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xenocara/lib/libX11/modules/lc/gen/lcGenConv.c

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sync code with last improvements from OpenBSD
2023-08-28 05:57:34 +00:00
/*
* Copyright 1992, 1993 by TOSHIBA Corp.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of TOSHIBA not be used in advertising
* or publicity pertaining to distribution of the software without specific,
* written prior permission. TOSHIBA make no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* TOSHIBA DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
* TOSHIBA BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
* ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*
* Author: Katsuhisa Yano TOSHIBA Corp.
* mopi@osa.ilab.toshiba.co.jp
*/
/*
* (c) Copyright 1995 FUJITSU LIMITED
* This is source code modified by FUJITSU LIMITED under the Joint
* Development Agreement for the CDE/Motif PST.
*
* Modifier: Masayoshi Shimamura FUJITSU LIMITED
*
*/
/*
* 2000
* Modifier: Ivan Pascal The XFree86 Project
*/
/*
* A generic locale loader for all kinds of ISO-2022 based codesets.
* Supports: all locales.
* How: Provides generic converters for ISO-2022 based codesets. Extensible as
* far as ISO-2022 is extensible: codesets can be given by name in the
* stream. Overall distinction between GL (0x00..0x7f) and GR (0x80..0xff).
* In every chunk between escape sequences, the number of bytes per
* character (char_size) is constant.
* Platforms: all systems.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "Xlibint.h"
#include "XlcGeneric.h"
#include <stdio.h>
sync with OpenBSD -current
2024-07-12 14:44:09 +02:00
#ifndef X_LOCALE
sync code with last improvements from OpenBSD
2023-08-28 05:57:34 +00:00
#define STDCVT
#endif
typedef struct _CTDataRec {
const char *name;
const char *encoding; /* Compound Text encoding */
} CTDataRec, *CTData;
static CTDataRec directionality_data[] =
{
{ "BEGIN_LEFT-TO-RIGHT_TEXT", "\2331]" },
{ "BEGIN_RIGHT-TO-LEFT_TEXT", "\2332]" },
{ "END_OF_STRING", "\233]" },
};
typedef struct _StateRec {
XLCd lcd;
/* CT state */
XlcCharSet charset; /* charset of current state */
XlcCharSet GL_charset; /* charset of initial state in GL */
XlcCharSet GR_charset; /* charset of initial state in GR */
/* MB shift state */
CodeSet GL_codeset;
CodeSet GR_codeset;
} StateRec, *State;
#define GR 0x80 /* begins right-side (non-ascii) region */
#define GL 0x7f /* ends left-side (ascii) region */
#define ESC 0x1b
#define CSI 0x9b
#define STX 0x02
#define isrightside(c) ((c) & GR)
#define isleftside(c) (!isrightside(c))
/* Forward declarations for local routines. */
static int mbstocts (XlcConv conv, XPointer *from, int *from_left,
XPointer *to, int *to_left, XPointer *args, int num_args);
static int ctstombs (XlcConv conv, XPointer *from, int *from_left,
XPointer *to, int *to_left, XPointer *args, int num_args);
static int cstombs (XlcConv conv, XPointer *from, int *from_left,
XPointer *to, int *to_left, XPointer *args, int num_args);
/* ------------------------------------------------------------------------- */
/* Misc */
/* ------------------------------------------------------------------------- */
static int
compare(
const char *src,
const char *encoding,
int length)
{
const char *start = src;
while (length-- > 0) {
if (*src++ != *encoding++)
return 0;
if (*encoding == '\0')
return src - start;
}
return 0;
}
static unsigned long
conv_to_dest(
Conversion conv,
unsigned long code)
{
int i;
int conv_num = conv->conv_num;
FontScope convlist = conv->convlist;
for (i = 0; i < conv_num; i++) {
if (convlist[i].start <= code && code <= convlist[i].end) {
switch (convlist[i].shift_direction) {
case '+':
return(code + convlist[i].shift);
case '-':
return(code - convlist[i].shift);
default:
return(code);
}
}
}
return(code);
}
static unsigned long
conv_to_source(
Conversion conv,
unsigned long code)
{
int i;
int conv_num;
FontScope convlist;
unsigned long start_p;
unsigned long start_m;
unsigned long end_p;
unsigned long end_m;
if (!conv)
return(code);
conv_num = conv->conv_num;
convlist = conv->convlist;
for (i = 0; i < conv_num; i++) {
switch (convlist[i].shift_direction) {
case '+':
start_p = convlist[i].start + convlist[i].shift;
end_p = convlist[i].end + convlist[i].shift;
if (start_p <= code && code <= end_p)
return(code - convlist[i].shift);
break;
case '-':
start_m = convlist[i].start - convlist[i].shift;
end_m = convlist[i].end - convlist[i].shift;
if (start_m <= code && code <= end_m)
return(code + convlist[i].shift);
break;
default:
continue;
}
}
return(code);
}
static unsigned long
mb_to_gi(
unsigned long mb,
CodeSet codeset)
{
int i;
unsigned long mb_tmp, mask = 0;
if (codeset->mbconv) {
mb_tmp = conv_to_dest(codeset->mbconv, mb);
if (mb_tmp != mb)
return(mb_tmp);
}
if (codeset->side == XlcC0 || codeset->side == XlcGL ||
codeset->side == XlcC1 || codeset->side == XlcGR) {
for (i = 0; i < codeset->length; i++)
mask = (mask << 8) | GL;
mb = mb & mask;
}
return(mb);
}
static unsigned long
gi_to_mb(
unsigned long glyph_index,
CodeSet codeset)
{
int i;
unsigned long mask = 0;
if (codeset->side == XlcC1 || codeset->side == XlcGR) {
for (i = 0; i < codeset->length; i++)
mask = (mask << 8) | GR;
glyph_index = glyph_index | mask;
}
if (codeset->mbconv)
return( conv_to_source(codeset->mbconv, glyph_index) );
return(glyph_index);
}
static Bool
gi_to_wc(
XLCd lcd,
unsigned long glyph_index,
CodeSet codeset,
wchar_t *wc)
{
unsigned char mask = 0;
unsigned long wc_encoding = codeset->wc_encoding;
int length = codeset->length;
unsigned long wc_shift_bits = XLC_GENERIC(lcd, wc_shift_bits);
mask = (1 << wc_shift_bits) - 1 ;
for (*wc = 0, length--; length >= 0; length--)
*wc = (*wc << wc_shift_bits) | ((glyph_index >> (length * 8 )) & mask);
*wc = *wc | wc_encoding;
return(True);
}
static Bool
wc_to_gi(
XLCd lcd,
wchar_t wc,
unsigned long *glyph_index,
CodeSet *codeset)
{
int i;
unsigned char mask = 0;
unsigned long wc_encoding;
unsigned long wc_encode_mask = XLC_GENERIC(lcd, wc_encode_mask);
unsigned long wc_shift_bits = XLC_GENERIC(lcd, wc_shift_bits);
int codeset_num = XLC_GENERIC(lcd, codeset_num);
CodeSet *codeset_list = XLC_GENERIC(lcd, codeset_list);
wc_encoding = wc & wc_encode_mask;
for (*codeset = NULL, i = 0; i < codeset_num; i++) {
if (wc_encoding == codeset_list[i]->wc_encoding) {
*codeset = codeset_list[i];
break;
}
}
if (*codeset == NULL)
return(False);
mask = (1 << wc_shift_bits) - 1 ;
wc = wc & ~wc_encode_mask;
for (*glyph_index = 0, i = (*codeset)->length - 1; i >= 0; i--)
*glyph_index = (*glyph_index << 8) |
( ((unsigned long)wc >> (i * wc_shift_bits)) & mask );
return(True);
}
static CodeSet
mb_parse_codeset(
State state,
int num,
const char **inbufptr,
int *from_left)
{
int len;
int from_len = (*from_left) + 1;
const char *src = (*inbufptr) - 1;
ParseInfo *mb_parse_list = XLC_GENERIC(state->lcd, mb_parse_list);
