| // 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 relies on the fact that the following declaration has been made |
| // in runtime.js: |
| // const $String = global.String; |
| // const $NaN = 0/0; |
| |
| |
| // Set the String function and constructor. |
| %SetCode($String, function(x) { |
| var value = %_ArgumentsLength() == 0 ? '' : ToString(x); |
| if (%IsConstructCall()) { |
| %_SetValueOf(this, value); |
| } else { |
| return value; |
| } |
| }); |
| |
| %FunctionSetPrototype($String, new $String()); |
| |
| // ECMA-262 section 15.5.4.2 |
| function StringToString() { |
| if (!IS_STRING(this) && !%HasStringClass(this)) |
| throw new $TypeError('String.prototype.toString is not generic'); |
| return %_ValueOf(this); |
| } |
| |
| |
| // ECMA-262 section 15.5.4.3 |
| function StringValueOf() { |
| if (!IS_STRING(this) && !%HasStringClass(this)) |
| throw new $TypeError('String.prototype.valueOf is not generic'); |
| return %_ValueOf(this); |
| } |
| |
| |
| // ECMA-262, section 15.5.4.4 |
| function StringCharAt(pos) { |
| var char_code = %_FastCharCodeAt(this, index); |
| if (!%_IsSmi(char_code)) { |
| var subject = ToString(this); |
| var index = TO_INTEGER(pos); |
| if (index >= subject.length || index < 0) return ""; |
| char_code = %StringCharCodeAt(subject, index); |
| } |
| return %CharFromCode(char_code); |
| } |
| |
| |
| // ECMA-262 section 15.5.4.5 |
| function StringCharCodeAt(pos) { |
| var fast_answer = %_FastCharCodeAt(this, pos); |
| if (%_IsSmi(fast_answer)) { |
| return fast_answer; |
| } |
| var subject = ToString(this); |
| var index = TO_INTEGER(pos); |
| return %StringCharCodeAt(subject, index); |
| } |
| |
| |
| // ECMA-262, section 15.5.4.6 |
| function StringConcat() { |
| var len = %_ArgumentsLength(); |
| var parts = new $Array(len + 1); |
| parts[0] = ToString(this); |
| for (var i = 0; i < len; i++) |
| parts[i + 1] = ToString(%_Arguments(i)); |
| return parts.join(''); |
| } |
| |
| // Match ES3 and Safari |
| %FunctionSetLength(StringConcat, 1); |
| |
| |
| // ECMA-262 section 15.5.4.7 |
| function StringIndexOf(searchString /* position */) { // length == 1 |
| var subject_str = ToString(this); |
| var pattern_str = ToString(searchString); |
| var subject_str_len = subject_str.length; |
| var pattern_str_len = pattern_str.length; |
| var index = 0; |
| if (%_ArgumentsLength() > 1) { |
| var arg1 = %_Arguments(1); // position |
| index = TO_INTEGER(arg1); |
| } |
| if (index < 0) index = 0; |
| if (index > subject_str_len) index = subject_str_len; |
| if (pattern_str_len + index > subject_str_len) return -1; |
| return %StringIndexOf(subject_str, pattern_str, index); |
| } |
| |
| |
| // ECMA-262 section 15.5.4.8 |
| function StringLastIndexOf(searchString /* position */) { // length == 1 |
| var sub = ToString(this); |
| var subLength = sub.length; |
| var pat = ToString(searchString); |
| var patLength = pat.length; |
| var index = subLength - patLength; |
| if (%_ArgumentsLength() > 1) { |
| var position = ToNumber(%_Arguments(1)); |
| if (!$isNaN(position)) { |
| position = TO_INTEGER(position); |
| if (position < 0) { |
| position = 0; |
| } |
| if (position + patLength < subLength) { |
| index = position |
| } |
| } |
| } |
| if (index < 0) { |
| return -1; |
| } |
| return %StringLastIndexOf(sub, pat, index); |
| } |
| |
| |
| // ECMA-262 section 15.5.4.9 |
| // |
| // This function is implementation specific. For now, we do not |
| // do anything locale specific. |
| function StringLocaleCompare(other) { |
| if (%_ArgumentsLength() === 0) return 0; |
| |
| var this_str = ToString(this); |
