2, 3); + return 1; +} + +static int texlib_getmathcodes(lua_State* L) +{ + mathcodeval mval = { 0, 0, 0 }; + int ch = lmt_checkinteger(L, -1); + if (character_in_range(ch)) { + mval = tex_get_math_code(ch); + } else { + texlib_aux_show_character_error(L, ch); + } + lua_pushinteger(L, mval.class_value); + lua_pushinteger(L, mval.family_value); + lua_pushinteger(L, mval.character_value); + return 3; +} + +/* + [global] code { c f ch } + [global] code c f ch (a bit easier on memory, counterpart of getter) +*/ + +static int texlib_setdelcode(lua_State* L) +{ + quarterword level; + int slot = lmt_check_for_level(L, 1, &level, cur_level); + /* todo: when no integer than do a reset */ + int ch = lmt_checkinteger(L, slot++); + if (character_in_range(ch)) { + halfword sfval, scval, lfval, lcval; + switch (lua_type(L, slot)) { + case LUA_TNUMBER: + sfval = lmt_checkhalfword(L, slot++); + scval = lmt_checkhalfword(L, slot++); + lfval = lmt_checkhalfword(L, slot++); + lcval = lmt_checkhalfword(L, slot); + break; + case LUA_TTABLE: + lua_rawgeti(L, slot, 1); + sfval = lmt_checkhalfword(L, -1); + lua_rawgeti(L, slot, 2); + scval = lmt_checkhalfword(L, -1); + lua_rawgeti(L, slot, 3); + lfval = lmt_checkhalfword(L, -1); + lua_rawgeti(L, slot, 4); + lcval = lmt_checkhalfword(L, -1); + lua_pop(L, 4); + break; + default: + return luaL_error(L, "number of table expected"); + } + if (family_in_range(sfval)) { + if (character_in_range(scval)) { + if (family_in_range(lfval)) { + if (character_in_range(lcval)) { + delcodeval d; + d.small.class_value = 0; + d.small.family_value = (short) sfval; + d.small.character_value = scval; + d.large.class_value = 0; + d.large.family_value = (short) lfval; + d.large.character_value = lcval; + tex_set_del_code(ch, d, (quarterword) (level)); + } + else { + texlib_aux_show_character_error(L, lcval); + } + } + else { + texlib_aux_show_family_error(L, lfval); + } + } + else { + texlib_aux_show_character_error(L, scval); + } + } + else { + texlib_aux_show_family_error(L, sfval); + } + } + else { + texlib_aux_show_character_error(L, ch); + } + return 0; +} + +static int texlib_getdelcode(lua_State* L) +{ + delcodeval dval = tex_no_del_code(); + int ch = lmt_checkinteger(L, -1); + if (character_in_range(ch)) { + dval = tex_get_del_code(ch); + } else { + texlib_aux_show_character_error(L, ch); + } + if (tex_has_del_code(dval)) { + lua_createtable(L, 4, 0); + lua_pushinteger(L, dval.small.family_value); + lua_rawseti(L, -2, 1); + lua_pushinteger(L, dval.small.character_value); + lua_rawseti(L, -2, 2); + lua_pushinteger(L, dval.large.family_value); + lua_rawseti(L, -2, 3); + lua_pushinteger(L, dval.large.character_value); + lua_rawseti(L, -2, 4); + } else { + lua_pushnil(L); + } + return 1; +} + +static int texlib_getdelcodes(lua_State* L) +{ + delcodeval dval = tex_no_del_code(); + int ch = lmt_checkinteger(L, -1); + if (character_in_range(ch)) { + dval = tex_get_del_code(ch); + } else { + texlib_aux_show_character_error(L, ch); + } + if (tex_has_del_code(dval)) { + lua_pushinteger(L, dval.small.family_value); + lua_pushinteger(L, dval.small.character_value); + lua_pushinteger(L, dval.large.family_value); + lua_pushinteger(L, dval.large.character_value); + } else { + lua_pushnil(L); + } + return 4; +} + +static halfword texlib_aux_getdimension(lua_State* L, int index) +{ + switch (lua_type(L, index)) { + case LUA_TNUMBER: + return lmt_toroundnumber(L, index); + case LUA_TSTRING: + return texlib_aux_dimen_to_number(L, lua_tostring(L, index)); + default: + luaL_error(L, "string or number expected (dimension)"); + return 0; + } +} + +static halfword texlib_aux_getinteger(lua_State* L, int index) +{ + switch (lua_type(L, index)) { + case LUA_TNUMBER: + return lmt_toroundnumber(L, index); + default: + luaL_error(L, "number expected (integer)"); + return 0; + } +} + +static halfword texlib_toparshape(lua_State *L, int i) +{ + if (lua_type(L, i) == LUA_TTABLE) { + halfword n = (halfword) luaL_len(L, i); + if (n > 0) { + halfword p = tex_new_specification_node(n, par_shape_code, 0); /* todo: repeat but then not top based */ + lua_push_key(repeat); + if (lua_rawget(L, -2) == LUA_TBOOLEAN && lua_toboolean(L, -1)) { + tex_set_specification_option(p, specification_option_repeat); + } + lua_pop(L, 1); + /* fill |p| */ + for (int j = 1; j <= n; j++) { + halfword indent = 0; + halfword width = 0; + if (lua_rawgeti(L, i, j) == LUA_TTABLE) { + if (lua_rawgeti(L, -1, 1) == LUA_TNUMBER) { + indent = lmt_toroundnumber(L, -1); + if (lua_rawgeti(L, -2, 2) == LUA_TNUMBER) { + width = lmt_toroundnumber(L, -1); + } + lua_pop(L, 1); + } + lua_pop(L, 1); + } + lua_pop(L, 1); + tex_set_specification_indent(p, j, indent); + tex_set_specification_width(p, j, width); + } + return p; + } + } + return null; +} + +static int texlib_shiftparshape(lua_State *L) +{ + if (par_shape_par) { + tex_shift_specification_list(par_shape_par, lmt_tointeger(L, 1), lua_toboolean(L, 2)); + } + return 0; +} + +static int texlib_snapshotpar(lua_State *L) +{ + halfword par = tex_find_par_par(cur_list.head); + if (par) { + if (lua_type(L, 1) == LUA_TNUMBER) { + tex_snapshot_par(par, lmt_tointeger(L, 1)); + } + lua_pushinteger(L, par_state(par)); + return 1; + } else { + return 0; + } +} + +static int texlib_getparstate(lua_State *L) +{ + lua_createtable(L, 0, 7); + lua_push_integer_at_key(L, hsize, hsize_par); + lua_push_integer_at_key(L, leftskip, left_skip_par ? glue_amount(left_skip_par) : 0); + lua_push_integer_at_key(L, rightskip, right_skip_par ? glue_amount(right_skip_par) : 0); + lua_push_integer_at_key(L, hangindent, hang_indent_par); + lua_push_integer_at_key(L, hangafter, hang_after_par); + lua_push_integer_at_key(L, parindent, par_indent_par); + lua_push_specification_at_key(L, parshape, par_shape_par); + return 1; +} + +static int texlib_set_item(lua_State* L, int index, int prefixes) +{ + int flags = 0; + int slot = lmt_check_for_flags(L, index, &flags, prefixes, 0); + size_t sl; + const char *st = lua_tolstring(L, slot++, &sl); + if (sl > 0) { + int cs = tex_string_locate(st, sl, 0); + if (cs != undefined_control_sequence && has_eq_flag_bits(cs, primitive_flag_bit)) { + int cmd = eq_type(cs); + switch (cmd) { + case internal_int_cmd: + case register_int_cmd: /* ? */ + switch (lua_type(L, slot)) { + case LUA_TNUMBER: + { + int n = lmt_tointeger(L, slot++); + if (cmd == register_int_cmd) { + tex_word_define(flags, eq_value(cs), n); + } else { + tex_assign_internal_int_value(lua_toboolean(L, slot) ? add_frozen_flag(flags) : flags, eq_value(cs), n); + } + break; + } + default: + luaL_error(L, "number expected"); + break; + } + return 1; + case internal_dimen_cmd: + case register_dimen_cmd: + { + halfword n = texlib_aux_getdimension(L, slot); + if (cmd == register_dimen_cmd) { + tex_word_define(flags, eq_value(cs), n); + } else { + tex_assign_internal_dimen_value(lua_toboolean(L, slot) ? add_frozen_flag(flags) : flags, eq_value(cs), n); + } + return 1; + } + case internal_glue_cmd: + case register_glue_cmd: + switch (lua_type(L, slot)) { + case LUA_TNUMBER: + { + int top = lua_gettop(L); + halfword value = tex_copy_node(zero_glue); + glue_amount(value) = lmt_toroundnumber(L, slot++); + if (slot <= top) { + glue_stretch(value) = lmt_toroundnumber(L, slot++); + if (slot <= top) { + glue_shrink(value) = lmt_toroundnumber(L, slot++); + if (slot <= top) { + glue_stretch_order(value) = lmt_tohalfword(L, slot++); + if (slot <= top) { + glue_shrink_order(value) = lmt_tohalfword(L, slot); + } + } + } + } + if (cmd == register_glue_cmd) { + tex_word_define(flags, eq_value(cs), value); + } else { + tex_assign_internal_skip_value(lua_toboolean(L, slot) ? add_frozen_flag(flags) : flags, eq_value(cs), value); + } + break; + } + case LUA_TUSERDATA: + { + halfword n = lmt_check_isnode(L, slot); + if (node_type(n) == glue_spec_node) { + if (cmd == register_glue_cmd) { + tex_word_define(flags, eq_value(cs), n); + } else { + tex_assign_internal_skip_value(lua_toboolean(L, slot) ? add_frozen_flag(flags) : flags, eq_value(cs), n); + } + } else { + luaL_error(L, "gluespec node expected"); + } + break; + } + default: + luaL_error(L, "number or node expected"); + break; + } + return 1; + case internal_toks_cmd: + case register_toks_cmd: + switch (lua_type(L, slot)) { + case LUA_TSTRING: + { + int t = lmt_token_list_from_lua(L, slot); + // define(flags, eq_value(cs), call_cmd, t); /* was call_cmd */ + tex_define(flags, eq_value(cs), cmd == internal_toks_cmd ? internal_toks_reference_cmd : register_toks_reference_cmd, t); /* eq_value(cs) and not cs ? */ + break; + } + default: + luaL_error(L, "string expected"); + break; + } + return 1; + case set_page_property_cmd: + /*tex This could be |set_page_property_value| instead. */ + switch (eq_value(cs)) { + // case page_goal_code: + // case page_total_code: + // case page_vsize_code: + case page_depth_code: + lmt_page_builder_state.depth = texlib_aux_getdimension(L, slot); + break; + // case page_stretch_code: + // case page_filstretch_code: + // case page_fillstretch_code: + // case page_filllstretch_code: + // case page_shrink_code: + case insert_storing_code: + lmt_insert_state.storing = texlib_aux_getinteger(L, slot); + break; + // case dead_cycles_code: + // case insert_penalties_code: + // case interaction_mode_code: + default: + return 0; + } + case set_auxiliary_cmd: + /*tex This could be |set_aux_value| instead. */ + switch (eq_value(cs)) { + case space_factor_code: + cur_list.space_factor = texlib_aux_getinteger(L, slot); + return 1; + case prev_depth_code: + cur_list.prev_depth = texlib_aux_getdimension(L, slot); + return 1; + case prev_graf_code: + cur_list.prev_graf = texlib_aux_getinteger(L, slot); + return 1; + default: + return 0; + } + case set_box_property_cmd: + /*tex This could be |set_box_property_value| instead. */ + return 0; + case set_specification_cmd: + { + int chr = internal_specification_number(eq_value(cs)); + switch (chr) { + case par_shape_code: + { + halfword p = texlib_toparshape(L, slot); + tex_define(flags, eq_value(cs), specification_reference_cmd, p); + // lua_toboolean(L, slot + 1) ? add_frozen_flag(flags) : flags + if (is_frozen(flags) && cur_mode == hmode) { + tex_update_par_par(specification_reference_cmd, chr); + } + break; + } + } + return 0; + } + } + } + } + return 0; +} + +static int texlib_set(lua_State *L) +{ + texlib_set_item(L, 1, 1); + return 0; +} + +static int texlib_newindex(lua_State *L) +{ + if (! texlib_set_item(L, 2, 0)) { + lua_rawset(L, 1); + } + return 0; +} + +static int texlib_aux_convert(lua_State *L, int cur_code) +{ + int i = -1; + char *str = NULL; + switch (cur_code) { + /* ignored (yet) */ + case insert_progress_code: /* arg <register int> */ + case lua_code: /* arg complex */ + case lua_escape_string_code: /* arg token list */ + case string_code: /* arg token */ + case cs_string_code: /* arg token */ + case detokenized_code: /* arg token */ + case meaning_code: /* arg token */ + case to_mathstyle_code: + break; + /* the next fall through, and come from 'official' indices! */ + case font_name_code: /* arg fontid */ + case font_specification_code: /* arg fontid */ + case font_identifier_code: /* arg fontid */ + case number_code: /* arg int */ + case to_integer_code: /* arg int */ + case to_hexadecimal_code: /* arg int */ + case to_scaled_code: /* arg int */ + case to_sparse_scaled_code: /* arg int */ + case to_dimension_code: /* arg int */ + case to_sparse_dimension_code: /* arg int */ + case roman_numeral_code: /* arg int */ + if (lua_gettop(L) < 1) { + /* error */ + } + i = lmt_tointeger(L, 1); + // fall through + default: + /* no backend here */ + if (cur_code < 32) { + int texstr = tex_the_convert_string(cur_code, i); + if (texstr) { + str = tex_makecstring(texstr); + tex_flush_str(texstr); + } + } + break; + } + /* end */ + if (str) { + lua_pushstring(L, str); + lmt_memory_free(str); + } else { + lua_pushnil(L); + } + return 1; +} + +static int texlib_aux_scan_internal(lua_State *L, int cmd, int code, int values) +{ + int retval = 1 ; + int save_cur_val = cur_val; + int save_cur_val_level = cur_val_level; + tex_scan_something_simple(cmd, code); + switch (cur_val_level) { + case int_val_level: + case dimen_val_level: + case attr_val_level: + lua_pushinteger(L, cur_val); + break; + case glue_val_level: + case mu_val_level: + switch (values) { + case 0: + lua_pushinteger(L, glue_amount(cur_val)); + tex_flush_node(cur_val); + break; + case 1: + lua_pushinteger(L, glue_amount(cur_val)); + lua_pushinteger(L, glue_stretch(cur_val)); + lua_pushinteger(L, glue_shrink(cur_val)); + lua_pushinteger(L, glue_stretch_order(cur_val)); + lua_pushinteger(L, glue_shrink_order(cur_val)); + tex_flush_node(cur_val); + retval = 5; + break; + default: + lmt_push_node_fast(L, cur_val); + break; + } + break; + case list_val_level: + lmt_push_node_fast(L, cur_val); + break; + default: + { + int texstr = tex_the_scanned_result(); + char *str = tex_makecstring(texstr); + if (str) { + lua_pushstring(L, str); + lmt_memory_free(str); + } else { + lua_pushnil(L); + } + tex_flush_str(texstr); + } + break; + } + cur_val = save_cur_val; + cur_val_level = save_cur_val_level; + return retval; +} + +/*tex + Todo: complete this one. +*/ + +static int texlib_aux_someitem(lua_State *L, int code) +{ + switch (code) { + /* the next two do not actually exist */ + /* case attrexpr_code: */ + /* break; */ + /* the expressions do something complicated with arguments, yuck */ + case numexpr_code: + case dimexpr_code: + case glueexpr_code: + case muexpr_code: + case numexpression_code: + case dimexpression_code: + break; + // case dimen_to_scale_code: + case numeric_scale_code: + break; + case index_of_register_code: + case index_of_character_code: + break; + case last_chk_num_code: + case last_chk_dim_code: + break; + /* these read a glue or muglue, todo */ + case mu_to_glue_code: + case glue_to_mu_code: + case glue_stretch_order_code: + case glue_shrink_order_code: + case glue_stretch_code: + case glue_shrink_code: + break; + /* these read a fontid and a char, todo */ + case font_id_code: + case glyph_x_scaled_code: + case glyph_y_scaled_code: + /* these read a font, todo */ + case font_spec_id_code: + case font_spec_scale_code: + case font_spec_xscale_code: + case font_spec_yscale_code: + /* these need a spec, todo */ + break; + case font_char_wd_code: + case font_char_ht_code: + case font_char_dp_code: + case font_char_ic_code: + case font_char_ta_code: + /* these read a char, todo */ + break; + case font_size_code: + lua_pushinteger(L, font_size(cur_font_par)); + break; + case font_math_control_code: + lua_pushinteger(L, font_mathcontrol(cur_font_par)); + break; + case font_text_control_code: + lua_pushinteger(L, font_textcontrol(cur_font_par)); + break; + case math_scale_code: + break; + case math_style_code: + { + int style = tex_current_math_style(); + if (style >= 0) { + lua_pushinteger(L, style); + return 1; + } else { + break; + } + } + /* these read a char, todo */ + case math_main_style_code: + { + int style = tex_current_math_main_style(); + if (style >= 0) { + lua_pushinteger(L, style); + return 1; + } else { + break; + } + } + /* these read a char, todo */ + case math_char_class_code: + case math_char_fam_code: + case math_char_slot_code: + break; + case last_arguments_code: + lua_pushinteger(L, lmt_expand_state.arguments); + return 1; + case parameter_count_code: + lua_pushinteger(L, tex_get_parameter_count()); + return 1; + /* case lua_value_function_code: */ + /* break; */ + case insert_progress_code: + break; + /* these read an integer, todo */ + case left_margin_kern_code: + case right_margin_kern_code: + break; + case par_shape_length_code: + case par_shape_indent_code: + case par_shape_dimen_code: + break; + case lastpenalty_code: + case lastkern_code: + case lastskip_code: + case lastboundary_code: + case last_node_type_code: + case last_node_subtype_code: + case input_line_no_code: + case badness_code: + case overshoot_code: + case luatex_version_code: + case luatex_revision_code: + case current_group_level_code: + case current_group_type_code: + case current_if_level_code: + case current_if_type_code: + case current_if_branch_code: + return texlib_aux_scan_internal(L, some_item_cmd, code, -1); + case last_left_class_code: + lua_pushinteger(L, lmt_math_state.last_left); + return 1; + case last_right_class_code: + lua_pushinteger(L, lmt_math_state.last_right); + return 1; + case last_atom_class_code: + lua_pushinteger(L, lmt_math_state.last_atom); + return 1; + case current_loop_iterator_code: + case last_loop_iterator_code: + lua_pushinteger(L, lmt_main_control_state.loop_iterator); + return 1; + case current_loop_nesting_code: + lua_pushinteger(L, lmt_main_control_state.loop_nesting); + return 1; + case last_par_context_code: + lua_pushinteger(L, lmt_main_control_state.last_par_context); + return 1; + case last_page_extra_code: + lua_pushinteger(L, lmt_page_builder_state.last_extra_used); + return 1; + } + lua_pushnil(L); + return 1; +} + +static int texlib_setmath(lua_State *L) +{ + int top = lua_gettop(L); + if (top >= 3) { + quarterword level; + int slot = lmt_check_for_level(L, 1, &level, cur_level); + int param = lmt_get_math_parameter(L, slot++, -1); + int style = lmt_get_math_style(L, slot++, -1); + if (param < 0 || style < 0) { + /* invalid spec, just ignore it */ + } else { + switch (math_parameter_value_type(param)) { + case math_int_parameter: + case math_dimen_parameter: + case math_style_parameter: + tex_def_math_parameter(style, param, (scaled) lmt_optroundnumber(L, slot, 0), level, indirect_math_regular); + break; + case math_muglue_parameter: + { + halfword p = tex_copy_node(zero_glue); + glue_amount(p) = lmt_optroundnumber(L, slot++, 0); + glue_stretch(p) = lmt_optroundnumber(L, slot++, 0); + glue_shrink(p) = lmt_optroundnumber(L, slot++, 0); + glue_stretch_order(p) = lmt_optroundnumber(L, slot++, 0); + glue_shrink_order(p) = lmt_optroundnumber(L, slot, 0); + tex_def_math_parameter(style, param, (scaled) p, level, indirect_math_regular); + break; + } + } + } + } + return 0; +} + +static int texlib_getmath(lua_State *L) +{ + if (lua_gettop(L) == 2) { + int param = lmt_get_math_parameter(L, 1, -1); + int style = lmt_get_math_style(L, 2, -1); + if (param >= 0 && style >= 0) { + scaled value = tex_get_math_parameter(style, param, NULL); + if (value != undefined_math_parameter) { + switch (math_parameter_value_type(param)) { + case math_int_parameter: + case math_dimen_parameter: + case math_style_parameter: + lua_pushinteger(L, value); + return 1; + case math_muglue_parameter: + if (value <= thick_mu_skip_code) { + value = glue_parameter(value); + } + lua_pushinteger(L, glue_amount(value)); + lua_pushinteger(L, glue_stretch(value)); + lua_pushinteger(L, glue_shrink(value)); + lua_pushinteger(L, glue_stretch_order(value)); + lua_pushinteger(L, glue_shrink_order(value)); + return 5; + } + } + } + } + lua_pushnil(L); + return 1; +} + +/*tex + + This one is purely for diagnostic pusposed as normally there is some scaling + involved related to the current style and such. + +*/ + +static int texlib_getfontname(lua_State *L) +{ + return texlib_aux_convert(L, font_name_code); +} + +static int texlib_getfontidentifier(lua_State *L) +{ + return texlib_aux_convert(L, font_identifier_code); +} + +static int texlib_getfontoffamily(lua_State *L) +{ + int f = lmt_checkinteger(L, 1); + int s = lmt_optinteger(L, 2, 0); /* this should be a multiple of 256 ! */ + lua_pushinteger(L, tex_fam_fnt(f, s)); + return 1; +} + +static int texlib_getnumber(lua_State *L) +{ + return texlib_aux_convert(L, number_code); /* check */ +} + +// static int texlib_getdimension(lua_State *L) +// { +// return texlib_aux_convert(L, to_dimension_code); /* check */ +// } + +static int texlib_getromannumeral(lua_State *L) +{ + return texlib_aux_convert(L, roman_numeral_code); +} + +static int texlib_get_internal(lua_State *L, int index, int all) +{ + if (lua_type(L, index) == LUA_TSTRING) { + size_t l; + const char *s = lua_tolstring(L, index, &l); + if (l == 0) { + return 0; + } else if (lua_key_eq(s, prevdepth)) { + lua_pushinteger(L, cur_list.prev_depth); + return 1; + } else if (lua_key_eq(s, prevgraf)) { + lua_pushinteger(L, cur_list.prev_graf); + return 1; + } else if (lua_key_eq(s, spacefactor)) { + lua_pushinteger(L, cur_list.space_factor); + return 1; + } else { + /*tex + We no longer get the info from the primitives hash but use the current + primitive meaning. + */ /* + int ts = maketexlstring(s, l); + int cs = prim_lookup(ts); + flush_str(ts); + if (cs > 0) { + int cs = string_locate(s, l, 0); + if (cs != undefined_control_sequence && has_eq_flag_bits(cs, primitive_flag_bit)) { + int cmd = get_prim_eq_type(cs); + int code = get_prim_equiv(cs); + */ + int cs = tex_string_locate(s, l, 0); + if (cs != undefined_control_sequence && has_eq_flag_bits(cs, primitive_flag_bit)) { + int cmd = eq_type(cs); + int code = eq_value(cs); + switch (cmd) { + case some_item_cmd: + return texlib_aux_someitem(L, code); + case convert_cmd: + return texlib_aux_convert(L, code); + case internal_toks_cmd: + case register_toks_cmd: + case internal_int_cmd: + case register_int_cmd: + case internal_attribute_cmd: + case register_attribute_cmd: + case internal_dimen_cmd: + case register_dimen_cmd: + case lua_value_cmd: + case iterator_value_cmd: + case set_auxiliary_cmd: + case set_page_property_cmd: + case char_given_cmd: + // case math_char_given_cmd: + case integer_cmd: + case dimension_cmd: + case gluespec_cmd: + case mugluespec_cmd: + case mathspec_cmd: + case fontspec_cmd: + return texlib_aux_scan_internal(L, cmd, code, -1); + case internal_glue_cmd: + case register_glue_cmd: + case internal_mu_glue_cmd: + case register_mu_glue_cmd: + return texlib_aux_scan_internal(L, cmd, code, all); + case set_specification_cmd: + return lmt_push_specification(L, specification_parameter(internal_specification_number(code)), all); /* all == countonly */ + default: + /* tex_formatted_warning("tex.get", "ignoring cmd %i: %s\n", cmd, s); */ + break; + } + } + } + } + return 0; +} + +static int texlib_get(lua_State *L) +{ + /* stack: key [boolean] */ + int ret = texlib_get_internal(L, 1, (lua_type(L, 2) == LUA_TBOOLEAN) ? lua_toboolean(L, 2) : -1); + if (ret) { + return ret; + } else { + lua_pushnil(L); + return 1; + } +} + +static int texlib_index(lua_State *L) +{ + /* stack: table key */ + int ret = texlib_get_internal(L, 2, -1); + if (ret) { + return ret; + } else { + lua_rawget(L, 1); + return 1; + } +} + +static int texlib_getlist(lua_State *L) +{ + const char *s = lua_tostring(L, 1); + if (! s) { + lua_pushnil(L); + } else if (lua_key_eq(s, pageinserthead)) { + lmt_push_node_fast(L, tex_get_special_node_list(page_insert_list_type, NULL)); + } else if (lua_key_eq(s, contributehead)) { + lmt_push_node_fast(L, tex_get_special_node_list(contribute_list_type, NULL)); + } else if (lua_key_eq(s, pagehead)) { + lmt_push_node_fast(L, tex_get_special_node_list(page_list_type, NULL)); + } else if (lua_key_eq(s, temphead)) { + lmt_push_node_fast(L, tex_get_special_node_list(temp_list_type, NULL)); + } else if (lua_key_eq(s, holdhead)) { + lmt_push_node_fast(L, tex_get_special_node_list(hold_list_type, NULL)); + } else if (lua_key_eq(s, postadjusthead)) { + lmt_push_node_fast(L, tex_get_special_node_list(post_adjust_list_type, NULL)); + } else if (lua_key_eq(s, preadjusthead)) { + lmt_push_node_fast(L, tex_get_special_node_list(pre_adjust_list_type, NULL)); + } else if (lua_key_eq(s, postmigratehead)) { + lmt_push_node_fast(L, tex_get_special_node_list(post_migrate_list_type, NULL)); + } else if (lua_key_eq(s, premigratehead)) { + lmt_push_node_fast(L, tex_get_special_node_list(pre_migrate_list_type, NULL)); + } else if (lua_key_eq(s, alignhead)) { + lmt_push_node_fast(L, tex_get_special_node_list(align_list_type, NULL)); + } else if (lua_key_eq(s, pagediscardshead)) { + lmt_push_node_fast(L, tex_get_special_node_list(page_discards_list_type, NULL)); + } else if (lua_key_eq(s, splitdiscardshead)) { + lmt_push_node_fast(L, tex_get_special_node_list(split_discards_list_type, NULL)); + } else if (lua_key_eq(s, bestpagebreak)) { + lmt_push_node_fast(L, lmt_page_builder_state.best_break); + } else if (lua_key_eq(s, leastpagecost)) { + lua_pushinteger(L, lmt_page_builder_state.least_cost); + } else if (lua_key_eq(s, bestsize)) { + lua_pushinteger(L, lmt_page_builder_state.best_size); /* is pagegoal but can be unset and also persistent */ + } else if (lua_key_eq(s, insertpenalties)) { + lua_pushinteger(L, lmt_page_builder_state.insert_penalties); + } else if (lua_key_eq(s, insertheights)) { + lua_pushinteger(L, lmt_page_builder_state.insert_heights); + } else { + lua_pushnil(L); + } + return 1; +} + +/* todo: accept direct node too */ + +static int texlib_setlist(lua_State *L) +{ + const char *s = lua_tostring(L, 1); + if (! s) { + /* This is silently ignored */ + } else if (lua_key_eq(s, bestsize)) { + lmt_page_builder_state.best_size = lmt_toscaled(L, 2); /* is pagegoal but can be unset and also persistent */ + } else if (lua_key_eq(s, leastpagecost)) { + lmt_page_builder_state.least_cost = lmt_tointeger(L, 2); + } else if (lua_key_eq(s, insertpenalties)) { + lmt_page_builder_state.insert_penalties = lmt_tointeger(L, 2); + } else if (lua_key_eq(s, insertheights)) { + lmt_page_builder_state.insert_heights = lmt_tointeger(L, 2); + } else { + halfword n = null; + if (! lua_isnil(L, 2)) { + n = lmt_check_isnode(L, 2); + } + if (lua_key_eq(s, pageinserthead)) { + tex_set_special_node_list(page_insert_list_type, n); + } else if (lua_key_eq(s, contributehead)) { + tex_set_special_node_list(contribute_list_type, n); + } else if (lua_key_eq(s, pagehead)) { + tex_set_special_node_list(page_list_type, n); + } else if (lua_key_eq(s, temphead)) { + tex_set_special_node_list(temp_list_type, n); + } else if (lua_key_eq(s, pagediscardshead)) { + tex_set_special_node_list(page_discards_list_type, n); + } else if (lua_key_eq(s, splitdiscardshead)) { + tex_set_special_node_list(split_discards_list_type, n); + } else if (lua_key_eq(s, holdhead)) { + tex_set_special_node_list(hold_list_type, n); + } else if (lua_key_eq(s, postadjusthead)) { + tex_set_special_node_list(post_adjust_list_type, n); + } else if (lua_key_eq(s, preadjusthead)) { + tex_set_special_node_list(pre_adjust_list_type, n); + } else if (lua_key_eq(s, postmigratehead)) { + tex_set_special_node_list(post_migrate_list_type, n); + } else if (lua_key_eq(s, premigratehead)) { + tex_set_special_node_list(pre_migrate_list_type, n); + } else if (lua_key_eq(s, alignhead)) { + tex_set_special_node_list(align_list_type, n); + } else if (lua_key_eq(s, bestpagebreak)) { + lmt_page_builder_state.best_break = n; + } + } + return 