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tdelibs/khtml/css/cssparser.cpp

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/*
* This file is part of the DOM implementation for KDE.
*
* Copyright (C) 2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
* Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
// #define CSS_DEBUG
// #define TOKEN_DEBUG
#define YYDEBUG 0
#include <kdebug.h>
#include <kglobal.h>
#include <kurl.h>
#include "cssparser.h"
#include "css_valueimpl.h"
#include "css_ruleimpl.h"
#include "css_stylesheetimpl.h"
#include "cssproperties.h"
#include "cssvalues.h"
#include "misc/helper.h"
#include "csshelper.h"
using namespace DOM;
#include <stdlib.h>
#include <assert.h>
// used to promote background: left to left center
#define BACKGROUND_SKIP_CENTER( num ) \
if ( !pos_ok[ num ] && expected != 1 ) { \
pos_ok[num] = true; \
pos[num] = 0; \
skip_next = false; \
}
ValueList::~ValueList()
{
unsigned numValues = m_values.size();
for (unsigned i = 0; i < numValues; i++)
if (m_values[i].unit == Value::Function)
delete m_values[i].function;
}
namespace {
class ShorthandScope {
public:
ShorthandScope(CSSParser* parser, int propId) : m_parser(parser)
{
if (!(m_parser->m_inParseShorthand++))
m_parser->m_currentShorthand = propId;
}
~ShorthandScope()
{
if (!(--m_parser->m_inParseShorthand))
m_parser->m_currentShorthand = 0;
}
private:
CSSParser* m_parser;
};
}
using namespace DOM;
#if YYDEBUG > 0
extern int cssyydebug;
#endif
extern int cssyyparse( void * parser );
CSSParser *CSSParser::currentParser = 0;
CSSParser::CSSParser( bool strictParsing )
{
#ifdef CSS_DEBUG
kdDebug( 6080 ) << "CSSParser::CSSParser this=" << this << endl;
#endif
strict = strictParsing;
parsedProperties = (CSSProperty **) malloc( 32 * sizeof( CSSProperty * ) );
numParsedProperties = 0;
maxParsedProperties = 32;
data = 0;
valueList = 0;
rule = 0;
id = 0;
important = false;
nonCSSHint = false;
m_inParseShorthand = 0;
m_currentShorthand = 0;
m_implicitShorthand = false;
yy_start = 1;
#if YYDEBUG > 0
cssyydebug = 1;
#endif
}
CSSParser::~CSSParser()
{
if ( numParsedProperties )
clearProperties();
free( parsedProperties );
delete valueList;
#ifdef CSS_DEBUG
kdDebug( 6080 ) << "CSSParser::~CSSParser this=" << this << endl;
#endif
free( data );
}
unsigned int CSSParser::defaultNamespace()
{
if (styleElement && styleElement->isCSSStyleSheet())
return static_cast<CSSStyleSheetImpl*>(styleElement)->defaultNamespace();
else
return anyNamespace;
}
void CSSParser::runParser(int length)
{
data[length-1] = 0;
data[length-2] = 0;
data[length-3] = ' ';
yyTok = -1;
block_nesting = 0;
yy_hold_char = 0;
yyleng = 0;
yytext = yy_c_buf_p = data;
yy_hold_char = *yy_c_buf_p;
CSSParser *old = currentParser;
currentParser = this;
cssyyparse( this );
currentParser = old;
}
void CSSParser::parseSheet( CSSStyleSheetImpl *sheet, const DOMString &string )
{
styleElement = sheet;
int length = string.length() + 3;
data = (unsigned short *)malloc( length *sizeof( unsigned short ) );
memcpy( data, string.unicode(), string.length()*sizeof( unsigned short) );
#ifdef CSS_DEBUG
kdDebug( 6080 ) << ">>>>>>> start parsing style sheet" << endl;
#endif
runParser(length);
#ifdef CSS_DEBUG
kdDebug( 6080 ) << "<<<<<<< done parsing style sheet" << endl;
#endif
delete rule;
rule = 0;
}
CSSRuleImpl *CSSParser::parseRule( DOM::CSSStyleSheetImpl *sheet, const DOM::DOMString &string )
{
styleElement = sheet;
const char khtml_rule[] = "@-khtml-rule{";
int length = string.length() + 4 + strlen(khtml_rule);
assert( !data );
data = (unsigned short *)malloc( length *sizeof( unsigned short ) );
for ( unsigned int i = 0; i < strlen(khtml_rule); i++ )
data[i] = khtml_rule[i];
memcpy( data + strlen( khtml_rule ), string.unicode(), string.length()*sizeof( unsigned short) );
// qDebug("parse string = '%s'", TQConstString( (const TQChar *)data, length ).string().latin1() );
data[length-4] = '}';
runParser(length);
CSSRuleImpl *result = rule;
rule = 0;
return result;
}
bool CSSParser::parseValue( DOM::CSSStyleDeclarationImpl *declaration, int _id, const DOM::DOMString &string,
bool _important, bool _nonCSSHint )
{
#ifdef CSS_DEBUG
kdDebug( 6080 ) << "CSSParser::parseValue: id=" << _id << " important=" << _important
<< " nonCSSHint=" << _nonCSSHint << " value='" << string.string() << "'" << endl;
#endif
styleElement = declaration->stylesheet();
const char khtml_value[] = "@-khtml-value{";
int length = string.length() + 4 + strlen(khtml_value);
assert( !data );
data = (unsigned short *)malloc( length *sizeof( unsigned short ) );
for ( unsigned int i = 0; i < strlen(khtml_value); i++ )
data[i] = khtml_value[i];
memcpy( data + strlen( khtml_value ), string.unicode(), string.length()*sizeof( unsigned short) );
data[length-4] = '}';
// qDebug("parse string = '%s'", TQConstString( (const TQChar *)data, length ).string().latin1() );
id = _id;
important = _important;
nonCSSHint = _nonCSSHint;
runParser(length);
delete rule;
rule = 0;
bool ok = false;
if ( numParsedProperties ) {
ok = true;
for ( int i = 0; i < numParsedProperties; i++ ) {
declaration->removeProperty(parsedProperties[i]->m_id, nonCSSHint);
declaration->values()->append( parsedProperties[i] );
}
numParsedProperties = 0;
}
return ok;
}
bool CSSParser::parseDeclaration( DOM::CSSStyleDeclarationImpl *declaration, const DOM::DOMString &string,
bool _nonCSSHint )
{
#ifdef CSS_DEBUG
kdDebug( 6080 ) << "CSSParser::parseDeclaration: nonCSSHint=" << nonCSSHint
<< " value='" << string.string() << "'" << endl;
#endif
styleElement = declaration->stylesheet();
const char khtml_decls[] = "@-khtml-decls{";
int length = string.length() + 4 + strlen(khtml_decls);
assert( !data );
data = (unsigned short *)malloc( length *sizeof( unsigned short ) );
for ( unsigned int i = 0; i < strlen(khtml_decls); i++ )
data[i] = khtml_decls[i];
memcpy( data + strlen( khtml_decls ), string.unicode(), string.length()*sizeof( unsigned short) );
data[length-4] = '}';
nonCSSHint = _nonCSSHint;
runParser(length);
delete rule;
rule = 0;
bool ok = false;
if ( numParsedProperties ) {
ok = true;
for ( int i = 0; i < numParsedProperties; i++ ) {
declaration->removeProperty(parsedProperties[i]->m_id, false);
declaration->values()->append( parsedProperties[i] );
}
numParsedProperties = 0;
}
return ok;
}
void CSSParser::addProperty( int propId, CSSValueImpl *value, bool important )
{
CSSProperty *prop = new CSSProperty;
prop->m_id = propId;
prop->setValue( value );
prop->m_important = important;
prop->nonCSSHint = nonCSSHint;
if ( numParsedProperties >= maxParsedProperties ) {
maxParsedProperties += 32;
parsedProperties = (CSSProperty **) realloc( parsedProperties,
maxParsedProperties*sizeof( CSSProperty * ) );
}
parsedProperties[numParsedProperties++] = prop;
}
CSSStyleDeclarationImpl *CSSParser::createStyleDeclaration( CSSStyleRuleImpl *rule )
{
TQPtrList<CSSProperty> *propList = new TQPtrList<CSSProperty>;
propList->setAutoDelete( true );
for ( int i = 0; i < numParsedProperties; i++ )
propList->append( parsedProperties[i] );
numParsedProperties = 0;
return new CSSStyleDeclarationImpl(rule, propList);
}
void CSSParser::clearProperties()
{
for ( int i = 0; i < numParsedProperties; i++ )
delete parsedProperties[i];
numParsedProperties = 0;
}
DOM::DocumentImpl *CSSParser::document() const
{
const StyleBaseImpl* root = styleElement;
DocumentImpl *doc = 0;
while (root->parent())
root = root->parent();
if (root->isCSSStyleSheet())
doc = static_cast<const CSSStyleSheetImpl*>(root)->doc();
return doc;
}
// defines units allowed for a certain property, used in parseUnit
enum Units
{
FUnknown = 0x0000,
FInteger = 0x0001,
FNumber = 0x0002, // Real Numbers
FPercent = 0x0004,
FLength = 0x0008,
FAngle = 0x0010,
FTime = 0x0020,
FFrequency = 0x0040,
FRelative = 0x0100,
FNonNeg = 0x0200
};
static bool validUnit( Value *value, int unitflags, bool strict )
{
if ( unitflags & FNonNeg && value->fValue < 0 )
return false;
bool b = false;
switch( value->unit ) {
case CSSPrimitiveValue::CSS_NUMBER:
b = (unitflags & FNumber);
if ( !b && ( (unitflags & FLength) && (value->fValue == 0 || !strict ) ) ) {
value->unit = CSSPrimitiveValue::CSS_PX;
b = true;
}
if (!b && (unitflags & FInteger) && value->isInt)
b = true;
break;
case CSSPrimitiveValue::CSS_PERCENTAGE:
b = (unitflags & FPercent);
break;
case Value::Q_EMS:
case CSSPrimitiveValue::CSS_EMS:
case CSSPrimitiveValue::CSS_EXS:
case CSSPrimitiveValue::CSS_PX:
case CSSPrimitiveValue::CSS_CM:
case CSSPrimitiveValue::CSS_MM:
case CSSPrimitiveValue::CSS_IN:
case CSSPrimitiveValue::CSS_PT:
case CSSPrimitiveValue::CSS_PC:
b = (unitflags & FLength);
break;
case CSSPrimitiveValue::CSS_MS:
case CSSPrimitiveValue::CSS_S:
b = (unitflags & FTime);
break;
case CSSPrimitiveValue::CSS_DEG:
case CSSPrimitiveValue::CSS_RAD:
case CSSPrimitiveValue::CSS_GRAD:
case CSSPrimitiveValue::CSS_HZ:
case CSSPrimitiveValue::CSS_KHZ:
case CSSPrimitiveValue::CSS_DIMENSION:
default:
break;
}
return b;
}
bool CSSParser::parseValue( int propId, bool important )
{
if ( !valueList ) return false;
Value *value = valueList->current();
if ( !value )
return false;
int id = value->id;
int num = inShorthand() ? 1 : valueList->size();
if ( id == CSS_VAL_INHERIT ) {
if (num != 1)
return false;
addProperty( propId, new CSSInheritedValueImpl(), important );
return true;
} else if (id == CSS_VAL_INITIAL ) {
if (num != 1)
return false;
addProperty(propId, new CSSInitialValueImpl(), important);
return true;
}
bool valid_primitive = false;
CSSValueImpl *parsedValue = 0;
switch(propId) {
/* The comment to the left defines all valid value of this properties as defined
* in CSS 2, Appendix F. Property index
*/
/* All the CSS properties are not supported by the renderer at the moment.
