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#include <config.h>
#include "localcharset.h"
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#if defined __APPLE__ && defined __MACH__ && HAVE_LANGINFO_CODESET
# define DARWIN7
#endif
#if defined _WIN32 || defined __WIN32__
# define WIN32_NATIVE
#endif
#if defined __EMX__
# ifndef OS2
# define OS2
# endif
#endif
#if !defined WIN32_NATIVE && !defined ANDROID
# if HAVE_LANGINFO_CODESET
# include <langinfo.h>
# else
# if 0
# endif
# endif
# ifdef __CYGWIN__
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
# endif
#elif defined WIN32_NATIVE
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
#endif
#if defined OS2
# define INCL_DOS
# include <os2.h>
#endif
#if ENABLE_RELOCATABLE
# include "relocatable.h"
#else
# define relocate(pathname) (pathname)
#endif
#ifndef LIBDIR
# include "configmake.h"
#endif
#if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
# define ISSLASH(C) ((C) == '/' || (C) == '\\')
#endif
#ifndef DIRECTORY_SEPARATOR
# define DIRECTORY_SEPARATOR '/'
#endif
#ifndef ISSLASH
# define ISSLASH(C) ((C) == DIRECTORY_SEPARATOR)
#endif
#if HAVE_DECL_GETC_UNLOCKED
# undef getc
# define getc getc_unlocked
#endif
#if __STDC__ != 1
# define volatile
#endif
static const char * volatile charset_aliases;
static const char *
get_charset_aliases (void)
{
const char *cp;
cp = charset_aliases;
if (cp == NULL)
{
#if !(defined DARWIN7 || defined VMS || defined WIN32_NATIVE || defined __CYGWIN__)
FILE *fp;
const char *dir;
const char *base = "charset.alias";
char *file_name;
dir = getenv ("CHARSETALIASDIR");
if (dir == NULL || dir[0] == '\0')
dir = relocate (LIBDIR);
{
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
{
char *res_ptr = NULL;
size_t res_size = 0;
for (;;)
{
int c;
char buf1[50+1];
char buf2[50+1];
size_t l1, l2;
char *old_res_ptr;
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);
old_res_ptr = res_ptr;
if (res_size == 0)
{
res_size = l1 + 1 + l2 + 1;
res_ptr = (char *) malloc (res_size + 1);
}
else
{
res_size += l1 + 1 + l2 + 1;
res_ptr = (char *) realloc (res_ptr, res_size + 1);
}
if (res_ptr == NULL)
{
res_size = 0;
if (old_res_ptr != NULL)
free (old_res_ptr);
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
# if defined DARWIN7
cp = "ISO8859-1" "\0" "ISO-8859-1" "\0"
"ISO8859-2" "\0" "ISO-8859-2" "\0"
"ISO8859-4" "\0" "ISO-8859-4" "\0"
"ISO8859-5" "\0" "ISO-8859-5" "\0"
"ISO8859-7" "\0" "ISO-8859-7" "\0"
"ISO8859-9" "\0" "ISO-8859-9" "\0"
"ISO8859-13" "\0" "ISO-8859-13" "\0"
"ISO8859-15" "\0" "ISO-8859-15" "\0"
"KOI8-R" "\0" "KOI8-R" "\0"
"KOI8-U" "\0" "KOI8-U" "\0"
"CP866" "\0" "CP866" "\0"
"CP949" "\0" "CP949" "\0"
"CP1131" "\0" "CP1131" "\0"
"CP1251" "\0" "CP1251" "\0"
"eucCN" "\0" "GB2312" "\0"
"GB2312" "\0" "GB2312" "\0"
"eucJP" "\0" "EUC-JP" "\0"
"eucKR" "\0" "EUC-KR" "\0"
"Big5" "\0" "BIG5" "\0"
"Big5HKSCS" "\0" "BIG5-HKSCS" "\0"
"GBK" "\0" "GBK" "\0"
"GB18030" "\0" "GB18030" "\0"
"SJIS" "\0" "SHIFT_JIS" "\0"
"ARMSCII-8" "\0" "ARMSCII-8" "\0"
"PT154" "\0" "PT154" "\0"
"*" "\0" "UTF-8" "\0";
# endif
# if defined VMS
cp = "ISO8859-1" "\0" "ISO-8859-1" "\0"
"ISO8859-2" "\0" "ISO-8859-2" "\0"
