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/* Conversion to UTF-8 from legacy encodings.
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Copyright (C) 2002, 2006-2007, 2009-2010 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>. */
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#include "c-strcaseeq.h"
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#include "striconveha.h"
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u8_conv_from_encoding (const char *fromcode,
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enum iconv_ilseq_handler handler,
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const char *src, size_t srclen,
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uint8_t *resultbuf, size_t *lengthp)
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if (STRCASEEQ (fromcode, "UTF-8", 'U','T','F','-','8',0,0,0,0))
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/* Conversion from UTF-8 to UTF-8. No need to go through iconv(). */
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if (u8_check ((const uint8_t *) src, srclen))
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for (i = 0; i < srclen; )
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int count = u8_mblen ((const uint8_t *) src + i, srclen - i);
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/* We can rely on count > 0 because of the previous u8_check. */
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offsets[i++] = (size_t)(-1);
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/* Memory allocation. */
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if (resultbuf != NULL && *lengthp >= srclen)
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result = (uint8_t *) malloc (srclen > 0 ? srclen : 1);
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memcpy ((char *) result, src, srclen);
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char *result = (char *) resultbuf;
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size_t length = *lengthp;
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if (mem_iconveha (src, srclen, fromcode, "UTF-8", true, handler,
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offsets, &result, &length) < 0)
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if (result == NULL) /* when (resultbuf == NULL && length == 0) */
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result = (char *) malloc (1);
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return (uint8_t *) result;