* Note that all the CSS2 Aural properties are only checked, if CSS_AURAL is defined
* (see parseAuralValues). As we don't support them at all this seems reasonable.
*/
case CSS_PROP_SIZE: // <length>{1,2} | auto | portrait | landscape | inherit
// case CSS_PROP_PAGE: // <identifier> | auto // ### CHECK
// ### To be done
if (id)
valid_primitive = true;
break;
case CSS_PROP_UNICODE_BIDI: // normal | embed | bidi-override | inherit
if ( id == CSS_VAL_NORMAL ||
id == CSS_VAL_EMBED ||
id == CSS_VAL_BIDI_OVERRIDE )
valid_primitive = true;
break;
case CSS_PROP_POSITION: // static | relative | absolute | fixed | inherit
if ( id == CSS_VAL_STATIC ||
id == CSS_VAL_RELATIVE ||
id == CSS_VAL_ABSOLUTE ||
id == CSS_VAL_FIXED )
valid_primitive = true;
break;
case CSS_PROP_PAGE_BREAK_AFTER: // auto | always | avoid | left | right | inherit
case CSS_PROP_PAGE_BREAK_BEFORE: // auto | always | avoid | left | right | inherit
if ( id == CSS_VAL_AUTO ||
id == CSS_VAL_ALWAYS ||
id == CSS_VAL_AVOID ||
id == CSS_VAL_LEFT ||
id == CSS_VAL_RIGHT )
valid_primitive = true;
break;
case CSS_PROP_PAGE_BREAK_INSIDE: // avoid | auto | inherit
if ( id == CSS_VAL_AUTO ||
id == CSS_VAL_AVOID )
valid_primitive = true;
break;
case CSS_PROP_EMPTY_CELLS: // show | hide | inherit
if ( id == CSS_VAL_SHOW ||
id == CSS_VAL_HIDE )
valid_primitive = true;
break;
case CSS_PROP_QUOTES: // [<string> <string>]+ | none | inherit
if (id == CSS_VAL_NONE) {
valid_primitive = true;
} else {
QuotesValueImpl *quotes = new QuotesValueImpl;
bool is_valid = true;
TQString open, close;
Value *val=valueList->current();
while (val) {
if (val->unit == CSSPrimitiveValue::CSS_STRING)
open = qString(val->string);
else {
is_valid = false;
break;
}
valueList->next();
val=valueList->current();
if (val && val->unit == CSSPrimitiveValue::CSS_STRING)
close = qString(val->string);
else {
is_valid = false;
break;
}
quotes->addLevel(open, close);
valueList->next();
val=valueList->current();
}
if (is_valid)
parsedValue = quotes;
else
delete quotes;
}
break;
case CSS_PROP_CONTENT: // normal | none | inherit |
// [ <string> | <uri> | <counter> | attr(X) | open-quote | close-quote | no-open-quote | no-close-quote ]+
if ( id == CSS_VAL_NORMAL || id == CSS_VAL_NONE)
valid_primitive = true;
else
return parseContent( propId, important );
break;
case CSS_PROP_WHITE_SPACE: // normal | pre | nowrap | pre-wrap | pre-line | inherit
if ( id == CSS_VAL_NORMAL ||
id == CSS_VAL_PRE ||
id == CSS_VAL_PRE_WRAP ||
id == CSS_VAL_PRE_LINE ||
id == CSS_VAL_NOWRAP )
valid_primitive = true;
break;
case CSS_PROP_CLIP: // <shape> | auto | inherit
if ( id == CSS_VAL_AUTO )
valid_primitive = true;
else if ( value->unit == Value::Function )
return parseShape( propId, important );
break;
/* Start of supported CSS properties with validation. This is needed for parseShortHand to work
* correctly and allows optimization in khtml::applyRule(..)
*/
case CSS_PROP_CAPTION_SIDE: // top | bottom | left | right | inherit
// Left and right were deprecated in CSS 2.1 and never supported by KHTML
if ( /* id == CSS_VAL_LEFT || id == CSS_VAL_RIGHT || */
id == CSS_VAL_TOP || id == CSS_VAL_BOTTOM)
valid_primitive = true;
break;
case CSS_PROP_BORDER_COLLAPSE: // collapse | separate | inherit
if ( id == CSS_VAL_COLLAPSE || id == CSS_VAL_SEPARATE )
valid_primitive = true;
break;
case CSS_PROP_VISIBILITY: // visible | hidden | collapse | inherit
if (id == CSS_VAL_VISIBLE || id == CSS_VAL_HIDDEN || id == CSS_VAL_COLLAPSE)
valid_primitive = true;
break;
case CSS_PROP_OVERFLOW: // visible | hidden | scroll | auto | marquee | inherit
case CSS_PROP_OVERFLOW_X:
case CSS_PROP_OVERFLOW_Y:
if (id == CSS_VAL_VISIBLE || id == CSS_VAL_HIDDEN || id == CSS_VAL_SCROLL || id == CSS_VAL_AUTO ||
id == CSS_VAL_MARQUEE)
valid_primitive = true;
break;
case CSS_PROP_LIST_STYLE_POSITION: // inside | outside | inherit
if ( id == CSS_VAL_INSIDE || id == CSS_VAL_OUTSIDE )
valid_primitive = true;
break;
case CSS_PROP_LIST_STYLE_TYPE:
// disc | circle | square | decimal | decimal-leading-zero | lower-roman |
// upper-roman | lower-greek | lower-alpha | lower-latin | upper-alpha |
// upper-latin | hebrew | armenian | georgian | cjk-ideographic | hiragana |
// katakana | hiragana-iroha | katakana-iroha | none | inherit
if ((id >= CSS_VAL_DISC && id <= CSS_VAL__KHTML_CLOSE_QUOTE) || id == CSS_VAL_NONE)
valid_primitive = true;
break;
case CSS_PROP_DISPLAY:
// inline | block | list-item | run-in | inline-block | -khtml-ruler | table |
// inline-table | table-row-group | table-header-group | table-footer-group | table-row |
// table-column-group | table-column | table-cell | table-caption | none | inherit
if ((id >= CSS_VAL_INLINE && id <= CSS_VAL_TABLE_CAPTION) || id == CSS_VAL_NONE)
valid_primitive = true;
break;
case CSS_PROP_DIRECTION: // ltr | rtl | inherit
if ( id == CSS_VAL_LTR || id == CSS_VAL_RTL )
valid_primitive = true;
break;
case CSS_PROP_TEXT_TRANSFORM: // capitalize | uppercase | lowercase | none | inherit
if ((id >= CSS_VAL_CAPITALIZE && id <= CSS_VAL_LOWERCASE) || id == CSS_VAL_NONE)
valid_primitive = true;
break;
case CSS_PROP_FLOAT: // left | right | none | khtml_left | khtml_right | inherit + center for buggy CSS
if ( id == CSS_VAL_LEFT || id == CSS_VAL_RIGHT || id == CSS_VAL__KHTML_LEFT ||
id == CSS_VAL__KHTML_RIGHT ||id == CSS_VAL_NONE || id == CSS_VAL_CENTER)
valid_primitive = true;
break;
case CSS_PROP_CLEAR: // none | left | right | both | inherit
if ( id == CSS_VAL_NONE || id == CSS_VAL_LEFT ||
id == CSS_VAL_RIGHT|| id == CSS_VAL_BOTH)
valid_primitive = true;
break;
case CSS_PROP_TEXT_ALIGN:
// left | right | center | justify | khtml_left | khtml_right | khtml_center | <string> | inherit
if ( ( id >= CSS_VAL__KHTML_AUTO && id <= CSS_VAL__KHTML_CENTER ) ||
value->unit == CSSPrimitiveValue::CSS_STRING )
valid_primitive = true;
break;
case CSS_PROP_OUTLINE_STYLE: // <border-style> | inherit
case CSS_PROP_BORDER_TOP_STYLE: //// <border-style> | inherit
case CSS_PROP_BORDER_RIGHT_STYLE: // Defined as: none | hidden | dotted | dashed |
case CSS_PROP_BORDER_BOTTOM_STYLE: // solid | double | groove | ridge | inset | outset | -khtml-native
case CSS_PROP_BORDER_LEFT_STYLE: ////
if (id >= CSS_VAL__KHTML_NATIVE && id <= CSS_VAL_DOUBLE)
valid_primitive = true;
break;
case CSS_PROP_FONT_WEIGHT: // normal | bold | bolder | lighter | 100 | 200 | 300 | 400 |
// 500 | 600 | 700 | 800 | 900 | inherit
if (id >= CSS_VAL_NORMAL && id <= CSS_VAL_900) {
// Allready correct id
valid_primitive = true;
} else if ( validUnit( value, FInteger|FNonNeg, false ) ) {
int weight = (int)value->fValue;
if ( (weight % 100) )
break;
weight /= 100;
if ( weight >= 1 && weight <= 9 ) {
id = CSS_VAL_100 + weight - 1;
valid_primitive = true;
}
}
break;
case CSS_PROP_BORDER_SPACING:
{
const int properties[2] = { CSS_PROP__KHTML_BORDER_HORIZONTAL_SPACING,
CSS_PROP__KHTML_BORDER_VERTICAL_SPACING };
if (num == 1) {
ShorthandScope scope(this, CSS_PROP_BORDER_SPACING);
if (!parseValue(properties[0], important)) return false;
CSSValueImpl* value = parsedProperties[numParsedProperties-1]->value();
addProperty(properties[1], value, important);
return true;
}
else if (num == 2) {
ShorthandScope scope(this, CSS_PROP_BORDER_SPACING);
if (!parseValue(properties[0], important)) return false;
if (!parseValue(properties[1], important)) return false;
return true;
}
return false;
}
case CSS_PROP__KHTML_BORDER_HORIZONTAL_SPACING:
case CSS_PROP__KHTML_BORDER_VERTICAL_SPACING:
valid_primitive = validUnit(value, FLength|FNonNeg, strict&(!nonCSSHint));
break;
case CSS_PROP_SCROLLBAR_FACE_COLOR: // IE5.5
case CSS_PROP_SCROLLBAR_SHADOW_COLOR: // IE5.5
case CSS_PROP_SCROLLBAR_HIGHLIGHT_COLOR: // IE5.5
case CSS_PROP_SCROLLBAR_3DLIGHT_COLOR: // IE5.5
case CSS_PROP_SCROLLBAR_DARKSHADOW_COLOR: // IE5.5
case CSS_PROP_SCROLLBAR_TRACK_COLOR: // IE5.5
case CSS_PROP_SCROLLBAR_ARROW_COLOR: // IE5.5
case CSS_PROP_SCROLLBAR_BASE_COLOR: // IE5.5
if ( strict )
break;
/* nobreak */
case CSS_PROP_OUTLINE_COLOR: // <color> | invert | inherit
// outline has "invert" as additional keyword.
