/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- * * The contents of this file are subject to the Netscape Public License * Version 1.0 (the "NPL"); you may not use this file except in * compliance with the NPL. You may obtain a copy of the NPL at * http://www.mozilla.org/NPL/ * * Software distributed under the NPL is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL * for the specific language governing rights and limitations under the * NPL. * * The Initial Developer of this code under the NPL is Netscape * Communications Corporation. Portions created by Netscape are * Copyright (C) 1998 Netscape Communications Corporation. All Rights * Reserved. */ #include "nsICSSParser.h" #include "nsCSSProps.h" #include "nsCSSKeywords.h" #include "nsCSSScanner.h" #include "nsICSSStyleRule.h" #include "nsIUnicharInputStream.h" #include "nsIStyleSet.h" #include "nsICSSStyleSheet.h" #include "nsICSSDeclaration.h" #include "nsStyleConsts.h" #include "nsIURL.h" #include "nsString.h" #include "nsIAtom.h" #include "nsVoidArray.h" #include "nsColor.h" #include "nsStyleConsts.h" // XXX TODO: // - rework aErrorCode stuff: switch over to nsresult // - bug: "color: red {fish};" emits a property for color instead of zapping it static NS_DEFINE_IID(kICSSParserIID, NS_ICSS_PARSER_IID); static NS_DEFINE_IID(kICSSStyleSheetIID, NS_ICSS_STYLE_SHEET_IID); static NS_DEFINE_IID(kIStyleSheetIID, NS_ISTYLE_SHEET_IID); // XXX cell-padding, spacing, etc.??? struct Selector { nsString mTag; // weight 1 nsString mID; // weight 100 nsString mClass; // weight 10 nsString mPseudoClass; // weight 10 (== class) nsString mPseudoElement; // weight 10 (== class) ?? PRUint32 mMask; // which fields have values Selector(); ~Selector(); PRInt32 Weight() const; #ifdef NS_DEBUG void Dump() const; #endif }; #define SELECTOR_TAG 0x01 #define SELECTOR_ID 0x02 #define SELECTOR_CLASS 0x04 #define SELECTOR_PSEUDO_CLASS 0x08 #define SELECTOR_PSEUDO_ELEMENT 0x10 #define SELECTOR_WEIGHT_BASE 10 Selector::Selector() { mMask = 0; } Selector::~Selector() { } PRInt32 Selector::Weight() const { return (((0 != (SELECTOR_TAG & mMask)) ? 1 : 0) + ((0 != (SELECTOR_ID & mMask)) ? (SELECTOR_WEIGHT_BASE * SELECTOR_WEIGHT_BASE) : 0) + ((0 != ((SELECTOR_CLASS | SELECTOR_PSEUDO_CLASS | SELECTOR_PSEUDO_ELEMENT) & mMask)) ? SELECTOR_WEIGHT_BASE : 0)); } #ifdef NS_DEBUG void Selector::Dump() const { PRBool needSpace = PR_FALSE; if (mTag.Length() > 0) { fputs(mTag, stdout); needSpace = PR_TRUE; } if (mID.Length() > 0) { if (needSpace) fputs(" ", stdout); fputs("#", stdout); fputs(mID, stdout); needSpace = PR_TRUE; } if (mClass.Length() > 0) { if (needSpace) fputs(" ", stdout); fputs(".", stdout); fputs(mClass, stdout); needSpace = PR_TRUE; } if (mPseudoClass.Length() > 0) { if (needSpace) fputs(" ", stdout); fputs(":", stdout); fputs(mPseudoClass, stdout); needSpace = PR_TRUE; } if (mPseudoElement.Length() > 0) { if (needSpace) fputs(" ", stdout); fputs(":", stdout); fputs(mPseudoElement, stdout); needSpace = PR_TRUE; } } #endif // e.g. "P B, H1 B { ... }" has a selector list with two elements, // each of which has two selectors. struct SelectorList { SelectorList* mNext; nsVoidArray mSelectors; SelectorList(); void Destroy(); void AddSelector(Selector* aSelector) { mSelectors.AppendElement(aSelector); } #ifdef NS_DEBUG void Dump(); #endif private: ~SelectorList(); }; SelectorList::SelectorList() { mNext = nsnull; } SelectorList::~SelectorList() { PRInt32 n = mSelectors.Count(); for (PRInt32 i = 0; i < n; i++) { Selector* sel = (Selector*) mSelectors.ElementAt(i); delete sel; } } void SelectorList::Destroy() { SelectorList* list = this; while (nsnull != list) { SelectorList* next = list->mNext; delete list; list = next; } } #ifdef NS_DEBUG void SelectorList::Dump() { PRInt32 n = mSelectors.Count(); for (PRInt32 i = 0; i < n; i++) { Selector* sel = (Selector*) mSelectors.ElementAt(i); sel->Dump(); fputs(" ", stdout); } if (mNext) { fputs(", ", stdout); mNext->Dump(); } } #endif //---------------------------------------------------------------------- // Your basic top-down recursive descent style parser class CSSParserImpl : public nsICSSParser { public: CSSParserImpl(); CSSParserImpl(nsICSSStyleSheet* aSheet); ~CSSParserImpl(); NS_DECL_ISUPPORTS NS_IMETHOD GetInfoMask(PRUint32& aResult); NS_IMETHOD SetStyleSheet(nsIStyleSheet* aSheet); NS_IMETHOD Parse(nsIUnicharInputStream* aInput, nsIURL* aInputURL, nsIStyleSheet*& aResult); NS_IMETHOD ParseDeclarations(const nsString& aDeclaration, nsIURL* aBaseURL, nsIStyleRule*& aResult); protected: PRBool GetToken(PRInt32* aErrorCode, PRBool aSkipWS); void UngetToken(); PRBool ExpectSymbol(PRInt32* aErrorCode, char aSymbol, PRBool aSkipWS); nsString* NextIdent(PRInt32* aErrorCode); void SkipUntil(PRInt32* aErrorCode, PRUnichar aStopSymbol); void SkipRuleSet(PRInt32* aErrorCode); PRBool SkipDeclaration(PRInt32* aErrorCode, PRBool aCheckForBraces); PRBool ParseRuleSet(PRInt32* aErrorCode); PRBool ParseAtRule(PRInt32* aErrorCode); PRBool ParseImportRule(PRInt32* aErrorCode); PRBool ParseSelectorGroup(PRInt32* aErrorCode, SelectorList* aListHead); PRBool ParseSelectorList(PRInt32* aErrorCode, SelectorList* aListHead); PRBool ParseSelector(PRInt32* aErrorCode, Selector* aSelectorResult); nsICSSDeclaration* ParseDeclarationBlock(PRInt32* aErrorCode, PRBool aCheckForBraces); PRBool ParseDeclaration(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, PRBool aCheckForBraces); PRBool ParseProperty(PRInt32* aErrorCode, const char* aName, nsICSSDeclaration* aDeclaration); PRBool ParseProperty(PRInt32* aErrorCode, const char* aName, nsICSSDeclaration* aDeclaration, PRInt32 aID); // Property specific parsing routines PRBool ParseBackground(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration); PRBool ParseBackgroundFilter(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName); PRBool ParseForegroundFilter(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName); PRBool ParseBackgroundPosition(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName); PRBool ParseBorder(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration); PRBool ParseBorderColor(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration); PRBool ParseBorderSide(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aNames[], PRInt32 aWhichSide); PRBool ParseBorderStyle(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration); PRBool ParseBorderWidth(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration); PRBool ParseClip(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration); PRBool ParseFont(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName); PRBool ParseFontFamily(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName); PRBool ParseFontWeight(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName); PRBool ParseListStyle(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration); PRBool ParseMargin(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration); PRBool ParsePadding(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration); PRBool ParseTextDecoration(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName); // Reused utility parsing routines PRBool ParseBoxProperties(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aNames[]); PRInt32 ParseChoice(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aNames[], PRInt32 aNumNames); PRBool ParseColor(PRInt32* aErrorCode, nscolor* aColorResult); PRBool ParseColorComponent(PRInt32* aErrorCode, PRUint8* aComponent, char aStop); PRBool ParseEnum(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName, PRInt32* aTable); PRInt32 SearchKeywordTable(PRInt32 aID, PRInt32 aTable[]); PRBool ParseVariant(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName, PRInt32 