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Diffstat (limited to 'src/3rdparty/javascriptcore/JavaScriptCore/runtime/StringPrototype.cpp')
| -rw-r--r-- | src/3rdparty/javascriptcore/JavaScriptCore/runtime/StringPrototype.cpp | 902 |
1 files changed, 902 insertions, 0 deletions
diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/runtime/StringPrototype.cpp b/src/3rdparty/javascriptcore/JavaScriptCore/runtime/StringPrototype.cpp new file mode 100644 index 000000000..c9a32b697 --- /dev/null +++ b/src/3rdparty/javascriptcore/JavaScriptCore/runtime/StringPrototype.cpp @@ -0,0 +1,902 @@ +/* + * Copyright (C) 1999-2001 Harri Porten (porten@kde.org) + * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. + * Copyright (C) 2009 Torch Mobile, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#include "config.h" +#include "StringPrototype.h" + +#include "CachedCall.h" +#include "Error.h" +#include "Executable.h" +#include "JSArray.h" +#include "JSFunction.h" +#include "ObjectPrototype.h" +#include "PropertyNameArray.h" +#include "RegExpConstructor.h" +#include "RegExpObject.h" +#include <wtf/ASCIICType.h> +#include <wtf/MathExtras.h> +#include <wtf/unicode/Collator.h> + +using namespace WTF; + +namespace JSC { + +ASSERT_CLASS_FITS_IN_CELL(StringPrototype); + +static JSValue JSC_HOST_CALL stringProtoFuncToString(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncCharAt(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncCharCodeAt(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncConcat(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncIndexOf(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncLastIndexOf(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncMatch(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncReplace(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncSearch(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncSlice(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncSplit(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncSubstr(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncSubstring(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncToLowerCase(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncToUpperCase(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncLocaleCompare(ExecState*, JSObject*, JSValue, const ArgList&); + +static JSValue JSC_HOST_CALL stringProtoFuncBig(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncSmall(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncBlink(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncBold(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncFixed(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncItalics(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncStrike(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncSub(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncSup(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncFontcolor(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncFontsize(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncAnchor(ExecState*, JSObject*, JSValue, const ArgList&); +static JSValue JSC_HOST_CALL stringProtoFuncLink(ExecState*, JSObject*, JSValue, const ArgList&); + +} + +#include "StringPrototype.lut.h" + +namespace JSC { + +const ClassInfo StringPrototype::info = { "String", &StringObject::info, 0, ExecState::stringTable }; + +/* Source for StringPrototype.lut.h +@begin stringTable 26 + toString stringProtoFuncToString DontEnum|Function 0 + valueOf stringProtoFuncToString DontEnum|Function 0 + charAt stringProtoFuncCharAt DontEnum|Function 1 + charCodeAt stringProtoFuncCharCodeAt DontEnum|Function 1 + concat stringProtoFuncConcat DontEnum|Function 1 + indexOf stringProtoFuncIndexOf DontEnum|Function 1 + lastIndexOf stringProtoFuncLastIndexOf DontEnum|Function 1 + match stringProtoFuncMatch DontEnum|Function 1 + replace stringProtoFuncReplace DontEnum|Function 2 + search stringProtoFuncSearch DontEnum|Function 1 + slice stringProtoFuncSlice DontEnum|Function 2 + split stringProtoFuncSplit DontEnum|Function 2 + substr stringProtoFuncSubstr DontEnum|Function 2 + substring stringProtoFuncSubstring DontEnum|Function 2 + toLowerCase stringProtoFuncToLowerCase DontEnum|Function 0 + toUpperCase stringProtoFuncToUpperCase DontEnum|Function 0 + localeCompare stringProtoFuncLocaleCompare DontEnum|Function 1 + + # toLocaleLowerCase and toLocaleUpperCase are currently identical to toLowerCase and toUpperCase + toLocaleLowerCase stringProtoFuncToLowerCase DontEnum|Function 0 + toLocaleUpperCase stringProtoFuncToUpperCase DontEnum|Function 0 + + big stringProtoFuncBig DontEnum|Function 0 + small stringProtoFuncSmall DontEnum|Function 0 + blink stringProtoFuncBlink DontEnum|Function 0 + bold stringProtoFuncBold DontEnum|Function 0 + fixed stringProtoFuncFixed DontEnum|Function 0 + italics stringProtoFuncItalics DontEnum|Function 0 + strike stringProtoFuncStrike DontEnum|Function 0 + sub stringProtoFuncSub DontEnum|Function 0 + sup stringProtoFuncSup DontEnum|Function 0 + fontcolor stringProtoFuncFontcolor DontEnum|Function 1 + fontsize stringProtoFuncFontsize DontEnum|Function 1 + anchor stringProtoFuncAnchor DontEnum|Function 1 + link stringProtoFuncLink DontEnum|Function 1 +@end +*/ + +// ECMA 15.5.4 +StringPrototype::StringPrototype(ExecState* exec, PassRefPtr<Structure> structure) + : StringObject(exec, structure) +{ + // The constructor will be added later, after StringConstructor has been built + putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 0), DontDelete | ReadOnly | DontEnum); +} + +bool StringPrototype::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot &slot) +{ + return getStaticFunctionSlot<StringObject>(exec, ExecState::stringTable(exec), this, propertyName, slot); +} + +bool StringPrototype::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor) +{ + return getStaticFunctionDescriptor<StringObject>(exec, ExecState::stringTable(exec), this, propertyName, descriptor); +} + +// ------------------------------ Functions -------------------------- + +static inline UString substituteBackreferences(const UString& replacement, const UString& source, const int* ovector, RegExp* reg) +{ + UString substitutedReplacement; + int offset = 0; + int i = -1; + while ((i = replacement.find('$', i + 1)) != -1) { + if (i + 1 == replacement.size()) + break; + + UChar ref = replacement[i + 1]; + if (ref == '$') { + // "$$" -> "$" + ++i; + substitutedReplacement.append(replacement.data() + offset, i - offset); + offset = i + 1; + continue; + } + + int backrefStart; + int backrefLength; + int advance = 0; + if (ref == '&') { + backrefStart = ovector[0]; + backrefLength = ovector[1] - backrefStart; + } else if (ref == '`') { + backrefStart = 0; + backrefLength = ovector[0]; + } else if (ref == '\'') { + backrefStart = ovector[1]; + backrefLength = source.size() - backrefStart; + } else if (reg && ref >= '0' && ref <= '9') { + // 1- and 2-digit back references are allowed + unsigned backrefIndex = ref - '0'; + if (backrefIndex > reg->numSubpatterns()) + continue; + if (replacement.size() > i + 2) { + ref = replacement[i + 2]; + if (ref >= '0' && ref <= '9') { + backrefIndex = 10 * backrefIndex + ref - '0'; + if (backrefIndex > reg->numSubpatterns()) + backrefIndex = backrefIndex / 10; // Fall back to the 1-digit reference + else + advance = 1; + } + } + if (!backrefIndex) + continue; + backrefStart = ovector[2 * backrefIndex]; + backrefLength = ovector[2 * backrefIndex + 1] - backrefStart; + } else + continue; + + if (i - offset) + substitutedReplacement.append(replacement.data() + offset, i - offset); + i += 1 + advance; + offset = i + 1; + substitutedReplacement.append(source.data() + backrefStart, backrefLength); + } + + if (!offset) + return replacement; + + if (replacement.size() - offset) + substitutedReplacement.append(replacement.data() + offset, replacement.size() - offset); + + return substitutedReplacement; +} + +static inline int localeCompare(const UString& a, const UString& b) +{ + return Collator::userDefault()->collate(reinterpret_cast<const ::UChar*>(a.data()), a.size(), reinterpret_cast<const ::UChar*>(b.data()), b.size()); +} + +JSValue JSC_HOST_CALL stringProtoFuncReplace(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + JSString* sourceVal = thisValue.toThisJSString(exec); + const UString& source = sourceVal->value(); + + JSValue pattern = args.at(0); + + JSValue replacement = args.at(1); + UString replacementString; + CallData callData; + CallType callType = replacement.getCallData(callData); + if (callType == CallTypeNone) + replacementString = replacement.toString(exec); + + if (pattern.inherits(&RegExpObject::info)) { + RegExp* reg = asRegExpObject(pattern)->regExp(); + bool global = reg->global(); + + RegExpConstructor* regExpConstructor = exec->lexicalGlobalObject()->regExpConstructor(); + + int lastIndex = 0; + int startPosition = 0; + + Vector<UString::Range, 16> sourceRanges; + Vector<UString, 16> replacements; + + // This is either a loop (if global is set) or a one-way (if not). + if (global && callType == CallTypeJS) { + // reg->numSubpatterns() + 1 for pattern args, + 2 for match start and sourceValue + int argCount = reg->numSubpatterns() + 1 + 2; + JSFunction* func = asFunction(replacement); + CachedCall cachedCall(exec, func, argCount, exec->exceptionSlot()); + if (exec->hadException()) + return jsNull(); + while (true) { + int matchIndex; + int matchLen; + int* ovector; + regExpConstructor->performMatch(reg, source, startPosition, matchIndex, matchLen, &ovector); + if (matchIndex < 0) + break; + + sourceRanges.append(UString::Range(lastIndex, matchIndex - lastIndex)); + + int completeMatchStart = ovector[0]; + unsigned i = 0; + for (; i < reg->numSubpatterns() + 1; ++i) { + int matchStart = ovector[i * 2]; + int matchLen = ovector[i * 2 + 1] - matchStart; + + if (matchStart < 0) + cachedCall.setArgument(i, jsUndefined()); + else + cachedCall.setArgument(i, jsSubstring(exec, source, matchStart, matchLen)); + } + + cachedCall.setArgument(i++, jsNumber(exec, completeMatchStart)); + cachedCall.setArgument(i++, sourceVal); + + cachedCall.setThis(exec->globalThisValue()); + replacements.append(cachedCall.call().toString(cachedCall.newCallFrame())); + if (exec->hadException()) + break; + + lastIndex = matchIndex + matchLen; + startPosition = lastIndex; + + // special case of empty match + if (matchLen == 0) { + startPosition++; + if (startPosition > source.size()) + break; + } + } + } else { + do { + int matchIndex; + int matchLen; + int* ovector; + regExpConstructor->performMatch(reg, source, startPosition, matchIndex, matchLen, &ovector); + if (matchIndex < 0) + break; + + sourceRanges.append(UString::Range(lastIndex, matchIndex - lastIndex)); + + if (callType != CallTypeNone) { + int completeMatchStart = ovector[0]; + MarkedArgumentBuffer args; + + for (unsigned i = 0; i < reg->numSubpatterns() + 1; ++i) { + int matchStart = ovector[i * 2]; + int matchLen = ovector[i * 2 + 1] - matchStart; + + if (matchStart < 0) + args.append(jsUndefined()); + else + args.append(jsSubstring(exec, source, matchStart, matchLen)); + } + + args.append(jsNumber(exec, completeMatchStart)); + args.append(sourceVal); + + replacements.append(call(exec, replacement, callType, callData, exec->globalThisValue(), args).toString(exec)); + if (exec->hadException()) + break; + } else + replacements.append(substituteBackreferences(replacementString, source, ovector, reg)); + + lastIndex = matchIndex + matchLen; + startPosition = lastIndex; + + // special case of empty match + if (matchLen == 0) { + startPosition++; + if (startPosition > source.size()) + break; + } + } while (global); + } + + if (!lastIndex && replacements.isEmpty()) + return sourceVal; + + if (lastIndex < source.size()) + sourceRanges.append(UString::Range(lastIndex, source.size() - lastIndex)); + + return jsString(exec, source.spliceSubstringsWithSeparators(sourceRanges.data(), sourceRanges.size(), + replacements.data(), replacements.size())); + } + + // Not a regular expression, so treat the pattern as a string. + + UString patternString = pattern.toString(exec); + int matchPos = source.find(patternString); + + if (matchPos == -1) + return sourceVal; + + int