if ( propId == CSS_PROP_OUTLINE_COLOR && id == CSS_VAL_INVERT ) {
valid_primitive = true;
break;
}
/* nobreak */
case CSS_PROP_BACKGROUND_COLOR: // <color> | inherit
case CSS_PROP_BORDER_TOP_COLOR: // <color> | inherit
case CSS_PROP_BORDER_RIGHT_COLOR: // <color> | inherit
case CSS_PROP_BORDER_BOTTOM_COLOR: // <color> | inherit
case CSS_PROP_BORDER_LEFT_COLOR: // <color> | inherit
case CSS_PROP_COLOR: // <color> | inherit
if ( id == CSS_VAL__KHTML_TEXT || id == CSS_VAL_MENU ||
(id >= CSS_VAL_AQUA && id <= CSS_VAL_WINDOWTEXT ) ||
id == CSS_VAL_TRANSPARENT ||
(id >= CSS_VAL_GREY && id < CSS_VAL__KHTML_TEXT && (nonCSSHint|!strict) ) ) {
valid_primitive = true;
} else {
parsedValue = parseColor();
if ( parsedValue )
valueList->next();
}
break;
case CSS_PROP_CURSOR:
// [ auto | crosshair | default | pointer | progress | move | e-resize | ne-resize |
// nw-resize | n-resize | se-resize | sw-resize | s-resize | w-resize | text |
// wait | help ] ] | inherit
// MSIE 5 compatibility :/
if ( !strict && id == CSS_VAL_HAND ) {
id = CSS_VAL_POINTER;
valid_primitive = true;
} else if ( id >= CSS_VAL_AUTO && id <= CSS_VAL_HELP )
valid_primitive = true;
break;
case CSS_PROP_BACKGROUND_ATTACHMENT:
case CSS_PROP__KHTML_BACKGROUND_CLIP:
case CSS_PROP_BACKGROUND_IMAGE:
case CSS_PROP__KHTML_BACKGROUND_ORIGIN:
case CSS_PROP_BACKGROUND_POSITION:
case CSS_PROP_BACKGROUND_POSITION_X:
case CSS_PROP_BACKGROUND_POSITION_Y:
case CSS_PROP__KHTML_BACKGROUND_SIZE:
case CSS_PROP_BACKGROUND_REPEAT: {
CSSValueImpl *val1 = 0, *val2 = 0;
int propId1, propId2;
if (parseBackgroundProperty(propId, propId1, propId2, val1, val2)) {
addProperty(propId1, val1, important);
if (val2)
addProperty(propId2, val2, important);
return true;
}
return false;
}
case CSS_PROP_LIST_STYLE_IMAGE: // <uri> | none | inherit
if (id == CSS_VAL_NONE) {
parsedValue = new CSSImageValueImpl();
valueList->next();
}
else if (value->unit == CSSPrimitiveValue::CSS_URI ) {
// ### allow string in non strict mode?
DOMString uri = khtml::parseURL( domString( value->string ) );
if (!uri.isEmpty()) {
parsedValue = new CSSImageValueImpl(
DOMString(KURL( styleElement->baseURL(), uri.string()).url()),
styleElement );
valueList->next();
}
}
break;
case CSS_PROP_OUTLINE_WIDTH: // <border-width> | inherit
case CSS_PROP_BORDER_TOP_WIDTH: //// <border-width> | inherit
case CSS_PROP_BORDER_RIGHT_WIDTH: // Which is defined as
case CSS_PROP_BORDER_BOTTOM_WIDTH: // thin | medium | thick | <length>
case CSS_PROP_BORDER_LEFT_WIDTH: ////
if (id == CSS_VAL_THIN || id == CSS_VAL_MEDIUM || id == CSS_VAL_THICK)
valid_primitive = true;
else
valid_primitive = ( validUnit( value, FLength, strict&(!nonCSSHint) ) );
break;
case CSS_PROP_LETTER_SPACING: // normal | <length> | inherit
case CSS_PROP_WORD_SPACING: // normal | <length> | inherit
if ( id == CSS_VAL_NORMAL )
valid_primitive = true;
else
valid_primitive = validUnit( value, FLength, strict&(!nonCSSHint) );
break;
case CSS_PROP_TEXT_INDENT: // <length> | <percentage> | inherit
valid_primitive = ( !id && validUnit( value, FLength|FPercent, strict&(!nonCSSHint) ) );
break;
case CSS_PROP_PADDING_TOP: // <length> | <percentage> | inherit
case CSS_PROP_PADDING_RIGHT: // <padding-width> | inherit
case CSS_PROP_PADDING_BOTTOM: // Which is defined as
case CSS_PROP_PADDING_LEFT: // <length> | <percentage>
case CSS_PROP__KHTML_PADDING_START:
valid_primitive = ( !id && validUnit( value, FLength|FPercent|FNonNeg, strict&(!nonCSSHint) ) );
break;
case CSS_PROP_MAX_HEIGHT: // <length> | <percentage> | none | inherit
case CSS_PROP_MAX_WIDTH: // <length> | <percentage> | none | inherit
if ( id == CSS_VAL_NONE ) {
valid_primitive = true;
break;
}
/* nobreak */
case CSS_PROP_MIN_HEIGHT: // <length> | <percentage> | inherit
case CSS_PROP_MIN_WIDTH: // <length> | <percentage> | inherit
valid_primitive = ( !id && validUnit( value, FLength|FPercent|FNonNeg, strict&(!nonCSSHint) ) );
break;
case CSS_PROP_FONT_SIZE:
// <absolute-size> | <relative-size> | <length> | <percentage> | inherit
if (id >= CSS_VAL_XX_SMALL && id <= CSS_VAL_LARGER)
valid_primitive = true;
else
valid_primitive = ( validUnit( value, FLength|FPercent, strict&(!nonCSSHint) ) );
break;
case CSS_PROP_FONT_STYLE: // normal | italic | oblique | inherit
if ( id == CSS_VAL_NORMAL || id == CSS_VAL_ITALIC || id == CSS_VAL_OBLIQUE)
valid_primitive = true;
break;
case CSS_PROP_FONT_VARIANT: // normal | small-caps | inherit
if ( id == CSS_VAL_NORMAL || id == CSS_VAL_SMALL_CAPS)
valid_primitive = true;
break;
case CSS_PROP_VERTICAL_ALIGN:
// baseline | sub | super | top | text-top | middle | bottom | text-bottom |
// <percentage> | <length> | inherit
if ( id >= CSS_VAL_BASELINE && id <= CSS_VAL__KHTML_BASELINE_MIDDLE )
valid_primitive = true;
else
valid_primitive = ( !id && validUnit( value, FLength|FPercent, strict&(!nonCSSHint) ) );
break;
case CSS_PROP_HEIGHT: // <length> | <percentage> | auto | inherit
case CSS_PROP_WIDTH: // <length> | <percentage> | auto | inherit
if ( id == CSS_VAL_AUTO )
valid_primitive = true;
else
// ### handle multilength case where we allow relative units
valid_primitive = ( !id && validUnit( value, FLength|FPercent|FNonNeg, strict&(!nonCSSHint) ) );
break;
case CSS_PROP_BOTTOM: // <length> | <percentage> | auto | inherit
case CSS_PROP_LEFT: // <length> | <percentage> | auto | inherit
case CSS_PROP_RIGHT: // <length> | <percentage> | auto | inherit
case CSS_PROP_TOP: // <length> | <percentage> | auto | inherit
case CSS_PROP_MARGIN_TOP: //// <margin-width> | inherit
case CSS_PROP_MARGIN_RIGHT: // Which is defined as
case CSS_PROP_MARGIN_BOTTOM: // <length> | <percentage> | auto | inherit
case CSS_PROP_MARGIN_LEFT: ////
case CSS_PROP__KHTML_MARGIN_START:
if ( id == CSS_VAL_AUTO )
valid_primitive = true;
else
valid_primitive = ( !id && validUnit( value, FLength|FPercent, strict&(!nonCSSHint) ) );
break;
case CSS_PROP_Z_INDEX: // auto | <integer> | inherit
// qDebug("parsing z-index: id=%d, fValue=%f", id, value->fValue );
if ( id == CSS_VAL_AUTO ) {
valid_primitive = true;
break;
}
/* nobreak */
case CSS_PROP_ORPHANS: // <integer> | inherit
case CSS_PROP_WIDOWS: // <integer> | inherit
// ### not supported later on
valid_primitive = ( !id && validUnit( value, FInteger, false ) );
break;
case CSS_PROP_LINE_HEIGHT: // normal | <number> | <length> | <percentage> | inherit
if ( id == CSS_VAL_NORMAL )
valid_primitive = true;
else
valid_primitive = ( !id && validUnit( value, FNumber|FLength|FPercent, strict&(!nonCSSHint) ) );
break;
case CSS_PROP_COUNTER_INCREMENT: // [ <identifier> <integer>? ]+ | none | inherit
if ( id == CSS_VAL_NONE )
valid_primitive = true;
else
return parseCounter(propId, true, important);
break;
case CSS_PROP_COUNTER_RESET: // [ <identifier> <integer>? ]+ | none | inherit
if ( id == CSS_VAL_NONE )
valid_primitive = true;
else
return parseCounter(propId, false, important);
break;
case CSS_PROP_FONT_FAMILY:
// [[ <family-name> | <generic-family> ],]* [<family-name> | <generic-family>] | inherit
{
parsedValue = parseFontFamily();
break;
}
case CSS_PROP_TEXT_DECORATION:
// none | [ underline || overline || line-through || blink ] | inherit
if (id == CSS_VAL_NONE) {
valid_primitive = true;
} else {
CSSValueListImpl *list = new CSSValueListImpl;
bool is_valid = true;
while( is_valid && value ) {
switch ( value->id ) {
case CSS_VAL_BLINK:
break;
case CSS_VAL_UNDERLINE:
case CSS_VAL_OVERLINE:
case CSS_VAL_LINE_THROUGH:
list->append( new CSSPrimitiveValueImpl( value->id ) );
break;
default:
is_valid = false;
}
value = valueList->next();
}
//kdDebug( 6080 ) << "got " << list->length() << "d decorations" << endl;
if(list->length() && is_valid) {
parsedValue = list;
valueList->next();
} else {
delete list;
}
}
break;
case CSS_PROP_TABLE_LAYOUT: // auto | fixed | inherit
