1251 lines
32 KiB
C
1251 lines
32 KiB
C
/*************************************************************************
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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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#if !defined(HAVE_STPCPY) && !defined(__APPLE__)
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inline static void *__stpcpy(void *i, const void *j) {
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return strcpy(i, j) + strlen(j);
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}
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#define stpcpy __stpcpy
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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 AllocLevel(void) { return LOCAL_TextBuffer->lvl; }
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// void pop_text_stack(int i) { LOCAL_TextBuffer->lvl = i; }
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void insert_block(struct mblock *o) {
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int lvl = o->lvl;
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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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}
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void release_block(struct mblock *o) {
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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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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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}
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int push_text_stack__(USES_REGS1) {
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int i = LOCAL_TextBuffer->lvl;
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i++;
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LOCAL_TextBuffer->lvl = i;
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return i;
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}
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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 = lvl;
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return lvl;
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}
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void *pop_output_text_stack__(int i, const void *export) {
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int lvl = LOCAL_TextBuffer->lvl;
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bool found = false;
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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 == export) {
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found = true;
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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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if (found) {
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if (lvl) {
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struct mblock *o = (struct mblock *)export-1;
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o->lvl = lvl;
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o->prev = o->next = 0;
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insert_block(o);
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} else {
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struct mblock *p = (struct mblock *)export-1;
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size_t sz = p->sz - sizeof(struct mblock);
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memmove(p, p + 1, sz);
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export = p;
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}
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}
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return (void *)export;
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}
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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->sz = sz;
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o->lvl = lvl;
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o->prev = o->next = 0;
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insert_block(o);
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return o + 1;
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}
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void *MallocAtLevel(size_t sz, int atL USES_REGS) {
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int lvl = LOCAL_TextBuffer->lvl;
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if (atL > 0 && atL <= lvl) {
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lvl = atL;
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} else if (atL < 0 && lvl - atL >= 0) {
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lvl += atL;
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} else {