| var other_str = ToString(other); |
| return %StringLocaleCompare(this_str, other_str); |
| } |
| |
| |
| // ECMA-262 section 15.5.4.10 |
| function StringMatch(regexp) { |
| if (!IS_REGEXP(regexp)) regexp = new ORIGINAL_REGEXP(regexp); |
| var subject = ToString(this); |
| |
| if (!regexp.global) return regexp.exec(subject); |
| %_Log('regexp', 'regexp-match,%0S,%1r', [subject, regexp]); |
| // lastMatchInfo is defined in regexp-delay.js. |
| return %StringMatch(subject, regexp, lastMatchInfo); |
| } |
| |
| |
| // SubString is an internal function that returns the sub string of 'string'. |
| // If resulting string is of length 1, we use the one character cache |
| // otherwise we call the runtime system. |
| function SubString(string, start, end) { |
| // Use the one character string cache. |
| if (start + 1 == end) { |
| var char_code = %_FastCharCodeAt(string, start); |
| if (!%_IsSmi(char_code)) { |
| char_code = %StringCharCodeAt(string, start); |
| } |
| return %CharFromCode(char_code); |
| } |
| return %StringSlice(string, start, end); |
| } |
| |
| |
| // ECMA-262, section 15.5.4.11 |
| function StringReplace(search, replace) { |
| var subject = ToString(this); |
| |
| // Delegate to one of the regular expression variants if necessary. |
| if (IS_REGEXP(search)) { |
| %_Log('regexp', 'regexp-replace,%0r,%1S', [search, subject]); |
| if (IS_FUNCTION(replace)) { |
| return StringReplaceRegExpWithFunction(subject, search, replace); |
| } else { |
| return StringReplaceRegExp(subject, search, replace); |
| } |
| } |
| |
| // Convert the search argument to a string and search for it. |
| search = ToString(search); |
| var start = %StringIndexOf(subject, search, 0); |
| if (start < 0) return subject; |
| var end = start + search.length; |
| |
| var builder = new ReplaceResultBuilder(subject); |
| // prefix |
| builder.addSpecialSlice(0, start); |
| |
| // Compute the string to replace with. |
| if (IS_FUNCTION(replace)) { |
| builder.add(replace.call(null, search, start, subject)); |
| } else { |
| reusableMatchInfo[CAPTURE0] = start; |
| reusableMatchInfo[CAPTURE1] = end; |
| ExpandReplacement(ToString(replace), subject, reusableMatchInfo, builder); |
| } |
| |
| // suffix |
| builder.addSpecialSlice(end, subject.length); |
| |
| return builder.generate(); |
| } |
| |
| |
| // This has the same size as the lastMatchInfo array, and can be used for |
| // functions that expect that structure to be returned. It is used when the |
| // needle is a string rather than a regexp. In this case we can't update |
| // lastMatchArray without erroneously affecting the properties on the global |
| // RegExp object. |
| var reusableMatchInfo = [2, "", "", -1, -1]; |
| |
| |
| // Helper function for regular expressions in String.prototype.replace. |
| function StringReplaceRegExp(subject, regexp, replace) { |
| replace = ToString(replace); |
| return %StringReplaceRegExpWithString(subject, |
| regexp, |
| replace, |
| lastMatchInfo); |
| }; |
| |
| |
| // Expand the $-expressions in the string and return a new string with |
| // the result. |
| function ExpandReplacement(string, subject, matchInfo, builder) { |
| var next = %StringIndexOf(string, '$', 0); |
| if (next < 0) { |
| builder.add(string); |
| return; |
| } |
| |
| // Compute the number of captures; see ECMA-262, 15.5.4.11, p. 102. |
| var m = NUMBER_OF_CAPTURES(matchInfo) >> 1; // Includes the match. |
| |
| if (next > 0) builder.add(SubString(string, 0, next)); |
| var length = string.length; |
| |
| while (true) { |
| var expansion = '$'; |
| var position = next + 1; |
