--- /dev/null
+/*\r
+ Copyright (c) 2008, Adobe Systems Incorporated\r
+ All rights reserved.\r
+\r
+ Redistribution and use in source and binary forms, with or without \r
+ modification, are permitted provided that the following conditions are\r
+ met:\r
+\r
+ * Redistributions of source code must retain the above copyright notice, \r
+ this list of conditions and the following disclaimer.\r
+ \r
+ * Redistributions in binary form must reproduce the above copyright\r
+ notice, this list of conditions and the following disclaimer in the \r
+ documentation and/or other materials provided with the distribution.\r
+ \r
+ * Neither the name of Adobe Systems Incorporated nor the names of its \r
+ contributors may be used to endorse or promote products derived from \r
+ this software without specific prior written permission.\r
+\r
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS\r
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,\r
+ THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR\r
+ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR \r
+ CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,\r
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,\r
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR\r
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF\r
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING\r
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS\r
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r
+*/\r
+\r
+package com.adobe.net\r
+{\r
+ import flash.utils.ByteArray;\r
+ \r
+ /**\r
+ * This class implements an efficient lookup table for URI\r
+ * character escaping. This class is only needed if you\r
+ * create a derived class of URI to handle custom URI\r
+ * syntax. This class is used internally by URI.\r
+ * \r
+ * @langversion ActionScript 3.0\r
+ * @playerversion Flash 9.0* \r
+ */\r
+ public class URIEncodingBitmap extends ByteArray\r
+ {\r
+ /**\r
+ * Constructor. Creates an encoding bitmap using the given\r
+ * string of characters as the set of characters that need\r
+ * to be URI escaped.\r
+ * \r
+ * @langversion ActionScript 3.0\r
+ * @playerversion Flash 9.0\r
+ */\r
+ public function URIEncodingBitmap(charsToEscape:String) : void\r
+ {\r
+ var i:int;\r
+ var data:ByteArray = new ByteArray();\r
+ \r
+ // Initialize our 128 bits (16 bytes) to zero\r
+ for (i = 0; i < 16; i++)\r
+ this.writeByte(0);\r
+ \r
+ data.writeUTFBytes(charsToEscape);\r
+ data.position = 0;\r
+ \r
+ while (data.bytesAvailable)\r
+ {\r
+ var c:int = data.readByte();\r
+ \r
+ if (c > 0x7f)\r
+ continue; // only escape low bytes\r
+ \r
+ var enc:int;\r
+ this.position = (c >> 3);\r
+ enc = this.readByte();\r
+ enc |= 1 << (c & 0x7);\r
+ this.position = (c >> 3);\r
+ this.writeByte(enc);\r
+ }\r
+ }\r
+ \r
+ /**\r
+ * Based on the data table contained in this object, check\r
+ * if the given character should be escaped.\r
+ * \r
+ * @param char the character to be escaped. Only the first\r
+ * character in the string is used. Any other characters\r
+ * are ignored.\r
+ * \r
+ * @return the integer value of the raw UTF8 character. For\r
+ * example, if '%' is given, the return value is 37 (0x25).\r
+ * If the character given does not need to be escaped, the\r
+ * return value is zero.\r
+ * \r
+ * @langversion ActionScript 3.0\r
+ * @playerversion Flash 9.0 \r
+ */\r
+ public function ShouldEscape(char:String) : int\r
+ {\r
+ var data:ByteArray = new ByteArray();\r
+ var c:int, mask:int;\r
+ \r
+ // write the character into a ByteArray so\r
+ // we can pull it out as a raw byte value.\r
+ data.writeUTFBytes(char);\r
+ data.position = 0;\r
+ c = data.readByte();\r
+ \r
+ if (c & 0x80)\r
+ {\r
+ // don't escape high byte characters. It can make international\r
+ // URI's unreadable. We just want to escape characters that would\r
+ // make URI syntax ambiguous.\r
+ return 0;\r
+ }\r
+ else if ((c < 0x1f) || (c == 0x7f))\r
+ {\r
+ // control characters must be escaped.\r
+ return c;\r
+ }\r
+ \r
+ this.position = (c >> 3);\r
+ mask = this.readByte();\r
+ \r
+ if (mask & (1 << (c & 0x7)))\r
+ {\r
+ // we need to escape this, return the numeric value\r
+ // of the character\r
+ return c;\r
+ }\r
+ else\r
+ {\r
+ return 0;\r
+ }\r
+ }\r
+ }\r
+}
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fnp / redakcja.git / blobdiff