908 lines
25 KiB
C
908 lines
25 KiB
C
/*************************************************************************
|
|
* *
|
|
* YAP Prolog *
|
|
* *
|
|
* Yap Prolog was developed at NCCUP - Universidade do Porto *
|
|
* *
|
|
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
|
|
* *
|
|
**************************************************************************
|
|
* *
|
|
* File: charcodes.c *
|
|
* Last rev: 5/2/88 *
|
|
* mods: *
|
|
* comments: Character codes and character conversion *
|
|
* *
|
|
*************************************************************************/
|
|
#ifdef SCCS
|
|
static char SccsId[] = "%W% %G%";
|
|
#endif
|
|
/*
|
|
* This file includes the definition of a pipe related IO.
|
|
*
|
|
*/
|
|
|
|
#include "Yap.h"
|
|
#include "Yatom.h"
|
|
#include "YapHeap.h"
|
|
#include "yapio.h"
|
|
#include "YapText.h"
|
|
#include <stdlib.h>
|
|
#if HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
#if HAVE_STDARG_H
|
|
#include <stdarg.h>
|
|
#endif
|
|
#if HAVE_CTYPE_H
|
|
#include <ctype.h>
|
|
#endif
|
|
#if HAVE_WCTYPE_H
|
|
#include <wctype.h>
|
|
#endif
|
|
#ifdef _WIN32
|
|
#if HAVE_IO_H
|
|
/* Windows */
|
|
#include <io.h>
|
|
#endif
|
|
#if HAVE_SOCKET
|
|
#include <winsock2.h>
|
|
#endif
|
|
#include <windows.h>
|
|
#ifndef S_ISDIR
|
|
#define S_ISDIR(x) (((x)&_S_IFDIR) == _S_IFDIR)
|
|
#endif
|
|
#endif
|
|
#include "iopreds.h"
|
|
#include "eval.h"
|
|
|
|
static Int p_change_type_of_char(USES_REGS1);
|
|
|
|
Term Yap_StringToNumberTerm(char *s, encoding_t *encp) {
|
|
CACHE_REGS
|
|
int sno;
|
|
Term t;
|
|
|
|
sno = Yap_open_buf_read_stream(s, strlen(s), encp, MEM_BUF_USER);
|
|
if (sno < 0)
|
|
return FALSE;
|
|
if (encp)
|
|
GLOBAL_Stream[sno].encoding = *encp;
|
|
else
|
|
GLOBAL_Stream[sno].encoding = LOCAL_encoding;
|
|
while (*s && iswblank(*s++))
|
|
;
|
|
t = Yap_scan_num(GLOBAL_Stream + sno);
|
|
if (LOCAL_Error_TYPE == SYNTAX_ERROR)
|
|
LOCAL_Error_TYPE = YAP_NO_ERROR;
|
|
Yap_CloseStream(sno);
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return t;
|
|
}
|
|
|
|
const char *encvs[] = {"LANG", "LC_ALL", "LC_CTYPE", NULL};
|
|
|
|
// wher we can fins an encoding
|
|
typedef struct enc_map {
|
|
const char *s;
|
|
encoding_t e;
|
|
} enc_map_t;
|
|
|
|
static enc_map_t ematches[] = {
|
|
{"UTF-8", ENC_ISO_UTF8},
|
|
{"utf8", ENC_ISO_UTF8},
|
|
{"UTF-16", ENC_UTF16_LE}, // ok, this is a very bad name
|
|
{"UCS-2", ENC_UTF16_LE}, // ok, this is probably gone by now
|
|
{"ISO-LATIN1", ENC_ISO_LATIN1},
|
|
{"ISO-8859-1", ENC_ISO_LATIN1},
|
|
{"Windows-1252", ENC_ISO_LATIN1}, // almost, but not quite
|
|
{"CP-1252", ENC_ISO_LATIN1},
|
|
{"C", ENC_ISO_ASCII},
|
|
{NULL, ENC_OCTET}};
|
|
|
|
static encoding_t DefaultEncoding(void) {
|
|
encoding_t rc;
|
|
int i = 0, j;
|
|
char *enc;
|
|
while (encvs[i]) {
|
|
char *v = getenv(encvs[i]);
|
|
if (v) {
|
|
enc = strrchr(v, '.');
|
|
/* that's how it is supposed to be, except in OSX */
|
|
if (!enc)
|
|
enc = v;
|
|
else
|
|
enc++;
|
|
// now that we have one name, try to match it
|
|
j = 0;
|
|
while (ematches[j].s) {
|
|
if (!strcmp(ematches[j].s, enc))
|
|
return ematches[j].e;
|
|
j++;
|
|
}
|
|
}
|
|
i++;
|
|
}
|
|
// by default, return UTF-8
|
|
// except in _WIN32
|
|
#ifdef _WIN32
|
|
rc = ENC_UTF16_BE;
|
|
#else
|
|
rc = ENC_ISO_UTF8;
|
|
#endif
