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-rw-r--r--lib/uniconv/u8-strconv-to-enc.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/lib/uniconv/u8-strconv-to-enc.c b/lib/uniconv/u8-strconv-to-enc.c
new file mode 100644
index 00000000..a3f12b6b
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+++ b/lib/uniconv/u8-strconv-to-enc.c
@@ -0,0 +1,79 @@
+/* Conversion from UTF-8 to legacy encodings.
+ Copyright (C) 2002, 2006-2007 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_strconv_to_encoding (const uint8_t *string,
+ const char *tocode,
+ enum iconv_ilseq_handler handler)
+{
+ char *result;
+ size_t length;
+
+ if (STRCASEEQ (tocode, "UTF-8", 'U','T','F','-','8',0,0,0,0))
+ {
+ /* Conversion from UTF-8 to UTF-8. No need to go through iconv(). */
+ length = u8_strlen (string) + 1;
+#if CONFIG_UNICODE_SAFETY
+ if (u8_check (string, length))
+ {
+ errno = EILSEQ;
+ return NULL;
+ }
+#endif
+ result = (char *) malloc (length);
+ if (result == NULL)
+ {
+ errno = ENOMEM;
+ return NULL;
+ }
+ memcpy (result, (const char *) string, length);
+ return result;
+ }
+ else
+ {
+ result = NULL;
+ length = 0;
+ if (mem_iconveha ((const char *) string, u8_strlen (string) + 1,
+ "UTF-8", tocode,
+ handler == iconveh_question_mark, handler,
+ NULL, &result, &length) < 0)
+ return NULL;
+ /* Verify the result has exactly one NUL byte, at the end. */
+ if (!(length > 0 && result[length-1] == '\0'
+ && strlen (result) == length-1))
+ {
+ free (result);
+ errno = EILSEQ;
+ return NULL;
+ }
+ return result;
+ }
+}