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more text allocation

This commit is contained in:
Vitor Santos Costa 2017-10-27 13:48:07 +01:00
parent afd24bb8db
commit 73f05f2ed2
2 changed files with 30 additions and 10 deletions
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36
C/c_interface.c
View File

@ -1355,7 +1355,9 @@ X_API void YAP_FreeSpaceFromYap(void *ptr) { Yap_FreeCodeSpace(ptr); }
*/ X_API char *
YAP_StringToBuffer(Term t, char *buf, unsigned int bufsize) {
CACHE_REGS
seq_tv_t inp, out;
BACKUP_MACHINE_REGS();
seq_tv_t inp, out;
int l = push_text_stack();
inp.val.t = t;
inp.type = YAP_STRING_ATOMS_CODES | YAP_STRING_STRING | YAP_STRING_ATOM |
YAP_STRING_TRUNC | YAP_STRING_MALLOC;
@ -1363,9 +1365,18 @@ YAP_StringToBuffer(Term t, char *buf, unsigned int bufsize) {
out.type = YAP_STRING_CHARS;
out.val.c = buf;
out.enc = ENC_ISO_UTF8;
if (!Yap_CVT_Text(&inp, &out PASS_REGS))
return NULL;
return out.val.c;
if (!Yap_CVT_Text(&inp, &out PASS_REGS)) {
pop_text_stack(l);
RECOVER_MACHINE_REGS();
return NULL;
} else {
RECOVER_MACHINE_REGS();
if (buf == out.val.c) {
return buf;
} else {
return pop_output_text_stack(l, out.val.c);
}
}
}
/* copy a string to a buffer */
@ -2220,17 +2231,26 @@ X_API char *YAP_WriteBuffer(Term t, char *buf, size_t sze, int flags) {
seq_tv_t inp, out;
BACKUP_MACHINE_REGS();
int l = push_text_stack();
inp.val.t = t;
inp.type = YAP_STRING_TERM|YAP_STRING_DATUM;
out.type = YAP_STRING_CHARS;
out.val.c = buf;
out.max = sze - 1;
out.enc = LOCAL_encoding;
if (!Yap_CVT_Text(&inp, &out PASS_REGS))
return NULL;
if (!Yap_CVT_Text(&inp, &out PASS_REGS)) {
RECOVER_MACHINE_REGS();
return out.val.c;
}
pop_text_stack(l);
return NULL;
} else {
RECOVER_MACHINE_REGS();
if (buf == out.val.c) {
return buf;
} else {
return pop_output_text_stack(l, out.val.c);
}
}}
/// write a a term to n user-provided buffer: make sure not tp
/// overflow the buffer even if the text is much larger.

4
C/text.c
View File

@ -84,7 +84,7 @@ void *pop_output_text_stack__(int i, void *export) {
while (p) {
struct mblock *np = p->next;
if (p + 1 == export) {
size_t sz = p->sz;
size_t sz = p->sz-sizeof(struct mblock) ;
memcpy(p, p + 1, sz);
export = p;
} else {
@ -641,7 +641,7 @@ void *write_buffer(unsigned char *s0, seq_tv_t *out USES_REGS) {
size_t leng = strlen((char *)s0);
size_t min = 0, max = leng;
if (out->enc == ENC_ISO_UTF8) {
if (true || out->val.uc == NULL) { // this should always be the case
if ( out->val.uc == NULL) { // this should always be the case
out->val.uc = BaseMalloc(leng + 1);
strcpy(out->val.c, (char *)s0);
} else if (out->val.uc != s0) {