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Diffstat (limited to 'source/luametatex/source/tex/texfileio.h')
| -rw-r--r-- | source/luametatex/source/tex/texfileio.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/source/luametatex/source/tex/texfileio.h b/source/luametatex/source/tex/texfileio.h new file mode 100644 index 000000000..1f7005342 --- /dev/null +++ b/source/luametatex/source/tex/texfileio.h @@ -0,0 +1,81 @@ +/* + See license.txt in the root of this project. +*/ + +# ifndef LMT_TEXFILEIO_H +# define LMT_TEXFILEIO_H + +# include "textypes.h" + +# define FOPEN_R_MODE "r" +# define FOPEN_W_MODE "wb" +# define FOPEN_RBIN_MODE "rb" +# define FOPEN_WBIN_MODE "wb" + +# define IS_SPC_OR_EOL(c) ((c) == ' ' || (c) == '\r' || (c) == '\n') + +extern void tex_initialize_fileio_state (void); +extern int tex_room_in_buffer (int top); +extern int tex_lua_a_open_in (const char *fn); +extern void tex_lua_a_close_in (void); +extern int tex_lua_input_ln (void); + +/*tex + + The user's terminal acts essentially like other files of text, except that it is used both for + input and for output. In traditional \TEX, when the terminal is considered an input file, the + file variable is called |term_in|, and when it is considered an output file the file variable + is |term_out|. + + However, in \LUATEX\ in addition to files we also have pseudo files (something \ETEX) and input + coming from \LUA, which makes for a much more complex system. In \LUAMETATEX\ the model has + been stepwise simplified: pseudo files are gone and use a mechanism simular to \LUA\ input, and + the terminal is left up to the (anyway kind of mandate) file related callbacks, with read file + id zero still being the console. Output to the console is part of a model that intercepts output + to the log file and/or the console and can delegate handling to callbacks as well. + + So, in the end, the terminal code in \LUAMETATEX\ is gone as all goes through \LUA, which also + means that |terminal_update|, |clear_terminal| and |wake_up_terminal| are no longer needed. + + It is important to notice that reading from files is split into two: the files explicitly opened + with |\openin| are managed independent from the files opened with |\input|. The first category + is not part of input file nesting management. + +*/ + +# define format_extension ".fmt" +# define transcript_extension ".log" +# define texinput_extension ".tex" + +typedef struct fileio_state_info { + unsigned char *io_buffer; /*tex lines of characters being read */ + memory_data io_buffer_data; + int io_first; /*tex the first unused position in |buffer| */ + int io_last; /*tex end of the line just input to |buffer| */ + int name_in_progress; /*tex Is a file name being scanned? */ + int log_opened; /*tex the transcript file has been opened */ + char *job_name; /*tex the principal file name */ + char *log_name; /*tex full name of the log file */ + char *fmt_name; +} fileio_state_info ; + +extern fileio_state_info lmt_fileio_state; + +# define emergency_job_name (lmt_fileio_state.job_name ? lmt_fileio_state.job_name : "unknown job name") +# define emergency_log_name (lmt_fileio_state.log_name ? lmt_fileio_state.log_name : "unknown log name") +# define emergency_fmt_name (lmt_fileio_state.fmt_name ? lmt_fileio_state.fmt_name : "unknown fmt name") + +extern void tex_terminal_update (void); +extern void tex_open_log_file (void); +extern void tex_close_log_file (void); +extern void tex_start_input (char *fn); +extern void tex_check_fmt_name (void); +extern void tex_check_job_name (char *fn); +extern dumpstream tex_open_fmt_file (int writemode); +extern void tex_close_fmt_file (dumpstream f); +extern char *tex_read_file_name (int optionalequal, const char * name, const char* ext); +extern void tex_print_file_name (unsigned char *name); +extern void tex_report_start_file (unsigned char *name); +extern void tex_report_stop_file (void); + +# endif |