0; +} + +static void texlib_get_nest_field(lua_State *L, const char *field, list_state_record *r) +{ + + if (lua_key_eq(field, mode)) { + lua_pushinteger(L, r->mode); + } else if (lua_key_eq(field, head) || lua_key_eq(field, list)) { + /* we no longer check for special list nodes here so beware of prev-of-head */ + lmt_push_node_fast(L, r->head); + } else if (lua_key_eq(field, tail)) { + /* we no longer check for special list nodes here so beware of next-of-tail */ + lmt_push_node_fast(L, r->tail); + } else if (lua_key_eq(field, delimiter)) { + lmt_push_node_fast(L, r->delim); + } else if (lua_key_eq(field, prevgraf)) { + lua_pushinteger(L, r->prev_graf); + } else if (lua_key_eq(field, modeline)) { + lua_pushinteger(L, r->mode_line); + } else if (lua_key_eq(field, prevdepth)) { + lua_pushinteger(L, r->prev_depth); + } else if (lua_key_eq(field, spacefactor)) { + lua_pushinteger(L, r->space_factor); + } else if (lua_key_eq(field, noad)) { + lmt_push_node_fast(L, r->incomplete_noad); + } else if (lua_key_eq(field, direction)) { + lmt_push_node_fast(L, r->direction_stack); + } else if (lua_key_eq(field, mathdir)) { + lua_pushboolean(L, r->math_dir); + } else if (lua_key_eq(field, mathstyle)) { + lua_pushinteger(L, r->math_style); + } else { + lua_pushnil(L); + } +} + +static void texlib_set_nest_field(lua_State *L, int n, const char *field, list_state_record *r) +{ + if (lua_key_eq(field, mode)) { + r->mode = lmt_tointeger(L, n); + } else if (lua_key_eq(field, head) || lua_key_eq(field, list)) { + r->head = lmt_check_isnode(L, n); + } else if (lua_key_eq(field, tail)) { + r->tail = lmt_check_isnode(L, n); + } else if (lua_key_eq(field, delimiter)) { + r->delim = lmt_check_isnode(L, n); + } else if (lua_key_eq(field, prevgraf)) { + r->prev_graf = lmt_tointeger(L, n); + } else if (lua_key_eq(field, modeline)) { + r->mode_line = lmt_tointeger(L, n); + } else if (lua_key_eq(field, prevdepth)) { + r->prev_depth = lmt_toroundnumber(L, n); + } else if (lua_key_eq(field, spacefactor)) { + r->space_factor = lmt_toroundnumber(L, n); + } else if (lua_key_eq(field, noad)) { + r->incomplete_noad = lmt_check_isnode(L, n); + } else if (lua_key_eq(field, direction)) { + r->direction_stack = lmt_check_isnode(L, n); + } else if (lua_key_eq(field, mathdir)) { + r->math_dir = lua_toboolean(L, n); + } else if (lua_key_eq(field, mathstyle)) { + r->math_style = lmt_tointeger(L, n); + } +} + +static int texlib_aux_nest_getfield(lua_State *L) +{ + list_state_record **rv = lua_touserdata(L, -2); + list_state_record *r = *rv; + const char *field = lua_tostring(L, -1); + texlib_get_nest_field(L, field, r); + return 1; +} + +static int texlib_aux_nest_setfield(lua_State *L) +{ + list_state_record **rv = lua_touserdata(L, -3); + list_state_record *r = *rv; + const char *field = lua_tostring(L, -2); + texlib_set_nest_field(L, -1, field, r); + return 0; +} + +static const struct luaL_Reg texlib_nest_metatable[] = { + { "__index", texlib_aux_nest_getfield }, + { "__newindex", texlib_aux_nest_setfield }, + { NULL, NULL }, +}; + +static void texlib_aux_init_nest_lib(lua_State *L) +{ + luaL_newmetatable(L, TEX_NEST_INSTANCE); + luaL_setfuncs(L, texlib_nest_metatable, 0); + lua_pop(L, 1); +} + +/* getnest(<number>|top|ptr,[fieldname]) */ + +static int texlib_getnest(lua_State *L) +{ + int p = -1 ; + int t = lua_gettop(L); + if (t == 0) { + p = lmt_nest_state.nest_data.ptr; + } else { + switch (lua_type(L, 1)) { + case LUA_TNUMBER: + { + int ptr = lmt_tointeger(L, 1); + if (ptr >= 0 && ptr <= lmt_nest_state.nest_data.ptr) { + p = ptr; + } + } + break; + case LUA_TSTRING: + { + const char *s = lua_tostring(L, 1); + if (lua_key_eq(s, top)) { + p = lmt_nest_state.nest_data.ptr; + } else if (lua_key_eq(s, ptr)) { + lua_pushinteger(L, lmt_nest_state.nest_data.ptr); + return 1; + } + } + break; + } + } + if (p > -1) { + if (t > 1) { + const char *field = lua_tostring(L, 2); + if (field) { + texlib_get_nest_field(L, field, &lmt_nest_state.nest[p]); + } else { + lua_pushnil(L); + } + } else { + list_state_record **nestitem = lua_newuserdatauv(L, sizeof(list_state_record *), 0); + *nestitem = &lmt_nest_state.nest[p]; + luaL_getmetatable(L, TEX_NEST_INSTANCE); + lua_setmetatable(L, -2); + } + } else { + lua_pushnil(L); + } + return 1; +} + +/* setnest(<number>|top,fieldname,value) */ + +static int texlib_setnest(lua_State *L) +{ + if (lua_gettop(L) > 2) { + int p = -1 ; + switch (lua_type(L, 1)) { + case LUA_TNUMBER: + { + int ptr = lmt_tointeger(L, 1); + if (ptr >= 0 && ptr <= lmt_nest_state.nest_data.ptr) { + p = ptr; + } + } + break; + case LUA_TSTRING: + { + const char *s = lua_tostring(L, 1); + if (lua_key_eq(s, top)) { + p = lmt_nest_state.nest_data.ptr; + } + } + break; + } + if (p > -1) { + const char *field = lua_tostring(L, 2); + if (field) { + texlib_set_nest_field(L, 3, field, &lmt_nest_state.nest[p]); + } + } + } + return 0; +} + +static int texlib_round(lua_State *L) +{ + /* lua_pushinteger(L, lmt_roundedfloat((double) lua_tonumber(L, 1))); */ + lua_pushinteger(L, clippedround((double) lua_tonumber(L, 1))); + return 1; +} + +static int texlib_scale(lua_State *L) +{ + double delta = luaL_checknumber(L, 2); + switch (lua_type(L, 1)) { + case LUA_TTABLE: + { + /*tex + We could preallocate the table or maybe scale in-place. The + new table is at index 3. + */ + lua_newtable(L); + lua_pushnil(L); + while (lua_next(L, 1)) { + /*tex We have a numeric value. */ + lua_pushvalue(L, -2); + lua_insert(L, -2); + if (lua_type(L, -2) == LUA_TNUMBER) { + double m = (double) lua_tonumber(L, -1) * delta; + lua_pop(L, 1); + /* lua_pushinteger(L, lmt_roundedfloat(m)); */ + lua_pushinteger(L, clippedround(m)); + } + lua_rawset(L, 3); + } + } + break; + case LUA_TNUMBER: + /* lua_pushinteger(L, lmt_roundedfloat((double) lua_tonumber(L, 1) * delta)); */ + lua_pushinteger(L, clippedround((double) lua_tonumber(L, 1) * delta)); + break; + default: + lua_pushnil(L); + break; + } + return 1; +} + +/*tex + For compatibility reasons we keep the check for a boolean for a while. For consistency + we now support flags too: |global cs id|. + +*/ + +static int texlib_definefont(lua_State *L) +{ + size_t l; + int slot = 1; + int flags = (lua_isboolean(L, slot) && lua_toboolean(L, slot++)) ? add_global_flag(0) : 0; + const char *csname = lua_tolstring(L, slot++, &l); + halfword id = lmt_tohalfword(L, slot++); + int cs = tex_string_locate(csname, l, 1); + lmt_check_for_flags(L, slot, &flags, 1, 1); + tex_define(flags, cs, set_font_cmd, id); + return 0; +} + +static int texlib_hashtokens(lua_State *L) +{ + int cs = 1; + int nt = 0; + int nx = 0; + int all = lua_toboolean(L, 1); + lua_createtable(L, hash_size, 0); + if (all) { + while (cs <= hash_size) { + /* because strings never get freed we can as well directly access |s|. */ + strnumber s = cs_text(cs); + if (s > 0) { + halfword n = cs_next(cs); + char *ss = tex_makecstring(s); + if (n) { + int mt = 0; + lua_createtable(L, 2, 0); + lua_pushstring(L, ss); + lmt_memory_free(ss); + ++nt; + lua_rawseti(L, -2, ++mt); + while (n) { + s = cs_text(n); + if (s) { + ss = tex_makecstring(s); + lua_pushstring(L, ss); + lmt_memory_free(ss); + lua_rawseti(L, -2, ++mt); + ++nt; + ++nx; + } + n = cs_next(n); + } + } else { + lua_pushstring(L, ss); + lmt_memory_free(ss); + ++nt; + } + } else { + lua_pushboolean(L, 0); + } + lua_rawseti(L, -2, cs); + cs++; + } + } else { + while (cs < hash_size) { + strnumber s = cs_text(cs); + if (s > 0) { + halfword n = cs_next(cs); + char *ss = tex_makecstring(s); + lua_pushstring(L, ss); + lmt_memory_free(ss); + lua_rawseti(L, -2, ++nt); + while (n) { + s = cs_text(n); + if (s) { + ss = tex_makecstring(s); + lua_pushstring(L, ss); + lmt_memory_free(ss); + lua_rawseti(L, -2, ++nt); + ++nx; + } + n = cs_next(n); + } + } + cs++; + } + } + lua_pushinteger(L, --cs); + lua_pushinteger(L, nt); + lua_pushinteger(L, nx); + return 4; +} + +static int texlib_primitives(lua_State *L) +{ + int cs = 0; + int nt = 0; + lua_createtable(L, prim_size, 0); + while (cs < prim_size) { + strnumber s = get_prim_text(cs); + if (s > 0 && (get_prim_origin(cs) != no_command)) { + char *ss = tex_makecstring(s); + lua_pushstring(L, ss); + lmt_memory_free(ss); + lua_rawseti(L, -2, ++nt); + } + cs++; + } + return 1; +} + +static int texlib_extraprimitives(lua_State *L) +{ + int mask = 0; + int cs = 0; + int nt = 0; + int n = lua_gettop(L); + if (n == 0) { + mask = tex_command + etex_command + luatex_command; + } else { + for (int i = 1; i <= n; i++) { + if (lua_type(L, i) == LUA_TSTRING) { + const char *s = lua_tostring(L, i); + if (lua_key_eq(s, tex)) { + mask |= tex_command; + } else if (lua_key_eq(s, etex)) { + mask |= etex_command; + } else if (lua_key_eq(s, luatex)) { + mask |= luatex_command; + } + } + } + } + lua_createtable(L, prim_size, 0); + while (cs < prim_size) { + strnumber s = get_prim_text(cs); + if (s > 0 && (get_prim_origin(cs) & mask)) { + char *ss = tex_makecstring(s); + lua_pushstring(L, ss); + lmt_memory_free(ss); + lua_rawseti(L, -2, ++nt); + } + cs++; + } + return 1; +} + +static void texlib_aux_enableprimitive(const char *pre, size_t prel, const char *prm) +{ + strnumber s = tex_maketexstring(prm); + halfword prm_val = tex_prim_lookup(s); + tex_flush_str(s); + if (prm_val != undefined_primitive && get_prim_origin(prm_val) != no_command) { + char *newprm; + size_t newlen; + halfword cmd = get_prim_eq_type(prm_val); + halfword chr = get_prim_equiv(prm_val); + if (strncmp(pre, prm, prel) != 0) { + /* not a prefix */ + newlen = strlen(prm) + prel; + newprm = (char *) lmt_memory_malloc((size_t) newlen + 1); + if (newprm) { + strcpy(newprm, pre); + strcat(newprm + prel, prm); + } else { + tex_overflow_error("primitives", (int) newlen + 1); + } + } else { + newlen = strlen(prm); + newprm = (char *) lmt_memory_malloc((size_t) newlen + 1); + if (newprm) { + strcpy(newprm, prm); + } else { + tex_overflow_error("primitives", (int) newlen + 1); + } + } + if (newprm) { + halfword val = tex_string_locate(newprm, newlen, 1); + if (val == undefined_control_sequence || eq_type(val) == undefined_cs_cmd) { + tex_primitive_def(newprm, newlen, (singleword) cmd, chr); + } + lmt_memory_free(newprm); + } + } +} + +static int texlib_enableprimitives(lua_State *L) +{ + if (lua_gettop(L) == 2) { + size_t lpre; + const char *pre = luaL_checklstring(L, 1, &lpre); + switch (lua_type(L, 2)) { + case LUA_TTABLE: + { + int i = 1; + while (1) { + if (lua_rawgeti(L, 2, i) == LUA_TSTRING) { + const char *prm = lua_tostring(L, 3); + texlib_aux_enableprimitive(pre, lpre, prm); + } else { + lua_pop(L, 1); + break; + } + lua_pop(L, 1); + i++; + } + } + break; + case LUA_TBOOLEAN: + if (lua_toboolean(L, 2)) { + for (int cs = 0; cs < prim_size; cs++) { + strnumber s = get_prim_text(cs); + if (s > 0) { + /* there is actually no need to copy */ + char *prm = tex_makecstring(s); + texlib_aux_enableprimitive(pre, lpre, prm); + lmt_memory_free(prm); + } + } + } + break; + default: + luaL_error(L, "array of names or 'true' expected"); + } + } else { + luaL_error(L, "wrong number of arguments"); + } + return 0; +} + +/*tex penalties */ + +static halfword texlib_topenalties(lua_State *L, int i, quarterword s) +{ + int n = 0; + lua_pushnil(L); + while (lua_next(L, i)) { + n++; + lua_pop(L, 1); + } + if (n > 0) { + int j = 0; + halfword p = tex_new_specification_node(n, s, 0); /* todo: repeat */ + lua_pushnil(L); + while (lua_next(L, i)) { + j++; + if (lua_type(L, -1) == LUA_TNUMBER) { + tex_set_specification_penalty(p, j, lmt_tohalfword(L, -1)); + } + lua_pop(L, 1); + } + return p; + } else { + return null; + } +} + +/*tex We should check for proper glue spec nodes ... todo. */ + +# define get_dimen_par(P,A,B) \ + lua_push_key(A); \ + P = (lua_rawget(L, -2) == LUA_TNUMBER) ? lmt_roundnumber(L, -1) : B; \ + lua_pop(L, 1); + +# define get_glue_par(P,A,B) \ + lua_push_key(A); \ + P = (lua_rawget(L, -2) == LUA_TUSERDATA) ? lmt_check_isnode(L, -1) : B; \ + lua_pop(L, 1); + +# define get_integer_par(P,A,B) \ + lua_push_key(A); \ + P = (lua_rawget(L, -2) == LUA_TNUMBER) ? lmt_tohalfword(L, -1) : B; \ + lua_pop(L, 1); + +# define get_penalties_par(P,A,B,C) \ + lua_push_key(A); \ + P = (lua_rawget(L, -2) == LUA_TTABLE) ? texlib_topenalties(L, lua_gettop(L), C) : B; \ + lua_pop(L, 1); + +# define get_shape_par(P,A,B) \ + lua_push_key(A); \ + P = (lua_rawget(L, -2) == LUA_TTABLE) ? texlib_toparshape(L, lua_gettop(L)) : B; \ + lua_pop(L, 1); + +/*tex + The next function needs to be kept in sync with the regular linebreak handler, wrt the special + skips. This one can be called from within the callback so then we already have intialized. +*/ + + +/* par leftinit rightinit leftindent ... leftfill rightfill */ + +static int texlib_preparelinebreak(lua_State *L) +{ + halfword direct; + halfword par = lmt_check_isdirectornode(L, 1, &direct); + if (node_type(par) == par_node) { + halfword tail = tex_tail_of_node_list(par); + if (node_type(tail) == glue_node && node_subtype(tail) == par_fill_right_skip_glue) { + tex_formatted_warning("linebreak", "list seems already prepared"); + } else { + halfword parinit_left_skip_glue = null; + halfword parinit_right_skip_glue = null; + halfword parfill_left_skip_glue = null; + halfword parfill_right_skip_glue = null; + halfword final_penalty = null; + tex_line_break_prepare(par, &tail, &parinit_left_skip_glue, &parinit_right_skip_glue, &parfill_left_skip_glue, &parfill_right_skip_glue, &final_penalty); + lmt_push_directornode(L, par, direct); + lmt_push_directornode(L, tail, direct); + lmt_push_directornode(L, parinit_left_skip_glue, direct); + lmt_push_directornode(L, parinit_right_skip_glue, direct); + lmt_push_directornode(L, parfill_left_skip_glue , direct); + lmt_push_directornode(L, parfill_right_skip_glue, direct); + /* lmt_push_directornode(L, final_penalty, direct); */ /*tex Not that relevant to know. */ + return 6; + } + } + lua_pushnil(L); + return 1; +} + +static int texlib_linebreak(lua_State *L) +{ + // halfword par = lmt_check_isnode(L, 1); + halfword direct; + halfword par = lmt_check_isdirectornode(L, 1, &direct); + if (node_type(par) == par_node) { + line_break_properties properties; + halfword tail = par; + halfword has_indent = null; + halfword has_penalty = 0; + halfword prepared = 0; + properties.initial_par = par; + properties.display_math = 0; + properties.paragraph_dir = par_dir(par); + properties.parfill_left_skip = null; + properties.parfill_right_skip = null; + properties.parinit_left_skip = null; + properties.parinit_right_skip = null; + while (tail) { + switch (node_type(tail)) { + case glue_node: + switch (node_subtype(tail)) { + case indent_skip_glue: + if (has_indent) { + tex_formatted_warning("linebreak", "duplicate %s glue in tex.linebreak", "indent"); + goto NOTHING; + } else { + has_indent = 1; + } + break; + case par_fill_left_skip_glue: + if (properties.parfill_left_skip) { + tex_formatted_warning("linebreak", "duplicate %s glue in tex.linebreak", "leftskip"); + goto NOTHING; + } else { + properties.parfill_left_skip = tail; + } + break; + case par_fill_right_skip_glue: + if (properties.parfill_right_skip) { + tex_formatted_warning("linebreak", "duplicate %s glue in tex.linebreak", "rightskip"); + goto NOTHING; + } else { + properties.parfill_right_skip = tail; + } + break; + case par_init_left_skip_glue: + if (properties.parinit_left_skip) { + tex_formatted_warning("linebreak", "duplicate %s glue in tex.linebreak", "leftinit"); + goto NOTHING; + } else { + properties.parinit_left_skip = tail; + } + break; + case par_init_right_skip_glue: + if (properties.parinit_right_skip) { + tex_formatted_warning("linebreak", "duplicate %s glue in tex.linebreak", "rightinit"); + goto NOTHING; + } else { + properties.parinit_right_skip = tail; + } + break; + } + break; + case penalty_node: + if (node_subtype(tail) == line_penalty_subtype && penalty_amount(tail) == infinite_penalty && ! (properties.parfill_left_skip && properties.parfill_right_skip)) { + has_penalty = 1; + } + } + if (node_next(tail)) { + tail = node_next(tail); + } else { + break; + } + } + { + int has_init = properties.parinit_left_skip && properties.parinit_right_skip; + int has_fill = properties.parfill_left_skip && properties.parfill_right_skip; + if (lmt_linebreak_state.calling_back) { + if (has_indent && ! (has_init && has_fill && has_penalty)) { + tex_formatted_warning("linebreak", "[ par + leftinit + rightinit + indentglue + ... + penalty + leftfill + righfill ] expected"); + goto NOTHING; + } else if (! (has_fill && has_penalty)) { + tex_formatted_warning("linebreak", "[ par + indentbox + ... + penalty + leftfill + righfill ] expected"); + goto NOTHING; + } else { + prepared = 1; + } + } else { + if (! (has_indent && has_init && has_fill)) { + tex_formatted_warning("linebreak", "[ leftinit | rightinit | leftfill | rigthfill ] expected"); + goto NOTHING; + } else { + // prepared = 0; + prepared = has_init && has_fill; + } + } + } + tex_push_nest(); + node_next(temp_head) = par; + /*tex initialize local parameters */ + if (lua_gettop(L) != 2 || lua_type(L, 2) != LUA_TTABLE) { + lua_newtable(L); + } + lua_push_key(direction); + if (lua_rawget(L, -2) == LUA_TNUMBER) { + properties.paragraph_dir = checked_direction_value(lmt_tointeger(L, -1)); + } + lua_pop(L, 1); + get_integer_par (properties.tracing_paragraphs, tracingparagraphs, tracing_paragraphs_par); + get_integer_par (properties.pretolerance, pretolerance, tex_get_par_par(par, par_pre_tolerance_code)); + get_integer_par (properties.tolerance, tolerance, tex_get_par_par(par, par_tolerance_code)); + get_dimen_par (properties.emergency_stretch, emergencystretch, tex_get_par_par(par, par_emergency_stretch_code)); + get_integer_par (properties.looseness, looseness, tex_get_par_par(par, par_looseness_code)); + get_integer_par (properties.adjust_spacing, adjustspacing, tex_get_par_par(par, par_adjust_spacing_code)); + get_integer_par (properties.protrude_chars, protrudechars, tex_get_par_par(par, par_protrude_chars_code)); + get_integer_par (properties.adj_demerits, adjdemerits, tex_get_par_par(par, par_adj_demerits_code)); + get_integer_par (properties.line_penalty, linepenalty, tex_get_par_par(par, par_line_penalty_code)); + get_integer_par (properties.last_line_fit, lastlinefit, tex_get_par_par(par, par_last_line_fit_code)); + get_integer_par (properties.double_hyphen_demerits, doublehyphendemerits, tex_get_par_par(par, par_double_hyphen_demerits_code)); + get_integer_par (properties.final_hyphen_demerits, finalhyphendemerits, tex_get_par_par(par, par_final_hyphen_demerits_code)); + get_dimen_par (properties.hsize, hsize, tex_get_par_par(par, par_hsize_code)); + get_glue_par (properties.left_skip, leftskip, tex_get_par_par(par, par_left_skip_code)); + get_glue_par (properties.right_skip, rightskip, tex_get_par_par(par, par_right_skip_code)); + get_dimen_par (properties.hang_indent, hangindent, tex_get_par_par(par, par_hang_indent_code)); + get_integer_par (properties.hang_after, hangafter, tex_get_par_par(par, par_hang_after_code)); + get_integer_par (properties.inter_line_penalty, interlinepenalty, tex_get_par_par(par, par_inter_line_penalty_code)); + get_integer_par (properties.club_penalty, clubpenalty, tex_get_par_par(par, par_club_penalty_code)); + get_integer_par (properties.widow_penalty, widowpenalty, tex_get_par_par(par, par_widow_penalty_code)); + get_integer_par (properties.display_widow_penalty, displaywidowpenalty, tex_get_par_par(par, par_display_widow_penalty_code)); + get_integer_par (properties.orphan_penalty, orphanpenalty, tex_get_par_par(par, par_orphan_penalty_code)); + get_integer_par (properties.broken_penalty, brokenpenalty, tex_get_par_par(par, par_broken_penalty_code)); + get_glue_par (properties.baseline_skip, baselineskip, tex_get_par_par(par, par_baseline_skip_code)); + get_glue_par (properties.line_skip, lineskip, tex_get_par_par(par, par_line_skip_code)); + get_dimen_par (properties.line_skip_limit, lineskiplimit, tex_get_par_par(par, par_line_skip_limit_code)); + get_integer_par (properties.adjust_spacing, adjustspacing, tex_get_par_par(par, par_adjust_spacing_code)); + get_integer_par (properties.adjust_spacing_step, adjustspacingstep, tex_get_par_par(par, par_adjust_spacing_step_code)); + get_integer_par (properties.adjust_spacing_shrink, adjustspacingshrink, tex_get_par_par(par, par_adjust_spacing_shrink_code)); + get_integer_par (properties.adjust_spacing_stretch, adjustspacingstretch, tex_get_par_par(par, par_adjust_spacing_stretch_code)); + get_integer_par (properties.hyphenation_mode, hyphenationmode, tex_get_par_par(par, par_hyphenation_mode_code)); + get_integer_par (properties.shaping_penalties_mode, shapingpenaltiesmode, tex_get_par_par(par, par_shaping_penalties_mode_code)); + get_integer_par (properties.shaping_penalty, shapingpenalty, tex_get_par_par(par, par_shaping_penalty_code)); + get_shape_par (properties.par_shape, parshape, tex_get_par_par(par, par_par_shape_code)); + get_penalties_par(properties.inter_line_penalties, interlinepenalties, tex_get_par_par(par, par_inter_line_penalties_code), inter_line_penalties_code); + get_penalties_par(properties.club_penalties, clubpenalties, tex_get_par_par(par, par_club_penalties_code), club_penalties_code); + get_penalties_par(properties.widow_penalties, widowpenalties, tex_get_par_par(par, par_widow_penalties_code), widow_penalties_code); + get_penalties_par(properties.display_widow_penalties,displaywidowpenalties,tex_get_par_par(par, par_display_widow_penalties_code), display_widow_penalties_code); + get_penalties_par(properties.orphan_penalties, orphanpenalties, tex_get_par_par(par, par_orphan_penalties_code), orphan_penalties_code); + if (! prepared) { + halfword attr_template = tail; + halfword final_penalty = tex_new_penalty_node(infinite_penalty, line_penalty_subtype); + /* */ + get_glue_par(properties.parfill_left_skip, parfillleftskip, tex_get_par_par(par, par_par_fill_left_skip_code)); + get_glue_par(properties.parfill_right_skip, parfillrightskip, tex_get_par_par(par, par_par_fill_right_skip_code)); + get_glue_par(properties.parinit_left_skip, parinitleftskip, tex_get_par_par(par, par_par_init_left_skip_code)); + get_glue_par(properties.parinit_right_skip, parinitrightskip, tex_get_par_par(par, par_par_init_right_skip_code)); + /* */ + properties.parfill_left_skip = tex_new_glue_node(properties.parfill_left_skip, par_fill_left_skip_glue); + properties.parfill_right_skip = tex_new_glue_node(properties.parfill_right_skip, par_fill_right_skip_glue); + tex_attach_attribute_list_copy(final_penalty, attr_template); + tex_attach_attribute_list_copy(properties.parfill_left_skip, attr_template); + tex_attach_attribute_list_copy(properties.parfill_right_skip, attr_template); + tex_couple_nodes(tail, final_penalty); + tex_couple_nodes(final_penalty, properties.parfill_left_skip); + tex_couple_nodes(properties.parfill_left_skip, properties.parfill_right_skip); + if (node_next(par)) { /* test can go, also elsewhere */ + halfword n = node_next(par); + while (n) { + if (node_type(n) == glue_node && node_subtype(n) == indent_skip_glue) { + properties.parinit_left_skip = tex_new_glue_node(properties.parinit_left_skip, par_init_left_skip_glue); + properties.parinit_right_skip = tex_new_glue_node(properties.parinit_right_skip, par_init_right_skip_glue); + tex_attach_attribute_list_copy(properties.parinit_left_skip, attr_template); // maybe head .. also elsewhere + tex_attach_attribute_list_copy(properties.parinit_right_skip, attr_template); // maybe head .. also elsewhere + tex_try_couple_nodes(properties.parinit_right_skip, n); + tex_try_couple_nodes(properties.parinit_left_skip, properties.parinit_right_skip); + tex_try_couple_nodes(par, properties.parinit_left_skip); + break; + } else { + n = node_next(n); + } + } + } + } + lmt_linebreak_state.last_line_fill = properties.parfill_right_skip; /*tex I need to redo this. */ + tex_do_line_break(&properties); + { + halfword fewest_demerits = 0; + halfword actual_looseness = 0; + /*tex return the generated list, and its prevdepth */ + tex_get_linebreak_info(&fewest_demerits, &actual_looseness) ; + lmt_push_directornode(L, node_next(cur_list.head), direct); + lua_createtable(L, 0, 4); + /* set_integer_by_key(L, demerits, fewest_demerits); */ + lua_push_key(demerits); + lua_pushinteger(L, fewest_demerits); + lua_settable(L, -3); + /* set_integer_by_key(L, looseness, actual_looseness); */ + lua_push_key(looseness); + lua_pushinteger(L, actual_looseness); + lua_settable(L, -3); + /* set_integer_by_key(L, prevdepth, cur_list.prev_depth); */ + lua_push_key(prevdepth); + lua_pushinteger(L, cur_list.prev_depth); + lua_settable(L, -3); + /* set_integer_by_key(L, prevgraf, cur_list.prev_graf); */ + lua_push_key(prevgraf); + lua_pushinteger(L, cur_list.prev_graf); + lua_settable(L, -3); + } + tex_pop_nest(); + if (properties.par_shape != tex_get_par_par(par, par_par_shape_code)) { tex_flush_node(properties.par_shape); } + if (properties.inter_line_penalties != tex_get_par_par(par, par_inter_line_penalties_code)) { tex_flush_node(properties.inter_line_penalties); } + if (properties.club_penalties != tex_get_par_par(par, par_club_penalties_code)) { tex_flush_node(properties.club_penalties); } + if (properties.widow_penalties != tex_get_par_par(par, par_widow_penalties_code)) { tex_flush_node(properties.widow_penalties); } + if (properties.display_widow_penalties != tex_get_par_par(par, par_display_widow_penalties_code)) { tex_flush_node(properties.display_widow_penalties); } + if (properties.orphan_penalties != tex_get_par_par(par, par_orphan_penalties_code)) { tex_flush_node(properties.orphan_penalties); } + return 2; + } else { + tex_formatted_warning("linebreak", "[ par ... ] expected"); + } + NOTHING: + lmt_push_directornode(L, par, direct); + return 1; +} + +static int texlib_resetparagraph(lua_State *L) +{ + (void) L; + tex_normal_paragraph(reset_par_context); + return 0; +} + +static int texlib_shipout(lua_State *L) +{ + int boxnum = lmt_get_box_id(L, 1, 1); + if (box_register(boxnum)) { + tex_flush_node_list(box_register(boxnum)); + box_register(boxnum) = null; + } + return 0; +} + +static int texlib_badness(lua_State *L) +{ + scaled t = lmt_roundnumber(L, 1); + scaled s = lmt_roundnumber(L, 2); + lua_pushinteger(L, tex_badness(t, s)); + return 1; +} + +static int texlib_showcontext(lua_State *L) +{ + (void) L; + tex_show_context(); + return 0; +} + +/*tex + When we pass |true| the page builder will only be invoked in the main vertical list in which + case |lmt_nest_state.nest_data.ptr == 1| or |cur_list.mode != vmode|. +*/ + +static int texlib_triggerbuildpage(lua_State *L) +{ + if (lua_toboolean(L, 1) && cur_list.mode != vmode) { + return 0; + } + tex_build_page(); + return 0; +} + +static int