1184 lines
31 KiB
Plaintext
1184 lines
31 KiB
Plaintext
/*************************************************************************
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* *
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* YAP Prolog *
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* *
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* Yap Prolog was developed at NCCUP - Universidade do Porto *
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* *
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* Copyright L.Damas, V. Santos Costa and Universidade do Porto 1985-- *
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* *
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**************************************************************************
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* *
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* File: strings.c *
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* comments: General-conversion of character sequences. *
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* *
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* Last rev: $Date: 2008-07-24 16:02:00 $,$Author: vsc $ *
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* *
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*************************************************************************/
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#include "Yap.h"
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#include "YapEval.h"
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#include "YapHeap.h"
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#include "YapText.h"
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#include "Yatom.h"
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#include "yapio.h"
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#include <YapText.h>
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#include <string.h>
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#include <wchar.h>
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#ifndef HAVE_WCSNLEN
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inline static size_t min_size(size_t i, size_t j) { return (i < j ? i : j); }
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#define wcsnlen(S, N) min_size(N, wcslen(S))
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#endif
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#ifndef NAN
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#define NAN (0.0 / 0.0)
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#endif
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#define MAX_PATHNAME 2048
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struct mblock {
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struct mblock *prev, *next;
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int lvl;
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size_t sz;
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};
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typedef struct TextBuffer_manager {
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void *buf, *ptr;
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size_t sz;
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struct mblock *first[16];
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struct mblock *last[16];
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int lvl;
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} text_buffer_t;
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int push_text_stack(USES_REGS1) {
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return LOCAL_TextBuffer->lvl++; }
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int pop_text_stack(int i) {
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int lvl = LOCAL_TextBuffer->lvl;
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while (lvl >= i) {
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struct mblock *p = LOCAL_TextBuffer->first[lvl];
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while (p) {
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struct mblock *np = p->next;
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free(p);
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p = np;
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}
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LOCAL_TextBuffer->first[lvl] = NULL;
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LOCAL_TextBuffer->last[lvl] = NULL;
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lvl--;
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}
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LOCAL_TextBuffer->lvl = i;
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return lvl;
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}
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void *protected_pop_text_stack(int i, void *protected, bool tmp,
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size_t sz USES_REGS) {
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void *out = protected;
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int lvl = LOCAL_TextBuffer->lvl;
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while (lvl > i) {
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struct mblock *p = LOCAL_TextBuffer->first[lvl];
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while (p) {
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struct mblock *np = p->next;
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if (p + 1 == protected) {
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if (tmp)
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out = LOCAL_FileNameBuf;
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else
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out = p;
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memcpy(out, protected, sz);
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} else {
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free(p);
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}
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p = np;
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}
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LOCAL_TextBuffer->first[lvl] = NULL;
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LOCAL_TextBuffer->last[lvl] = NULL;
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lvl--;
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}
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LOCAL_TextBuffer->lvl = lvl;
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return out;
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}
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// void pop_text_stack(int i) { LOCAL_TextBuffer->lvl = i; }
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void *Malloc(size_t sz USES_REGS) {
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int lvl = LOCAL_TextBuffer->lvl;
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if (sz == 0)
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sz = 1024;
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sz = ALIGN_BY_TYPE(sz + sizeof(struct mblock), CELL);
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struct mblock *o = malloc(sz);
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if (!o)
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return NULL;
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o->prev = LOCAL_TextBuffer->last[lvl];
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if (o->prev) {
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o->prev->next = o;
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}
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if (LOCAL_TextBuffer->first[lvl]) {
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LOCAL_TextBuffer->last[lvl] = o;
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} else {
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LOCAL_TextBuffer->first[lvl] = LOCAL_TextBuffer->last[lvl] = o;
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}
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o->next = NULL;
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o->sz = sz;
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o->lvl = lvl;
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return o + 1;
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}
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void *Realloc(void *pt, size_t sz USES_REGS) {
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sz = ALIGN_BY_TYPE(sz + sizeof(struct mblock), CELL);
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struct mblock *old = pt, *o;
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old--;
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int lvl = old->lvl;
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o = realloc(old, sz);
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if (o->prev)
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o->prev->next = o;
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if (o->next)
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o->next->prev = o;
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if (LOCAL_TextBuffer->first[lvl] == old) {
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LOCAL_TextBuffer->first[lvl] = o;
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}
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if (LOCAL_TextBuffer->last[lvl] == old) {
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LOCAL_TextBuffer->last[lvl] = o;
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}
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return o + 1;
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}
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void Free(void *pt USES_REGS) {
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struct mblock *o = pt;
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o--;
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if (o->prev)
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o->prev->next = o->next;
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if (o->next)
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o->next->prev = o->prev;
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int lvl = o->lvl;
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if (LOCAL_TextBuffer->first[lvl] == o) {
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if (LOCAL_TextBuffer->last[lvl] == o) {
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LOCAL_TextBuffer->first[lvl] = LOCAL_TextBuffer->last[lvl] = NULL;
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}
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LOCAL_TextBuffer->first[lvl] = o->next;
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} else if (LOCAL_TextBuffer->last[lvl] == o) {
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LOCAL_TextBuffer->last[lvl] = o->prev;
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}
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free(o);
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}
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void *Yap_InitTextAllocator(void) {
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struct TextBuffer_manager *new = calloc(sizeof(struct TextBuffer_manager), 1);
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return new;
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}
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static size_t MaxTmp(USES_REGS1) {
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return ((char *)LOCAL_TextBuffer->buf + LOCAL_TextBuffer->sz) -
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(char *)LOCAL_TextBuffer->ptr;
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}
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static Term Globalize(Term v USES_REGS) {
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if (!IsVarTerm(v = Deref(v))) {
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return v;
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}
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if (VarOfTerm(v) > HR && VarOfTerm(v) < LCL0) {
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Bind_Local(VarOfTerm(v), MkVarTerm());
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v = Deref(v);
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}
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return v;
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}
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static Int SkipListCodes(unsigned char **bufp, Term *l, Term **tailp,
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Int *atoms, bool *wide, seq_tv_t *inp USES_REGS) {
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Int length = 0;
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Term *s; /* slow */
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Term v; /* temporary */
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*wide = false;
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unsigned char *st0 = *bufp, *st;
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if (!st0) {
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st0 = Malloc(0);
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}
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do_derefa(v, l, derefa_unk, derefa_nonvar);
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*tailp = l;
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s = l;
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*bufp = st = st0;
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if (*l == TermNil) {
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st[0] = '\0';
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return 0;
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}
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if (IsPairTerm(*l)) {
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Term hd0 = HeadOfTerm(*l);
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if (IsVarTerm(hd0)) {
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return -INSTANTIATION_ERROR;
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}
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// are we looking for atoms/codes?