| if (position < length) { |
| var peek = %_FastCharCodeAt(string, position); |
| if (!%_IsSmi(peek)) { |
| peek = %StringCharCodeAt(string, position); |
| } |
| if (peek == 36) { // $$ |
| ++position; |
| builder.add('$'); |
| } else if (peek == 38) { // $& - match |
| ++position; |
| builder.addSpecialSlice(matchInfo[CAPTURE0], |
| matchInfo[CAPTURE1]); |
| } else if (peek == 96) { // $` - prefix |
| ++position; |
| builder.addSpecialSlice(0, matchInfo[CAPTURE0]); |
| } else if (peek == 39) { // $' - suffix |
| ++position; |
| builder.addSpecialSlice(matchInfo[CAPTURE1], subject.length); |
| } else if (peek >= 48 && peek <= 57) { // $n, 0 <= n <= 9 |
| ++position; |
| var n = peek - 48; |
| if (position < length) { |
| peek = %_FastCharCodeAt(string, position); |
| if (!%_IsSmi(peek)) { |
| peek = %StringCharCodeAt(string, position); |
| } |
| // $nn, 01 <= nn <= 99 |
| if (n != 0 && peek == 48 || peek >= 49 && peek <= 57) { |
| var nn = n * 10 + (peek - 48); |
| if (nn < m) { |
| // If the two digit capture reference is within range of |
| // the captures, we use it instead of the single digit |
| // one. Otherwise, we fall back to using the single |
| // digit reference. This matches the behavior of |
| // SpiderMonkey. |
| ++position; |
| n = nn; |
| } |
| } |
| } |
| if (0 < n && n < m) { |
| addCaptureString(builder, matchInfo, n); |
| } else { |
| // Because of the captures range check in the parsing of two |
| // digit capture references, we can only enter here when a |
| // single digit capture reference is outside the range of |
| // captures. |
| builder.add('$'); |
| --position; |
| } |
| } else { |
| builder.add('$'); |
| } |
| } else { |
| builder.add('$'); |
| } |
| |
| // Go the the next $ in the string. |
| next = %StringIndexOf(string, '$', position); |
| |
| // Return if there are no more $ characters in the string. If we |
| // haven't reached the end, we need to append the suffix. |
| if (next < 0) { |
| if (position < length) { |
| builder.add(SubString(string, position, length)); |
| } |
| return; |
| } |
| |
| // Append substring between the previous and the next $ character. |
| builder.add(SubString(string, position, next)); |
| } |
| }; |
| |
| |
| // Compute the string of a given regular expression capture. |
| function CaptureString(string, lastCaptureInfo, index) { |
| // Scale the index. |
| var scaled = index << 1; |
| // Compute start and end. |
| var start = lastCaptureInfo[CAPTURE(scaled)]; |
| var end = lastCaptureInfo[CAPTURE(scaled + 1)]; |
| // If either start or end is missing return undefined. |
| if (start < 0 || end < 0) return; |
| return SubString(string, start, end); |
| }; |
| |
| |
| // Add the string of a given regular expression capture to the |
| // ReplaceResultBuilder |
| function addCaptureString(builder, matchInfo, index) { |
| // Scale the index. |
| var scaled = index << 1; |
| // Compute start and end. |
| var start = matchInfo[CAPTURE(scaled)]; |
| var end = matchInfo[CAPTURE(scaled + 1)]; |
| // If either start or end is missing return. |
| if (start < 0 || end <= start) return; |
| builder.addSpecialSlice(start, end); |
| }; |
| |
| |
| // Helper function for replacing regular expressions with the result of a |
| // function application in String.prototype.replace. The function application |
| // must be interleaved with the regexp matching (contrary to ECMA-262 |
| // 15.5.4.11) to mimic SpiderMonkey and KJS behavior when the function uses |
| // the static properties of the RegExp constructor. Example: |
| // 'abcd'.replace(/(.)/g, function() { return RegExp.$1; } |