|
|
{
|
|
int j = 0;
|
|
while (rc != ematches[j].e)
|
|
j++;
|
|
Yap_Warning("YAP will use default encoding %s", ematches[j].s);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
encoding_t Yap_DefaultEncoding(void) {
|
|
CACHE_REGS
|
|
return LOCAL_encoding;
|
|
}
|
|
|
|
void Yap_SetDefaultEncoding(encoding_t new_encoding) {
|
|
CACHE_REGS
|
|
LOCAL_encoding = new_encoding;
|
|
}
|
|
|
|
static Int get_default_encoding(USES_REGS1) {
|
|
Term out = MkIntegerTerm(Yap_DefaultEncoding());
|
|
return Yap_unify(ARG1, out);
|
|
}
|
|
|
|
static Int p_encoding(USES_REGS1) { /* '$encoding'(Stream,N) */
|
|
int sno =
|
|
Yap_CheckStream(ARG1, Input_Stream_f | Output_Stream_f, "encoding/2");
|
|
Term t = Deref(ARG2);
|
|
if (sno < 0)
|
|
return FALSE;
|
|
if (IsVarTerm(t)) {
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return Yap_unify(ARG2, MkIntegerTerm(GLOBAL_Stream[sno].encoding));
|
|
}
|
|
GLOBAL_Stream[sno].encoding = IntegerOfTerm(Deref(ARG2));
|
|
UNLOCK(GLOBAL_Stream[sno].streamlock);
|
|
return TRUE;
|
|
}
|
|
|
|
static int get_char(Term t) {
|
|
if (IsVarTerm(t = Deref(t))) {
|
|
Yap_Error(INSTANTIATION_ERROR, t, NULL);
|
|
return 0;
|
|
}
|
|
if (!IsAtomTerm(t)) {
|
|
Yap_Error(REPRESENTATION_ERROR_CHARACTER, t, NULL);
|
|
return 0;
|
|
}
|
|
Atom at = AtomOfTerm(t);
|
|
if (IsWideAtom(at)) {
|
|
wchar_t *s0 = RepAtom(AtomOfTerm(t))->WStrOfAE;
|
|
if (s0[1] != '\0') {
|
|
Yap_Error(REPRESENTATION_ERROR_CHARACTER, t, NULL);
|
|
return 0;
|
|
}
|
|
return s0[0];
|
|
} else {
|
|
char *s0 = RepAtom(AtomOfTerm(t))->StrOfAE;
|
|
if (s0[1] != '\0') {
|
|
Yap_Error(REPRESENTATION_ERROR_CHARACTER, t, NULL);
|
|
return 0;
|
|
}
|
|
return s0[0];
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int get_code(Term t) {
|
|
if (IsVarTerm(t = Deref(t))) {
|
|
Yap_Error(INSTANTIATION_ERROR, t, NULL);
|
|
return 0;
|
|
}
|
|
if (!IsIntegerTerm(t)) {
|
|
Yap_Error(TYPE_ERROR_CHARACTER_CODE, t, NULL);
|
|
return 0;
|
|
}
|
|
Int ch = IntegerOfTerm(t);
|
|
if (ch < -1) {
|
|
Yap_Error(REPRESENTATION_ERROR_CHARACTER_CODE, t, NULL);
|
|
return 0;
|
|
}
|
|
return ch;
|
|
}
|
|
|
|
static int get_char_or_code(Term t, bool *is_char) {
|
|
if (!IsAtomTerm(t)) {
|
|
if (!IsIntegerTerm(t)) {
|
|
Yap_Error(TYPE_ERROR_CHARACTER, t, NULL);
|
|
return 0;
|
|
}
|
|
Int ch = IntegerOfTerm(t);
|
|
if (ch < -1) {
|
|
Yap_Error(REPRESENTATION_ERROR_CHARACTER_CODE, t, NULL);
|
|
return 0;
|
|
}
|
|
*is_char = false;
|
|
return ch;
|
|
}
|
|
Atom at = AtomOfTerm(t);
|
|
if (IsWideAtom(at)) {
|
|
wchar_t *s0 = RepAtom(AtomOfTerm(t))->WStrOfAE;
|
|
if (s0[1] != '\0') {
|
|
Yap_Error(REPRESENTATION_ERROR_CHARACTER, t, NULL);
|
|
return 0;
|
|
}
|
|
*is_char = true;
|
|
return s0[0];
|
|
} else {
|
|
char *s0 = RepAtom(AtomOfTerm(t))->StrOfAE;
|
|
if (s0[1] != '\0') {
|
|
Yap_Error(REPRESENTATION_ERROR_CHARACTER, t, NULL);
|
|
return 0;
|
|
}
|
|
*is_char = true;
|
|
return s0[0];
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static Int toupper2(USES_REGS1) {
|
|
bool is_char = false;
|
|
Term t;
|
|
if (!IsVarTerm(t = Deref(ARG1))) {
|
|
Int out = get_char_or_code(t, &is_char), uout;
|
|
if (out < 128)
|
|
uout = toupper(out);
|
|
else
|
|
uout = towupper(out);
|
|
if (is_char)
|
|
return Yap_unify(ARG2, MkCharTerm(uout));
|
|
else
|
|
return Yap_unify(ARG2, MkIntegerTerm(uout));
