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/* This file is generated by "mtxrun --script "mtx-wtoc.lua" from the metapost cweb files. */
# include "mpconfig.h"
# include "mpstrings.h"
# define STRCMP_RESULT(a) ((a) < 0 ? -1 : ((a) > 0 ? 1 : 0))
static int mp_aux_comp_strings_entry(void *p, const void *pa, const void *pb)
{
const mp_lstring *a = (const mp_lstring *) pa;
const mp_lstring *b = (const mp_lstring *) pb;
unsigned char *s = a->str;
unsigned char *t = b->str;
size_t l = a->len <= b->len ? a->len : b->len;
(void) p;
while (l-- > 0) {
if (*s != *t) {
return STRCMP_RESULT(*s - *t);
} else {
s++;
t++;
}
}
return STRCMP_RESULT((int)(a->len - b->len));
}
void *mp_aux_copy_strings_entry(const void *p)
{
mp_string ff = mp_memory_allocate(sizeof(mp_lstring));
if (ff) {
const mp_lstring *fp = (const mp_lstring *) p;
ff->str = mp_memory_allocate((size_t) fp->len + 1);
if (ff->str) {
memcpy((char *) ff->str, (char *) fp->str, fp->len + 1);
ff->len = fp->len;
ff->refs = 0;
return ff;
}
}
return NULL;
}
static void *delete_strings_entry(void *p)
{
mp_string ff = (mp_string) p;
mp_memory_free(ff->str);
mp_memory_free(ff);
return NULL;
}
static mp_string new_strings_entry(void)
{
mp_string ff = mp_memory_allocate(sizeof(mp_lstring));
ff->str = NULL;
ff->len = 0;
ff->refs = 0;
return ff;
}
char *mp_strdup(const char *s)
{
if (s) {
char *w = lmt_memory_strdup(s);
if (w) {
return w;
} else {
printf("mplib ran out of memory, case 3");
exit(EXIT_FAILURE);
}
}
return NULL;
}
char *mp_strndup(const char *p, size_t l)
{
if (p) {
char *r = mp_memory_allocate(l * sizeof(char) + 1);
if (r) {
char *s = memcpy(r, p, l);
*(s + l) = '\0';
return s;
} else {
printf("mplib ran out of memory, case 4");
exit(EXIT_FAILURE);
}
}
return NULL;
}
int mp_strcmp(const char *a, const char *b)
{
return a == NULL ? (b == NULL ? 0 : -1) : (b == NULL ? 1 : strcmp(a, b));
}
void mp_initialize_strings(MP mp)
{
mp->strings = avl_create(mp_aux_comp_strings_entry, mp_aux_copy_strings_entry, delete_strings_entry, mp_memory_allocate, mp_memory_free, NULL);
mp->cur_string = NULL;
mp->cur_length = 0;
mp->cur_string_size = 0;
}
void mp_dealloc_strings(MP mp)
{
if (mp->strings != NULL) {
avl_destroy(mp->strings);
} else {
mp->strings = NULL;
mp_memory_free(mp->cur_string);
mp->cur_string = NULL;
mp->cur_length = 0;
mp->cur_string_size = 0;
}
}
char *mp_str(MP mp, mp_string ss)
{
(void) mp;
return (char *) ss->str;
}
mp_string mp_rtsl(MP mp, const char *s, size_t l)
{
mp_string nstr;
mp_string str = new_strings_entry();
str->str = (unsigned char *) mp_strndup(s, l);
str->len = l;
nstr = (mp_string) avl_find(str, mp->strings);
if (nstr == NULL) {
avl_ins(str, mp->strings, avl_false);
nstr = (mp_string) avl_find(str, mp->strings);
}
delete_strings_entry(str);
add_str_ref(nstr);
return nstr;
}
mp_string mp_rts(MP mp, const char *s)
{
return mp_rtsl(mp, s, strlen(s));
}
# define EXTRA_STRING 500
void mp_str_room(MP mp, int wsize)
{
if ((mp->cur_length + (size_t) wsize + 1) > mp->cur_string_size) {
size_t nsize = mp->cur_string_size + mp->cur_string_size / 5 + EXTRA_STRING;
if (nsize < (size_t) wsize) {
