| /* |
| * Copyright (C) 2008 Apple Inc. All Rights Reserved. |
| * Copyright (C) 2009 Torch Mobile, Inc. http://www.torchmobile.com/ |
| * |
| * 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. ``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 |
| * 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. |
| */ |
| |
| #include "config.h" |
| #include "PreloadScanner.h" |
| |
| #include "AtomicString.h" |
| #include "CachedCSSStyleSheet.h" |
| #include "CachedImage.h" |
| #include "CachedResource.h" |
| #include "CachedResourceClient.h" |
| #include "CachedScript.h" |
| #include "CSSHelper.h" |
| #include "CString.h" |
| #include "DocLoader.h" |
| #include "Document.h" |
| #include "Frame.h" |
| #include "FrameLoader.h" |
| #include "HTMLLinkElement.h" |
| #include "HTMLNames.h" |
| #include <wtf/CurrentTime.h> |
| #include <wtf/unicode/Unicode.h> |
| |
| // Use __GNUC__ instead of PLATFORM(GCC) to stay consistent with the gperf generated c file |
| #ifdef __GNUC__ |
| // The main tokenizer includes this too so we are getting two copies of the data. However, this way the code gets inlined. |
| #include "HTMLEntityNames.c" |
| #else |
| // Not inlined for non-GCC compilers |
| struct Entity { |
| const char* name; |
| int code; |
| }; |
| const struct Entity* findEntity(register const char* str, register unsigned int len); |
| #endif |
| |
| #define PRELOAD_DEBUG 0 |
| |
| using namespace WTF; |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| |
| PreloadScanner::PreloadScanner(Document* doc) |
| : m_inProgress(false) |
| , m_timeUsed(0) |
| , m_bodySeen(false) |
| , m_document(doc) |
| { |
| #if PRELOAD_DEBUG |
| printf("CREATING PRELOAD SCANNER FOR %s\n", m_document->url().string().latin1().data()); |
| #endif |
| } |
| |
| PreloadScanner::~PreloadScanner() |
| { |
| #if PRELOAD_DEBUG |
| printf("DELETING PRELOAD SCANNER FOR %s\n", m_document->url().string().latin1().data()); |
| printf("TOTAL TIME USED %.4fs\n", m_timeUsed); |
| #endif |
| } |
| |
| void PreloadScanner::begin() |
| { |
| ASSERT(!m_inProgress); |
| reset(); |
| m_inProgress = true; |
| } |
| |
| void PreloadScanner::end() |
| { |
| ASSERT(m_inProgress); |
| m_inProgress = false; |
| } |
| |
| void PreloadScanner::reset() |
| { |
| m_source.clear(); |
| |
| m_state = Data; |
| m_escape = false; |
| m_contentModel = PCDATA; |
| m_commentPos = 0; |
| |
| m_closeTag = false; |
| m_tagName.clear(); |
| m_attributeName.clear(); |
| m_attributeValue.clear(); |
| m_lastStartTag = AtomicString(); |
| |
| m_urlToLoad = String(); |
| m_charset = String(); |
| m_linkIsStyleSheet = false; |
| m_lastCharacterIndex = 0; |
| clearLastCharacters(); |
| |
| m_cssState = CSSInitial; |
| m_cssRule.clear(); |
| m_cssRuleValue.clear(); |
| } |
| |
| bool PreloadScanner::scanningBody() const |
| { |
| return m_document->body() || m_bodySeen; |
| } |
| |
| void PreloadScanner::write(const SegmentedString& source) |
| { |
| #if PRELOAD_DEBUG |
| double startTime = currentTime(); |
| #endif |
| tokenize(source); |
| #if PRELOAD_DEBUG |
| m_timeUsed += currentTime() - startTime; |
| #endif |
| } |
| |
| static inline bool isWhitespace(UChar c) |
| { |
| return c == ' ' || c == '\n' || c == '\r' || c == '\t'; |
| } |
| |
| inline void PreloadScanner::clearLastCharacters() |
| { |
| memset(m_lastCharacters, 0, lastCharactersBufferSize * sizeof(UChar)); |
| } |
| |
| inline void PreloadScanner::rememberCharacter(UChar c) |
| { |
| m_lastCharacterIndex = (m_lastCharacterIndex + 1) % lastCharactersBufferSize; |
