// Copyright 2006-2008 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // This file contains support for URI manipulations written in // JavaScript. // Expect $String = global.String; // Lazily initialized. var hexCharArray = 0; var hexCharCodeArray = 0; function URIAddEncodedOctetToBuffer(octet, result, index) { result[index++] = 37; // Char code of '%'. result[index++] = hexCharCodeArray[octet >> 4]; result[index++] = hexCharCodeArray[octet & 0x0F]; return index; } function URIEncodeOctets(octets, result, index) { if (hexCharCodeArray === 0) { hexCharCodeArray = [48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 65, 66, 67, 68, 69, 70]; } index = URIAddEncodedOctetToBuffer(octets[0], result, index); if (octets[1]) index = URIAddEncodedOctetToBuffer(octets[1], result, index); if (octets[2]) index = URIAddEncodedOctetToBuffer(octets[2], result, index); if (octets[3]) index = URIAddEncodedOctetToBuffer(octets[3], result, index); return index; } function URIEncodeSingle(cc, result, index) { var x = (cc >> 12) & 0xF; var y = (cc >> 6) & 63; var z = cc & 63; var octets = new $Array(3); if (cc <= 0x007F) { octets[0] = cc; } else if (cc <= 0x07FF) { octets[0] = y + 192; octets[1] = z + 128; } else { octets[0] = x + 224; octets[1] = y + 128; octets[2] = z + 128; } return URIEncodeOctets(octets, result, index); } function URIEncodePair(cc1 , cc2, result, index) { var u = ((cc1 >> 6) & 0xF) + 1; var w = (cc1 >> 2) & 0xF; var x = cc1 & 3; var y = (cc2 >> 6) & 0xF; var z = cc2 & 63; var octets = new $Array(4); octets[0] = (u >> 2) + 240; octets[1] = (((u & 3) << 4) | w) + 128; octets[2] = ((x << 4) | y) + 128; octets[3] = z + 128; return URIEncodeOctets(octets, result, index); } function URIHexCharsToCharCode(highChar, lowChar) { var highCode = HexValueOf(highChar); var lowCode = HexValueOf(lowChar); if (highCode == -1 || lowCode == -1) { throw new $URIError("URI malformed"); } return (highCode << 4) | lowCode; } function URIDecodeOctets(octets, result, index) { var value; var o0 = octets[0]; if (o0 < 0x80) { value = o0; } else if (o0 < 0xc2) { throw new $URIError("URI malformed"); } else { var o1 = octets[1]; if (o0 < 0xe0) { var a = o0 & 0x1f; if ((o1 < 0x80) || (o1 > 0xbf)) { throw new $URIError("URI malformed"); } var b = o1 & 0x3f; value = (a << 6) + b; if (value < 0x80 || value > 0x7ff) { throw new $URIError("URI malformed"); } } else { var o2 = octets[2]; if (o0 < 0xf0) { var a = o0 & 0x0f; if ((o1 < 0x80) || (o1 > 0xbf)) { throw new $URIError("URI malformed"); } var b = o1 & 0x3f; if ((o2 < 0x80) || (o2 > 0xbf)) { throw new $URIError("URI malformed"); } var c = o2 & 0x3f; value = (a << 12) + (b << 6) + c; if ((value < 0x800) || (value > 0xffff)) { throw new $URIError("URI malformed"); } } else { var o3 = octets[3]; if (o0 < 0xf8) { var a = (o0 & 0x07); if ((o1 < 0x80) || (o1 > 0xbf)) { throw new $URIError("URI malformed"); } var b = (o1 & 0x3f); if ((o2 < 0x80) || (o2 > 0xbf)) { throw new $URIError("URI malformed"); } var c = (o2 & 0x3f); if ((o3 < 0x80) || (o3 > 0xbf)) { throw new $URIError("URI malformed"); } var d = (o3 & 0x3f); value = (a << 18) + (b << 12) + (c << 6) + d; if ((value < 0x10000) || (value > 0x10ffff)) { throw new $URIError("URI malformed"); } } else { throw new $URIError("URI malformed"); } } } } if (0xD800 <= value && value <= 0xDFFF) { throw new $URIError("URI malformed"); } if (value < 0x10000) { result[index++] = value; return index; } else { result[index++] = (value >> 10) + 0xd7c0; result[index++] = (value & 0x3ff) + 0xdc00; return index; } } // ECMA-262, section 15.1.3 function Encode(uri, unescape) { var uriLength = uri.length; // We are going to pass result to %StringFromCharCodeArray // which does not expect any getters/setters installed // on the incoming array. var result = new InternalArray(uriLength); var index = 0; for (var k = 0; k < uriLength; k++) { var cc1 = uri.charCodeAt(k); if (unescape(cc1)) { result[index++] = cc1; } else { if (cc1 >= 0xDC00 && cc1 <= 0xDFFF) throw new $URIError("URI malformed"); if (cc1 < 0xD800 || cc1 > 0xDBFF) { index = URIEncodeSingle(cc1, result, index); } else { k++; if (k == uriLength) throw new $URIError("URI malformed"); var cc2 = uri.charCodeAt(k); if (cc2 < 0xDC00 || cc2 > 0xDFFF) throw new $URIError("URI malformed"); index = URIEncodePair(cc1, cc2, result, index); } } } return %StringFromCharCodeArray(result); } // ECMA-262, section 15.1.3 function Decode(uri, reserved) { var uriLength = uri.length; // We are going to pass result to %StringFromCharCodeArray // which does not expect any getters/setters installed // on the incoming array. var result = new InternalArray(uriLength); var index = 0; for (var k = 0; k < uriLength; k++) { var ch = uri.charAt(k); if (ch == '%') { if (k + 2 >= uriLength) throw new $URIError("URI malformed"); var cc = URIHexCharsToCharCode(uri.charCodeAt(++k), uri.charCodeAt(++k)); if (cc >> 7) { var n = 0; while (((cc << ++n) & 0x80) != 0) { } if (n == 1 || n > 4) throw new $URIError("URI malformed"); var octets = new $Array(n); octets[0] = cc; if (k + 3 * (n - 1) >= uriLength) throw new $URIError("URI malformed"); for (var i = 1; i < n; i++) { if (uri.charAt(++k) != '%') throw new $URIError("URI malformed"); octets[i] = URIHexCharsToCharCode(uri.charCodeAt(++k), uri.charCodeAt(++k)); } index = URIDecodeOctets(octets, result, index); } else { if (reserved(cc)) { result[index++] = 37; // Char code of '%'. result[index++] = uri.charCodeAt(k - 1); result[index++] = uri.charCodeAt(k); } else { result[index++] = cc; } } } else { result[index++] = ch.charCodeAt(0); } } result.length = index; return %StringFromCharCodeArray(result); } // ECMA-262 - 15.1.3.1. function URIDecode(uri) { var reservedPredicate = function(cc) { // #$ if (35 <= cc && cc <= 36) return true; // & if (cc == 38) return true; // +, if (43 <= cc && cc <= 44) return true; // / if (cc == 47) return true; // :; if (58 <= cc && cc <= 59) return true; // = if (cc == 61) return true; // ?@ if (63 <= cc && cc <= 64) return true; return false; }; var string = ToString(uri); return Decode(string, reservedPredicate); } // ECMA-262 - 15.1.3.2. function URIDecodeComponent(component) { var reservedPredicate = function(cc) { return false; }; var string = ToString(component); return Decode(string, reservedPredicate); } // Does the char code correspond to an alpha-numeric char. function isAlphaNumeric(cc) { // a - z if (97 <= cc && cc <= 122) return true; // A - Z if (65 <= cc && cc <= 90) return true; // 0 - 9 if (48 <= cc && cc <= 57) return true; return false; } // ECMA-262 - 15.1.3.3. function URIEncode(uri) { var unescapePredicate = function(cc) { if (isAlphaNumeric(cc)) return true; // ! if (cc == 33) return true; // #$ if (35 <= cc && cc <= 36) return true; // &'()*+,-./ if (38 <= cc && cc <= 47) return true; // :; if (58 <= cc && cc <= 59) return true; // = if (cc == 61) return true; // ?@ if (63 <= cc && cc <= 64) return true; // _ if (cc == 95) return true; // ~ if (cc == 126) return true; return false; }; var string = ToString(uri); return Encode(string, unescapePredicate); } // ECMA-262 - 15.1.3.4 function URIEncodeComponent(component) { var unescapePredicate = function(cc) { if (isAlphaNumeric(cc)) return true; // ! if (cc == 33) return true; // '()* if (39 <= cc && cc <= 42) return true; // -. if (45 <= cc && cc <= 46) return true; // _ if (cc == 95) return true; // ~ if (cc == 126) return true; return false; }; var string = ToString(component); return Encode(string, unescapePredicate); } function HexValueOf(code) { // 0-9 if (code >= 48 && code <= 57) return code - 48; // A-F if (code >= 65 && code <= 70) return code - 55; // a-f if (code >= 97 && code <= 102) return code - 87; return -1; } // Convert a character code to 4-digit hex string representation // 64 -> 0040, 62234 -> F31A. function CharCodeToHex4Str(cc) { var r = ""; if (hexCharArray === 0) { hexCharArray = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"]; } for (var i = 0; i < 4; ++i) { var c = hexCharArray[cc & 0x0F]; r = c + r; cc = cc >>> 4; } return r; } // Returns true if all digits in string s are valid hex numbers function IsValidHex(s) { for (var i = 0; i < s.length; ++i) { var cc = s.charCodeAt(i); if ((48 <= cc && cc <= 57) || (65 <= cc && cc <= 70) || (97 <= cc && cc <= 102)) { // '0'..'9', 'A'..'F' and 'a' .. 'f'. } else { return false; } } return true; } // ECMA-262 - B.2.1. function URIEscape(str) { var s = ToString(str); return %URIEscape(s); } // ECMA-262 - B.2.2. function URIUnescape(str) { var s = ToString(str); return %URIUnescape(s); } // ------------------------------------------------------------------- function SetUpUri() { %CheckIsBootstrapping(); // Set up non-enumerable URI functions on the global object and set // their names. InstallFunctions(global, DONT_ENUM, $Array( "escape", URIEscape, "unescape", URIUnescape, "decodeURI", URIDecode, "decodeURIComponent", URIDecodeComponent, "encodeURI", URIEncode, "encodeURIComponent", URIEncodeComponent )); } SetUpUri();