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// whatever the case, we should be consistent throughout,
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// so we should be consistent with the first arg.
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if (*atoms == 1) {
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if (!IsIntegerTerm(hd0)) {
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return -INSTANTIATION_ERROR;
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}
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} else if (*atoms == 2) {
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if (!IsAtomTerm(hd0)) {
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return -TYPE_ERROR_ATOM;
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}
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}
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do {
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int ch;
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length++;
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{
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Term hd = Deref(RepPair(*l)[0]);
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if (IsVarTerm(hd)) {
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return -INSTANTIATION_ERROR;
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} else if (IsAtomTerm(hd)) {
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(*atoms)++;
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if (*atoms < length) {
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*tailp = l;
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return -REPRESENTATION_ERROR_CHARACTER_CODE;
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} else {
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AtomEntry *ae = RepAtom(AtomOfTerm(hd));
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if ((ae->StrOfAE)[1] != '\0') {
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length = -REPRESENTATION_ERROR_CHARACTER;
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} else {
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ch = RepAtom(AtomOfTerm(hd))->StrOfAE[0];
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*wide |= ch > 0x80;
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}
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}
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} else if (IsIntegerTerm(hd)) {
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ch = IntegerOfTerm(hd);
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if (*atoms)
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length = -REPRESENTATION_ERROR_CHARACTER;
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else if (ch < 0) {
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*tailp = l;
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length = -REPRESENTATION_ERROR_CHARACTER_CODE;
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} else {
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*wide |= ch > 0x80;
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}
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} else {
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length = -TYPE_ERROR_INTEGER;
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}
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if (length < 0) {
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*tailp = l;
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return length;
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}
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}
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// now copy char to buffer
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int chsz = put_utf8(st, ch);
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if (chsz > 0) {
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st += chsz;
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}
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l = RepPair(*l) + 1;
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do_derefa(v, l, derefa2_unk, derefa2_nonvar);
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} while (*l != *s && IsPairTerm(*l));
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}
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if (IsVarTerm(*l)) {
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return -INSTANTIATION_ERROR;
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}
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if (*l != TermNil) {
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return -TYPE_ERROR_LIST;
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}
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st[0] = '\0';
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Malloc((st - st0) + 1);
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*tailp = l;
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return length;
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}
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static unsigned char *latin2utf8(seq_tv_t *inp, size_t *lengp) {
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unsigned char *b0 = inp->val.uc;
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size_t sz = *lengp = strlen(inp->val.c);
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sz *= 2;
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int ch;
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unsigned char *buf = Malloc(sz + 1), *pt = buf;
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*lengp = strlen(inp->val.c);
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if (!buf)
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return NULL;
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while ((ch = *b0++)) {
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int off = put_utf8(pt, ch);
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if (off < 0)
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continue;
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pt += off;
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}
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*pt++ = '\0';
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return buf;
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}
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static unsigned char *wchar2utf8(seq_tv_t *inp, size_t *lengp) {
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*lengp = wcslen(inp->val.w);
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size_t sz = *lengp * 4;
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wchar_t *b0 = inp->val.w;
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unsigned char *buf = Malloc(sz + 1), *pt = buf;
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int ch;
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if (!buf)
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return NULL;
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while ((ch = *b0++))
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pt += put_utf8(pt, ch);
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*pt++ = '\0';
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return buf;
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}
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static void *slice(size_t min, size_t max, unsigned char *buf USES_REGS);
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static unsigned char *to_buffer(unsigned char *buf, Term t, seq_tv_t *inp,
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bool *widep, Int *atoms,
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size_t *lenp USES_REGS) {
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CELL *r = NULL;
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Int n;
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if (!buf) {
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inp->max = *lenp;
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}
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unsigned char *bufc = buf;
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n = SkipListCodes(&bufc, &t, &r, atoms, widep, inp PASS_REGS);
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if (n < 0) {
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LOCAL_Error_TYPE = -n;
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return NULL;
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}
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*lenp = n;
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return bufc;
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}
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static unsigned char *Yap_ListOfCodesToBuffer(unsigned char *buf, Term t,
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seq_tv_t *inp, bool *widep,
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size_t *lenp USES_REGS) {
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Int atoms = 1; // we only want lists of atoms
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return to_buffer(buf, t, inp, widep, &atoms, lenp PASS_REGS);
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}
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static unsigned char *Yap_ListOfAtomsToBuffer(unsigned char *buf, Term t,
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seq_tv_t *inp, bool *widep,
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size_t *lenp USES_REGS) {
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Int atoms = 2; // we only want lists of integer codes
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return to_buffer(buf, t, inp, widep, &atoms, lenp PASS_REGS);
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}
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static unsigned char *Yap_ListToBuffer(unsigned char *buf, Term t,
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seq_tv_t *inp, bool *widep,
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size_t *lenp USES_REGS) {
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Int atoms = 0; // we accept both types of lists.