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return NULL;
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}
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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->sz = sz;
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o->lvl = lvl;
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o->prev = o->next = 0;
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insert_block(o);
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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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struct mblock *old = pt, *o;
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old--;
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sz = ALIGN_BY_TYPE(sz + sizeof(struct mblock), CELL);
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o = realloc(old, sz);
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if (o->next) {
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o->next->prev = o;
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} else {
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LOCAL_TextBuffer->last[o->lvl] = o;
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}
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if (o->prev) {
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o->prev->next = o;
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} else {
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LOCAL_TextBuffer->first[o->lvl] = o;
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}
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o->sz = sz;
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return o + 1;
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}
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/**
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* Export a local memory object as a RO object to the outside world, that is,
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* recovering as much storage as one can.
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* @param pt pointer to object
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* @return new object
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*/
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const void *MallocExportAsRO(const void *pt USES_REGS) {
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struct mblock *old = (void *)pt, *o = old - 1;
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if (old == NULL)
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return NULL;
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size_t sz = o->sz;
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release_block(o);
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memmove((void *)o, pt, sz);
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return realloc((void *)o, sz);
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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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release_block(o);
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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) { return 1025; }
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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 void *codes2buf(Term t0, void *b0, bool get_codes,
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bool fixed USES_REGS) {
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unsigned char *st0, *st, ar[16];
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Term t = t0;
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size_t length = 0;
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if (t == TermNil) {
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st0 = Malloc(4);
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st0[0] = 0;
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return st0;
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}
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if (!IsPairTerm(t)) {
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Yap_ThrowError(TYPE_ERROR_LIST, t, "scanning list of codes");
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return NULL;
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}
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bool codes = IsIntegerTerm(HeadOfTerm(t));
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if (get_codes != codes && fixed) {
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if (codes) {
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Yap_ThrowError(TYPE_ERROR_INTEGER, HeadOfTerm(t),
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"scanning list of codes");
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} else {
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Yap_ThrowError(TYPE_ERROR_ATOM, HeadOfTerm(t), "scanning list of atoms");