| m_lastCharacters[m_lastCharacterIndex] = c; |
| } |
| |
| inline bool PreloadScanner::lastCharactersMatch(const char* chars, unsigned count) const |
| { |
| unsigned pos = m_lastCharacterIndex; |
| while (count) { |
| if (chars[count - 1] != m_lastCharacters[pos]) |
| return false; |
| --count; |
| if (!pos) |
| pos = lastCharactersBufferSize; |
| --pos; |
| } |
| return true; |
| } |
| |
| static inline unsigned legalEntityFor(unsigned value) |
| { |
| // FIXME There is a table for more exceptions in the HTML5 specification. |
| if (value == 0 || value > 0x10FFFF || (value >= 0xD800 && value <= 0xDFFF)) |
| return 0xFFFD; |
| return value; |
| } |
| |
| unsigned PreloadScanner::consumeEntity(SegmentedString& source, bool& notEnoughCharacters) |
| { |
| enum EntityState { |
| Initial, |
| NumberType, |
| MaybeHex, |
| Hex, |
| Decimal, |
| Named |
| }; |
| EntityState entityState = Initial; |
| unsigned result = 0; |
| Vector<UChar, 10> seenChars; |
| Vector<char, 10> entityName; |
| |
| while (!source.isEmpty()) { |
| UChar cc = *source; |
| seenChars.append(cc); |
| switch (entityState) { |
| case Initial: |
| if (isWhitespace(cc) || cc == '<' || cc == '&') |
| return 0; |
| else if (cc == '#') |
| entityState = NumberType; |
| else if ((cc >= 'a' && cc <= 'z') || (cc >= 'A' && cc <= 'Z')) { |
| entityName.append(cc); |
| entityState = Named; |
| } else |
| return 0; |
| break; |
| case NumberType: |
| if (cc == 'x' || cc == 'X') |
| entityState = MaybeHex; |
| else if (cc >= '0' && cc <= '9') { |
| entityState = Decimal; |
| result = cc - '0'; |
| } else { |
| source.push('#'); |
| return 0; |
| } |
| break; |
| case MaybeHex: |
| if (cc >= '0' && cc <= '9') |
| result = cc - '0'; |
| else if (cc >= 'a' && cc <= 'f') |
| result = 10 + cc - 'a'; |
| else if (cc >= 'A' && cc <= 'F') |
| result = 10 + cc - 'A'; |
| else { |
| source.push('#'); |
| source.push(seenChars[1]); |
| return 0; |
| } |
| entityState = Hex; |
| break; |
| case Hex: |
| if (cc >= '0' && cc <= '9') |
| result = result * 16 + cc - '0'; |
| else if (cc >= 'a' && cc <= 'f') |
| result = result * 16 + 10 + cc - 'a'; |
| else if (cc >= 'A' && cc <= 'F') |
| result = result * 16 + 10 + cc - 'A'; |
| else if (cc == ';') { |
| source.advance(); |
| return legalEntityFor(result); |
| } else |
| return legalEntityFor(result); |
| break; |
| case Decimal: |
| if (cc >= '0' && cc <= '9') |
| result = result * 10 + cc - '0'; |
| else if (cc == ';') { |
| source.advance(); |
| return legalEntityFor(result); |
| } else |
| return legalEntityFor(result); |
| break; |
| case Named: |
| // This is the attribute only version, generic version matches somewhat differently |
| while (entityName.size() <= 8) { |
| if (cc == ';') { |
| const Entity* entity = findEntity(entityName.data(), entityName.size()); |
| if (entity) { |
| source.advance(); |
| return entity->code; |
| } |
| break; |
| } |
| if (!(cc >= 'a' && cc <= 'z') && !(cc >= 'A' && cc <= 'Z') && !(cc >= '0' && cc <= '9')) { |
| const Entity* entity = findEntity(entityName.data(), entityName.size()); |
| if (entity) |
| return entity->code; |
| break; |
| } |
| entityName.append(cc); |
| source.advance(); |
| if (source.isEmpty()) |
| goto outOfCharacters; |
| cc = *source; |
| seenChars.append(cc); |
| } |
| if (seenChars.size() == 2) |
| source.push(seenChars[0]); |
| else if (seenChars.size() == 3) { |
| source.push(seenChars[0]); |
| source.push(seenChars[1]); |
| } else |
| source.prepend(SegmentedString(String(seenChars.data(), seenChars.size() - 1))); |
