1426 lines
35 KiB
C
1426 lines
35 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 "Yatom.h"
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#include "YapHeap.h"
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#include "eval.h"
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#include "yapio.h"
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#include "YapText.h"
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#if defined(__BIG_ENDIAN__)
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#define ENC_WCHAR ENC_ISO_UTF32_BE
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#else
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#define ENC_WCHAR ENC_ISO_UTF32_LE
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#endif
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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
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min_size(size_t i, size_t j) {
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return ( i < j ? i : j );
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}
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#define wcsnlen(S, N) min_size(N, wcslen(S))
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#endif
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static inline unsigned char *get_char(unsigned char *p, int *c) { *c = *p; return p+1; }
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static inline wchar_t *get_wchar(wchar_t *p, int *c) { *c = *p; return p+1; }
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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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static Term
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Globalize(Term v USES_REGS)
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{
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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 char *
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get_string_from_list( Term t, seq_tv_t *inp, char *s, int atoms USES_REGS)
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{
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char *s0 = s;
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size_t max = -1;
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if (inp->type & YAP_STRING_TRUNC) {
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max = inp->max;
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}
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if (TRUE /* atoms == -1 */) {
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while (t != TermNil) {
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Term h = HeadOfTerm(t);
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if (IsAtomTerm(h)) {
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Atom at;
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if (IsWideAtom(at = AtomOfTerm(h)))
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*s++ = RepAtom(at)->WStrOfAE[0];
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else
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*s++ = (unsigned char)(RepAtom(at)->StrOfAE[0]);
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} else {
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*s++ = IntOfTerm(h);
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}
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if (--max == 0) {
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*s++ = 0;
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return s0;
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}
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t = TailOfTerm(t);
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}
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} else if (atoms) {
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while (t != TermNil) {
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Atom at;
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if (IsWideAtom(at = AtomOfTerm(HeadOfTerm(t)))) {
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int i = RepAtom(at)->WStrOfAE[0];
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if (i <= 0) {
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LOCAL_Error_TYPE = REPRESENTATION_ERROR_CHARACTER_CODE;
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return NULL;
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}
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*s++ = i;
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} else
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*s++ = RepAtom(at)->StrOfAE[0];
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if (--max == 0) {
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*s++ = 0;
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return s0;
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}
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t = TailOfTerm(t);
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}
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} else {
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while (t != TermNil) {
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Int i = IntOfTerm(HeadOfTerm(t));
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if (i <= 0 || i > 255) {
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LOCAL_Error_TYPE = REPRESENTATION_ERROR_CHARACTER_CODE;
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return NULL;
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}
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*s++ = i;
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if (--max == 0) {
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*s++ = '\0';
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return s0;
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}
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t = TailOfTerm(t);
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}
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}
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*s++ = '\0';
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return s0;
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}
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static wchar_t *
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get_wide_from_list( Term t, seq_tv_t *inp, wchar_t *s, int atoms USES_REGS)
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{
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wchar_t *s0 = s;
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size_t max = -1;
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if (inp->type & YAP_STRING_TRUNC) {
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max = inp->max;
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}
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if (TRUE /* atoms == -1*/) {
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while (t != TermNil) {
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Term h = HeadOfTerm(t);
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if (IsAtomTerm(h)) {
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Atom at;
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if (IsWideAtom(at = AtomOfTerm(h)))
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*s++ = RepAtom(at)->WStrOfAE[0];
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else
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*s++ = (unsigned char)(RepAtom(at)->StrOfAE[0]);
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} else {
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*s++ = IntOfTerm(h);
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}
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if (--max == 0) {
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*s++ = 0;
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return s0;
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}
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t = TailOfTerm(t);
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}
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} else if (atoms) {
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while (t != TermNil) {
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Atom at;
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if (IsWideAtom(at = AtomOfTerm(HeadOfTerm(t))))
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*s++ = RepAtom(at)->WStrOfAE[0];
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else
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*s++ = (unsigned char)(RepAtom(at)->StrOfAE[0]);
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if (--max == 0) {
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*s++ = 0;
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return s0;
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}
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t = TailOfTerm(t);
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}
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} else {
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while (t != TermNil) {
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int code;
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*s++ = code = IntOfTerm(HeadOfTerm(t));
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if (code <= 0) {
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LOCAL_Error_TYPE = REPRESENTATION_ERROR_CHARACTER_CODE;
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return NULL;
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}
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if (--max == 0) {
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*s++ = 0;
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return s0;
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}
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t = TailOfTerm(t);
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}
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}
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*s++ = '\0';
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return s0;
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}
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static Int
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SkipListCodes(Term *l, Term **tailp, Int *atoms, int *wide)
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{
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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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do_derefa(v,l,derefa_unk,derefa_nonvar);
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s = l;
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if (*l == TermNil) {
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*tailp = l;
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*atoms = 0;
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*wide = FALSE;
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return 0;