aVariant, PRInt32* aTable); PRBool TranslateLength(nsICSSDeclaration* aDeclaration, const char* aName, float aNumber, const nsString& aDimension); void ProcessImport(const nsString& aURLSpec); // Current token. The value is valid after calling GetToken nsCSSToken mToken; // After an UngetToken is done this flag is true. The next call to // GetToken clears the flag. PRBool mHavePushBack; nsCSSScanner* mScanner; nsIURL* mURL; nsICSSStyleSheet* mSheet; PRBool mInHead; }; NS_HTML nsresult NS_NewCSSParser(nsICSSParser** aInstancePtrResult) { CSSParserImpl *it = new CSSParserImpl(); if (it == nsnull) { return NS_ERROR_OUT_OF_MEMORY; } return it->QueryInterface(kICSSParserIID, (void **) aInstancePtrResult); } CSSParserImpl::CSSParserImpl() { NS_INIT_REFCNT(); mScanner = nsnull; mSheet = nsnull; mHavePushBack = PR_FALSE; } CSSParserImpl::CSSParserImpl(nsICSSStyleSheet* aSheet) { NS_INIT_REFCNT(); mScanner = nsnull; mSheet = aSheet; aSheet->AddRef(); mHavePushBack = PR_FALSE; } NS_IMPL_ISUPPORTS(CSSParserImpl,kICSSParserIID) CSSParserImpl::~CSSParserImpl() { NS_IF_RELEASE(mSheet); } NS_METHOD CSSParserImpl::GetInfoMask(PRUint32& aResult) { aResult = NS_CSS_GETINFO_CSS1 | NS_CSS_GETINFO_CSSP; return NS_OK; } NS_METHOD CSSParserImpl::SetStyleSheet(nsIStyleSheet* aSheet) { NS_PRECONDITION(nsnull != aSheet, "null ptr"); if (nsnull == aSheet) { return NS_ERROR_NULL_POINTER; } // Make sure the sheet supports the correct interface! static NS_DEFINE_IID(kICSSStyleSheetIID, NS_ICSS_STYLE_SHEET_IID); nsICSSStyleSheet* cssSheet; nsresult rv = aSheet->QueryInterface(kICSSStyleSheetIID, (void**)&cssSheet); if (NS_OK != rv) { return rv; } // Switch to using the new sheet NS_IF_RELEASE(mSheet); mSheet = cssSheet; return NS_OK; } NS_METHOD CSSParserImpl::Parse(nsIUnicharInputStream* aInput, nsIURL* aInputURL, nsIStyleSheet*& aResult) { if (nsnull == mSheet) { NS_NewCSSStyleSheet(&mSheet, aInputURL); } PRInt32 errorCode = NS_OK; mScanner = new nsCSSScanner(); mScanner->Init(aInput); mURL = aInputURL; if (nsnull != aInputURL) { aInputURL->AddRef(); } mInHead = PR_TRUE; nsCSSToken* tk = &mToken; for (;;) { // Get next non-whitespace token if (!GetToken(&errorCode, PR_TRUE)) { break; } if (eCSSToken_AtKeyword == tk->mType) { ParseAtRule(&errorCode); continue; } else if (eCSSToken_Symbol == tk->mType) { // Discard dangling semicolons. This is not part of the CSS1 // forward compatible parsing spec, but it makes alot of sense. if (';' == tk->mSymbol) { continue; } } mInHead = PR_FALSE; UngetToken(); ParseRuleSet(&errorCode); } delete mScanner; mScanner = nsnull; NS_IF_RELEASE(mURL); nsIStyleSheet* sheet = nsnull; mSheet->QueryInterface(kIStyleSheetIID, (void**)&sheet); aResult = sheet; return NS_OK; } NS_METHOD CSSParserImpl::ParseDeclarations(const nsString& aDeclaration, nsIURL* aBaseURL, nsIStyleRule*& aResult) { nsString* str = new nsString(aDeclaration); if (nsnull == str) { return NS_ERROR_OUT_OF_MEMORY; } nsIUnicharInputStream* input = nsnull; nsresult rv = NS_NewStringUnicharInputStream(&input, str); if (NS_OK != rv) { return rv; } mScanner = new nsCSSScanner(); mScanner->Init(input); NS_RELEASE(input); mURL = aBaseURL; NS_IF_ADDREF(mURL); mInHead = PR_FALSE; PRInt32 errorCode = NS_OK; nsICSSDeclaration* declaration = ParseDeclarationBlock(&errorCode, PR_FALSE); if (nsnull != declaration) { // Create a style rule for the delcaration nsICSSStyleRule* rule = nsnull; NS_NewCSSStyleRule(&rule, nsCSSSelector()); rule->SetDeclaration(declaration); rule->SetWeight(0x7fffffff); aResult = rule; } else { aResult = nsnull; } delete mScanner; mScanner = nsnull; NS_IF_RELEASE(mURL); return NS_OK; } //---------------------------------------------------------------------- PRBool CSSParserImpl::GetToken(PRInt32* aErrorCode, PRBool aSkipWS) { for (;;) { if (!mHavePushBack) { if (!mScanner->Next(aErrorCode, &mToken)) { break; } } mHavePushBack = PR_FALSE; if (aSkipWS && (eCSSToken_WhiteSpace == mToken.mType)) { continue; } return PR_TRUE; } return PR_FALSE; } void CSSParserImpl::UngetToken() { NS_PRECONDITION(mHavePushBack == PR_FALSE, "double pushback"); mHavePushBack = PR_TRUE; } PRBool CSSParserImpl::ExpectSymbol(PRInt32* aErrorCode, char aSymbol, PRBool aSkipWS) { if (!GetToken(aErrorCode, aSkipWS)) { return PR_FALSE; } nsCSSToken* tk = &mToken; if ((eCSSToken_Symbol == tk->mType) && (aSymbol == tk->mSymbol)) { return PR_TRUE; } UngetToken(); return PR_FALSE; } nsString* CSSParserImpl::NextIdent(PRInt32* aErrorCode) { if (!GetToken(aErrorCode, PR_TRUE)) { return nsnull; } if (eCSSToken_Ident != mToken.mType) { UngetToken(); return nsnull; } return &mToken.mIdent; } // XXX @media type {, types } '{' rules '}' // XXX @font-face // XXX @page { :left | :right } '{' declarations '}' PRBool CSSParserImpl::ParseAtRule(PRInt32* aErrorCode) { nsCSSToken* tk = &mToken; if (mInHead && tk->mIdent.EqualsIgnoreCase("import")) { ParseImportRule(aErrorCode); return PR_TRUE; } // Skip over unsupported at rule for (;;) { if (!GetToken(aErrorCode, PR_TRUE)) { return PR_FALSE; } if (eCSSToken_Symbol == tk->mType) { PRUnichar symbol = tk->mSymbol; if (symbol == ';') { break; } if (symbol == '{') { SkipUntil(aErrorCode, '}'); break; } else if (symbol == '(') { SkipUntil(aErrorCode, ')'); } else if (symbol == '[') { SkipUntil(aErrorCode, ']'); } } } mInHead = PR_FALSE; return PR_TRUE; } // Parse a CSS1 import rule: "@import STRING | URL" PRBool CSSParserImpl::ParseImportRule(PRInt32* aErrorCode) { nsCSSToken* tk = &mToken; if (!GetToken(aErrorCode, PR_TRUE)) { return PR_FALSE; } if ((eCSSToken_String == tk->mType) || (eCSSToken_URL == tk->mType)) { if (ExpectSymbol(aErrorCode, ';', PR_TRUE)) { ProcessImport(tk->mIdent); return PR_TRUE; } if ((eCSSToken_Symbol != tk->mType) || (';' != tk->mSymbol)) { SkipUntil(aErrorCode, ';'); } } mInHead = PR_FALSE; return PR_TRUE; } void CSSParserImpl::ProcessImport(const nsString& aURLSpec) { // XXX probably need a way to encode unicode junk for the part of // the url that follows a "?" char* cp = aURLSpec.ToNewCString(); nsIURL* url; nsresult rv = NS_NewURL(&url, mURL, cp); delete cp; if (NS_OK != rv) { // import url is bad // XXX log this somewhere for easier web page debugging return; } if (PR_FALSE == mSheet->ContainsStyleSheet(url)) { // don't allow circular references PRInt32 ec; nsIInputStream* in = url->Open(&ec); if (nsnull == in) { // failure to make connection // XXX log this somewhere for easier web page debugging } else { nsIUnicharInputStream* uin; rv = NS_NewConverterStream(&uin, nsnull, in); if (NS_OK != rv) { // XXX no iso-latin-1 converter? out of memory? NS_RELEASE(in); } else { NS_RELEASE(in); // Create a new parse to parse the import. if (NS_OK == rv) { nsICSSParser* parser; rv = NS_NewCSSParser(&parser); if (NS_OK == rv) { nsIStyleSheet* childSheet = nsnull; rv = parser->Parse(uin, url, childSheet); NS_RELEASE(parser); if ((NS_OK == rv) && (nsnull != childSheet)) { nsICSSStyleSheet* cssChild = nsnull; if (NS_OK == childSheet->QueryInterface(kICSSStyleSheetIID, (void**)&cssChild)) { mSheet->AppendStyleSheet(cssChild); NS_RELEASE(cssChild); } } NS_IF_RELEASE(childSheet); } } NS_RELEASE(uin); } } } NS_RELEASE(url); } void CSSParserImpl::SkipUntil(PRInt32* aErrorCode, PRUnichar aStopSymbol) { nsCSSToken* tk = &mToken; for (;;) { if (!GetToken(aErrorCode, PR_TRUE)) { break; } if (eCSSToken_Symbol == tk->mType) { PRUnichar symbol = tk->mSymbol; if (symbol == aStopSymbol) { break; } else if ('{' == symbol) { SkipUntil(aErrorCode, '}'); } else if ('[' == symbol) { SkipUntil(aErrorCode, ']'); } else if ('(' == symbol) { SkipUntil(aErrorCode, ')'); } } } } PRBool CSSParserImpl::SkipDeclaration(PRInt32* aErrorCode, PRBool aCheckForBraces) { nsCSSToken* tk = &mToken; for (;;) { if (!GetToken(aErrorCode, PR_TRUE)) { return PR_FALSE; } if (eCSSToken_Symbol == tk->mType) { PRUnichar symbol = tk->mSymbol; if (';' == symbol) { break; } if (aCheckForBraces) { if ('}' == symbol) { UngetToken(); break; } } if ('{' == symbol) { SkipUntil(aErrorCode, '}'); } else if ('(' == symbol) { SkipUntil(aErrorCode, ')'); } else if ('[' == symbol) { SkipUntil(aErrorCode, ']'); } } } return PR_TRUE; } void CSSParserImpl::SkipRuleSet(PRInt32* aErrorCode) { nsCSSToken* tk = &mToken; for (;;) { if (!GetToken(aErrorCode, PR_TRUE)) { break; } if (eCSSToken_Symbol == tk->mType) { PRUnichar symbol = tk->mSymbol; if ('{' == symbol) { SkipUntil(aErrorCode, '}'); break; } if ('(' == symbol) { SkipUntil(aErrorCode, ')'); } else if ('[' == symbol) { SkipUntil(aErrorCode, ']'); } } } } PRBool CSSParserImpl::ParseRuleSet(PRInt32* aErrorCode) { nsCSSToken* tk = &mToken; // First get the list of selectors for the rule SelectorList *slist = new SelectorList(); if (!ParseSelectorList(aErrorCode, slist)) { SkipRuleSet(aErrorCode); slist->Destroy(); return PR_FALSE; } // Next parse the declaration block nsICSSDeclaration* declaration = ParseDeclarationBlock(aErrorCode, PR_TRUE); if (nsnull == declaration) { // XXX skip something here slist->Destroy(); return PR_FALSE; } #if 0 slist->Dump(); fputs("{\n", stdout); declaration->List(); fputs("}\n", stdout); #endif // Translate the selector list and declaration block into style data SelectorList* list = slist; nsCSSSelector selector; nsICSSStyleRule* rule = nsnull; while (nsnull != list) { PRInt32 selIndex = list->mSelectors.Count(); Selector* sel = (Selector*)list->mSelectors[--selIndex]; if (0 < sel->mPseudoElement.Length()) { // only pseudo elements at end selector nsString nullStr; selector.Set(sel->mPseudoElement, nullStr, nullStr, nullStr); NS_NewCSSStyleRule(&rule, selector); } selector.Set(sel->mTag, sel->mID, sel->mClass, sel->mPseudoClass); PRInt32 weight = sel->Weight(); if (nsnull == rule) { NS_NewCSSStyleRule(&rule, selector); } else { rule->AddSelector(selector); } if (nsnull != rule) { while (--selIndex >= 0) { Selector* sel = (Selector*)list->mSelectors[selIndex]; selector.Set(sel->mTag, sel->mID, sel->mClass, sel->mPseudoClass); rule->AddSelector(selector); weight += sel->Weight(); } rule->SetDeclaration(declaration); rule->SetWeight(weight); // rule->List(); mSheet->AppendStyleRule(rule); NS_RELEASE(rule); } list = list->mNext; } // Release temporary storage slist->Destroy(); NS_RELEASE(declaration); return PR_TRUE; } PRBool CSSParserImpl::ParseSelectorList(PRInt32* aErrorCode, SelectorList* aListHead) { if (!ParseSelectorGroup(aErrorCode, aListHead)) { // must have at least one selector group return PR_FALSE; } // After that there must either be a "," or a "{" nsCSSToken* tk = &mToken; for (;;) { if (!GetToken(aErrorCode, PR_TRUE)) { return PR_FALSE; } if (eCSSToken_Symbol != tk->mType) { UngetToken(); return PR_FALSE; } if (',' == tk->mSymbol) { // Another selector group must follow SelectorList* newList = new SelectorList(); if (!ParseSelectorGroup(aErrorCode, newList)) { newList->Destroy(); return PR_FALSE; } // add new list to the end of the selector list aListHead->mNext = newList; aListHead = newList; continue; } else if ('{' == tk->mSymbol) { UngetToken(); break; } else { UngetToken(); return PR_FALSE; } } return PR_TRUE; } PRBool CSSParserImpl::ParseSelectorGroup(PRInt32* aErrorCode, SelectorList* aList) { for (;;) { Selector* sel = new Selector(); if (!ParseSelector(aErrorCode, sel)) { delete sel; break; } aList->AddSelector(sel); } return (PRBool) (aList->mSelectors.Count() > 0); } static PRBool IsPseudoClass(const nsString& aBuffer) { return (aBuffer.EqualsIgnoreCase("link") || aBuffer.EqualsIgnoreCase("visited") || aBuffer.EqualsIgnoreCase("hover") || aBuffer.EqualsIgnoreCase("out-of-date") || // our extension aBuffer.EqualsIgnoreCase("active")); } /** * These are the 15 possible kinds of CSS1 style selectors: * */ PRBool CSSParserImpl::ParseSelector(PRInt32* aErrorCode, Selector* aSelectorResult) { PRUint32 mask = 0; aSelectorResult->mTag.Truncate(0); aSelectorResult->mClass.Truncate(0); aSelectorResult->mID.Truncate(0); aSelectorResult->mPseudoClass.Truncate(0); aSelectorResult->mPseudoElement.Truncate(0); nsCSSToken* tk = &mToken; if (!GetToken(aErrorCode, PR_TRUE)) { return PR_FALSE; } if (eCSSToken_Ident == tk->mType) { // tag mask |= SELECTOR_TAG; aSelectorResult->mTag.Append(tk->mIdent); if (!GetToken(aErrorCode, PR_FALSE)) { // premature eof is ok (here!) return PR_TRUE; } } if (eCSSToken_ID == tk->mType) { // #id if ((1 < tk->mIdent.Length()) && (nsString::IsAlpha(tk->mIdent.CharAt(1)))) { // verify is legal ID mask |= SELECTOR_ID; aSelectorResult->mID.Append(tk->mIdent); if (!GetToken(aErrorCode, PR_FALSE)) { // premature eof is ok (here!) return PR_TRUE; } } else { return PR_FALSE; } } if ((eCSSToken_Symbol == tk->mType) && ('.' == tk->mSymbol)) { // .class if (!GetToken(aErrorCode, PR_FALSE)) { return PR_FALSE; } if (eCSSToken_Ident != tk->mType) { // malformed selector UngetToken(); return PR_FALSE; } mask |= SELECTOR_CLASS; aSelectorResult->mClass.Append(tk->mIdent); if (!GetToken(aErrorCode, PR_FALSE)) { // premature eof is ok (here!) return PR_TRUE; } } if ((eCSSToken_Symbol == tk->mType) && (':' == tk->mSymbol)) { // :pseudo if (!GetToken(aErrorCode, PR_FALSE)) { // premature eof return PR_FALSE; } if (eCSSToken_Ident != tk->mType) { // malformed selector UngetToken(); return PR_FALSE; } if (IsPseudoClass(tk->mIdent)) { mask |= SELECTOR_PSEUDO_CLASS; aSelectorResult->mPseudoClass.Append(tk->mIdent); } else { mask |= SELECTOR_PSEUDO_ELEMENT; aSelectorResult->mPseudoElement.Append(':'); // keep the colon aSelectorResult->mPseudoElement.Append(tk->mIdent); } if (!GetToken(aErrorCode, PR_FALSE)) { // premature eof is ok (here!) return PR_TRUE; } } if ((eCSSToken_Symbol == tk->mType) && (':' == tk->mSymbol)) { // :pseudo if (!GetToken(aErrorCode, PR_FALSE)) { // premature eof return PR_FALSE; } if (eCSSToken_Ident != tk->mType) { // malformed selector UngetToken(); return PR_FALSE; } if (! IsPseudoClass(tk->mIdent)) { mask |= SELECTOR_PSEUDO_ELEMENT; aSelectorResult->mPseudoElement.Truncate(0); aSelectorResult->mPseudoElement.Append(':'); // keep the colon aSelectorResult->mPseudoElement.Append(tk->mIdent); } tk = nsnull; } if (nsnull != tk) { UngetToken(); } if (mask == 0) { return PR_FALSE; } aSelectorResult->mMask = mask; return PR_TRUE; } nsICSSDeclaration* CSSParserImpl::ParseDeclarationBlock(PRInt32* aErrorCode, PRBool aCheckForBraces) { if (aCheckForBraces) { if (!ExpectSymbol(aErrorCode, '{', PR_TRUE)) { return nsnull; } } nsICSSDeclaration* declaration = nsnull; if (NS_OK == NS_NewCSSDeclaration(&declaration)) { PRInt32 count = 0; for (;;) { if (ParseDeclaration(aErrorCode, declaration, aCheckForBraces)) { count++; // count declarations } else { if (!SkipDeclaration(aErrorCode, aCheckForBraces)) { break; } if (aCheckForBraces) { if (ExpectSymbol(aErrorCode, '}', PR_TRUE)) { break; } } // Since the skipped declaration didn't end the block we parse // the next declaration. } } if (0 == count) { // didn't get any XXX is this ok with the DOM? NS_RELEASE(declaration); } } return declaration; } PRBool CSSParserImpl::ParseColor(PRInt32* aErrorCode, nscolor* aColorResult) { char cbuf[50]; if (!GetToken(aErrorCode, PR_TRUE)) { return PR_FALSE; } nsCSSToken* tk = &mToken; switch (tk->mType) { case eCSSToken_ID: // #xxyyzz tk->mIdent.ToCString(cbuf, sizeof(cbuf)); if (NS_HexToRGB(cbuf, aColorResult)) { return PR_TRUE; } break; case eCSSToken_Ident: if (!tk->mIdent.EqualsIgnoreCase("rgb")) { // named color (maybe!) tk->mIdent.ToCString(cbuf, sizeof(cbuf)); if (NS_ColorNameToRGB(cbuf, aColorResult)) { return PR_TRUE; } } else { // rgb ( component , component , component ) PRUint8 r, g, b; if (ExpectSymbol(aErrorCode, '(', PR_TRUE) && ParseColorComponent(aErrorCode, &r, ',') && ParseColorComponent(aErrorCode, &g, ',') && ParseColorComponent(aErrorCode, &b, ')')) { *aColorResult = NS_RGB(r,g,b); return PR_TRUE; } } break; default: break; } // It's not a color UngetToken(); return PR_FALSE; } PRBool CSSParserImpl::ParseColorComponent(PRInt32* aErrorCode, PRUint8* aComponent, char aStop) { if (!GetToken(aErrorCode, PR_TRUE)) { return PR_FALSE; } float value; nsCSSToken* tk = &mToken; switch (tk->mType) { case eCSSToken_Number: value = tk->mNumber; break; case eCSSToken_Percentage: value = tk->mNumber * 255.0f; break; default: UngetToken(); return PR_FALSE; } if (ExpectSymbol(aErrorCode, aStop, PR_TRUE)) { if (value < 0.0f) value = 0.0f; if (value > 255.0f) value = 255.0f; *aComponent = (PRUint8) value; return PR_TRUE; } return PR_FALSE; } //---------------------------------------------------------------------- PRBool CSSParserImpl::ParseDeclaration(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, PRBool aCheckForBraces) { // Get property name nsCSSToken* tk = &mToken; for (;;) { if (!GetToken(aErrorCode, PR_TRUE)) { return PR_FALSE; } if (eCSSToken_Ident == tk->mType) { if (!ExpectSymbol(aErrorCode, ':', PR_TRUE)) { return PR_FALSE; } break; } if ((eCSSToken_Symbol == tk->mType) && (';' == tk->mSymbol)) { // dangling semicolons are skipped continue; } // Not a declaration... UngetToken(); return PR_FALSE; } // Map property name to it's ID and then parse the property char propertyName[100]; tk->mIdent.ToCString(propertyName, sizeof(propertyName)); if (!ParseProperty(aErrorCode, propertyName, aDeclaration)) { return PR_FALSE; } // See if the declaration is followed by a "!important" declaration PRBool isImportant = PR_FALSE; if (!GetToken(aErrorCode, PR_TRUE)) { if (aCheckForBraces) { // Premature eof is not ok when proper termination is mandated return PR_FALSE; } return PR_TRUE; } else { if (eCSSToken_Symbol == tk->mType) { if ('!' == tk->mSymbol) { // Look for important ident if (!GetToken(aErrorCode, PR_TRUE)) { // Premature eof is not ok return PR_FALSE; } if ((eCSSToken_Ident != tk->mType) || !tk->mIdent.EqualsIgnoreCase("important")) { UngetToken(); return PR_FALSE; } isImportant = PR_TRUE; } else { // Not a !important declaration UngetToken(); } } else { // Not a !important declaration UngetToken(); } } if (PR_TRUE == isImportant) { aDeclaration->SetValueImportant(propertyName); } // Make sure valid property declaration is terminated with either a // semicolon or a right-curly-brace (when aCheckForBraces is true). // When aCheckForBraces is false, proper termination is either // semicolon or EOF. if (!GetToken(aErrorCode, PR_TRUE)) { if (aCheckForBraces) { // Premature eof is not ok return PR_FALSE; } return PR_TRUE; } if (eCSSToken_Symbol == tk->mType) { if (';' == tk->mSymbol) { return PR_TRUE; } if (!aCheckForBraces) { // If we didn't hit eof and we didn't see a semicolon then the // declaration is not properly terminated. return PR_FALSE; } if ('}' == tk->mSymbol) { UngetToken(); return PR_TRUE; } } return PR_FALSE; } // Flags for ParseVariant method #define VARIANT_KEYWORD 0x0001 #define VARIANT_LENGTH 0x0002 #define VARIANT_PERCENT 0x0004 #define VARIANT_COLOR 0x0008 #define VARIANT_URL 0x0010 #define VARIANT_NUMBER 0x0020 #define VARIANT_INTEGER 0x0040 #define VARIANT_AUTO 0x0100 #define VARIANT_INHERIT 0x0200 #define VARIANT_NONE 0x0400 #define VARIANT_NORMAL 0x0800 // Common combinations of variants #define VARIANT_KL (VARIANT_KEYWORD | VARIANT_LENGTH) #define VARIANT_KLP (VARIANT_KEYWORD | VARIANT_LENGTH | VARIANT_PERCENT) #define VARIANT_KP (VARIANT_KEYWORD | VARIANT_PERCENT) #define VARIANT_AH (VARIANT_AUTO | VARIANT_INHERIT) #define VARIANT_AHLP (VARIANT_AH | VARIANT_LP) #define VARIANT_AHI (VARIANT_AH | VARIANT_INTEGER) #define VARIANT_AHK (VARIANT_AH | VARIANT_KEYWORD) #define VARIANT_AHL (VARIANT_AH | VARIANT_LENGTH) #define VARIANT_HK (VARIANT_INHERIT | VARIANT_KEYWORD) #define VARIANT_HL (VARIANT_INHERIT | VARIANT_LENGTH) #define VARIANT_HLP (VARIANT_HL | VARIANT_PERCENT) #define VARIANT_HLPN (VARIANT_HLP | VARIANT_NUMBER) #define VARIANT_HMK (VARIANT_INHERIT | VARIANT_NORMAL | VARIANT_KEYWORD) #define VARIANT_AL (VARIANT_AUTO | VARIANT_LENGTH) #define VARIANT_LP (VARIANT_LENGTH | VARIANT_PERCENT) #define VARIANT_CK (VARIANT_COLOR | VARIANT_KEYWORD) #define VARIANT_C VARIANT_COLOR #define VARIANT_UK (VARIANT_URL | VARIANT_KEYWORD) #define VARIANT_HPN (VARIANT_INHERIT | VARIANT_PERCENT | VARIANT_NUMBER) // Keyword id tables for variant/enum parsing static PRInt32 kBackgroundAttachmentKTable[] = { KEYWORD_FIXED, NS_STYLE_BG_ATTACHMENT_FIXED, KEYWORD_SCROLL, NS_STYLE_BG_ATTACHMENT_SCROLL, -1 }; static PRInt32 kBackgroundColorKTable[] = { KEYWORD_TRANSPARENT, NS_STYLE_BG_COLOR_TRANSPARENT, -1 }; static PRInt32 kBackgroundRepeatKTable[] = { KEYWORD_NO_REPEAT, NS_STYLE_BG_REPEAT_OFF, KEYWORD_REPEAT, NS_STYLE_BG_REPEAT_XY, KEYWORD_REPEAT_X, NS_STYLE_BG_REPEAT_X, KEYWORD_REPEAT_Y, NS_STYLE_BG_REPEAT_Y, -1 }; static PRInt32 kBorderStyleKTable[] = { KEYWORD_NONE, NS_STYLE_BORDER_STYLE_NONE, KEYWORD_DOTTED, NS_STYLE_BORDER_STYLE_DOTTED, KEYWORD_DASHED, NS_STYLE_BORDER_STYLE_DASHED, KEYWORD_SOLID, NS_STYLE_BORDER_STYLE_SOLID, KEYWORD_DOUBLE, NS_STYLE_BORDER_STYLE_DOUBLE, KEYWORD_GROOVE, NS_STYLE_BORDER_STYLE_GROOVE, KEYWORD_RIDGE, NS_STYLE_BORDER_STYLE_RIDGE, KEYWORD_INSET, NS_STYLE_BORDER_STYLE_INSET, KEYWORD_OUTSET, NS_STYLE_BORDER_STYLE_OUTSET, -1 }; static PRInt32 kBorderWidthKTable[] = { KEYWORD_THIN, NS_STYLE_BORDER_WIDTH_THIN, KEYWORD_MEDIUM, NS_STYLE_BORDER_WIDTH_MEDIUM, KEYWORD_THICK, NS_STYLE_BORDER_WIDTH_THICK, -1 }; static PRInt32 kClearKTable[] = { KEYWORD_NONE, NS_STYLE_CLEAR_NONE, KEYWORD_LEFT, NS_STYLE_CLEAR_LEFT, KEYWORD_RIGHT, NS_STYLE_CLEAR_RIGHT, KEYWORD_BOTH, NS_STYLE_CLEAR_LEFT_AND_RIGHT, -1 }; static PRInt32 kCursorKTable[] = { KEYWORD_IBEAM, NS_STYLE_CURSOR_IBEAM, KEYWORD_ARROW, NS_STYLE_CURSOR_DEFAULT, KEYWORD_HAND, NS_STYLE_CURSOR_HAND, -1 }; static PRInt32 kDirectionKTable[] = { KEYWORD_LTR, NS_STYLE_DIRECTION_LTR, KEYWORD_RTL, NS_STYLE_DIRECTION_RTL, KEYWORD_INHERIT, NS_STYLE_DIRECTION_INHERIT, -1 }; static PRInt32 kDisplayKTable[] = { KEYWORD_NONE, NS_STYLE_DISPLAY_NONE, KEYWORD_BLOCK, NS_STYLE_DISPLAY_BLOCK, KEYWORD_INLINE, NS_STYLE_DISPLAY_INLINE, KEYWORD_LIST_ITEM, NS_STYLE_DISPLAY_LIST_ITEM, KEYWORD_MARKER, NS_STYLE_DISPLAY_MARKER, KEYWORD_RUN_IN, NS_STYLE_DISPLAY_RUN_IN, KEYWORD_COMPACT, NS_STYLE_DISPLAY_COMPACT, KEYWORD_TABLE, NS_STYLE_DISPLAY_TABLE, KEYWORD_INLINE_TABLE, NS_STYLE_DISPLAY_INLINE_TABLE, KEYWORD_TABLE_ROW_GROUP, NS_STYLE_DISPLAY_TABLE_ROW_GROUP, KEYWORD_TABLE_COLUMN, NS_STYLE_DISPLAY_TABLE_COLUMN, KEYWORD_TABLE_COLUMN_GROUP, NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP, KEYWORD_TABLE_HEADER_GROUP, NS_STYLE_DISPLAY_TABLE_HEADER_GROUP, KEYWORD_TABLE_FOOTER_GROUP, NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP, KEYWORD_TABLE_ROW, NS_STYLE_DISPLAY_TABLE_ROW, KEYWORD_TABLE_CELL, NS_STYLE_DISPLAY_TABLE_CELL, KEYWORD_TABLE_CAPTION, NS_STYLE_DISPLAY_TABLE_CAPTION, -1 }; static PRInt32 kFloatKTable[] = { KEYWORD_NONE, NS_STYLE_FLOAT_NONE, KEYWORD_LEFT, NS_STYLE_FLOAT_LEFT, KEYWORD_RIGHT, NS_STYLE_FLOAT_RIGHT, -1 }; static PRInt32 kFontSizeKTable[] = { KEYWORD_XX_SMALL, NS_STYLE_FONT_SIZE_XXSMALL, KEYWORD_X_SMALL, NS_STYLE_FONT_SIZE_XSMALL, KEYWORD_SMALL, NS_STYLE_FONT_SIZE_SMALL, KEYWORD_MEDIUM, NS_STYLE_FONT_SIZE_MEDIUM, KEYWORD_LARGE, NS_STYLE_FONT_SIZE_LARGE, KEYWORD_X_LARGE, NS_STYLE_FONT_SIZE_XLARGE, KEYWORD_XX_LARGE, NS_STYLE_FONT_SIZE_XXLARGE, KEYWORD_LARGER, NS_STYLE_FONT_SIZE_LARGER, KEYWORD_SMALLER, NS_STYLE_FONT_SIZE_SMALLER, -1 }; static PRInt32 kFontStyleKTable[] = { KEYWORD_NORMAL, NS_STYLE_FONT_STYLE_NORMAL, KEYWORD_ITALIC, NS_STYLE_FONT_STYLE_ITALIC, KEYWORD_OBLIQUE, NS_STYLE_FONT_STYLE_OBLIQUE, -1 }; static PRInt32 kFontVariantKTable[] = { KEYWORD_NORMAL, NS_STYLE_FONT_VARIANT_NORMAL, KEYWORD_SMALL_CAPS, NS_STYLE_FONT_VARIANT_SMALL_CAPS, -1 }; static PRInt32 kListStyleImageKTable[] = { KEYWORD_NONE, NS_STYLE_LIST_STYLE_IMAGE_NONE, -1 }; static PRInt32 kListStylePositionKTable[] = { KEYWORD_INSIDE, NS_STYLE_LIST_STYLE_POSITION_INSIDE, KEYWORD_OUTSIDE, NS_STYLE_LIST_STYLE_POSITION_OUTSIDE, -1 }; static PRInt32 kListStyleKTable[] = { KEYWORD_NONE, NS_STYLE_LIST_STYLE_NONE, KEYWORD_DISC, NS_STYLE_LIST_STYLE_DISC, KEYWORD_CIRCLE, NS_STYLE_LIST_STYLE_CIRCLE, KEYWORD_SQUARE, NS_STYLE_LIST_STYLE_SQUARE, KEYWORD_DECIMAL, NS_STYLE_LIST_STYLE_DECIMAL, KEYWORD_LOWER_ROMAN, NS_STYLE_LIST_STYLE_LOWER_ROMAN, KEYWORD_UPPER_ROMAN, NS_STYLE_LIST_STYLE_UPPER_ROMAN, KEYWORD_LOWER_ALPHA, NS_STYLE_LIST_STYLE_LOWER_ALPHA, KEYWORD_UPPER_ALPHA, NS_STYLE_LIST_STYLE_UPPER_ALPHA, -1 }; static PRInt32 kMarginSizeKTable[] = { KEYWORD_AUTO, NS_STYLE_MARGIN_SIZE_AUTO, -1 }; static PRInt32 kOverflowKTable[] = { KEYWORD_VISIBLE, NS_STYLE_OVERFLOW_VISIBLE, KEYWORD_HIDDEN, NS_STYLE_OVERFLOW_HIDDEN, KEYWORD_SCROLL, NS_STYLE_OVERFLOW_SCROLL, KEYWORD_AUTO, NS_STYLE_OVERFLOW_AUTO, -1 }; static PRInt32 kPositionKTable[] = { KEYWORD_RELATIVE, NS_STYLE_POSITION_RELATIVE, KEYWORD_ABSOLUTE, NS_STYLE_POSITION_ABSOLUTE, KEYWORD_FIXED, NS_STYLE_POSITION_FIXED, -1 }; static PRInt32 kTextAlignKTable[] = { KEYWORD_LEFT, NS_STYLE_TEXT_ALIGN_LEFT, KEYWORD_RIGHT, NS_STYLE_TEXT_ALIGN_RIGHT, KEYWORD_CENTER, NS_STYLE_TEXT_ALIGN_CENTER, KEYWORD_JUSTIFY, NS_STYLE_TEXT_ALIGN_JUSTIFY, -1 }; static PRInt32 kTextTransformKTable[] = { KEYWORD_NONE, NS_STYLE_TEXT_TRANSFORM_NONE, KEYWORD_CAPITALIZE, NS_STYLE_TEXT_TRANSFORM_CAPITALIZE, KEYWORD_LOWERCASE, NS_STYLE_TEXT_TRANSFORM_LOWERCASE, KEYWORD_UPPERCASE, NS_STYLE_TEXT_TRANSFORM_UPPERCASE, -1 }; static PRInt32 kVerticalAlignKTable[] = { KEYWORD_BASELINE, NS_STYLE_VERTICAL_ALIGN_BASELINE, KEYWORD_SUB, NS_STYLE_VERTICAL_ALIGN_SUB, KEYWORD_SUPER, NS_STYLE_VERTICAL_ALIGN_SUPER, KEYWORD_TOP, NS_STYLE_VERTICAL_ALIGN_TOP, KEYWORD_TEXT_TOP, NS_STYLE_VERTICAL_ALIGN_TEXT_TOP, KEYWORD_MIDDLE, NS_STYLE_VERTICAL_ALIGN_MIDDLE, KEYWORD_BOTTOM, NS_STYLE_VERTICAL_ALIGN_BOTTOM, KEYWORD_TEXT_BOTTOM, NS_STYLE_VERTICAL_ALIGN_TEXT_BOTTOM, -1 }; static PRInt32 kVisibilityKTable[] = { KEYWORD_VISIBLE, NS_STYLE_VISIBILITY_VISIBLE, KEYWORD_HIDDEN, NS_STYLE_VISIBILITY_HIDDEN, -1 }; static PRInt32 kWhitespaceKTable[] = { KEYWORD_NORMAL, NS_STYLE_WHITESPACE_NORMAL, KEYWORD_PRE, NS_STYLE_WHITESPACE_PRE, KEYWORD_NOWRAP, NS_STYLE_WHITESPACE_NOWRAP, -1 }; static const char* kBorderTopNames[] = { "border-top-width", "border-top-style", "border-top-color", }; static const char* kBorderRightNames[] = { "border-right-width", "border-right-style", "border-right-color", }; static const char* kBorderBottomNames[] = { "border-bottom-width", "border-bottom-style", "border-bottom-color", }; static const char* kBorderLeftNames[] = { "border-left-width", "border-left-style", "border-left-color", }; PRInt32 CSSParserImpl::SearchKeywordTable(PRInt32 aID, PRInt32 aTable[]) { PRInt32 i = 0; for (;;) { if (aTable[i] < 0) { break; } if (aID == aTable[i]) { return i; } i += 2; } return -1; } PRBool CSSParserImpl::ParseEnum(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName, PRInt32* aTable) { nsString* ident = NextIdent(aErrorCode); if (nsnull == ident) { return PR_FALSE; } char cbuf[50]; ident->ToCString(cbuf, sizeof(cbuf)); PRInt32 id = nsCSSKeywords::LookupName(cbuf); if (id >= 0) { PRInt32 ix = SearchKeywordTable(id, aTable); if (ix >= 0) { aDeclaration->AppendValue(aName, nsCSSValue(aTable[ix+1], eCSSUnit_Enumerated)); return PR_TRUE; } } // Put the unknown identifier back and return UngetToken(); return PR_FALSE; } PRBool CSSParserImpl::TranslateLength(nsICSSDeclaration* aDeclaration, const char* aName, float aNumber, const nsString& aDimension) { nsCSSUnit units; if (0 != aDimension.Length()) { char cbuf[50]; aDimension.ToCString(cbuf, sizeof(cbuf)); PRInt32 id = nsCSSKeywords::LookupName(cbuf); switch (id) { case KEYWORD_EM: units = eCSSUnit_EM; break; case KEYWORD_EX: units = eCSSUnit_XHeight; break; case KEYWORD_PX: units = eCSSUnit_Pixel; break; case KEYWORD_IN: units = eCSSUnit_Inch; break; case KEYWORD_CM: units = eCSSUnit_Centimeter; break; case KEYWORD_MM: units = eCSSUnit_Millimeter; break; case KEYWORD_PT: units = eCSSUnit_Point; break; case KEYWORD_PC: units = eCSSUnit_Pica; break; default: // unknown dimension return PR_FALSE; } } else { // Must be a zero number... units = eCSSUnit_Point; } aDeclaration->AppendValue(aName, nsCSSValue(aNumber, units)); return PR_TRUE; } PRBool CSSParserImpl::ParseVariant(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName, PRInt32 aVariants, PRInt32* aTable) { nsCSSToken* tk = &mToken; if (!GetToken(aErrorCode, PR_TRUE)) { return PR_FALSE; } if (((aVariants & (VARIANT_AHK | VARIANT_NORMAL | VARIANT_NONE)) != 0) && (eCSSToken_Ident == tk->mType)) { char cbuf[50]; tk->mIdent.ToCString(cbuf, sizeof(cbuf)); PRInt32 sid = nsCSSKeywords::LookupName(cbuf); if (sid >= 0) { // known keyword if ((aVariants & VARIANT_AUTO) != 0) { if (sid == KEYWORD_AUTO) { aDeclaration->AppendValue(aName, nsCSSValue(eCSSUnit_Auto)); return PR_TRUE; } } if ((aVariants & VARIANT_INHERIT) != 0) { if (sid == KEYWORD_INHERIT) { aDeclaration->AppendValue(aName, nsCSSValue(eCSSUnit_Inherit)); return PR_TRUE; } } if ((aVariants & VARIANT_NONE) != 0) { if (sid == KEYWORD_NONE) { aDeclaration->AppendValue(aName, nsCSSValue(eCSSUnit_None)); return PR_TRUE; } } if ((aVariants & VARIANT_NORMAL) != 0) { if (sid == KEYWORD_NORMAL) { aDeclaration->AppendValue(aName, nsCSSValue(eCSSUnit_Normal)); return PR_TRUE; } } if ((aVariants & VARIANT_KEYWORD) != 0) { PRInt32 ix = SearchKeywordTable(sid, aTable); if (ix >= 0) { aDeclaration->AppendValue(aName, nsCSSValue(aTable[ix+1], eCSSUnit_Enumerated)); return PR_TRUE; } } } } if (((aVariants & VARIANT_LENGTH) != 0) && tk->isDimension()) { return TranslateLength(aDeclaration, aName, tk->mNumber, tk->mIdent); } if (((aVariants & VARIANT_PERCENT) != 0) && (eCSSToken_Percentage == tk->mType)) { aDeclaration->AppendValue(aName, nsCSSValue(tk->mNumber, eCSSUnit_Percent)); return PR_TRUE; } if (((aVariants & VARIANT_NUMBER) != 0) && (eCSSToken_Number == tk->mType)) { aDeclaration->AppendValue(aName, nsCSSValue(tk->mNumber, eCSSUnit_Number)); return PR_TRUE; } if (((aVariants & VARIANT_INTEGER) != 0) && (eCSSToken_Number == tk->mType) && tk->mIntegerValid) { aDeclaration->AppendValue(aName, nsCSSValue(tk->mInteger, eCSSUnit_Integer)); return PR_TRUE; } if (((aVariants & VARIANT_URL) != 0) && (eCSSToken_URL == tk->mType)) { // Translate url into an absolute url if the url is relative to // the style sheet. // XXX editors won't like this - too bad for now nsAutoString absURL; nsString baseURL; nsresult rv = NS_MakeAbsoluteURL(mURL, baseURL, tk->mIdent, absURL); if (NS_OK == rv) { aDeclaration->AppendValue(aName, nsCSSValue(absURL)); } else { aDeclaration->AppendValue(aName, nsCSSValue(tk->mIdent)); } return PR_TRUE; } if ((aVariants & VARIANT_COLOR) != 0) { if ((eCSSToken_ID == tk->mType) || (eCSSToken_Ident == tk->mType)) { // Put token back so that parse color can get it UngetToken(); nscolor rgba; // XXX This loses the original input format (e.g. a name which // should be preserved when editing) if (ParseColor(aErrorCode, &rgba)) { aDeclaration->AppendValue(aName, nsCSSValue(rgba)); return PR_TRUE; } return