503 lines
12 KiB
C
503 lines
12 KiB
C
/*
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* Utility routines
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*
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* Copyright 1998,2000 Bertho A. Stultiens
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <assert.h>
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#include <ctype.h>
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#include "wmc.h"
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#include "winnls.h"
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#include "utils.h"
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#define SUPPRESS_YACC_ERROR_MESSAGE
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static void generic_msg(const char *s, const char *t, va_list ap)
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{
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fprintf(stderr, "%s:%d:%d: %s: ", input_name ? input_name : "stdin", line_number, char_number, t);
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vfprintf(stderr, s, ap);
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}
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/*
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* The yyerror routine should not exit because we use the error-token
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* to determine the syntactic error in the source. However, YACC
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* uses the same routine to print an error just before the error
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* token is reduced.
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* The extra routine 'xyyerror' is used to exit after giving a real
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* message.
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*/
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int mcy_error(const char *s, ...)
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{
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#ifndef SUPPRESS_YACC_ERROR_MESSAGE
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va_list ap;
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va_start(ap, s);
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generic_msg(s, "Yacc error", ap);
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va_end(ap);
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#endif
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return 1;
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}
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int xyyerror(const char *s, ...)
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{
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va_list ap;
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va_start(ap, s);
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generic_msg(s, "Error", ap);
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va_end(ap);
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exit(1);
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return 1;
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}
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int mcy_warning(const char *s, ...)
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{
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va_list ap;
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va_start(ap, s);
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generic_msg(s, "Warning", ap);
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va_end(ap);
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return 0;
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}
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void internal_error(const char *file, int line, const char *s, ...)
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{
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va_list ap;
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va_start(ap, s);
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fprintf(stderr, "Internal error (please report) %s %d: ", file, line);
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vfprintf(stderr, s, ap);
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va_end(ap);
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exit(3);
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}
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void fatal_perror( const char *msg, ... )
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{
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va_list valist;
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va_start( valist, msg );
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fprintf(stderr, "Error: ");
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vfprintf( stderr, msg, valist );
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perror( " " );
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va_end( valist );
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exit(2);
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}
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void error(const char *s, ...)
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{
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va_list ap;
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va_start(ap, s);
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fprintf(stderr, "Error: ");
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vfprintf(stderr, s, ap);
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va_end(ap);
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exit(2);
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}
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void warning(const char *s, ...)
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{
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va_list ap;
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va_start(ap, s);
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fprintf(stderr, "Warning: ");
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vfprintf(stderr, s, ap);
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va_end(ap);
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}
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int unistrlen(const WCHAR *s)
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{
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int n;
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for(n = 0; *s; n++, s++)
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;
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return n;
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}
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WCHAR *unistrcpy(WCHAR *dst, const WCHAR *src)
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{
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WCHAR *t = dst;
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while(*src)
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*t++ = *src++;
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*t = 0;
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return dst;
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}
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WCHAR *xunistrdup(const WCHAR * str)
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{
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WCHAR *s;
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assert(str != NULL);
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s = xmalloc((unistrlen(str)+1) * sizeof(WCHAR));
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return unistrcpy(s, str);
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}
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int unistricmp(const WCHAR *s1, const WCHAR *s2)
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{
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int i;
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int once = 0;
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static const char warn[] = "Don't know the uppercase equivalent of non ascii characters;"
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"comparison might yield wrong results";
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while(*s1 && *s2)
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{
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if((*s1 & 0xffff) > 0x7f || (*s2 & 0xffff) > 0x7f)
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{
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if(!once)
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{
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once++;
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mcy_warning(warn);
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}
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i = *s1++ - *s2++;
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}
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else
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i = toupper(*s1++) - toupper(*s2++);
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if(i)
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return i;
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}
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if((*s1 & 0xffff) > 0x7f || (*s2 & 0xffff) > 0x7f)
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{
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if(!once)
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mcy_warning(warn);
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return *s1 - *s2;
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}
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else
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return toupper(*s1) - toupper(*s2);
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}
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int unistrcmp(const WCHAR *s1, const WCHAR *s2)
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{
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int i;
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while(*s1 && *s2)
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{
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i = *s1++ - *s2++;
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if(i)
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return i;
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}
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return *s1 - *s2;
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}