|
|
} else if (!IsVarTerm(t = Deref(ARG2))) {
|
|
Int uout = get_char_or_code(t, &is_char), out;
|
|
char_kind_t charp = Yap_wide_chtype(uout);
|
|
if (charp == UC) {
|
|
if (uout < 128)
|
|
out = tolower(uout);
|
|
else
|
|
out = towlower(uout);
|
|
} else if (charp == LC) {
|
|
return false;
|
|
} else {
|
|
out = uout;
|
|
}
|
|
if (is_char)
|
|
return Yap_unify(ARG2, MkCharTerm(out));
|
|
else
|
|
return Yap_unify(ARG2, MkIntegerTerm(out));
|
|
} else {
|
|
Yap_Error(INSTANTIATION_ERROR, ARG1, NULL);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static Int tolower2(USES_REGS1) {
|
|
bool is_char = false;
|
|
Term t;
|
|
if (!IsVarTerm(t = Deref(ARG1))) {
|
|
bool is_char = false;
|
|
Int out = get_char_or_code(ARG1, &is_char), uout;
|
|
if (out < 128)
|
|
uout = tolower(out);
|
|
else
|
|
uout = towlower(out);
|
|
if (is_char)
|
|
return Yap_unify(ARG2, MkCharTerm(uout));
|
|
else
|
|
return Yap_unify(ARG2, MkIntegerTerm(uout));
|
|
} else if (IsVarTerm(t = Deref(ARG2))) {
|
|
Int uout = get_char_or_code(t, &is_char), out;
|
|
char_kind_t charp = Yap_wide_chtype(uout);
|
|
if (charp == LC) {
|
|
if (uout < 128)
|
|
out = toupper(uout);
|
|
else
|
|
out = towupper(uout);
|
|
} else if (charp == UC) {
|
|
return false;
|
|
} else {
|
|
out = uout;
|
|
}
|
|
if (is_char)
|
|
return Yap_unify(ARG2, MkCharTerm(out));
|
|
else
|
|
return Yap_unify(ARG2, MkIntegerTerm(out));
|
|
} else {
|
|
Yap_Error(INSTANTIATION_ERROR, ARG1, NULL);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static Int
|
|
p_change_type_of_char(USES_REGS1) { /* change_type_of_char(+char,+type) */
|
|
Term t1 = Deref(ARG1);
|
|
Term t2 = Deref(ARG2);
|
|
if (!IsVarTerm(t1) && !IsIntegerTerm(t1))
|
|
return FALSE;
|
|
if (!IsVarTerm(t2) && !IsIntegerTerm(t2))
|
|
return FALSE;
|
|
Yap_chtype[IntegerOfTerm(t1)] = IntegerOfTerm(t2);
|
|
return TRUE;
|
|
}
|
|
|
|
static Int char_type_alnum(USES_REGS1) {
|
|
int ch = get_char(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == UC || k == LC || k == NU;
|
|
}
|
|
|
|
static Int char_type_alpha(USES_REGS1) {
|
|
int ch = get_char(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == UC || k == LC;
|
|
}
|
|
|
|
static Int char_type_csym(USES_REGS1) {
|
|
int ch = get_char(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k >= UC && k <= NU;
|
|
}
|
|
|
|
static Int char_type_csymf(USES_REGS1) {
|
|
int ch = get_char(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k >= UC && k <= LC;
|
|
}
|
|
|
|
static Int char_type_ascii(USES_REGS1) {
|
|
int ch = get_char(ARG1);
|
|
return isascii(ch);
|
|
}
|
|
|
|
static Int char_type_white(USES_REGS1) {
|
|
int ch = get_char(ARG1);
|
|
if (ch < 256) {
|
|
char_kind_t k = Yap_chtype[ch];
|
|
return k == BS;
|
|
}
|
|
utf8proc_category_t ct = utf8proc_category(ch);
|
|
return ct == UTF8PROC_CATEGORY_ZS;
|
|
}
|
|
|
|
static Int char_type_cntrl(USES_REGS1) {
|
|
Int ch = get_char(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == BG;
|
|
}
|
|
|
|
static Int char_type_digit(USES_REGS1) {
|
|
Int ch = get_char(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == NU;
|
|
}
|
|
|
|
static Int char_type_xdigit(USES_REGS1) {
|
|
Int ch = get_char(ARG1);
|
|
#if HAVE_ISWXDIGIT
|
|
return iswxdigit(ch);
|
|
#elif HAVE_ISWHEXNUMBER
|
|
return iswhexnumber(ch);
|
|