ParseInfo parse_info;
CodeSet codeset;
for (--num ; (parse_info = mb_parse_list[num]) != NULL; num++) {
len = compare(src, parse_info->encoding, from_len);
if (len > 0) {
codeset = parse_info->codeset;
if (parse_info->type == E_LSL)
state->GL_codeset = codeset;
else if (parse_info->type == E_LSR)
state->GR_codeset = codeset;
--len;
*inbufptr += len;
*from_left -= len;
return codeset;
}
}
return (CodeSet) NULL;
}
static CodeSet
byteM_parse_codeset(
XLCd lcd,
const char *inbufptr)
{
unsigned char ch;
CodeSet codeset;
ByteInfoList byteM;
ByteInfoListRec byteM_rec;
ByteInfo byteinfo;
ByteInfoRec byteinfo_rec;
Bool hit = False;
int i, j, k;
int codeset_num = XLC_GENERIC(lcd, codeset_num);
CodeSet *codeset_list = XLC_GENERIC(lcd, codeset_list);
for (i = 0; i < codeset_num; i++) {
codeset = codeset_list[i];
byteM = codeset->byteM;
if (codeset->side != XlcNONE || byteM == NULL)
continue;
for (j = 0; j < codeset->length; j++) {
ch = *((const unsigned char *)(inbufptr + j));
byteM_rec = byteM[j];
byteinfo = byteM_rec.byteinfo;
for (hit = False, k = 0; k < byteM_rec.byteinfo_num; k++) {
byteinfo_rec = byteinfo[k];
if (byteinfo_rec.start <= ch && ch <= byteinfo_rec.end) {
hit = True;
break;
}
}
if (!hit)
break;
}
if (hit)
return(codeset);
}
return(NULL);
}
#define GLGR_parse_codeset(ch) \
(isrightside(ch) ? (state->GR_codeset) : \
(state->GL_codeset) )
static XlcCharSet
gi_parse_charset(
unsigned long glyph_index,
CodeSet codeset)
{
int i;
XlcCharSet *charset_list = codeset->charset_list;
int num_charsets = codeset->num_charsets;
ExtdSegment ctextseg = codeset->ctextseg;
XlcCharSet charset = NULL;
int area_num;
FontScope area;
/* lockup ct sequence */
for (i = 0; i < num_charsets; i++) {
charset = charset_list[i];
if (*charset->ct_sequence != '\0')
break;
}
if (i >= num_charsets)
return(NULL);
if (charset->source != CSsrcStd)
return (charset);
if (!ctextseg)
return(charset);
area = ctextseg->area;
area_num = ctextseg->area_num;
for (i = 0; i < area_num; i++) {
if (area[i].start <= glyph_index && glyph_index <= area[i].end) {
charset = ctextseg->charset;
if (*charset->ct_sequence == '\0')
return(NULL);
break;
}
}
return(charset);
}
static Bool
ct_parse_csi(
const char *inbufptr,
int *ctr_seq_len)
{
int i;
int num = sizeof(directionality_data) / sizeof(directionality_data[0]);
for (i = 0; i < num; i++) {
if ( !(*ctr_seq_len = strlen(directionality_data[i].encoding)) )
continue;
if ( strncmp(inbufptr, directionality_data[i].encoding,
*ctr_seq_len) == 0)
return(True);
}
return(False);
}
static int
cmp_esc_sequence(
const char *inbufptr,
XlcCharSet charset)
{
int seq_len, name_len, total_len;
unsigned char byte_m, byte_l;
const char *ct_sequence = charset->ct_sequence;
const char *encoding_name = charset->encoding_name;
/* check esc sequence */
if ( !(seq_len = strlen(ct_sequence) ) )
return(0);
if ( strncmp(inbufptr, ct_sequence, seq_len) != 0)
return(0);
/* Standard Character Set Encoding ? */
if (charset->source == CSsrcStd)
return(seq_len);
/*
* Non-Standard Character Set Encoding
*
* +--- ---+-----+-----+-----+---- ----+-----+-----+------- ------+
* | ctseq | M | L | encoding name | STX | contents |
* +--- ---+-----+-----+-----+---- ----+-----+-----+------- ------+
* 4bytes 1byte 1byte variable length 1byte variable length
* | |
* +----------------------------------------------+
* rest length = ((M - 128) * 128) + (L - 128)
*/
/* get length of encoding name */
inbufptr += seq_len;
byte_m = *inbufptr++;
byte_l = *inbufptr++;
name_len = strlen(encoding_name);
if (((byte_m - 128) * 128 + (byte_l - 128) - 1) < name_len)
return(0);
if ( _XlcNCompareISOLatin1(inbufptr, encoding_name, name_len) != 0 )
return(0);
/* check STX (Start of Text) */
inbufptr = inbufptr + name_len;
if ( *inbufptr != STX )
return(0);
total_len = seq_len + name_len + 3;
return(total_len);
}
static Bool
ct_parse_charset(
XLCd lcd,
const char *inbufptr,
XlcCharSet *charset,
int *ctr_seq_len)
{
int i, j;
ExtdSegment ctextseg;
int num_charsets;
XlcCharSet *charset_list;
CodeSet codeset;
int codeset_num = XLC_GENERIC(lcd, codeset_num);
CodeSet *codeset_list = XLC_GENERIC(lcd, codeset_list);
int segment_conv_num = XLC_GENERIC(lcd, segment_conv_num);
SegConv segment_conv = XLC_GENERIC(lcd, segment_conv);
/* get charset from XLC_XLOCALE by escape sequence */
for (i = 0; i < codeset_num; i++) {
codeset = codeset_list[i];
num_charsets = codeset->num_charsets;
charset_list = codeset->charset_list;
ctextseg = codeset->ctextseg;
for (j = 0; j < num_charsets; j++) {
*charset = charset_list[j];
if ((*ctr_seq_len = cmp_esc_sequence(inbufptr, *charset)))
return(True);
}
if (ctextseg) {
*charset = ctextseg->charset;
if ((*ctr_seq_len = cmp_esc_sequence(inbufptr, *charset)))
return(True);
}
}
/* get charset from XLC_SEGMENTCONVERSION by escape sequence */
if (!segment_conv)
return(False);
for (i = 0; i < segment_conv_num; i++) {
*charset = segment_conv[i].source;
if ((*ctr_seq_len = cmp_esc_sequence(inbufptr, *charset)))
return(True);
*charset = segment_conv[i].dest;
if ((*ctr_seq_len = cmp_esc_sequence(inbufptr, *charset)))
return(True);
}
return(False);
}
static Bool
segment_conversion(
XLCd lcd,
XlcCharSet *charset,
unsigned long *glyph_index)
{
int i;
int segment_conv_num = XLC_GENERIC(lcd, segment_conv_num);
SegConv segment_conv = XLC_GENERIC(lcd, segment_conv);
FontScopeRec range;
ConversionRec conv_rec;
if (!segment_conv)
return(True);
for (i = 0; i < segment_conv_num; i++) {
if (segment_conv[i].source == *charset)
break;
}
if (i >= segment_conv_num)
return(True);
range = segment_conv[i].range;
if (*glyph_index < range.start || range.end < *glyph_index)
return(True);
*charset = segment_conv[i].dest;
conv_rec.conv_num = segment_conv[i].conv_num;
conv_rec.convlist = segment_conv[i].conv;
*glyph_index = conv_to_dest(&conv_rec, *glyph_index);
return(True);
}
static CodeSet
_XlcGetCodeSetFromName(
XLCd lcd,
const char *name)
{
int i, j;
XlcCharSet charset;
int num_charsets;
XlcCharSet *charset_list;
CodeSet codeset;
int codeset_num = XLC_GENERIC(lcd, codeset_num);
CodeSet *codeset_list = XLC_GENERIC(lcd, codeset_list);
for (i = 0; i < codeset_num; i++) {
codeset = codeset_list[i];
num_charsets = codeset->num_charsets;
charset_list = codeset->charset_list;
for (j = 0; j < num_charsets; j++) {
charset = charset_list[j];
if (!strlen(charset->name))
continue;
if ( strcmp(charset->name, name) == 0)
return(codeset);
}
}
return(NULL);
}
static Bool
_XlcGetCodeSetFromCharSet(
XLCd lcd,
XlcCharSet charset,
CodeSet *codeset,
unsigned long *glyph_index)
{
int j, num;
CodeSet *codeset_list = XLC_GENERIC(lcd, codeset_list);
XlcCharSet *charset_list;
int codeset_num, num_charsets;
Conversion ctconv;
unsigned long glyph_index_tmp = 0;
ExtdSegment ctextseg;
codeset_num = XLC_GENERIC(lcd, codeset_num);
for (num = 0 ; num < codeset_num; num++) {
*codeset = codeset_list[num];
ctconv = (*codeset)->ctconv;