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}
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}
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if (codes) {
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while (IsPairTerm(t)) {
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Term hd = HeadOfTerm(t);
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if (IsVarTerm(hd)) {
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Yap_ThrowError(INSTANTIATION_ERROR, hd, "scanning list of codes");
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return NULL;
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}
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if (!IsIntegerTerm(hd)) {
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Yap_ThrowError(TYPE_ERROR_CHARACTER_CODE, hd, "scanning list of codes");
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return NULL;
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}
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Int code = IntegerOfTerm(hd);
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if (code < 0) {
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Yap_ThrowError(REPRESENTATION_ERROR_CHARACTER_CODE, hd,
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"scanning list of character codes, found %d", code);
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return NULL;
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}
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length += put_utf8(ar, code);
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t = TailOfTerm(t);
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if (IsVarTerm(t)) {
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Yap_ThrowError(INSTANTIATION_ERROR, t, "scanning list of codes");
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return NULL;
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}
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if (!IsPairTerm(t) && t != TermNil) {
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Yap_ThrowError(TYPE_ERROR_LIST, t, "scanning list of codes");
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return NULL;
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}
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}
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} else {
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while (IsPairTerm(t)) {
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Term hd = HeadOfTerm(t);
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if (IsVarTerm(hd)) {
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Yap_ThrowError(INSTANTIATION_ERROR, hd, "scanning list of codes");
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return NULL;
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}
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if (!IsAtomTerm(hd)) {
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Yap_ThrowError(TYPE_ERROR_CHARACTER, hd, "scanning list of texts");
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return NULL;
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}
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const char *code = RepAtom(AtomOfTerm(hd))->StrOfAE;
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if (code < 0) {
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Yap_ThrowError(TYPE_ERROR_CHARACTER, hd, "scanning list of atoms");
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return NULL;
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}
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length += strlen(code);
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t = TailOfTerm(t);
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if (IsVarTerm(t)) {
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Yap_ThrowError(INSTANTIATION_ERROR, t, "scanning list of codes");
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return NULL;
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}
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if (!IsPairTerm(t) && t != TermNil) {
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Yap_ThrowError(TYPE_ERROR_LIST, t, "scanning list of codes");
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return NULL;
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}
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}
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}
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if (!IsVarTerm(t)) {
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if (t != TermNil) {
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Yap_ThrowError(TYPE_ERROR_LIST, t, "scanning list of codes");
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return NULL;
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}