| return 0; |
| } |
| source.advance(); |
| } |
| outOfCharacters: |
| notEnoughCharacters = true; |
| source.prepend(SegmentedString(String(seenChars.data(), seenChars.size()))); |
| return 0; |
| } |
| |
| void PreloadScanner::tokenize(const SegmentedString& source) |
| { |
| ASSERT(m_inProgress); |
| |
| m_source.append(source); |
| |
| // This is a simplified HTML5 Tokenizer |
| // http://www.whatwg.org/specs/web-apps/current-work/#tokenisation0 |
| while (!m_source.isEmpty()) { |
| UChar cc = *m_source; |
| switch (m_state) { |
| case Data: |
| while (1) { |
| rememberCharacter(cc); |
| if (cc == '&') { |
| if (m_contentModel == PCDATA || m_contentModel == RCDATA) { |
| m_state = EntityData; |
| break; |
| } |
| } else if (cc == '-') { |
| if ((m_contentModel == RCDATA || m_contentModel == CDATA) && !m_escape) { |
| if (lastCharactersMatch("<!--", 4)) |
| m_escape = true; |
| } |
| } else if (cc == '<') { |
| if (m_contentModel == PCDATA || ((m_contentModel == RCDATA || m_contentModel == CDATA) && !m_escape)) { |
| m_state = TagOpen; |
| break; |
| } |
| } else if (cc == '>') { |
| if ((m_contentModel == RCDATA || m_contentModel == CDATA) && m_escape) { |
| if (lastCharactersMatch("-->", 3)) |
| m_escape = false; |
| } |
| } |
| emitCharacter(cc); |
| m_source.advance(); |
| if (m_source.isEmpty()) |
| return; |
| cc = *m_source; |
| } |
| break; |
| case EntityData: |
| // should try to consume the entity but we only care about entities in attributes |
| m_state = Data; |
| break; |
| case TagOpen: |
| if (m_contentModel == RCDATA || m_contentModel == CDATA) { |
| if (cc == '/') |
| m_state = CloseTagOpen; |
| else { |
| m_state = Data; |
| continue; |
| } |
| } else if (m_contentModel == PCDATA) { |
| if (cc == '!') |
| m_state = MarkupDeclarationOpen; |
| else if (cc == '/') |
| m_state = CloseTagOpen; |
| else if (cc >= 'A' && cc <= 'Z') { |
| m_tagName.clear(); |
| m_charset = String(); |
| m_tagName.append(cc + 0x20); |
| m_closeTag = false; |
| m_state = TagName; |
| } else if (cc >= 'a' && cc <= 'z') { |
| m_tagName.clear(); |
| m_charset = String(); |
| m_tagName.append(cc); |
| m_closeTag = false; |
| m_state = TagName; |
| } else if (cc == '>') { |
| m_state = Data; |
| } else if (cc == '?') { |
| m_state = BogusComment; |
| } else { |
| m_state = Data; |
| continue; |
| } |
| } |
| break; |
| case CloseTagOpen: |
| if (m_contentModel == RCDATA || m_contentModel == CDATA) { |
| if (!m_lastStartTag.length()) { |
| m_state = Data; |
| continue; |
| } |
| if (m_source.length() < m_lastStartTag.length() + 1) |
| return; |
| Vector<UChar> tmpString; |
| UChar tmpChar = 0; |
| bool match = true; |
| for (unsigned n = 0; n < m_lastStartTag.length() + 1; n++) { |
| tmpChar = Unicode::toLower(*m_source); |
| if (n < m_lastStartTag.length() && tmpChar != m_lastStartTag[n]) |
| match = false; |
| tmpString.append(tmpChar); |
| m_source.advance(); |
| } |
| m_source.prepend(SegmentedString(String(tmpString.data(), tmpString.size()))); |
| if (!match || (!isWhitespace(tmpChar) && tmpChar != '>' && tmpChar != '/')) { |
| m_state = Data; |
| continue; |
| } |
| } |
| if (cc >= 'A' && cc <= 'Z') { |
| m_tagName.clear(); |
| m_charset = String(); |
| m_tagName.append(cc + 0x20); |
| m_closeTag = true; |
| m_state = TagName; |
| } else if (cc >= 'a' && cc <= 'z') { |
| m_tagName.clear(); |
| m_charset = String(); |
| m_tagName.append(cc); |
| m_closeTag = true; |
| m_state = TagName; |
| } else if (cc == '>') { |
| m_state = Data; |