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}
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if ( IsPairTerm(*l) )
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{ intptr_t power = 1, lam = 0;
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do
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{ if ( power == lam )
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{ s = l;
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power *= 2;
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lam = 0;
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}
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lam++;
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length++;
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{ Term hd = Deref(RepPair(*l)[0]);
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if (IsVarTerm(hd)) {
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length = -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; return -TYPE_ERROR_STRING; } */
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if (IsWideAtom(AtomOfTerm(hd))) {
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if ((RepAtom(AtomOfTerm(hd))->WStrOfAE)[1] != '\0') { length = -REPRESENTATION_ERROR_CHARACTER; }
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*wide = TRUE;
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} else {
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AtomEntry *ae = RepAtom(AtomOfTerm(hd));
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if ((ae->StrOfAE)[1] != '\0') { length = -REPRESENTATION_ERROR_CHARACTER_CODE; }
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}
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} else if (IsIntTerm(hd)) {
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Int ch = IntOfTerm(hd);
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if (/* *atoms|| */ch < 0) { *tailp = l; /*if (*atoms) length = -TYPE_ERROR_STRING;*/ length = -DOMAIN_ERROR_NOT_LESS_THAN_ZERO; }
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else if (ch > 0x80) { *wide = TRUE; }
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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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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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*tailp = l;
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return length;
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}
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static void *
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Yap_ListOfAtomsToBuffer(void *buf, Term t, seq_tv_t *inp, int *widep, size_t *lenp USES_REGS)
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{
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Int atoms = 0;
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CELL *r = NULL;
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Int n;
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*widep = FALSE;
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n = SkipListCodes(&t, &r, &atoms, widep);
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if (n < 0) {
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LOCAL_Error_TYPE = -n;
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LOCAL_Error_Term = *r;
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return NULL;
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}
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if (*r != TermNil) {
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if (IsVarTerm(*r))
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LOCAL_Error_TYPE = INSTANTIATION_ERROR;
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else
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LOCAL_Error_TYPE = TYPE_ERROR_LIST;
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LOCAL_Error_Term = *r;
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return NULL;
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}
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/* if (n && !atoms) {
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LOCAL_Error_Term = t;
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LOCAL_Error_TYPE = TYPE_ERROR_CHARACTER;
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return NULL;
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}
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*/
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*lenp = n;
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if (*widep) {
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wchar_t *s;
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if (buf) s = buf;
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else s = ((AtomEntry *)Yap_PreAllocCodeSpace())->WStrOfAE;
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AUX_ERROR( t, 2*(n+1), s, wchar_t);
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s = get_wide_from_list( t, inp, s, atoms PASS_REGS);
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return s;
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} else {
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char *s;
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if (buf) s = buf;
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else s = ((AtomEntry *)Yap_PreAllocCodeSpace())->StrOfAE;
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AUX_ERROR( t, 2*(n+1), s, char);
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s = get_string_from_list( t, inp, s, atoms PASS_REGS);
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return s;
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}
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}
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static void *
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Yap_ListOfCodesToBuffer(void *buf, Term t, seq_tv_t *inp, int *widep, size_t *lenp USES_REGS)
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{
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Int atoms = 0;
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CELL *r = NULL;
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Int n;
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*widep = FALSE;
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n = SkipListCodes(&t, &r, &atoms, widep);
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if (n < 0) {
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LOCAL_Error_TYPE = -n;
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LOCAL_Error_Term = *r;
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return NULL;
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}
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if (*r != TermNil) {
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if (IsVarTerm(*r))
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LOCAL_Error_TYPE = INSTANTIATION_ERROR;
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else
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LOCAL_Error_TYPE = TYPE_ERROR_LIST;
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LOCAL_Error_Term = *r;
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return NULL;
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}
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if (n && atoms)
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return NULL;
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*lenp = n;
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if (*widep) {
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wchar_t *s;
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if (buf) s = buf;
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else s = ((AtomEntry *)Yap_PreAllocCodeSpace())->WStrOfAE;
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AUX_ERROR( t, 2*(n+1), s, wchar_t);
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s = get_wide_from_list( t, inp, s, atoms PASS_REGS);
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return s;
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} else {
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char *s;
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if (buf) s = buf;
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else s = ((AtomEntry *)Yap_PreAllocCodeSpace())->StrOfAE;
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AUX_ERROR( t, 2*(n+1), s, char);
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s = get_string_from_list( t, inp, s, atoms PASS_REGS);
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return s;
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}
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}
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static void *
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Yap_ListToBuffer(void *buf, Term t, seq_tv_t *inp, int *widep, size_t *lenp USES_REGS)
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{
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Int atoms = 0;
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CELL *r = NULL;
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Int n;
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*widep = FALSE;
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n = SkipListCodes(&t, &r, &atoms, widep);
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if (n < 0) {
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LOCAL_Error_TYPE = -n;
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LOCAL_Error_Term = *r;
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return NULL;
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}
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if (*r != TermNil) {
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if (IsVarTerm(*r))
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LOCAL_Error_TYPE = INSTANTIATION_ERROR;
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else
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LOCAL_Error_TYPE = TYPE_ERROR_LIST;
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LOCAL_Error_Term = *r;
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return NULL;
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}
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*lenp = n;
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if (*widep) {
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wchar_t *s;
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if (buf) s = buf;
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else s = ((AtomEntry *)Yap_PreAllocCodeSpace())->WStrOfAE;
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AUX_ERROR( t, 2*(n+1), s, wchar_t);
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s = get_wide_from_list( t, inp, s, atoms PASS_REGS);
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return s;
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} else {
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char *s;