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}
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st0 = st = Malloc(length + 1);
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t = t0;
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if (codes) {
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while (IsPairTerm(t)) {
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Term hd = HeadOfTerm(t);
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Int code = IntegerOfTerm(hd);
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st = st + put_utf8(st, code);
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t = TailOfTerm(t);
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}
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} else {
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while (IsPairTerm(t)) {
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Term hd = HeadOfTerm(t);
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const char *code = RepAtom(AtomOfTerm(hd))->StrOfAE;
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st = (unsigned char *)stpcpy((char *)st, code);
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t = TailOfTerm(t);
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}
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}
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st[0] = '\0';
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return st0;
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}
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static unsigned char *latin2utf8(seq_tv_t *inp) {
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unsigned char *b0 = inp->val.uc;
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size_t sz = 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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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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}
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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) {
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size_t sz = wcslen(inp->val.w) * 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, const unsigned char *buf USES_REGS);
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static unsigned char *Yap_ListOfCodesToBuffer(unsigned char *buf, Term t,
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seq_tv_t *inp USES_REGS) {
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bool codes = true, fixed = true;
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unsigned char *nbuf = codes2buf(t, buf, codes, fixed PASS_REGS);
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return nbuf;
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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 USES_REGS) {
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bool codes = false;
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unsigned char *nbuf = codes2buf(t, buf, codes, true PASS_REGS);
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return nbuf;
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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 USES_REGS) {
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return codes2buf(t, buf, NULL, false 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 USES_REGS) {
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#define POPRET(x) return pop_output_text_stack(lvl, x)
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int lvl = push_text_stack();
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char *out = NULL;
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yap_error_number err0 = LOCAL_Error_TYPE;
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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_ActiveError->errorRawTerm = inp->val.t;
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} else if (!IsPairOrNilTerm(inp->val.t) && !IsStringTerm(inp->val.t) &&
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!IsAtomTerm(inp->val.t) && !(inp->type & YAP_STRING_DATUM)) {
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LOCAL_Error_TYPE = TYPE_ERROR_TEXT;
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}
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}
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if (err0 != LOCAL_Error_TYPE) {
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Yap_ThrowError(LOCAL_Error_TYPE, inp->val.t, "while reading text in");
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}
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}
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if ((inp->val.t == TermNil) && inp->type & YAP_STRING_PREFER_LIST )
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{
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out = Malloc(4);