ctextseg = (*codeset)->ctextseg;
num_charsets = (*codeset)->num_charsets;
charset_list = (*codeset)->charset_list;
glyph_index_tmp = conv_to_source(ctconv, *glyph_index);
if (charset->source == CSsrcStd) {
/* Standard Character Set Encoding */
if (glyph_index_tmp == *glyph_index) {
for (j = 0; j < num_charsets; j++) {
if (charset_list[j] == charset) {
goto end_loop;
}
}
}
} else {
/* Non-Standard Character Set Encoding */
for (j = 0; j < num_charsets; j++) {
if (charset_list[j] == charset) {
goto end_loop;
}
}
if (glyph_index_tmp != *glyph_index) {
if (ctextseg && ctextseg->charset == charset) {
goto end_loop;
}
}
}
}
end_loop:
if (num < codeset_num) {
*glyph_index = glyph_index_tmp;
return(True);
}
return(False);
}
#define check_string_encoding(codeset) (codeset->string_encoding)
static void
output_ulong_value(
char *outbufptr,
unsigned long code,
int length,
XlcSide side)
{
int i;
for (i = (length - 1) * 8; i >= 0; i -= 8) {
*outbufptr = ( code >> i) & 0xff;
if (side == XlcC0 || side == XlcGL) {
*outbufptr = *outbufptr & GL;
} else if (side == XlcC1 || side == XlcGR) {
*outbufptr = *outbufptr | GR;
}
outbufptr++;
}
}
/* -------------------------------------------------------------------------- */
/* Init */
/* -------------------------------------------------------------------------- */
static XlcCharSet default_GL_charset = 0;
static XlcCharSet default_GR_charset = 0;
static void
init_state(
XlcConv conv)
{
State state = (State) conv->state;
/* for CT */
state->charset = NULL;
state->GL_charset = default_GL_charset;
state->GR_charset = default_GR_charset;
/* for MB shift state */
state->GL_codeset = XLC_GENERIC(state->lcd, initial_state_GL);
state->GR_codeset = XLC_GENERIC(state->lcd, initial_state_GR);
}
/* -------------------------------------------------------------------------- */
/* Convert */
/* -------------------------------------------------------------------------- */
static int
mbstowcs_org(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
State state = (State) conv->state;
XLCd lcd = state->lcd;
unsigned char ch;
unsigned long mb = 0;
wchar_t wc;
int length = 0, len_left = 0;
int unconv_num = 0;
int num;
CodeSet codeset = NULL;
const char *inbufptr;
wchar_t *outbufptr = (wchar_t *) *to;
int from_size = *from_left;
unsigned char *mb_parse_table = XLC_GENERIC(lcd, mb_parse_table);
if (from == NULL || *from == NULL) {
_XlcResetConverter(conv);
return( 0 );
}
inbufptr = *from;
while (*from_left && *to_left) {
ch = *inbufptr++;
(*from_left)--;
/* null ? */
if (!ch) {
if (outbufptr) {*outbufptr++ = L'\0';}
(*to_left)--;
/* error check */
if (len_left) {
unconv_num += (length - len_left);
len_left = 0;
}
continue;
}
/* same mb char data */
if (len_left)
goto output_one_wc;
/* next mb char data for single shift ? */
if (mb_parse_table && (num = mb_parse_table[ch]) ) {
codeset = mb_parse_codeset(state, num, &inbufptr, from_left);
if (codeset != NULL) {
length = len_left = codeset->length;
mb = 0;
continue;
}
}
/* next mb char data for byteM ? */
if ((codeset = byteM_parse_codeset(lcd, (inbufptr - 1))))
goto next_mb_char;
/* next mb char data for GL or GR side ? */
if ((codeset = GLGR_parse_codeset(ch)))
goto next_mb_char;
/* can't find codeset for the ch */
unconv_num++;
continue;
next_mb_char:
length = len_left = codeset->length;
mb = 0;
output_one_wc:
mb = (mb << 8) | ch; /* 1 byte left shift */
len_left--;
/* last of one mb char data */
if (!len_left) {
gi_to_wc(lcd, mb_to_gi(mb, codeset), codeset, &wc);
if (outbufptr) {*outbufptr++ = wc;}
(*to_left)--;
}
} /* end of while */
/* error check on last char */
if (len_left) {
inbufptr -= (length - len_left);
(*from_left) += (length - len_left);
unconv_num += (length - len_left);
}
*from = (XPointer) ((const char *) *from + from_size);
*from_left = 0;
*to = (XPointer) outbufptr;
return unconv_num;
}
static int
stdc_mbstowcs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
const char *src = *((const char **) from);
wchar_t *dst = *((wchar_t **) to);
int src_left = *from_left;
int dst_left = *to_left;
int length, unconv_num = 0;
while (src_left > 0 && dst_left > 0) {
length = mbtowc(dst, src, src_left);
if (length > 0) {
src += length;
src_left -= length;
if (dst)
dst++;
dst_left--;
} else if (length < 0) {
src++;
src_left--;
unconv_num++;
} else {
/* null ? */
src++;
src_left--;
if (dst)
*dst++ = L'\0';
dst_left--;
}
}
*from = (XPointer) src;
if (dst)
*to = (XPointer) dst;
*from_left = src_left;
*to_left = dst_left;
return unconv_num;
}
static int
wcstombs_org(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
State state = (State) conv->state;
XLCd lcd = state->lcd;
char *encoding;
unsigned long mb, glyph_index;
wchar_t wc;
int length;
int unconv_num = 0;
CodeSet codeset;
const wchar_t *inbufptr = (const wchar_t *) *from;
char *outbufptr = *to;
int from_size = *from_left;
const char *default_string = XLC_PUBLIC(lcd, default_string);
int defstr_len = strlen(default_string);
while (*from_left && *to_left) {
wc = *inbufptr++;
(*from_left)--;
/* null ? */
if (!wc) {
if (outbufptr) {*outbufptr++ = '\0';}
(*to_left)--;
continue;
}
/* convert */
if ( !wc_to_gi(lcd, wc, &glyph_index, &codeset) ) {
/* output default_string of XDefaultString() */
if (*to_left < defstr_len)
break;
if (outbufptr) {
memcpy(outbufptr, default_string, defstr_len);
outbufptr += defstr_len;
}
(*to_left) -= defstr_len;
unconv_num++;
} else {
mb = gi_to_mb(glyph_index, codeset);
if (codeset->parse_info) {
Bool need_shift = False;
switch (codeset->parse_info->type) {
case E_LSL :
if (codeset != state->GL_codeset) {
need_shift = True;
state->GL_codeset = codeset;
}
break;
case E_LSR :
if (codeset != state->GR_codeset) {
need_shift = True;
state->GR_codeset = codeset;
}
break;
/* case E_SS */
default:
need_shift = True;
}
/* output shift sequence */
if (need_shift) {
encoding = codeset->parse_info->encoding;
length = strlen(encoding);
if (*to_left < length)
break;
if (outbufptr) {
memcpy(outbufptr, encoding, length);
outbufptr += length;
}
(*to_left) -= length;
}
}
/* output characters */
length = codeset->length;
if (*to_left < length)
break;
if (outbufptr) {
output_ulong_value(outbufptr, mb, length, XlcNONE);
outbufptr += length;
}
(*to_left) -= length;
}
} /* end of while */
*from = (XPointer) ((const wchar_t *) *from + from_size);
*from_left = 0;
*to = (XPointer) outbufptr;
return unconv_num;
}
static int
stdc_wcstombs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
const wchar_t *src = *((const wchar_t **) from);
char *dst = *((char **) to);
int src_left = *from_left;
int dst_left = *to_left;
int length, unconv_num = 0;
while (src_left > 0 && dst_left >= MB_CUR_MAX) {
length = wctomb(dst, *src); /* XXX */
if (length > 0) {
src++;
src_left--;
if (dst)
dst += length;
dst_left -= length;
} else if (length < 0) {
src++;
src_left--;
unconv_num++;
}
}
*from = (XPointer) src;
if (dst)
*to = (XPointer) dst;