| // should be 'abcd' and not 'dddd' (or anything else). |
| function StringReplaceRegExpWithFunction(subject, regexp, replace) { |
| var result = new ReplaceResultBuilder(subject); |
| var lastMatchInfo = DoRegExpExec(regexp, subject, 0); |
| if (IS_NULL(lastMatchInfo)) return subject; |
| |
| // There's at least one match. If the regexp is global, we have to loop |
| // over all matches. The loop is not in C++ code here like the one in |
| // RegExp.prototype.exec, because of the interleaved function application. |
| // Unfortunately, that means this code is nearly duplicated, here and in |
| // jsregexp.cc. |
| if (regexp.global) { |
| var previous = 0; |
| do { |
| result.addSpecialSlice(previous, lastMatchInfo[CAPTURE0]); |
| var startOfMatch = lastMatchInfo[CAPTURE0]; |
| previous = lastMatchInfo[CAPTURE1]; |
| result.add(ApplyReplacementFunction(replace, lastMatchInfo, subject)); |
| // Can't use lastMatchInfo any more from here, since the function could |
| // overwrite it. |
| // Continue with the next match. |
| // Increment previous if we matched an empty string, as per ECMA-262 |
| // 15.5.4.10. |
| if (previous == startOfMatch) { |
| // Add the skipped character to the output, if any. |
| if (previous < subject.length) { |
| result.addSpecialSlice(previous, previous + 1); |
| } |
| previous++; |
| } |
| |
| // Per ECMA-262 15.10.6.2, if the previous index is greater than the |
| // string length, there is no match |
| lastMatchInfo = (previous > subject.length) |
| ? null |
| : DoRegExpExec(regexp, subject, previous); |
| } while (!IS_NULL(lastMatchInfo)); |
| |
| // Tack on the final right substring after the last match, if necessary. |
| if (previous < subject.length) { |
| result.addSpecialSlice(previous, subject.length); |
| } |
| } else { // Not a global regexp, no need to loop. |
| result.addSpecialSlice(0, lastMatchInfo[CAPTURE0]); |
| var endOfMatch = lastMatchInfo[CAPTURE1]; |
| result.add(ApplyReplacementFunction(replace, lastMatchInfo, subject)); |
| // Can't use lastMatchInfo any more from here, since the function could |
| // overwrite it. |
| result.addSpecialSlice(endOfMatch, subject.length); |
| } |
| |
| return result.generate(); |
| } |
| |
| |
| // Helper function to apply a string replacement function once. |
| function ApplyReplacementFunction(replace, lastMatchInfo, subject) { |
| // Compute the parameter list consisting of the match, captures, index, |
| // and subject for the replace function invocation. |
| var index = lastMatchInfo[CAPTURE0]; |
| // The number of captures plus one for the match. |
| var m = NUMBER_OF_CAPTURES(lastMatchInfo) >> 1; |
| if (m == 1) { |
| var s = CaptureString(subject, lastMatchInfo, 0); |
| // Don't call directly to avoid exposing the built-in global object. |
| return ToString(replace.call(null, s, index, subject)); |
| } |
| var parameters = $Array(m + 2); |
| for (var j = 0; j < m; j++) { |
| parameters[j] = CaptureString(subject, lastMatchInfo, j); |
| } |
| parameters[j] = index; |
| parameters[j + 1] = subject; |
| return ToString(replace.apply(null, parameters)); |
| } |
| |
| |
| // ECMA-262 section 15.5.4.12 |
| function StringSearch(re) { |
| var regexp = new ORIGINAL_REGEXP(re); |
| var s = ToString(this); |
| var last_idx = regexp.lastIndex; // keep old lastIndex |
| regexp.lastIndex = 0; // ignore re.global property |
| var result = regexp.exec(s); |
| regexp.lastIndex = last_idx; // restore lastIndex |
| if (result == null) |
| return -1; |
| else |
| return result.index; |
| } |
| |
| |
| // ECMA-262 section 15.5.4.13 |
| function StringSlice(start, end) { |