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if (buf) s = buf;
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else s = ((AtomEntry *)Yap_PreAllocCodeSpace())->StrOfAE;
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AUX_ERROR( t, 2*(n+1), s, char);
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s = get_string_from_list( t, inp, s, atoms PASS_REGS);
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return s;
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}
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}
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static yap_error_number
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gen_type_error(int flags) {
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if ((flags & (YAP_STRING_STRING|YAP_STRING_ATOM|YAP_STRING_INT|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|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|YAP_STRING_FLOAT|YAP_STRING_BIG)) ==
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(YAP_STRING_STRING|YAP_STRING_ATOM|YAP_STRING_INT|YAP_STRING_FLOAT|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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void *
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Yap_readText( void *buf, seq_tv_t *inp, encoding_t *enc, int *minimal, size_t *lengp USES_REGS)
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{
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char *s;
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wchar_t *ws;
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/* we know what the term is */
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switch (inp->type & YAP_TYPE_MASK) {
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case YAP_STRING_STRING:
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{ const char *s;
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if (IsVarTerm(inp->val.t)) {
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LOCAL_Error_TYPE = INSTANTIATION_ERROR;
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LOCAL_Error_Term = inp->val.t;
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return 0L;
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}
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if (!IsStringTerm(inp->val.t)) {
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LOCAL_Error_TYPE = TYPE_ERROR_STRING;
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LOCAL_Error_Term = inp->val.t;
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return 0L;
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}
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s = StringOfTerm( inp->val.t );
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if ( s == NULL ) {
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return 0L;
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}
|
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// this is a term, extract the UTF8 representation
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*enc = ENC_ISO_UTF8;
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*minimal = FALSE;
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*lengp = strlen(s);
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return (void *)s;
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}
|
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case YAP_STRING_CODES:
|
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// this is a term, extract to a sfer, and representation is wide
|
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*minimal = TRUE;
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{
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int wide = FALSE;
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s = Yap_ListOfCodesToBuffer( buf, inp->val.t, inp, &wide, lengp PASS_REGS);
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if (!s) {
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return NULL;
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}
|
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*enc = ( wide ? ENC_WCHAR : ENC_ISO_LATIN1 );
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}
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return s;
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case YAP_STRING_ATOMS:
|
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// this is a term, extract to a buffer, and representation is wide
|
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*minimal = TRUE;
|
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{
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int wide = FALSE;
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s = Yap_ListOfAtomsToBuffer( buf, inp->val.t, inp, &wide, lengp PASS_REGS);
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if (!s) return NULL;
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if (wide) { *enc = ENC_WCHAR; }
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else { *enc = ENC_ISO_LATIN1; }
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}
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return s;
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case YAP_STRING_ATOMS_CODES:
|
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// this is a term, extract to a buffer, and representation is wide
|
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*minimal = TRUE;
|
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{
|
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int wide = FALSE;
|
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s = Yap_ListToBuffer( buf, inp->val.t, inp, &wide, lengp PASS_REGS);
|
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if (!s) {
|
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return NULL;
|
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}
|
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*enc = ( wide ? ENC_WCHAR : ENC_ISO_LATIN1 );
|
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}
|
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return s;
|
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case YAP_STRING_ATOM:
|
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// this is a term, extract to a buffer, and representation is wide
|
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*minimal = TRUE;
|
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if (IsVarTerm(inp->val.t)) {
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LOCAL_Error_TYPE = INSTANTIATION_ERROR;
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LOCAL_Error_Term = inp->val.t;
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return 0L;
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} else if (!IsAtomTerm(inp->val.t)) {
|
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LOCAL_Error_TYPE = TYPE_ERROR_ATOM;
|
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LOCAL_Error_Term = inp->val.t;
|
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return NULL;
|
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} else {
|
|
Atom at = AtomOfTerm(inp->val.t);
|
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if (IsWideAtom(at)) {
|
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ws = at->WStrOfAE;
|
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*lengp = wcslen(ws);
|
|
*enc = ENC_WCHAR;
|
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return ws;
|
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} else {
|
|
s = at->StrOfAE;
|
|
*lengp = strlen(s);
|
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*enc = ENC_ISO_LATIN1;
|
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return s;
|
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}
|
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}
|
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break;
|
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case YAP_STRING_INT:
|
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if (buf) s = buf;
|
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else s = Yap_PreAllocCodeSpace();
|
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AUX_ERROR( MkIntTerm(inp->val.i), LOCAL_MAX_SIZE, s, char);
|
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if (snprintf(s, LOCAL_MAX_SIZE-1, Int_FORMAT, inp->val.i) < 0) {
|
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AUX_ERROR( MkIntTerm(inp->val.i), 2*LOCAL_MAX_SIZE, s, char);
|
|
}
|
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*enc = ENC_ISO_LATIN1;
|
|
*lengp = strlen(s);
|
|
return s;
|
|
case YAP_STRING_FLOAT:
|
|
if (buf) s = buf;
|
|
else s = Yap_PreAllocCodeSpace();
|
|
AUX_ERROR( MkFloatTerm(inp->val.f), LOCAL_MAX_SIZE, s, char);
|
|
if ( !Yap_FormatFloat( inp->val.f, s, LOCAL_MAX_SIZE-1 ) ) {
|
|
AUX_ERROR( MkFloatTerm(inp->val.f), 2*LOCAL_MAX_SIZE, s, char);
|
|
}
|
|
*lengp = strlen(s);
|
|
*enc = ENC_ISO_LATIN1;
|
|
return s;
|
|
#if USE_GMP
|
|
case YAP_STRING_BIG:
|
|
if (buf) s = buf;
|
|
else s = Yap_PreAllocCodeSpace();
|
|
if ( !Yap_mpz_to_string( inp->val.b, s, LOCAL_MAX_SIZE-1 , 10 ) ) {
|
|
AUX_ERROR( MkIntTerm(0), LOCAL_MAX_SIZE, s, char);
|
|
}
|
|
*enc = ENC_ISO_LATIN1;
|
|
*lengp = strlen(s);
|
|
return s;
|
|
#endif
|
|
case YAP_STRING_CHARS:
|
|
*enc = ENC_ISO_LATIN1;
|
|
if (inp->type & YAP_STRING_NCHARS)
|
|
*lengp = inp->sz;
|
|
else
|
|
*lengp = strlen(inp->val.c);
|
|
return (void *)inp->val.c;
|
|
case YAP_STRING_WCHARS:
|
|
*enc = ENC_WCHAR;
|
|
if (inp->type & YAP_STRING_NCHARS)
|
|
*lengp = inp->sz;
|
|
else
|
|
*lengp = wcslen(inp->val.w);
|
|
return (void *)inp->val.w;
|
|
case YAP_STRING_LITERAL:
|
|
{
|
|
char *s, *o;
|
|
if (buf) s = buf;
|
|
else s = Yap_PreAllocCodeSpace();
|
|
size_t sz = LOCAL_MAX_SIZE-1;
|
|
o = Yap_TermToString(inp->val.t, s, sz, lengp, ENC_ISO_UTF8, 0);
|
|
return s;
|
|
}
|
|
default:
|
|
if (!(inp->type & YAP_STRING_TERM)) {
|
|
return NULL;
|
|
} else {
|
|
Term t = inp->val.t;
|
|
if (IsVarTerm(t)) {
|
|
LOCAL_Error_TYPE = INSTANTIATION_ERROR;
|
|
LOCAL_Error_Term = t;
|
|
return NULL;
|
|
} else if (IsStringTerm(t)) {
|
|
if (inp->type & (YAP_STRING_STRING)) {
|
|
inp->type &= (YAP_STRING_STRING);
|
|
return Yap_readText( buf, inp, enc, minimal, lengp PASS_REGS);
|
|
} else {
|
|
LOCAL_Error_TYPE = gen_type_error( inp->type );
|
|
LOCAL_Error_Term = t;
|
|
}
|
|
} else if (IsPairTerm(t) ) {
|
|
if (inp->type & (YAP_STRING_CODES|YAP_STRING_ATOMS)) {
|
|
inp->type &= (YAP_STRING_CODES|YAP_STRING_ATOMS);
|
|
return Yap_readText( buf, inp, enc, minimal, lengp PASS_REGS);
|
|
} else {
|
|
LOCAL_Error_TYPE = gen_type_error( inp->type );
|
|
LOCAL_Error_Term = t;
|
|
}
|
|
} else if (IsAtomTerm(t)) {
|
|
if (t == TermNil && inp->type & (YAP_STRING_CODES|YAP_STRING_ATOMS)) {
|
|
inp->type &= (YAP_STRING_CODES|YAP_STRING_ATOMS);
|
|
return Yap_readText( buf, inp, enc, minimal, lengp PASS_REGS);
|
|
} else if (inp->type & (YAP_STRING_ATOM)) {
|
|
inp->type &= (YAP_STRING_ATOM);
|
|
inp->val.t = t;
|
|
return Yap_readText( buf, inp, enc, minimal, lengp PASS_REGS);
|
|
// [] is special...