*from_left = src_left;
*to_left = dst_left;
return unconv_num;
}
static int
wcstocts(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
State state = (State) conv->state;
XLCd lcd = state->lcd;
unsigned long glyph_index;
wchar_t wc;
int total_len, seq_len, name_len;
int unconv_num = 0;
Bool first_flag = True, standard_flag;
XlcSide side;
CodeSet codeset;
XlcCharSet charset, old_charset = NULL;
const char *ct_sequence;
const wchar_t *inbufptr = (const wchar_t *) *from;
char *outbufptr = *to;
int from_size = *from_left;
char *ext_seg_len = NULL;
while (*from_left && *to_left) {
wc = *inbufptr++;
(*from_left)--;
/* null ? */
if (!wc) {
if (outbufptr) {*outbufptr++ = '\0';}
(*to_left)--;
continue;
}
/* convert */
if ( !wc_to_gi(lcd, wc, &glyph_index, &codeset) ) {
unconv_num++;
continue;
}
/* parse charset */
if ( !(charset = gi_parse_charset(glyph_index, codeset)) ) {
unconv_num++;
continue;
}
/* Standard Character Set Encoding ? */
standard_flag = charset->source == CSsrcStd ? True : False;
/*
* Non-Standard Character Set Encoding
*
* +-----+-----+-----+-----+-----+-----+-----+---- ----+-----+-----+
* | esc sequence | M | L | encoding name | STX |
* +-----+-----+-----+-----+-----+-----+-----+---- ----+-----+-----+
* 4bytes 1byte 1byte variable length 1byte
* | |
* +-----------------------------------------+
* name length = ((M - 128) * 128) + (L - 128)
*/
/* make encoding data */
ct_sequence = charset->ct_sequence;
side = charset->side;
seq_len = strlen(ct_sequence);
if (standard_flag) {
name_len = 0;
total_len = seq_len;
} else {
name_len = strlen(charset->encoding_name) + 1;
total_len = seq_len + name_len + 2;
}
/* output escape sequence of CT */
if ( (charset != old_charset) &&
!(first_flag && charset->string_encoding) ){
if ( (ext_seg_len != NULL) && outbufptr) {
int i = (outbufptr - ext_seg_len) - 2;
*ext_seg_len++ = i / 128 + 128;
*ext_seg_len = i % 128 + 128;
ext_seg_len = NULL;
}
if (*to_left < total_len + 1) {
unconv_num++;
break;
}
if (outbufptr) {
strcpy((char *)outbufptr, ct_sequence);
outbufptr += seq_len;
if (!standard_flag) {
const char *i = charset->encoding_name;
ext_seg_len = outbufptr;
outbufptr += 2;
for (; *i ; i++)
*outbufptr++ = ((*i >= 'A') && (*i <= 'Z')) ?
*i - 'A' + 'a' : *i;
*outbufptr++ = STX;
}
}
(*to_left) -= total_len;
first_flag = False;
old_charset = charset;
}
/* output glyph index */
if (codeset->ctconv)
glyph_index = conv_to_dest(codeset->ctconv, glyph_index);
if (*to_left < charset->char_size) {
unconv_num++;
break;
}
if (outbufptr) {
output_ulong_value(outbufptr, glyph_index, charset->char_size, side);
outbufptr += charset->char_size;
}
(*to_left) -= charset->char_size;
} /* end of while */
if ( (ext_seg_len != NULL) && outbufptr) {
int i = (outbufptr - ext_seg_len) - 2;
*ext_seg_len++ = i / 128 + 128;
*ext_seg_len = i % 128 + 128;
}
*from = (XPointer) ((const wchar_t *) *from + from_size);
*from_left = 0;
*to = (XPointer) outbufptr;
return unconv_num;
}
static int
stdc_wcstocts(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
XPointer buf = Xmalloc((*from_left) * MB_CUR_MAX);
char *buf_ptr1 = buf;
int buf_left1 = (*from_left) * MB_CUR_MAX;
char *buf_ptr2 = buf_ptr1;
int buf_left2;
int unconv_num1 = 0, unconv_num2 = 0;
unconv_num1 = stdc_wcstombs(conv,
from, from_left, &buf_ptr1, &buf_left1, args, num_args);
if (unconv_num1 < 0)
goto ret;
buf_left2 = buf_ptr1 - buf_ptr2;
unconv_num2 = mbstocts(conv,
&buf_ptr2, &buf_left2, to, to_left, args, num_args);
if (unconv_num2 < 0)
goto ret;
ret:
Xfree(buf);
return (unconv_num1 + unconv_num2);
}
static int
ctstowcs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
State state = (State) conv->state;
XLCd lcd = state->lcd;
unsigned char ch;
unsigned long glyph_index = 0;
wchar_t wc;
int ctr_seq_len = 0, gi_len_left = 0, gi_len = 0;
int unconv_num = 0;
CodeSet codeset = NULL;
XlcCharSet charset_tmp;
const char *inbufptr;
wchar_t *outbufptr = (wchar_t *) *to;
int from_size = *from_left;
_XlcResetConverter(conv); /* ??? */
if (from == NULL || *from == NULL) {
_XlcResetConverter(conv);
return( 0 );
}
inbufptr = *from;
while (*from_left && *to_left) {
ch = *inbufptr++;
(*from_left)--;
/* null ? */
if (!ch) {
if (outbufptr) {*outbufptr++ = L'\0';}
(*to_left)--;
/* error check */
if (gi_len_left) {
unconv_num += (gi_len - gi_len_left);
gi_len_left = 0;
}
continue;
}
/* same glyph_index data */
if (gi_len_left)
goto output_one_wc;
/* control sequence ? */
if (ch == CSI) {
if ( !ct_parse_csi(inbufptr - 1, &ctr_seq_len) )
goto skip_the_seg;
if (*from_left + 1 < ctr_seq_len) {
inbufptr--;
(*from_left)++;
unconv_num += *from_left;
break;
}
/* skip the control sequence */
inbufptr += (ctr_seq_len - 1);
*from_left -= (ctr_seq_len - 1);
continue;
}
/* escape sequence ? */
if (ch == ESC) {
if ( !ct_parse_charset(lcd,
inbufptr - 1, &state->charset, &ctr_seq_len) )
goto skip_the_seg;
if (state->charset->side == XlcC0 ||
state->charset->side == XlcGL)
{
state->GL_charset = state->charset;
}
else if (state->charset->side == XlcC1 ||
state->charset->side == XlcGR)
{
state->GR_charset = state->charset;
}
else if (state->charset->side == XlcGLGR)
{
state->GL_charset = state->charset;
state->GR_charset = state->charset;
}
if (*from_left + 1 < ctr_seq_len) {
inbufptr--;
(*from_left)++;
unconv_num += *from_left;
break;
}
/* skip the escape sequence */
inbufptr += (ctr_seq_len - 1);
*from_left -= (ctr_seq_len - 1);
continue;
}
/* check current state */
if (isleftside(ch))
state->charset = state->GL_charset;
else
state->charset = state->GR_charset;
gi_len = gi_len_left = state->charset->char_size;
glyph_index = 0;
output_one_wc:
if (state->charset->side == XlcC1 || state->charset->side == XlcGR)
glyph_index = (glyph_index << 8) | (ch & GL);
else
glyph_index = (glyph_index << 8) | ch;
gi_len_left--;
/* last of one glyph_index data */
if (!gi_len_left) {
/* segment conversion */
charset_tmp = state->charset;
segment_conversion(lcd, &charset_tmp, &glyph_index);
/* get codeset */
if ( !_XlcGetCodeSetFromCharSet(lcd, charset_tmp,
&codeset, &glyph_index) ) {
unconv_num += gi_len;
continue;
}
/* convert glyph index to wicd char */
gi_to_wc(lcd, glyph_index, codeset, &wc);
if (outbufptr) {*outbufptr++ = wc;}
(*to_left)--;
}
continue;
skip_the_seg:
/* skip until next escape or control sequence */
while ( *from_left ) {
ch = *inbufptr++;
(*from_left)--;
unconv_num++;
if (ch == ESC || ch == CSI) {
inbufptr--;
(*from_left)++;
unconv_num--;
break;
}
}
if ( !(*from_left) )
break;
} /* end of while */
/* error check on last char */
if (gi_len_left) {
inbufptr -= (gi_len - gi_len_left);
(*from_left) += (gi_len - gi_len_left);
unconv_num += (gi_len - gi_len_left);
}
*from = (XPointer) ((const char *) *from + from_size);
*from_left = 0;
*to = (XPointer) outbufptr;
return unconv_num;
}
static int
cstowcs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
State state = (State) conv->state;
XLCd lcd = state->lcd;