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return to_buffer(buf, t, inp, widep, &atoms, lenp PASS_REGS);
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}
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#if USE_GEN_TYPE_ERROR
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static yap_error_number gen_type_error(int flags) {
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if ((flags & (YAP_STRING_STRING | YAP_STRING_ATOM | YAP_STRING_INT |
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YAP_STRING_FLOAT | YAP_STRING_ATOMS_CODES | YAP_STRING_BIG)) ==
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(YAP_STRING_STRING | YAP_STRING_ATOM | YAP_STRING_INT | YAP_STRING_FLOAT |
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YAP_STRING_ATOMS_CODES | YAP_STRING_BIG))
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return TYPE_ERROR_TEXT;
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if ((flags & (YAP_STRING_STRING | YAP_STRING_ATOM | YAP_STRING_INT |
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YAP_STRING_FLOAT | YAP_STRING_BIG)) ==
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(YAP_STRING_STRING | YAP_STRING_ATOM | YAP_STRING_INT | YAP_STRING_FLOAT |
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YAP_STRING_BIG))
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return TYPE_ERROR_ATOMIC;
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if ((flags & (YAP_STRING_INT | YAP_STRING_FLOAT | YAP_STRING_BIG)) ==
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(YAP_STRING_INT | YAP_STRING_FLOAT | YAP_STRING_BIG))
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return TYPE_ERROR_NUMBER;
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if (flags & YAP_STRING_ATOM)
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return TYPE_ERROR_ATOM;
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if (flags & YAP_STRING_STRING)
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return TYPE_ERROR_STRING;
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if (flags & (YAP_STRING_CODES | YAP_STRING_ATOMS))
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return TYPE_ERROR_LIST;
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return TYPE_ERROR_NUMBER;
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}
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#endif
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// static int cnt;
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unsigned char *Yap_readText(seq_tv_t *inp, size_t *lengp) {
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unsigned char *s0 = NULL;
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bool wide;
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if (LOCAL_Error_TYPE != YAP_NO_ERROR) {
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fprintf(stderr, "Sourious error %u\n", LOCAL_Error_TYPE);
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LOCAL_Error_TYPE = YAP_NO_ERROR;
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}
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/* we know what the term is */
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if (!(inp->type & (YAP_STRING_CHARS | YAP_STRING_WCHARS))) {
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if (!(inp->type & YAP_STRING_TERM)) {
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if (IsVarTerm(inp->val.t)) {
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LOCAL_Error_TYPE = INSTANTIATION_ERROR;
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} else if (!IsAtomTerm(inp->val.t) && inp->type == YAP_STRING_ATOM) {
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LOCAL_Error_TYPE = TYPE_ERROR_ATOM;
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} else if (!IsStringTerm(inp->val.t) && inp->type == YAP_STRING_STRING) {
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LOCAL_Error_TYPE = TYPE_ERROR_STRING;
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} else if (!IsPairOrNilTerm(inp->val.t) && !IsStringTerm(inp->val.t) &&
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inp->type == (YAP_STRING_ATOMS_CODES | YAP_STRING_STRING)) {
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LOCAL_Error_TYPE = TYPE_ERROR_LIST;
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} else if (!IsNumTerm(inp->val.t) &&
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(inp->type & (YAP_STRING_INT | YAP_STRING_FLOAT |
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YAP_STRING_BIG)) == inp->type) {
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LOCAL_Error_TYPE = TYPE_ERROR_NUMBER;
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}
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}
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}
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if (LOCAL_Error_TYPE != YAP_NO_ERROR)
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return NULL;
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if (IsAtomTerm(inp->val.t) && inp->type & YAP_STRING_ATOM) {
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// this is a term, extract to a buffer, and representation is wide
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// Yap_DebugPlWriteln(inp->val.t);
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Atom at = AtomOfTerm(inp->val.t);
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size_t sz = strlen(at->StrOfAE);
