diff options
Diffstat (limited to 'lib/uniconv/u8-conv-to-enc.c')
-rw-r--r-- | lib/uniconv/u8-conv-to-enc.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/lib/uniconv/u8-conv-to-enc.c b/lib/uniconv/u8-conv-to-enc.c new file mode 100644 index 0000000..90accce --- /dev/null +++ b/lib/uniconv/u8-conv-to-enc.c @@ -0,0 +1,92 @@ +/* Conversion from UTF-8 to legacy encodings. + Copyright (C) 2002, 2006-2007, 2009 Free Software Foundation, Inc. + + This program 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 3 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +/* Written by Bruno Haible <bruno@clisp.org>. */ + +#include <config.h> + +/* Specification. */ +#include "uniconv.h" + +#include <errno.h> +#include <stdlib.h> +#include <string.h> + +#include "c-strcaseeq.h" +#include "striconveha.h" +#include "unistr.h" + +char * +u8_conv_to_encoding (const char *tocode, + enum iconv_ilseq_handler handler, + const uint8_t *src, size_t srclen, + size_t *offsets, + char *resultbuf, size_t *lengthp) +{ + if (STRCASEEQ (tocode, "UTF-8", 'U','T','F','-','8',0,0,0,0)) + { + char *result; + + /* Conversion from UTF-8 to UTF-8. No need to go through iconv(). */ +#if CONFIG_UNICODE_SAFETY + if (u8_check (src, srclen)) + { + errno = EILSEQ; + return NULL; + } +#endif + + /* Memory allocation. */ + if (resultbuf != NULL && *lengthp >= srclen) + result = resultbuf; + else + { + result = (char *) malloc (srclen > 0 ? srclen : 1); + if (result == NULL) + { + errno = ENOMEM; + return NULL; + } + } + + memcpy (result, (const char *) src, srclen); + *lengthp = srclen; + return result; + } + else + { + char *result = resultbuf; + size_t length = *lengthp; + + if (mem_iconveha ((const char *) src, srclen, + "UTF-8", tocode, + handler == iconveh_question_mark, handler, + offsets, &result, &length) < 0) + return NULL; + + if (result == NULL) /* when (resultbuf == NULL && length == 0) */ + { + result = (char *) malloc (1); + if (result == NULL) + { + errno = ENOMEM; + return NULL; + } + } + *lengthp = length; + return result; + } +} |