unsigned char ch;
unsigned long glyph_index = 0;
wchar_t wc;
int gi_len_left = 0, gi_len = 0;
int unconv_num = 0;
CodeSet codeset = NULL;
XlcCharSet charset, charset_tmp;
const char *inbufptr;
wchar_t *outbufptr = (wchar_t *) *to;
int from_size = *from_left;
if (from == NULL || *from == NULL) {
return( 0 );
}
inbufptr = *from;
charset = (XlcCharSet) args[0];
while (*from_left && *to_left) {
if (!gi_len_left) {
gi_len_left = gi_len = charset->char_size;
glyph_index = 0;
}
ch = *inbufptr++;
(*from_left)--;
/* null ? */
if (!ch) {
if (outbufptr) {*outbufptr++ = L'\0';}
(*to_left)--;
/* error check */
if (gi_len_left) {
unconv_num += (gi_len - gi_len_left);
gi_len_left = 0;
}
continue;
}
if (charset->side == XlcC1 || charset->side == XlcGR)
glyph_index = (glyph_index << 8) | (ch & GL);
else
glyph_index = (glyph_index << 8) | ch;
gi_len_left--;
/* last of one glyph_index data */
if (!gi_len_left) {
/* segment conversion */
charset_tmp = charset;
segment_conversion(lcd, &charset_tmp, &glyph_index);
/* get codeset */
if ( !_XlcGetCodeSetFromCharSet(lcd, charset_tmp,
&codeset, &glyph_index) ) {
unconv_num += gi_len;
continue;
}
/* convert glyph index to wicd char */
gi_to_wc(lcd, glyph_index, codeset, &wc);
if (outbufptr) {*outbufptr++ = wc;}
(*to_left)--;
}
} /* end of while */
/* error check on last char */
if (gi_len_left) {
inbufptr -= (gi_len - gi_len_left);
(*from_left) += (gi_len - gi_len_left);
unconv_num += (gi_len - gi_len_left);
}
*from = (XPointer) ((const char *) *from + from_size);
*from_left = 0;
*to = (XPointer) outbufptr;
return unconv_num;
}
static int
stdc_ctstowcs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
XPointer buf = Xmalloc((*from_left) * MB_CUR_MAX);
char *buf_ptr1 = buf;
int buf_left1 = (*from_left) * MB_CUR_MAX;
char *buf_ptr2 = buf_ptr1;
int buf_left2;
int unconv_num1 = 0, unconv_num2 = 0;
unconv_num1 = ctstombs(conv,
from, from_left, &buf_ptr1, &buf_left1, args, num_args);
if (unconv_num1 < 0)
goto ret;
buf_left2 = buf_ptr1 - buf_ptr2;
unconv_num2 = stdc_mbstowcs(conv,
&buf_ptr2, &buf_left2, to, to_left, args, num_args);
if (unconv_num2 < 0)
goto ret;
ret:
Xfree(buf);
return (unconv_num1 + unconv_num2);
}
static int
stdc_cstowcs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
XPointer buf = Xmalloc((*from_left) * MB_CUR_MAX);
char *buf_ptr1 = buf;
int buf_left1 = (*from_left) * MB_CUR_MAX;
char *buf_ptr2 = buf_ptr1;
int buf_left2;
int unconv_num1 = 0, unconv_num2 = 0;
unconv_num1 = cstombs(conv,
from, from_left, &buf_ptr1, &buf_left1, args, num_args);
if (unconv_num1 < 0)
goto ret;
buf_left2 = buf_ptr1 - buf_ptr2;
unconv_num2 = stdc_mbstowcs(conv,
&buf_ptr2, &buf_left2, to, to_left, args, num_args);
if (unconv_num2 < 0)
goto ret;
ret:
Xfree(buf);
return (unconv_num1 + unconv_num2);
}
static int
mbstocts(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
XPointer buf = Xmalloc((*from_left) * sizeof(wchar_t));
char *buf_ptr1 = buf;
int buf_left1 = (*from_left);
char *buf_ptr2 = buf_ptr1;
int buf_left2;
int unconv_num1 = 0, unconv_num2 = 0;
unconv_num1 = mbstowcs_org(conv,
from, from_left, &buf_ptr1, &buf_left1, args, num_args);
if (unconv_num1 < 0)
goto ret;
buf_left2 = (buf_ptr1 - buf_ptr2) / sizeof(wchar_t);
unconv_num2 += wcstocts(conv,
&buf_ptr2, &buf_left2, to, to_left, args, num_args);
if (unconv_num2 < 0)
goto ret;
ret:
Xfree(buf);
return (unconv_num1 + unconv_num2);
}
static int
mbstostr(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
State state = (State) conv->state;
XLCd lcd = state->lcd;
unsigned char ch;
unsigned long mb = 0;
int length = 0, len_left = 0;
int unconv_num = 0;
int num;
CodeSet codeset = NULL;
const char *inbufptr;
char *outbufptr = *to;
int from_size = *from_left;
unsigned char *mb_parse_table = XLC_GENERIC(lcd, mb_parse_table);
if (from == NULL || *from == NULL) {
_XlcResetConverter(conv);
return( 0 );
}
inbufptr = *from;
while (*from_left && *to_left) {
ch = *inbufptr++;
(*from_left)--;
/* null ? */
if (!ch) {
if (outbufptr) {*outbufptr++ = '\0';}
(*to_left)--;
/* error check */
if (len_left) {
unconv_num += (length - len_left);
len_left = 0;
}
continue;
}
/* same mb char data */
if (len_left)
goto output_one_mb;
/* next mb char data for single shift ? */
if (mb_parse_table && (num = mb_parse_table[ch]) ) {
codeset = mb_parse_codeset(state, num, &inbufptr, from_left);
if (codeset != NULL) {
length = len_left = codeset->length;
mb = 0;
continue;
}
}
/* next char data : byteM ? */
if ((codeset = byteM_parse_codeset(lcd, (inbufptr - 1))))
goto next_mb_char;
/* next char data : GL or GR side ? */
if ((codeset = GLGR_parse_codeset(ch)))
goto next_mb_char;
/* can't find codeset for the ch */
unconv_num++;
continue;
next_mb_char:
length = len_left = codeset->length;
mb = 0;
output_one_mb:
mb = (mb << 8) | ch; /* 1 byte left shift */
len_left--;
/* last of one mb char data */
if (!len_left) {
if (check_string_encoding(codeset)) {
if (outbufptr) {*outbufptr++ = mb & 0xff;}
(*to_left)--;
} else {
unconv_num++;
}
}
} /* end of while */
/* error check on last char */
if (len_left) {
inbufptr -= (length - len_left);
(*from_left) += (length - len_left);
unconv_num += (length - len_left);
}
*from = (XPointer) ((const char *) *from + from_size);
*from_left = 0;
*to = (XPointer) outbufptr;
return unconv_num;
}
static int
mbtocs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
State state = (State) conv->state;
XLCd lcd = state->lcd;
unsigned char ch;
unsigned long mb = 0;
unsigned long glyph_index;
int length = 0, len_left = 0, char_len;
int unconv_num = 0;
int num;
XlcSide side;
CodeSet codeset = NULL;
XlcCharSet charset = NULL;
const char *inbufptr;
char *outbufptr = *to;
int from_size = *from_left;
unsigned char *mb_parse_table = XLC_GENERIC(lcd, mb_parse_table);
if (from == NULL || *from == NULL) {
_XlcResetConverter(conv);
return( 0 );
}
inbufptr = *from;
while (*from_left && *to_left) {
ch = *inbufptr++;
(*from_left)--;
/* null ? */
if (!ch) {
unconv_num = 1;
if (len_left)
unconv_num += (length - len_left);
break;
}
/* same mb char data */
if (len_left)
goto output;
/* next mb char data for single shift ? */
if (mb_parse_table && (num = mb_parse_table[ch]) ) {
codeset = mb_parse_codeset(state, num, &inbufptr, from_left);
if (codeset != NULL) {
length = len_left = codeset->length;
mb = 0;
continue;
}
}
/* next mb char data for byteM ? */
if ((codeset = byteM_parse_codeset(lcd, (inbufptr - 1))))
goto next_mb_char;
/* next mb char data for GL or GR side ? */
if ((codeset = GLGR_parse_codeset(ch)))
goto next_mb_char;
/* can't find codeset for the ch */
unconv_num = 1;
break;
next_mb_char:
length = len_left = codeset->length;
mb = 0;
output:
mb = (mb << 8) | ch; /* 1 byte left shift */
len_left--;
/* last of one mb char data */
if (!len_left) {
glyph_index = mb_to_gi(mb, codeset);
if (!(charset = gi_parse_charset(glyph_index, codeset))) {
unconv_num = length;
break;
}