if ( id == CSS_VAL_AUTO || id == CSS_VAL_FIXED )
valid_primitive = true;
break;
case CSS_PROP__KHTML_FLOW_MODE:
if ( id == CSS_VAL__KHTML_NORMAL || id == CSS_VAL__KHTML_AROUND_FLOATS )
valid_primitive = true;
break;
/* CSS3 properties */
case CSS_PROP_BOX_SIZING: // border-box | content-box | inherit
if ( id == CSS_VAL_BORDER_BOX || id == CSS_VAL_CONTENT_BOX )
valid_primitive = true;
break;
case CSS_PROP_OUTLINE_OFFSET:
valid_primitive = validUnit(value, FLength, strict);
break;
case CSS_PROP_TEXT_SHADOW: // CSS2 property, dropped in CSS2.1, back in CSS3, so treat as CSS3
if (id == CSS_VAL_NONE)
valid_primitive = true;
else
return parseShadow(propId, important);
break;
case CSS_PROP_OPACITY:
valid_primitive = validUnit(value, FNumber, strict);
break;
case CSS_PROP__KHTML_USER_INPUT: // none | enabled | disabled | inherit
if ( id == CSS_VAL_NONE || id == CSS_VAL_ENABLED || id == CSS_VAL_DISABLED )
valid_primitive = true;
// kdDebug(6080) << "CSS_PROP__KHTML_USER_INPUT: " << valid_primitive << endl;
break;
case CSS_PROP__KHTML_MARQUEE: {
const int properties[5] = { CSS_PROP__KHTML_MARQUEE_DIRECTION, CSS_PROP__KHTML_MARQUEE_INCREMENT,
CSS_PROP__KHTML_MARQUEE_REPETITION,
CSS_PROP__KHTML_MARQUEE_STYLE, CSS_PROP__KHTML_MARQUEE_SPEED };
return parseShortHand(propId, properties, 5, important);
}
case CSS_PROP__KHTML_MARQUEE_DIRECTION:
if (id == CSS_VAL_FORWARDS || id == CSS_VAL_BACKWARDS || id == CSS_VAL_AHEAD ||
id == CSS_VAL_REVERSE || id == CSS_VAL_LEFT || id == CSS_VAL_RIGHT || id == CSS_VAL_DOWN ||
id == CSS_VAL_UP || id == CSS_VAL_AUTO)
valid_primitive = true;
break;
case CSS_PROP__KHTML_MARQUEE_INCREMENT:
if (id == CSS_VAL_SMALL || id == CSS_VAL_LARGE || id == CSS_VAL_MEDIUM)
valid_primitive = true;
else
valid_primitive = validUnit(value, FLength|FPercent, strict&(!nonCSSHint));
break;
case CSS_PROP__KHTML_MARQUEE_STYLE:
if (id == CSS_VAL_NONE || id == CSS_VAL_SLIDE || id == CSS_VAL_SCROLL || id == CSS_VAL_ALTERNATE ||
id == CSS_VAL_UNFURL)
valid_primitive = true;
break;
case CSS_PROP__KHTML_MARQUEE_REPETITION:
if (id == CSS_VAL_INFINITE)
valid_primitive = true;
else
valid_primitive = validUnit(value, FInteger|FNonNeg, strict&(!nonCSSHint));
break;
case CSS_PROP__KHTML_MARQUEE_SPEED:
if (id == CSS_VAL_NORMAL || id == CSS_VAL_SLOW || id == CSS_VAL_FAST)
valid_primitive = true;
else
valid_primitive = validUnit(value, FTime|FInteger|FNonNeg, strict&(!nonCSSHint));
break;
case CSS_PROP_TEXT_OVERFLOW: // clip | ellipsis
if (id == CSS_VAL_CLIP || id == CSS_VAL_ELLIPSIS)
valid_primitive = true;
break;
// End of CSS3 properties
/* shorthand properties */
case CSS_PROP_BACKGROUND:
// ['background-color' || 'background-image' ||'background-repeat' ||
// 'background-attachment' || 'background-position'] | inherit
return parseBackgroundShorthand(important);
case CSS_PROP_BORDER:
// [ 'border-width' || 'border-style' || <color> ] | inherit
{
const int properties[3] = { CSS_PROP_BORDER_WIDTH, CSS_PROP_BORDER_STYLE,
CSS_PROP_BORDER_COLOR };
return parseShortHand(propId, properties, 3, important);
}
case CSS_PROP_BORDER_TOP:
// [ 'border-top-width' || 'border-style' || <color> ] | inherit
{
const int properties[3] = { CSS_PROP_BORDER_TOP_WIDTH, CSS_PROP_BORDER_TOP_STYLE,
CSS_PROP_BORDER_TOP_COLOR};
return parseShortHand(propId, properties, 3, important);
}
case CSS_PROP_BORDER_RIGHT:
// [ 'border-right-width' || 'border-style' || <color> ] | inherit
{
const int properties[3] = { CSS_PROP_BORDER_RIGHT_WIDTH, CSS_PROP_BORDER_RIGHT_STYLE,
CSS_PROP_BORDER_RIGHT_COLOR };
return parseShortHand(propId, properties, 3, important);
}
case CSS_PROP_BORDER_BOTTOM:
// [ 'border-bottom-width' || 'border-style' || <color> ] | inherit
{
const int properties[3] = { CSS_PROP_BORDER_BOTTOM_WIDTH, CSS_PROP_BORDER_BOTTOM_STYLE,
CSS_PROP_BORDER_BOTTOM_COLOR };
return parseShortHand(propId, properties, 3, important);
}
case CSS_PROP_BORDER_LEFT:
// [ 'border-left-width' || 'border-style' || <color> ] | inherit
{
const int properties[3] = { CSS_PROP_BORDER_LEFT_WIDTH, CSS_PROP_BORDER_LEFT_STYLE,
CSS_PROP_BORDER_LEFT_COLOR };
return parseShortHand(propId, properties, 3, important);
}
case CSS_PROP_OUTLINE:
// [ 'outline-color' || 'outline-style' || 'outline-width' ] | inherit
{
const int properties[3] = { CSS_PROP_OUTLINE_WIDTH, CSS_PROP_OUTLINE_STYLE,
CSS_PROP_OUTLINE_COLOR };
return parseShortHand(propId, properties, 3, important);
}
case CSS_PROP_BORDER_COLOR:
// <color>{1,4} | inherit
{
const int properties[4] = { CSS_PROP_BORDER_TOP_COLOR, CSS_PROP_BORDER_RIGHT_COLOR,
CSS_PROP_BORDER_BOTTOM_COLOR, CSS_PROP_BORDER_LEFT_COLOR };
return parse4Values(propId, properties, important);
}
case CSS_PROP_BORDER_WIDTH:
// <border-width>{1,4} | inherit
{
const int properties[4] = { CSS_PROP_BORDER_TOP_WIDTH, CSS_PROP_BORDER_RIGHT_WIDTH,
CSS_PROP_BORDER_BOTTOM_WIDTH, CSS_PROP_BORDER_LEFT_WIDTH };
return parse4Values(propId, properties, important);
}
case CSS_PROP_BORDER_STYLE:
// <border-style>{1,4} | inherit
{
const int properties[4] = { CSS_PROP_BORDER_TOP_STYLE, CSS_PROP_BORDER_RIGHT_STYLE,
CSS_PROP_BORDER_BOTTOM_STYLE, CSS_PROP_BORDER_LEFT_STYLE };
return parse4Values(propId, properties, important);
}
case CSS_PROP_MARGIN:
// <margin-width>{1,4} | inherit
{
const int properties[4] = { CSS_PROP_MARGIN_TOP, CSS_PROP_MARGIN_RIGHT,
CSS_PROP_MARGIN_BOTTOM, CSS_PROP_MARGIN_LEFT };
return parse4Values(propId, properties, important);
}
case CSS_PROP_PADDING:
// <padding-width>{1,4} | inherit
{
const int properties[4] = { CSS_PROP_PADDING_TOP, CSS_PROP_PADDING_RIGHT,
CSS_PROP_PADDING_BOTTOM, CSS_PROP_PADDING_LEFT };
return parse4Values(propId, properties, important);
}
case CSS_PROP_FONT:
// [ [ 'font-style' || 'font-variant' || 'font-weight' ]? 'font-size' [ / 'line-height' ]?
// 'font-family' ] | caption | icon | menu | message-box | small-caption | status-bar | inherit
if ( id >= CSS_VAL_CAPTION && id <= CSS_VAL_STATUS_BAR )
valid_primitive = true;
else
return parseFont(important);
case CSS_PROP_LIST_STYLE:
{
const int properties[3] = { CSS_PROP_LIST_STYLE_TYPE, CSS_PROP_LIST_STYLE_POSITION,
CSS_PROP_LIST_STYLE_IMAGE };
return parseShortHand(propId, properties, 3, important);
}
case CSS_PROP_WORD_WRAP:
{
// normal | break-word
if ( id == CSS_VAL_NORMAL || id == CSS_VAL_BREAK_WORD )
valid_primitive = true;
break;
}
default:
// #ifdef CSS_DEBUG
// kdDebug( 6080 ) << "illegal or CSS2 Aural property: " << val << endl;
// #endif
break;
}
if ( valid_primitive ) {
if ( id != 0 ) {
parsedValue = new CSSPrimitiveValueImpl( id );
} else if ( value->unit == CSSPrimitiveValue::CSS_STRING )
parsedValue = new CSSPrimitiveValueImpl( domString( value->string ),
(CSSPrimitiveValue::UnitTypes) value->unit );
else if ( value->unit >= CSSPrimitiveValue::CSS_NUMBER &&
value->unit <= CSSPrimitiveValue::CSS_KHZ ) {
parsedValue = new CSSPrimitiveValueImpl( value->fValue,
(CSSPrimitiveValue::UnitTypes) value->unit );
} else if ( value->unit >= Value::Q_EMS ) {
parsedValue = new CSSQuirkPrimitiveValueImpl( value->fValue, CSSPrimitiveValue::CSS_EMS );
}
valueList->next();
}
if ( parsedValue ) {
if (!valueList->current() || inShorthand()) {
addProperty( propId, parsedValue, important );
return true;
}
delete parsedValue;
}
return false;
}
void CSSParser::addBackgroundValue(CSSValueImpl*& lval, CSSValueImpl* rval)
{
if (lval) {
if (lval->isValueList())
static_cast<CSSValueListImpl*>(lval)->append(rval);
else {
CSSValueImpl* oldVal = lval;
CSSValueListImpl* list = new CSSValueListImpl();
lval = list;
list->append(oldVal);
list->append(rval);
}
}
else
lval = rval;
}
bool CSSParser::parseBackgroundShorthand(bool important)
{
// Position must come before color in this array because a plain old "0" is a legal color
// in quirks mode but it's usually the X coordinate of a position.