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WCHAR *utf8_to_unicode( const char *src, int srclen, int *dstlen )
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{
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static const char utf8_length[128] =
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{
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x80-0x8f */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x90-0x9f */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xa0-0xaf */
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xb0-0xbf */
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0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0xc0-0xcf */
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0xd0-0xdf */
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2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, /* 0xe0-0xef */
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3,3,3,3,3,0,0,0,0,0,0,0,0,0,0,0 /* 0xf0-0xff */
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};
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static const unsigned char utf8_mask[4] = { 0x7f, 0x1f, 0x0f, 0x07 };
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const char *srcend = src + srclen;
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int len, res;
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WCHAR *ret, *dst;
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dst = ret = xmalloc( (srclen + 1) * sizeof(WCHAR) );
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while (src < srcend)
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{
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unsigned char ch = *src++;
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if (ch < 0x80) /* special fast case for 7-bit ASCII */
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{
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*dst++ = ch;
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continue;
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}
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len = utf8_length[ch - 0x80];
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if (len && src + len <= srcend)
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{
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res = ch & utf8_mask[len];
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switch (len)
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{
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case 3:
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if ((ch = *src ^ 0x80) >= 0x40) break;
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res = (res << 6) | ch;
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src++;
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if (res < 0x10) break;
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case 2:
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if ((ch = *src ^ 0x80) >= 0x40) break;
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res = (res << 6) | ch;
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if (res >= 0x110000 >> 6) break;
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src++;
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if (res < 0x20) break;
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if (res >= 0xd800 >> 6 && res <= 0xdfff >> 6) break;
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case 1:
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if ((ch = *src ^ 0x80) >= 0x40) break;
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res = (res << 6) | ch;
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src++;
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if (res < 0x80) break;
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if (res <= 0xffff) *dst++ = res;
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else
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{
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res -= 0x10000;
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*dst++ = 0xd800 | (res >> 10);
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*dst++ = 0xdc00 | (res & 0x3ff);
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}
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continue;
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}
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}
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*dst++ = 0xfffd;
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}
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*dst = 0;
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*dstlen = dst - ret;
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return ret;
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}
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char *unicode_to_utf8( const WCHAR *src, int srclen, int *dstlen )
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{
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char *ret, *dst;
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dst = ret = xmalloc( srclen * 3 + 1 );
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for ( ; srclen; srclen--, src++)
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{
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unsigned int ch = *src;
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if (ch < 0x80) /* 0x00-0x7f: 1 byte */
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{
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*dst++ = ch;
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continue;
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}
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if (ch < 0x800) /* 0x80-0x7ff: 2 bytes */
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{
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dst[1] = 0x80 | (ch & 0x3f);
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ch >>= 6;
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dst[0] = 0xc0 | ch;
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dst += 2;
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continue;
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}
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if (ch >= 0xd800 && ch <= 0xdbff && srclen > 1 && src[1] >= 0xdc00 && src[1] <= 0xdfff)
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{
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/* 0x10000-0x10ffff: 4 bytes */
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ch = 0x10000 + ((ch & 0x3ff) << 10) + (src[1] & 0x3ff);
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dst[3] = 0x80 | (ch & 0x3f);
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ch >>= 6;
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dst[2] = 0x80 | (ch & 0x3f);
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ch >>= 6;
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dst[1] = 0x80 | (ch & 0x3f);
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ch >>= 6;
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dst[0] = 0xf0 | ch;
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dst += 4;
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src++;
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srclen--;
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continue;
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}
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if (ch >= 0xd800 && ch <= 0xdfff) ch = 0xfffd; /* invalid surrogate pair */
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/* 0x800-0xffff: 3 bytes */
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dst[2] = 0x80 | (ch & 0x3f);
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ch >>= 6;
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dst[1] = 0x80 | (ch & 0x3f);
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ch >>= 6;
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dst[0] = 0xe0 | ch;
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dst += 3;
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}
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*dst = 0;
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*dstlen = dst - ret;
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return ret;
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}
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#ifdef _WIN32
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int is_valid_codepage(int id)
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{
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return IsValidCodePage( id );
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}
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WCHAR *codepage_to_unicode( int codepage, const char *src, int srclen, int *dstlen )
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{
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WCHAR *dst = xmalloc( (srclen + 1) * sizeof(WCHAR) );
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DWORD ret = MultiByteToWideChar( codepage, MB_ERR_INVALID_CHARS, src, srclen, dst, srclen );
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if (!ret) return NULL;
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dst[ret] = 0;
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*dstlen = ret;
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return dst;
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}
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#else /* _WIN32 */
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struct nls_info
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{
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unsigned short codepage;
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unsigned short unidef;
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unsigned short trans_unidef;
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unsigned short *cp2uni;
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unsigned short *dbcs_offsets;
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};
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static struct nls_info nlsinfo[128];
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static void init_nls_info( struct nls_info *info, unsigned short *ptr )
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{
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unsigned short hdr_size = ptr[0];
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info->codepage = ptr[1];
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info->unidef = ptr[4];
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info->trans_unidef = ptr[6];
