1 files changed, 132 insertions, 0 deletions
diff --git a/src/libcommuni/src/3rdparty/mozilla/rdf_utils.c b/src/libcommuni/src/3rdparty/mozilla/rdf_utils.c
new file mode 100644
index 0000000..c1329f7
--- /dev/null
+++ b/src/libcommuni/src/3rdparty/mozilla/rdf_utils.c
@@ -0,0 +1,132 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/*
+   This file implements utility routines for the rdf data model.
+   For more information on this file, contact rjc or guha
+   For more information on RDF, look at the RDF section of www.mozilla.org
+*/
+
+#define kLeft1BitMask  0x80
+#define kLeft2BitsMask 0xC0
+#define kLeft3BitsMask 0xE0
+#define kLeft4BitsMask 0xF0
+#define kLeft5BitsMask 0xF8
+#define kLeft6BitsMask 0xFC
+#define kLeft7BitsMask 0xFE
+
+#define k2BytesLeadByte kLeft2BitsMask
+#define k3BytesLeadByte kLeft3BitsMask
+#define k4BytesLeadByte kLeft4BitsMask
+#define k5BytesLeadByte kLeft5BitsMask
+#define k6BytesLeadByte kLeft6BitsMask
+#define kTrialByte      kLeft1BitMask
+
+#define UTF8_1Byte(c) ( 0 == ((c) & kLeft1BitMask))
+#define UTF8_2Bytes(c) ( k2BytesLeadByte == ((c) & kLeft3BitsMask))
+#define UTF8_3Bytes(c) ( k3BytesLeadByte == ((c) & kLeft4BitsMask))
+#define UTF8_4Bytes(c) ( k4BytesLeadByte == ((c) & kLeft5BitsMask))
+#define UTF8_5Bytes(c) ( k5BytesLeadByte == ((c) & kLeft6BitsMask))
+#define UTF8_6Bytes(c) ( k6BytesLeadByte == ((c) & kLeft7BitsMask))
+#define UTF8_ValidTrialByte(c) ( kTrialByte == ((c) & kLeft2BitsMask))
+
+int IsUTF8Text(const unsigned char* utf8, int len)
+{
+   int i;
+   int j;
+   int clen;
+   for(i =0; i < len; i += clen)
+   {
+      if(UTF8_1Byte(utf8[i]))
+      {
+        clen = 1;
+      } else if(UTF8_2Bytes(utf8[i])) {
+        clen = 2;
+    /* No enough trail bytes */
+        if( (i + clen) > len)
+      return 0;
+    /* 0000 0000 - 0000 007F : should encode in less bytes */
+        if(0 ==  (utf8[i] & 0x1E ))
+          return 0;
+      } else if(UTF8_3Bytes(utf8[i])) {
+        clen = 3;
+    /* No enough trail bytes */
+        if( (i + clen) > len)
+      return 0;
+    /* a single Surrogate should not show in 3 bytes UTF8, instead, the pair should be intepreted
+       as one single UCS4 char and encoded UTF8 in 4 bytes */
+        if((0xED == utf8[i] ) && (0xA0 ==  (utf8[i+1] & 0xA0 ) ))
+          return 0;
+    /* 0000 0000 - 0000 07FF : should encode in less bytes */
+        if((0 ==  (utf8[i] & 0x0F )) && (0 ==  (utf8[i+1] & 0x20 ) ))
+          return 0;
+      } else if(UTF8_4Bytes(utf8[i])) {
+        clen = 4;
+    /* No enough trail bytes */
+        if( (i + clen) > len)
+      return 0;
+    /* 0000 0000 - 0000 FFFF : should encode in less bytes */
+        if((0 ==  (utf8[i] & 0x07 )) && (0 ==  (utf8[i+1] & 0x30 )) )
+          return 0;
+      } else if(UTF8_5Bytes(utf8[i])) {
+        clen = 5;
+    /* No enough trail bytes */
+        if( (i + clen) > len)
+      return 0;
+    /* 0000 0000 - 001F FFFF : should encode in less bytes */
+        if((0 ==  (utf8[i] & 0x03 )) && (0 ==  (utf8[i+1] & 0x38 )) )
+          return 0;
+      } else if(UTF8_6Bytes(utf8[i])) {
+        clen = 6;
+    /* No enough trail bytes */
+        if( (i + clen) > len)
+      return 0;
+    /* 0000 0000 - 03FF FFFF : should encode in less bytes */
+        if((0 ==  (utf8[i] & 0x01 )) && (0 ==  (utf8[i+1] & 0x3E )) )
+          return 0;
+      } else {
+        return 0;
+      }
+      for(j = 1; j<clen ;j++)
+      {
+    if(! UTF8_ValidTrialByte(utf8[i+j])) /* Trail bytes invalid */
+      return 0;
+      }
+   }
+   return 1;
+}