| var s = ToString(this); |
| var s_len = s.length; |
| var start_i = TO_INTEGER(start); |
| var end_i = s_len; |
| if (end !== void 0) |
| end_i = TO_INTEGER(end); |
| |
| if (start_i < 0) { |
| start_i += s_len; |
| if (start_i < 0) |
| start_i = 0; |
| } else { |
| if (start_i > s_len) |
| start_i = s_len; |
| } |
| |
| if (end_i < 0) { |
| end_i += s_len; |
| if (end_i < 0) |
| end_i = 0; |
| } else { |
| if (end_i > s_len) |
| end_i = s_len; |
| } |
| |
| var num_c = end_i - start_i; |
| if (num_c < 0) |
| num_c = 0; |
| |
| return SubString(s, start_i, start_i + num_c); |
| } |
| |
| |
| // ECMA-262 section 15.5.4.14 |
| function StringSplit(separator, limit) { |
| var subject = ToString(this); |
| var result = []; |
| var lim = (limit === void 0) ? 0xffffffff : ToUint32(limit); |
| |
| if (lim === 0) return result; |
| |
| // ECMA-262 says that if separator is undefined, the result should |
| // be an array of size 1 containing the entire string. SpiderMonkey |
| // and KJS have this behaviour only when no separator is given. If |
| // undefined is explicitly given, they convert it to a string and |
| // use that. We do as SpiderMonkey and KJS. |
| if (%_ArgumentsLength() === 0) { |
| result[result.length] = subject; |
| return result; |
| } |
| |
| var length = subject.length; |
| var currentIndex = 0; |
| var startIndex = 0; |
| |
| var sep; |
| if (IS_REGEXP(separator)) { |
| sep = separator; |
| %_Log('regexp', 'regexp-split,%0S,%1r', [subject, sep]); |
| } else { |
| sep = ToString(separator); |
| } |
| |
| if (length === 0) { |
| if (splitMatch(sep, subject, 0, 0) != null) return result; |
| result[result.length] = subject; |
| return result; |
| } |
| |
| while (true) { |
| |
| if (startIndex === length) { |
| result[result.length] = subject.slice(currentIndex, length); |
| return result; |
| } |
| |
| var lastMatchInfo = splitMatch(sep, subject, currentIndex, startIndex); |
| |
| if (IS_NULL(lastMatchInfo)) { |
| result[result.length] = subject.slice(currentIndex, length); |
| return result; |
| } |
| |
| var endIndex = lastMatchInfo[CAPTURE1]; |
| |
| // We ignore a zero-length match at the currentIndex. |
| if (startIndex === endIndex && endIndex === currentIndex) { |
| startIndex++; |
| continue; |
| } |
| |
| result[result.length] = |
| SubString(subject, currentIndex, lastMatchInfo[CAPTURE0]); |
| if (result.length === lim) return result; |
| |
| for (var i = 2; i < NUMBER_OF_CAPTURES(lastMatchInfo); i += 2) { |
| var start = lastMatchInfo[CAPTURE(i)]; |
| var end = lastMatchInfo[CAPTURE(i + 1)]; |
| if (start != -1 && end != -1) { |
| result[result.length] = SubString(subject, |
| lastMatchInfo[CAPTURE(i)], |
| lastMatchInfo[CAPTURE(i + 1)]); |
| } else { |
| result[result.length] = void 0; |
| } |
| if (result.length === lim) return result; |
| } |
| |
| startIndex = currentIndex = endIndex; |
| } |
| } |
| |
| |
| // ECMA-262 section 15.5.4.14 |
| // Helper function used by split. This version returns the lastMatchInfo |
| // instead of allocating a new array with basically the same information. |
| function splitMatch(separator, subject, current_index, start_index) { |
| if (IS_REGEXP(separator)) { |
| var lastMatchInfo = DoRegExpExec(separator, subject, start_index); |
| if (lastMatchInfo == null) return null; |
| // Section 15.5.4.14 paragraph two says that we do not allow zero length |
| // matches at the end of the string. |
| if (lastMatchInfo[CAPTURE0] === subject.length) return null; |
| return lastMatchInfo; |
| } |
| |
| var separatorIndex = subject.indexOf(separator, start_index); |