matchLen = patternString.size(); + if (callType != CallTypeNone) { + MarkedArgumentBuffer args; + args.append(jsSubstring(exec, source, matchPos, matchLen)); + args.append(jsNumber(exec, matchPos)); + args.append(sourceVal); + + replacementString = call(exec, replacement, callType, callData, exec->globalThisValue(), args).toString(exec); + } + + int ovector[2] = { matchPos, matchPos + matchLen }; + return jsString(exec, source.replaceRange(matchPos, matchLen, substituteBackreferences(replacementString, source, ovector, 0))); +} + +JSValue JSC_HOST_CALL stringProtoFuncToString(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) +{ + // Also used for valueOf. + + if (thisValue.isString()) + return thisValue; + + if (thisValue.inherits(&StringObject::info)) + return asStringObject(thisValue)->internalValue(); + + return throwError(exec, TypeError); +} + +JSValue JSC_HOST_CALL stringProtoFuncCharAt(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + UString s = thisValue.toThisString(exec); + unsigned len = s.size(); + JSValue a0 = args.at(0); + if (a0.isUInt32()) { + uint32_t i = a0.asUInt32(); + if (i < len) + return jsSingleCharacterSubstring(exec, s, i); + return jsEmptyString(exec); + } + double dpos = a0.toInteger(exec); + if (dpos >= 0 && dpos < len) + return jsSingleCharacterSubstring(exec, s, static_cast<unsigned>(dpos)); + return jsEmptyString(exec); +} + +JSValue JSC_HOST_CALL stringProtoFuncCharCodeAt(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + UString s = thisValue.toThisString(exec); + unsigned len = s.size(); + JSValue a0 = args.at(0); + if (a0.isUInt32()) { + uint32_t i = a0.asUInt32(); + if (i < len) + return jsNumber(exec, s.data()[i]); + return jsNaN(exec); + } + double dpos = a0.toInteger(exec); + if (dpos >= 0 && dpos < len) + return jsNumber(exec, s[static_cast<int>(dpos)]); + return jsNaN(exec); +} + +JSValue JSC_HOST_CALL stringProtoFuncConcat(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + UString s = thisValue.toThisString(exec); + + ArgList::const_iterator end = args.end(); + for (ArgList::const_iterator it = args.begin(); it != end; ++it) + s += (*it).toString(exec); + return jsString(exec, s); +} + +JSValue JSC_HOST_CALL stringProtoFuncIndexOf(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + UString s = thisValue.toThisString(exec); + int len = s.size(); + + JSValue a0 = args.at(0); + JSValue a1 = args.at(1); + UString u2 = a0.toString(exec); + int pos; + if (a1.isUndefined()) + pos = 0; + else if (a1.isUInt32()) + pos = min<uint32_t>(a1.asUInt32(), len); + else { + double dpos = a1.toInteger(exec); + if (dpos < 0) + dpos = 0; + else if (dpos > len) + dpos = len; + pos = static_cast<int>(dpos); + } + + return jsNumber(exec, s.find(u2, pos)); +} + +JSValue JSC_HOST_CALL stringProtoFuncLastIndexOf(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + UString s = thisValue.toThisString(exec); + int len = s.size(); + + JSValue a0 = args.at(0); + JSValue a1 = args.at(1); + + UString u2 = a0.toString(exec); + double dpos = a1.toIntegerPreserveNaN(exec); + if (dpos < 0) + dpos = 0; + else if (!(dpos <= len)) // true for NaN + dpos = len; + return jsNumber(exec, s.rfind(u2, static_cast<int>(dpos))); +} + +JSValue JSC_HOST_CALL stringProtoFuncMatch(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + UString s = thisValue.toThisString(exec); + + JSValue a0 = args.at(0); + + UString u = s; + RefPtr<RegExp> reg; + RegExpObject* imp = 0; + if (a0.inherits(&RegExpObject::info)) + reg = asRegExpObject(a0)->regExp(); + else { + /* + * ECMA 15.5.4.12 String.prototype.search (regexp) + * If regexp is not an object whose [[Class]] property is "RegExp", it is + * replaced with the result of the expression new RegExp(regexp). + */ + reg = RegExp::create(&exec->globalData(), a0.toString(exec)); + } + RegExpConstructor* regExpConstructor = exec->lexicalGlobalObject()->regExpConstructor(); + int pos; + int matchLength; + regExpConstructor->performMatch(reg.get(), u, 0, pos, matchLength); + if (!