#else
|
|
return iswdigit(ch) || ((ch >= 'a' && ch <= 'f') && (ch >= 'A' && ch <= 'F'));
|
|
#endif
|
|
}
|
|
|
|
static Int char_type_graph(USES_REGS1) {
|
|
Int ch = get_char(ARG1);
|
|
return iswgraph(ch);
|
|
}
|
|
|
|
static Int char_type_lower(USES_REGS1) {
|
|
int ch = get_char(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == LC;
|
|
}
|
|
|
|
static Int char_type_upper(USES_REGS1) {
|
|
int ch = get_char(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == UC;
|
|
}
|
|
|
|
static Int char_type_punct(USES_REGS1) {
|
|
int ch = get_char(ARG1);
|
|
if (ch < 256) {
|
|
char_kind_t k = Yap_chtype[ch];
|
|
return k >= QT && k <= BK;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static Int char_type_space(USES_REGS1) {
|
|
int ch = get_char(ARG1);
|
|
if (ch < 256) {
|
|
char_kind_t k = Yap_chtype[ch];
|
|
return k == BS;
|
|
}
|
|
utf8proc_category_t ct = utf8proc_category(ch);
|
|
return (ct >= UTF8PROC_CATEGORY_ZS && ct <= UTF8PROC_CATEGORY_PO);
|
|
}
|
|
|
|
static Int char_type_end_of_file(USES_REGS1) {
|
|
Int ch = get_char(ARG1);
|
|
return ch == WEOF || ch == -1;
|
|
}
|
|
|
|
static Int char_type_end_of_line(USES_REGS1) {
|
|
Int ch = get_char(ARG1);
|
|
if (ch < 256) {
|
|
return ch >= 10 && ch <= 13;
|
|
}
|
|
utf8proc_category_t ct = utf8proc_category(ch);
|
|
return (ct >= UTF8PROC_CATEGORY_ZL && ct <= UTF8PROC_CATEGORY_ZP);
|
|
}
|
|
|
|
static Int char_type_newline(USES_REGS1) {
|
|
Int ch = get_char(ARG1);
|
|
if (ch < 256) {
|
|
return ch == 10;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static Int char_type_period(USES_REGS1) {
|
|
Int ch = get_char(ARG1);
|
|
return ch == '.' || ch == '!' || ch == '?';
|
|
}
|
|
|
|
static Int char_type_quote(USES_REGS1) {
|
|
Int ch = get_char(ARG1);
|
|
utf8proc_category_t ct = utf8proc_category(ch);
|
|
return ct == UTF8PROC_CATEGORY_PI || ct == UTF8PROC_CATEGORY_PF;
|
|
}
|
|
|
|
static Int char_type_paren(USES_REGS1) {
|
|
Int ch = get_char(ARG1);
|
|
utf8proc_category_t ct = utf8proc_category(ch);
|
|
return ct == UTF8PROC_CATEGORY_PS || ct == UTF8PROC_CATEGORY_PE;
|
|
}
|
|
|
|
static Int char_type_prolog_var_start(USES_REGS1) {
|
|
Int ch = get_char(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == LC || ch == '_';
|
|
}
|
|
|
|
static Int char_type_prolog_atom_start(USES_REGS1) {
|
|
Int ch = get_char(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == UC;
|
|
}
|
|
|
|
static Int char_type_prolog_identifier_continue(USES_REGS1) {
|
|
int ch = get_char(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k >= UC && k <= NU;
|
|
}
|
|
|
|
static Int char_type_prolog_prolog_symbol(USES_REGS1) {
|
|
int ch = get_char(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == SL && k == SY;
|
|
}
|
|
|
|
static Int code_type_alnum(USES_REGS1) {
|
|
int ch = get_code(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == UC || k == LC || k == NU;
|
|
}
|
|
|
|
static Int code_type_alpha(USES_REGS1) {
|
|
int ch = get_code(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == UC || k == LC;
|
|
}
|
|
|
|
static Int code_type_csym(USES_REGS1) {
|
|
int ch = get_code(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k >= UC && k <= NU;
|
|
}
|
|
|
|
static Int code_type_csymf(USES_REGS1) {
|
|
int ch = get_code(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k >= UC && k <= LC;