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if (lengp)
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*lengp = sz;
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if (inp->type & YAP_STRING_WITH_BUFFER)
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return at->UStrOfAE;
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inp->type |= YAP_STRING_IN_TMP;
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char *o = Malloc(sz+1);
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strcpy(o, at->StrOfAE);
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return (unsigned char *)o;
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}
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if (IsStringTerm(inp->val.t) && inp->type & YAP_STRING_STRING) {
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// this is a term, extract to a buffer, and representation is wide
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// Yap_DebugPlWriteln(inp->val.t);
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const char *s = StringOfTerm(inp->val.t);
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size_t sz = strlen( s );
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if (lengp)
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*lengp = sz;
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if (inp->type & YAP_STRING_WITH_BUFFER)
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return (unsigned char *)UStringOfTerm(inp->val.t);
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inp->type |= YAP_STRING_IN_TMP;
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char *o = Malloc(sz+1);
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strcpy(o, s);
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return (unsigned char *)o;
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}
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if (((inp->type & (YAP_STRING_CODES | YAP_STRING_ATOMS)) ==
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(YAP_STRING_CODES | YAP_STRING_ATOMS)) &&
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IsPairOrNilTerm(inp->val.t)) {
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// Yap_DebugPlWriteln(inp->val.t);
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return Yap_ListToBuffer(s0, inp->val.t, inp, &wide, lengp PASS_REGS);
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// this is a term, extract to a sfer, and representation is wide
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}
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if (inp->type & YAP_STRING_CODES && IsPairOrNilTerm(inp->val.t)) {
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// Yap_DebugPlWriteln(inp->val.t);
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return Yap_ListOfCodesToBuffer(s0, inp->val.t, inp, &wide, lengp PASS_REGS);
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// this is a term, extract to a sfer, and representation is wide
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}
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if (inp->type & YAP_STRING_ATOMS && IsPairOrNilTerm(inp->val.t)) {
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// Yap_DebugPlWriteln(inp->val.t);
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return Yap_ListOfAtomsToBuffer(s0, inp->val.t, inp, &wide, lengp PASS_REGS);
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// this is a term, extract to a buffer, and representation is wide
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}
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if (inp->type & YAP_STRING_INT && IsIntegerTerm(inp->val.t)) {
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// ASCII, so both LATIN1 and UTF-8
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// Yap_DebugPlWriteln(inp->val.t);
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char *s;
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s = Malloc(0);
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if (snprintf(s, MaxTmp(PASS_REGS1) - 1, Int_FORMAT,
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IntegerOfTerm(inp->val.t)) < 0) {
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AUX_ERROR(inp->val.t, 2 * MaxTmp(PASS_REGS1), s, char);
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}
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if (lengp)
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*lengp = strlen(s);
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return (unsigned char *)s;
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|
}
|
|
if (inp->type & YAP_STRING_FLOAT && IsFloatTerm(inp->val.t)) {
|
|
char *s;
|
|
// Yap_DebugPlWriteln(inp->val.t);
|
|
if (!Yap_FormatFloat(FloatOfTerm(inp->val.t), &s, 1024)) {
|
|
return NULL;
|
|
}
|
|
if (lengp)
|
|
*lengp = strlen(s);
|
|
return (unsigned char *)s;
|
|
}
|
|
#if USE_GMP
|
|
if (inp->type & YAP_STRING_BIG && IsBigIntTerm(inp->val.t)) {
|
|
// Yap_DebugPlWriteln(inp->val.t);
|
|
char *s;
|
|
s = Malloc(0);
|
|
if (!Yap_mpz_to_string(Yap_BigIntOfTerm(inp->val.t), s, MaxTmp() - 1, 10)) {
|
|
AUX_ERROR(inp->val.t, MaxTmp(PASS_REGS1), s, char);
|
|
}
|
|
if (lengp)
|
|
*lengp = strlen(s);
|
|
return inp->val.uc = (unsigned char *)s;
|
|
}
|
|
#endif
|
|
if (inp->type & YAP_STRING_TERM) {
|
|
// Yap_DebugPlWriteln(inp->val.t);
|
|
char *s = (char *) Yap_TermToBuffer(inp->val.t, lengp, ENC_ISO_UTF8, 0);
|
|