|
|
} else {
|
|
LOCAL_Error_TYPE = gen_type_error( inp->type );
|
|
LOCAL_Error_Term = t;
|
|
}
|
|
} else if (IsIntegerTerm(t)) {
|
|
if (inp->type & (YAP_STRING_INT)) {
|
|
inp->type &= (YAP_STRING_INT);
|
|
inp->val.i = IntegerOfTerm(t);
|
|
return Yap_readText( buf, inp, enc, minimal, lengp PASS_REGS);
|
|
} else {
|
|
LOCAL_Error_TYPE = gen_type_error( inp->type );
|
|
LOCAL_Error_Term = t;
|
|
}
|
|
} else if (IsFloatTerm(t)) {
|
|
if (inp->type & (YAP_STRING_FLOAT)) {
|
|
inp->type &= (YAP_STRING_FLOAT);
|
|
inp->val.f = FloatOfTerm(t);
|
|
return Yap_readText( buf, inp, enc, minimal, lengp PASS_REGS);
|
|
} else {
|
|
LOCAL_Error_TYPE = gen_type_error( inp->type );
|
|
LOCAL_Error_Term = t;
|
|
}
|
|
#if USE_GMP
|
|
} else if (IsBigIntTerm(t)) {
|
|
if (inp->type & (YAP_STRING_BIG)) {
|
|
inp->type &= (YAP_STRING_BIG);
|
|
inp->val.b = Yap_BigIntOfTerm(t);
|
|
return Yap_readText( buf, inp, enc, minimal, lengp PASS_REGS);
|
|
} else {
|
|
LOCAL_Error_TYPE = gen_type_error( inp->type );
|
|
LOCAL_Error_Term = t;
|
|
}
|
|
#endif
|
|
} else {
|
|
if (!Yap_IsGroundTerm(t)) {
|
|
LOCAL_Error_TYPE = INSTANTIATION_ERROR;
|
|
LOCAL_Error_Term = t;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
static Term
|
|
write_strings( void *s0, seq_tv_t *out, encoding_t enc, int minimal, 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->sz;
|
|
if (out->type & YAP_STRING_TRUNC && out->max < max) max = out->max;
|
|
}
|
|
|
|
switch (enc) {
|
|
case ENC_ISO_UTF8:
|
|
{ char *s = s0, *lim = s + (max = strnlen(s, max));
|
|
Term t = init_tstring( PASS_REGS1 );
|
|
char *cp = s, *buf;
|
|
|
|
LOCAL_TERM_ERROR( 2*(lim-s) );
|
|
buf = buf_from_tstring(HR);
|
|
while (*cp && cp < lim) {
|
|
int chr;
|
|
cp = utf8_get_char(cp, &chr);
|
|
buf = utf8_put_char(buf, chr);
|
|
}
|
|
if (max >= min) *buf++ = '\0';
|
|
else while (max < min) {
|
|
max++;
|
|
buf = utf8_put_char(buf, '\0');
|
|
}
|
|
|
|
close_tstring( buf PASS_REGS );
|
|
out->val.t = t;
|
|
}
|
|
break;
|
|
case ENC_ISO_LATIN1:
|
|
{ unsigned char *s = s0, *lim = s + (max = strnlen(s0, max));
|
|
Term t = init_tstring( PASS_REGS1 );
|
|
unsigned char *cp = s;
|
|
char *buf;
|
|
|
|
LOCAL_TERM_ERROR( 2*(lim-s) );
|
|
buf = buf_from_tstring(HR);
|
|
while (cp < lim) {
|
|
int chr;
|
|
cp = get_char(cp, &chr);
|
|
buf = utf8_put_char(buf, chr);
|
|
}
|
|
if (max >= min) *buf++ = '\0';
|
|
else while (max < min) {
|
|
max++;
|
|
buf = utf8_put_char(buf, '\0');
|
|
}
|
|
close_tstring( buf PASS_REGS );
|
|
out->val.t = t;
|
|
}
|
|
break;
|
|
case ENC_WCHAR:
|
|
{ wchar_t *s = s0, *lim = s + (max = wcsnlen(s, max));
|
|
Term t = init_tstring( PASS_REGS1 );
|
|
wchar_t *wp = s;
|
|
char *buf;
|
|
|
|
LOCAL_TERM_ERROR( 2*(lim-s) );
|
|
buf = buf_from_tstring(HR);
|
|
while (wp < lim) {
|
|
int chr;
|
|
wp = get_wchar(wp, &chr);
|
|
buf = utf8_put_char(buf, chr);
|
|
}
|
|
if (max >= min) *buf++ = '\0';
|
|
else while (max < min) {
|
|
max++;
|
|
buf = utf8_put_char(buf, '\0');
|
|
}
|
|
close_tstring( buf PASS_REGS );
|
|
out->val.t = t;
|
|
}
|
|
break;
|
|
default:
|
|
Yap_Error(SYSTEM_ERROR, TermNil, "Unsupported Encoding ~s in %s", enc_name(enc), __FUNCTION__);
|
|
}
|
|
|
|
return out->val.t;
|
|
}
|
|
|
|
static Term
|
|
write_atoms( void *s0, seq_tv_t *out, encoding_t enc, int minimal, 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;
|
|
}
|
|
|
|
switch (enc) {
|
|
case ENC_ISO_UTF8:
|
|
{ char *s = s0, *lim = s + strnlen(s, max);
|
|
char *cp = s;
|
|
wchar_t w[2];
|
|
w[1] = '\0';
|
|
LOCAL_TERM_ERROR( 2*(lim-s) );
|
|
while (cp < lim && *cp) {
|
|
int chr;
|
|
CELL *cl;
|
|
cp = utf8_get_char(cp, &chr);
|
|
if (chr == '\0') break;
|
|
w[0] = chr;
|
|
cl = HR;
|
|
HR += 2;
|
|
cl[0] = MkAtomTerm(Yap_LookupMaybeWideAtom(w));
|
|
cl[1] = AbsPair(HR);
|
|
sz++;
|
|
if (sz == max) break;
|
|
}
|
|
break;
|
|
}
|
|
case ENC_ISO_LATIN1:
|
|
{ unsigned char *s = s0, *lim = s + strnlen(s0, max);
|
|
unsigned char *cp = s;
|
|
char w[2];
|
|
w[1] = '\0';
|
|
|
|
LOCAL_TERM_ERROR( 2*(lim-s) );
|
|
while (cp < lim) {
|
|
int chr;
|
|
cp = get_char(cp, &chr);
|
|
if (chr == '\0') break;
|
|
w[0] = chr;
|
|
HR[0] = MkAtomTerm(Yap_LookupAtom(w));
|
|
HR[1] = AbsPair(HR+2);
|
|
HR += 2;
|
|
sz++;
|
|
if (sz == max) break;
|
|
}
|
|
break;
