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tdelibs/khtml/html/htmltokenizer.cpp

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/*
This file is part of the KDE libraries
Copyright (C) 1997 Martin Jones (mjones@kde.org)
(C) 1997 Torben Weis (weis@kde.org)
(C) 1998 Waldo Bastian (bastian@kde.org)
(C) 1999 Lars Knoll (knoll@kde.org)
(C) 1999 Antti Koivisto (koivisto@kde.org)
(C) 2001-2003 Dirk Mueller (mueller@kde.org)
(C) 2004 Apple Computer, Inc.
(C) 2006 Germain Garand (germain@ebooksfrance.org)
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.
*/
//----------------------------------------------------------------------------
//
// KDE HTML Widget - Tokenizers
//#define TOKEN_DEBUG 1
//#define TOKEN_DEBUG 2
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "html/htmltokenizer.h"
#include "html/html_documentimpl.h"
#include "html/htmlparser.h"
#include "html/dtd.h"
#include "misc/loader.h"
#include "misc/htmlhashes.h"
#include "khtmlview.h"
#include "khtml_part.h"
#include "xml/dom_docimpl.h"
#include "css/csshelper.h"
#include "ecma/kjs_proxy.h"
#include <kcharsets.h>
#include <kglobal.h>
#include <ctype.h>
#include <assert.h>
#include <tqvariant.h>
#include <kdebug.h>
#include <stdlib.h>
#include "kentities.c"
using namespace khtml;
static const TQChar commentStart [] = { '<','!','-','-', TQChar::null };
static const char scriptEnd [] = "</script";
static const char xmpEnd [] = "</xmp";
static const char styleEnd [] = "</style";
static const char textareaEnd [] = "</textarea";
static const char titleEnd [] = "</title";
#define KHTML_ALLOC_QCHAR_VEC( N ) (TQChar*) malloc( sizeof(TQChar)*( N ) )
#define KHTML_REALLOC_QCHAR_VEC(P, N ) (TQChar*) realloc(P, sizeof(TQChar)*( N ))
#define KHTML_DELETE_QCHAR_VEC( P ) free((char*)( P ))
// Full support for MS Windows extensions to Latin-1.
// Technically these extensions should only be activated for pages
// marked "windows-1252" or "cp1252", but
// in the standard Microsoft way, these extensions infect hundreds of thousands
// of web pages. Note that people with non-latin-1 Microsoft extensions
// are SOL.
//
// See: http://www.microsoft.com/globaldev/reference/WinCP.asp
// http://www.bbsinc.com/iso8859.html
// http://www.obviously.com/
//
// There may be better equivalents
#if 0
#define fixUpChar(x)
#else
#define fixUpChar(x) \
switch ((x).tqunicode()) \
{ \
case 0x80: (x) = 0x20ac; break; \
case 0x82: (x) = 0x201a; break; \
case 0x83: (x) = 0x0192; break; \
case 0x84: (x) = 0x201e; break; \
case 0x85: (x) = 0x2026; break; \
case 0x86: (x) = 0x2020; break; \
case 0x87: (x) = 0x2021; break; \
case 0x88: (x) = 0x02C6; break; \
case 0x89: (x) = 0x2030; break; \
case 0x8A: (x) = 0x0160; break; \
case 0x8b: (x) = 0x2039; break; \
case 0x8C: (x) = 0x0152; break; \
case 0x8E: (x) = 0x017D; break; \
case 0x91: (x) = 0x2018; break; \
case 0x92: (x) = 0x2019; break; \
case 0x93: (x) = 0x201C; break; \
case 0x94: (x) = 0X201D; break; \
case 0x95: (x) = 0x2022; break; \
case 0x96: (x) = 0x2013; break; \
case 0x97: (x) = 0x2014; break; \
case 0x98: (x) = 0x02DC; break; \
case 0x99: (x) = 0x2122; break; \
case 0x9A: (x) = 0x0161; break; \
case 0x9b: (x) = 0x203A; break; \
case 0x9C: (x) = 0x0153; break; \
case 0x9E: (x) = 0x017E; break; \
case 0x9F: (x) = 0x0178; break; \
default: break; \
}
#endif
// ----------------------------------------------------------------------------
HTMLTokenizer::HTMLTokenizer(DOM::DocumentImpl *_doc, KHTMLView *_view)
{
view = _view;
buffer = 0;
scriptCode = 0;
scriptCodeSize = scriptCodeMaxSize = scriptCodeResync = 0;
charsets = KGlobal::charsets();
parser = new KHTMLParser(_view, _doc);
m_executingScript = 0;
m_autoCloseTimer = 0;
onHold = false;
reset();
}
HTMLTokenizer::HTMLTokenizer(DOM::DocumentImpl *_doc, DOM::DocumentFragmentImpl *i)
{
view = 0;
buffer = 0;
scriptCode = 0;