// FIXME: Add CSS_PROP__KHTML_BACKGROUND_SIZE to the shorthand.
const int numProperties = 7;
const int properties[numProperties] = { CSS_PROP_BACKGROUND_IMAGE, CSS_PROP_BACKGROUND_REPEAT,
CSS_PROP_BACKGROUND_ATTACHMENT, CSS_PROP_BACKGROUND_POSITION, CSS_PROP__KHTML_BACKGROUND_CLIP,
CSS_PROP__KHTML_BACKGROUND_ORIGIN, CSS_PROP_BACKGROUND_COLOR };
ShorthandScope scope(this, CSS_PROP_BACKGROUND);
bool parsedProperty[numProperties] = { false }; // compiler will repeat false as necessary
CSSValueImpl* values[numProperties] = { 0 }; // compiler will repeat 0 as necessary
CSSValueImpl* positionYValue = 0;
int i;
while (valueList->current()) {
Value* val = valueList->current();
if (val->unit == Value::Operator && val->iValue == ',') {
// We hit the end. Fill in all remaining values with the initial value.
valueList->next();
for (i = 0; i < numProperties; ++i) {
if (properties[i] == CSS_PROP_BACKGROUND_COLOR && parsedProperty[i])
// Color is not allowed except as the last item in a list. Reject the entire
// property.
goto fail;
if (!parsedProperty[i] && properties[i] != CSS_PROP_BACKGROUND_COLOR) {
addBackgroundValue(values[i], new CSSInitialValueImpl());
if (properties[i] == CSS_PROP_BACKGROUND_POSITION)
addBackgroundValue(positionYValue, new CSSInitialValueImpl());
}
parsedProperty[i] = false;
}
if (!valueList->current())
break;
}
bool found = false;
for (i = 0; !found && i < numProperties; ++i) {
if (!parsedProperty[i]) {
CSSValueImpl *val1 = 0, *val2 = 0;
int propId1, propId2;
if (parseBackgroundProperty(properties[i], propId1, propId2, val1, val2)) {
parsedProperty[i] = found = true;
addBackgroundValue(values[i], val1);
if (properties[i] == CSS_PROP_BACKGROUND_POSITION)
addBackgroundValue(positionYValue, val2);
}
}
}
// if we didn't find at least one match, this is an
// invalid shorthand and we have to ignore it
if (!found)
goto fail;
}
// Fill in any remaining properties with the initial value.
for (i = 0; i < numProperties; ++i) {
if (!parsedProperty[i]) {
addBackgroundValue(values[i], new CSSInitialValueImpl());
if (properties[i] == CSS_PROP_BACKGROUND_POSITION)
addBackgroundValue(positionYValue, new CSSInitialValueImpl());
}
}
// Now add all of the properties we found.
for (i = 0; i < numProperties; i++) {
if (properties[i] == CSS_PROP_BACKGROUND_POSITION) {
addProperty(CSS_PROP_BACKGROUND_POSITION_X, values[i], important);
addProperty(CSS_PROP_BACKGROUND_POSITION_Y, positionYValue, important);
}
else
addProperty(properties[i], values[i], important);
}
return true;
fail:
for (int k = 0; k < numProperties; k++)
delete values[k];
delete positionYValue;
return false;
}
bool CSSParser::parseShortHand(int propId, const int *properties, int numProperties, bool important )
{
/* We try to match as many properties as possible
* We setup an array of booleans to mark which property has been found,
* and we try to search for properties until it makes no longer any sense
*/
ShorthandScope scope(this, propId);
bool found = false;
bool fnd[6]; //Trust me ;)
for( int i = 0; i < numProperties; i++ )
fnd[i] = false;
while ( valueList->current() ) {
found = false;
for (int propIndex = 0; !found && propIndex < numProperties; ++propIndex) {
if (!fnd[propIndex]) {
if ( parseValue( properties[propIndex], important ) ) {
fnd[propIndex] = found = true;
}
}
}
// if we didn't find at least one match, this is an
// invalid shorthand and we have to ignore it
if (!found)
return false;
}
// Fill in any remaining properties with the initial value.
m_implicitShorthand = true;
for (int i = 0; i < numProperties; ++i) {
if (!fnd[i])
addProperty(properties[i], new CSSInitialValueImpl(), important);
}
m_implicitShorthand = false;
return true;
}
bool CSSParser::parse4Values(int propId, const int *properties, bool important )
{
/* From the CSS 2 specs, 8.3
* If there is only one value, it applies to all sides. If there are two values, the top and
* bottom margins are set to the first value and the right and left margins are set to the second.
* If there are three values, the top is set to the first value, the left and right are set to the
* second, and the bottom is set to the third. If there are four values, they apply to the top,
* right, bottom, and left, respectively.
*/
int num = inShorthand() ? 1 : valueList->size();
//qDebug("parse4Values: num=%d %d", num, valueList->numValues );
ShorthandScope scope(this, propId);
// the order is top, right, bottom, left
switch (num) {
case 1: {
if (!parseValue(properties[0], important))
return false;
CSSValueImpl *value = parsedProperties[numParsedProperties-1]->value();
m_implicitShorthand = true;
addProperty(properties[1], value, important);
addProperty(properties[2], value, important);
addProperty(properties[3], value, important);
m_implicitShorthand = false;
break;
}
case 2: {
if (!parseValue(properties[0], important) || !parseValue(properties[1], important))
return false;
CSSValueImpl *value = parsedProperties[numParsedProperties-2]->value();
m_implicitShorthand = true;
addProperty(properties[2], value, important);
value = parsedProperties[numParsedProperties-2]->value();
addProperty(properties[3], value, important);
m_implicitShorthand = false;
break;
}
case 3: {
if (!parseValue(properties[0], important) || !parseValue(properties[1], important) || !parseValue(properties[2], important))
return false;
CSSValueImpl *value = parsedProperties[numParsedProperties-2]->value();
m_implicitShorthand = true;
addProperty(properties[3], value, important);
m_implicitShorthand = false;
break;
}
case 4: {
if (!parseValue(properties[0], important) || !parseValue(properties[1], important) ||
!parseValue(properties[2], important) || !parseValue(properties[3], important))
return false;
break;
}
default: {
return false;
}
}
return true;
}
// [ <string> | <uri> | <counter> | attr(X) | open-quote | close-quote | no-open-quote | no-close-quote ]+ | inherit
// in CSS 2.1 this got somewhat reduced:
// [ <string> | attr(X) | open-quote | close-quote | no-open-quote | no-close-quote ]+ | inherit
bool CSSParser::parseContent( int propId, bool important )
{
CSSValueListImpl* values = new CSSValueListImpl();
bool isValid = true;
Value *val;
CSSValueImpl *parsedValue = 0;
while ( (val = valueList->current()) ) {
parsedValue = 0;
if ( val->unit == CSSPrimitiveValue::CSS_URI ) {
// url
DOMString value = khtml::parseURL(domString(val->string));
parsedValue = new CSSImageValueImpl(
DOMString(KURL( styleElement->baseURL(), value.string()).url() ), styleElement );
#ifdef CSS_DEBUG
kdDebug( 6080 ) << "content, url=" << value.string() << " base=" << styleElement->baseURL().url( ) << endl;
#endif
} else if ( val->unit == Value::Function ) {
// attr( X ) | counter( X [,Y] ) | counters( X, Y, [,Z] )
ValueList *args = val->function->args;
TQString fname = qString( val->function->name ).lower();
if (!args) return false;
if (fname == "attr(") {
if ( args->size() != 1)
return false;
Value *a = args->current();
parsedValue = new CSSPrimitiveValueImpl(domString(a->string), CSSPrimitiveValue::CSS_ATTR);
}
else
if (fname == "counter(") {
parsedValue = parseCounterContent(args, false);
if (!parsedValue) return false;
} else
if (fname == "counters(") {
parsedValue = parseCounterContent(args, true);
if (!parsedValue) return false;
}
else
return false;
} else if ( val->unit == CSSPrimitiveValue::CSS_IDENT ) {
// open-quote | close-quote | no-open-quote | no-close-quote
if ( val->id == CSS_VAL_OPEN_QUOTE ||
val->id == CSS_VAL_CLOSE_QUOTE ||
val->id == CSS_VAL_NO_OPEN_QUOTE ||
val->id == CSS_VAL_NO_CLOSE_QUOTE ) {
parsedValue = new CSSPrimitiveValueImpl(val->id);
}
} else if ( val->unit == CSSPrimitiveValue::CSS_STRING ) {
parsedValue = new CSSPrimitiveValueImpl(domString(val->string), CSSPrimitiveValue::CSS_STRING);
}
if (parsedValue)
values->append(parsedValue);
else {
isValid = false;
break;
}
valueList->next();
}
if ( isValid && values->length() ) {
addProperty( propId, values, important );
valueList->next();
return true;
}
delete values; // also frees any content by deref
return false;
}
CSSValueImpl* CSSParser::parseCounterContent(ValueList *args, bool counters)
{
if (counters || (args->size() != 1 && args->size() != 3))
if (!counters || (args->size() != 3 && args->size() != 5))
return 0;
CounterImpl *counter = new CounterImpl;
Value *i = args->current();
// if (i->unit != CSSPrimitiveValue::CSS_IDENT) goto invalid;
counter->m_identifier = domString(i->string);
if (counters) {
i = args->next();
if (i->unit != Value::Operator || i->iValue != ',') goto invalid;
i = args->next();
if (i->unit != CSSPrimitiveValue::CSS_STRING) goto invalid;
counter->m_separator = domString(i->string);
}
counter->m_listStyle = CSS_VAL_DECIMAL - CSS_VAL_DISC;
i = args->next();
if (i) {
if (i->unit != Value::Operator || i->iValue != ',') goto invalid;
i = args->next();
if (i->unit != CSSPrimitiveValue::CSS_IDENT) goto invalid;
if (i->id < CSS_VAL_DISC || i->id > CSS_VAL__KHTML_CLOSE_QUOTE) goto invalid;
counter->m_listStyle = i->id - CSS_VAL_DISC;
}
return new CSSPrimitiveValueImpl(counter);
invalid:
delete counter;
return 0;
}
CSSValueImpl* CSSParser::parseBackgroundColor()
{
int id = valueList->current()->id;
if (id == CSS_VAL__KHTML_TEXT || id == CSS_VAL_TRANSPARENT ||
(id >= CSS_VAL_AQUA && id <= CSS_VAL_WINDOWTEXT) || id == CSS_VAL_MENU ||
(id >= CSS_VAL_GREY && id < CSS_VAL__KHTML_TEXT && !strict))
return new CSSPrimitiveValueImpl(id);
return parseColor();
}
CSSValueImpl* CSSParser::parseBackgroundImage()
{
if (valueList->current()->id == CSS_VAL_NONE)
return new CSSImageValueImpl();
if (valueList->current()->unit == CSSPrimitiveValue::CSS_URI) {
DOMString uri = khtml::parseURL(domString(valueList->current()->string));
if (!uri.isEmpty())
return new CSSImageValueImpl(DOMString(KURL(styleElement->baseURL(), uri.string()).url()),
styleElement);
}
return 0;
}
CSSValueImpl* CSSParser::parseBackgroundPositionXY(bool& xFound, bool& yFound)
{
int id = valueList->current()->id;
if (id == CSS_VAL_LEFT || id == CSS_VAL_TOP || id == CSS_VAL_RIGHT || id == CSS_VAL_BOTTOM || id == CSS_VAL_CENTER) {
int percent = 0;
if (id == CSS_VAL_LEFT || id == CSS_VAL_RIGHT) {
if (xFound)
return 0;
xFound = true;
if (id == CSS_VAL_RIGHT)
percent = 100;
}
else if (id == CSS_VAL_TOP || id == CSS_VAL_BOTTOM) {
if (yFound)
return 0;
yFound = true;
if (id == CSS_VAL_BOTTOM)
percent = 100;
}
else if (id == CSS_VAL_CENTER)
// Center is ambiguous, so we're not sure which position we've found yet, an x or a y.
percent = 50;
return new CSSPrimitiveValueImpl(percent, CSSPrimitiveValue::CSS_PERCENTAGE);
}
if (validUnit(valueList->current(), FPercent|FLength, strict))
return new CSSPrimitiveValueImpl(valueList->current()->fValue,
(CSSPrimitiveValue::UnitTypes)valueList->current()->unit);
return 0;
}
void CSSParser::parseBackgroundPosition(CSSValueImpl*& value1, CSSValueImpl*& value2)
{
value1 = value2 = 0;
Value* value = valueList->current();
// Parse the first value. We're just making sure that it is one of the valid keywords or a percentage/length.
bool value1IsX = false, value1IsY = false;
value1 = parseBackgroundPositionXY(value1IsX, value1IsY);
if (!value1)
return;
// It only takes one value for background-position to be correctly parsed if it was specified in a shorthand (since we
// can assume that any other values belong to the rest of the shorthand). If we're not parsing a shorthand, though, the
// value was explicitly specified for our property.
value = valueList->next();
// First check for the comma. If so, we are finished parsing this value or value pair.
if (value && value->unit == Value::Operator && value->iValue == ',')
value = 0;
bool value2IsX = false, value2IsY = false;
if (value) {
value2 = parseBackgroundPositionXY(value2IsX, value2IsY);
if (value2)
valueList->next();
else {
if (!inShorthand()) {
delete value1;
value1 = 0;
return;
}
}
}
if (!value2)
// Only one value was specified. If that value was not a keyword, then it sets the x position, and the y position
// is simply 50%. This is our default.