(reg->global())) { + // case without 'g' flag is handled like RegExp.prototype.exec + if (pos < 0) + return jsNull(); + return regExpConstructor->arrayOfMatches(exec); + } + + // return array of matches + MarkedArgumentBuffer list; + int lastIndex = 0; + while (pos >= 0) { + list.append(jsSubstring(exec, u, pos, matchLength)); + lastIndex = pos; + pos += matchLength == 0 ? 1 : matchLength; + regExpConstructor->performMatch(reg.get(), u, pos, pos, matchLength); + } + if (imp) + imp->setLastIndex(lastIndex); + if (list.isEmpty()) { + // if there are no matches at all, it's important to return + // Null instead of an empty array, because this matches + // other browsers and because Null is a false value. + return jsNull(); + } + + return constructArray(exec, list); +} + +JSValue JSC_HOST_CALL stringProtoFuncSearch(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + UString s = thisValue.toThisString(exec); + + JSValue a0 = args.at(0); + + UString u = s; + RefPtr<RegExp> reg; + if (a0.inherits(&RegExpObject::info)) + reg = asRegExpObject(a0)->regExp(); + else { + /* + * ECMA 15.5.4.12 String.prototype.search (regexp) + * If regexp is not an object whose [[Class]] property is "RegExp", it is + * replaced with the result of the expression new RegExp(regexp). + */ + reg = RegExp::create(&exec->globalData(), a0.toString(exec)); + } + RegExpConstructor* regExpConstructor = exec->lexicalGlobalObject()->regExpConstructor(); + int pos; + int matchLength; + regExpConstructor->performMatch(reg.get(), u, 0, pos, matchLength); + return jsNumber(exec, pos); +} + +JSValue JSC_HOST_CALL stringProtoFuncSlice(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + UString s = thisValue.toThisString(exec); + int len = s.size(); + + JSValue a0 = args.at(0); + JSValue a1 = args.at(1); + + // The arg processing is very much like ArrayProtoFunc::Slice + double start = a0.toInteger(exec); + double end = a1.isUndefined() ? len : a1.toInteger(exec); + double from = start < 0 ? len + start : start; + double to = end < 0 ? len + end : end; + if (to > from && to > 0 && from < len) { + if (from < 0) + from = 0; + if (to > len) + to = len; + return jsSubstring(exec, s, static_cast<unsigned>(from), static_cast<unsigned>(to) - static_cast<unsigned>(from)); + } + + return jsEmptyString(exec); +} + +JSValue JSC_HOST_CALL stringProtoFuncSplit(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + UString s = thisValue.toThisString(exec); + + JSValue a0 = args.at(0); + JSValue a1 = args.at(1); + + JSArray* result = constructEmptyArray(exec); + unsigned i = 0; + int p0 = 0; + unsigned limit = a1.isUndefined() ? 0xFFFFFFFFU : a1.toUInt32(exec); + if (a0.inherits(&RegExpObject::info)) { + RegExp* reg = asRegExpObject(a0)->regExp(); + if (s.isEmpty() && reg->match(s, 0) >= 0) { + // empty string matched by regexp -> empty array + return result; + } + int pos = 0; + while (i != limit && pos < s.size()) { + Vector<int, 32> ovector; + int mpos = reg->match(s, pos, &ovector); + if (mpos < 0) + break; + int mlen = ovector[1] - ovector[0]; + pos = mpos + (mlen == 0 ? 1 : mlen); + if (mpos != p0 || mlen) { + result->put(exec, i++, jsSubstring(exec, s, p0, mpos - p0)); + p0 = mpos + mlen; + } + for (unsigned si = 1; si <= reg->numSubpatterns(); ++si) { + int spos = ovector[si * 2]; + if (spos < 0) + result->put(exec, i++, jsUndefined()); + else + result->put(exec, i++, jsSubstring(exec, s, spos, ovector[si * 2 + 1] - spos)); + } + } + } else { + UString u2 = a0.toString(exec); + if (u2.isEmpty()) { + if (s.isEmpty()) { + // empty separator matches empty string -> empty array + return result; + } + while (i != limit && p0 < s.size() - 1) + result->put(exec, i++, jsSingleCharacterSubstring(exec, s, p0++)); + } else { + int pos; + while (i != limit && (pos = s.find(u2, p0)) >= 0) { + result->put(exec, i++, jsSubstring(exec, s, p0, pos - p0)); + p0 = pos + u2.size(); + } + } + } + + // add remaining string + if (i != limit) + result->put(exec, i++, jsSubstring(exec, s, p0, s.size() - p0)); + + return result; +} + +JSValue JSC_HOST_CALL stringProtoFuncSubstr(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + UString s = thisValue.toThisString(exec); + int len = s.size(); + + JSValue a0 = args.at(0); + JSValue a1 = args.at(1); + + double start = a0.toInteger(exec); + double length = a1.isUndefined() ? len : a1.toInteger(exec); + if (start >= len || length <= 0) + return jsEmptyString(exec); + if (start < 0) { + start += len; + if (start < 0) + start = 0; + } + if (start + length > len) + length = len - start; + return jsSubstring(exec, s, static_cast<unsigned>(start), static_cast<unsigned>(length)); +} + +JSValue JSC_HOST_CALL stringProtoFuncSubstring(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + UString s = thisValue.toThisString(exec); + int len = s.size(); + + JSValue a0 = args.at(0); + JSValue a1 = args.at(1); + + double start = a0.toNumber(exec); + double end = a1.toNumber(exec); + if (isnan(start)) + start = 0; + if (isnan(end)) + end = 0; + if (start < 0) + start = 0; + if (end < 0) + end = 0; + if (start > len) + start = len; + if (end > len) + end = len; + if (a1.isUndefined()) + end = len; + if (start > end) { + double temp = end; + end = start; + start = temp; + } + return jsSubstring(exec, s, static_cast<unsigned>(start), static_cast<unsigned>(end) - static_cast<unsigned>(start)); +} + +JSValue JSC_HOST_CALL stringProtoFuncToLowerCase(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) +{ + JSString* sVal = thisValue.toThisJSString(exec); + const UString& s = sVal->value(); + + int sSize = s.size(); + if (!sSize) + return sVal; + + const UChar* sData = s.data(); + Vector<UChar> buffer(sSize); + + UChar ored = 0; + for (int i = 0; i < sSize; i++) { + UChar c = sData[i]; + ored |= c; + buffer[i] = toASCIILower(c); + } + if (!(ored & ~0x7f)) + return jsString(exec, UString(buffer.releaseBuffer(), sSize, false)); + + bool error; + int length = Unicode::toLower(buffer.data(), sSize, sData, sSize, &error); + if (error) { + buffer.resize(length); + length = Unicode::toLower(buffer.data(), length, sData, sSize, &error); + if (error) + return sVal; + } + if (length == sSize && memcmp(buffer.data(), sData, length * sizeof(UChar)) == 0) + return sVal; + return jsString(exec, UString(buffer.releaseBuffer(), length, false)); +} + +JSValue JSC_HOST_CALL stringProtoFuncToUpperCase(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) +{ + JSString* sVal = thisValue.toThisJSString(exec); + const UString& s = sVal->value(); + + int sSize = s.size(); + if (!sSize) + return sVal; + + const UChar* sData = s.data(); + Vector<UChar> buffer(sSize); + + UChar ored = 0; + for (int i = 0; i < sSize; i++) { + UChar c = sData[i]; + ored |= c; + buffer[i] = toASCIIUpper(c); + } + if (!(ored & ~0x7f)) + return jsString(exec, UString(buffer.releaseBuffer(), sSize, false)); + + bool error; + int length = Unicode::toUpper(buffer.data(), sSize, sData, sSize, &error); + if (error) { + buffer.resize(length); + length = Unicode::toUpper(buffer.data(), length, sData, sSize, &error); + if (error) + return sVal; + } + if (length == sSize && memcmp(buffer.data(), sData, length * sizeof(UChar)) == 0) + return sVal; + return jsString(exec, UString(buffer.releaseBuffer(), length, false)); +} + +JSValue JSC_HOST_CALL stringProtoFuncLocaleCompare(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + if (args.size() < 1) + return jsNumber(exec, 0); + + UString s = thisValue.toThisString(exec); + JSValue a0 = args.at(0); + return jsNumber(exec, localeCompare(s, a0.toString(exec))); +} + +JSValue JSC_HOST_CALL stringProtoFuncBig(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) +{ + UString s = thisValue.toThisString(exec); + return jsNontrivialString(exec, "<big>" + s + "</big>"); +} + +JSValue JSC_HOST_CALL stringProtoFuncSmall(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) +{ + UString s = thisValue.toThisString(exec); + return jsNontrivialString(exec, "<small>" + s + "</small>"); +} + +JSValue JSC_HOST_CALL stringProtoFuncBlink(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) +{ + UString s = thisValue.toThisString(exec); + return jsNontrivialString(exec, "<blink>" + s + "</blink>"); +} + +JSValue JSC_HOST_CALL