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memset(out, 0, 4);
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POPRET( out );
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}
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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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if (RepAtom(at)->UStrOfAE[0] == 0) {
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out = Malloc(4);
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memset(out, 0, 4);
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POPRET( out );
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}
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if (inp->type & YAP_STRING_WITH_BUFFER) {
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pop_text_stack(lvl);
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return at->UStrOfAE;
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}
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{
|
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size_t sz = strlen(at->StrOfAE);
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out = Malloc(sz + 1);
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strcpy(out, at->StrOfAE);
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POPRET( out );
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}
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}
|
|
if (IsStringTerm(inp->val.t) && inp->type & YAP_STRING_STRING) {
|
|
// this is a term, extract to a buffer, and representation is wide
|
|
// Yap_DebugPlWriteln(inp->val.t);
|
|
const char *s = StringOfTerm(inp->val.t);
|
|
if (s[0] == 0) {
|
|
out = Malloc(4);
|
|
memset(out, 0, 4);
|
|
POPRET( out );
|
|
}
|
|
if (inp->type & YAP_STRING_WITH_BUFFER) {
|
|
pop_text_stack(lvl);
|
|
return (unsigned char *)UStringOfTerm(inp->val.t);
|
|
}
|
|
{
|
|
inp->type |= YAP_STRING_IN_TMP;
|
|
size_t sz = strlen(s);
|
|
out = Malloc(sz + 1);
|
|
strcpy(out, s);
|
|
POPRET( out );
|
|
}
|
|
} else if (IsPairOrNilTerm(inp->val.t)) {
|
|
if (((inp->type & (YAP_STRING_CODES | YAP_STRING_ATOMS)) ==
|
|
(YAP_STRING_CODES | YAP_STRING_ATOMS))) {
|
|
// Yap_DebugPlWriteln(inp->val.t);
|
|
out = (char *)Yap_ListToBuffer(NULL, inp->val.t, inp PASS_REGS);
|
|
POPRET( out );
|
|
// this is a term, extract to a sfer, and representation is wide
|
|
}
|
|
if (inp->type & YAP_STRING_CODES) {
|
|
// Yap_DebugPlWriteln(inp->val.t);
|
|
out = (char *)Yap_ListOfCodesToBuffer(NULL, inp->val.t, inp PASS_REGS);
|
|
// this is a term, extract to a sfer, and representation is wide
|
|
POPRET( out );
|
|
}
|
|
if (inp->type & YAP_STRING_ATOMS) {
|
|
// Yap_DebugPlWriteln(inp->val.t);
|
|
out = (char *)Yap_ListOfAtomsToBuffer(NULL, inp->val.t, inp PASS_REGS);
|
|
// this is a term, extract to a buffer, and representation is wide
|
|
POPRET( out );
|
|
}
|
|
}
|
|
if (inp->type & YAP_STRING_INT && IsIntegerTerm(inp->val.t)) {
|
|
// ASCII, so both LATIN1 and UTF-8
|
|
// Yap_DebugPlWriteln(inp->val.t);
|
|
out = Malloc(2 * MaxTmp(PASS_REGS1));
|
|
if (snprintf(out, MaxTmp(PASS_REGS1) - 1, Int_FORMAT,
|
|
IntegerOfTerm(inp->val.t)) < 0) {
|
|
AUX_ERROR(inp->val.t, 2 * MaxTmp(PASS_REGS1), out, char);
|
|
}
|
|
POPRET( out );
|
|
}
|
|
if (inp->type & YAP_STRING_FLOAT && IsFloatTerm(inp->val.t)) {
|
|
out = Malloc(2 * MaxTmp(PASS_REGS1));
|
|
if (!Yap_FormatFloat(FloatOfTerm(inp->val.t), &out, 1024)) {
|
|
pop_text_stack(lvl);
|
|
return NULL;
|
|
}
|
|
POPRET(out);
|
|
}
|
|
#if USE_GMP
|
|
if (inp->type & YAP_STRING_BIG && IsBigIntTerm(inp->val.t)) {
|
|
// Yap_DebugPlWriteln(inp->val.t);
|
|
out = Malloc(MaxTmp());
|
|
if (!Yap_mpz_to_string(Yap_BigIntOfTerm(inp->val.t), out, MaxTmp() - 1,
|
|
10)) {
|
|
AUX_ERROR(inp->val.t, MaxTmp(PASS_REGS1), out, char);
|
|
}
|
|
POPRET(out);
|
|
}
|
|
#endif
|
|
if (inp->type & YAP_STRING_TERM) {
|
|
pop_text_stack(lvl);
|
|
return (unsigned char *)Yap_TermToBuffer(inp->val.t, 0);
|
|
}
|
|
|
|
if (inp->type & YAP_STRING_CHARS) {
|
|
if (inp->enc == ENC_ISO_ASCII) {
|
|
pop_text_stack(lvl);
|
|
return inp->val.uc;
|
|
}
|
|
|
|
if (inp->enc == ENC_ISO_LATIN1) {
|
|
POPRET( (char*)latin2utf8(inp));
|
|
}
|
|
|
|
pop_text_stack(lvl);
|
|
return inp->val.uc;
|
|
}
|
|
if (inp->type & YAP_STRING_WCHARS) {
|
|
// printf("%S\n",inp->val.w);
|
|
POPRET( (char *)wchar2utf8(inp) );
|
|
}
|
|
pop_text_stack(lvl);
|
|
return NULL;
|
|
}
|
|
|
|
static Term write_strings(unsigned char *s0, seq_tv_t *out USES_REGS) {
|
|
size_t min = 0, max = strlen((char *)s0);
|
|
|
|
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);
|
|
if (max == 0)
|
|
buf[0] = '\0';
|
|
else
|
|
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 USES_REGS) {
|
|
Term t = AbsPair(HR);
|
|
char *s1 = (char *)s0;
|
|
size_t sz = 0;
|
|
size_t max = strlen(s1);
|
|
if (s1[0] == '\0') {
|
|
out->val.t = TermNil;
|
|
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];
