/* the Music Player Daemon (MPD) * (c)2003-2004 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 int setCharSetConversion(char * to, char * from) { if(char_conv_to && strcmp(to,char_conv_to)==0 && char_conv_from && 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; } 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; } } /* vim:set shiftwidth=4 tabstop=8 expandtab: */