nsize = (size_t) wsize + EXTRA_STRING;
}
mp->cur_string = (unsigned char *) mp_memory_reallocate(mp->cur_string, (size_t) nsize * sizeof(unsigned char));
memset(mp->cur_string + mp->cur_length, 0, nsize-mp->cur_length);
mp->cur_string_size = nsize;
}
}
void mp_append_char(MP mp, unsigned char c)
{
*(mp->cur_string + mp->cur_length) = c;
mp->cur_length++;
}
void mp_append_str(MP mp, const char *s)
{
int j = 0;
while ((unsigned char) s[j]) {
*(mp->cur_string + mp->cur_length) = s[j++];
mp->cur_length++;
}
}
void mp_reset_cur_string(MP mp)
{
mp_memory_free(mp->cur_string);
mp->cur_length = 0;
mp->cur_string_size = 63;
mp->cur_string = (unsigned char *) mp_memory_allocate(64 * sizeof(unsigned char));
memset(mp->cur_string, 0, 64);
}
void mp_flush_string(MP mp, mp_string s) {
if (s->refs == 0) {
mp->strs_in_use--;
mp->pool_in_use = mp->pool_in_use - (int) s->len;
avl_del(s, mp->strings, NULL);
}
}
mp_string mp_intern(MP mp, const char *s)
{
mp_string r = mp_rts(mp, s);
r->refs = MAX_STR_REF;
return r;
}
mp_string mp_make_string(MP mp)
{
mp_string str;
mp_lstring tmp;
tmp.str = mp->cur_string;
tmp.len = mp->cur_length;
str = (mp_string) avl_find(&tmp, mp->strings);
if (str == NULL) {
str = mp_memory_allocate(sizeof(mp_lstring));
str->str = mp->cur_string;
str->len = tmp.len;
avl_ins(str, mp->strings, avl_false);
str = (mp_string) avl_find(&tmp, mp->strings);
mp->pool_in_use = mp->pool_in_use + (int) str->len;
if (mp->pool_in_use > mp->max_pl_used) {
mp->max_pl_used = mp->pool_in_use;
}
mp->strs_in_use++;
if (mp->strs_in_use > mp->max_strs_used) {
mp->max_strs_used = mp->strs_in_use;
}
}
add_str_ref(str);
mp_reset_cur_string (mp);
return str;
}
int mp_str_vs_str(MP mp, mp_string s, mp_string t)
{
(void) mp;
return mp_aux_comp_strings_entry(NULL, (const void *) s, (const void *) t);
}
mp_string mp_cat(MP mp, mp_string a, mp_string b)
{
mp_string str;
size_t saved_cur_length = mp->cur_length;
unsigned char *saved_cur_string = mp->cur_string;
size_t saved_cur_string_size = mp->cur_string_size;
size_t needed = a->len + b->len;
mp->cur_length = 0;
mp->cur_string = (unsigned char *) mp_memory_allocate((size_t) (needed + 1) * sizeof(unsigned char));
mp->cur_string_size = 0;
mp_str_room(mp, (int) needed + 1);
memcpy(mp->cur_string, a->str, a->len);
memcpy(mp->cur_string + a->len, b->str, b->len);
mp->cur_length = needed;
mp->cur_string[needed] = '\0';
str = mp_make_string(mp);
mp_memory_free(mp->cur_string);
mp->cur_length = saved_cur_length;
mp->cur_string = saved_cur_string;
mp->cur_string_size = saved_cur_string_size;
return str;
}
mp_string mp_chop_string(MP mp, mp_string s, int a, int b)
{
int l = (int) s->len;
int reversed;
if (a <= b) {
reversed = 0;
} else {
int k = a;
a = b;
b = k;
reversed = 1;
}
if (a < 0) {
a = 0;
if (b < 0) {
b = 0;
}
}
if (b > l) {
b = l;
if (a > l) {
a = l;
}
}
mp_str_room(mp, (size_t) (b - a));
if (reversed) {
for (int k = b - 1; k >= a; k--) {
mp_append_char(mp, *(s->str + k));
}
} else {
for (int k = a; k < b; k++) {
mp_append_char(mp, *(s->str + k));
}
}
return mp_make_string(mp);
}
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