|
|
int wp = 0;
|
|
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') {
|
|
w[0] = '\0';
|
|
break;
|
|
}
|
|
wp = put_utf8(w, chr);
|
|
w[wp] = '\0';
|
|
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 USES_REGS) {
|
|
Term t;
|
|
size_t sz = strlen(s0);
|
|
if (sz == 0) {
|
|
if (out->type & YAP_STRING_DIFF) {
|
|
out->val.t = Globalize(out->dif PASS_REGS);
|
|
} else {
|
|
out->val.t = TermNil;
|
|
}
|
|
return out->val.t;
|
|
}
|
|
unsigned char *s = s0, *lim = s + sz;
|
|
unsigned char *cp = s;
|
|
|
|
t = AbsPair(HR);
|
|
LOCAL_TERM_ERROR(t, 2 * (lim - s));
|
|
t = AbsPair(HR);
|
|
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);
|
|
}
|
|
if (sz == 0) {
|
|
HR[-1] = Globalize(out->dif PASS_REGS);
|
|
} else {
|
|
HR[-1] = TermNil;
|
|
}
|
|
out->val.t = t;
|
|
return (t);
|
|
}
|
|
|
|
static Atom write_atom(void *s0, seq_tv_t *out USES_REGS) {
|
|
unsigned char *s = s0;
|
|
int32_t ch;
|
|
if (s[0] == '\0') {
|
|
return Yap_LookupAtom("");
|
|
}
|
|
size_t leng = strlen(s0);
|
|
if (strlen_utf8(s0) <= leng) {
|
|
return Yap_LookupAtom(s0);
|
|
} else {
|
|
size_t n = get_utf8(s, -1, &ch);
|
|
unsigned char *buf = Malloc(n + 1);
|
|
memmove(buf, s0, n + 1);
|
|
return Yap_ULookupAtom(buf);
|
|
}
|
|
}
|
|
|
|
void *write_buffer(unsigned char *s0, seq_tv_t *out USES_REGS) {
|
|
int l = push_text_stack();
|
|
size_t leng = strlen((char *)s0);
|
|
size_t min = 0, max = leng;
|
|
if (out->enc == ENC_ISO_UTF8) {
|
|
if (out->val.uc == NULL) { // this should always be the case
|
|
out->val.uc = Malloc(leng + 1);
|
|
strcpy(out->val.c, (char *)s0);
|
|
} else if (out->val.uc != s0) {
|
|
out->val.c = Malloc(leng + 1);
|
|
strcpy(out->val.c, (char *)s0);
|
|
}
|
|
} else if (out->enc == ENC_ISO_LATIN1) {
|
|
|
|
unsigned char *s = s0;
|
|
unsigned char *cp = s;
|
|
unsigned char *buf = out->val.uc;
|
|
if (!buf) {
|
|
pop_text_stack(l);
|
|
return NULL;
|
|
}
|
|
while (*cp) {
|
|
utf8proc_int32_t chr;
|
|
int off = get_utf8(cp, -1, &chr);
|
|
if (off <= 0 || chr > 255) {
|
|
pop_text_stack(l);
|
|
return NULL;
|
|
}
|
|
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;
|
|
}
|
|
} 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) {
|
|
pop_text_stack(l);
|
|
return NULL;
|
|
}
|
|
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';
|
|
} else {
|
|
// no other encodings are supported.
|
|
pop_text_stack(l);
|
|
return NULL;
|
|
}
|
|
out->val.c = pop_output_text_stack(l, out->val.c);
|
|
return out->val.c;
|
|
}
|
|
|
|
static size_t write_length(const unsigned char *s0, seq_tv_t *out USES_REGS) {
|
|
return strlen_utf8(s0);
|
|
}
|
|
|
|
static Term write_number(unsigned char *s, seq_tv_t *out,
|
|
bool error_on USES_REGS) {
|
|
Term t;
|
|
LOCAL_delay = !error_on;
|
|
t = Yap_StringToNumberTerm((char *)s, &out->enc, error_on);
|
|
LOCAL_delay = false;
|
|
return t;
|
|
}
|
|
|
|
static Term string_to_term(void *s, seq_tv_t *out USES_REGS) {
|
|
Term o;
|
|
yap_error_descriptor_t *new_error = malloc(sizeof(yap_error_descriptor_t));
|
|
bool mdnew = Yap_pushErrorContext(true, new_error);
|
|
o = out->val.t = Yap_BufferToTerm(s, TermNil);
|
|
Yap_popErrorContext(mdnew, true);
|
|
|
|
return o;
|
|
}
|
|
|
|
bool write_Text(unsigned char *inp, seq_tv_t *out USES_REGS) {
|
|
/* we know what the term is */
|
|
if (out->type == 0) {
|
|
return true;
|
|
}
|
|
if (LOCAL_Error_TYPE) {
|
|
return false;
|
|
}
|
|
|
|
if (out->type & (YAP_STRING_INT | YAP_STRING_FLOAT | YAP_STRING_BIG)) {
|
|
if ((out->val.t = write_number(
|
|
inp, out, !(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 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;
|
|
}
|
|
}
|
|
if (out->type & YAP_STRING_DATUM) {
|
|
if ((out->val.t = string_to_term(inp, out PASS_REGS)) != 0L)
|
|
return out->val.t != 0;
|
|
}
|
|
|
|
switch (out->type & YAP_TYPE_MASK) {
|
|
case YAP_STRING_CHARS: {
|
|
void *room = write_buffer(inp, out PASS_REGS);
|
|
// printf("%s\n", out->val.c);
|
|
return room != NULL;
|
|
}
|
|
case YAP_STRING_WCHARS: {
|
|
void *room = write_buffer(inp, out PASS_REGS);
|
|
// printf("%S\n", out->val.w);
|
|
return room != NULL;
|
|
}
|
|
case YAP_STRING_STRING:
|
|
out->val.t = write_strings(inp, out PASS_REGS);
|
|
// Yap_DebugPlWriteln(out->val.t);
|
|
return out->val.t != 0;
|
|
case YAP_STRING_ATOMS:
|
|
out->val.t = write_atoms(inp, out PASS_REGS);
|
|
// Yap_DebugPlWriteln(out->val.t);
|
|
return out->val.t != 0;
|
|
case YAP_STRING_CODES:
|
|
out->val.t = write_codes(inp, out PASS_REGS);
|
|
// Yap_DebugPlWriteln(out->val.t);
|
|
return out->val.t != 0;
|
|
case YAP_STRING_LENGTH:
|
|
out->val.l = write_length(inp, out 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 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, 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;
|
|
|
|
/*
|
|
//printf(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++;
|