| if (separatorIndex === -1) return null; |
| |
| reusableMatchInfo[CAPTURE0] = separatorIndex; |
| reusableMatchInfo[CAPTURE1] = separatorIndex + separator.length; |
| return reusableMatchInfo; |
| }; |
| |
| |
| // ECMA-262 section 15.5.4.15 |
| function StringSubstring(start, end) { |
| var s = ToString(this); |
| var s_len = s.length; |
| var start_i = TO_INTEGER(start); |
| var end_i = s_len; |
| if (!IS_UNDEFINED(end)) |
| end_i = TO_INTEGER(end); |
| |
| if (start_i < 0) start_i = 0; |
| if (start_i > s_len) start_i = s_len; |
| if (end_i < 0) end_i = 0; |
| if (end_i > s_len) end_i = s_len; |
| |
| if (start_i > end_i) { |
| var tmp = end_i; |
| end_i = start_i; |
| start_i = tmp; |
| } |
| |
| return SubString(s, start_i, end_i); |
| } |
| |
| |
| // This is not a part of ECMA-262. |
| function StringSubstr(start, n) { |
| var s = ToString(this); |
| var len; |
| |
| // Correct n: If not given, set to string length; if explicitly |
| // set to undefined, zero, or negative, returns empty string. |
| if (n === void 0) { |
| len = s.length; |
| } else { |
| len = TO_INTEGER(n); |
| if (len <= 0) return ''; |
| } |
| |
| // Correct start: If not given (or undefined), set to zero; otherwise |
| // convert to integer and handle negative case. |
| if (start === void 0) { |
| start = 0; |
| } else { |
| start = TO_INTEGER(start); |
| // If positive, and greater than or equal to the string length, |
| // return empty string. |
| if (start >= s.length) return ''; |
| // If negative and absolute value is larger than the string length, |
| // use zero. |
| if (start < 0) { |
| start += s.length; |
| if (start < 0) start = 0; |
| } |
| } |
| |
| var end = start + len; |
| if (end > s.length) end = s.length; |
| |
| return SubString(s, start, end); |
| } |
| |
| |
| // ECMA-262, 15.5.4.16 |
| function StringToLowerCase() { |
| return %StringToLowerCase(ToString(this)); |
| } |
| |
| |
| // ECMA-262, 15.5.4.17 |
| function StringToLocaleLowerCase() { |
| return %StringToLowerCase(ToString(this)); |
| } |
| |
| |
| // ECMA-262, 15.5.4.18 |
| function StringToUpperCase() { |
| return %StringToUpperCase(ToString(this)); |
| } |
| |
| |
| // ECMA-262, 15.5.4.19 |
| function StringToLocaleUpperCase() { |
| return %StringToUpperCase(ToString(this)); |
| } |
| |
| |
| // ECMA-262, section 15.5.3.2 |
| function StringFromCharCode(code) { |
| var n = %_ArgumentsLength(); |
| if (n == 1) return %CharFromCode(ToNumber(code) & 0xffff) |
| |
| // NOTE: This is not super-efficient, but it is necessary because we |
| // want to avoid converting to numbers from within the virtual |
| // machine. Maybe we can find another way of doing this? |
| var codes = new $Array(n); |
| for (var i = 0; i < n; i++) codes[i] = ToNumber(%_Arguments(i)); |
| return %StringFromCharCodeArray(codes); |
| } |
| |
| |
| // Helper function for very basic XSS protection. |
| function HtmlEscape(str) { |
| return ToString(str).replace(/</g, "<") |
| .replace(/>/g, ">") |
| .replace(/"/g, """) |
| .replace(/'/g, "'"); |
| }; |
| |
| |
| // Compatibility support for KJS. |
| // Tested by mozilla/js/tests/js1_5/Regress/regress-276103.js. |
| function StringLink(s) { |
| return "<a href=\"" + HtmlEscape(s) + "\">" + this + "</a>"; |
| } |
| |
| |
| function StringAnchor(name) { |
| return "<a name=\"" + HtmlEscape(name) + "\">" + this + "</a>"; |
| } |
| |
| |
| function StringFontcolor(color) { |
| return "<font color=\"" + HtmlEscape(color) + "\">" + this + "</font>"; |
| } |
| |
| |
| function StringFontsize(size) { |
| return "<font size=\"" + HtmlEscape(size) + "\">" + this + "</font>"; |
| } |