char_len = charset->char_size;
side = charset->side;
/* output glyph index */
if (codeset->ctconv)
glyph_index = conv_to_dest(codeset->ctconv, glyph_index);
if (*to_left < char_len) {
unconv_num = length;
break;
}
if (outbufptr) {
output_ulong_value(outbufptr, glyph_index, char_len, side);
outbufptr += char_len;
}
(*to_left) -= char_len;
break;
}
} /* end of while */
/* error end */
if (unconv_num) {
*from = (XPointer) ((const char *) *from + from_size);
*from_left = 0;
*to = (XPointer) outbufptr;
return -1;
}
/* normal end */
*from = (XPointer) inbufptr;
*to = (XPointer) outbufptr;
if (num_args > 0)
*((XlcCharSet *) args[0]) = charset;
return 0;
}
static int
mbstocs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
int ret;
XlcCharSet charset_old, charset = NULL;
XPointer tmp_args[1];
const char *inbufptr;
int in_left;
char *outbufptr;
int out_left;
tmp_args[0] = (XPointer) &charset;
ret = mbtocs(conv, from, from_left, to, to_left, tmp_args, 1);
charset_old = charset;
while ( ret == 0 && *from_left && *to_left) {
inbufptr = *from;
in_left = *from_left;
outbufptr = *to;
out_left = *to_left;
ret = mbtocs(conv, from, from_left, to, to_left, tmp_args, 1);
if (charset_old != charset) {
*from = (XPointer) inbufptr;
*from_left = in_left;
*to = (XPointer) outbufptr;
*to_left = out_left;
break;
}
}
if (num_args > 0)
*((XlcCharSet *) args[0]) = charset_old;
/* error end */
if (ret != 0)
return( -1 );
return(0);
}
static int
wcstostr(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
State state = (State) conv->state;
XLCd lcd = state->lcd;
char *encoding;
unsigned long mb, glyph_index;
wchar_t wc;
int length;
int unconv_num = 0;
CodeSet codeset;
const wchar_t *inbufptr = (const wchar_t *) *from;
char *outbufptr = *to;
int from_size = *from_left;
const char *default_string = XLC_PUBLIC(lcd, default_string);
int defstr_len = strlen(default_string);
while (*from_left && *to_left) {
wc = *inbufptr++;
(*from_left)--;
/* null ? */
if (!wc) {
if (outbufptr) {*outbufptr++ = '\0';}
(*to_left)--;
continue;
}
/* convert */
if ( !wc_to_gi(lcd, wc, &glyph_index, &codeset) ) {
/* output default_string of XDefaultString() */
if (*to_left < defstr_len)
break;
if (outbufptr) {
memcpy(outbufptr, default_string, defstr_len);
outbufptr += defstr_len;
}
(*to_left) -= defstr_len;
unconv_num++;
} else {
mb = gi_to_mb(glyph_index, codeset);
if (check_string_encoding(codeset)) {
if (codeset->parse_info) {
Bool need_shift = False;
switch (codeset->parse_info->type) {
case E_LSL :
if (codeset != state->GL_codeset) {
need_shift = True;
state->GL_codeset = codeset;
}
break;
case E_LSR :
if (codeset != state->GR_codeset) {
need_shift = True;
state->GR_codeset = codeset;
}
break;
/* case E_SS */
default:
need_shift = True;
}
/* output shift sequence */
if (need_shift) {
encoding = codeset->parse_info->encoding;
length = strlen(encoding);
if (*to_left < length)
break;
if (outbufptr) {
memcpy(outbufptr, encoding, length);
outbufptr += length;
}
(*to_left) -= length;
}
}
/* output characters */
length = codeset->length;
if (*to_left < length)
break;
if (outbufptr) {
output_ulong_value(outbufptr, mb, length, XlcNONE);
outbufptr += length;
}
(*to_left) -= length;
} else {
unconv_num++;
}
}
} /* end of while */
*from = (XPointer) ((const wchar_t *) *from + from_size);
*from_left = 0;
*to = (XPointer) outbufptr;
return unconv_num;
}
static int
stdc_wcstostr(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
XPointer buf = Xmalloc((*from_left) * MB_CUR_MAX);
char *buf_ptr1 = buf;
int buf_left1 = (*from_left) * MB_CUR_MAX;
char *buf_ptr2 = buf_ptr1;
int buf_left2;
int unconv_num1 = 0, unconv_num2 = 0;
unconv_num1 = stdc_wcstombs(conv,
from, from_left, &buf_ptr1, &buf_left1, args, num_args);
if (unconv_num1 < 0)
goto ret;
buf_left2 = buf_ptr1 - buf_ptr2;
unconv_num2 = mbstostr(conv,
&buf_ptr2, &buf_left2, to, to_left, args, num_args);
if (unconv_num2 < 0)
goto ret;
ret:
Xfree(buf);
return (unconv_num1 + unconv_num2);
}
static int
wctocs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
State state = (State) conv->state;
XLCd lcd = state->lcd;
wchar_t wc;
unsigned long glyph_index;
int char_len;
int unconv_num = 0;
XlcSide side;
CodeSet codeset;
XlcCharSet charset = NULL;
const wchar_t *inbufptr = (const wchar_t *) *from;
char *outbufptr = *to;
int from_size = *from_left;
if (*from_left && *to_left) {
wc = *inbufptr++;
(*from_left)--;
/* null ? */
if (!wc) {
unconv_num = 1;
goto end;
}
/* convert */
if ( !wc_to_gi(lcd, wc, &glyph_index, &codeset) ) {
unconv_num = 1;
goto end;
}
if ( !(charset = gi_parse_charset(glyph_index, codeset)) ) {
unconv_num = 1;
goto end;
}
char_len = charset->char_size;
side = charset->side;
/* output glyph index */
if (codeset->ctconv)
glyph_index = conv_to_dest(codeset->ctconv, glyph_index);
if (*to_left < char_len) {
unconv_num++;
goto end;
}
if (outbufptr) {
output_ulong_value(outbufptr, glyph_index, char_len, side);
outbufptr += char_len;
}
(*to_left) -= char_len;
}
end:
/* error end */
if (unconv_num) {
*from = (XPointer) ((const wchar_t *) *from + from_size);
*from_left = 0;
*to = (XPointer) outbufptr;
return -1;
}
/* normal end */
*from = (XPointer) inbufptr;
*to = (XPointer) outbufptr;
if (num_args > 0)
*((XlcCharSet *) args[0]) = charset;
return 0;
}
static int
stdc_wctocs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
const wchar_t *src = *((const wchar_t **) from);
wchar_t wch;
XPointer tmp_from, save_from = *from;
char tmp[32];
int length, ret, src_left = *from_left;
int from_size = *from_left;
if (src_left > 0 && *to_left > 0) {
if ((wch = *src)) {
length = wctomb(tmp, wch);
} else {
goto end;
}
if (length < 0)
goto end;
tmp_from = (XPointer) tmp;
ret = mbtocs(conv, &tmp_from, &length, to, to_left, args, num_args);
if (ret < 0)
goto end;
src++;
src_left--;
}
end:
/* error end */
if (save_from == (XPointer) src) {
*from = (XPointer) ((const wchar_t *) *from + from_size);
*from_left = 0;
return -1;
}
/* normal end */
*from = (XPointer) src;
*from_left = src_left;
return 0;
}
static int
wcstocs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
int ret;
XlcCharSet charset_old, charset = NULL;
XPointer tmp_args[1];
const wchar_t *inbufptr;
int in_left;
XPointer outbufptr;
int out_left;
tmp_args[0] = (XPointer) &charset;
ret = wctocs(conv, from, from_left, to, to_left, tmp_args, 1);
charset_old = charset;
while ( ret == 0 && *from_left && *to_left) {
inbufptr = (const wchar_t *) *from;
in_left = *from_left;
outbufptr = *to;
out_left = *to_left;
ret = wctocs(conv, from, from_left, to, to_left, tmp_args, 1);
if (charset_old != charset) {
*from = (XPointer) inbufptr;
*from_left = in_left;
*to = (XPointer) outbufptr;
*to_left = out_left;
break;
}
}
if (num_args > 0)
*((XlcCharSet *) args[0]) = charset_old;
/* error end */
if (ret != 0)
return( -1 );
return(0);
}
#ifdef STDCVT
static int
stdc_wcstocs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