scriptCodeSize = scriptCodeMaxSize = scriptCodeResync = 0;
charsets = KGlobal::charsets();
parser = new KHTMLParser( i, _doc );
m_executingScript = 0;
m_autoCloseTimer = 0;
onHold = false;
reset();
}
void HTMLTokenizer::reset()
{
assert(m_executingScript == 0);
Q_ASSERT(onHold == false);
m_abort = false;
while (!cachedScript.isEmpty())
cachedScript.dequeue()->deref(this);
if ( buffer )
KHTML_DELETE_QCHAR_VEC(buffer);
buffer = dest = 0;
size = 0;
if ( scriptCode )
KHTML_DELETE_QCHAR_VEC(scriptCode);
scriptCode = 0;
scriptCodeSize = scriptCodeMaxSize = scriptCodeResync = 0;
if (m_autoCloseTimer) {
killTimer(m_autoCloseTimer);
m_autoCloseTimer = 0;
}
currToken.reset();
}
void HTMLTokenizer::begin()
{
m_executingScript = 0;
onHold = false;
reset();
size = 254;
buffer = KHTML_ALLOC_QCHAR_VEC( 255 );
dest = buffer;
tag = NoTag;
pending = NonePending;
discard = NoneDiscard;
pre = false;
prePos = 0;
plaintext = false;
xmp = false;
processingInstruction = false;
script = false;
escaped = false;
style = false;
skipLF = false;
select = false;
comment = false;
server = false;
textarea = false;
title = false;
startTag = false;
tquote = NoQuote;
searchCount = 0;
Entity = NoEntity;
noMoreData = false;
brokenComments = false;
brokenServer = false;
brokenScript = false;
lineno = 0;
scriptStartLineno = 0;
tagStartLineno = 0;
}
void HTMLTokenizer::processListing(TokenizerString list)
{
bool old_pre = pre;
// This function adds the listing 'list' as
// preformatted text-tokens to the token-collection
// thereby converting TABs.
if(!style) pre = true;
prePos = 0;
while ( !list.isEmpty() )
{
checkBuffer(3*TAB_SIZE);
if (skipLF && ( *list != '\n' ))
{
skipLF = false;
}
if (skipLF)
{
skipLF = false;
++list;
}
else if (( *list == '\n' ) || ( *list == '\r' ))
{
if (discard == LFDiscard)
{
// Ignore this LF
discard = NoneDiscard; // We have discarded 1 LF
}
else
{
// Process this LF
if (pending)
addPending();
// we used to do it not at all and we want to have
// it fixed for textarea. So here we are
if ( textarea ) {
prePos++;
*dest++ = *list;
} else
pending = LFPending;
}
/* Check for MS-DOS CRLF sequence */
if (*list == '\r')
{
skipLF = true;
}
++list;
}
else if (( *list == ' ' ) || ( *list == '\t'))
{
if (pending)
addPending();
if (*list == ' ')
pending = SpacePending;
else
pending = TabPending;
++list;
}
else
{
discard = NoneDiscard;
if (pending)
addPending();
prePos++;
*dest++ = *list;
++list;
}
}
if ((pending == SpacePending) || (pending == TabPending))
addPending();
else
pending = NonePending;
prePos = 0;
pre = old_pre;
}
void HTMLTokenizer::parseSpecial(TokenizerString &src)
{
assert( textarea || title || !Entity );
assert( !tag );
assert( xmp+textarea+title+style+script == 1 );
if (script)
scriptStartLineno = lineno+src.lineCount();
if ( comment ) parseComment( src );
while ( !src.isEmpty() ) {
checkScriptBuffer();
unsigned char ch = src->latin1();
if ( !scriptCodeResync && !brokenComments && !textarea && !xmp && ch == '-' && scriptCodeSize >= 3 && !src.escaped() && TQConstString( scriptCode+scriptCodeSize-3, 3 ).string() == "<!-" ) {
comment = true;
scriptCode[ scriptCodeSize++ ] = ch;
++src;
parseComment( src );
continue;
}
if ( scriptCodeResync && !tquote && ( ch == '>' ) ) {
++src;
scriptCodeSize = scriptCodeResync-1;
scriptCodeResync = 0;
scriptCode[ scriptCodeSize ] = scriptCode[ scriptCodeSize + 1 ] = 0;
if ( script )
scriptHandler();
else {
processListing(TokenizerString(scriptCode, scriptCodeSize));
processToken();
if ( style ) { currToken.tid = ID_STYLE + ID_CLOSE_TAG; }
else if ( textarea ) { currToken.tid = ID_TEXTAREA + ID_CLOSE_TAG; }
else if ( title ) { currToken.tid = ID_TITLE + ID_CLOSE_TAG; }
else if ( xmp ) { currToken.tid = ID_XMP + ID_CLOSE_TAG; }
processToken();
script = style = textarea = title = xmp = false;
tquote = NoQuote;
scriptCodeSize = scriptCodeResync = 0;
}
return;
}
// possible end of tagname, lets check.