return inp->val.uc = (unsigned char *)s;
|
|
}
|
|
if (inp->type & YAP_STRING_CHARS) {
|
|
if (inp->enc == ENC_ISO_LATIN1) {
|
|
return latin2utf8(inp, lengp);
|
|
} else if (inp->enc == ENC_ISO_ASCII) {
|
|
if (lengp)
|
|
*lengp = strlen(inp->val.c);
|
|
return inp->val.uc;
|
|
}else { //if (inp->enc == ENC_ISO_UTF8) {
|
|
if (lengp)
|
|
*lengp = strlen(inp->val.c);
|
|
return inp->val.uc;
|
|
}
|
|
}
|
|
if (inp->type & YAP_STRING_WCHARS) {
|
|
// printf("%S\n",inp->val.w);
|
|
return wchar2utf8(inp, lengp);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static Term write_strings(unsigned char *s0, seq_tv_t *out,
|
|
size_t leng USES_REGS) {
|
|
size_t min = 0, max = leng;
|
|
|
|
if (out->type & (YAP_STRING_NCHARS | YAP_STRING_TRUNC)) {
|
|
if (out->type & YAP_STRING_NCHARS)
|
|
min = out->max;
|
|
if (out->type & YAP_STRING_TRUNC && out->max < max) {
|
|
max = out->max;
|
|
s0[max] = '\0';
|
|
}
|
|
}
|
|
|
|
char *s = (char *)s0;
|
|
Term t = init_tstring(PASS_REGS1);
|
|
LOCAL_TERM_ERROR(t, 2 * max);
|
|
unsigned char *buf = buf_from_tstring(HR);
|
|
strcpy( (char *)buf, s )
|
|
;
|
|
if (max+1 < min) {
|
|
LOCAL_TERM_ERROR(t, 2 * min);
|
|
memset(buf+min, '\0', max);
|
|
buf += min;
|
|
} else {
|
|
buf += max+1;
|
|
}
|
|
close_tstring(buf PASS_REGS);
|
|
out->val.t = t;
|
|
|
|
return out->val.t;
|
|
}
|
|
|
|
static Term write_atoms(void *s0, seq_tv_t *out, size_t leng USES_REGS) {
|
|
Term t = AbsPair(HR);
|
|
size_t sz = 0;
|
|
size_t max = leng;
|
|
if (leng == 0) {
|
|
out->val.t = t;
|
|
return TermNil;
|
|
}
|
|
if (out->type & (YAP_STRING_NCHARS | YAP_STRING_TRUNC)) {
|
|
if (out->type & YAP_STRING_TRUNC && out->max < max)
|
|
max = out->max;
|
|
}
|
|
|
|
unsigned char *s = s0, *lim = s + strnlen((char *)s, max);
|
|
unsigned char *cp = s;
|
|
unsigned char w[10], *wp = w;
|
|
LOCAL_TERM_ERROR(t, 2 * (lim - s));
|
|
while (cp < lim && *cp) {
|
|
utf8proc_int32_t chr;
|
|
CELL *cl;
|
|
s += get_utf8(s, 1, &chr);
|
|
if (chr == '\0') {
|
|
wp[0] = '\0';
|
|
break;
|
|
}
|
|
wp += put_utf8(w, chr);
|
|
cl = HR;
|
|
HR += 2;
|
|
cl[0] = MkAtomTerm(Yap_ULookupAtom(w));
|
|
cl[1] = AbsPair(HR);
|
|
sz++;
|
|
if (sz == max)
|
|
break;
|
|
}
|
|
if (out->type & YAP_STRING_DIFF) {
|
|
if (sz == 0)
|
|
t = out->dif;
|
|
else
|
|
HR[-1] = Globalize(out->dif PASS_REGS);
|
|
} else {
|
|
if (sz == 0)
|
|
t = TermNil;
|
|
else
|
|
HR[-1] = TermNil;
|
|
}
|
|
out->val.t = t;
|
|
return (t);
|
|
}
|
|
|
|
static Term write_codes(void *s0, seq_tv_t *out, size_t leng USES_REGS) {
|
|
Term t = AbsPair(HR);
|
|
size_t sz = 0;
|
|
size_t max = leng;
|
|
if (leng == 0) {
|
|
out->val.t = t;
|
|
return TermNil;
|
|
}
|
|
if (out->type & (YAP_STRING_NCHARS | YAP_STRING_TRUNC)) {
|
|
if (out->type & YAP_STRING_TRUNC && out->max < max)
|
|
max = out->max;
|
|
}
|
|
|
|
unsigned char *s = s0, *lim = s + strlen((char *)s);
|
|
unsigned char *cp = s;
|
|
|
|
LOCAL_TERM_ERROR(t, 2 * (lim - s));
|
|
while (*cp) {
|
|
utf8proc_int32_t chr;
|
|
CELL *cl;
|
|
cp += get_utf8(cp, -1, &chr);
|
|
if (chr == '\0')
|
|
break;
|
|
cl = HR;
|
|
HR += 2;
|
|
cl[0] = MkIntegerTerm(chr);
|
|
cl[1] = AbsPair(HR);
|
|
sz++;
|
|
if (sz == max)
|
|
break;
|
|
}
|
|
if (out->type & YAP_STRING_DIFF) {
|
|
if (sz == 0)
|
|
t = out->dif;
|
|
else
|
|
HR[-1] = Globalize(out->dif PASS_REGS);
|
|
} else {
|
|
if (sz == 0)
|
|
t = TermNil;
|
|
else
|
|
HR[-1] = TermNil;
|
|
}
|
|
out->val.t = t;
|
|
return (t);
|
|
}
|
|
|
|
static Atom write_atom(void *s0, seq_tv_t *out, size_t leng USES_REGS) {
|
|
unsigned char *s = s0;
|
|
int32_t ch;
|
|
if (leng == 0) {
|
|
return Yap_LookupAtom("");
|
|
}
|
|
if (strlen_utf8(s0) <= leng) {
|
|
return Yap_LookupAtom(s0);
|
|
} else {
|
|
unsigned char *buf = Malloc(leng + 1);
|
|
memcpy(buf, s0, leng);
|
|
buf[leng] = \0;
|
|
return Yap_ULookupAtom(buf);
|
|
}
|
|
}
|
|
|
|
size_t write_buffer(unsigned char *s0, seq_tv_t *out, size_t leng USES_REGS) {
|
|
size_t min = 0, max = leng, room_end;
|
|
if (out->enc == ENC_ISO_UTF8) {
|
|
room_end = strlen((char *)s0) + 1;
|
|
if (out->val.uc == NULL) { // this should always be the case
|
|
out->val.uc = malloc(room_end < 16 ? 16 : room_end);
|
|
}
|
|
if (out->val.uc != s0) {
|
|
strcpy(out->val.c, (char *)s0);
|
|
}
|
|
} else if (out->enc == ENC_ISO_LATIN1) {
|
|
room_end = strlen((char *)s0) + 1;
|
|
unsigned char *s = s0;
|
|
unsigned char *cp = s;
|
|
unsigned char *buf = out->val.uc;
|
|
if (!buf)
|
|
return -1;
|
|
while (*cp) {
|
|
utf8proc_int32_t chr;
|
|
int off = get_utf8(cp, -1, &chr);
|
|
if (off <= 0 || chr > 255)
|
|
return -1;
|
|
if (off == max)
|
|
break;
|
|
cp += off;
|
|
*buf++ = chr;
|
|
}
|
|
if (max >= min)
|
|
*buf++ = '\0';
|
|
else
|
|
while (max < min) {
|
|
utf8proc_int32_t chr;
|
|
max++;
|
|
cp += get_utf8(cp, -1, &chr);
|
|
*buf++ = chr;
|
|
}
|
|
room_end = buf - out->val.uc;
|
|
} else if (out->enc == ENC_WCHAR) {
|
|
unsigned char *s = s0, *lim = s + (max = strnlen((char *)s0, max));
|
|
unsigned char *cp = s;
|
|
wchar_t *buf0, *buf;
|
|
|
|
buf = buf0 = out->val.w;
|
|
if (!buf)
|
|
return -1;
|
|
while (*cp && cp < lim) {
|
|
utf8proc_int32_t chr;
|
|
cp += get_utf8(cp, -1, &chr);
|
|
*buf++ = chr;
|
|
}
|
|
if (max >= min)
|
|
*buf++ = '\0';
|
|
else
|
|
while (max < min) {
|
|
utf8proc_int32_t chr;
|
|
max++;
|
|
cp += get_utf8(cp, -1, &chr);
|
|
*buf++ = chr;
|
|
}
|
|
*buf = '\0';
|
|
room_end = (buf - buf0) + 1;
|
|
} else {
|
|
// no other encodings are supported.