|
|
}
|
|
|
|
static Int code_type_ascii(USES_REGS1) {
|
|
int ch = get_code(ARG1);
|
|
return isascii(ch);
|
|
}
|
|
|
|
static Int code_type_white(USES_REGS1) {
|
|
int ch = get_code(ARG1);
|
|
if (ch < 256) {
|
|
char_kind_t k = Yap_chtype[ch];
|
|
return k == BS;
|
|
}
|
|
utf8proc_category_t ct = utf8proc_category(ch);
|
|
return ct == UTF8PROC_CATEGORY_ZS;
|
|
}
|
|
|
|
static Int code_type_cntrl(USES_REGS1) {
|
|
Int ch = get_code(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == BG;
|
|
}
|
|
|
|
static Int code_type_digit(USES_REGS1) {
|
|
Int ch = get_code(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == NU;
|
|
}
|
|
|
|
static Int code_type_xdigit(USES_REGS1) {
|
|
Int ch = get_code(ARG1);
|
|
#if HAVE_ISWXDIGIT
|
|
return iswxdigit(ch);
|
|
#elif HAVE_ISWHEXNUMBER
|
|
return iswhexnumber(ch);
|
|
#else
|
|
return iswdigit(ch) || ((ch >= 'a' && ch <= 'f') && (ch >= 'A' && ch <= 'F'));
|
|
#endif
|
|
}
|
|
|
|
static Int code_type_graph(USES_REGS1) {
|
|
Int ch = get_code(ARG1);
|
|
return iswgraph(ch);
|
|
}
|
|
|
|
static Int code_type_lower(USES_REGS1) {
|
|
int ch = get_code(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == LC;
|
|
}
|
|
|
|
static Int code_type_upper(USES_REGS1) {
|
|
int ch = get_code(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == UC;
|
|
}
|
|
|
|
static Int code_type_punct(USES_REGS1) {
|
|
int ch = get_char(ARG1);
|
|
if (ch < 256) {
|
|
char_kind_t k = Yap_chtype[ch];
|
|
return k >= QT && k <= BK;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static Int code_type_space(USES_REGS1) {
|
|
int ch = get_code(ARG1);
|
|
if (ch < 256) {
|
|
char_kind_t k = Yap_chtype[ch];
|
|
return k == BS;
|
|
}
|
|
utf8proc_category_t ct = utf8proc_category(ch);
|
|
return (ct >= UTF8PROC_CATEGORY_ZS && ct <= UTF8PROC_CATEGORY_PO);
|
|
}
|
|
|
|
static Int code_type_end_of_file(USES_REGS1) {
|
|
Int ch = get_code(ARG1);
|
|
return ch == WEOF || ch == -1;
|
|
}
|
|
|
|
static Int code_type_end_of_line(USES_REGS1) {
|
|
Int ch = get_code(ARG1);
|
|
if (ch < 256) {
|
|
return ch >= 10 && ch <= 13;
|
|
}
|
|
utf8proc_category_t ct = utf8proc_category(ch);
|
|
return (ct >= UTF8PROC_CATEGORY_ZL && ct <= UTF8PROC_CATEGORY_ZP);
|
|
}
|
|
|
|
static Int code_type_newline(USES_REGS1) {
|
|
Int ch = get_code(ARG1);
|
|
if (ch < 256) {
|
|
return ch == 10;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static Int code_type_period(USES_REGS1) {
|
|
Int ch = get_code(ARG1);
|
|
return ch == '.' || ch == '!' || ch == '?';
|
|
}
|
|
|
|
static Int code_type_quote(USES_REGS1) {
|
|
Int ch = get_code(ARG1);
|
|
utf8proc_category_t ct = utf8proc_category(ch);
|
|
return ct == UTF8PROC_CATEGORY_PI || ct == UTF8PROC_CATEGORY_PF;
|
|
}
|
|
|
|
static Int code_type_paren(USES_REGS1) {
|
|
Int ch = get_code(ARG1);
|
|
utf8proc_category_t ct = utf8proc_category(ch);
|
|
return ct == UTF8PROC_CATEGORY_PS || ct == UTF8PROC_CATEGORY_PE;
|
|
}
|
|
|
|
static Int code_type_prolog_var_start(USES_REGS1) {
|
|
Int ch = get_code(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == LC || ch == '_';
|
|
}
|
|
|
|
static Int code_type_prolog_atom_start(USES_REGS1) {
|
|
Int ch = get_code(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == UC;
|
|
}
|
|
|
|
static Int code_type_prolog_identifier_continue(USES_REGS1) {