// For keywords, the keyword was either an x-keyword (left/right), a y-keyword (top/bottom), or an ambiguous keyword (center).
// For left/right/center, the default of 50% in the y is still correct.
value2 = new CSSPrimitiveValueImpl(50, CSSPrimitiveValue::CSS_PERCENTAGE);
if (value1IsY || value2IsX) {
// Swap our two values.
CSSValueImpl* val = value2;
value2 = value1;
value1 = val;
}
}
CSSValueImpl* CSSParser::parseBackgroundSize()
{
Value* value = valueList->current();
CSSPrimitiveValueImpl* parsedValue1;
if (value->id == CSS_VAL_AUTO)
parsedValue1 = new CSSPrimitiveValueImpl(0, CSSPrimitiveValue::CSS_UNKNOWN);
else {
if (!validUnit(value, FLength|FPercent, strict))
return 0;
parsedValue1 = new CSSPrimitiveValueImpl(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
}
CSSPrimitiveValueImpl* parsedValue2 = parsedValue1;
if ((value = valueList->next())) {
if (value->id == CSS_VAL_AUTO)
parsedValue2 = new CSSPrimitiveValueImpl(0, CSSPrimitiveValue::CSS_UNKNOWN);
else {
if (!validUnit(value, FLength|FPercent, strict)) {
delete parsedValue1;
return 0;
}
parsedValue2 = new CSSPrimitiveValueImpl(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
}
}
PairImpl* pair = new PairImpl(parsedValue1, parsedValue2);
return new CSSPrimitiveValueImpl(pair);
}
bool CSSParser::parseBackgroundProperty(int propId, int& propId1, int& propId2,
CSSValueImpl*& retValue1, CSSValueImpl*& retValue2)
{
#ifdef CSS_DEBUG
kdDebug(6080) << "parseBackgroundProperty()" << endl;
kdDebug(6080) << "LOOKING FOR: " << getPropertyName(propId).string() << endl;
#endif
CSSValueListImpl *values = 0, *values2 = 0;
Value* val;
CSSValueImpl *value = 0, *value2 = 0;
bool allowComma = false;
retValue1 = retValue2 = 0;
propId1 = propId;
propId2 = propId;
if (propId == CSS_PROP_BACKGROUND_POSITION) {
propId1 = CSS_PROP_BACKGROUND_POSITION_X;
propId2 = CSS_PROP_BACKGROUND_POSITION_Y;
}
while ((val = valueList->current())) {
CSSValueImpl *currValue = 0, *currValue2 = 0;
if (allowComma) {
if (val->unit != Value::Operator || val->iValue != ',')
goto failed;
valueList->next();
allowComma = false;
}
else {
switch (propId) {
case CSS_PROP_BACKGROUND_ATTACHMENT:
if (val->id == CSS_VAL_SCROLL || val->id == CSS_VAL_FIXED) {
currValue = new CSSPrimitiveValueImpl(val->id);
valueList->next();
}
break;
case CSS_PROP_BACKGROUND_COLOR:
currValue = parseBackgroundColor();
if (currValue)
valueList->next();
break;
case CSS_PROP_BACKGROUND_IMAGE:
currValue = parseBackgroundImage();
if (currValue)
valueList->next();
break;
case CSS_PROP__KHTML_BACKGROUND_CLIP:
case CSS_PROP__KHTML_BACKGROUND_ORIGIN:
if (val->id == CSS_VAL_BORDER || val->id == CSS_VAL_PADDING || val->id == CSS_VAL_CONTENT) {
currValue = new CSSPrimitiveValueImpl(val->id);
valueList->next();
}
break;
case CSS_PROP_BACKGROUND_POSITION:
parseBackgroundPosition(currValue, currValue2);
// unlike the other functions, parseBackgroundPosition advances the valueList pointer
break;
case CSS_PROP_BACKGROUND_POSITION_X: {
bool xFound = false, yFound = true;
currValue = parseBackgroundPositionXY(xFound, yFound);
if (currValue)
valueList->next();
break;
}
case CSS_PROP_BACKGROUND_POSITION_Y: {
bool xFound = true, yFound = false;
currValue = parseBackgroundPositionXY(xFound, yFound);
if (currValue)
valueList->next();
break;
}
case CSS_PROP_BACKGROUND_REPEAT:
if (val->id >= CSS_VAL_REPEAT && val->id <= CSS_VAL_NO_REPEAT) {
currValue = new CSSPrimitiveValueImpl(val->id);
valueList->next();
}
break;
case CSS_PROP__KHTML_BACKGROUND_SIZE:
currValue = parseBackgroundSize();
if (currValue)
valueList->next();
break;
}
if (!currValue)
goto failed;
if (value && !values) {
values = new CSSValueListImpl();
values->append(value);
value = 0;
}
if (value2 && !values2) {
values2 = new CSSValueListImpl();
values2->append(value2);
value2 = 0;
}
if (values)
values->append(currValue);
else
value = currValue;
if (currValue2) {
if (values2)
values2->append(currValue2);
else
value2 = currValue2;
}
allowComma = true;
}
// When parsing the 'background' shorthand property, we let it handle building up the lists for all
// properties.
if (inShorthand())
break;
}
if (values && values->length()) {
retValue1 = values;
if (values2 && values2->length())
retValue2 = values2;
return true;
}
if (value) {
retValue1 = value;
retValue2 = value2;
return true;
}
failed:
delete values; delete values2;
delete value; delete value2;
return false;
}
bool CSSParser::parseShape( int propId, bool important )
{
Value *value = valueList->current();
ValueList *args = value->function->args;
TQString fname = qString( value->function->name ).lower();
//qDebug( "parseShape: fname: %d", fname.latin1() );
if ( fname != "rect(" || !args )
return false;
// rect( t, r, b, l ) || rect( t r b l )
if ( args->size() != 4 && args->size() != 7 )
return false;
RectImpl *rect = new RectImpl();
bool valid = true;
int i = 0;
Value *a = args->current();
while ( a ) {
valid = validUnit( a, FLength, strict );
if ( !valid )
break;
CSSPrimitiveValueImpl *length =
new CSSPrimitiveValueImpl( a->fValue, (CSSPrimitiveValue::UnitTypes) a->unit );
if ( i == 0 )
rect->setTop( length );
else if ( i == 1 )
rect->setRight( length );
else if ( i == 2 )
rect->setBottom( length );
else
rect->setLeft( length );
a = args->next();
if ( a && args->size() == 7 ) {
if ( a->unit == Value::Operator && a->iValue == ',' ) {
a = args->next();
} else {
valid = false;
break;
}
}
i++;
}
if ( valid ) {
addProperty( propId, new CSSPrimitiveValueImpl( rect ), important );
valueList->next();
return true;
}
delete rect;
return false;
}
// [ 'font-style' || 'font-variant' || 'font-weight' ]? 'font-size' [ / 'line-height' ]? 'font-family'
bool CSSParser::parseFont( bool important )
{
// kdDebug(6080) << "parsing font property current=" << valueList->currentValue << endl;
bool valid = true;
Value *value = valueList->current();
CSSValueListImpl* family = 0;
CSSPrimitiveValueImpl *style = 0, *variant = 0, *weight = 0, *size = 0, *lineHeight = 0;
// optional font-style, font-variant and font-weight
while ( value ) {
// kdDebug( 6080 ) << "got value " << value->id << " / " << (value->unit == CSSPrimitiveValue::CSS_STRING ||
// value->unit == CSSPrimitiveValue::CSS_IDENT ? qString( value->string ) : TQString::null )
// << endl;
int id = value->id;
if ( id ) {
if ( id == CSS_VAL_NORMAL ) {
// do nothing, it's the initial value for all three
}
/*
else if ( id == CSS_VAL_INHERIT ) {
// set all non set ones to inherit
// This is not that simple as the inherit could also apply to the following font-size.
// very ahrd to tell without looking ahead.