int ret;
XlcCharSet charset_old, charset = NULL;
XPointer tmp_args[1];
const wchar_t *inbufptr;
int in_left;
XPointer outbufptr;
int out_left;
tmp_args[0] = (XPointer) &charset;
ret = stdc_wctocs(conv, from, from_left, to, to_left, tmp_args, 1);
charset_old = charset;
while ( ret == 0 && *from_left && *to_left ) {
inbufptr = (const wchar_t *) *from;
in_left = *from_left;
outbufptr = *to;
out_left = *to_left;
ret = stdc_wctocs(conv, from, from_left, to, to_left, tmp_args, 1);
if (charset_old != charset) {
*from = (XPointer) inbufptr;
*from_left = in_left;
*to = (XPointer) outbufptr;
*to_left = out_left;
break;
}
}
if (num_args > 0)
*((XlcCharSet *) args[0]) = charset_old;
/* error end */
if (ret != 0)
return( -1 );
return(0);
}
#endif
static int
ctstombs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
XPointer buf = Xmalloc((*from_left) * sizeof(wchar_t));
char *buf_ptr1 = buf;
int buf_left1 = (*from_left);
char *buf_ptr2 = buf_ptr1;
int buf_left2;
int unconv_num1 = 0, unconv_num2 = 0;
unconv_num1 = ctstowcs(conv,
from, from_left, &buf_ptr1, &buf_left1, args, num_args);
if (unconv_num1 < 0)
goto ret;
buf_left2 = (buf_ptr1 - buf_ptr2) / sizeof(wchar_t);
unconv_num2 += wcstombs_org(conv,
&buf_ptr2, &buf_left2, to, to_left, args, num_args);
if (unconv_num2 < 0)
goto ret;
ret:
Xfree(buf);
return (unconv_num1 + unconv_num2);
}
static int
cstombs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
XPointer buf = Xmalloc((*from_left) * sizeof(wchar_t));
char *buf_ptr1 = buf;
int buf_left1 = (*from_left);
char *buf_ptr2 = buf_ptr1;
int buf_left2;
int unconv_num1 = 0, unconv_num2 = 0;
unconv_num1 = cstowcs(conv,
from, from_left, &buf_ptr1, &buf_left1, args, num_args);
if (unconv_num1 < 0)
goto ret;
buf_left2 = (buf_ptr1 - buf_ptr2) / sizeof(wchar_t);
unconv_num2 += wcstombs_org(conv,
&buf_ptr2, &buf_left2, to, to_left, args, num_args);
if (unconv_num2 < 0)
goto ret;
ret:
Xfree(buf);
return (unconv_num1 + unconv_num2);
}
static int
strtombs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
State state = (State) conv->state;
XLCd lcd = state->lcd;
char *encoding;
unsigned long mb, glyph_index;
unsigned char ch;
int length;
int unconv_num = 0;
CodeSet codeset;
const char *inbufptr = *from;
char *outbufptr = *to;
int from_size = *from_left;
while (*from_left && *to_left) {
ch = *inbufptr++;
(*from_left)--;
/* null ? */
if (!ch) {
if (outbufptr) {*outbufptr++ = '\0';}
(*to_left)--;
continue;
}
/* convert */
if (isleftside(ch)) {
glyph_index = ch;
codeset = _XlcGetCodeSetFromName(lcd, "ISO8859-1:GL");
} else {
glyph_index = ch & GL;
codeset = _XlcGetCodeSetFromName(lcd, "ISO8859-1:GR");
}
if (!codeset) {
unconv_num++;
continue;
}
mb = gi_to_mb(glyph_index, codeset);
if (codeset->parse_info) {
Bool need_shift = False;
switch (codeset->parse_info->type) {
case E_LSL :
if (codeset != state->GL_codeset) {
need_shift = True;
state->GL_codeset = codeset;
}
break;
case E_LSR :
if (codeset != state->GR_codeset) {
need_shift = True;
state->GR_codeset = codeset;
}
break;
/* case E_SS */
default:
need_shift = True;
}
/* output shift sequence */
if (need_shift) {
encoding = codeset->parse_info->encoding;
length = strlen(encoding);
if (*to_left < length)
break;
if (outbufptr) {
memcpy(outbufptr, encoding, length);
outbufptr += length;
}
(*to_left) -= length;
}
}
/* output characters */
length = codeset->length;
if (*to_left < length)
break;
if (outbufptr) {
output_ulong_value(outbufptr, mb, length, XlcNONE);
outbufptr += length;
}
(*to_left) -= length;
} /* end of while */
*from = (XPointer) ((const char *) *from + from_size);
*from_left = 0;
*to = (XPointer) outbufptr;
return unconv_num;
}
static int
strtowcs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
State state = (State) conv->state;
XLCd lcd = state->lcd;
unsigned char ch;
unsigned long glyph_index;
wchar_t wc;
int unconv_num = 0;
CodeSet codeset;
const char *inbufptr = *from;
wchar_t *outbufptr = (wchar_t *)*to;
int from_size = *from_left;
while (*from_left && *to_left) {
ch = *inbufptr++;
(*from_left)--;
/* null ? */
if (!ch) {
if (outbufptr) {*outbufptr++ = L'\0';}
(*to_left)--;
continue;
}
/* convert */
if (isleftside(ch)) {
glyph_index = ch;
codeset = _XlcGetCodeSetFromName(lcd, "ISO8859-1:GL");
} else {
glyph_index = ch & GL;
codeset = _XlcGetCodeSetFromName(lcd, "ISO8859-1:GR");
}
if (!codeset) {
unconv_num++;
continue;
}
gi_to_wc(lcd, glyph_index, codeset, &wc);
if (outbufptr) {*outbufptr++ = wc;}
(*to_left)--;
} /* end of while */
*from = (XPointer) ((const char *) *from + from_size);
*from_left = 0;
*to = (XPointer) outbufptr;
return unconv_num;
}
static int
stdc_strtowcs(
XlcConv conv,
XPointer *from,
int *from_left,
XPointer *to,
int *to_left,
XPointer *args,
int num_args)
{
XPointer buf = Xmalloc((*from_left) * MB_CUR_MAX);
char *buf_ptr1 = buf;
int buf_left1 = (*from_left) * MB_CUR_MAX;
char *buf_ptr2 = buf_ptr1;
int buf_left2;
int unconv_num1 = 0, unconv_num2 = 0;
unconv_num1 = strtombs(conv,
from, from_left, &buf_ptr1, &buf_left1, args, num_args);
if (unconv_num1 < 0)
goto ret;
buf_left2 = buf_ptr1 - buf_ptr2;
unconv_num2 = stdc_mbstowcs(conv,
&buf_ptr2, &buf_left2, to, to_left, args, num_args);
if (unconv_num2 < 0)
goto ret;
ret:
Xfree(buf);
return (unconv_num1 + unconv_num2);
}
/* -------------------------------------------------------------------------- */
/* Close */
/* -------------------------------------------------------------------------- */
static void
close_converter(
XlcConv conv)
{
Xfree(conv->state);
Xfree(conv->methods);
Xfree(conv);
}
/* -------------------------------------------------------------------------- */
/* Open */
/* -------------------------------------------------------------------------- */
static XlcConv
create_conv(
XLCd lcd,
XlcConvMethods methods)
{
XlcConv conv;
State state;
conv = Xcalloc(1, sizeof(XlcConvRec));
if (conv == NULL)
return (XlcConv) NULL;
conv->methods = Xmalloc(sizeof(XlcConvMethodsRec));
if (conv->methods == NULL)
goto err;
*conv->methods = *methods;
conv->methods->reset = init_state;
conv->state = Xcalloc(1, sizeof(StateRec));
if (conv->state == NULL)
goto err;
state = (State) conv->state;
state->lcd = lcd;
_XlcResetConverter(conv);
return conv;
err:
close_converter(conv);
return (XlcConv) NULL;
}
static XlcConvMethodsRec mbstocts_methods = {
close_converter,
mbstocts,
NULL
};
static XlcConv
open_mbstocts(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &mbstocts_methods);
}
static XlcConvMethodsRec mbstostr_methods = {
close_converter,
mbstostr,
NULL
};
static XlcConv
open_mbstostr(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &mbstostr_methods);
}
static XlcConvMethodsRec mbstocs_methods = {
close_converter,
mbstocs,
NULL
};
static XlcConv
open_mbstocs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &mbstocs_methods);
}
static XlcConvMethodsRec mbtocs_methods = {
close_converter,
mbtocs,
NULL
};
