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Diffstat (limited to '')
| -rw-r--r-- | trunk/src/charConv.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/trunk/src/charConv.c b/trunk/src/charConv.c new file mode 100644 index 000000000..69777c47a --- /dev/null +++ b/trunk/src/charConv.c @@ -0,0 +1,168 @@ +/* the Music Player Daemon (MPD) + * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com) + * 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 "utils.h" + +#include <stdlib.h> +#include <errno.h> +#include <string.h> + +#ifdef HAVE_ICONV +#include <iconv.h> +static iconv_t char_conv_iconv; +#endif + +static char *char_conv_to; +static char *char_conv_from; +static mpd_sint8 char_conv_same; +static mpd_sint8 char_conv_use_iconv; + +/* 1 is to use latin1ToUtf8 + 0 is not to use latin1/utf8 converter + -1 is to use utf8ToLatin1*/ +static mpd_sint8 char_conv_latin1ToUtf8; + +#define BUFFER_SIZE 1024 + +static void closeCharSetConversion(void); + +int setCharSetConversion(char *to, char *from) +{ + if (char_conv_to && char_conv_from) { + if (char_conv_latin1ToUtf8 && + !strcmp(from, char_conv_to) && + !strcmp(to, char_conv_from)) { + char *swap = char_conv_from; + char_conv_from = char_conv_to; + char_conv_to = swap; + char_conv_latin1ToUtf8 *= -1; + return 0; + } else if (!strcmp(to, char_conv_to) && + !strcmp(from,char_conv_from)) { + return 0; + } + } + + closeCharSetConversion(); + + if (0 == strcmp(to, from)) { + char_conv_same = 1; + char_conv_to = xstrdup(to); + char_conv_from = xstrdup(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 = xstrdup(to); + char_conv_from = xstrdup(from); + return 0; + } +#ifdef HAVE_ICONV + if ((char_conv_iconv = iconv_open(to, from)) == (iconv_t) (-1)) + return -1; + + char_conv_to = xstrdup(to); + char_conv_from = xstrdup(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 xstrdup(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 = xmalloc(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 == -1L && errno != E2BIG)) { + free(ret); + return NULL; + } + + ret = xrealloc(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(void) +{ + 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; + } +} |