|
|
}
|
|
case ENC_WCHAR:
|
|
{ wchar_t *s = s0, *lim = s + wcsnlen(s, max);
|
|
wchar_t *cp = s;
|
|
wchar_t w[2];
|
|
w[1] = '\0';
|
|
|
|
LOCAL_TERM_ERROR( 2*(lim-s) );
|
|
while (*cp && cp < lim) {
|
|
int chr;
|
|
cp = get_wchar(cp, &chr);
|
|
if (chr == '\0') break;
|
|
w[0] = chr;
|
|
HR[0] = MkAtomTerm(Yap_LookupMaybeWideAtom(w));
|
|
HR[1] = AbsPair(HR+2);
|
|
HR += 2;
|
|
sz++;
|
|
if (sz == max) break;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
Yap_Error(SYSTEM_ERROR, TermNil, "Unsupported Encoding ~s in %s", enc_name(enc), __FUNCTION__);
|
|
}
|
|
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, encoding_t enc, int minimal, size_t leng USES_REGS)
|
|
{
|
|
Term t = AbsPair(HR);
|
|
size_t min = 0, max = leng;
|
|
size_t sz = 0;
|
|
|
|
if (out->type & (YAP_STRING_NCHARS|YAP_STRING_TRUNC)) {
|
|
if (out->type & YAP_STRING_NCHARS) min = out->sz;
|
|
if (out->type & YAP_STRING_TRUNC && out->max < max) max = out->max;
|
|
}
|
|
|
|
switch (enc) {
|
|
case ENC_ISO_UTF8:
|
|
{ char *s = s0, *lim = s + strnlen(s, max);
|
|
char *cp = s;
|
|
LOCAL_TERM_ERROR( 2*(lim-s) );
|
|
while (*cp && cp < lim) {
|
|
int chr;
|
|
cp = utf8_get_char(cp, &chr);
|
|
HR[0] = MkIntTerm(chr);
|
|
HR[1] = AbsPair(HR+2);
|
|
HR += 2;
|
|
sz++;
|
|
if (sz == max) break;
|
|
}
|
|
break;
|
|
}
|
|
case ENC_ISO_LATIN1:
|
|
{ unsigned char *s = s0, *lim = s + strnlen(s0, max);
|
|
unsigned char *cp = s;
|
|
|
|
LOCAL_TERM_ERROR( 2*(lim-s) );
|
|
while (cp < lim) {
|
|
int chr;
|
|
cp = get_char(cp, &chr);
|
|
HR[0] = MkIntTerm(chr);
|
|
HR[1] = AbsPair(HR+2);
|
|
HR += 2;
|
|
sz++;
|
|
if (sz == max) break;
|
|
}
|
|
break;
|
|
}
|
|
case ENC_WCHAR:
|
|
{ wchar_t *s = s0, *lim = s + wcsnlen(s, max);
|
|
wchar_t *cp = s;
|
|
|
|
LOCAL_TERM_ERROR( 2*(lim-s) );
|
|
while (cp < lim) {
|
|
int chr;
|
|
cp = get_wchar(cp, &chr);
|
|
HR[0] = MkIntTerm(chr);
|
|
HR[1] = AbsPair(HR+2);
|
|
HR += 2;
|
|
sz++;
|
|
if (sz == max) break;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
Yap_Error(SYSTEM_ERROR, TermNil, "Unsupported Encoding ~s in %s", enc_name(enc), __FUNCTION__);
|
|
}
|
|
while (sz < min) {
|
|
HR[0] = MkIntTerm(MkIntTerm(0));
|
|
HR[1] = AbsPair(HR+2);
|
|
HR += 2;
|
|
sz++;
|
|
}
|
|
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, encoding_t enc, int minimal, size_t leng USES_REGS)
|
|
{
|
|
size_t max = leng;
|
|
if (out->type & (YAP_STRING_NCHARS|YAP_STRING_TRUNC)) {
|
|
if (out->type & YAP_STRING_TRUNC && out->max < max) max = out->max;
|
|
}
|
|
|
|
switch (enc) {
|
|
case ENC_ISO_UTF8:
|
|
{ char *s = s0, *lim = s + strnlen(s, max);
|
|
wchar_t *buf = malloc(sizeof(wchar_t)*((lim+1)-s)), *ptr = buf;
|
|
Atom at;
|
|
|
|
while (*s && s < lim) {
|
|
int chr;
|
|
s = utf8_get_char(s, &chr);
|
|
*ptr++ = chr;
|
|
}
|
|
*ptr++ = '\0';
|
|
at = Yap_LookupMaybeWideAtomWithLength( buf, max );
|
|
free( buf );
|
|
out->val.a = at;
|
|
return at;
|
|
}
|
|
case ENC_ISO_LATIN1:
|
|
{ char *s = s0;
|
|
Atom at;
|
|
|
|
max = strnlen(s, max);
|
|
at = Yap_LookupAtomWithLength(s, max);
|
|
out->val.a = at;
|
|
return at;
|
|
}
|
|
case ENC_WCHAR:
|
|
{ wchar_t *s = s0;
|
|
Atom at;
|
|
|
|
max = wcsnlen(s, max);
|
|
out->val.a = at = Yap_LookupMaybeWideAtomWithLength(s, max);
|
|
return at;
|
|
}
|
|
default:
|
|
Yap_Error(SYSTEM_ERROR, TermNil, "Unsupported Encoding ~s in %s", enc_name(enc), __FUNCTION__);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static ssize_t
|
|
write_length( void *s0, seq_tv_t *out, encoding_t enc, int minimal, size_t leng USES_REGS)
|
|
{
|
|
size_t max = -1;
|
|
|
|
if (out->type & (YAP_STRING_NCHARS|YAP_STRING_TRUNC)) {
|
|
if (out->type & YAP_STRING_NCHARS && out->sz != (size_t)-1) return out->sz;
|
|
if (out->type & YAP_STRING_TRUNC) max = out->max;
|
|
}
|
|
|
|
switch (enc) {
|
|
case ENC_ISO_UTF8:
|
|
{
|
|
const char *s = s0;
|
|
return utf8_strlen1(s);
|
|
}
|
|
case ENC_ISO_LATIN1:
|
|
{
|
|
const char *s = s0;
|
|
return strnlen(s, max);
|
|
}
|
|
case ENC_WCHAR:
|
|
{
|
|
const wchar_t *s = s0;
|
|
return wcsnlen(s, max);
|
|
}
|
|
default:
|
|
Yap_Error(SYSTEM_ERROR, TermNil, "Unsupported Encoding ~s in %s", enc_name(enc), __FUNCTION__);
|
|
}
|
|
return (size_t)-1;
|
|
}
|
|
|
|
static Term
|
|
