/* Get descriptor for character set conversion. Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include <errno.h> #include <iconv.h> #include <stdlib.h> #include <string.h> #include <gconv_int.h> #include "gconv_charset.h" iconv_t iconv_open (const char *tocode, const char *fromcode) { char *tocode_conv; char *fromcode_conv; size_t tocode_len; size_t fromcode_len; __gconv_t cd; int res; /* Normalize the name. We remove all characters beside alpha-numeric, '_', '-', '/', and '.'. */ tocode_len = strlen (tocode); tocode_conv = (char *) alloca (tocode_len + 3); strip (tocode_conv, tocode); tocode = (tocode_conv[2] == '\0' && tocode[0] != '\0' ? upstr (tocode_conv, tocode) : tocode_conv); fromcode_len = strlen (fromcode); fromcode_conv = (char *) alloca (fromcode_len + 3); strip (fromcode_conv, fromcode); fromcode = (fromcode_conv[2] == '\0' && fromcode[0] != '\0' ? upstr (fromcode_conv, fromcode) : fromcode_conv); res = __gconv_open (tocode, fromcode, &cd, 0); if (__builtin_expect (res, __GCONV_OK) != __GCONV_OK) { /* We must set the error number according to the specs. */ if (res == __GCONV_NOCONV || res == __GCONV_NODB) __set_errno (EINVAL); return (iconv_t) -1; } return (iconv_t) cd; }