| } else |
| m_state = BogusComment; |
| break; |
| case TagName: |
| while (1) { |
| if (isWhitespace(cc)) { |
| m_state = BeforeAttributeName; |
| break; |
| } |
| if (cc == '>') { |
| emitTag(); |
| m_state = Data; |
| break; |
| } |
| if (cc == '/') { |
| m_state = BeforeAttributeName; |
| break; |
| } |
| if (cc >= 'A' && cc <= 'Z') |
| m_tagName.append(cc + 0x20); |
| else |
| m_tagName.append(cc); |
| m_source.advance(); |
| if (m_source.isEmpty()) |
| return; |
| cc = *m_source; |
| } |
| break; |
| case BeforeAttributeName: |
| if (isWhitespace(cc)) |
| ; |
| else if (cc == '>') { |
| emitTag(); |
| m_state = Data; |
| } else if (cc >= 'A' && cc <= 'Z') { |
| m_attributeName.clear(); |
| m_attributeValue.clear(); |
| m_attributeName.append(cc + 0x20); |
| m_state = AttributeName; |
| } else if (cc == '/') |
| ; |
| else { |
| m_attributeName.clear(); |
| m_attributeValue.clear(); |
| m_attributeName.append(cc); |
| m_state = AttributeName; |
| } |
| break; |
| case AttributeName: |
| while (1) { |
| if (isWhitespace(cc)) { |
| m_state = AfterAttributeName; |
| break; |
| } |
| if (cc == '=') { |
| m_state = BeforeAttributeValue; |
| break; |
| } |
| if (cc == '>') { |
| emitTag(); |
| m_state = Data; |
| break; |
| } |
| if (cc == '/') { |
| m_state = BeforeAttributeName; |
| break; |
| } |
| if (cc >= 'A' && cc <= 'Z') |
| m_attributeName.append(cc + 0x20); |
| else |
| m_attributeName.append(cc); |
| m_source.advance(); |
| if (m_source.isEmpty()) |
| return; |
| cc = *m_source; |
| } |
| break; |
| case AfterAttributeName: |
| if (isWhitespace(cc)) |
| ; |
| else if (cc == '=') |
| m_state = BeforeAttributeValue; |
| else if (cc == '>') { |
| emitTag(); |
| m_state = Data; |
| } else if (cc >= 'A' && cc <= 'Z') { |
| m_attributeName.clear(); |
| m_attributeValue.clear(); |
| m_attributeName.append(cc + 0x20); |
| m_state = AttributeName; |
| } else if (cc == '/') |
| m_state = BeforeAttributeName; |
| else { |
| m_attributeName.clear(); |
| m_attributeValue.clear(); |
| m_attributeName.append(cc); |
| m_state = AttributeName; |
| } |
| break; |
| case BeforeAttributeValue: |
| if (isWhitespace(cc)) |
| ; |
| else if (cc == '"') |
| m_state = AttributeValueDoubleQuoted; |
| else if (cc == '&') { |
| m_state = AttributeValueUnquoted; |
| continue; |
| } else if (cc == '\'') |
| m_state = AttributeValueSingleQuoted; |
| else if (cc == '>') { |
| emitTag(); |
| m_state = Data; |
| } else { |
| m_attributeValue.append(cc); |
| m_state = AttributeValueUnquoted; |
| } |
| break; |
| case AttributeValueDoubleQuoted: |
| while (1) { |
| if (cc == '"') { |
| processAttribute(); |
| m_state = BeforeAttributeName; |
| break; |
| } |
| if (cc == '&') { |
| m_stateBeforeEntityInAttributeValue = m_state; |
| m_state = EntityInAttributeValue; |
| break; |
| } |
| m_attributeValue.append(cc); |
| m_source.advance(); |
| if (m_source.isEmpty()) |
| return; |
| cc = *m_source; |
| } |
| break; |
| case AttributeValueSingleQuoted: |
| while (1) { |
| if (cc == '\'') { |
| processAttribute(); |
| m_state = BeforeAttributeName; |
| break; |
| } |
| if (cc == '&') { |
| m_stateBeforeEntityInAttributeValue = m_state; |
| m_state = EntityInAttributeValue; |
| break; |
| } |
| m_attributeValue.append(cc); |
| m_source.advance(); |
| if (m_source.isEmpty()) |
| return; |
| cc = *m_source; |
| } |
| break; |
| case AttributeValueUnquoted: |
| while (1) { |
| if (isWhitespace(cc)) { |
| processAttribute(); |
| m_state = BeforeAttributeName; |
| break; |
| } |
