#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#if HAVE_STDDEF_H
# include <stddef.h>
#endif
#include <stdio.h>
#if HAVE_STRING_H
# include <string.h>
#else
# include <strings.h>
#endif
#if HAVE_STDLIB_H
# include <stdlib.h>
#endif
#if defined _WIN32 || defined __WIN32__
# undef WIN32
# define WIN32
#endif
#ifndef WIN32
# if HAVE_LANGINFO_CODESET
# include <langinfo.h>
# else
# if HAVE_SETLOCALE
# include <locale.h>
# endif
# endif
#else
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
#endif
#include "gettextP.h"
#ifndef DIRECTORY_SEPARATOR
# define DIRECTORY_SEPARATOR '/'
#endif
#ifndef ISSLASH
# define ISSLASH(C) ((C) == DIRECTORY_SEPARATOR)
#endif
#if __STDC__ != 1
# define volatile
#endif
static const char * volatile charset_aliases;
static const char *get_charset_aliases PARAMS ((void));
static const char *
get_charset_aliases ()
{
const char *cp;
cp = charset_aliases;
if (cp == NULL)
{
#ifndef WIN32
FILE *fp;
const char *dir = LIBDIR;
const char *base = "charset.alias";
char *file_name;
{
size_t dir_len = strlen (dir);
size_t base_len = strlen (base);
int add_slash = (dir_len > 0 && !ISSLASH (dir[dir_len - 1]));
file_name = (char *) malloc (dir_len + add_slash + base_len + 1);
if (file_name != NULL)
{
memcpy (file_name, dir, dir_len);
if (add_slash)
file_name[dir_len] = DIRECTORY_SEPARATOR;
memcpy (file_name + dir_len + add_slash, base, base_len + 1);
}
}
if (file_name == NULL || (fp = fopen (file_name, "r")) == NULL)
cp = "";
else
{
int c;
char buf1[50+1];
char buf2[50+1];
char *res_ptr = NULL;
size_t res_size = 0;
size_t l1, l2;
for (;;)
{
c = getc (fp);
if (c == EOF)
break;
if (c == '\n' || c == ' ' || c == '\t')
continue;
if (c == '#')
{
do
c = getc (fp);
while (!(c == EOF || c == '\n'));
if (c == EOF)
break;
continue;
}
ungetc (c, fp);
if (fscanf(fp, "%50s %50s", buf1, buf2) < 2)
break;
l1 = strlen (buf1);
l2 = strlen (buf2);
if (res_size == 0)
{
res_size = l1 + 1 + l2 + 1;
res_ptr = malloc (res_size + 1);
}
else
{
res_size += l1 + 1 + l2 + 1;
res_ptr = realloc (res_ptr, res_size + 1);
}
if (res_ptr == NULL)
{
res_size = 0;
break;
}
strcpy (res_ptr + res_size - (l2 + 1) - (l1 + 1), buf1);
strcpy (res_ptr + res_size - (l2 + 1), buf2);
}
fclose (fp);
if (res_size == 0)
cp = "";
else
{
*(res_ptr + res_size) = '\0';
cp = res_ptr;
}
}
if (file_name != NULL)
free (file_name);
#else
cp = "CP936" "\0" "GBK" "\0"
"CP1361" "\0" "JOHAB" "\0";
#endif
charset_aliases = cp;
}
return cp;
}
const char *
locale_charset ()
{
const char *codeset;
const char *aliases;
#ifndef WIN32
# if HAVE_LANGINFO_CODESET
codeset = nl_langinfo (CODESET);
# else
const char *locale = NULL;
# if HAVE_SETLOCALE && 0
locale = setlocale (LC_CTYPE, NULL);
# endif
if (locale == NULL || locale[0] == '\0')
{
locale = getenv ("LC_ALL");
if (locale == NULL || locale[0] == '\0')
{
locale = getenv ("LC_CTYPE");
if (locale == NULL || locale[0] == '\0')
locale = getenv ("LANG");
}
}
codeset = locale;
# endif
#else
static char buf[2 + 10 + 1];
sprintf (buf, "CP%u", GetACP ());
codeset = buf;
#endif
if (codeset == NULL)
codeset = "";
for (aliases = get_charset_aliases ();
*aliases != '\0';
aliases += strlen (aliases) + 1, aliases += strlen (aliases) + 1)
if (strcmp (codeset, aliases) == 0
|| (aliases[0] == '*' && aliases[1] == '\0'))
{
codeset = aliases + strlen (aliases) + 1;
break;
}
return codeset;
}