X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Flocalcharset.c;h=10c69b067d5f19d4a5639920538c3f8f2d04482a;hb=8de557e31178699dd6e839850056f0653cdfba89;hp=bc5587bf6015ca1a45070736eb9630e2accaa7e4;hpb=68801dc104935a92aaf4e094181f9c3116f1693d;p=gnulib.git diff --git a/lib/localcharset.c b/lib/localcharset.c index bc5587bf6..10c69b067 100644 --- a/lib/localcharset.c +++ b/lib/localcharset.c @@ -1,28 +1,30 @@ /* Determine a canonical name for the current locale's character encoding. - Copyright (C) 2000-2002 Free Software Foundation, Inc. + Copyright (C) 2000-2004 Free Software Foundation, Inc. - This program is free software; you can redistribute it and/or modify it - under the terms of the GNU Library General Public License as published - by the Free Software Foundation; either version 2, or (at your option) + 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, 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 - Library General Public License for more details. + 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 Library 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. */ + 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ -/* Written by Bruno Haible . */ +/* Written by Bruno Haible . */ #ifdef HAVE_CONFIG_H # include #endif +/* Specification. */ +#include "localcharset.h" + #if HAVE_STDDEF_H # include #endif @@ -64,8 +66,14 @@ # include #endif -#if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__ - /* Win32, OS/2, DOS */ +#if ENABLE_RELOCATABLE +# include "relocatable.h" +#else +# define relocate(pathname) (pathname) +#endif + +#if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__ + /* Win32, Cygwin, OS/2, DOS */ # define ISSLASH(C) ((C) == '/' || (C) == '\\') #endif @@ -77,7 +85,7 @@ # define ISSLASH(C) ((C) == DIRECTORY_SEPARATOR) #endif -#ifdef HAVE_GETC_UNLOCKED +#if HAVE_DECL_GETC_UNLOCKED # undef getc # define getc getc_unlocked #endif @@ -105,12 +113,18 @@ get_charset_aliases () cp = charset_aliases; if (cp == NULL) { -#if !defined WIN32 +#if !(defined VMS || defined WIN32) FILE *fp; - const char *dir = LIBDIR; + const char *dir; const char *base = "charset.alias"; char *file_name; + /* Make it possible to override the charset.alias location. This is + necessary for running the testsuite before "make install". */ + dir = getenv ("CHARSETALIASDIR"); + if (dir == NULL || dir[0] == '\0') + dir = relocate (LIBDIR); + /* Concatenate dir and base into freshly allocated file_name. */ { size_t dir_len = strlen (dir); @@ -132,15 +146,17 @@ get_charset_aliases () else { /* Parse the file's contents. */ - int c; - char buf1[50+1]; - char buf2[50+1]; char *res_ptr = NULL; size_t res_size = 0; - size_t l1, l2; 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; @@ -161,6 +177,7 @@ get_charset_aliases () break; l1 = strlen (buf1); l2 = strlen (buf2); + old_res_ptr = res_ptr; if (res_size == 0) { res_size = l1 + 1 + l2 + 1; @@ -175,6 +192,8 @@ get_charset_aliases () { /* Out of memory. */ res_size = 0; + if (old_res_ptr != NULL) + free (old_res_ptr); break; } strcpy (res_ptr + res_size - (l2 + 1) - (l1 + 1), buf1); @@ -195,13 +214,51 @@ get_charset_aliases () #else +# if defined VMS + /* To avoid the troubles of an extra file charset.alias_vms in the + sources of many GNU packages, simply inline the aliases here. */ + /* The list of encodings is taken from the OpenVMS 7.3-1 documentation + "Compaq C Run-Time Library Reference Manual for OpenVMS systems" + section 10.7 "Handling Different Character Sets". */ + 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" + /* Japanese */ + "eucJP" "\0" "EUC-JP" "\0" + "SJIS" "\0" "SHIFT_JIS" "\0" + "DECKANJI" "\0" "DEC-KANJI" "\0" + "SDECKANJI" "\0" "EUC-JP" "\0" + /* Chinese */ + "eucTW" "\0" "EUC-TW" "\0" + "DECHANYU" "\0" "DEC-HANYU" "\0" + "DECHANZI" "\0" "GB2312" "\0" + /* Korean */ + "DECKOREAN" "\0" "EUC-KR" "\0"; +# endif + +# if defined WIN32 /* To avoid the troubles of installing a separate file in the same directory as the DLL and of retrieving the DLL's directory at runtime, simply inline the aliases here. */ -# if defined WIN32 cp = "CP936" "\0" "GBK" "\0" - "CP1361" "\0" "JOHAB" "\0"; + "CP1361" "\0" "JOHAB" "\0" + "CP20127" "\0" "ASCII" "\0" + "CP20866" "\0" "KOI8-R" "\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"; # endif #endif @@ -267,7 +324,7 @@ locale_charset () static char buf[2 + 10 + 1]; - /* Win32 has a function returning the locale's codepage as a number. */ + /* Woe32 has a function returning the locale's codepage as a number. */ sprintf (buf, "CP%u", GetACP ()); codeset = buf; @@ -341,5 +398,11 @@ locale_charset () break; } + /* Don't return an empty string. GNU libc and GNU libiconv interpret + the empty string as denoting "the locale's character encoding", + thus GNU libiconv would call this function a second time. */ + if (codeset[0] == '\0') + codeset = "ASCII"; + return codeset; }