| if (cc == '&') { |
| m_stateBeforeEntityInAttributeValue = m_state; |
| m_state = EntityInAttributeValue; |
| break; |
| } |
| if (cc == '>') { |
| processAttribute(); |
| emitTag(); |
| m_state = Data; |
| break; |
| } |
| m_attributeValue.append(cc); |
| m_source.advance(); |
| if (m_source.isEmpty()) |
| return; |
| cc = *m_source; |
| } |
| break; |
| case EntityInAttributeValue: |
| { |
| bool notEnoughCharacters = false; |
| unsigned entity = consumeEntity(m_source, notEnoughCharacters); |
| if (notEnoughCharacters) |
| return; |
| if (entity > 0xFFFF) { |
| m_attributeValue.append(U16_LEAD(entity)); |
| m_attributeValue.append(U16_TRAIL(entity)); |
| } else if (entity) |
| m_attributeValue.append(entity); |
| else |
| m_attributeValue.append('&'); |
| } |
| m_state = m_stateBeforeEntityInAttributeValue; |
| continue; |
| case BogusComment: |
| while (1) { |
| if (cc == '>') { |
| m_state = Data; |
| break; |
| } |
| m_source.advance(); |
| if (m_source.isEmpty()) |
| return; |
| cc = *m_source; |
| } |
| break; |
| case MarkupDeclarationOpen: { |
| if (cc == '-') { |
| if (m_source.length() < 2) |
| return; |
| m_source.advance(); |
| cc = *m_source; |
| if (cc == '-') |
| m_state = CommentStart; |
| else { |
| m_state = BogusComment; |
| continue; |
| } |
| // If we cared about the DOCTYPE we would test to enter those states here |
| } else { |
| m_state = BogusComment; |
| continue; |
| } |
| break; |
| } |
| case CommentStart: |
| if (cc == '-') |
| m_state = CommentStartDash; |
| else if (cc == '>') |
| m_state = Data; |
| else |
| m_state = Comment; |
| break; |
| case CommentStartDash: |
| if (cc == '-') |
| m_state = CommentEnd; |
| else if (cc == '>') |
| m_state = Data; |
| else |
| m_state = Comment; |
| break; |
| case Comment: |
| while (1) { |
| if (cc == '-') { |
| m_state = CommentEndDash; |
| break; |
| } |
| m_source.advance(); |
| if (m_source.isEmpty()) |
| return; |
| cc = *m_source; |
| } |
| break; |
| case CommentEndDash: |
| if (cc == '-') |
| m_state = CommentEnd; |
| else |
| m_state = Comment; |
| break; |
| case CommentEnd: |
| if (cc == '>') |
| m_state = Data; |
| else if (cc == '-') |
| ; |
| else |
| m_state = Comment; |
| break; |
| } |
| m_source.advance(); |
| } |
| } |
| |
| void PreloadScanner::processAttribute() |
| { |
| AtomicString tag = AtomicString(m_tagName.data(), m_tagName.size()); |
| AtomicString attribute = AtomicString(m_attributeName.data(), m_attributeName.size()); |
| |
| String value(m_attributeValue.data(), m_attributeValue.size()); |
| if (tag == scriptTag || tag == imgTag) { |
| if (attribute == srcAttr && m_urlToLoad.isEmpty()) |
| m_urlToLoad = parseURL(value); |
| else if (attribute == charsetAttr) |
| m_charset = value; |
| } else if (tag == linkTag) { |
| if (attribute == hrefAttr && m_urlToLoad.isEmpty()) |
| m_urlToLoad = parseURL(value); |
| else if (attribute == relAttr) { |
| bool styleSheet = false; |
| bool alternate = false; |
| bool icon = false; |
| bool dnsPrefetch = false; |
| HTMLLinkElement::tokenizeRelAttribute(value, styleSheet, alternate, icon, dnsPrefetch); |
| m_linkIsStyleSheet = styleSheet && !alternate && !icon && !dnsPrefetch; |
| } else if (attribute == charsetAttr) |
| m_charset = value; |
| } |
| } |
| |
| inline void PreloadScanner::emitCharacter(UChar c) |
| { |
| if (m_contentModel == CDATA && m_lastStartTag == styleTag) |
| tokenizeCSS(c); |
| } |
| |
| inline void PreloadScanner::tokenizeCSS(UChar c) |
| { |
| // We are just interested in @import rules, no need for real tokenization here |