texlib_getpagestate(lua_State *L) +{ + lua_pushinteger(L, lmt_page_builder_state.contents); + return 1; +} + +static int texlib_getlocallevel(lua_State *L) +{ + lua_pushinteger(L, lmt_main_control_state.local_level); + return 1; +} + +/* input state aka synctex */ + +static int texlib_setinputstatemode(lua_State *L) +{ + input_file_state.mode = lmt_tohalfword(L, 1); + return 0; +} +static int texlib_getinputstatemode(lua_State *L) +{ + lua_pushinteger(L, input_file_state.mode); + return 1; +} + +static int texlib_setinputstatefile(lua_State *L) +{ + lmt_input_state.cur_input.state_file = lmt_tointeger(L, 1); + return 0; +} + +static int texlib_getinputstatefile(lua_State *L) +{ + lua_pushinteger(L, lmt_input_state.cur_input.state_file); + return 1; +} + +static int texlib_forceinputstatefile(lua_State *L) +{ + input_file_state.forced_file = lmt_tointeger(L, 1); + return 0; +} + +static int texlib_forceinputstateline(lua_State *L) +{ + input_file_state.forced_line = lmt_tointeger(L, 1); + return 0; +} + +static int texlib_setinputstateline(lua_State *L) +{ + input_file_state.line = lmt_tohalfword(L, 1); + return 0; +} + +static int texlib_getinputstateline(lua_State *L) +{ + lua_pushinteger(L, input_file_state.line); + return 1; +} + +/*tex + This is experimental and might change. In version 10 we hope to have the final version available. + It actually took quite a bit of time to understand the implications of mixing lua prints in here. + The current variant is (so far) the most robust (wrt crashes and side effects). +*/ + +// # define mode cur_list.mode_field + +/*tex + When we add save levels then we can get crashes when one flushed bad groups due to out of order + flushing. So we play safe! But still we can have issues so best make sure you're in hmode. +*/ + +static int texlib_forcehmode(lua_State *L) +{ + if (abs(cur_list.mode) == vmode) { + if (lua_type(L, 1) == LUA_TBOOLEAN) { + tex_begin_paragraph(lua_toboolean(L, 1), force_par_begin); + } else { + tex_begin_paragraph(1, force_par_begin); + } + } + return 0; +} + +/* tex + The first argument can be a number (of a token register), a macro name or the name of a token + list. The second argument is optional and when true forces expansion inside a definition. The + optional third argument can be used to force oing. The return value indicates an error: 0 + means no error, 1 means that a bad register number has been passed, a value of 2 indicated an + unknown register or macro name, while 3 reports that the macro is not suitable for local + control because it takes arguments. +*/ + +static int texlib_runlocal(lua_State *L) +{ + // int obeymode = lua_toboolean(L, 4); + int obeymode = 1; /* always 1 */ + halfword tok = -1; + int mac = 0 ; + switch (lua_type(L, 1)) { + case LUA_TFUNCTION: + { + /* todo: also a variant that calls an already registered function */ + int ref; + halfword r, t; + lua_pushvalue(L, 1); + ref = luaL_ref(L, LUA_REGISTRYINDEX); + r = tex_get_available_token(token_val(end_local_cmd, 0)); + t = tex_get_available_token(token_val(lua_local_call_cmd, ref)); + token_link(t) = r; + tex_begin_inserted_list(t); + if (lmt_token_state.luacstrings > 0) { + tex_lua_string_start(); + } + if (tracing_nesting_par > 2) { + tex_local_control_message("entering token scanner via function"); + } + tex_local_control(obeymode); + luaL_unref(L, LUA_REGISTRYINDEX, ref); + return 0; + } + case LUA_TNUMBER: + { + halfword k = lmt_checkhalfword(L, 1); + if (k >= 0 && k <= 65535) { + tok = toks_register(k); + goto TOK; + } else { + tex_local_control_message("invalid token register number"); + return 0; + } + } + case LUA_TSTRING: + { + size_t lname = 0; + const char *name = lua_tolstring(L, 1, &lname); + int cs = tex_string_locate(name, lname, 0); + int cmd = eq_type(cs); + if (cmd < call_cmd) { // is_call_cmd + // todo: use the better register helpers and range checkers + switch (cmd) { + case register_toks_cmd: + tok = toks_register(register_toks_number(eq_value(cs))); + goto TOK; + case undefined_cs_cmd: + tex_local_control_message("undefined macro or token register"); + return 0; + default: + /* like cs == case undefined_control_sequence */ + tex_local_control_message("invalid macro or token register"); + return 0; + } + } else { + halfword ref = eq_value(cs); + halfword head = token_link(ref); + if (head && get_token_parameters(ref)) { + tex_local_control_message("macro takes arguments and is ignored"); + return 0; + } else { + tok = cs_token_flag + cs; + mac = 1 ; + goto TOK; + } + } + } + case LUA_TUSERDATA: + /* no checking yet */ + tok = token_info(lmt_token_code_from_lua(L, 1)); + mac = 1; + goto TOK; + default: + return 0; + } + TOK: + if (tok < 0) { + /* nothing to do */ + } else if (lmt_input_state.scanner_status != scanner_is_defining || lua_toboolean(L, 2)) { + // todo: make list + int grouped = lua_toboolean(L, 3); + if (grouped) { + tex_begin_inserted_list(tex_get_available_token(token_val(right_brace_cmd, 0))); + } + tex_begin_inserted_list(tex_get_available_token(token_val(end_local_cmd, 0))); + if (mac) { + tex_begin_inserted_list(tex_get_available_token(tok)); + } else { + tex_begin_token_list(tok, local_text); + } + if (grouped) { + tex_begin_inserted_list(tex_get_available_token(token_val(left_brace_cmd, 0))); + } + /*tex hm, needed here? */ + if (lmt_token_state.luacstrings > 0) { + tex_lua_string_start(); + } + if (tracing_nesting_par > 2) { + if (mac) { + tex_local_control_message("entering token scanner via macro"); + } else { + tex_local_control_message("entering token scanner via register"); + } + } + tex_local_control(obeymode); + } else if (mac) { + tex_back_input(tok); + } else { + halfword h = null; + halfword t = null; + halfword r = token_link(tok); + while (r) { + t = tex_store_new_token(t, token_info(r)); + if (! h) { + h = t; + } + r = token_link(r); + } + tex_begin_inserted_list(h); + } + return 0; +} + +static int texlib_quitlocal(lua_State *L) +{ + (void) L; + if (tracing_nesting_par > 2) { + tex_local_control_message("quitting token scanner"); + } + tex_end_local_control(); + return 0; +} + +/* todo: no tryagain and justincase here */ + +static int texlib_expandasvalue(lua_State *L) /* mostly like the mp one */ +{ + int kind = lmt_tointeger(L, 1); + halfword tail = null; + halfword head = lmt_macro_to_tok(L, 2, &tail); + if (head) { + switch (kind) { + case lua_value_none_code: + case lua_value_dimension_code: + { + halfword value = 0; + halfword space = tex_get_available_token(space_token); + halfword relax = tex_get_available_token(deep_frozen_relax_token); + token_link(tail) = space; + token_link(space) = relax; + tex_begin_inserted_list(head); + lmt_error_state.intercept = 1; + lmt_error_state.last_intercept = 0; + value = tex_scan_dimen(0, 0, 0, 0, NULL); + lmt_error_state.intercept = 0; + while (cur_tok != deep_frozen_relax_token) { + tex_get_token(); + } + if (! lmt_error_state.last_intercept) { + lua_pushinteger(L, value); + break; + } else if (kind == lua_value_none_code) { + head = lmt_macro_to_tok(L, 2, &tail); + goto TRYAGAIN; + } else { + head = lmt_macro_to_tok(L, 2, &tail); + goto JUSTINCASE; + } + } + case lua_value_integer_code: + case lua_value_cardinal_code: + case lua_value_boolean_code: + TRYAGAIN: + { + halfword value = 0; + halfword space = tex_get_available_token(space_token); + halfword relax = tex_get_available_token(deep_frozen_relax_token); + token_link(tail) = space; + token_link(space) = relax; + tex_begin_inserted_list(head); + lmt_error_state.intercept = 1; + lmt_error_state.last_intercept = 0; + value = tex_scan_int(0, NULL); + lmt_error_state.intercept = 0; + while (cur_tok != deep_frozen_relax_token) { + tex_get_token(); + } + if (lmt_error_state.last_intercept) { + head = lmt_macro_to_tok(L, 2, &tail); + goto JUSTINCASE; + } else if (kind == lua_value_boolean_code) { + lua_pushboolean(L, value); + break; + } else { + lua_pushinteger(L, value); + break; + } + } + default: + JUSTINCASE: + { + int len = 0; + const char *str = (const char *) lmt_get_expansion(head, &len); + lua_pushlstring(L, str, str ? len : 0); /* len includes \0 */ + break; + } + } + return 1; + } else { + return 0; + } +} + +/* string, expand-in-def, group */ + +static int texlib_runstring(lua_State *L) +{ + int top = lua_gettop(L); + if (top > 0) { + size_t lstr = 0; + const char *str = NULL; + int slot = 1; + halfword ct = lua_type(L, slot) == LUA_TNUMBER ? lmt_tohalfword(L, slot++) : cat_code_table_par; + if (! tex_valid_catcode_table(ct)) { + ct = cat_code_table_par; + } + str = lua_tolstring(L, slot++, &lstr); + if (lstr > 0) { + int obeymode = 1; /* always 1 */ + int expand = lua_toboolean(L, slot++); + int grouped = lua_toboolean(L, slot++); + int ignore = lua_toboolean(L, slot++); + halfword h = get_reference_token(); + halfword t = h; + if (grouped) { + // t = tex_store_new_token(a, left_brace_token + '{'); + t = tex_store_new_token(t, token_val(right_brace_cmd, 0)); + } + /*tex Options: 1=create (will trigger an error), 2=ignore. */ + tex_parse_str_to_tok(h, &t, ct, str, lstr, ignore ? 2 : 1); + if (grouped) { + // t = tex_store_new_token(a, left_brace_token + '}'); + t = tex_store_new_token(t, token_val(left_brace_cmd, 0)); + } + if (lmt_input_state.scanner_status != scanner_is_defining || expand) { + // t = tex_store_new_token(t, token_val(end_local_cmd, 0)); + tex_begin_inserted_list(tex_get_available_token(token_val(end_local_cmd, 0))); + tex_begin_token_list(h, local_text); + if (lmt_token_state.luacstrings > 0) { + tex_lua_string_start(); + } + if (tracing_nesting_par > 2) { + tex_local_control_message("entering token scanner via register"); + } + tex_local_control(obeymode); + } else { + tex_begin_inserted_list(h); + } + } + } + return 0; +} + +/* new, can go into luatex too */ + +static int texlib_getmathdir(lua_State *L) +{ + lua_pushinteger(L, math_direction_par); + return 0; +} + +static int texlib_setmathdir(lua_State *L) +{ + tex_set_math_dir(lmt_tohalfword(L, 1)); + return 0; +} + +static int texlib_getpardir(lua_State *L) +{ + lua_pushinteger(L, par_direction_par); + return 1; +} + +static int texlib_setpardir(lua_State *L) +{ + tex_set_par_dir(lmt_tohalfword(L, 1)); + return 0; +} + +static int texlib_gettextdir(lua_State *L) +{ + lua_pushinteger(L, text_direction_par); + return 1; +} + +static int texlib_settextdir(lua_State *L) +{ + tex_set_text_dir(lmt_tohalfword(L, 1)); + return 0; +} + +/* Getting the line direction makes no sense, it's just the text direction. */ + +static int texlib_setlinedir(lua_State *L) +{ + tex_set_line_dir(lmt_tohalfword(L, 1)); + return 0; +} + +static int texlib_getboxdir(lua_State *L) +{ + int index = lmt_tointeger(L, 1); + if (index >= 0 && index <= max_box_register_index) { + if (box_register(index)) { + lua_pushinteger(L, box_dir(box_register(index))); + } else { + lua_pushnil(L); + } + return 1; + } else { + texlib_aux_show_box_index_error(L); + } + return 0; +} + +static int texlib_setboxdir(lua_State *L) +{ + int index = lmt_tointeger(L, 1); + if (index >= 0 && index <= max_box_register_index) { + tex_set_box_dir(index, lmt_tointeger(L, 2)); + } else { + texlib_aux_show_box_index_error(L); + } + return 0; +} + +static int texlib_gethelptext(lua_State *L) +{ + if (lmt_error_state.help_text) { + lua_pushstring(L, lmt_error_state.help_text); + } else { + lua_pushnil(L); + } + return 1; +} + +static int texlib_setinteraction(lua_State *L) +{ + if (lua_type(L,1) == LUA_TNUMBER) { + int i = lmt_tointeger(L, 1); + if (i >= 0 && i <= 3) { + lmt_error_state.interaction = i; + } + } + return 0; +} + +static int texlib_getinteraction(lua_State *L) +{ + lua_pushinteger(L, lmt_error_state.interaction); + return 1; +} + +static int texlib_setglyphdata(lua_State *L) +{ + update_tex_glyph_data(0, lmt_opthalfword(L, 1, unused_attribute_value)); + return 0; +} + +static int texlib_getglyphdata(lua_State *L) +{ + lua_pushinteger(L, glyph_data_par); + return 1; +} + +static int texlib_setglyphstate(lua_State *L) +{ + update_tex_glyph_state(0, lmt_opthalfword(L, 1, unused_state_value)); + return 0; +} + +static int texlib_getglyphstate(lua_State *L) +{ + lua_pushinteger(L, glyph_state_par); + return 1; +} + +static int texlib_setglyphscript(lua_State *L) +{ + update_tex_glyph_script(0, lmt_opthalfword(L, 1, unused_script_value)); + return 0; +} + +static int texlib_getglyphscript(lua_State *L) +{ + lua_pushinteger(L, glyph_script_par); + return 1; +} + +static int texlib_getglyphscales(lua_State *L) +{ + lua_pushinteger(L, glyph_scale_par); + lua_pushinteger(L, glyph_x_scale_par); + lua_pushinteger(L, glyph_y_scale_par); + lua_pushinteger(L, glyph_data_par); + return 4; +} + +static int texlib_fatalerror(lua_State *L) +{ + const char *s = lua_tostring(L, 1); + tex_fatal_error(s); + return 1; +} + +static int texlib_lastnodetype(lua_State *L) +{ + halfword tail = cur_list.tail; + int t = -1; + int s = -1; + if (tail) { + halfword mode = cur_list.mode; + if (mode != nomode && tail != contribute_head && node_type(tail) != glyph_node) { + t = node_type(tail); + s = node_subtype(tail); + } else if (mode == vmode && tail == cur_list.head) { + t = lmt_page_builder_state.last_node_type; + s = lmt_page_builder_state.last_node_subtype; + } else if (mode == nomode || tail == cur_list.head) { + /* already -1 */ + } else { + t = node_type(tail); + s = node_subtype(tail); + } + } + if (t >= 