write_number( void *s0, seq_tv_t *out, encoding_t enc, int minimal, int size USES_REGS)
|
|
{
|
|
return Yap_StringToNumberTerm(s0, enc);
|
|
}
|
|
|
|
static Term
|
|
string_to_term( void *s0, seq_tv_t *out, encoding_t enc, int minimal, size_t leng USES_REGS)
|
|
{
|
|
return Yap_StringToTerm(s0, strlen(s0)+1, enc, 1200, NULL);
|
|
}
|
|
|
|
|
|
int
|
|
write_Text( void *inp, seq_tv_t *out, encoding_t enc, int minimal, size_t leng USES_REGS)
|
|
{
|
|
/* we know what the term is */
|
|
switch (out->type & YAP_TYPE_MASK) {
|
|
case YAP_STRING_STRING:
|
|
out->val.t =
|
|
write_strings( inp, out, enc, minimal, leng PASS_REGS);
|
|
return out->val.t != 0;
|
|
case YAP_STRING_ATOMS:
|
|
out->val.t =
|
|
write_atoms( inp, out, enc, minimal, leng PASS_REGS);
|
|
return out->val.t != 0;
|
|
case YAP_STRING_CODES:
|
|
out->val.t =
|
|
write_codes( inp, out, enc, minimal, leng PASS_REGS);
|
|
return out->val.t != 0;
|
|
case YAP_STRING_LENGTH:
|
|
out->val.l =
|
|
write_length( inp, out, enc, minimal, leng PASS_REGS);
|
|
return out->val.l != (ssize_t)(-1);
|
|
case YAP_STRING_ATOM:
|
|
out->val.a =
|
|
write_atom( inp, out, enc, minimal, leng PASS_REGS);
|
|
return out->val.a != NULL;
|
|
case YAP_STRING_INT:
|
|
case YAP_STRING_FLOAT:
|
|
case YAP_STRING_BIG:
|
|
out->val.t =
|
|
write_number( inp, out, enc, minimal, leng PASS_REGS);
|
|
return out->val.t != 0;
|
|
case YAP_STRING_CHARS:
|
|
out->val.c = inp;
|
|
return 1;
|
|
case YAP_STRING_WCHARS:
|
|
out->val.w = inp;
|
|
return MkIntTerm(0);
|
|
case YAP_STRING_LITERAL:
|
|
return 0;
|
|
default:
|
|
if (!(out->type & YAP_STRING_TERM))
|
|
return 0;
|
|
if (out->type & (YAP_STRING_INT|YAP_STRING_FLOAT|YAP_STRING_BIG))
|
|
if ((out->val.t =
|
|
write_number( inp, out, enc, minimal, leng PASS_REGS)) != 0L)
|
|
return out->val.t != 0;
|
|
if (out->type & (YAP_STRING_ATOM))
|
|
if (write_atom( inp, out, enc, minimal, leng PASS_REGS) != NIL) {
|
|
Atom at = out->val.a;
|
|
if (at != NIL)
|
|
out->val.t = MkAtomTerm(at);
|
|
return at != NIL;
|
|
}
|
|
if (out->type & (YAP_STRING_LITERAL))
|
|
if ((out->val.t =
|
|
string_to_term( inp, out, enc, minimal, leng PASS_REGS)) != 0L)
|
|
return out->val.t != 0;
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
int
|
|
Yap_CVT_Text( seq_tv_t *inp, seq_tv_t *out USES_REGS)
|
|
{
|
|
encoding_t enc;
|
|
int minimal = FALSE;
|
|
char *buf;
|
|
size_t leng;
|
|
|
|
buf = Yap_readText( NULL, inp, &enc, &minimal, &leng PASS_REGS );
|
|
if (!buf)
|
|
return 0L;
|
|
return write_Text( buf, out, enc, minimal, leng PASS_REGS );
|
|
}
|
|
|
|
static void *
|
|
compute_end( void *s0, encoding_t enc )
|
|
{
|
|
switch (enc) {
|
|
case ENC_ISO_LATIN1:
|
|
case ENC_ISO_UTF8:
|
|
{
|
|
char *s = (char *)s0;
|
|
return s+(1+strlen(s));
|
|
}
|
|
case ENC_WCHAR:
|
|
{
|
|
wchar_t *s = (wchar_t *)s0;
|
|
return s + (1+wcslen(s));
|
|
}
|
|
default:
|
|
Yap_Error(SYSTEM_ERROR, TermNil, "Unsupported Encoding ~s in %s", enc_name(enc), __FUNCTION__);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void *
|
|
advance_Text( void *s, int l, encoding_t enc )
|
|
{
|
|
switch (enc) {
|
|
case ENC_ISO_LATIN1:
|
|
return ((char *)s)+l;
|
|
case ENC_ISO_UTF8:
|
|
return (char *)utf8_skip((const char *)s,l);
|
|
case ENC_WCHAR:
|
|
return ((wchar_t *)s)+l;
|
|
default:
|
|
Yap_Error(SYSTEM_ERROR, TermNil, "Unsupported Encoding ~s in %s", enc_name(enc), __FUNCTION__);
|
|
}
|
|
return s;
|
|
}
|
|
|
|
static int
|
|
cmp_Text( void *s1, void *s2, int l, encoding_t enc1, encoding_t enc2 )
|
|
{
|
|
Int i;
|
|
switch (enc1) {
|
|
case ENC_ISO_LATIN1:
|
|
{
|
|
char *w1 = (char *)s1;
|
|
switch (enc2) {
|
|
case ENC_ISO_LATIN1:
|
|
return strncmp(s1, s2, l);
|
|
case ENC_ISO_UTF8:
|
|
{
|
|
int chr1, chr2;
|
|
char *w2 = s2;
|
|
for (i = 0; i < l; i++) { chr1 = *w1++; w2 = utf8_get_char(w2, &chr2); if (chr1-chr2) return chr1-chr2; }
|
|
}
|
|
return 0;
|
|
case ENC_WCHAR:
|
|
{
|
|
int chr1, chr2;
|
|
wchar_t *w2 = s2;
|
|
for (i = 0; i < l; i++) { chr1 = *w1++; chr2 = *w2++; if (chr1-chr2) return chr1-chr2; }
|
|
}
|
|
return 0;
|
|
default:
|
|
Yap_Error(SYSTEM_ERROR, TermNil, "Unsupported Encoding ~s in %s", enc_name(enc2), __FUNCTION__);
|
|
}
|
|
}
|
|
case ENC_ISO_UTF8:
|
|
{
|
|
char *w1 = (char *)s1;
|
|
switch (enc2) {
|
|
case ENC_ISO_LATIN1:
|
|
{
|
|