|
int l = push_text_stack();
|
|
buf = Yap_readText(inp PASS_REGS);
|
|
if (!buf) {
|
|
pop_text_stack(l);
|
|
return 0L;
|
|
}
|
|
if (buf[0]) {
|
|
size_t leng = strlen_utf8(buf);
|
|
if (out->type & (YAP_STRING_NCHARS | YAP_STRING_TRUNC)) {
|
|
if (out->max < leng) {
|
|
const unsigned char *ptr = skip_utf8(buf, out->max);
|
|
size_t diff = (ptr - buf);
|
|
char *nbuf = Malloc(diff + 1);
|
|
memmove(nbuf, buf, diff);
|
|
nbuf[diff] = '\0';
|
|
leng = diff;
|
|
}
|
|
// else if (out->type & YAP_STRING_NCHARS &&
|
|
// const unsigned char *ptr = skip_utf8(buf)
|
|
}
|
|
|
|
if (out->type & (YAP_STRING_UPCASE | YAP_STRING_DOWNCASE)) {
|
|
if (out->type & YAP_STRING_UPCASE) {
|
|
if (!upcase(buf, out)) {
|
|
pop_text_stack(l);
|
|
return false;
|
|
}
|
|
}
|
|
if (out->type & YAP_STRING_DOWNCASE) {
|
|
if (!downcase(buf, out)) {
|
|
pop_text_stack(l);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
rc = write_Text(buf, out 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"); */
|
|
pop_text_stack(l);
|
|
return rc;
|
|
}
|
|
|
|
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++) {
|
|
char *s = sv[i];
|
|
if (s[0])
|
|
room += strlen(s);
|
|
}
|
|
buf = Malloc(room + 1);
|
|
buf0 = buf;
|
|
for (i = 0; i < n; i++) {
|
|
char *s = sv[i];
|
|
if (!s[0])
|
|
continue;
|
|
#if _WIN32 || defined(__ANDROID__)
|
|
strcpy(buf, s);
|
|
buf = (char *)buf + strlen(buf);
|
|
#else
|
|
buf = stpcpy(buf, s);
|
|
#endif
|
|
}
|
|
return buf0;
|
|
}
|
|
|
|
static void *slice(size_t min, size_t max, const unsigned char *buf USES_REGS) {
|
|
unsigned char *nbuf = BaseMalloc((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, j;
|
|
|
|
int lvl = push_text_stack();
|
|
bufv = Malloc(tot * sizeof(unsigned char *));
|
|
if (!bufv) {
|
|
pop_text_stack(lvl);
|
|
return NULL;
|
|
}
|
|
for (i = 0, j = 0; i < tot; i++) {
|
|
inp[j].type |= YAP_STRING_WITH_BUFFER;
|
|
unsigned char *nbuf = Yap_readText(inp + i PASS_REGS);
|
|
|
|
if (!nbuf) {
|
|
pop_text_stack(lvl);
|
|
return NULL;
|
|
}
|
|
// if (!nbuf[0])
|
|
// continue;
|
|
bufv[j++] = nbuf;
|
|
}
|
|
if (j == 0) {
|
|
buf = Malloc(8);
|
|
memset(buf, 0, 4);
|
|
} else if (j == 1) {
|
|
buf = bufv[0];
|
|
} else {
|
|
buf = concat(tot, bufv PASS_REGS);
|
|
}
|
|
bool rc = write_Text(buf, out PASS_REGS);
|
|
pop_text_stack( lvl );
|
|
|
|
return rc;
|
|
}
|
|
|
|
//
|
|
bool Yap_Splice_Text(int n, size_t cuts[], seq_tv_t *inp,
|
|
seq_tv_t outv[] USES_REGS) {
|
|
int lvl = push_text_stack();
|
|
const unsigned char *buf;
|
|
size_t b_l, u_l;
|
|
|
|
inp->type |= YAP_STRING_IN_TMP;
|
|
buf = Yap_readText(inp PASS_REGS);
|
|
if (!buf) {
|
|
pop_text_stack(lvl);
|
|
return false;
|
|
}
|
|
b_l = strlen((char *)buf);
|
|
if (b_l == 0) {
|
|
pop_text_stack(lvl);
|
|
return false;
|
|
}
|
|
u_l = strlen_utf8(buf);
|
|
if (!cuts) {
|
|
if (n == 2) {
|
|
size_t b_l0, b_l1, u_l0, u_l1;
|
|
unsigned char *buf0, *buf1;
|
|
|
|
if (outv[0].val.t) {
|
|
buf0 = Yap_readText(outv PASS_REGS);
|
|
if (!buf0) {
|
|
return false;
|
|
}
|
|
b_l0 = strlen((const char *)buf0);
|
|
if (memcmp(buf, buf0, b_l0) != 0) {
|
|
pop_text_stack(lvl);
|
|
return false;
|
|
}
|
|
u_l0 = strlen_utf8(buf0);
|
|
u_l1 = u_l - u_l0;
|
|
|
|
b_l1 = b_l - b_l0;
|
|
buf1 = slice(u_l0, u_l, buf PASS_REGS);
|
|
b_l1 = strlen((const char *)buf1);
|
|
bool rc = write_Text(buf1, outv + 1 PASS_REGS);
|
|
pop_text_stack(lvl);
|
|
if (!rc) {
|
|
return false;
|
|
}
|
|
return rc;
|
|
} else /* if (outv[1].val.t) */ {
|
|
buf1 = Yap_readText(outv + 1 PASS_REGS);
|
|
if (!buf1) {
|
|
pop_text_stack(lvl);
|
|
return false;
|
|
}
|
|
b_l1 = strlen((char *)buf1);
|
|
u_l1 = strlen_utf8(buf1);
|
|
b_l0 = b_l - b_l1;
|
|
u_l0 = u_l - u_l1;
|
|
if (memcmp(skip_utf8((const unsigned char *)buf, b_l0), buf1, b_l1) !=
|
|
0) {
|
|
pop_text_stack(lvl);
|
|
return false;
|
|
}
|
|
buf0 = slice(0, u_l0, buf PASS_REGS);
|
|
buf0 = pop_output_text_stack(lvl, buf0);
|
|
bool rc = write_Text(buf0, outv 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);
|
|
bufi = pop_output_text_stack(lvl, bufi);
|
|
if (!write_Text(bufi, outv + i PASS_REGS)) {
|
|
return false;
|
|
}
|
|
}
|
|
pop_text_stack(lvl);
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
char *sn = Yap_AtomToUTF8Text(AtomOfTerm(tmod));
|
|
stpcpy(s, sn);
|
|
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 (!stpcpy(s, Yap_AtomToUTF8Text(at)))
|
|
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 (!stpcpy(s, Yap_AtomToUTF8Text(at))) {
|
|
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, int guide USES_REGS) {
|
|
if (guide == YAP_STRING_ATOM) {
|
|
return MkAtomTerm(Yap_LookupAtom(s));
|
|
} else if (guide == YAP_STRING_STRING) {
|
|
return MkStringTerm(s);
|
|
} else if (guide == YAP_STRING_ATOMS) {
|
|
return Yap_CharsToListOfAtoms(s, ENC_ISO_UTF8 PASS_REGS);
|
|
} else {
|
|
return Yap_CharsToListOfCodes(s, ENC_ISO_UTF8 PASS_REGS);
|
|
}
|
|
}
|