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/* the Music Player Daemon (MPD)
* (c)2003-2006 by Warren Dukes (shank@mercury.chem.pitt.edu)
* This project's homepage is: http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "charConv.h"
#include "mpd_types.h"
#include "utf8.h"
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#ifdef HAVE_ICONV
#include <iconv.h>
iconv_t char_conv_iconv;
#endif
char * char_conv_to = NULL;
char * char_conv_from = NULL;
mpd_sint8 char_conv_same = 0;
mpd_sint8 char_conv_use_iconv = 0;
/* 1 is to use latin1ToUtf8
0 is not to use latin1/utf8 converter
-1 is to use utf8ToLatin1*/
mpd_sint8 char_conv_latin1ToUtf8 = 0;
#define BUFFER_SIZE 1024
static void closeCharSetConversion();
int setCharSetConversion(char * to, char * from) {
if(char_conv_to && char_conv_from &&
strcmp(to,char_conv_to)==0 && strcmp(from,char_conv_from)==0)
{
return 0;
}
closeCharSetConversion();
if(0==strcmp(to,from)) {
char_conv_same = 1;
char_conv_to = strdup(to);
char_conv_from = strdup(from);
return 0;
}
if(strcmp(to,"UTF-8")==0 && strcmp(from,"ISO-8859-1")==0) {
char_conv_latin1ToUtf8 = 1;
}
else if(strcmp(to,"ISO-8859-1")==0 && strcmp(from,"UTF-8")==0) {
char_conv_latin1ToUtf8 = -1;
}
if(char_conv_latin1ToUtf8!=0) {
char_conv_to = strdup(to);
char_conv_from = strdup(from);
return 0;
}
#ifdef HAVE_ICONV
if((char_conv_iconv = iconv_open(to,from))==(iconv_t)(-1)) return -1;
char_conv_to = strdup(to);
char_conv_from = strdup(from);
char_conv_use_iconv = 1;
return 0;
#endif
return -1;
}
char * convStrDup(char * string) {
if(!char_conv_to) return NULL;
if(char_conv_same) return strdup(string);
#ifdef HAVE_ICONV
if(char_conv_use_iconv) {
char buffer[BUFFER_SIZE];
size_t inleft = strlen(string);
char * ret;
size_t outleft;
size_t retlen = 0;
size_t err;
char * bufferPtr;
ret = malloc(1);
ret[0] = '\0';
while(inleft) {
bufferPtr = buffer;
outleft = BUFFER_SIZE;
err = iconv(char_conv_iconv,&string,&inleft,&bufferPtr,
&outleft);
if(outleft==BUFFER_SIZE || (err<0 && errno!=E2BIG)) {
free(ret);
return NULL;
}
ret = realloc(ret,retlen+BUFFER_SIZE-outleft+1);
memcpy(ret+retlen,buffer,BUFFER_SIZE-outleft);
retlen+=BUFFER_SIZE-outleft;
ret[retlen] = '\0';
}
return ret;
}
#endif
switch(char_conv_latin1ToUtf8) {
case 1:
return latin1StrToUtf8Dup(string);
break;
case -1:
return utf8StrToLatin1Dup(string);
break;
}
return NULL;
}
static void closeCharSetConversion() {
if(char_conv_to) {
#ifdef HAVE_ICONV
if(char_conv_use_iconv) iconv_close(char_conv_iconv);
#endif
free(char_conv_to);
free(char_conv_from);
char_conv_to = NULL;
char_conv_from = NULL;
char_conv_same = 0;
char_conv_latin1ToUtf8 = 0;
char_conv_use_iconv = 0;
}
}
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