From 2b5d5f86a9426eda473497f3afc96af0cfbd52be Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Sat, 27 Jan 2007 00:47:44 +0000
Subject: [PATCH] New module 'uniconv/u8-strconv-to-enc'.

---
 lib/uniconv/u8-strconv-to-enc.c   | 81 +++++++++++++++++++++++++++++++++++++++
 modules/uniconv/u8-strconv-to-enc | 27 +++++++++++++
 2 files changed, 108 insertions(+)
 create mode 100644 lib/uniconv/u8-strconv-to-enc.c
 create mode 100644 modules/uniconv/u8-strconv-to-enc

diff --git a/lib/uniconv/u8-strconv-to-enc.c b/lib/uniconv/u8-strconv-to-enc.c
new file mode 100644
index 000000000..7dee051a7
--- /dev/null
+++ b/lib/uniconv/u8-strconv-to-enc.c
@@ -0,0 +1,81 @@
+/* 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 Library General Public License as published
+   by the Free Software Foundation; either version 2, 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+/* 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 (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;
+    }
+}
diff --git a/modules/uniconv/u8-strconv-to-enc b/modules/uniconv/u8-strconv-to-enc
new file mode 100644
index 000000000..bc30b8c25
--- /dev/null
+++ b/modules/uniconv/u8-strconv-to-enc
@@ -0,0 +1,27 @@
+Description:
+Conversion from UTF-8 to legacy encodings.
+
+Files:
+lib/uniconv/u8-strconv-to-enc.c
+
+Depends-on:
+uniconv/base
+c-strcaseeq
+striconveha
+unistr/u8-check
+unistr/u8-strlen
+
+configure.ac:
+
+Makefile.am:
+lib_SOURCES += uniconv/u8-strconv-to-enc.c
+
+Include:
+"uniconv.h"
+
+License:
+LGPL
+
+Maintainer:
+Bruno Haible
+
-- 
2.11.0