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path, tag_id3: use g_convert() instead of charConv.c

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GLib provides an easier API for character set conversion than iconv().
Use g_convert() / g_convert_with_fallback() for all character
conversions.  We should optimize the path.h API later to return a
newly allocated buffer, so we can just pass GLib's return value.
This commit is contained in:
Max Kellermann
2008-10-15 19:36:30 +02:00
parent e89599eaad
commit 8746a58ab9
5 changed files with 40 additions and 234 deletions
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2
src/Makefile.am
View File

@@ -45,7 +45,6 @@ mpd_headers = \
output_control.h \
audioOutputs/audioOutput_shout.h \
buffer2array.h \
charConv.h \
command.h \
idle.h \
condition.h \
@@ -131,7 +130,6 @@ mpd_SOURCES = \
output_control.c \
output_init.c \
buffer2array.c \
charConv.c \
command.c \
idle.c \
condition.c \

177
src/charConv.c
View File

@@ -1,177 +0,0 @@
/* 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 "utf8.h"
#include "utils.h"
#include "path.h"
#include "os_compat.h"
#include "../config.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 int8_t char_conv_same;
static int8_t char_conv_use_iconv;
/* 1 is to use latin1ToUtf8
0 is not to use latin1/utf8 converter
-1 is to use utf8ToLatin1*/
static int8_t char_conv_latin1ToUtf8;
#define BUFFER_SIZE MPD_PATH_MAX
static void closeCharSetConversion(void);
int setCharSetConversion(const char *to, const 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;
#else
return -1;
#endif
}
#ifdef HAVE_ICONV
static inline size_t deconst_iconv(iconv_t cd,
const char **inbuf, size_t *inbytesleft,
char **outbuf, size_t *outbytesleft)
{
union {
const char **a;
char **b;
} deconst;
deconst.a = inbuf;
return iconv(cd, deconst.b, inbytesleft, outbuf, outbytesleft);
}
#endif
char *char_conv_str(char *dest, const char *string)
{
if (!char_conv_to)
return NULL;
if (char_conv_same)
return strcpy(dest, string);
#ifdef HAVE_ICONV
if (char_conv_use_iconv) {
/* not optimized: */
char buffer[BUFFER_SIZE];
size_t inleft = strlen(string);
size_t outleft;
size_t retlen = 0;
size_t err;
char *bufferPtr;
dest[0] = '\0';
while (inleft) {
bufferPtr = buffer;
outleft = BUFFER_SIZE;
err =
deconst_iconv(char_conv_iconv, &string, &inleft,
&bufferPtr, &outleft);
if (outleft == BUFFER_SIZE
|| (err == (size_t)-1L && errno != E2BIG)) {
return NULL;
}
memcpy(dest + retlen, buffer, BUFFER_SIZE - outleft);
retlen += BUFFER_SIZE - outleft;
dest[retlen] = '\0';
}
return dest;
}
#endif
switch (char_conv_latin1ToUtf8) {
case 1:
return latin1_to_utf8(dest, string);
case -1:
return utf8_to_latin1(dest, string);
}
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;
}
}

26
src/charConv.h
View File

@@ -1,26 +0,0 @@
/* 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
*/
#ifndef CHAR_CONV_H
#define CHAR_CONV_H
int setCharSetConversion(const char *to, const char *from);
char *char_conv_str(char *dest, const char *string);
#endif

54
src/path.c
View File

@@ -18,7 +18,6 @@
#include "path.h"
#include "log.h"
#include "charConv.h"
#include "conf.h"
#include "utf8.h"
#include "utils.h"
@@ -32,28 +31,48 @@
#endif
#endif
#include <glib.h>
const char *musicDir;
static const char *playlistDir;
static size_t music_dir_len;
static size_t playlist_dir_len;
static char *fsCharset;
static char *path_conv_charset(char *dest, const char *to,
const char *from, const char *str)
{
return setCharSetConversion(to, from) ? NULL : char_conv_str(dest, str);
}
char *fs_charset_to_utf8(char *dst, const char *str)
{
char *ret = path_conv_charset(dst, "UTF-8", fsCharset, str);
return (ret && !validUtf8String(ret, strlen(ret))) ? NULL : ret;
gchar *p;
GError *error = NULL;
p = g_convert(str, -1,
fsCharset, "utf-8",
NULL, NULL, &error);
if (p == NULL)
/* no fallback */
return NULL;
g_strlcpy(dst, p, MPD_PATH_MAX);
g_free(p);
return dst;
}
char *utf8_to_fs_charset(char *dst, const char *str)
{
char *ret = path_conv_charset(dst, fsCharset, "UTF-8", str);
return ret ? ret : strcpy(dst, str);
gchar *p;
GError *error = NULL;
p = g_convert(str, -1,
"utf-8", fsCharset,
NULL, NULL, &error);
if (p == NULL) {
/* fall back to UTF-8 */
g_error_free(error);
return strcpy(dst, str);
}
g_strlcpy(dst, p, MPD_PATH_MAX);
g_free(p);
return dst;
}
void setFsCharset(const char *charset)
@@ -67,19 +86,6 @@ void setFsCharset(const char *charset)
DEBUG("setFsCharset: fs charset is: %s\n", fsCharset);
if (setCharSetConversion("UTF-8", fsCharset) != 0) {
WARNING("fs charset conversion problem: "
"not able to convert from \"%s\" to \"%s\"\n",
fsCharset, "UTF-8");
error = 1;
}
if (setCharSetConversion(fsCharset, "UTF-8") != 0) {
WARNING("fs charset conversion problem: "
"not able to convert from \"%s\" to \"%s\"\n",
"UTF-8", fsCharset);
error = 1;
}
if (error) {
free(fsCharset);
WARNING("setting fs charset to ISO-8859-1!\n");

15
src/tag_id3.c
View File

@@ -21,9 +21,9 @@
#include "utils.h"
#include "log.h"
#include "conf.h"
#include "charConv.h"
#ifdef HAVE_ID3TAG
#include <glib.h>
#include <id3tag.h>
#endif
@@ -54,16 +54,21 @@ static id3_utf8_t * processID3FieldString (int is_id3v1, const id3_ucs4_t *ucs4,
/* use encoding field here? */
if (is_id3v1 &&
(encoding = getConfigParamValue(CONF_ID3V1_ENCODING))) {
GError *error = NULL;
isostr = id3_ucs4_latin1duplicate(ucs4);
if (mpd_unlikely(!isostr)) {
return NULL;
}
setCharSetConversion("UTF-8", encoding);
utf8 = xmalloc(strlen((char *)isostr) + 1);
utf8 = (id3_utf8_t *)char_conv_str((char *)utf8, (char *)isostr);
if (!utf8) {
utf8 = (id3_utf8_t *)
g_convert_with_fallback((const char*)isostr, -1,
encoding, "utf-8",
NULL, NULL, NULL, &error);
if (utf8 == NULL) {
DEBUG("Unable to convert %s string to UTF-8: "
"'%s'\n", encoding, isostr);
g_error_free(error);
free(isostr);
return NULL;
}