0) { + lua_pushinteger(L, t); + lua_pushinteger(L, s); + } else { + lua_pushnil(L); + lua_pushnil(L); + } + return 2; +} + +/* we can have all defs here */ + +static int texlib_chardef(lua_State *L) +{ + size_t l; + const char *s = lua_tolstring(L, 1, &l); + if (s) { + int cs = tex_string_locate(s, l, 1); + int flags = 0; + lmt_check_for_flags(L, 3, &flags, 1, 0); + if (tex_define_permitted(cs, flags)) { + int code = lmt_tointeger(L, 2); + if (code >= 0 && code <= max_character_code) { + tex_define(flags, cs, (quarterword) char_given_cmd, code); + } else { + tex_formatted_error("lua", "chardef only accepts codes in the range 0-%i", max_character_code); + } + } + } + return 0; +} + +/* todo: same range checks as in texlib_setmathcode */ + +static int texlib_mathchardef(lua_State *L) +{ + size_t l; + const char *s = lua_tolstring(L, 1, &l); + if (s) { + int cs = tex_string_locate(s, l, 1); + int flags = 0; + lmt_check_for_flags(L, 5, &flags, 1, 0); + if (tex_define_permitted(cs, flags)) { + mathcodeval m; + mathdictval d; + m.class_value = lmt_tointeger(L, 2); + m.family_value = lmt_tointeger(L, 3); + m.character_value = lmt_tointeger(L, 4); + d.properties = lmt_optquarterword(L, 6, 0); + d.group = lmt_optquarterword(L, 7, 0); + d.index = lmt_optinteger(L, 8, 0); + if (class_in_range(m.class_value) && family_in_range(m.family_value) && character_in_range(m.character_value)) { + tex_define(flags, cs, mathspec_cmd, tex_new_math_dict_spec(d, m, umath_mathcode)); + // halfword code = math_packed_character(m.class_value, m.family_value, m.character_value); + // tex_define(flags, cs, (quarterword) math_char_xgiven_cmd, code); + } else { + tex_normal_error("lua", "mathchardef needs proper class, family and character codes"); + } + } else { + /* maybe a message */ + } + } + return 0; +} + +static int texlib_setintegervalue(lua_State *L) +{ + size_t l; + const char *s = lua_tolstring(L, 1, &l); + if (s) { + int cs = tex_string_locate(s, l, 1); + int flags = 0; + lmt_check_for_flags(L, 3, &flags, 1, 0); + if (tex_define_permitted(cs, flags)) { + int value = lmt_optroundnumber(L, 2, 0); + if (value >= min_integer && value <= max_integer) { + tex_define(flags, cs, (quarterword) integer_cmd, value); + } else { + tex_formatted_error("lua", "integer only accepts values in the range %i-%i", min_integer, max_integer); + } + } + } + return 0; +} + +static int texlib_setdimensionvalue(lua_State *L) +{ + size_t l; + const char *s = lua_tolstring(L, 1, &l); + if (s) { + int cs = tex_string_locate(s, l, 1); + int flags = 0; + lmt_check_for_flags(L, 3, &flags, 1, 0); + if (tex_define_permitted(cs, flags)) { + int value = lmt_optroundnumber(L, 2, 0); + if (value >= min_dimen && value <= max_dimen) { + tex_define(flags, cs, (quarterword) dimension_cmd, value); + } else { + tex_formatted_error("lua", "dimension only accepts values in the range %i-%i", min_dimen, max_dimen); + } + } + } + return 0; +} + +// static int texlib_setgluespecvalue(lua_State *L) +// { +// return 0; +// } + +static int texlib_aux_getvalue(lua_State *L, halfword level, halfword cs) +{ + halfword chr = eq_value(cs); + if (chr && ! get_token_parameters(chr)) { + halfword value = 0; + tex_begin_inserted_list(tex_get_available_token(cs_token_flag + cs)); + if (tex_scan_tex_value(level, &value)) { + lua_pushinteger(L, value); + return 1; + } + } + lua_pushnil(L); + return 1; +} + +static int texlib_getintegervalue(lua_State *L) /* todo, now has duplicate in tokenlib */ +{ + if (lua_type(L, 1) == LUA_TSTRING) { + size_t l; + const char *s = lua_tolstring(L, 1, &l); + if (l > 0) { + int cs = tex_string_locate(s, l, 0); + switch (eq_type(cs)) { + case integer_cmd: + lua_pushinteger(L, eq_value(cs)); + return 1; + case call_cmd: + case protected_call_cmd: + case semi_protected_call_cmd: + return texlib_aux_getvalue(L, int_val_level, cs); + default: + /* twice a lookup but fast enough for now */ + return texlib_getcount(L); + } + } + } + lua_pushnil(L); + return 1; +} + +static int texlib_getdimensionvalue(lua_State *L) /* todo, now has duplicate in tokenlib */ +{ + if (lua_type(L, 1) == LUA_TSTRING) { + size_t l; + const char *s = lua_tolstring(L, 1, &l); + if (l > 0) { + int cs = tex_string_locate(s, l, 0); + switch (eq_type(cs)) { + case dimension_cmd: + lua_pushinteger(L, eq_value(cs)); + return 1; + case call_cmd: + case protected_call_cmd: + case semi_protected_call_cmd: + return texlib_aux_getvalue(L, dimen_val_level, cs); + default: + /* twice a lookup but fast enough for now */ + return texlib_getdimen(L); + } + } + } + lua_pushnil(L); + return 1; +} + +// static int texlib_getgluespecvalue(lua_State *L) /* todo, now has duplicate in tokenlib */ +// { +// return 1; +// } + +/*tex + Negative values are internal and inline. At some point I might do this as with modes and tokens + although we don't have lookups here. + + In these list we don't really need the predefined keys. +*/ + +static int texlib_getmodevalues(lua_State *L) +{ + lua_createtable(L, 4, 1); + lua_push_key_at_index(L, unset, nomode); + lua_push_key_at_index(L, vertical, vmode); + lua_push_key_at_index(L, horizontal, hmode); + lua_push_key_at_index(L, math, mmode); + return 1; +} + +static int texlib_getmode(lua_State *L) +{ + lua_pushinteger(L, abs(cur_list.mode)); + return 1; +} + +static int texlib_getrunstatevalues(lua_State *L) +{ + lua_createtable(L, 2, 1); + lua_set_string_by_index(L, initializing_state, "initializing"); + lua_set_string_by_index(L, updating_state, "updating"); + lua_set_string_by_index(L, production_state, "production"); + return 1; +} + +static int texlib_setrunstate(lua_State *L) +{ + int state = lmt_tointeger(L, 1); + if (state == updating_state || state == production_state) { + lmt_main_state.run_state = state; + } + return 0; +} + +static int texlib_gethyphenationvalues(lua_State *L) +{ + lua_createtable(L, 2, 17); + lua_push_key_at_index(L, normal, normal_hyphenation_mode); + lua_push_key_at_index(L, automatic, automatic_hyphenation_mode); + lua_push_key_at_index(L, explicit, explicit_hyphenation_mode); + lua_push_key_at_index(L, syllable, syllable_hyphenation_mode); + lua_push_key_at_index(L, uppercase, uppercase_hyphenation_mode); + lua_push_key_at_index(L, compound, compound_hyphenation_mode); + lua_push_key_at_index(L, strictstart, strict_start_hyphenation_mode); + lua_push_key_at_index(L, strictend, strict_end_hyphenation_mode); + lua_push_key_at_index(L, automaticpenalty, automatic_penalty_hyphenation_mode); + lua_push_key_at_index(L, explicitpenalty, explicit_penalty_hyphenation_mode); + lua_push_key_at_index(L, permitglue, permit_glue_hyphenation_mode); + lua_push_key_at_index(L, permitall, permit_all_hyphenation_mode); + lua_push_key_at_index(L, permitmathreplace, permit_math_replace_hyphenation_mode); + lua_push_key_at_index(L, forcecheck, force_check_hyphenation_mode); + lua_push_key_at_index(L, lazyligatures, lazy_ligatures_hyphenation_mode); + lua_push_key_at_index(L, forcehandler, force_handler_hyphenation_mode); + lua_push_key_at_index(L, feedbackcompound, feedback_compound_hyphenation_mode); + lua_push_key_at_index(L, ignorebounds, ignore_bounds_hyphenation_mode); + lua_push_key_at_index(L, collapse, collapse_hyphenation_mode); + return 1; +} + +static int texlib_getglyphoptionvalues(lua_State *L) +{ + lua_createtable(L, 3, 7); + lua_set_string_by_index(L, glyph_option_normal_glyph, "normal"); + lua_set_string_by_index(L, glyph_option_no_left_ligature, "noleftligature"); + lua_set_string_by_index(L, glyph_option_no_right_ligature, "norightligature"); + lua_set_string_by_index(L, glyph_option_no_left_kern, "noleftkern"); + lua_set_string_by_index(L, glyph_option_no_right_kern, "norightkern"); + lua_set_string_by_index(L, glyph_option_no_expansion, "noexpansion"); + lua_set_string_by_index(L, glyph_option_no_protrusion, "noprotrusion"); + lua_set_string_by_index(L, glyph_option_no_italic_correction, "noitaliccorrection"); + lua_set_string_by_index(L, glyph_option_math_discretionary, "mathdiscretionary"); + lua_set_string_by_index(L, glyph_option_math_italics_too, "mathsitalicstoo"); + return 1; +} + +static int texlib_getnoadoptionvalues(lua_State *L) +{ + lua_createtable(L, 2, 32); + lua_push_key_at_index(L, axis, noad_option_axis); + lua_push_key_at_index(L, noaxis, noad_option_no_axis); + lua_push_key_at_index(L, exact, noad_option_exact); + lua_push_key_at_index(L, left, noad_option_left); + lua_push_key_at_index(L, middle, noad_option_middle); + lua_push_key_at_index(L, right, noad_option_right); + lua_push_key_at_index(L, adapttoleftsize, noad_option_adapt_to_left_size); + lua_push_key_at_index(L, adapttorightsize, noad_option_adapt_to_right_size); + lua_push_key_at_index(L, nosubscript, noad_option_no_sub_script); + lua_push_key_at_index(L, nosuperscript, noad_option_no_super_script); + lua_push_key_at_index(L, nosubprescript, noad_option_no_sub_pre_script); + lua_push_key_at_index(L, nosuperprescript, noad_option_no_super_pre_script); + lua_push_key_at_index(L, noscript, noad_option_no_script); + lua_push_key_at_index(L, nooverflow, noad_option_no_overflow); + lua_push_key_at_index(L, void, noad_option_void); + lua_push_key_at_index(L, phantom, noad_option_phantom); + lua_push_key_at_index(L, openupheight, noad_option_openup_height); + lua_push_key_at_index(L, openupdepth, noad_option_openup_depth); + lua_push_key_at_index(L, limits, noad_option_limits); + lua_push_key_at_index(L, nolimits, noad_option_no_limits); + lua_push_key_at_index(L, preferfontthickness, noad_option_prefer_font_thickness); + lua_push_key_at_index(L, noruling, noad_option_no_ruling); + lua_push_key_at_index(L, shiftedsubscript, noad_option_shifted_sub_script); + lua_push_key_at_index(L, shiftedsuperscript, noad_option_shifted_super_script); + lua_push_key_at_index(L, shiftedsubprescript, noad_option_shifted_sub_pre_script); + lua_push_key_at_index(L, shiftedsuperprescript, noad_option_shifted_super_pre_script); + lua_push_key_at_index(L, unpacklist, noad_option_unpack_list); + lua_push_key_at_index(L, nocheck, noad_option_no_check); + lua_push_key_at_index(L, auto, noad_option_auto); + lua_push_key_at_index(L, unrolllist, noad_option_unroll_list); + lua_push_key_at_index(L, followedbyspace, noad_option_followed_by_space); + return 1; +} + +static int texlib_getdiscoptionvalues(lua_State *L) +{ + lua_createtable(L, 2, 1); + lua_set_string_by_index(L, disc_option_normal_word, "normalword"); + lua_set_string_by_index(L, disc_option_pre_word, "preword"); + lua_set_string_by_index(L, disc_option_post_word, "postword"); + return 1; +} + +static int texlib_getlistanchorvalues(lua_State *L) +{ + lua_createtable(L, 14, 0); + lua_set_string_by_index(L, left_origin_anchor, "leftorigin"); + lua_set_string_by_index(L, left_height_anchor, "leftheight"); + lua_set_string_by_index(L, left_depth_anchor, "leftdepth"); + lua_set_string_by_index(L, right_origin_anchor, "rightorigin"); + lua_set_string_by_index(L, right_height_anchor, "rightheight"); + lua_set_string_by_index(L, right_depth_anchor, "rightdepth"); + lua_set_string_by_index(L, center_origin_anchor, "centerorigin"); + lua_set_string_by_index(L, center_height_anchor, "centerheight"); + lua_set_string_by_index(L, center_depth_anchor, "centerdepth"); + lua_set_string_by_index(L, halfway_total_anchor, "halfwaytotal"); + lua_set_string_by_index(L, halfway_height_anchor, "halfwayheight"); + lua_set_string_by_index(L, halfway_depth_anchor, "halfwaydepth"); + lua_set_string_by_index(L, halfway_left_anchor, "halfwayleft"); + lua_set_string_by_index(L, halfway_right_anchor, "halfwayright"); + return 1; +} + +static int texlib_getlistsignvalues(lua_State *L) +{ + lua_createtable(L, 0, 2); + lua_set_string_by_index(L, negate_x_anchor, "negatex"); + lua_set_string_by_index(L, negate_y_anchor, "negatey"); + return 1; +} + +static int texlib_getlistgeometryalues(lua_State *L) +{ + lua_createtable(L, 3, 0); + lua_set_string_by_index(L, offset_geometry, "offset"); + lua_set_string_by_index(L, orientation_geometry, "orientation"); + lua_set_string_by_index(L, anchor_geometry, "anchor"); + return 1; +} + +static int texlib_getautomigrationvalues(lua_State *L) +{ + lua_createtable(L, 2, 3); + lua_push_key_at_index(L, mark, auto_migrate_mark); + lua_push_key_at_index(L, insert, auto_migrate_insert); + lua_push_key_at_index(L, adjust, auto_migrate_adjust); + lua_push_key_at_index(L, pre, auto_migrate_pre); + lua_push_key_at_index(L, post, auto_migrate_post); + return 1; +} + +static int texlib_getflagvalues(lua_State *L) +{ + lua_createtable(L, 2, 15); + lua_push_key_at_index(L, frozen, frozen_flag_bit); + lua_push_key_at_index(L, permanent, permanent_flag_bit); + lua_push_key_at_index(L, immutable, immutable_flag_bit); + lua_push_key_at_index(L, primitive, primitive_flag_bit); + lua_push_key_at_index(L, mutable, mutable_flag_bit); + lua_push_key_at_index(L, noaligned, noaligned_flag_bit); + lua_push_key_at_index(L, instance, instance_flag_bit); + lua_push_key_at_index(L, untraced, untraced_flag_bit); + lua_push_key_at_index(L, global, global_flag_bit); + lua_push_key_at_index(L, tolerant, tolerant_flag_bit); + lua_push_key_at_index(L, protected, protected_flag_bit); + lua_push_key_at_index(L, overloaded, overloaded_flag_bit); + lua_push_key_at_index(L, aliased, aliased_flag_bit); + lua_push_key_at_index(L, immediate, immediate_flag_bit); + lua_push_key_at_index(L, conditional, conditional_flag_bit); + lua_push_key_at_index(L, value, value_flag_bit); + return 