if ( !scriptCodeResync && !escaped && !src.escaped() && ( ch == '>' || ch == '/' || ch <= ' ' ) && ch &&
scriptCodeSize >= searchStopperLen &&
!TQConstString( scriptCode+scriptCodeSize-searchStopperLen, searchStopperLen ).string().find( searchStopper, 0, false )) {
scriptCodeResync = scriptCodeSize-searchStopperLen+1;
tquote = NoQuote;
continue;
}
if ( scriptCodeResync && !escaped ) {
if(ch == '\"')
tquote = (tquote == NoQuote) ? DoubleQuote : ((tquote == SingleQuote) ? SingleQuote : NoQuote);
else if(ch == '\'')
tquote = (tquote == NoQuote) ? SingleQuote : (tquote == DoubleQuote) ? DoubleQuote : NoQuote;
else if (tquote != NoQuote && (ch == '\r' || ch == '\n'))
tquote = NoQuote;
}
escaped = ( !escaped && ch == '\\' );
if (!scriptCodeResync && (textarea||title) && !src.escaped() && ch == '&') {
TQChar *scriptCodeDest = scriptCode+scriptCodeSize;
++src;
parseEntity(src,scriptCodeDest,true);
scriptCodeSize = scriptCodeDest-scriptCode;
}
else {
scriptCode[ scriptCodeSize++ ] = *src;
++src;
}
}
}
void HTMLTokenizer::scriptHandler()
{
TQString currentScriptSrc = scriptSrc;
scriptSrc = TQString::null;
processListing(TokenizerString(scriptCode, scriptCodeSize));
TQString exScript( buffer, dest-buffer );
processToken();
currToken.tid = ID_SCRIPT + ID_CLOSE_TAG;
processToken();
// Scripts following a frameset element should not be executed or even loaded in the case of extern scripts.
bool followingFrameset = (parser->doc()->body() && parser->doc()->body()->id() == ID_FRAMESET);
bool effectiveScript = !parser->skipMode() && !followingFrameset;
bool deferredScript = false;
if ( effectiveScript ) {
CachedScript* cs = 0;
// forget what we just got, load from src url instead
if ( !currentScriptSrc.isEmpty() && javascript &&
(cs = parser->doc()->docLoader()->requestScript(currentScriptSrc, scriptSrcCharset) )) {
cachedScript.enqueue(cs);
}
if (cs) {
pendingQueue.push(src);
uint scriptCount = cachedScript.count();
setSrc(TokenizerString());
scriptCodeSize = scriptCodeResync = 0;
cs->ref(this);
if (cachedScript.count() == scriptCount)
deferredScript = true;
}
else if (currentScriptSrc.isEmpty() && view && javascript ) {
pendingQueue.push(src);
setSrc(TokenizerString());
scriptCodeSize = scriptCodeResync = 0;
scriptExecution( exScript, TQString::null, tagStartLineno /*scriptStartLineno*/ );
} else {
// script was filtered or disallowed
effectiveScript = false;
}
}
script = false;
scriptCodeSize = scriptCodeResync = 0;
if ( !effectiveScript )
return;
if ( !m_executingScript && cachedScript.isEmpty() ) {
src.append(pendingQueue.pop());
} else if ( cachedScript.isEmpty() ) {
write( pendingQueue.pop(), false );
} else if ( !deferredScript && pendingQueue.count() > 1) {
TokenizerString t = pendingQueue.pop();
pendingQueue.top().prepend( t );
}
}
void HTMLTokenizer::scriptExecution( const TQString& str, const TQString& scriptURL,
int baseLine)
{
bool oldscript = script;
m_executingScript++;
script = false;
TQString url;
if (scriptURL.isNull() && view)
url = static_cast<DocumentImpl*>(view->part()->document().handle())->URL().url();
else
url = scriptURL;
if (view)
view->part()->executeScript(url,baseLine+1,Node(),str);
m_executingScript--;
script = oldscript;
}
void HTMLTokenizer::parseComment(TokenizerString &src)
{
// SGML strict
bool strict = parser->doc()->inStrictMode() && parser->doc()->htmlMode() != DocumentImpl::XHtml && !script && !style;
int delimiterCount = 0;
bool canClose = false;
checkScriptBuffer(src.length());