|
|
room_end = -1;
|
|
}
|
|
return room_end;
|
|
}
|
|
|
|
static size_t write_length(const unsigned char *s0, seq_tv_t *out,
|
|
size_t leng USES_REGS) {
|
|
return leng;
|
|
}
|
|
|
|
static Term write_number(unsigned char *s, seq_tv_t *out, int size,
|
|
bool error_on USES_REGS) {
|
|
Term t;
|
|
int i = push_text_stack();
|
|
t = Yap_StringToNumberTerm((char *)s, &out->enc, error_on);
|
|
pop_text_stack(i);
|
|
return t;
|
|
}
|
|
|
|
static Term string_to_term(void *s, seq_tv_t *out, size_t leng USES_REGS) {
|
|
Term o;
|
|
o = out->val.t = Yap_BufferToTerm(s, strlen(s) + 1, TermNil);
|
|
return o;
|
|
}
|
|
|
|
bool write_Text(unsigned char *inp, seq_tv_t *out, size_t leng USES_REGS) {
|
|
/* we know what the term is */
|
|
if (out->type == 0) {
|
|
return true;
|
|
}
|
|
|
|
if (out->type & YAP_STRING_TERM) {
|
|
if ((out->val.t = string_to_term(inp, out, leng PASS_REGS)) != 0L)
|
|
return out->val.t != 0;
|
|
}
|
|
if (out->type & (YAP_STRING_INT | YAP_STRING_FLOAT | YAP_STRING_BIG)) {
|
|
if ((out->val.t = write_number(
|
|
inp, out, leng, !(out->type & YAP_STRING_ATOM) PASS_REGS)) != 0L) {
|
|
// Yap_DebugPlWriteln(out->val.t);
|
|
|
|
return true;
|
|
}
|
|
|
|
if (!(out->type & YAP_STRING_ATOM))
|
|
return false;
|
|
}
|
|
if (out->type & (YAP_STRING_ATOM)) {
|
|
if ((out->val.a = write_atom(inp, out, leng PASS_REGS)) != NIL) {
|
|
Atom at = out->val.a;
|
|
if (at && (out->type & YAP_STRING_OUTPUT_TERM))
|
|
out->val.t = MkAtomTerm(at);
|
|
// Yap_DebugPlWriteln(out->val.t);
|
|
return at != NIL;
|
|
}
|
|
}
|
|
|
|
switch (out->type & YAP_TYPE_MASK) {
|
|
case YAP_STRING_CHARS: {
|
|
size_t room = write_buffer(inp, out, leng PASS_REGS);
|
|
// printf("%s\n", out->val.c);
|
|
return ((Int)room > 0);
|
|
}
|
|
case YAP_STRING_WCHARS: {
|
|
size_t room = write_buffer(inp, out, leng PASS_REGS);
|
|
// printf("%S\n", out->val.w);
|
|
return ((Int)room > 0);
|
|
}
|
|
case YAP_STRING_STRING:
|
|
out->val.t = write_strings(inp, out, leng PASS_REGS);
|
|
// Yap_DebugPlWriteln(out->val.t);
|
|
return out->val.t != 0;
|
|
case YAP_STRING_ATOMS:
|
|
out->val.t = write_atoms(inp, out, leng PASS_REGS);
|
|
// Yap_DebugPlWriteln(out->val.t);
|
|
return out->val.t != 0;
|
|
case YAP_STRING_CODES:
|
|
out->val.t = write_codes(inp, out, leng PASS_REGS);
|
|
// Yap_DebugPlWriteln(out->val.t);
|
|
return out->val.t != 0;
|
|
case YAP_STRING_LENGTH:
|
|
out->val.l = write_length(inp, out, leng PASS_REGS);
|
|
// printf("s\n",out->val.l);
|
|
return out->val.l != (size_t)(-1);
|
|
case YAP_STRING_ATOM:
|
|
out->val.a = write_atom(inp, out, leng PASS_REGS);
|
|
// Yap_DebugPlWriteln(out->val.t);
|
|
return out->val.a != NULL;
|
|
case YAP_STRING_INT | YAP_STRING_FLOAT | YAP_STRING_BIG:
|
|
out->val.t = write_number(inp, out, leng, true PASS_REGS);
|
|
// Yap_DebugPlWriteln(out->val.t);
|
|
return out->val.t != 0;
|
|
default: { return true; }
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static size_t upcase(void *s0, seq_tv_t *out USES_REGS) {
|
|
|
|
unsigned char *s = s0;
|
|
while (*s) {
|
|
// assumes the two code have always the same size;
|
|
utf8proc_int32_t chr;
|
|
get_utf8(s, -1, &chr);
|
|
chr = utf8proc_toupper(chr);
|
|
s += put_utf8(s, chr);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static size_t downcase(void *s0, seq_tv_t *out USES_REGS) {
|
|
|
|
unsigned char *s = s0;
|
|
while (*s) {
|
|
// assumes the two code have always the same size;
|
|
utf8proc_int32_t chr;
|
|
get_utf8(s, -1, &chr);
|
|
chr = utf8proc_tolower(chr);
|
|
s += put_utf8(s, chr);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool Yap_CVT_Text(seq_tv_t *inp, seq_tv_t *out USES_REGS) {
|
|
unsigned char *buf;
|
|
bool rc;
|
|
|
|
size_t leng_s;
|
|
/*
|
|
f//printfmark(stderr, "[ %d ", n++) ;
|
|
if (inp->type & (YAP_STRING_TERM|YAP_STRING_ATOM|YAP_STRING_ATOMS_CODES
|
|
|YAP_STRING_STRING))
|
|
//Yap_DebugPlWriteln(inp->val.t);
|
|
else if (inp->type & YAP_STRING_WCHARS) fprintf(stderr,"S %S\n", inp->val
|
|
.w);
|
|
else fprintf(stderr,"s %s\n", inp->val.c);
|
|
*/
|
|
// cnt++;
|
|
buf = Yap_readText(inp, &leng_s PASS_REGS);
|
|
if (out->type & (YAP_STRING_NCHARS | YAP_STRING_TRUNC)) {
|
|
size_t max_s = skip_utf8( buf, out-> max )-buf;
|
|
if (max_s < leng_s) {
|
|
char *nbuf = Malloc(max_s + 1);
|
|
memcpy(nbuf, buf, max_s);
|
|
nbuf[max_s] = '\0';
|
|
leng_s = out->max;
|
|
}
|
|