|
|
int ch = get_code(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k >= UC && k <= NU;
|
|
}
|
|
|
|
static Int code_type_prolog_prolog_symbol(USES_REGS1) {
|
|
int ch = get_code(ARG1);
|
|
char_kind_t k = Yap_wide_chtype(ch);
|
|
return k == SL && k == SY;
|
|
}
|
|
|
|
int ISOWGetc(int sno) {
|
|
int ch = GLOBAL_Stream[sno].stream_wgetc(sno);
|
|
if (ch != EOF && GLOBAL_CharConversionTable != NULL) {
|
|
|
|
if (ch < NUMBER_OF_CHARS) {
|
|
/* only do this in ASCII */
|
|
return GLOBAL_CharConversionTable[ch];
|
|
}
|
|
}
|
|
return ch;
|
|
}
|
|
|
|
static Int p_force_char_conversion(USES_REGS1) {
|
|
int i;
|
|
|
|
/* don't actually enable it until someone tries to add a conversion */
|
|
if (GLOBAL_CharConversionTable2 == NULL)
|
|
return (TRUE);
|
|
for (i = 0; i < MaxStreams; i++) {
|
|
if (!(GLOBAL_Stream[i].status & Free_Stream_f))
|
|
GLOBAL_Stream[i].stream_wgetc_for_read = ISOWGetc;
|
|
}
|
|
GLOBAL_CharConversionTable = GLOBAL_CharConversionTable2;
|
|
return (TRUE);
|
|
}
|
|
|
|
static Int p_disable_char_conversion(USES_REGS1) {
|
|
int i;
|
|
|
|
for (i = 0; i < MaxStreams; i++) {
|
|
if (!(GLOBAL_Stream[i].status & Free_Stream_f))
|
|
GLOBAL_Stream[i].stream_wgetc_for_read = GLOBAL_Stream[i].stream_wgetc;
|
|
}
|
|
GLOBAL_CharConversionTable = NULL;
|
|
return (TRUE);
|
|
}
|
|
|
|
static Int char_conversion(USES_REGS1) {
|
|
Term t = Deref(ARG1), t1 = Deref(ARG2);
|
|
unsigned char *s0, *s1;
|
|
|
|
if (IsVarTerm(t)) {
|
|
Yap_Error(INSTANTIATION_ERROR, t, "char_conversion/2");
|
|
return (FALSE);
|
|
}
|
|
if (!IsAtomTerm(t)) {
|
|
Yap_Error(REPRESENTATION_ERROR_CHARACTER, t, "char_conversion/2");
|
|
return (FALSE);
|
|
}
|
|
s0 = RepAtom(AtomOfTerm(t))->UStrOfAE;
|
|
if (s0[1] != '\0') {
|
|
Yap_Error(REPRESENTATION_ERROR_CHARACTER, t, "char_conversion/2");
|
|
return (FALSE);
|
|
}
|
|
if (IsVarTerm(t1)) {
|
|
Yap_Error(INSTANTIATION_ERROR, t1, "char_conversion/2");
|
|
return (FALSE);
|
|
}
|
|
if (!IsAtomTerm(t1)) {
|
|
Yap_Error(REPRESENTATION_ERROR_CHARACTER, t1, "char_conversion/2");
|
|
return (FALSE);
|
|
}
|
|
s1 = RepAtom(AtomOfTerm(t1))->UStrOfAE;
|
|
if (s1[1] != '\0') {
|
|
Yap_Error(REPRESENTATION_ERROR_CHARACTER, t1, "char_conversion/2");
|
|
return (FALSE);
|
|
}
|
|
/* check if we do have a table for converting characters */
|
|
if (GLOBAL_CharConversionTable2 == NULL) {
|
|
int i;
|
|
|
|
/* don't create a table if we don't need to */
|
|
if (s0[0] == s1[0])
|
|
return (TRUE);
|
|
GLOBAL_CharConversionTable2 =
|
|
Yap_AllocCodeSpace(NUMBER_OF_CHARS * sizeof(char));
|
|
while (GLOBAL_CharConversionTable2 == NULL) {
|
|
if (!Yap_growheap(FALSE, NUMBER_OF_CHARS * sizeof(char), NULL)) {
|
|
Yap_Error(RESOURCE_ERROR_HEAP, TermNil, LOCAL_ErrorMessage);
|
|
return (FALSE);
|
|
}
|
|
}
|
|
if (trueGlobalPrologFlag(CHAR_CONVERSION_FLAG)) {
|
|
CACHE_REGS
|
|
if (p_force_char_conversion(PASS_REGS1) == FALSE)
|
|
return (FALSE);
|
|
}
|
|
for (i = 0; i < NUMBER_OF_CHARS; i++)
|
|
GLOBAL_CharConversionTable2[i] = i;
|
|
}
|
|
/* just add the new entry */
|
|
GLOBAL_CharConversionTable2[(int)s0[0]] = s1[0];
|
|
/* done */
|
|
return (TRUE);
|
|
}
|
|
|
|
static Int p_current_char_conversion(USES_REGS1) {
|
|
Term t, t1;
|
|
unsigned char *s0, *s1;
|
|
|
|
if (GLOBAL_CharConversionTable == NULL) {
|
|
return (FALSE);