PR_FALSE; } } UngetToken(); return PR_FALSE; } PRInt32 CSSParserImpl::ParseChoice(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aNames[], PRInt32 aNumNames) { PRInt32 found = 0; for (int i = 0; i < aNumNames; i++) { // Try each property parser in order for (int j = 0; j < aNumNames; j++) { PRInt32 bit = 1 << j; if ((found & bit) == 0) { PRInt32 id = nsCSSProps::LookupName(aNames[j]); if (ParseProperty(aErrorCode, aNames[j], aDeclaration, id)) { found |= bit; } } } } return found; } /** * Parse a "box" property. Box properties have 1 to 4 values. When less * than 4 values are provided a standard mapping is used to replicate * existing values. Note that the replication requires renaming the * values. */ PRBool CSSParserImpl::ParseBoxProperties(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aNames[]) { // Get up to four values for the property PRInt32 count = 0; for (int i = 0; i < 4; i++) { PRInt32 id = nsCSSProps::LookupName(aNames[i]); if (!ParseProperty(aErrorCode, aNames[i], aDeclaration, id)) { break; } count++; } if (count == 0) { return PR_FALSE; } // Provide missing values by replicating some of the values found nsCSSValue value; switch (count) { case 1: // Make right == top aDeclaration->GetValue(aNames[0], value); aDeclaration->AppendValue(aNames[1], value); case 2: // Make bottom == top aDeclaration->GetValue(aNames[0], value); aDeclaration->AppendValue(aNames[2], value); case 3: // Make left == right aDeclaration->GetValue(aNames[1], value); aDeclaration->AppendValue(aNames[3], value); } return PR_TRUE; } PRBool CSSParserImpl::ParseProperty(PRInt32* aErrorCode, const char* aName, nsICSSDeclaration* aDeclaration) { PRInt32 id = nsCSSProps::LookupName(aName); if (id < 0) { return PR_FALSE; } // Strip out properties we use internally. These properties are used // by compound property parsing routines (e.g. "background-position"). switch (id) { case PROP_BACKGROUND_X_POSITION: case PROP_BACKGROUND_Y_POSITION: case PROP_BORDER_TOP_COLOR: case PROP_BORDER_RIGHT_COLOR: case PROP_BORDER_BOTTOM_COLOR: case PROP_BORDER_LEFT_COLOR: case PROP_BORDER_TOP_STYLE: case PROP_BORDER_RIGHT_STYLE: case PROP_BORDER_BOTTOM_STYLE: case PROP_BORDER_LEFT_STYLE: case PROP_CLIP_BOTTOM: case PROP_CLIP_LEFT: case PROP_CLIP_RIGHT: case PROP_CLIP_TOP: // The user can't use these return PR_FALSE; } return ParseProperty(aErrorCode, aName, aDeclaration, id); } PRBool CSSParserImpl::ParseProperty(PRInt32* aErrorCode, const char* aName, nsICSSDeclaration* aDeclaration, PRInt32 aID) { switch (aID) { case PROP_BACKGROUND: return ParseBackground(aErrorCode, aDeclaration); case PROP_BACKGROUND_ATTACHMENT: return ParseEnum(aErrorCode, aDeclaration, aName, kBackgroundAttachmentKTable); case PROP_BACKGROUND_COLOR: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_CK, kBackgroundColorKTable); case PROP_BACKGROUND_FILTER: return ParseBackgroundFilter(aErrorCode, aDeclaration, aName); case PROP_BACKGROUND_IMAGE: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_URL | VARIANT_NONE, nsnull); case PROP_BACKGROUND_POSITION: return ParseBackgroundPosition(aErrorCode, aDeclaration, aName); case PROP_BACKGROUND_REPEAT: return ParseEnum(aErrorCode, aDeclaration, aName, kBackgroundRepeatKTable); case PROP_BORDER: return ParseBorder(aErrorCode, aDeclaration); case PROP_BORDER_COLOR: return ParseBorderColor(aErrorCode, aDeclaration); case PROP_BORDER_STYLE: return ParseBorderStyle(aErrorCode, aDeclaration); case PROP_BORDER_BOTTOM: return ParseBorderSide(aErrorCode, aDeclaration, kBorderBottomNames, 0); case PROP_BORDER_LEFT: return ParseBorderSide(aErrorCode, aDeclaration, kBorderLeftNames, 1); case PROP_BORDER_RIGHT: return ParseBorderSide(aErrorCode, aDeclaration, kBorderRightNames, 2); case PROP_BORDER_TOP: return ParseBorderSide(aErrorCode, aDeclaration, kBorderTopNames, 3); case PROP_BORDER_BOTTOM_COLOR: case PROP_BORDER_LEFT_COLOR: case PROP_BORDER_RIGHT_COLOR: case PROP_BORDER_TOP_COLOR: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_C, nsnull); case PROP_BORDER_BOTTOM_STYLE: case PROP_BORDER_LEFT_STYLE: case PROP_BORDER_RIGHT_STYLE: case PROP_BORDER_TOP_STYLE: return ParseEnum(aErrorCode, aDeclaration, aName, kBorderStyleKTable); case PROP_BORDER_BOTTOM_WIDTH: case PROP_BORDER_LEFT_WIDTH: case PROP_BORDER_RIGHT_WIDTH: case PROP_BORDER_TOP_WIDTH: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_KL, kBorderWidthKTable); case PROP_BORDER_WIDTH: return ParseBorderWidth(aErrorCode, aDeclaration); case PROP_CLEAR: return ParseEnum(aErrorCode, aDeclaration, aName, kClearKTable); case PROP_CLIP: return ParseClip(aErrorCode, aDeclaration); case PROP_COLOR: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_COLOR, nsnull); case PROP_CURSOR: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_AHK, kCursorKTable); case PROP_DIRECTION: return ParseEnum(aErrorCode, aDeclaration, aName, kDirectionKTable); case PROP_DISPLAY: return ParseEnum(aErrorCode, aDeclaration, aName, kDisplayKTable); case PROP_FILTER: return ParseForegroundFilter(aErrorCode, aDeclaration, aName); case PROP_FLOAT: return ParseEnum(aErrorCode, aDeclaration, aName, kFloatKTable); case PROP_FONT: return ParseFont(aErrorCode, aDeclaration, aName); case PROP_FONT_FAMILY: return ParseFontFamily(aErrorCode, aDeclaration, aName); case PROP_FONT_SIZE: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_KLP, kFontSizeKTable); case PROP_FONT_STYLE: return ParseEnum(aErrorCode, aDeclaration, aName, kFontStyleKTable); case PROP_FONT_VARIANT: return ParseEnum(aErrorCode, aDeclaration, aName, kFontVariantKTable); case PROP_FONT_WEIGHT: return ParseFontWeight(aErrorCode, aDeclaration, aName); case PROP_HEIGHT: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_AHLP, nsnull); case PROP_LEFT: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_AHLP, nsnull); case PROP_LINE_HEIGHT: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_HLPN | VARIANT_NORMAL, nsnull); case PROP_LIST_STYLE: return ParseListStyle(aErrorCode, aDeclaration); case PROP_LIST_STYLE_IMAGE: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_UK, kListStyleImageKTable); case PROP_LIST_STYLE_POSITION: return ParseEnum(aErrorCode, aDeclaration, aName, kListStylePositionKTable); case PROP_LIST_STYLE_TYPE: return ParseEnum(aErrorCode, aDeclaration, aName, kListStyleKTable); case PROP_MARGIN: return ParseMargin(aErrorCode, aDeclaration); case PROP_MARGIN_BOTTOM: case PROP_MARGIN_LEFT: case PROP_MARGIN_RIGHT: case PROP_MARGIN_TOP: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_KLP, kMarginSizeKTable); case PROP_PADDING: return ParsePadding(aErrorCode, aDeclaration); case PROP_PADDING_BOTTOM: case PROP_PADDING_LEFT: case PROP_PADDING_RIGHT: case PROP_PADDING_TOP: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_LP, nsnull); case PROP_OPACITY: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_HPN, nsnull); case PROP_OVERFLOW: return ParseEnum(aErrorCode, aDeclaration, aName, kOverflowKTable); case PROP_POSITION: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_HMK, kPositionKTable); case PROP_TEXT_ALIGN: return ParseEnum(aErrorCode, aDeclaration, aName, kTextAlignKTable); case PROP_TEXT_DECORATION: return ParseTextDecoration(aErrorCode, aDeclaration, aName); case PROP_TEXT_INDENT: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_LP, nsnull); case PROP_TEXT_TRANSFORM: return ParseEnum(aErrorCode, aDeclaration, aName, kTextTransformKTable); case PROP_TOP: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_AHLP, nsnull); case PROP_VERTICAL_ALIGN: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_KP, kVerticalAlignKTable); case PROP_VISIBILITY: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_HK, kVisibilityKTable); case PROP_WHITE_SPACE: