| /* |
| * Copyright (C) 2010 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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. |
| */ |
| |
| #ifndef HTMLParserIdioms_h |
| #define HTMLParserIdioms_h |
| |
| #include "core/CoreExport.h" |
| #include "core/dom/QualifiedName.h" |
| #include "platform/Decimal.h" |
| #include "wtf/Forward.h" |
| #include "wtf/text/WTFString.h" |
| |
| namespace WTF { |
| class TextEncoding; |
| } |
| |
| namespace blink { |
| |
| // Strip leading and trailing whitespace as defined by the HTML specification. |
| String stripLeadingAndTrailingHTMLSpaces(const String&); |
| |
| // An implementation of the HTML specification's algorithm to convert a number |
| // to a string for number and range types. |
| String serializeForNumberType(const Decimal&); |
| String serializeForNumberType(double); |
| |
| // Convert the specified string to a decimal/double. If the conversion fails, |
| // the return value is fallback value or NaN if not specified. Leading or |
| // trailing illegal characters cause failure, as does passing an empty string. |
| // The double* parameter may be 0 to check if the string can be parsed without |
| // getting the result. |
| Decimal parseToDecimalForNumberType( |
| const String&, |
| const Decimal& fallbackValue = Decimal::nan()); |
| double parseToDoubleForNumberType( |
| const String&, |
| double fallbackValue = std::numeric_limits<double>::quiet_NaN()); |
| |
| // http://www.whatwg.org/specs/web-apps/current-work/#rules-for-parsing-integers |
| bool parseHTMLInteger(const String&, int&); |
| |
| // http://www.whatwg.org/specs/web-apps/current-work/#rules-for-parsing-non-negative-integers |
| CORE_EXPORT bool parseHTMLNonNegativeInteger(const String&, unsigned&); |
| |
| // https://html.spec.whatwg.org/multipage/infrastructure.html#rules-for-parsing-a-list-of-floating-point-numbers |
| CORE_EXPORT Vector<double> parseHTMLListOfFloatingPointNumbers(const String&); |
| |
| typedef Vector<std::pair<String, String>> HTMLAttributeList; |
| // The returned encoding might not be valid. |
| WTF::TextEncoding encodingFromMetaAttributes(const HTMLAttributeList&); |
| |
| // Space characters as defined by the HTML specification. |
| template <typename CharType> |
| inline bool isHTMLSpace(CharType character) { |
| // Histogram from Apple's page load test combined with some ad hoc browsing |
| // some other test suites. |
| // |
| // 82%: 216330 non-space characters, all > U+0020 |
| // 11%: 30017 plain space characters, U+0020 |
| // 5%: 12099 newline characters, U+000A |
| // 2%: 5346 tab characters, U+0009 |
| // |
| // No other characters seen. No U+000C or U+000D, and no other control |
| // characters. Accordingly, we check for non-spaces first, then space, then |
| // newline, then tab, then the other characters. |
| |
| return character <= ' ' && |
| (character == ' ' || character == '\n' || character == '\t' || |
| character == '\r' || character == '\f'); |
| } |
| |
| template <typename CharType> |
| inline bool isComma(CharType character) { |
| return character == ','; |
| } |
| |
| template <typename CharType> |
| inline bool isHTMLSpaceOrComma(CharType character) { |
| return isComma(character) || isHTMLSpace(character); |
| } |
| |
| inline bool isHTMLLineBreak(UChar character) { |
| return character <= '\r' && (character == '\n' || character == '\r'); |
| } |
| |
| template <typename CharType> |
| inline bool isNotHTMLSpace(CharType character) { |
| return !isHTMLSpace<CharType>(character); |
| } |
| |
| bool threadSafeMatch(const QualifiedName&, const QualifiedName&); |
| bool threadSafeMatch(const String&, const QualifiedName&); |
| |
| enum CharacterWidth { Likely8Bit, Force8Bit, Force16Bit }; |
| |
| String attemptStaticStringCreation(const LChar*, size_t); |
| |
| String attemptStaticStringCreation(const UChar*, size_t, CharacterWidth); |
| |
| template <size_t inlineCapacity> |
| inline static String attemptStaticStringCreation( |
| const Vector<UChar, inlineCapacity>& vector, |
| CharacterWidth width) { |
| return attemptStaticStringCreation(vector.data(), vector.size(), width); |
| } |
| |
| inline static String attemptStaticStringCreation(const String str) { |
| if (!str.is8Bit()) |
| return attemptStaticStringCreation(str.characters16(), str.length(), |
| Force16Bit); |
| return attemptStaticStringCreation(str.characters8(), str.length()); |
| } |
| |
| } // namespace blink |
| |
| #endif // HTMLParserIdioms_h |