From: Pekka Riikonen <priikone@silcnet.org>
Date: Wed, 16 May 2007 06:03:01 +0000 (+0000)
Subject: 	Added silc_utf8_[c2w|w2c].
X-Git-Tag: silc.client.1.1.beta4~3
X-Git-Url: http://git.silcnet.org/gitweb/?p=silc.git;a=commitdiff_plain;h=abad048b221437e76d71d02123c2416d3dec5209

	Added silc_utf8_[c2w|w2c].
---

diff --git a/lib/silcutil/silcutf8.c b/lib/silcutil/silcutf8.c
index 65254eb5..1faf14c9 100644
--- a/lib/silcutil/silcutf8.c
+++ b/lib/silcutil/silcutf8.c
@@ -4,7 +4,7 @@
 
   Author: Pekka Riikonen <priikone@silcnet.org>
 
-  Copyright (C) 2004 - 2005 Pekka Riikonen
+  Copyright (C) 2004 - 2007 Pekka Riikonen
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -515,6 +515,67 @@ SilcUInt32 silc_utf8_decode(const unsigned char *utf8, SilcUInt32 utf8_len,
   return enclen;
 }
 
+/* UTF-8 to wide characters */
+
+SilcUInt32 silc_utf8_c2w(const unsigned char *utf8, SilcUInt32 utf8_len,
+			 SilcUInt16 *utf8_wide, SilcUInt32 utf8_wide_size)
+{
+  unsigned char *tmp;
+  SilcUInt32 tmp_len;
+  int i, k;
+
+  tmp_len = silc_utf8_decoded_len(utf8, utf8_len, SILC_STRING_BMP);
+  if (!tmp_len)
+    return 0;
+
+  if (utf8_wide_size < tmp_len / 2)
+    return 0;
+
+  memset(utf8_wide, 0, utf8_wide_size * 2);
+
+  tmp = silc_malloc(tmp_len);
+  if (!tmp)
+    return 0;
+
+  silc_utf8_decode(utf8, utf8_len, SILC_STRING_BMP, tmp, tmp_len);
+
+  for (i = 0, k = 0; i < tmp_len; i += 2, k++)
+    SILC_GET16_MSB(utf8_wide[k], tmp + i);
+
+  silc_free(tmp);
+  return k + 1;
+}
+
+/* Wide characters to UTF-8 */
+
+SilcUInt32 silc_utf8_w2c(const SilcUInt16 *wide_str,
+			 SilcUInt32 wide_str_len,
+			 unsigned char *utf8, SilcUInt32 utf8_size)
+
+{
+  unsigned char *tmp;
+  SilcUInt32 tmp_len;
+  int i, k;
+
+  if (utf8_size < wide_str_len * 2)
+    return 0;
+
+  memset(utf8, 0, utf8_size);
+
+  tmp = silc_malloc(wide_str_len * 2);
+  if (!tmp)
+    return 0;
+
+  for (i = 0, k = 0; i < wide_str_len; i += 2, k++)
+    SILC_PUT16_MSB(wide_str[k], tmp + i);
+
+  tmp_len = silc_utf8_encode(tmp, wide_str_len * 2, SILC_STRING_BMP,
+			     utf8, utf8_size);
+
+  silc_free(tmp);
+  return tmp_len;
+}
+
 /* Returns the length of UTF-8 encoded string if the `bin' of
    encoding of `bin_encoding' is encoded with silc_utf8_encode. */
 
diff --git a/lib/silcutil/silcutf8.h b/lib/silcutil/silcutf8.h
index f82142d1..1f6fe4de 100644
--- a/lib/silcutil/silcutf8.h
+++ b/lib/silcutil/silcutf8.h
@@ -4,7 +4,7 @@
 
   Author: Pekka Riikonen <priikone@silcnet.org>
 
-  Copyright (C) 2004 - 2005 Pekka Riikonen
+  Copyright (C) 2004 - 2007 Pekka Riikonen
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -74,6 +74,51 @@ SilcUInt32 silc_utf8_decode(const unsigned char *utf8, SilcUInt32 utf8_len,
 			    SilcStringEncoding bin_encoding,
 			    unsigned char *bin, SilcUInt32 bin_size);
 
+/****f* silcutil/SilcStrUtilAPI/silc_utf8_c2w
+ *
+ * SYNOPSIS
+ *
+ *    SilcUInt32 silc_utf8_c2w(const unsigned char *utf8,
+ *                             SilcUInt32 utf8_len,
+ *                             SilcUInt16 *utf8_wide,
+ *                             SilcUInt32 utf8_wide_size);
+ *
+ * DESCRIPTION
+ *
+ *    Converts UTF-8 string into UTF-8 wide character string into the
+ *    `utf8_wide' buffer of size of `utf8_wide_size' in characters.  Returns
+ *    the length of the UTF-8 wide character string or 0 on error.  The
+ *    returned length is in characters and not in bytes.  The byte length
+ *    is twice the returned character length.
+ *
+ *    If there is extra space in `utf8_wide' this will NULL terminate the
+ *    string automatically.
+ *
+ ***/
+SilcUInt32 silc_utf8_c2w(const unsigned char *utf8, SilcUInt32 utf8_len,
+			 SilcUInt16 *utf8_wide, SilcUInt32 utf8_wide_size);
+
+/****f* silcutil/SilcStrUtilAPI/silc_utf8_w2c
+ *
+ * SYNOPSIS
+ *
+ *    SilcUInt32 silc_utf8_w2c(const SilcUInt16 *wide_str,
+ *                             SilcUInt32 wide_str_len,
+ *                             unsigned char *utf8, SilcUInt32 utf8_size);
+ *
+ * DESCRIPTION
+ *
+ *    Converts UTF-8 wide character string into UTF-8 binary string into the
+ *    `utf8' buffer of size of `utf8_size' in bytes.  Returns the length of
+ *    the encoded UTF-8 string in bytes or 0 on error.
+ *
+ *    If there is extra space in `utf8' this will NULL terminate the string
+ *    automatically.
+ *
+ ***/
+SilcUInt32 silc_utf8_w2c(const SilcUInt16 *wide_str, SilcUInt32 wide_str_len,
+			 unsigned char *utf8, SilcUInt32 utf8_size);
+
 /****f* silcutil/SilcStrUtilAPI/silc_utf8_encoded_len
  *
  * SYNOPSIS
@@ -148,7 +193,7 @@ SilcBool silc_utf8_strcasecmp(const char *s1, const char *s2);
  * SYNOPSIS
  *
  *    SilcBool silc_utf8_strcasecmp(const char *s1, const char *s2,
- *                              SilcUInt32 n);
+ *                                  SilcUInt32 n);
  *
  * DESCRIPTION
  *