stringProtoFuncBold(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) +{ + UString s = thisValue.toThisString(exec); + return jsNontrivialString(exec, "<b>" + s + "</b>"); +} + +JSValue JSC_HOST_CALL stringProtoFuncFixed(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) +{ + UString s = thisValue.toThisString(exec); + return jsString(exec, "<tt>" + s + "</tt>"); +} + +JSValue JSC_HOST_CALL stringProtoFuncItalics(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) +{ + UString s = thisValue.toThisString(exec); + return jsNontrivialString(exec, "<i>" + s + "</i>"); +} + +JSValue JSC_HOST_CALL stringProtoFuncStrike(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) +{ + UString s = thisValue.toThisString(exec); + return jsNontrivialString(exec, "<strike>" + s + "</strike>"); +} + +JSValue JSC_HOST_CALL stringProtoFuncSub(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) +{ + UString s = thisValue.toThisString(exec); + return jsNontrivialString(exec, "<sub>" + s + "</sub>"); +} + +JSValue JSC_HOST_CALL stringProtoFuncSup(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&) +{ + UString s = thisValue.toThisString(exec); + return jsNontrivialString(exec, "<sup>" + s + "</sup>"); +} + +JSValue JSC_HOST_CALL stringProtoFuncFontcolor(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + UString s = thisValue.toThisString(exec); + JSValue a0 = args.at(0); + return jsNontrivialString(exec, "<font color=\"" + a0.toString(exec) + "\">" + s + "</font>"); +} + +JSValue JSC_HOST_CALL stringProtoFuncFontsize(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + UString s = thisValue.toThisString(exec); + JSValue a0 = args.at(0); + + uint32_t smallInteger; + if (a0.getUInt32(smallInteger) && smallInteger <= 9) { + unsigned stringSize = s.size(); + unsigned bufferSize = 22 + stringSize; + UChar* buffer; + if (!tryFastMalloc(bufferSize * sizeof(UChar)).getValue(buffer)) + return jsUndefined(); + buffer[0] = '<'; + buffer[1] = 'f'; + buffer[2] = 'o'; + buffer[3] = 'n'; + buffer[4] = 't'; + buffer[5] = ' '; + buffer[6] = 's'; + buffer[7] = 'i'; + buffer[8] = 'z'; + buffer[9] = 'e'; + buffer[10] = '='; + buffer[11] = '"'; + buffer[12] = '0' + smallInteger; + buffer[13] = '"'; + buffer[14] = '>'; + memcpy(&buffer[15], s.data(), stringSize * sizeof(UChar)); + buffer[15 + stringSize] = '<'; + buffer[16 + stringSize] = '/'; + buffer[17 + stringSize] = 'f'; + buffer[18 + stringSize] = 'o'; + buffer[19 + stringSize] = 'n'; + buffer[20 + stringSize] = 't'; + buffer[21 + stringSize] = '>'; + return jsNontrivialString(exec, UString(buffer, bufferSize, false)); + } + + return jsNontrivialString(exec, "<font size=\"" + a0.toString(exec) + "\">" + s + "</font>"); +} + +JSValue JSC_HOST_CALL stringProtoFuncAnchor(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + UString s = thisValue.toThisString(exec); + JSValue a0 = args.at(0); + return jsNontrivialString(exec, "<a name=\"" + a0.toString(exec) + "\">" + s + "</a>"); +} + +JSValue JSC_HOST_CALL stringProtoFuncLink(ExecState* exec, JSObject*, JSValue thisValue, const ArgList& args) +{ + UString s = thisValue.toThisString(exec); + JSValue a0 = args.at(0); + UString linkText = a0.toString(exec); + + unsigned linkTextSize = linkText.size(); + unsigned stringSize = s.size(); + unsigned bufferSize = 15 + linkTextSize + stringSize; + UChar* buffer; + if (!tryFastMalloc(bufferSize * sizeof(UChar)).getValue(buffer)) + return jsUndefined(); + buffer[0] = '<'; + buffer[1] = 'a'; + buffer[2] = ' '; + buffer[3] = 'h'; + buffer[4] = 'r'; + buffer[5] = 'e'; + buffer[6] = 'f'; + buffer[7] = '='; + buffer[8] = '"'; + memcpy(&buffer[9], linkText.data(), linkTextSize * sizeof(UChar)); + buffer[9 + linkTextSize] = '"'; + buffer[10 + linkTextSize] = '>'; + memcpy(&buffer[11 + linkTextSize], s.data(), stringSize * sizeof(UChar)); + buffer[11 + linkTextSize + stringSize] = '<'; + buffer[12 + linkTextSize + stringSize] = '/'; + buffer[13 + linkTextSize + stringSize] = 'a'; + buffer[14 + linkTextSize + stringSize] = '>'; + return jsNontrivialString(exec, UString(buffer, bufferSize, false)); +} + +} // namespace JSC |