| |
| |
| function StringBig() { |
| return "<big>" + this + "</big>"; |
| } |
| |
| |
| function StringBlink() { |
| return "<blink>" + this + "</blink>"; |
| } |
| |
| |
| function StringBold() { |
| return "<b>" + this + "</b>"; |
| } |
| |
| |
| function StringFixed() { |
| return "<tt>" + this + "</tt>"; |
| } |
| |
| |
| function StringItalics() { |
| return "<i>" + this + "</i>"; |
| } |
| |
| |
| function StringSmall() { |
| return "<small>" + this + "</small>"; |
| } |
| |
| |
| function StringStrike() { |
| return "<strike>" + this + "</strike>"; |
| } |
| |
| |
| function StringSub() { |
| return "<sub>" + this + "</sub>"; |
| } |
| |
| |
| function StringSup() { |
| return "<sup>" + this + "</sup>"; |
| } |
| |
| |
| // StringBuilder support. |
| |
| function StringBuilder() { |
| this.elements = new $Array(); |
| } |
| |
| |
| function ReplaceResultBuilder(str) { |
| this.elements = new $Array(); |
| this.special_string = str; |
| } |
| |
| |
| ReplaceResultBuilder.prototype.add = |
| StringBuilder.prototype.add = function(str) { |
| if (!IS_STRING(str)) str = ToString(str); |
| if (str.length > 0) { |
| var elements = this.elements; |
| elements[elements.length] = str; |
| } |
| } |
| |
| |
| ReplaceResultBuilder.prototype.addSpecialSlice = function(start, end) { |
| var len = end - start; |
| if (len == 0) return; |
| var elements = this.elements; |
| if (start >= 0 && len >= 0 && start < 0x80000 && len < 0x800) { |
| elements[elements.length] = (start << 11) + len; |
| } else { |
| elements[elements.length] = SubString(this.special_string, start, end); |
| } |
| } |
| |
| |
| StringBuilder.prototype.generate = function() { |
| return %StringBuilderConcat(this.elements, ""); |
| } |
| |
| |
| ReplaceResultBuilder.prototype.generate = function() { |
| return %StringBuilderConcat(this.elements, this.special_string); |
| } |
| |
| |
| function StringToJSON(key) { |
| return CheckJSONPrimitive(this.valueOf()); |
| } |
| |
| |
| // ------------------------------------------------------------------- |
| |
| function SetupString() { |
| // Setup the constructor property on the String prototype object. |
| %SetProperty($String.prototype, "constructor", $String, DONT_ENUM); |
| |
| |
| // Setup the non-enumerable functions on the String object. |
| InstallFunctions($String, DONT_ENUM, $Array( |
| "fromCharCode", StringFromCharCode |
| )); |
| |
| |
| // Setup the non-enumerable functions on the String prototype object. |
| InstallFunctionsOnHiddenPrototype($String.prototype, DONT_ENUM, $Array( |
| "valueOf", StringValueOf, |
| "toString", StringToString, |
| "charAt", StringCharAt, |
| "charCodeAt", StringCharCodeAt, |
| "concat", StringConcat, |
| "indexOf", StringIndexOf, |
| "lastIndexOf", StringLastIndexOf, |
| "localeCompare", StringLocaleCompare, |
| "match", StringMatch, |
| "replace", StringReplace, |
| "search", StringSearch, |
| "slice", StringSlice, |
| "split", StringSplit, |
| "substring", StringSubstring, |
| "substr", StringSubstr, |
| "toLowerCase", StringToLowerCase, |
| "toLocaleLowerCase", StringToLocaleLowerCase, |
| "toUpperCase", StringToUpperCase, |
| "toLocaleUpperCase", StringToLocaleUpperCase, |
| "link", StringLink, |
| "anchor", StringAnchor, |
| "fontcolor", StringFontcolor, |
| "fontsize", StringFontsize, |
| "big", StringBig, |
| "blink", StringBlink, |
| "bold", StringBold, |
| "fixed", StringFixed, |
| "italics", StringItalics, |
| "small", StringSmall, |
| "strike", StringStrike, |
| "sub", StringSub, |
| "sup", StringSup, |
| "toJSON", StringToJSON |
| )); |
| } |
| |
| |
| SetupString(); |