inherit = true;
} */
else if ( id == CSS_VAL_ITALIC || id == CSS_VAL_OBLIQUE ) {
if ( style )
goto invalid;
style = new CSSPrimitiveValueImpl( id );
} else if ( id == CSS_VAL_SMALL_CAPS ) {
if ( variant )
goto invalid;
variant = new CSSPrimitiveValueImpl( id );
} else if ( id >= CSS_VAL_BOLD && id <= CSS_VAL_LIGHTER ) {
if ( weight )
goto invalid;
weight = new CSSPrimitiveValueImpl( id );
} else {
valid = false;
}
} else if ( !weight && validUnit( value, FInteger|FNonNeg, true ) ) {
int w = (int)value->fValue;
int val = 0;
if ( w == 100 )
val = CSS_VAL_100;
else if ( w == 200 )
val = CSS_VAL_200;
else if ( w == 300 )
val = CSS_VAL_300;
else if ( w == 400 )
val = CSS_VAL_400;
else if ( w == 500 )
val = CSS_VAL_500;
else if ( w == 600 )
val = CSS_VAL_600;
else if ( w == 700 )
val = CSS_VAL_700;
else if ( w == 800 )
val = CSS_VAL_800;
else if ( w == 900 )
val = CSS_VAL_900;
if ( val )
weight = new CSSPrimitiveValueImpl( val );
else
valid = false;
} else {
valid = false;
}
if ( !valid )
break;
value = valueList->next();
}
if ( !value )
goto invalid;
// set undefined values to default
if ( !style )
style = new CSSPrimitiveValueImpl( CSS_VAL_NORMAL );
if ( !variant )
variant = new CSSPrimitiveValueImpl( CSS_VAL_NORMAL );
if ( !weight )
weight = new CSSPrimitiveValueImpl( CSS_VAL_NORMAL );
// kdDebug( 6080 ) << " got style, variant and weight current=" << valueList->currentValue << endl;
// now a font size _must_ come
// <absolute-size> | <relative-size> | <length> | <percentage> | inherit
if ( value->id >= CSS_VAL_XX_SMALL && value->id <= CSS_VAL_LARGER )
size = new CSSPrimitiveValueImpl( value->id );
else if ( validUnit( value, FLength|FPercent, strict ) ) {
size = new CSSPrimitiveValueImpl( value->fValue, (CSSPrimitiveValue::UnitTypes) value->unit );
}
value = valueList->next();
if ( !size || !value )
goto invalid;
// kdDebug( 6080 ) << " got size" << endl;
if ( value->unit == Value::Operator && value->iValue == '/' ) {
// line-height
value = valueList->next();
if ( !value )
goto invalid;
if ( value->id == CSS_VAL_NORMAL ) {
// default value, nothing to do
} else if ( validUnit( value, FNumber|FLength|FPercent, strict ) ) {
lineHeight = new CSSPrimitiveValueImpl( value->fValue, (CSSPrimitiveValue::UnitTypes) value->unit );
} else {
goto invalid;
}
value = valueList->next();
if ( !value )
goto invalid;
}
if ( !lineHeight )
lineHeight = new CSSPrimitiveValueImpl( CSS_VAL_NORMAL );
// kdDebug( 6080 ) << " got line height current=" << valueList->currentValue << endl;
// font family must come now
family = parseFontFamily();
if ( valueList->current() || !family )
goto invalid;
//kdDebug( 6080 ) << " got family, parsing ok!" << endl;
addProperty( CSS_PROP_FONT_FAMILY, family, important );
addProperty( CSS_PROP_FONT_STYLE, style, important );
addProperty( CSS_PROP_FONT_VARIANT, variant, important );
addProperty( CSS_PROP_FONT_WEIGHT, weight, important );
addProperty( CSS_PROP_FONT_SIZE, size, important );
addProperty( CSS_PROP_LINE_HEIGHT, lineHeight, important );
return true;
invalid:
//kdDebug(6080) << " -> invalid" << endl;
delete family;
delete style;
delete variant;
delete weight;
delete size;
delete lineHeight;
return false;
}
CSSValueListImpl *CSSParser::parseFontFamily()
{
// kdDebug( 6080 ) << "CSSParser::parseFontFamily current=" << valueList->currentValue << endl;
CSSValueListImpl *list = new CSSValueListImpl;
Value *value = valueList->current();
TQString currFace;
while ( value ) {
// kdDebug( 6080 ) << "got value " << value->id << " / "
// << (value->unit == CSSPrimitiveValue::CSS_STRING ||
// value->unit == CSSPrimitiveValue::CSS_IDENT ? qString( value->string ) : TQString::null )
// << endl;
Value* nextValue = valueList->next();
bool nextValBreaksFont = !nextValue ||
(nextValue->unit == Value::Operator && nextValue->iValue == ',');
bool nextValIsFontName = nextValue &&
((nextValue->id >= CSS_VAL_SERIF && nextValue->id <= CSS_VAL_MONOSPACE) ||
(nextValue->unit == CSSPrimitiveValue::CSS_STRING ||
nextValue->unit == CSSPrimitiveValue::CSS_IDENT));
if (value->id >= CSS_VAL_SERIF && value->id <= CSS_VAL_MONOSPACE) {
if (!currFace.isNull()) {
currFace += ' ';
currFace += qString(value->string);
}
else if (nextValBreaksFont || !nextValIsFontName) {
if ( !currFace.isNull() ) {
list->append( new FontFamilyValueImpl( currFace ) );
currFace = TQString::null;
}
list->append(new CSSPrimitiveValueImpl(value->id));
}
else {
currFace = qString( value->string );
}
}
else if (value->unit == CSSPrimitiveValue::CSS_STRING) {
// Strings never share in a family name.
currFace = TQString::null;
list->append(new FontFamilyValueImpl(qString( value->string) ) );
}
else if (value->unit == CSSPrimitiveValue::CSS_IDENT) {
if (!currFace.isNull()) {
currFace += ' ';
currFace += qString(value->string);
}
else if (nextValBreaksFont || !nextValIsFontName) {
if ( !currFace.isNull() ) {
list->append( new FontFamilyValueImpl( currFace ) );
currFace = TQString::null;
}
list->append(new FontFamilyValueImpl( qString( value->string ) ) );
}
else {
currFace = qString( value->string);
}
}
else {
//kdDebug( 6080 ) << "invalid family part" << endl;
break;
}
if (!nextValue)
break;
if (nextValBreaksFont) {
value = valueList->next();
if ( !currFace.isNull() )
list->append( new FontFamilyValueImpl( currFace ) );
currFace = TQString::null;
}
else if (nextValIsFontName)
value = nextValue;
else
break;
}
if ( !currFace.isNull() )
list->append( new FontFamilyValueImpl( currFace ) );
if ( !list->length() ) {
delete list;
list = 0;
}
return list;
}
bool CSSParser::parseColorParameters(Value* value, int* colorArray, bool parseAlpha)
{
ValueList* args = value->function->args;
Value* v = args->current();
// Get the first value
if (!validUnit(v, FInteger | FPercent, true))
return false;
colorArray[0] = static_cast<int>(v->fValue * (v->unit == CSSPrimitiveValue::CSS_PERCENTAGE ? 256.0 / 100.0 : 1.0));
for (int i = 1; i < 3; i++) {
v = args->next();
if (v->unit != Value::Operator && v->iValue != ',')
return false;
v = args->next();
if (!validUnit(v, FInteger | FPercent, true))
return false;
colorArray[i] = static_cast<int>(v->fValue * (v->unit == CSSPrimitiveValue::CSS_PERCENTAGE ? 256.0 / 100.0 : 1.0));
}
if (parseAlpha) {
v = args->next();
if (v->unit != Value::Operator && v->iValue != ',')
return false;
v = args->next();
if (!validUnit(v, FNumber, true))
return false;
colorArray[3] = static_cast<int>(kMax(0.0, kMin(1.0, v->fValue)) * 255);
}
return true;
}
// CSS3 specification defines the format of a HSL color as
// hsl(<number>, <percent>, <percent>)
// and with alpha, the format is
// hsla(<number>, <percent>, <percent>, <number>)
// The first value, HUE, is in an angle with a value between 0 and 360
bool CSSParser::parseHSLParameters(Value* value, double* colorArray, bool parseAlpha)
{
ValueList* args = value->function->args;
Value* v = args->current();
// Get the first value
if (!validUnit(v, FInteger, true))
return false;
// normalize the Hue value and change it to be between 0 and 1.0
colorArray[0] = (((static_cast<int>(v->fValue) % 360) + 360) % 360) / 360.0;
for (int i = 1; i < 3; i++) {
v = args->next();
if (v->unit != Value::Operator && v->iValue != ',')
return false;
v = args->next();
if (!validUnit(v, FPercent, true))
return false;
colorArray[i] = kMax(0.0, kMin(100.0, v->fValue)) / 100.0; // needs to be value between 0 and 1.0
}
if (parseAlpha) {
v = args->next();
if (v->unit != Value::Operator && v->iValue != ',')
return false;
v = args->next();
if (!validUnit(v, FNumber, true))
return false;
colorArray[3] = kMax(0.0, kMin(1.0, v->fValue));
}
return true;
}
static bool parseColor(int unit, const TQString &name, QRgb& rgb)
{
int len = name.length();
if ( !len )
return false;
bool ok;
if ( len == 3 || len == 6 ) {
int val = name.toInt(&ok, 16);
if ( ok ) {
if (len == 6) {
rgb = (0xff << 24) | val;
return true;
}
else if ( len == 3 ) {
// #abc converts to #aabbcc according to the specs
rgb = (0xff << 24) |
(val&0xf00)<<12 | (val&0xf00)<<8 |
(val&0xf0)<<8 | (val&0xf0)<<4 |
(val&0xf)<<4 | (val&0xf);
return true;
}
}
}
if ( unit == CSSPrimitiveValue::CSS_IDENT ) {
// try a little harder
TQColor tc;
tc.setNamedColor(name.lower());
if ( tc.isValid() ) {
rgb = tc.rgb();
return true;
}
}
return false;
}
CSSPrimitiveValueImpl *CSSParser::parseColor()
{
return parseColorFromValue(valueList->current());
}
CSSPrimitiveValueImpl *CSSParser::parseColorFromValue(Value* value)
{
QRgb c = khtml::transparentColor;
if ( !strict && value->unit == CSSPrimitiveValue::CSS_NUMBER &&
value->fValue >= 0. && value->fValue < 1000000. ) {
TQString str;
str.sprintf( "%06d", (int)(value->fValue+.5) );
if ( !::parseColor( value->unit, str, c ) )
return 0;
}
else if (value->unit == CSSPrimitiveValue::CSS_RGBCOLOR ||
value->unit == CSSPrimitiveValue::CSS_IDENT ||
(!strict && value->unit == CSSPrimitiveValue::CSS_DIMENSION)) {
if ( !::parseColor( value->unit, qString( value->string ), c) )
return 0;
}
else if ( value->unit == Value::Function &&
value->function->args != 0 &&
value->function->args->size() == 5 /* rgb + two commas */ &&
qString( value->function->name ).lower() == "rgb(" ) {
int colorValues[3];
if (!parseColorParameters(value, colorValues, false))
return 0;
colorValues[0] = kMax( 0, kMin( 255, colorValues[0] ) );
colorValues[1] = kMax( 0, kMin( 255, colorValues[1] ) );
colorValues[2] = kMax( 0, kMin( 255, colorValues[2] ) );
c = qRgb(colorValues[0], colorValues[1], colorValues[2]);
} else if (value->unit == Value::Function &&
value->function->args != 0 &&
value->function->args->size() == 7 /* rgba + three commas */ &&
domString(value->function->name).lower() == "rgba(") {
int colorValues[4];
if (!parseColorParameters(value, colorValues, true))
return 0;
colorValues[0] = kMax( 0, kMin( 255, colorValues[0] ) );
colorValues[1] = kMax( 0, kMin( 255, colorValues[1] ) );
colorValues[2] = kMax( 0, kMin( 255, colorValues[2] ) );
c = qRgba(colorValues[0], colorValues[1], colorValues[2], colorValues[3]);
} else if (value->unit == Value::Function &&
value->function->args != 0 &&
value->function->args->size() == 5 /* hsl + two commas */ &&
domString(value->function->name).lower() == "hsl(") {
double colorValues[3];
if (!parseHSLParameters(value, colorValues, false))
return 0;
c = khtml::qRgbaFromHsla(colorValues[0], colorValues[1], colorValues[2], 1.0);
} else if (value->unit == Value::Function &&
value->function->args != 0 &&
value->function->args->size() == 7 /* hsla + three commas */ &&
domString(value->function->name).lower() == "hsla(") {
double colorValues[4];
if (!parseHSLParameters(value, colorValues, true))
return 0;
c = khtml::qRgbaFromHsla(colorValues[0], colorValues[1], colorValues[2], colorValues[3]);
}
else
return 0;
return new CSSPrimitiveValueImpl(c);
}
// This class tracks parsing state for shadow values. If it goes out of scope (e.g., due to an early return)
// without the allowBreak bit being set, then it will clean up all of the objects and destroy them.