"ISO8859-5" "\0" "ISO-8859-5" "\0"
"ISO8859-7" "\0" "ISO-8859-7" "\0"
"ISO8859-8" "\0" "ISO-8859-8" "\0"
"ISO8859-9" "\0" "ISO-8859-9" "\0"
"eucJP" "\0" "EUC-JP" "\0"
"SJIS" "\0" "SHIFT_JIS" "\0"
"DECKANJI" "\0" "DEC-KANJI" "\0"
"SDECKANJI" "\0" "EUC-JP" "\0"
"eucTW" "\0" "EUC-TW" "\0"
"DECHANYU" "\0" "DEC-HANYU" "\0"
"DECHANZI" "\0" "GB2312" "\0"
"DECKOREAN" "\0" "EUC-KR" "\0";
# endif
# if defined WIN32_NATIVE || defined __CYGWIN__
cp = "CP936" "\0" "GBK" "\0"
"CP1361" "\0" "JOHAB" "\0"
"CP20127" "\0" "ASCII" "\0"
"CP20866" "\0" "KOI8-R" "\0"
"CP20936" "\0" "GB2312" "\0"
"CP21866" "\0" "KOI8-RU" "\0"
"CP28591" "\0" "ISO-8859-1" "\0"
"CP28592" "\0" "ISO-8859-2" "\0"
"CP28593" "\0" "ISO-8859-3" "\0"
"CP28594" "\0" "ISO-8859-4" "\0"
"CP28595" "\0" "ISO-8859-5" "\0"
"CP28596" "\0" "ISO-8859-6" "\0"
"CP28597" "\0" "ISO-8859-7" "\0"
"CP28598" "\0" "ISO-8859-8" "\0"
"CP28599" "\0" "ISO-8859-9" "\0"
"CP28605" "\0" "ISO-8859-15" "\0"
"CP38598" "\0" "ISO-8859-8" "\0"
"CP51932" "\0" "EUC-JP" "\0"
"CP51936" "\0" "GB2312" "\0"
"CP51949" "\0" "EUC-KR" "\0"
"CP51950" "\0" "EUC-TW" "\0"
"CP54936" "\0" "GB18030" "\0"
"CP65001" "\0" "UTF-8" "\0";
# endif
#endif
charset_aliases = cp;
}
return cp;
}
#ifdef STATIC
STATIC
#endif
const char *
locale_charset (void)
{
const char *codeset;
const char *aliases;
#if !(defined WIN32_NATIVE || defined OS2 || defined ANDROID)
# if HAVE_LANGINFO_CODESET
codeset = nl_langinfo (CODESET);
# ifdef __CYGWIN__
if (codeset != NULL && strcmp (codeset, "US-ASCII") == 0)
{
const char *locale;
static char buf[2 + 10 + 1];
locale = getenv ("LC_ALL");
if (locale == NULL || locale[0] == '\0')
{
locale = getenv ("LC_CTYPE");
if (locale == NULL || locale[0] == '\0')
locale = getenv ("LANG");
}
if (locale != NULL && locale[0] != '\0')
{
const char *dot = strchr (locale, '.');
if (dot != NULL)
{
const char *modifier;
dot++;
modifier = strchr (dot, '@');
if (modifier == NULL)
return dot;
if (modifier - dot < sizeof (buf))
{
memcpy (buf, dot, modifier - dot);
buf [modifier - dot] = '\0';
return buf;
}
}
}
sprintf (buf, "CP%u", GetACP ());
codeset = buf;
}
# endif
# else
const char *locale = NULL;
# if 0
# 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
#elif defined WIN32_NATIVE
static char buf[2 + 10 + 1];
sprintf (buf, "CP%u", GetACP ());
codeset = buf;
#elif defined OS2
const char *locale;
static char buf[2 + 10 + 1];
ULONG cp[3];
ULONG cplen;
locale = getenv ("LC_ALL");
if (locale == NULL || locale[0] == '\0')
{
locale = getenv ("LC_CTYPE");
if (locale == NULL || locale[0] == '\0')
locale = getenv ("LANG");
}
if (locale != NULL && locale[0] != '\0')
{
const char *dot = strchr (locale, '.');
if (dot != NULL)
{
const char *modifier;
dot++;
modifier = strchr (dot, '@');
if (modifier == NULL)
return dot;
if (modifier - dot < sizeof (buf))
{
memcpy (buf, dot, modifier - dot);
buf [modifier - dot] = '\0';
return buf;
}
}
codeset = locale;
}
else
{
if (DosQueryCp (sizeof (cp), cp, &cplen))
codeset = "";
else
{
sprintf (buf, "CP%u", cp[0]);
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;
}
if (codeset[0] == '\0')
codeset = "ASCII";
return codeset;
}
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