return ParseEnum(aErrorCode, aDeclaration, aName, kWhitespaceKTable); case PROP_WIDTH: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_AHLP, nsnull); case PROP_LETTER_SPACING: case PROP_WORD_SPACING: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_HL | VARIANT_NORMAL, nsnull); case PROP_Z_INDEX: return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_AHI, nsnull); } return PR_FALSE; } PRBool CSSParserImpl::ParseBackground(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration) { static const char* kBackgroundNames[] = { "background-color", "background-image", "background-repeat", "background-attachment", "background-position", "background-filter", }; PRInt32 found = ParseChoice(aErrorCode, aDeclaration, kBackgroundNames, 6); if (0 == found) { return PR_FALSE; } // Provide missing values if ((found & 1) == 0) { aDeclaration->AppendValue(kBackgroundNames[0], nsCSSValue(NS_STYLE_BG_COLOR_TRANSPARENT, eCSSUnit_Enumerated)); } if ((found & 2) == 0) { aDeclaration->AppendValue(kBackgroundNames[1], nsCSSValue(NS_STYLE_BG_IMAGE_NONE, eCSSUnit_Enumerated)); } if ((found & 4) == 0) { aDeclaration->AppendValue(kBackgroundNames[2], nsCSSValue(NS_STYLE_BG_REPEAT_XY, eCSSUnit_Enumerated)); } if ((found & 8) == 0) { aDeclaration->AppendValue(kBackgroundNames[3], nsCSSValue(NS_STYLE_BG_ATTACHMENT_SCROLL, eCSSUnit_Enumerated)); } if ((found & 16) == 0) { aDeclaration->AppendValue("background-x-position", nsCSSValue(0.0f, eCSSUnit_Percent)); aDeclaration->AppendValue("background-y-position", nsCSSValue(0.0f, eCSSUnit_Percent)); } // XXX Note: no default for filter (yet) return PR_TRUE; } // Bits used in determining which background position info we have #define BG_CENTER 0 #define BG_TOP 1 #define BG_BOTTOM 2 #define BG_LEFT 4 #define BG_RIGHT 8 #define BG_CENTER1 16 #define BG_CENTER2 32 PRBool CSSParserImpl::ParseBackgroundPosition(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName) { static PRInt32 kBackgroundPositionNames[] = { PROP_BACKGROUND_X_POSITION, PROP_BACKGROUND_Y_POSITION, }; // Note: Don't change this table unless you update // parseBackgroundPosition! static PRInt32 kBackgroundXYPositionKTable[] = { KEYWORD_CENTER, BG_CENTER, KEYWORD_TOP, BG_TOP, KEYWORD_BOTTOM, BG_BOTTOM, KEYWORD_LEFT, BG_LEFT, KEYWORD_RIGHT, BG_RIGHT, -1, }; const char* bxp = "background-x-position"; const char* byp = "background-y-position"; // First try a number or a length value if (ParseVariant(aErrorCode, aDeclaration, bxp, VARIANT_LP, nsnull)) { // We have one number/length. Get the optional second number/length. if (ParseVariant(aErrorCode, aDeclaration, byp, VARIANT_LP, nsnull)) { // We have two numbers return PR_TRUE; } // We have one number which is the x position. Create an value for // the vertical position which is of value 50% aDeclaration->AppendValue(byp, nsCSSValue(0.5f, eCSSUnit_Percent)); // XXX shouldn't this be CENTER enum instead? return PR_TRUE; } // Now try keywords. We do this manually to allow for the first // appearance of "center" to apply to the either the x or y // position (it's ambiguous so we have to disambiguate). Each // allowed keyword value is assigned it's own bit. We don't allow // any duplicate keywords other than center. We try to get two // keywords but it's okay if there is only one. PRInt32 mask = 0; PRInt32 centerBit = BG_CENTER1; for (PRInt32 i = 0; i < 2; i++) { nsString* ident = NextIdent(aErrorCode); if (nsnull == ident) { break; } char cbuf[50]; ident->ToCString(cbuf, sizeof(cbuf)); PRInt32 ix = SearchKeywordTable(nsCSSKeywords::LookupName(cbuf), kBackgroundXYPositionKTable); if (ix >= 0) { PRInt32 bit = kBackgroundXYPositionKTable[ix + 1]; if (bit == 0) { // Special hack for center bits: We can have two of them mask |= centerBit; centerBit <<= 1; continue; } else if ((mask & bit) != 0) { // no duplicate values allowed (other than center) return PR_FALSE; } mask |= bit; } else { UngetToken(); break; } } // Check for bad input. Bad input consists of no matching keywords, // or pairs of x keywords or pairs of y keywords. if ((mask == 0) || (mask == (BG_TOP | BG_BOTTOM)) || (mask == (BG_LEFT | BG_RIGHT))) { return PR_FALSE; } // Map good input int xValue = 50; if ((mask & (BG_LEFT | BG_RIGHT)) != 0) { // We have an x value xValue = ((mask & BG_LEFT) != 0) ? 0 : 100; } int yValue = 50; if ((mask & (BG_TOP | BG_BOTTOM)) != 0) { // We have a y value yValue = ((mask & BG_TOP) != 0) ? 0 : 100; } // Create style values aDeclaration->AppendValue(bxp, nsCSSValue(xValue, eCSSUnit_Enumerated)); aDeclaration->AppendValue(byp, nsCSSValue(yValue, eCSSUnit_Enumerated)); return PR_TRUE; } PRBool CSSParserImpl::ParseBackgroundFilter(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName) { // XXX not yet supported return PR_FALSE; } PRBool CSSParserImpl::ParseForegroundFilter(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName) { // XXX not yet supported return PR_FALSE; } // These must be in alphabetical order for aWhich based indexing to work static const char* kBorderStyleNames[] = { "border-bottom-style", "border-left-style", "border-right-style", "border-top-style", }; static const char* kBorderWidthNames[] = { "border-bottom-width", "border-left-width", "border-right-width", "border-top-width", }; PRBool CSSParserImpl::ParseBorder(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration) { static const char* kBorderNames[] = { "border-width", "border-style", "border-color" }; PRInt32 found = ParseChoice(aErrorCode, aDeclaration, kBorderNames, 3); if (0 == found) { return PR_FALSE; } if (0 == (found & 1)) { // provide missing border width's for (int i = 0; i < 4; i++) { aDeclaration->AppendValue(kBorderWidthNames[i], nsCSSValue(NS_STYLE_BORDER_WIDTH_MEDIUM, eCSSUnit_Enumerated)); } } if (0 == (found & 2)) { // provide missing border style's for (int i = 0; i < 4; i++) { aDeclaration->AppendValue(kBorderStyleNames[i], nsCSSValue(NS_STYLE_BORDER_STYLE_NONE, eCSSUnit_Enumerated)); } } // Do NOT provide a missing color value as the default is to be // the color of the element itself which must be determined later. return PR_TRUE; } PRBool CSSParserImpl::ParseBorderColor(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration) { static const char* kBoxBorderColorNames[] = { "border-top-color", "border-right-color", "border-bottom-color", "border-left-color", }; return ParseBoxProperties(aErrorCode, aDeclaration, kBoxBorderColorNames); } PRBool CSSParserImpl::ParseBorderSide(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aNames[], PRInt32 aWhich) { PRInt32 found = ParseChoice(aErrorCode, aDeclaration, aNames, 3); if (found == 0) return PR_FALSE; if ((found & 1) == 0) { // Provide default border-width aDeclaration->AppendValue(kBorderWidthNames[aWhich], nsCSSValue(NS_STYLE_BORDER_WIDTH_MEDIUM, eCSSUnit_Enumerated)); } if ((found & 2) == 0) { // Provide default border-style aDeclaration->AppendValue(kBorderStyleNames[aWhich], nsCSSValue(NS_STYLE_BORDER_STYLE_NONE, eCSSUnit_Enumerated)); } // Do NOT provide a missing color value as the default is to be // the color of the element itself which must be determined later. return PR_TRUE; } PRBool CSSParserImpl::ParseBorderStyle(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration) { // in top, right, bottom, left order static const char* kBoxBorderStyleNames[] = { "border-top-style", "border-right-style", "border-bottom-style", "border-left-style", }; return ParseBoxProperties(aErrorCode, aDeclaration, kBoxBorderStyleNames); } PRBool CSSParserImpl::ParseBorderWidth(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration) { static const char* kBoxBorderWidthNames[] = { "border-top-width", "border-right-width", "border-bottom-width", "border-left-width", }; return