1; +} + +static int texlib_getspecialmathclassvalues(lua_State *L) +{ + lua_createtable(L, 0, 3); + lua_set_string_by_index(L, math_all_class, "all"); + lua_set_string_by_index(L, math_begin_class, "begin"); + lua_set_string_by_index(L, math_end_class, "end"); + return 1; +} + +static int texlib_getmathclassoptionvalues(lua_State *L) +{ + lua_createtable(L, 2, 19); + lua_set_string_by_index(L, no_pre_slack_class_option, "nopreslack"); + lua_set_string_by_index(L, no_post_slack_class_option, "nopostslack"); + lua_set_string_by_index(L, left_top_kern_class_option, "lefttopkern"); + lua_set_string_by_index(L, right_top_kern_class_option, "righttopkern"); + lua_set_string_by_index(L, left_bottom_kern_class_option, "leftbottomkern"); + lua_set_string_by_index(L, right_bottom_kern_class_option, "rightbottomkern"); + lua_set_string_by_index(L, look_ahead_for_end_class_option, "lookaheadforend"); + lua_set_string_by_index(L, no_italic_correction_class_option, "noitaliccorrection"); + lua_set_string_by_index(L, check_ligature_class_option, "checkligature"); + lua_set_string_by_index(L, check_kern_pair_class_option, "checkkernpair"); + lua_set_string_by_index(L, check_italic_correction_class_option, "checkitaliccorrection"); + lua_set_string_by_index(L, flatten_class_option, "flatten"); + lua_set_string_by_index(L, omit_penalty_class_option, "omitpenalty"); + // lua_set_string_by_index(L, open_fence_class_option, "openfence"); + // lua_set_string_by_index(L, close_fence_class_option, "closefence"); + // lua_set_string_by_index(L, middle_fence_class_option, "middlefence"); + lua_set_string_by_index(L, unpack_class_option, "unpack"); + lua_set_string_by_index(L, raise_prime_option, "raiseprime"); + lua_set_string_by_index(L, carry_over_left_top_kern_class_option, "carryoverlefttopkern"); + lua_set_string_by_index(L, carry_over_left_bottom_kern_class_option, "carryoverleftbottomkern"); + lua_set_string_by_index(L, carry_over_right_top_kern_class_option, "carryoverrighttopkern"); + lua_set_string_by_index(L, carry_over_right_bottom_kern_class_option, "carryoverrightbottomkern"); + lua_set_string_by_index(L, prefer_delimiter_dimensions_class_option, "preferdelimiterdimensions"); + lua_set_string_by_index(L, auto_inject_class_option, "autoinject"); + lua_set_string_by_index(L, remove_italic_correction_class_option, "removeitaliccorrection"); + return 1; +} + +static int texlib_getnormalizelinevalues(lua_State *L) +{ + lua_createtable(L, 2, 7); + lua_set_string_by_index(L, normalize_line_mode, "normalizeline"); + lua_set_string_by_index(L, parindent_skip_mode, "parindentskip"); + lua_set_string_by_index(L, swap_hangindent_mode, "swaphangindent"); + lua_set_string_by_index(L, swap_parshape_mode, "swapparshape"); + lua_set_string_by_index(L, break_after_dir_mode, "breakafterdir"); + lua_set_string_by_index(L, remove_margin_kerns_mode, "removemarginkerns"); + lua_set_string_by_index(L, clip_width_mode, "clipwidth"); + lua_set_string_by_index(L, flatten_discretionaries_mode, "flattendiscretionaries"); + lua_set_string_by_index(L, discard_zero_tab_skips_mode, "discardzerotabskips"); + lua_set_string_by_index(L, flatten_h_leaders_mode, "flattenhleaders"); + return 1; +} + +static int texlib_getnormalizeparvalues(lua_State *L) +{ + lua_createtable(L, 2, 0); + lua_set_string_by_index(L, normalize_par_mode, "normalizepar"); + lua_set_string_by_index(L, flatten_v_leaders_mode, "flattenvleaders"); + return 1; +} + +static int texlib_geterrorvalues(lua_State *L) +{ + lua_createtable(L, 7, 1); + lua_set_string_by_index(L, normal_error_type, "normal"); + lua_set_string_by_index(L, back_error_type, "back"); + lua_set_string_by_index(L, insert_error_type, "insert"); + lua_set_string_by_index(L, succumb_error_type, "succumb"); + lua_set_string_by_index(L, eof_error_type, "eof"); + lua_set_string_by_index(L, condition_error_type,"condition"); + lua_set_string_by_index(L, runaway_error_type, "runaway"); + lua_set_string_by_index(L, warning_error_type, "warning"); + return 1; +} + +static int texlib_getiovalues(lua_State *L) /* for reporting so we keep spaces */ +{ + lua_createtable(L, 5, 1); + lua_set_string_by_index(L, io_initial_input_code, "initial"); + lua_set_string_by_index(L, io_lua_input_code, "lua print"); + lua_set_string_by_index(L, io_token_input_code, "scan token"); + lua_set_string_by_index(L, io_token_eof_input_code, "scan token eof"); + lua_set_string_by_index(L, io_tex_macro_code, "tex macro"); + lua_set_string_by_index(L, io_file_input_code, "file"); + return 1; +} + +static int texlib_getfrozenparvalues(lua_State *L) +{ + lua_createtable(L, 2, 20); + lua_set_string_by_index(L, par_hsize_category, "hsize"); + lua_set_string_by_index(L, par_skip_category, "skip"); + lua_set_string_by_index(L, par_hang_category, "hang"); + lua_set_string_by_index(L, par_indent_category, "indent"); + lua_set_string_by_index(L, par_par_fill_category, "parfill"); + lua_set_string_by_index(L, par_adjust_category, "adjust"); + lua_set_string_by_index(L, par_protrude_category, "protrude"); + lua_set_string_by_index(L, par_tolerance_category, "tolerance"); + lua_set_string_by_index(L, par_stretch_category, "stretch"); + lua_set_string_by_index(L, par_looseness_category, "looseness"); + lua_set_string_by_index(L, par_last_line_category, "lastline"); + lua_set_string_by_index(L, par_line_penalty_category, "linepenalty"); + lua_set_string_by_index(L, par_club_penalty_category, "clubpenalty"); + lua_set_string_by_index(L, par_widow_penalty_category, "widowpenalty"); + lua_set_string_by_index(L, par_display_penalty_category, "displaypenalty"); + lua_set_string_by_index(L, par_broken_penalty_category, "brokenpenalty"); + lua_set_string_by_index(L, par_demerits_category, "demerits"); + lua_set_string_by_index(L, par_shape_category, "shape"); + lua_set_string_by_index(L, par_line_category, "line"); + lua_set_string_by_index(L, par_hyphenation_category, "hyphenation"); + lua_set_string_by_index(L, par_shaping_penalty_category, "shapingpenalty"); + lua_set_string_by_index(L, par_orphan_penalty_category, "orphanpenalty"); + /* lua_set_string_by_index(L, par_all_category, "all"); */ + return 1; +} + +static int texlib_getshapingpenaltiesvalues(lua_State *L) +{ + lua_createtable(L, 2, 2); + lua_push_key_at_index(L, interlinepenalty, inter_line_penalty_shaping); + lua_push_key_at_index(L, widowpenalty, widow_penalty_shaping); + lua_push_key_at_index(L, clubpenalty, club_penalty_shaping); + lua_push_key_at_index(L, brokenpenalty, broken_penalty_shaping); + return 1; +} + + +static int texlib_getprimitiveorigins(lua_State *L) +{ + lua_createtable(L, 2, 1); + lua_push_key_at_index(L, tex, tex_command); + lua_push_key_at_index(L, etex, etex_command); + lua_push_key_at_index(L, luatex, luatex_command); + return 1; +} + +static int texlib_getlargestusedmark(lua_State* L) +{ + lua_pushinteger(L, lmt_mark_state.mark_data.ptr); + return 1; +} + +static int texlib_getoutputactive(lua_State* L) +{ + lua_pushboolean(L, lmt_page_builder_state.output_active); + return 1; +} + +/*tex Moved from lmtnodelib to here. */ + +int lmt_push_info_keys(lua_State *L, value_info *values) +{ + lua_newtable(L); + for (int i = 0; values[i].name; i++) { + lua_rawgeti(L, LUA_REGISTRYINDEX, values[i].lua); + lua_rawseti(L, -2, i); + } + return 1; +} + +int lmt_push_info_values(lua_State *L, value_info *values) +{ + lua_newtable(L); + for (int i = 0; values[i].name; i++) { + lua_rawgeti(L, LUA_REGISTRYINDEX, values[i].lua); + lua_rawseti(L, -2, values[i].value); + } + return 1; +} + +static int texlib_getgroupvalues(lua_State *L) +{ + return lmt_push_info_values(L, lmt_interface.group_code_values); +} + +static int texlib_getmathparametervalues(lua_State *L) +{ + return lmt_push_info_keys(L, lmt_interface.math_parameter_values); +} + +static int texlib_getmathstylevalues(lua_State* L) +{ + return lmt_push_info_values(L, lmt_interface.math_style_values); +} + +static int texlib_getpacktypevalues(lua_State *L) +{ + return lmt_push_info_values(L, lmt_interface.pack_type_values); +} + +static int texlib_getparcontextvalues(lua_State *L) +{ + return lmt_push_info_values(L, lmt_interface.par_context_values); +} + +static int texlib_getpagecontextvalues(lua_State *L) +{ + return lmt_push_info_values(L, lmt_interface.page_context_values); +} + +static int texlib_getappendlinecontextvalues(lua_State *L) +{ + return lmt_push_info_values(L, lmt_interface.append_line_context_values); +} + +static int texlib_getalignmentcontextvalues(lua_State *L) +{ + return lmt_push_info_values(L, lmt_interface.alignment_context_values); +} + +static int texlib_getparbeginvalues(lua_State *L) +{ + return lmt_push_info_values(L, lmt_interface.par_begin_values); +} + +static int texlib_getparmodevalues(lua_State *L) +{ + return lmt_push_info_values(L, lmt_interface.par_mode_values); +} + +static int texlib_getmathstylenamevalues(lua_State *L) +{ + return lmt_push_info_values(L, lmt_interface.math_style_name_values); +} + +static int texlib_getmathvariantvalues(lua_State *L) +{ + return lmt_push_info_values(L, lmt_interface.math_style_variant_values); +} + +// static int texlib_getmathflattenvalues(lua_State *L) +// { +// lua_createtable(L, 2, 3); +// lua_set_string_by_index(L, math_flatten_ordinary, "ord"); +// lua_set_string_by_index(L, math_flatten_binary, "bin"); +// lua_set_string_by_index(L, math_flatten_relation, "rel"); +// lua_set_string_by_index(L, math_flatten_punctuation, "punct"); +// lua_set_string_by_index(L, math_flatten_inner, "inner"); +// return 1; +// } + +static int texlib_getdiscstatevalues(lua_State *L) +{ + lua_createtable(L, 4, 1); + lua_set_string_by_index(L, glyph_discpart_unset, "unset"); + lua_set_string_by_index(L, glyph_discpart_pre, "pre"); + lua_set_string_by_index(L, glyph_discpart_post, "post"); + lua_set_string_by_index(L, glyph_discpart_replace, "replace"); + lua_set_string_by_index(L, glyph_discpart_always, "always"); + return 1; +} + +static int texlib_getmathcontrolvalues(lua_State *L) +{ + lua_createtable(L, 2, 19); + lua_set_string_by_index(L, math_control_use_font_control, "usefontcontrol"); + lua_set_string_by_index(L, math_control_over_rule, "overrule"); + lua_set_string_by_index(L, math_control_under_rule, "underrule"); + lua_set_string_by_index(L, math_control_radical_rule, "radicalrule"); + lua_set_string_by_index(L, math_control_fraction_rule, "fractionrule"); + lua_set_string_by_index(L, math_control_accent_skew_half, "accentskewhalf"); + lua_set_string_by_index(L, math_control_accent_skew_apply, "accentskewapply"); + lua_set_string_by_index(L, math_control_apply_ordinary_kern_pair, "applyordinarykernpair"); + lua_set_string_by_index(L, math_control_apply_vertical_italic_kern, "applyverticalitalickern"); + lua_set_string_by_index(L, math_control_apply_ordinary_italic_kern, "applyordinaryitalickern"); + lua_set_string_by_index(L, math_control_apply_char_italic_kern, "applycharitalickern"); + lua_set_string_by_index(L, math_control_rebox_char_italic_kern, "reboxcharitalickern"); + lua_set_string_by_index(L, math_control_apply_boxed_italic_kern, "applyboxeditalickern"); + lua_set_string_by_index(L, math_control_staircase_kern, "staircasekern"); + lua_set_string_by_index(L, math_control_apply_text_italic_kern, "applytextitalickern"); + lua_set_string_by_index(L, math_control_check_text_italic_kern, "checktextitalickern"); + lua_set_string_by_index(L, math_control_check_space_italic_kern, "checkspaceitalickern"); + lua_set_string_by_index(L, math_control_apply_script_italic_kern, "applyscriptitalickern"); + lua_set_string_by_index(L, math_control_analyze_script_nucleus_char, "analyzescriptnucleuschar"); + lua_set_string_by_index(L, math_control_analyze_script_nucleus_list, "analyzescriptnucleuslist"); + lua_set_string_by_index(L, math_control_analyze_script_nucleus_box, "analyzescriptnucleusbox"); + return 1; +} + +static int texlib_gettextcontrolvalues(lua_State *L) +{ + lua_createtable(L, 1, 0); + lua_set_string_by_index(L, text_control_collapse_hyphens, "collapsehyphens"); + return 1; +} + +/* relatively new */ + +static int texlib_getinsertdistance(lua_State *L) +{ + return texlib_aux_push_glue(L, tex_get_insert_distance(lmt_tointeger(L, 1))); +} + +static int texlib_getinsertmultiplier(lua_State *L) +{ + lua_pushinteger(L, tex_get_insert_multiplier(lmt_tointeger(L, 1))); + return 1; +} + +static int texlib_getinsertlimit(lua_State *L) +{ + tex_set_insert_limit(lmt_tointeger(L, 1), lmt_opthalfword(L, 2, 0)); + return 0; +} + +static int texlib_setinsertdistance(lua_State *L) +{ + tex_set_insert_distance(lmt_tointeger(L, 1), texlib_aux_make_glue(L, lua_gettop(L), 2)); + return 0; +} + +static int texlib_setinsertmultiplier(lua_State *L) +{ + tex_set_insert_multiplier(lmt_tointeger(L, 1), lmt_tohalfword(L, 2)); + return 0; +} + +static int texlib_setinsertlimit(lua_State *L) +{ + lua_pushinteger(L, tex_get_insert_limit(lmt_tointeger(L, 1))); + return 1; +} + +static int texlib_getinsertheight(lua_State *L) +{ + lua_pushinteger(L, tex_get_insert_height(lmt_tointeger(L, 1))); + return 1; +} + +static int texlib_getinsertdepth(lua_State *L) +{ + lua_pushinteger(L, tex_get_insert_depth(lmt_tointeger(L, 1))); + return 1; +} + +static int texlib_getinsertwidth(lua_State *L) +{ + lua_pushinteger(L, tex_get_insert_width(lmt_tointeger(L, 1))); + return 1; +} + +static int texlib_getinsertcontent(lua_State *L) +{ + halfword index = lmt_tointeger(L, 1); + lmt_node_list_to_lua(L, tex_get_insert_content(index)); + tex_set_insert_content(index, null); + return 1; +} + +static int texlib_setinsertcontent(lua_State *L) +{ + halfword index = lmt_tointeger(L, 1); + tex_flush_node(tex_get_insert_content(index)); + tex_set_insert_content(index, lmt_node_list_from_lua(L, 2)); + return 0; +} + +static int texlib_getlocalbox(lua_State *L) +{ + int location = lmt_tointeger(L, 1); + if (is_valid_local_box_code(location)) { + lmt_node_list_to_lua(L, tex_get_local_boxes(location)); + } else { + lua_pushnil(L); + } + return 1; +} + +static int texlib_setlocalbox(lua_State *L) +{ + int location = lmt_tointeger(L, 1); + if (is_valid_local_box_code(location)) { + tex_set_local_boxes(lmt_node_list_from_lua(L, 1), location); + } + return 0; +} + +static int texlib_pushsavelevel(lua_State *L) +{ + (void) L; + tex_new_save_level(lua_group); + return 0; +} + +static int texlib_popsavelevel(lua_State *L) +{ + (void) L; + // tex_off_save(); + tex_unsave(); + return 0; +} + +/*tex + When testing all these math finetuning options we needed to typeset the box contents and + instead of filtering from the log or piping the log to a file, this more ssd friendly + feature was added. The first argument is a box (id) and the second an optional detail + directive. This is (currently) the only case where we write to a \LUA\ buffer, but I + might add variants for a macro and tokenlist at some point (less interesting). +*/ + +/* till here */ + +static const struct luaL_Reg texlib_function_list[] = { + { "write", texlib_write }, + { "print", texlib_print }, + { "sprint", texlib_sprint }, + { "mprint", texlib_mprint }, + { "tprint", texlib_tprint }, + { "cprint", texlib_cprint }, + { "isprintable", texlib_isprintable }, + { "pushlocal", texlib_pushlocal }, + { "poplocal", texlib_poplocal }, + { "runlocal", texlib_runlocal }, + { "runstring", texlib_runstring }, + { "quitlocal", texlib_quitlocal }, + { "expandasvalue", texlib_expandasvalue }, /* experiment */ + { "error", texlib_error }, + { "set", texlib_set }, + { "get", texlib_get }, + { "getregisterindex", texlib_get_register_index }, + { "isdimen", texlib_isdimen }, + { "setdimen", texlib_setdimen }, + { "getdimen", texlib_getdimen }, + { "isskip", texlib_isskip }, + { "setskip", texlib_setskip }, + { "getskip", texlib_getskip }, + { "isglue", texlib_isglue }, + { "setglue", texlib_setglue }, + { "getglue", texlib_getglue }, + { "ismuskip", texlib_ismuskip }, + { "setmuskip", texlib_setmuskip }, + { "getmuskip", texlib_getmuskip }, + { "ismuglue", texlib_ismuglue }, + { "setmuglue", texlib_setmuglue }, + { "getmuglue", texlib_getmuglue }, + { "isattribute", texlib_isattribute }, + { "setattribute", texlib_setattribute }, + { "getattribute", texlib_getattribute }, + { "iscount", texlib_iscount }, + { "setcount", texlib_setcount }, + { "getcount", texlib_getcount }, + { "istoks", texlib_istoks }, + { "settoks", texlib_settoks }, + { "scantoks", texlib_scantoks }, + { "gettoks", texlib_gettoks }, + { "getmark", texlib_getmark }, + { "isbox", texlib_isbox }, + { "setbox", texlib_setbox }, + { "getbox", texlib_getbox }, + { "splitbox", texlib_splitbox }, + { "setlist", texlib_setlist }, + { "getlist", texlib_getlist }, + { "setnest", texlib_setnest }, /* only a message */ + { "getnest", texlib_getnest }, + { "setcatcode", texlib_setcatcode }, + { "getcatcode", texlib_getcatcode }, + { "setdelcode", texlib_setdelcode }, + { "getdelcode", texlib_getdelcode }, + { "getdelcodes", texlib_getdelcodes }, + { "sethccode", texlib_sethccode }, + { "gethccode", texlib_gethccode }, + { "sethmcode", texlib_sethmcode }, + { "gethmcode", texlib_gethmcode }, + { "setlccode", texlib_setlccode }, + { "getlccode", texlib_getlccode }, + { "setmathcode", texlib_setmathcode }, + { "getmathcode", texlib_getmathcode }, + { "getmathcodes", texlib_getmathcodes }, + { "setsfcode", texlib_setsfcode }, + { "getsfcode", texlib_getsfcode }, + { "setuccode", texlib_setuccode }, + { "getuccode", texlib_getuccode }, + { "round", texlib_round }, + { "scale", texlib_scale }, + { "sp", texlib_toscaled }, + { "toscaled", texlib_toscaled }, + { "tonumber", texlib_tonumber }, + { "fontname", texlib_getfontname }, + { "fontidentifier", texlib_getfontidentifier }, + { "getfontoffamily", texlib_getfontoffamily }, + { "number", texlib_getnumber }, + // { "dimension", texlib_getdimension }, + { "romannumeral", texlib_getromannumeral }, + { "definefont", texlib_definefont }, + { "hashtokens", texlib_hashtokens }, + { "primitives", texlib_primitives }, + { "extraprimitives", texlib_extraprimitives }, + { "enableprimitives", texlib_enableprimitives }, + { "shipout", texlib_shipout }, + { "badness", texlib_badness }, + { "setmath", texlib_setmath }, + { "getmath", texlib_getmath }, + { "linebreak", texlib_linebreak }, + { "preparelinebreak", texlib_preparelinebreak }, + { "resetparagraph", texlib_resetparagraph }, + { "showcontext", texlib_showcontext }, + { "triggerbuildpage", texlib_triggerbuildpage }, + { "gethelptext", texlib_gethelptext }, + { "getpagestate", texlib_getpagestate }, + { "getlocallevel", texlib_getlocallevel }, + { "setinputstatemode", texlib_setinputstatemode }, + { "getinputstatemode", texlib_getinputstatemode }, + { "setinputstatefile", texlib_setinputstatefile }, + { "getinputstatefile", texlib_getinputstatefile }, + { "forceinputstatefile", texlib_forceinputstatefile }, + { "forceinputstateline", texlib_forceinputstateline }, + { "setinputstateline", texlib_setinputstateline }, + { "getinputstateline", texlib_getinputstateline }, + { "forcehmode", texlib_forcehmode }, + { "gettextdir", texlib_gettextdir }, + { "settextdir", texlib_settextdir }, + { "getlinedir", texlib_gettextdir }, /* we're nice */ + { "setlinedir", texlib_setlinedir }, + { "getmathdir", texlib_getmathdir }, + { "setmathdir", texlib_setmathdir }, + { "getpardir", texlib_getpardir }, + { "setpardir", texlib_setpardir }, + { "getboxdir", texlib_getboxdir }, + { "setboxdir", texlib_setboxdir }, + { "getinteraction", texlib_getinteraction }, + { "setinteraction", texlib_setinteraction }, + { "getglyphdata", texlib_getglyphdata }, + { "setglyphdata", texlib_setglyphdata }, + { "getglyphstate", texlib_getglyphstate }, + { "setglyphstate", texlib_setglyphstate }, + { "getglyphscript", texlib_getglyphscript }, + { "setglyphscript", texlib_setglyphscript }, + { "getglyphscales", texlib_getglyphscales }, + { "fatalerror", texlib_fatalerror }, + { "lastnodetype", texlib_lastnodetype }, + { "chardef", texlib_chardef }, + { "mathchardef", texlib_mathchardef }, + { "integerdef", texlib_setintegervalue }, + { "setintegervalue", texlib_setintegervalue }, + { "getintegervalue", texlib_getintegervalue }, + { "dimensiondef", texlib_setdimensionvalue }, + { "setdimensionvalue", texlib_setdimensionvalue }, + { "getdimensionvalue", texlib_getdimensionvalue }, + { "getmode", texlib_getmode }, + { "getmodevalues", texlib_getmodevalues }, + { "getrunstatevalues", texlib_getrunstatevalues }, + { "setrunstate", texlib_setrunstate }, + { "gethyphenationvalues", texlib_gethyphenationvalues }, + { "getglyphoptionvalues", texlib_getglyphoptionvalues }, + { "getnoadoptionvalues", texlib_getnoadoptionvalues }, + { "getdiscoptionvalues", texlib_getdiscoptionvalues }, + { "getlistanchorvalues", texlib_getlistanchorvalues }, + { "getlistsignvalues", texlib_getlistsignvalues }, + { "getlistgeometryvalues", texlib_getlistgeometryalues }, + { "getdiscstatevalues", texlib_getdiscstatevalues }, + { "getmathparametervalues", texlib_getmathparametervalues }, + { "getmathstylenamevalues", texlib_getmathstylenamevalues }, + { "getmathstylevalues", texlib_getmathstylevalues }, + { "getmathvariantvalues", texlib_getmathvariantvalues }, + /* {"getmathflattenvalues", texlib_getmathflattenvalues }, */ + { "getmathcontrolvalues", texlib_getmathcontrolvalues }, + { "gettextcontrolvalues", texlib_gettextcontrolvalues }, + { "getpacktypevalues", texlib_getpacktypevalues }, + { "getgroupvalues", texlib_getgroupvalues }, + { "getparcontextvalues", texlib_getparcontextvalues }, + { "getpagecontextvalues", texlib_getpagecontextvalues }, + { "getappendlinecontextvalues", texlib_getappendlinecontextvalues }, + { "getalignmentcontextvalues", texlib_getalignmentcontextvalues }, + { "getparbeginvalues", texlib_getparbeginvalues }, + { "getparmodevalues", texlib_getparmodevalues }, + { "getautomigrationvalues", texlib_getautomigrationvalues }, + { "getflagvalues", texlib_getflagvalues }, + { "getmathclassoptionvalues", texlib_getmathclassoptionvalues }, + { "getnormalizelinevalues", texlib_getnormalizelinevalues }, + { "getnormalizeparvalues", texlib_getnormalizeparvalues }, + { "geterrorvalues", texlib_geterrorvalues }, + { "getiovalues", texlib_getiovalues }, + { "getprimitiveorigins", texlib_getprimitiveorigins }, + { "getfrozenparvalues", texlib_getfrozenparvalues }, + { "getshapingpenaltiesvalues", texlib_getshapingpenaltiesvalues }, + { "getspecialmathclassvalues", texlib_getspecialmathclassvalues }, + { "getlargestusedmark", texlib_getlargestusedmark }, + { "getoutputactive", texlib_getoutputactive }, + /* experiment (metafun update) */ + { "shiftparshape", texlib_shiftparshape }, + { "snapshotpar", texlib_snapshotpar }, + { "getparstate", texlib_getparstate }, + /* */ + { "getinsertdistance", texlib_getinsertdistance }, + { "getinsertmultiplier", texlib_getinsertmultiplier }, + { "getinsertlimit", texlib_getinsertlimit }, + { "getinsertheight", texlib_getinsertheight }, + { "getinsertdepth", texlib_getinsertdepth }, + { "getinsertwidth", texlib_getinsertwidth }, + { "getinsertcontent", texlib_getinsertcontent }, + { "setinsertdistance", texlib_setinsertdistance }, + { "setinsertmultiplier", texlib_setinsertmultiplier }, + { "setinsertlimit", texlib_setinsertlimit }, + { "setinsertcontent", texlib_setinsertcontent }, + { "getlocalbox", texlib_getlocalbox }, + { "setlocalbox", texlib_setlocalbox }, + /* */ + { "pushsavelevel", texlib_pushsavelevel }, + { "popsavelevel", texlib_popsavelevel }, + /* */ + { NULL, NULL }, +}; + +# define defineindexers(name) \ + static int texlib_index_##name (lua_State *L) { lua_remove(L, 1); return texlib_get##name(L); } \ + static int texlib_newindex_##name(lua_State *L) { lua_remove(L, 1); return texlib_set##name(L); } + +defineindexers(attribute) +defineindexers(skip) +defineindexers(glue) +defineindexers(muskip) +defineindexers(muglue) +defineindexers(dimen) +defineindexers(count) +defineindexers(toks) +defineindexers(box) +defineindexers(sfcode) +defineindexers(lccode) +defineindexers(uccode) +defineindexers(hccode) +defineindexers(hmcode) +defineindexers(catcode) +defineindexers(mathcode) +defineindexers(delcode) +defineindexers(list) +defineindexers(nest) + +/*tex + At some point the |__index| and |__newindex |below will go away so that we no longer get + interferences when we extedn the |tex| table. +*/ + +int luaopen_tex(lua_State *L) +{ + texlib_aux_initialize(); + /* */ + lua_newtable(L); + luaL_setfuncs(L, texlib_function_list, 0); + lmt_make_table(L, "attribute", TEX_METATABLE_ATTRIBUTE, texlib_index_attribute, texlib_newindex_attribute); + lmt_make_table(L, "skip", TEX_METATABLE_SKIP, texlib_index_skip, texlib_newindex_skip); + lmt_make_table(L, "glue", TEX_METATABLE_GLUE, texlib_index_glue, texlib_newindex_glue); + lmt_make_table(L, "muskip", TEX_METATABLE_MUSKIP, texlib_index_muskip, texlib_newindex_muskip); + lmt_make_table(L, "muglue", TEX_METATABLE_MUGLUE, texlib_index_muglue, texlib_newindex_muglue); + lmt_make_table(L, "dimen", TEX_METATABLE_DIMEN, texlib_index_dimen, texlib_newindex_dimen); + lmt_make_table(L, "count", TEX_METATABLE_COUNT, texlib_index_count, texlib_newindex_count); + lmt_make_table(L, "toks", TEX_METATABLE_TOKS, texlib_index_toks, texlib_newindex_toks); + lmt_make_table(L, "box", TEX_METATABLE_BOX, texlib_index_box, texlib_newindex_box); + lmt_make_table(L, "sfcode", TEX_METATABLE_SFCODE, texlib_index_sfcode, texlib_newindex_sfcode); + lmt_make_table(L, "lccode", TEX_METATABLE_LCCODE, texlib_index_lccode, texlib_newindex_lccode); + lmt_make_table(L, "uccode", TEX_METATABLE_UCCODE, texlib_index_uccode, texlib_newindex_uccode); + lmt_make_table(L, "hccode", TEX_METATABLE_HCCODE, texlib_index_hccode, texlib_newindex_hccode); + lmt_make_table(L, "hmcode", TEX_METATABLE_HMCODE, texlib_index_hmcode, texlib_newindex_hmcode); + lmt_make_table(L, "catcode", TEX_METATABLE_CATCODE, texlib_index_catcode, texlib_newindex_catcode); + lmt_make_table(L, "mathcode", TEX_METATABLE_MATHCODE, texlib_index_mathcode, texlib_newindex_mathcode); + lmt_make_table(L, "delcode", TEX_METATABLE_DELCODE, texlib_index_delcode, texlib_newindex_delcode); + lmt_make_table(L, "lists", TEX_METATABLE_LISTS, texlib_index_list, texlib_newindex_list); + lmt_make_table(L, "nest", TEX_METATABLE_NEST, texlib_index_nest, texlib_newindex_nest); + texlib_aux_init_nest_lib(L); + /*tex make the meta entries and fetch it back */ + luaL_newmetatable(L, TEX_METATABLE_TEX); + lua_pushstring(L, "__index"); + lua_pushcfunction(L, texlib_index); + lua_settable(L, -3); + lua_pushstring(L, "__newindex"); + lua_pushcfunction(L, texlib_newindex); + lua_settable(L, -3); + lua_setmetatable(L, -2); + return 1; +} |