|
|
}
|
|
t = Deref(ARG1);
|
|
if (IsVarTerm(t)) {
|
|
Yap_Error(INSTANTIATION_ERROR, t, "current_char_conversion/2");
|
|
return (FALSE);
|
|
}
|
|
if (!IsAtomTerm(t)) {
|
|
Yap_Error(REPRESENTATION_ERROR_CHARACTER, t, "current_char_conversion/2");
|
|
return (FALSE);
|
|
}
|
|
s0 = RepAtom(AtomOfTerm(t))->UStrOfAE;
|
|
if (s0[1] != '\0') {
|
|
Yap_Error(REPRESENTATION_ERROR_CHARACTER, t, "current_char_conversion/2");
|
|
return (FALSE);
|
|
}
|
|
t1 = Deref(ARG2);
|
|
if (IsVarTerm(t1)) {
|
|
char out[2];
|
|
if (GLOBAL_CharConversionTable[(int)s0[0]] == '\0')
|
|
return (FALSE);
|
|
out[0] = GLOBAL_CharConversionTable[(int)s0[0]];
|
|
out[1] = '\0';
|
|
return (Yap_unify(ARG2, MkAtomTerm(Yap_LookupAtom(out))));
|
|
}
|
|
if (!IsAtomTerm(t1)) {
|
|
Yap_Error(REPRESENTATION_ERROR_CHARACTER, t1, "current_char_conversion/2");
|
|
return (FALSE);
|
|
}
|
|
s1 = RepAtom(AtomOfTerm(t1))->UStrOfAE;
|
|
if (s1[1] != '\0') {
|
|
Yap_Error(REPRESENTATION_ERROR_CHARACTER, t1, "current_char_conversion/2");
|
|
return (FALSE);
|
|
} else {
|
|
return (GLOBAL_CharConversionTable[(int)s0[0]] == '\0' &&
|
|
GLOBAL_CharConversionTable[(int)s0[0]] == s1[0]);
|
|
}
|
|
}
|
|
|
|
static Int p_all_char_conversions(USES_REGS1) {
|
|
Term out = TermNil;
|
|
int i;
|
|
|
|
if (GLOBAL_CharConversionTable == NULL) {
|
|
return (FALSE);
|
|
}
|
|
for (i = NUMBER_OF_CHARS; i > 0;) {
|
|
i--;
|
|
if (GLOBAL_CharConversionTable[i] != '\0') {
|
|
Term t1, t2;
|
|
char s[2];
|
|
s[1] = '\0';
|
|
s[0] = GLOBAL_CharConversionTable[i];
|
|
t1 = MkAtomTerm(Yap_LookupAtom(s));
|
|
out = MkPairTerm(t1, out);
|
|
s[0] = i;
|
|
t2 = MkAtomTerm(Yap_LookupAtom(s));
|
|
out = MkPairTerm(t2, out);
|
|
}
|
|
}
|
|
return (Yap_unify(ARG1, out));
|
|
}
|
|
|
|
void Yap_InitChtypes(void) {
|
|
CACHE_REGS
|
|
DefaultEncoding();
|
|
Yap_InitCPred("$change_type_of_char", 2, p_change_type_of_char,
|
|
SafePredFlag | SyncPredFlag | HiddenPredFlag);
|
|
Yap_InitCPred("toupper", 2, toupper2, SafePredFlag);
|
|
Yap_InitCPred("tolower", 2, tolower2, SafePredFlag);
|
|
Yap_InitCPred("char_conversion", 2, char_conversion, SyncPredFlag);
|
|
|
|
Yap_InitCPred("$get_default_encoding", 1, get_default_encoding,
|
|
SafePredFlag | HiddenPredFlag);
|
|
|
|
Yap_InitCPred("$encoding", 2, p_encoding, SafePredFlag | SyncPredFlag),
|
|
|
|
Yap_InitCPred("$current_char_conversion", 2, p_current_char_conversion,
|
|
SyncPredFlag | HiddenPredFlag);
|
|
Yap_InitCPred("$all_char_conversions", 1, p_all_char_conversions,
|
|
SyncPredFlag | HiddenPredFlag);
|
|
Yap_InitCPred("$force_char_conversion", 0, p_force_char_conversion,
|
|
SyncPredFlag | HiddenPredFlag);
|
|
Yap_InitCPred("$disable_char_conversion", 0, p_disable_char_conversion,
|
|
SyncPredFlag | HiddenPredFlag);
|
|
CurrentModule = CHTYPE_MODULE;
|
|
Yap_InitCPred("char_type_alnum", 1, char_type_alnum, SafePredFlag);
|
|
Yap_InitCPred("char_type_alpha", 1, char_type_alpha, SafePredFlag);
|
|
Yap_InitCPred("char_type_csym", 1, char_type_csym, SafePredFlag);
|
|
Yap_InitCPred("char_type_csymf", 1, char_type_csymf, SafePredFlag);
|
|
Yap_InitCPred("char_type_ascii", 1, char_type_ascii, SafePredFlag);
|
|
Yap_InitCPred("char_type_white", 1, char_type_white, SafePredFlag);
|
|
Yap_InitCPred("char_type_cntrl", 1, char_type_cntrl, SafePredFlag);
|
|