| // Searching for other types of resources is probably low payoff |
| switch (m_cssState) { |
| case CSSInitial: |
| if (c == '@') |
| m_cssState = CSSRuleStart; |
| else if (c == '/') |
| m_cssState = CSSMaybeComment; |
| break; |
| case CSSMaybeComment: |
| if (c == '*') |
| m_cssState = CSSComment; |
| else |
| m_cssState = CSSInitial; |
| break; |
| case CSSComment: |
| if (c == '*') |
| m_cssState = CSSMaybeCommentEnd; |
| break; |
| case CSSMaybeCommentEnd: |
| if (c == '/') |
| m_cssState = CSSInitial; |
| else if (c == '*') |
| ; |
| else |
| m_cssState = CSSComment; |
| break; |
| case CSSRuleStart: |
| if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z')) { |
| m_cssRule.clear(); |
| m_cssRuleValue.clear(); |
| m_cssRule.append(c); |
| m_cssState = CSSRule; |
| } else |
| m_cssState = CSSInitial; |
| break; |
| case CSSRule: |
| if (isWhitespace(c)) |
| m_cssState = CSSAfterRule; |
| else if (c == ';') |
| m_cssState = CSSInitial; |
| else |
| m_cssRule.append(c); |
| break; |
| case CSSAfterRule: |
| if (isWhitespace(c)) |
| ; |
| else if (c == ';') |
| m_cssState = CSSInitial; |
| else { |
| m_cssState = CSSRuleValue; |
| m_cssRuleValue.append(c); |
| } |
| break; |
| case CSSRuleValue: |
| if (isWhitespace(c)) |
| m_cssState = CSSAfterRuleValue; |
| else if (c == ';') { |
| emitCSSRule(); |
| m_cssState = CSSInitial; |
| } else |
| m_cssRuleValue.append(c); |
| break; |
| case CSSAfterRuleValue: |
| if (isWhitespace(c)) |
| ; |
| else if (c == ';') { |
| emitCSSRule(); |
| m_cssState = CSSInitial; |
| } else { |
| // FIXME media rules |
| m_cssState = CSSInitial; |
| } |
| break; |
| } |
| } |
| |
| void PreloadScanner::emitTag() |
| { |
| if (m_closeTag) { |
| m_contentModel = PCDATA; |
| m_cssState = CSSInitial; |
| clearLastCharacters(); |
| return; |
| } |
| |
| AtomicString tag(m_tagName.data(), m_tagName.size()); |
| m_lastStartTag = tag; |
| |
| if (tag == textareaTag || tag == titleTag) |
| m_contentModel = RCDATA; |
| else if (tag == styleTag || tag == xmpTag || tag == scriptTag || tag == iframeTag || tag == noembedTag || tag == noframesTag) |
| m_contentModel = CDATA; |
| else if (tag == noscriptTag) |
| // we wouldn't be here if scripts were disabled |
| m_contentModel = CDATA; |
| else if (tag == plaintextTag) |
| m_contentModel = PLAINTEXT; |
| else |
| m_contentModel = PCDATA; |
| |
| if (tag == bodyTag) |
| m_bodySeen = true; |
| |
| if (m_urlToLoad.isEmpty()) { |
| m_linkIsStyleSheet = false; |
| return; |
| } |
| |
| if (tag == scriptTag) |
| m_document->docLoader()->preload(CachedResource::Script, m_urlToLoad, m_charset, scanningBody()); |
| else if (tag == imgTag) |
| m_document->docLoader()->preload(CachedResource::ImageResource, m_urlToLoad, String(), scanningBody()); |
| else if (tag == linkTag && m_linkIsStyleSheet) |
| m_document->docLoader()->preload(CachedResource::CSSStyleSheet, m_urlToLoad, m_charset, scanningBody()); |
| |
| m_urlToLoad = String(); |
| m_charset = String(); |
| m_linkIsStyleSheet = false; |
| } |
| |
| void PreloadScanner::emitCSSRule() |
| { |
| String rule(m_cssRule.data(), m_cssRule.size()); |
| if (equalIgnoringCase(rule, "import") && !m_cssRuleValue.isEmpty()) { |
| String value(m_cssRuleValue.data(), m_cssRuleValue.size()); |
| String url = parseURL(value); |
| if (!url.isEmpty()) |
| m_document->docLoader()->preload(CachedResource::CSSStyleSheet, url, String(), scanningBody()); |
| } |
| m_cssRule.clear(); |
| m_cssRuleValue.clear(); |
| } |
| |
| } |