int chr1, chr2;
|
|
char *w2 = s2;
|
|
for (i = 0; i < l; i++) { chr2 = *w2++; w1 = utf8_get_char(w1, &chr1); if (chr1-chr2) return chr1-chr2; }
|
|
}
|
|
return 0;
|
|
case ENC_ISO_UTF8:
|
|
{
|
|
int chr1, chr2;
|
|
char *w2 = s2;
|
|
for (i = 0; i < l; i++) { w2 = utf8_get_char(w2, &chr2); w1 = utf8_get_char(w1, &chr1); if (chr1-chr2) return chr1-chr2; }
|
|
}
|
|
return 0;
|
|
case ENC_WCHAR:
|
|
{
|
|
int chr1, chr2;
|
|
wchar_t *w2 = s2;
|
|
for (i = 0; i < l; i++) { chr2 = *w2++; w1 = utf8_get_char(w1, &chr1); if (chr1-chr2) return chr1-chr2; }
|
|
}
|
|
return 0;
|
|
default:
|
|
Yap_Error(SYSTEM_ERROR, TermNil, "Unsupported Encoding ~s in %s", enc_name(enc2), __FUNCTION__);
|
|
}
|
|
}
|
|
case ENC_WCHAR:
|
|
{
|
|
wchar_t *w1 = (wchar_t *)s1;
|
|
switch (enc2) {
|
|
case ENC_ISO_LATIN1:
|
|
{
|
|
int chr1, chr2;
|
|
char *w2 = s2;
|
|
for (i = 0; i < l; i++) { chr1 = *w1++; chr2 = *w2++; if (chr1-chr2) return chr1-chr2; }
|
|
}
|
|
return 0;
|
|
case ENC_ISO_UTF8:
|
|
{
|
|
int chr1, chr2;
|
|
char *w2 = s2;
|
|
for (i = 0; i < l; i++) { chr1 = *w1++; w2 = utf8_get_char(w2, &chr2); if (chr1-chr2) return chr1-chr2; }
|
|
}
|
|
return 0;
|
|
case ENC_WCHAR:
|
|
return wcsncmp(s1, s2, l);
|
|
default:
|
|
Yap_Error(SYSTEM_ERROR, TermNil, "Unsupported Encoding ~s in %s", enc_name(enc2), __FUNCTION__);
|
|
}
|
|
}
|
|
default:
|
|
Yap_Error(SYSTEM_ERROR, TermNil, "Unsupported Encoding ~s in %s", enc_name(enc1), __FUNCTION__);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void *
|
|
concat( int n, seq_tv_t *out, void *sv[], encoding_t encv[], size_t lengv[] USES_REGS )
|
|
{
|
|
if (out->type == YAP_STRING_STRING) {
|
|
/* we assume we concatenate strings only, or ASCII stuff like numbers */
|
|
Term t = init_tstring( PASS_REGS1 );
|
|
char *buf = buf_from_tstring(HR);
|
|
int i;
|
|
for (i = 0; i < n; i++) {
|
|
if (encv[i] == ENC_WCHAR) {
|
|
wchar_t *ptr = sv[i];
|
|
int chr;
|
|
while ( (chr = *ptr++) ) buf = utf8_put_char(buf, chr);
|
|
} else if (encv[i] == ENC_ISO_LATIN1) {
|
|
char *ptr = sv[i];
|
|
int chr;
|
|
while ( (chr = *ptr++) ) buf = utf8_put_char(buf, chr);
|
|
} else {
|
|
char *ptr = sv[i];
|
|
int chr;
|
|
while ( (chr = *ptr++) ) *buf++ = chr;
|
|
}
|
|
}
|
|
*buf ++ = '\0';
|
|
close_tstring( buf PASS_REGS );
|
|
out->val.t = t;
|
|
return HR;
|
|
} else {
|
|
encoding_t enc = ENC_ISO_LATIN1;
|
|
size_t sz = 0;
|
|
|
|
int i;
|
|
for (i = 0; i < n; i++) {
|
|
if (encv[i] != ENC_ISO_LATIN1) {
|
|
enc = ENC_WCHAR;
|
|
}
|
|
sz += write_length(sv[i], out, encv[i], FALSE, lengv[i] PASS_REGS);
|
|
}
|
|
if (enc == ENC_WCHAR) {
|
|
/* wide atom */
|
|
wchar_t *buf = (wchar_t *)HR;
|
|
Atom at;
|
|
Term t = ARG1;
|
|
LOCAL_ERROR( sz+3 );
|
|
for (i = 0; i < n ; i ++) {
|
|
if (encv[i] == ENC_WCHAR) {
|
|
wchar_t *ptr = sv[i];
|
|
int chr;
|
|
while ( (chr = *ptr++) != '\0' ) *buf++ = chr;
|
|
} else if (encv[i] == ENC_ISO_LATIN1) {
|
|
char *ptr = sv[i];
|
|
int chr;
|
|
while ( (chr = *ptr++) != '\0' ) *buf++ = (unsigned char)chr;
|
|
} else {
|
|
char *ptr = sv[i];
|
|
int chr;
|
|
while ( (ptr = utf8_get_char( ptr, &chr )) != NULL ) { if (chr == '\0') break; else *buf++ = chr; }
|
|
}
|
|
}
|
|
*buf++ = '\0';
|
|
at = out->val.a = Yap_LookupWideAtom((wchar_t *)HR);
|
|
return at;
|
|
} else {
|
|
/* atom */
|
|
char *buf = (char *)HR;
|
|
Atom at;
|
|
Term t = ARG1;
|
|
|
|
LOCAL_TERM_ERROR( sz/sizeof(CELL)+3 );
|
|
for (i = 0; i < n ; i ++) {
|
|
char *ptr = sv[i];
|
|
int chr;
|
|
while ( (chr = *ptr++) != '\0' ) *buf++ = chr;
|
|
}
|
|
*buf++ = '\0';
|
|
at = out->val.a = Yap_LookupAtom((const char *)HR);
|
|
return at;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void *
|
|
slice( size_t min, size_t max, void *buf, seq_tv_t *out, encoding_t enc USES_REGS )
|
|
{
|
|
if (out->type == YAP_STRING_STRING) {
|
|
/* we assume we concatenate strings only, or ASCII stuff like numbers */
|
|
Term t = init_tstring( PASS_REGS1 );
|
|
char *nbuf = buf_from_tstring(HR);
|
|
if (enc == ENC_WCHAR) {
|
|
wchar_t *ptr = (wchar_t *)buf + min;
|
|
int chr;
|
|
while ( min++ < max ) { chr = *ptr++; nbuf = utf8_put_char(nbuf, chr); }
|
|
} else if (enc == ENC_ISO_LATIN1) {
|
|
char *ptr = (char *)buf + min;
|
|
int chr;
|
|
while ( min++ < max ) { chr = *ptr++; nbuf = utf8_put_char(nbuf, chr); }