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ptr += hdr_size;
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info->cp2uni = ++ptr;
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ptr += 256;
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if (*ptr++) ptr += 256; /* glyph table */
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info->dbcs_offsets = *ptr ? ptr + 1 : NULL;
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}
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static const struct nls_info *get_nls_info( unsigned int codepage )
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{
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struct stat st;
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unsigned short *data;
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char *path;
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unsigned int i;
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int fd;
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for (i = 0; i < ARRAY_SIZE(nlsinfo) && nlsinfo[i].codepage; i++)
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if (nlsinfo[i].codepage == codepage) return &nlsinfo[i];
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assert( i < ARRAY_SIZE(nlsinfo) );
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for (i = 0; nlsdirs[i]; i++)
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{
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path = strmake( "%s/c_%03u.nls", nlsdirs[i], codepage );
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if ((fd = open( path, O_RDONLY )) != -1) break;
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free( path );
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}
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if (!nlsdirs[i]) return NULL;
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fstat( fd, &st );
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data = xmalloc( st.st_size );
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if (read( fd, data, st.st_size ) != st.st_size) error( "failed to load %s\n", path );
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close( fd );
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free( path );
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init_nls_info( &nlsinfo[i], data );
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return &nlsinfo[i];
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}
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int is_valid_codepage(int cp)
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{
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return cp == CP_UTF8 || get_nls_info( cp );
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}
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WCHAR *codepage_to_unicode( int codepage, const char *src, int srclen, int *dstlen )
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{
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const struct nls_info *info = get_nls_info( codepage );
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unsigned int i;
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WCHAR dbch, *dst = xmalloc( (srclen + 1) * sizeof(WCHAR) );
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if (!info) error( "codepage %u not supported\n", codepage );
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if (info->dbcs_offsets)
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{
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for (i = 0; srclen; i++, srclen--, src++)
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{
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unsigned short off = info->dbcs_offsets[(unsigned char)*src];
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if (off)
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{
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if (srclen == 1) return NULL;
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dbch = (src[0] << 8) | (unsigned char)src[1];
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src++;
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srclen--;
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dst[i] = info->dbcs_offsets[off + (unsigned char)*src];
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if (dst[i] == info->unidef && dbch != info->trans_unidef) return NULL;
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}
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else
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{
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dst[i] = info->cp2uni[(unsigned char)*src];
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if (dst[i] == info->unidef && *src != info->trans_unidef) return NULL;
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}
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}
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}
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else
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{
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for (i = 0; i < srclen; i++)
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{
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dst[i] = info->cp2uni[(unsigned char)src[i]];
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if (dst[i] == info->unidef && src[i] != info->trans_unidef) return NULL;
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}
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}
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dst[i] = 0;
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*dstlen = i;
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return dst;
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}
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#endif /* _WIN32 */
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/*******************************************************************
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* buffer management
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*
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* Function for writing to a memory buffer.
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*/
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unsigned char *output_buffer;
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size_t output_buffer_pos;
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size_t output_buffer_size;
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static void check_output_buffer_space( size_t size )
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{
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if (output_buffer_pos + size >= output_buffer_size)
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{
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output_buffer_size = max( output_buffer_size * 2, output_buffer_pos + size );
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output_buffer = xrealloc( output_buffer, output_buffer_size );
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}
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}
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void init_output_buffer(void)
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{
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output_buffer_size = 1024;
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output_buffer_pos = 0;
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output_buffer = xmalloc( output_buffer_size );
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}
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void flush_output_buffer( const char *name )
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{
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int fd = open( name, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0666 );
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if (fd == -1) error( "Error creating %s\n", name );
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if (write( fd, output_buffer, output_buffer_pos ) != output_buffer_pos)
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error( "Error writing to %s\n", name );
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close( fd );
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free( output_buffer );
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}
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void put_byte( unsigned char val )
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{
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check_output_buffer_space( 1 );
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output_buffer[output_buffer_pos++] = val;
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}
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void put_word( unsigned short val )
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{
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check_output_buffer_space( 2 );
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output_buffer[output_buffer_pos++] = val;
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output_buffer[output_buffer_pos++] = val >> 8;
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}
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void put_dword( unsigned int val )
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{
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check_output_buffer_space( 4 );
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output_buffer[output_buffer_pos++] = val;
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output_buffer[output_buffer_pos++] = val >> 8;
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output_buffer[output_buffer_pos++] = val >> 16;
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output_buffer[output_buffer_pos++] = val >> 24;
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}
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void align_output( unsigned int align )
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{
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size_t size = align - (output_buffer_pos % align);
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if (size == align) return;
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check_output_buffer_space( size );
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memset( output_buffer + output_buffer_pos, 0, size );
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output_buffer_pos += size;
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}
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