struct ShadowParseContext {
ShadowParseContext()
:values(0), x(0), y(0), blur(0), color(0),
allowX(true), allowY(false), allowBlur(false), allowColor(true),
allowBreak(true)
{}
~ShadowParseContext() {
if (!allowBreak) {
delete values;
delete x;
delete y;
delete blur;
delete color;
}
}
bool allowLength() { return allowX || allowY || allowBlur; }
bool failed() { return allowBreak = false; }
void commitValue() {
// Handle the ,, case gracefully by doing nothing.
if (x || y || blur || color) {
if (!values)
values = new CSSValueListImpl();
// Construct the current shadow value and add it to the list.
values->append(new ShadowValueImpl(x, y, blur, color));
}
// Now reset for the next shadow value.
x = y = blur = color = 0;
allowX = allowColor = allowBreak = true;
allowY = allowBlur = false;
}
void commitLength(Value* v) {
CSSPrimitiveValueImpl* val = new CSSPrimitiveValueImpl(v->fValue,
(CSSPrimitiveValue::UnitTypes)v->unit);
if (allowX) {
x = val;
allowX = false; allowY = true; allowColor = false; allowBreak = false;
}
else if (allowY) {
y = val;
allowY = false; allowBlur = true; allowColor = true; allowBreak = true;
}
else if (allowBlur) {
blur = val;
allowBlur = false;
}
else
delete val;
}
void commitColor(CSSPrimitiveValueImpl* val) {
color = val;
allowColor = false;
if (allowX)
allowBreak = false;
else
allowBlur = false;
}
CSSValueListImpl* values;
CSSPrimitiveValueImpl* x;
CSSPrimitiveValueImpl* y;
CSSPrimitiveValueImpl* blur;
CSSPrimitiveValueImpl* color;
bool allowX;
bool allowY;
bool allowBlur;
bool allowColor;
bool allowBreak;
};
bool CSSParser::parseShadow(int propId, bool important)
{
ShadowParseContext context;
Value* val;
while ((val = valueList->current())) {
// Check for a comma break first.
if (val->unit == Value::Operator) {
if (val->iValue != ',' || !context.allowBreak)
// Other operators aren't legal or we aren't done with the current shadow
// value. Treat as invalid.
return context.failed();
// The value is good. Commit it.
context.commitValue();
}
// Check to see if we're a length.
else if (validUnit(val, FLength, true)) {
// We required a length and didn't get one. Invalid.
if (!context.allowLength())
return context.failed();
// A length is allowed here. Construct the value and add it.
context.commitLength(val);
}
else {
// The only other type of value that's ok is a color value.
CSSPrimitiveValueImpl* parsedColor = 0;
bool isColor = (val->id >= CSS_VAL_AQUA && val->id <= CSS_VAL_WINDOWTEXT || val->id == CSS_VAL_MENU ||
(val->id >= CSS_VAL_GREY && val->id <= CSS_VAL__KHTML_TEXT && !strict));
if (!context.allowColor)
return context.failed();
if (isColor)
parsedColor = new CSSPrimitiveValueImpl(val->id);
if (!parsedColor)
// It's not built-in. Try to parse it as a color.
parsedColor = parseColorFromValue(val);
if (!parsedColor)
return context.failed();
context.commitColor(parsedColor);
}
valueList->next();
}
if (context.allowBreak) {
context.commitValue();
if (context.values->length()) {
addProperty(propId, context.values, important);
valueList->next();
return true;
}
}
return context.failed();
}
bool CSSParser::parseCounter(int propId, bool increment, bool important)
{
enum { ID, VAL, COMMA } state = ID;
CSSValueListImpl *list = new CSSValueListImpl;
DOMString c;
Value* val;
while (true) {
val = valueList->current();
switch (state) {
// Commas are not allowed according to the standard, but Opera allows them and being the only
// other browser with counter support we need to match their behavior to work with current use
case COMMA:
state = ID;
if (val && val->unit == Value::Operator && val->iValue == ',') {
valueList->next();
continue;
}
// no break
case ID:
if (val && val->unit == CSSPrimitiveValue::CSS_IDENT) {
c = qString(val->string);
state = VAL;
valueList->next();
continue;
}
break;
case VAL: {
short i = 0;
if (val && val->unit == CSSPrimitiveValue::CSS_NUMBER) {
i = (short)val->fValue;
valueList->next();
} else
i = (increment) ? 1 : 0;
CounterActImpl *cv = new CounterActImpl(c,i);
list->append(cv);
state = COMMA;
continue;
}
}
break;
}
if(list->length() > 0) {
addProperty( propId, list, important );
return true;
}
delete list;
return false;
}
static inline int yyerror( const char *str ) {
// assert( 0 );
#ifdef CSS_DEBUG
kdDebug( 6080 ) << "CSS parse error " << str << endl;
#else
Q_UNUSED( str );
#endif
return 1;
}
#define END 0
#include "parser.h"
int DOM::CSSParser::lex( void *_yylval )
{
YYSTYPE *yylval = (YYSTYPE *)_yylval;
int token = lex();
int length;
unsigned short *t = text( &length );
#ifdef TOKEN_DEBUG
qDebug("CSSTokenizer: got token %d: '%s'", token, token == END ? "" : TQString( (TQChar *)t, length ).latin1() );
#endif
switch( token ) {
case '{':
block_nesting++;
break;
case '}':
if ( block_nesting )
block_nesting--;
break;
case END:
if ( block_nesting ) {
block_nesting--;
return '}';
}
break;
case S:
case SGML_CD:
case INCLUDES:
case DASHMATCH:
break;
case URI:
case STRING:
case IDENT:
case NTH:
case HASH:
case DIMEN:
case UNICODERANGE:
case NOTFUNCTION:
case FUNCTION:
yylval->string.string = t;
yylval->string.length = length;
break;
case IMPORT_SYM:
case PAGE_SYM:
case MEDIA_SYM:
case FONT_FACE_SYM:
case CHARSET_SYM:
case NAMESPACE_SYM:
case IMPORTANT_SYM:
break;
case QEMS:
length--;
case GRADS:
length--;
case DEGS:
case RADS:
case KHERZ:
length--;
case MSECS:
case HERZ:
case EMS:
case EXS:
case PXS:
case CMS:
case MMS:
case INS:
case PTS:
case PCS:
length--;
case SECS:
case PERCENTAGE:
length--;
case FLOAT:
case INTEGER:
yylval->val = TQString( (TQChar *)t, length ).toDouble();
//qDebug("value = %s, converted=%.2f", TQString( (TQChar *)t, length ).latin1(), yylval->val );
break;
default:
break;
}
return token;
}
static inline int toHex( char c ) {
if ( '0' <= c && c <= '9' )
return c - '0';
if ( 'a' <= c && c <= 'f' )
return c - 'a' + 10;
if ( 'A' <= c && c<= 'F' )
return c - 'A' + 10;
return 0;
}
unsigned short *DOM::CSSParser::text(int *length)
{
unsigned short *start = yytext;
int l = yyleng;
switch( yyTok ) {
case STRING:
l--;
/* nobreak */
case HASH:
start++;
l--;
break;
case URI:
// "url("{w}{string}{w}")"
// "url("{w}{url}{w}")"
// strip "url(" and ")"
start += 4;
l -= 5;
// strip {w}
while ( l &&
(*start == ' ' || *start == '\t' || *start == '\r' ||
*start == '\n' || *start == '\f' ) ) {
start++; l--;
}
if ( *start == '"' || *start == '\'' ) {
start++; l--;
}
while ( l &&
(start[l-1] == ' ' || start[l-1] == '\t' || start[l-1] == '\r' ||
start[l-1] == '\n' || start[l-1] == '\f' ) ) {
l--;
}
if ( l && (start[l-1] == '\"' || start[l-1] == '\'' ) )
l--;
default:
break;
}
// process escapes
unsigned short *out = start;
unsigned short *escape = 0;
for ( int i = 0; i < l; i++ ) {
unsigned short *current = start+i;
if ( escape == current - 1 ) {
if ( ( *current >= '0' && *current <= '9' ) ||
( *current >= 'a' && *current <= 'f' ) ||
( *current >= 'A' && *current <= 'F' ) )
continue;
if ( yyTok == STRING &&
( *current == '\n' || *current == '\r' || *current == '\f' ) ) {
// ### handle \r\n case
if ( *current != '\r' )
escape = 0;
continue;
}
// in all other cases copy the char to output
// ###
*out++ = *current;
escape = 0;
continue;
}
if ( escape == current - 2 && yyTok == STRING &&
*(current-1) == '\r' && *current == '\n' ) {
escape = 0;
continue;
}
if ( escape > current - 7 &&
( ( *current >= '0' && *current <= '9' ) ||
( *current >= 'a' && *current <= 'f' ) ||
( *current >= 'A' && *current <= 'F' ) ) )
continue;
if ( escape ) {
// add escaped char
int uc = 0;
escape++;
while ( escape < current ) {
// qDebug("toHex( %c = %x", (char)*escape, toHex( *escape ) );
uc *= 16;
uc += toHex( *escape );
escape++;
}
// qDebug(" converting escape: string='%s', value=0x%x", TQString( (TQChar *)e, current-e ).latin1(), uc );
// can't handle chars outside ucs2
if ( uc > 0xffff )
uc = 0xfffd;
*(out++) = (unsigned short)uc;
escape = 0;
if ( *current == ' ' ||
*current == '\t' ||
*current == '\r' ||
*current == '\n' ||
*current == '\f' )
continue;
}
if ( !escape && *current == '\\' ) {
escape = current;
continue;
}
*(out++) = *current;
}
if ( escape ) {
// add escaped char
int uc = 0;
escape++;
while ( escape < start+l ) {
// qDebug("toHex( %c = %x", (char)*escape, toHex( *escape ) );
uc *= 16;
uc += toHex( *escape );
escape++;
}
// qDebug(" converting escape: string='%s', value=0x%x", TQString( (TQChar *)e, current-e ).latin1(), uc );
// can't handle chars outside ucs2
if ( uc > 0xffff )
uc = 0xfffd;
*(out++) = (unsigned short)uc;
}
*length = out - start;
return start;
}
#define YY_DECL int DOM::CSSParser::lex()
#define yyconst const
typedef int yy_state_type;
typedef unsigned int YY_CHAR;
// this line makes sure we treat all Unicode chars correctly.
#define YY_SC_TO_UI(c) (c > 0xff ? 0xff : c)
#define YY_DO_BEFORE_ACTION \
yytext = yy_bp; \
yyleng = (int) (yy_cp - yy_bp); \
yy_hold_char = *yy_cp; \
*yy_cp = 0; \
yy_c_buf_p = yy_cp;
#define YY_BREAK break;
#define ECHO qDebug( "%s", TQString( (TQChar *)yytext, yyleng ).latin1() )
#define YY_RULE_SETUP
#define INITIAL 0
#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
#define YY_START ((yy_start - 1) / 2)
#define yyterminate() yyTok = END; return yyTok
#define YY_FATAL_ERROR(a) qFatal(a)
#define BEGIN yy_start = 1 + 2 *
#define COMMENT 1
#include "tokenizer.cpp"
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