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
--- /dev/null
+++ 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;
+    }
+}