// else if (out->type & YAP_STRING_NCHARS &&
|
|
// const unsigned char *ptr = skip_utf8(buf, leng)
|
|
}
|
|
if (!buf) {
|
|
return 0L;
|
|
}
|
|
|
|
if (out->type & (YAP_STRING_UPCASE | YAP_STRING_DOWNCASE)) {
|
|
if (out->type & YAP_STRING_UPCASE) {
|
|
if (!upcase(buf, out)) {
|
|
return false;
|
|
}
|
|
}
|
|
if (out->type & YAP_STRING_DOWNCASE) {
|
|
if (!downcase(buf, out)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
rc = write_Text(buf, out, leng_s PASS_REGS);
|
|
/* fprintf(stderr, " -> ");
|
|
if (!rc) fprintf(stderr, "NULL");
|
|
else if (out->type &
|
|
(YAP_STRING_TERM|YAP_STRING_ATOMS_CODES
|
|
|YAP_STRING_STRING)) //Yap_DebugPlWrite(out->val.t);
|
|
else if (out->type &
|
|
YAP_STRING_ATOM) //Yap_DebugPlWriteln(MkAtomTerm(out->val.a));
|
|
else if (out->type & YAP_STRING_WCHARS) fprintf(stderr, "%S",
|
|
out->val.w);
|
|
else
|
|
fprintf(stderr, "%s", out->val.c);
|
|
fprintf(stderr, "\n]\n"); */
|
|
return rc;
|
|
}
|
|
|
|
static int cmp_Text(const unsigned char *s1, const unsigned char *s2, int l) {
|
|
const unsigned char *w1 = s1;
|
|
utf8proc_int32_t chr1, chr2;
|
|
const unsigned char *w2 = s2;
|
|
int i;
|
|
for (i = 0; i < l; i++) {
|
|
w2 += get_utf8(w2, -1, &chr2);
|
|
w1 += get_utf8(w1, -1, &chr1);
|
|
if (chr1 - chr2)
|
|
return chr1 - chr2;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static unsigned char *concat(int n, void *sv[] USES_REGS) {
|
|
void *buf;
|
|
unsigned char *buf0;
|
|
size_t room = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < n; i++) {
|
|
room += strlen((char *)sv[i]);
|
|
}
|
|
buf = Malloc(room + 1);
|
|
buf0 = buf;
|
|
for (i = 0; i < n; i++) {
|
|
#if _WIN32 || defined(__ANDROID__)
|
|
strcpy(buf, sv[i]);
|
|
buf = (char *)buf + strlen(buf);
|
|
#else
|
|
buf = stpcpy(buf, sv[i]);
|
|
#endif
|
|
}
|
|
return buf0;
|
|
}
|
|
|
|
static void *slice(size_t min, size_t max, unsigned char *buf USES_REGS) {
|
|
unsigned char *nbuf = Malloc((max - min) * 4 + 1);
|
|
const unsigned char *ptr = skip_utf8(buf, min);
|
|
unsigned char *nptr = nbuf;
|
|
utf8proc_int32_t chr;
|
|
|
|
while (min++ < max) {
|
|
ptr += get_utf8(ptr, -1, &chr);
|
|
nptr += put_utf8(nptr, chr);
|
|
}
|
|
nptr[0] = '\0';
|
|
return nbuf;
|
|
}
|
|
|
|
//
|
|
// Out must be an atom or a string
|
|
bool Yap_Concat_Text(int tot, seq_tv_t inp[], seq_tv_t *out USES_REGS) {
|
|
void **bufv;
|
|
unsigned char *buf;
|
|
int i;
|
|
size_t leng;
|
|
|
|
|
|
bufv = Malloc(tot * sizeof(unsigned char *));
|
|
if (!bufv) {
|
|
return NULL;
|
|
}
|
|
for (i = 0; i < tot; i++) {
|
|
inp[i].type |= YAP_STRING_WITH_BUFFER;
|
|
unsigned char *nbuf = Yap_readText(inp + i, &leng PASS_REGS);
|
|
|
|
if (!nbuf) {
|
|
return NULL;
|
|
}
|
|
bufv[i] = nbuf;
|
|
}
|
|
buf = concat(tot, bufv PASS_REGS);
|
|
bool rc = write_Text(buf, out, strlen_utf8(buf) PASS_REGS);
|
|
|
|
return rc;
|
|
}
|
|
|
|
//
|
|
bool Yap_Splice_Text(int n, size_t cuts[], seq_tv_t *inp,
|
|
seq_tv_t outv[] USES_REGS) {
|
|
unsigned char *buf;
|
|
size_t l;
|
|
|
|
inp->type |= YAP_STRING_IN_TMP;
|
|
buf = Yap_readText(inp, &l PASS_REGS);
|
|
if (!buf) {
|
|
return false;
|
|
}
|
|
if (!cuts) {
|
|
if (n == 2) {
|
|
size_t l0, l1;
|
|
unsigned char *buf0, *buf1;
|
|
|
|
if (outv[0].val.t) {
|
|
buf0 = Yap_readText(outv, &l0 PASS_REGS);
|
|
if (!buf0) {
|
|
return false;
|
|
}
|
|
if (cmp_Text(buf, buf0, l0) != 0) {
|
|
return false;
|
|
}
|
|
l1 = l - l0;
|
|
|
|
buf1 = slice(l0, l, buf PASS_REGS);
|
|
bool rc = write_Text(buf1, outv + 1, l1 PASS_REGS);
|
|
if (!rc) {
|
|
return false;
|
|
}
|
|
return rc;
|
|
} else /* if (outv[1].val.t) */ {
|
|
buf1 = Yap_readText(outv + 1, &l1 PASS_REGS);
|
|
if (!buf1) {
|
|
return false;
|
|
}
|
|
l0 = l - l1;
|
|
if (cmp_Text(skip_utf8((const unsigned char *)buf, l0), buf1, l1) !=
|
|
0) {
|
|
return false;
|
|
}
|
|
buf0 = slice(0, l0, buf PASS_REGS);
|
|
bool rc = write_Text(buf0, outv, l0 PASS_REGS);
|
|
return rc;
|
|
}
|
|
}
|
|
}
|
|
int i, next;
|
|
for (i = 0; i < n; i++) {
|
|
if (i == 0)
|
|
next = 0;
|
|
else
|
|
next = cuts[i - 1];
|
|
if (i > 0 && cuts[i] == 0)
|
|
break;
|
|
void *bufi = slice(next, cuts[i], buf PASS_REGS);
|
|
if (!write_Text(bufi, outv + i, cuts[i] - next PASS_REGS)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Function to convert a generic text term (string, atom, list of codes, list
|
|
of<
|
|
atoms) into a buff
|
|
er.