Yap_InitCPred("char_type_digit", 1, char_type_digit, SafePredFlag);
|
|
Yap_InitCPred("char_type_xdigit", 1, char_type_xdigit, SafePredFlag);
|
|
Yap_InitCPred("char_type_graph", 1, char_type_graph, SafePredFlag);
|
|
Yap_InitCPred("char_type_lower", 1, char_type_lower, SafePredFlag);
|
|
Yap_InitCPred("char_type_upper", 1, char_type_upper, SafePredFlag);
|
|
Yap_InitCPred("char_type_punct", 1, char_type_punct, SafePredFlag);
|
|
Yap_InitCPred("char_type_space", 1, char_type_space, SafePredFlag);
|
|
Yap_InitCPred("char_type_end_of_file", 1, char_type_end_of_file,
|
|
SafePredFlag);
|
|
Yap_InitCPred("char_type_end_of_line", 1, char_type_end_of_line,
|
|
SafePredFlag);
|
|
Yap_InitCPred("char_type_newline", 1, char_type_newline, SafePredFlag);
|
|
Yap_InitCPred("char_type_period", 1, char_type_period, SafePredFlag);
|
|
Yap_InitCPred("char_type_quote", 1, char_type_quote, SafePredFlag);
|
|
Yap_InitCPred("char_type_paren", 1, char_type_paren, SafePredFlag);
|
|
Yap_InitCPred("char_type_prolog_var_start", 1, char_type_prolog_var_start,
|
|
SafePredFlag);
|
|
Yap_InitCPred("char_type_prolog_atom_start", 1, char_type_prolog_atom_start,
|
|
SafePredFlag);
|
|
Yap_InitCPred("char_type_prolog_identifier_continue", 1,
|
|
char_type_prolog_identifier_continue, SafePredFlag);
|
|
Yap_InitCPred("char_type_prolog_prolog_symbol", 1,
|
|
char_type_prolog_prolog_symbol, SafePredFlag);
|
|
Yap_InitCPred("code_type_alnum", 1, code_type_alnum, SafePredFlag);
|
|
Yap_InitCPred("code_type_alpha", 1, code_type_alpha, SafePredFlag);
|
|
Yap_InitCPred("code_type_csym", 1, code_type_csym, SafePredFlag);
|
|
Yap_InitCPred("code_type_csymf", 1, code_type_csymf, SafePredFlag);
|
|
Yap_InitCPred("code_type_ascii", 1, code_type_ascii, SafePredFlag);
|
|
Yap_InitCPred("code_type_white", 1, code_type_white, SafePredFlag);
|
|
Yap_InitCPred("code_type_cntrl", 1, code_type_cntrl, SafePredFlag);
|
|
Yap_InitCPred("code_type_digit", 1, code_type_digit, SafePredFlag);
|
|
Yap_InitCPred("code_type_xdigit", 1, code_type_xdigit, SafePredFlag);
|
|
Yap_InitCPred("code_type_graph", 1, code_type_graph, SafePredFlag);
|
|
Yap_InitCPred("code_type_lower", 1, code_type_lower, SafePredFlag);
|
|
Yap_InitCPred("code_type_upper", 1, code_type_upper, SafePredFlag);
|
|
Yap_InitCPred("code_type_punct", 1, code_type_punct, SafePredFlag);
|
|
Yap_InitCPred("code_type_space", 1, code_type_space, SafePredFlag);
|
|
Yap_InitCPred("code_type_end_of_file", 1, code_type_end_of_file,
|
|
SafePredFlag);
|
|
Yap_InitCPred("code_type_end_of_line", 1, code_type_end_of_line,
|
|
SafePredFlag);
|
|
Yap_InitCPred("code_type_newline", 1, code_type_newline, SafePredFlag);
|
|
Yap_InitCPred("code_type_period", 1, code_type_period, SafePredFlag);
|
|
Yap_InitCPred("code_type_quote", 1, code_type_quote, SafePredFlag);
|
|
Yap_InitCPred("code_type_paren", 1, code_type_paren, SafePredFlag);
|
|
Yap_InitCPred("code_type_prolog_var_start", 1, code_type_prolog_var_start,
|
|
SafePredFlag);
|
|
Yap_InitCPred("code_type_prolog_atom_start", 1, code_type_prolog_atom_start,
|
|
SafePredFlag);
|
|
Yap_InitCPred("code_type_prolog_identifier_continue", 1,
|
|
code_type_prolog_identifier_continue, SafePredFlag);
|
|
Yap_InitCPred("code_type_prolog_prolog_symbol", 1,
|
|
code_type_prolog_prolog_symbol, SafePredFlag);
|
|
CurrentModule = PROLOG_MODULE;
|
|
}
|