static XlcConv
open_mbtocs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &mbtocs_methods);
}
static XlcConvMethodsRec ctstombs_methods = {
close_converter,
ctstombs,
NULL
};
static XlcConv
open_ctstombs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &ctstombs_methods);
}
static XlcConvMethodsRec cstombs_methods = {
close_converter,
cstombs,
NULL
};
static XlcConv
open_cstombs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &cstombs_methods);
}
static XlcConvMethodsRec strtombs_methods = {
close_converter,
strtombs,
NULL
};
static XlcConv
open_strtombs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &strtombs_methods);
}
#ifdef STDCVT
static XlcConvMethodsRec stdc_mbstowcs_methods = {
close_converter,
stdc_mbstowcs,
NULL
};
static XlcConv
open_stdc_mbstowcs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &stdc_mbstowcs_methods);
}
static XlcConvMethodsRec stdc_wcstombs_methods = {
close_converter,
stdc_wcstombs,
NULL
};
static XlcConv
open_stdc_wcstombs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &stdc_wcstombs_methods);
}
static XlcConvMethodsRec stdc_wcstocts_methods = {
close_converter,
stdc_wcstocts,
NULL
};
static XlcConv
open_stdc_wcstocts(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &stdc_wcstocts_methods);
}
static XlcConvMethodsRec stdc_wcstostr_methods = {
close_converter,
stdc_wcstostr,
NULL
};
static XlcConv
open_stdc_wcstostr(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &stdc_wcstostr_methods);
}
static XlcConvMethodsRec stdc_wcstocs_methods = {
close_converter,
stdc_wcstocs,
NULL
};
static XlcConv
open_stdc_wcstocs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &stdc_wcstocs_methods);
}
static XlcConvMethodsRec stdc_wctocs_methods = {
close_converter,
stdc_wctocs,
NULL
};
static XlcConv
open_stdc_wctocs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &stdc_wctocs_methods);
}
static XlcConvMethodsRec stdc_ctstowcs_methods = {
close_converter,
stdc_ctstowcs,
NULL
};
static XlcConv
open_stdc_ctstowcs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &stdc_ctstowcs_methods);
}
static XlcConvMethodsRec stdc_cstowcs_methods = {
close_converter,
stdc_cstowcs,
NULL
};
static XlcConv
open_stdc_cstowcs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &stdc_cstowcs_methods);
}
static XlcConvMethodsRec stdc_strtowcs_methods = {
close_converter,
stdc_strtowcs,
NULL
};
static XlcConv
open_stdc_strtowcs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &stdc_strtowcs_methods);
}
#endif /* STDCVT */
static XlcConvMethodsRec mbstowcs_methods = {
close_converter,
mbstowcs_org,
NULL
};
static XlcConv
open_mbstowcs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &mbstowcs_methods);
}
static XlcConvMethodsRec wcstombs_methods = {
close_converter,
wcstombs_org,
NULL
};
static XlcConv
open_wcstombs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &wcstombs_methods);
}
static XlcConvMethodsRec wcstocts_methods = {
close_converter,
wcstocts,
NULL
};
static XlcConv
open_wcstocts(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &wcstocts_methods);
}
static XlcConvMethodsRec wcstostr_methods = {
close_converter,
wcstostr,
NULL
};
static XlcConv
open_wcstostr(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &wcstostr_methods);
}
static XlcConvMethodsRec wcstocs_methods = {
close_converter,
wcstocs,
NULL
};
static XlcConv
open_wcstocs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &wcstocs_methods);
}
static XlcConvMethodsRec wctocs_methods = {
close_converter,
wctocs,
NULL
};
static XlcConv
open_wctocs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &wctocs_methods);
}
static XlcConvMethodsRec ctstowcs_methods = {
close_converter,
ctstowcs,
NULL
};
static XlcConv
open_ctstowcs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &ctstowcs_methods);
}
static XlcConvMethodsRec cstowcs_methods = {
close_converter,
cstowcs,
NULL
};
static XlcConv
open_cstowcs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &cstowcs_methods);
}
static XlcConvMethodsRec strtowcs_methods = {
close_converter,
strtowcs,
NULL
};
static XlcConv
open_strtowcs(
XLCd from_lcd,
const char *from_type,
XLCd to_lcd,
const char *to_type)
{
return create_conv(from_lcd, &strtowcs_methods);
}
/* -------------------------------------------------------------------------- */
/* Loader */
/* -------------------------------------------------------------------------- */
XLCd
_XlcGenericLoader(
const char *name)
{
XLCd lcd;
#ifdef STDCVT
XLCdGenericPart *gen;
#endif
lcd = _XlcCreateLC(name, _XlcGenericMethods);
if (lcd == NULL)
return lcd;
default_GL_charset = _XlcGetCharSet("ISO8859-1:GL");
default_GR_charset = _XlcGetCharSet("ISO8859-1:GR");
_XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNCompoundText, open_mbstocts);
_XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNString, open_mbstostr);
_XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNCharSet, open_mbstocs);
_XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNChar, open_mbtocs);
_XlcSetConverter(lcd, XlcNCompoundText, lcd, XlcNMultiByte, open_ctstombs);
_XlcSetConverter(lcd, XlcNString, lcd, XlcNMultiByte, open_strtombs);
_XlcSetConverter(lcd, XlcNCharSet, lcd, XlcNMultiByte, open_cstombs);
#ifdef STDCVT
gen = XLC_GENERIC_PART(lcd);
if (gen->use_stdc_env != True) {
#endif
_XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNWideChar, open_mbstowcs);
_XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNMultiByte, open_wcstombs);
_XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNCompoundText, open_wcstocts);
_XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNString, open_wcstostr);
_XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNCharSet, open_wcstocs);
_XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNChar, open_wctocs);
_XlcSetConverter(lcd, XlcNCompoundText, lcd, XlcNWideChar, open_ctstowcs);
_XlcSetConverter(lcd, XlcNString, lcd, XlcNWideChar, open_strtowcs);
_XlcSetConverter(lcd, XlcNCharSet, lcd, XlcNWideChar, open_cstowcs);
#ifdef STDCVT
}
#endif
#ifdef STDCVT
if (gen->use_stdc_env == True) {
_XlcSetConverter(lcd, XlcNMultiByte, lcd, XlcNWideChar, open_stdc_mbstowcs);
_XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNMultiByte, open_stdc_wcstombs);
_XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNCompoundText, open_stdc_wcstocts);
_XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNString, open_stdc_wcstostr);
_XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNCharSet, open_stdc_wcstocs);
_XlcSetConverter(lcd, XlcNWideChar, lcd, XlcNChar, open_stdc_wctocs);
_XlcSetConverter(lcd, XlcNCompoundText, lcd, XlcNWideChar, open_stdc_ctstowcs);
_XlcSetConverter(lcd, XlcNString, lcd, XlcNWideChar, open_stdc_strtowcs);
_XlcSetConverter(lcd, XlcNCharSet, lcd, XlcNWideChar, open_stdc_cstowcs);
}
#endif
_XlcAddUtf8Converters(lcd);
return lcd;
}
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