ParseBoxProperties(aErrorCode, aDeclaration, kBoxBorderWidthNames); } PRBool CSSParserImpl::ParseClip(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration) { static const char* kClipNames[] = { "clip-top", "clip-right", "clip-bottom", "clip-left", }; nsString* ident = NextIdent(aErrorCode); if (nsnull == ident) { return PR_FALSE; } if (ident->EqualsIgnoreCase("auto")) { for (int i = 0; i < 4; i++) { aDeclaration->AppendValue(kClipNames[i], nsCSSValue(eCSSUnit_Auto)); } return PR_TRUE; } else if (ident->EqualsIgnoreCase("inherit")) { for (int i = 0; i < 4; i++) { aDeclaration->AppendValue(kClipNames[i], nsCSSValue(eCSSUnit_Inherit)); } return PR_TRUE; } else if (ident->EqualsIgnoreCase("rect")) { if (!ExpectSymbol(aErrorCode, '(', PR_TRUE)) { return PR_FALSE; } for (int i = 0; i < 4; i++) { if (!ParseVariant(aErrorCode, aDeclaration, kClipNames[i], VARIANT_AL, nsnull)) { return PR_FALSE; } if (3 != i) { // skip optional commas between elements ExpectSymbol(aErrorCode, ',', PR_TRUE); } } if (!ExpectSymbol(aErrorCode, ')', PR_TRUE)) { return PR_FALSE; } return PR_TRUE; } else { UngetToken(); } return PR_FALSE; } PRBool CSSParserImpl::ParseFont(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName) { static const char* fontNames[] = { "font-style", "font-variant", "font-weight", }; // Get optional font-style, font-variant and font-weight (in any order) PRInt32 found = ParseChoice(aErrorCode, aDeclaration, fontNames, 3); if ((found & 1) == 0) { // Provide default font-style aDeclaration->AppendValue(fontNames[0], nsCSSValue(NS_STYLE_FONT_STYLE_NORMAL, eCSSUnit_Enumerated)); } if ((found & 2) == 0) { // Provide default font-variant aDeclaration->AppendValue(fontNames[1], nsCSSValue(NS_STYLE_FONT_VARIANT_NORMAL, eCSSUnit_Enumerated)); } if ((found & 4) == 0) { // Provide default font-weight aDeclaration->AppendValue(fontNames[2], nsCSSValue(NS_STYLE_FONT_WEIGHT_NORMAL, eCSSUnit_Enumerated)); } // Get mandatory font-size if (!ParseVariant(aErrorCode, aDeclaration, "font-size", VARIANT_KLP, kFontSizeKTable)) { return PR_FALSE; } // Get optional "/" line-height if (ExpectSymbol(aErrorCode, '/', PR_TRUE)) { if (!ParseVariant(aErrorCode, aDeclaration, "line-height", VARIANT_HLPN | VARIANT_NORMAL, nsnull)) { return PR_FALSE; } } // Get final mandatory font-family return ParseFontFamily(aErrorCode, aDeclaration, "font-family"); } PRBool CSSParserImpl::ParseFontFamily(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName) { nsCSSToken* tk = &mToken; nsAutoString family; PRBool firstOne = PR_TRUE; for (;;) { if (!GetToken(aErrorCode, PR_TRUE)) { break; } if (eCSSToken_Ident == tk->mType) { if (!firstOne) { family.Append(PRUnichar(',')); } family.Append(PRUnichar('"')); family.Append(tk->mIdent); for (;;) { if (!GetToken(aErrorCode, PR_FALSE)) { break; } if (eCSSToken_Ident == tk->mType) { family.Append(tk->mIdent); } else if (eCSSToken_WhiteSpace == tk->mType) { // Lookahead one token and drop whitespace if we ending the // font name. if (!GetToken(aErrorCode, PR_TRUE)) { break; } if (eCSSToken_Ident != tk->mType) { UngetToken(); break; } UngetToken(); family.Append(PRUnichar(' ')); } else { UngetToken(); break; } } family.Append(PRUnichar('"')); firstOne = PR_FALSE; } else if (eCSSToken_String == tk->mType) { if (!firstOne) { family.Append(PRUnichar(',')); } family.Append(PRUnichar('"')); family.Append(tk->mIdent); family.Append(PRUnichar('"')); firstOne = PR_FALSE; } else if (eCSSToken_Symbol == tk->mType) { if (',' != tk->mSymbol) { UngetToken(); break; } } else { UngetToken(); break; } } if (family.Length() == 0) { return PR_FALSE; } aDeclaration->AppendValue(aName, nsCSSValue(family)); return PR_TRUE; } PRBool CSSParserImpl::ParseFontWeight(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName) { static PRInt32 kFontWeightKTable[] = { KEYWORD_NORMAL, NS_STYLE_FONT_WEIGHT_NORMAL, KEYWORD_BOLD, NS_STYLE_FONT_WEIGHT_BOLD, KEYWORD_BOLDER, NS_STYLE_FONT_WEIGHT_BOLDER, KEYWORD_LIGHTER, NS_STYLE_FONT_WEIGHT_LIGHTER, -1, }; nsCSSToken* tk = &mToken; if (!GetToken(aErrorCode, PR_TRUE)) { return PR_FALSE; } if (eCSSToken_Ident == tk->mType) { char cbuf[50]; tk->mIdent.ToCString(cbuf, sizeof(cbuf)); PRInt32 kid = nsCSSKeywords::LookupName(cbuf); PRInt32 ix = SearchKeywordTable(kid, kFontWeightKTable); if (ix < 0) { UngetToken(); return PR_FALSE; } aDeclaration->AppendValue(aName, nsCSSValue(kFontWeightKTable[ix+1], eCSSUnit_Enumerated)); } else if (eCSSToken_Number == tk->mType) { PRInt32 v = (PRInt32) tk->mNumber; if (v < 100) v = 100; else if (v > 900) v = 900; v = v - (v % 100); aDeclaration->AppendValue(aName, nsCSSValue(v, eCSSUnit_Integer)); } else { UngetToken(); return PR_FALSE; } return PR_TRUE; } PRBool CSSParserImpl::ParseListStyle(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration) { const char* lst = "list-style-type"; const char* lsp = "list-style-position"; const char* lsi = "list-style-image"; int found = 0; for (int i = 0; i < 3; i++) { if (((found & 1) == 0) && ParseEnum(aErrorCode, aDeclaration, lst, kListStyleKTable)) { found |= 1; continue; } if (((found & 2) == 0) && ParseEnum(aErrorCode, aDeclaration, lsp, kListStylePositionKTable)) { found |= 2; continue; } if ((found & 4) == 0) { if (!GetToken(aErrorCode, PR_TRUE)) { break; } if (eCSSToken_URL == mToken.mType) { aDeclaration->AppendValue(lsi, nsCSSValue(mToken.mIdent)); found |= 4; continue; } else { if (eCSSToken_Symbol == mToken.mType) { PRUnichar symbol = mToken.mSymbol; if ((';' == symbol) || ('}' == symbol)) { UngetToken(); break; } } // We got something strange. That's an error. UngetToken(); return PR_FALSE; } } } if (found == 0) { return PR_FALSE; } // Provide default values if ((found & 1) == 0) { aDeclaration->AppendValue(lst, nsCSSValue(NS_STYLE_LIST_STYLE_DISC, eCSSUnit_Enumerated)); } if ((found & 2) == 0) { aDeclaration->AppendValue(lsp, nsCSSValue(NS_STYLE_LIST_STYLE_POSITION_OUTSIDE, eCSSUnit_Enumerated)); } if ((found & 4) == 0) { aDeclaration->AppendValue(lsi, nsCSSValue(NS_STYLE_LIST_STYLE_IMAGE_NONE, eCSSUnit_Enumerated)); } return PR_TRUE; } PRBool CSSParserImpl::ParseMargin(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration) { static const char* kBoxMarginSideNames[] = { "margin-top", "margin-right", "margin-bottom", "margin-left", }; return ParseBoxProperties(aErrorCode, aDeclaration, kBoxMarginSideNames); } PRBool CSSParserImpl::ParsePadding(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration) { static const char* kBoxPaddingSideNames[] = { "padding-top", "padding-right", "padding-bottom", "padding-left", }; return ParseBoxProperties(aErrorCode, aDeclaration, kBoxPaddingSideNames); } PRBool CSSParserImpl::ParseTextDecoration(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration, const char* aName) { static PRInt32 kTextDecorationNoneKTable[] = { KEYWORD_NONE, NS_STYLE_TEXT_DECORATION_NONE, -1 }; static PRInt32 kTextDecorationKTable[] = { KEYWORD_UNDERLINE, NS_STYLE_TEXT_DECORATION_UNDERLINE, KEYWORD_OVERLINE, NS_STYLE_TEXT_DECORATION_OVERLINE, KEYWORD_LINE_THROUGH, NS_STYLE_TEXT_DECORATION_LINE_THROUGH, KEYWORD_BLINK, NS_STYLE_TEXT_DECORATION_BLINK, -1, }; if (ParseEnum(aErrorCode, aDeclaration, aName, kTextDecorationNoneKTable)) { return PR_TRUE; } PRInt32 decoration = 0; for (int i = 0; i < 4; i++) { nsString* ident = NextIdent(aErrorCode); if (nsnull == ident) { break; } char cbuf[50]; ident->ToCString(cbuf, sizeof(cbuf)); PRInt32 id = nsCSSKeywords::LookupName(cbuf); PRInt32 ix = SearchKeywordTable(id, kTextDecorationKTable); if (ix < 0) { UngetToken(); break; } decoration |= kTextDecorationKTable[ix+1]; } if (0 == decoration) { return PR_FALSE; } aDeclaration->AppendValue(aName, nsCSSValue(decoration, eCSSUnit_Integer)); return PR_TRUE; }