|
|
} else {
|
|
const char *ptr = utf8_skip ( (const char *)buf, min );
|
|
int chr;
|
|
if (!ptr) return NULL;
|
|
while ( min++ < max ) { ptr = utf8_get_char(ptr, & chr); nbuf = utf8_put_char(nbuf, chr); }
|
|
}
|
|
*nbuf ++ = '\0';
|
|
close_tstring( nbuf PASS_REGS );
|
|
out->val.t = t;
|
|
return (void *)StringOfTerm(t);
|
|
} else {
|
|
Atom at;
|
|
/* atom */
|
|
if (enc == ENC_WCHAR) {
|
|
/* wide atom */
|
|
wchar_t *nbuf = (wchar_t *)HR;
|
|
Term t = TermNil;
|
|
wchar_t *ptr = (wchar_t *)buf + min;
|
|
if (max>min) {
|
|
LOCAL_ERROR( (max-min)*sizeof(wchar_t) );
|
|
memcpy( nbuf, ptr, (max - min)*sizeof(wchar_t));
|
|
}
|
|
nbuf[max-min] = '\0';
|
|
at = Yap_LookupMaybeWideAtom( nbuf );
|
|
} else if (enc == ENC_ISO_LATIN1) {
|
|
/* atom */
|
|
char *nbuf = (char *)HR;
|
|
|
|
if (max>min) {
|
|
Term t = TermNil;
|
|
char *ptr = (char *)buf + min;
|
|
LOCAL_ERROR( max-min );
|
|
memcpy( nbuf, ptr, (max - min));
|
|
}
|
|
nbuf[max-min] = '\0';
|
|
at = Yap_LookupAtom( nbuf );
|
|
} else {
|
|
/* atom */
|
|
wchar_t *nbuf = (wchar_t *)HR;
|
|
Term t = ARG1;
|
|
const char *ptr = utf8_skip ( (const char *)buf, min );
|
|
int chr;
|
|
|
|
LOCAL_ERROR( max-min );
|
|
while ( min++ < max ) { ptr = utf8_get_char(ptr, & chr); *nbuf++ = chr; }
|
|
nbuf[0] = '\0';
|
|
at = Yap_LookupMaybeWideAtom( (wchar_t*)HR );
|
|
}
|
|
out->val.a = at;
|
|
return at->StrOfAE;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
//
|
|
// Out must be an atom or a string
|
|
void *
|
|
Yap_Concat_Text( int n, seq_tv_t inp[], seq_tv_t *out USES_REGS)
|
|
{
|
|
encoding_t * encv;
|
|
void **bufv;
|
|
int minimal = FALSE;
|
|
void *buf;
|
|
size_t leng, *lengv;
|
|
int i;
|
|
Term t = ARG1;
|
|
bufv = (void **)malloc(n*sizeof(void *));
|
|
HEAP_TERM_ERROR(bufv, void *);
|
|
encv = (encoding_t *)malloc(n*sizeof(encoding_t));
|
|
HEAP_ERROR(encv, encoding_t);
|
|
buf = NULL;
|
|
for (i = 0 ; i < n ; i++) {
|
|
void *nbuf = Yap_readText( buf, inp+i, encv+i, &minimal, &leng PASS_REGS );
|
|
|
|
if (!nbuf)
|
|
return 0L;
|
|
bufv[i] = nbuf;
|
|
if ((char *)nbuf >= AuxBase && (char *)nbuf < AuxTop) {
|
|
buf = compute_end( nbuf, encv[i] );
|
|
}
|
|
}
|
|
lengv = (size_t *)malloc(n*sizeof(size_t));
|
|
HEAP_ERROR(lengv, size_t);
|
|
buf = concat(n, out, bufv, encv, lengv PASS_REGS);
|
|
return buf;
|
|
}
|
|
|
|
//
|
|
// out must be an atom or a string
|
|
void *
|
|
Yap_Splice_Text( int n, size_t cuts[], seq_tv_t *inp, encoding_t encv[], seq_tv_t outv[] USES_REGS)
|
|
{
|
|
encoding_t enc;
|
|
int minimal = FALSE;
|
|
void *buf, *store;
|
|
size_t l, leng;
|
|
int i, min;
|
|
|
|
buf = Yap_readText( NULL, inp, &enc, &minimal, &leng PASS_REGS );
|
|
if (!buf)
|
|
return NULL;
|
|
l = write_length( buf, inp, enc, minimal, leng PASS_REGS);
|
|
/* where to allocate next is the most complicated part */
|
|
if ((char *)buf >= AuxBase && (char *)buf < AuxTop) {
|
|
store = compute_end( buf, enc );
|
|
} else {
|
|
store = NULL;
|
|
}
|
|
|
|
|
|
if (!cuts) {
|
|
if (n == 2) {
|
|
size_t l0, l1;
|
|
size_t leng0, leng1;
|
|
encoding_t enc0, enc1;
|
|
int minimal0, minimal1;
|
|
void *buf0, *buf1;
|
|
|
|
if (outv[0].val.t) {
|
|
buf0 = Yap_readText( store, outv, &enc0, &minimal0, &leng0 PASS_REGS );
|
|
if (!buf0)
|
|
return NULL;
|
|
l0 = write_length( buf0, outv, enc, minimal0, leng0 PASS_REGS);
|
|
if (cmp_Text( buf, buf0, l0, enc, enc0) != 0)
|
|
return NULL;
|
|
|
|
l1 = l-l0;
|
|
|
|
buf1 = slice(l0, l, buf, outv+1, enc PASS_REGS);
|
|
if (encv)
|
|
encv[1] = enc;
|
|
return buf1;
|
|
} else /* if (outv[1].val.t) */ {
|
|
buf1 = Yap_readText( store, outv+1, &enc1, &minimal1, &leng1 PASS_REGS );
|
|
if (!buf1)
|
|
return NULL;
|
|
l1 = write_length( buf1, outv+1, enc1, minimal1, leng1 PASS_REGS);
|
|
if (l < l1) return NULL;
|
|
l0 = l-l1;
|
|
if (cmp_Text( advance_Text(buf, l0, enc), buf1, l1, enc, enc1) != 0)
|
|
return NULL;
|
|
buf0 = slice(0, l0, buf, outv, enc PASS_REGS);
|
|
if (encv)
|
|
encv[0] = enc;
|
|
return buf0;
|
|
}
|
|
}
|
|
}
|
|
for (i = 0; i < n; i++) {
|
|
if (i == 0) min = 0;
|
|
else min = cuts[i-1];
|
|
slice(min, cuts[i], buf, outv+i, enc PASS_REGS);
|
|
if (!(outv[i].val.a))
|
|
return NULL;
|
|
if (encv)
|
|
encv[i] = enc;
|
|
}
|
|
return (void *)outv;;
|
|
}
|