|
|
*
|
|
* @param t the term
|
|
* @param buf the buffer, if NULL a buffer is malloced, and the user should
|
|
reclai it
|
|
* @param len buffer size
|
|
* @param enc encoding (UTF-8 is strongly recommended)
|
|
*
|
|
* @return the buffer, or NULL in case of failure. If so, Yap_Error may be
|
|
called.
|
|
*/
|
|
const char *Yap_TextTermToText(Term t, char *buf, size_t len, encoding_t enc) {
|
|
CACHE_REGS
|
|
seq_tv_t inp, out;
|
|
inp.val.t = t;
|
|
if (IsAtomTerm(t) && t != TermNil) {
|
|
inp.type = YAP_STRING_ATOM;
|
|
inp.enc = ENC_ISO_UTF8;
|
|
} else if (IsStringTerm(t)) {
|
|
inp.type = YAP_STRING_STRING;
|
|
inp.enc = ENC_ISO_UTF8;
|
|
} else if (IsPairOrNilTerm(t)) {
|
|
inp.type = (YAP_STRING_CODES | YAP_STRING_ATOMS);
|
|
} else {
|
|
Yap_Error(TYPE_ERROR_TEXT, t, NULL);
|
|
return false;
|
|
}
|
|
out.enc = enc;
|
|
out.type = YAP_STRING_CHARS;
|
|
out.val.c = buf;
|
|
if (!Yap_CVT_Text(&inp, &out PASS_REGS))
|
|
return NULL;
|
|
return out.val.c;
|
|
}
|
|
|
|
/**
|
|
* Convert from a predicate structure to an UTF-8 string of the form
|
|
*
|
|
* module:name/arity.
|
|
*
|
|
* The result is in very volatile memory.
|
|
*
|
|
* @param s the buffer
|
|
*
|
|
* @return the temporary string
|
|
*/
|
|
const char *Yap_PredIndicatorToUTF8String(PredEntry *ap) {
|
|
CACHE_REGS
|
|
Atom at;
|
|
arity_t arity = 0;
|
|
Functor f;
|
|
char *s, *smax, *s0;
|
|
s = s0 = malloc(1024);
|
|
smax = s + 1024;
|
|
Term tmod = ap->ModuleOfPred;
|
|
if (tmod) {
|
|
Yap_AtomToUTF8Text(AtomOfTerm(tmod), s);
|
|
s += strlen(s);
|
|
if (smax - s > 1) {
|
|
strcat(s, ":");
|
|
} else {
|
|
return NULL;
|
|
}
|
|
s++;
|
|
} else {
|
|
if (smax - s > strlen("prolog:")) {
|
|
s = strcpy(s, "prolog:");
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
// follows the actual functor
|
|
if (ap->ModuleOfPred == IDB_MODULE) {
|
|
if (ap->PredFlags & NumberDBPredFlag) {
|
|
Int key = ap->src.IndxId;
|
|
snprintf(s, smax - s, "%" PRIdPTR, key);
|
|
return LOCAL_FileNameBuf;
|
|
} else if (ap->PredFlags & AtomDBPredFlag) {
|
|
at = (Atom)(ap->FunctorOfPred);
|
|
if (!Yap_AtomToUTF8Text(at, s))
|
|
return NULL;
|
|
} else {
|
|
f = ap->FunctorOfPred;
|
|
at = NameOfFunctor(f);
|
|
arity = ArityOfFunctor(f);
|
|
}
|
|
} else {
|
|
arity = ap->ArityOfPE;
|
|
if (arity) {
|
|
at = NameOfFunctor(ap->FunctorOfPred);
|
|
} else {
|
|
at = (Atom)(ap->FunctorOfPred);
|
|
}
|
|
}
|
|
if (!Yap_AtomToUTF8Text(at, s)) {
|
|
return NULL;
|
|
}
|
|
s += strlen(s);
|
|
snprintf(s, smax - s, "/%" PRIdPTR, arity);
|
|
return s0;
|
|
}
|
|
|
|
/**
|
|
* Convert from a text buffer (8-bit) to a term that has the same type as
|
|
* _Tguide_
|
|
*
|
|
≈* @param s the buffer
|
|
≈ * @param tguide the guide
|
|
*
|
|
≈ * @return the term
|
|
*/
|
|
Term Yap_MkTextTerm(const char *s, encoding_t enc, Term tguide) {
|
|
CACHE_REGS
|
|
if (IsAtomTerm(tguide))
|
|
return MkAtomTerm(Yap_LookupAtom(s));
|
|
if (IsStringTerm(tguide))
|
|
return MkStringTerm(s);
|
|
if (IsPairTerm(tguide) && IsAtomTerm(HeadOfTerm(tguide))) {
|
|
return Yap_CharsToListOfAtoms(s, enc PASS_REGS);
|
|
}
|
|
return Yap_CharsToListOfCodes(s, enc PASS_REGS);
|
|
}
|