while ( src.length() ) {
scriptCode[ scriptCodeSize++ ] = *src;
#if defined(TOKEN_DEBUG) && TOKEN_DEBUG > 1
qDebug("comment is now: *%s*", src.toString().left(16).latin1());
#endif
if (strict)
{
if (src->tqunicode() == '-') {
delimiterCount++;
if (delimiterCount == 2) {
delimiterCount = 0;
canClose = !canClose;
}
}
else
delimiterCount = 0;
}
if ((!strict || canClose) && src->tqunicode() == '>')
{
bool handleBrokenComments = brokenComments && !( script || style );
bool scriptEnd=false;
if (!strict)
{
if ( scriptCodeSize > 2 && scriptCode[scriptCodeSize-3] == '-' &&
scriptCode[scriptCodeSize-2] == '-' )
scriptEnd=true;
}
if (canClose || handleBrokenComments || scriptEnd ){
++src;
if ( !( title || script || xmp || textarea || style) ) {
#ifdef COMMENTS_IN_DOM
checkScriptBuffer();
scriptCode[ scriptCodeSize ] = 0;
scriptCode[ scriptCodeSize + 1 ] = 0;
currToken.tid = ID_COMMENT;
processListing(DOMStringIt(scriptCode, scriptCodeSize - 2));
processToken();
currToken.tid = ID_COMMENT + ID_CLOSE_TAG;
processToken();
#endif
scriptCodeSize = 0;
}
comment = false;
return; // Finished parsing comment
}
}
++src;
}
}
void HTMLTokenizer::parseServer(TokenizerString &src)
{
checkScriptBuffer(src.length());
while ( !src.isEmpty() ) {
scriptCode[ scriptCodeSize++ ] = *src;
if (src->tqunicode() == '>' &&
scriptCodeSize > 1 && scriptCode[scriptCodeSize-2] == '%') {
++src;
server = false;
scriptCodeSize = 0;
return; // Finished parsing server include
}
++src;
}
}
void HTMLTokenizer::parseProcessingInstruction(TokenizerString &src)
{
char oldchar = 0;
while ( !src.isEmpty() )
{
unsigned char chbegin = src->latin1();
if(chbegin == '\'') {
tquote = tquote == SingleQuote ? NoQuote : SingleQuote;
}
else if(chbegin == '\"') {
tquote = tquote == DoubleQuote ? NoQuote : DoubleQuote;
}
// Look for '?>'
// some crappy sites omit the "?" before it, so
// we look for an unquoted '>' instead. (IE compatible)
else if ( chbegin == '>' && ( !tquote || oldchar == '?' ) )
{
// We got a '?>' sequence
processingInstruction = false;
++src;
discard=LFDiscard;
return; // Finished parsing comment!
}
++src;
oldchar = chbegin;
}
}
void HTMLTokenizer::parseText(TokenizerString &src)
{
while ( !src.isEmpty() )
{
// do we need to enlarge the buffer?
checkBuffer();
// ascii is okay because we only do ascii comparisons
unsigned char chbegin = src->latin1();
if (skipLF && ( chbegin != '\n' ))
{
skipLF = false;
}
if (skipLF)
{
skipLF = false;
++src;
}
else if (( chbegin == '\n' ) || ( chbegin == '\r' ))
{
if (chbegin == '\r')
skipLF = true;
*dest++ = '\n';
++src;
}
else {
*dest++ = *src;
++src;
}
}
}
void HTMLTokenizer::parseEntity(TokenizerString &src, TQChar *&dest, bool start)
{
if( start )
{
cBufferPos = 0;
entityLen = 0;
Entity = SearchEntity;
}
while( !src.isEmpty() )
{
ushort cc = src->tqunicode();
switch(Entity) {
case NoEntity:
return;
break;
case SearchEntity:
if(cc == '#') {
cBuffer[cBufferPos++] = cc;
++src;
Entity = NumericSearch;
}
else
Entity = EntityName;
break;
case NumericSearch:
if(cc == 'x' || cc == 'X') {
cBuffer[cBufferPos++] = cc;
++src;
Entity = Hexadecimal;
}
else if(cc >= '0' && cc <= '9')
Entity = Decimal;
else
Entity = SearchSemicolon;
break;
case Hexadecimal:
{
int uc = EntityChar.tqunicode();
int ll = kMin<uint>(src.length(), 8);
while(ll--) {
TQChar csrc(src->lower());
cc = csrc.cell();
if(csrc.row() || !((cc >= '0' && cc <= '9') || (cc >= 'a' && cc <= 'f'))) {
break;
}
uc = uc*16 + (cc - ( cc < 'a' ? '0' : 'a' - 10));
cBuffer[cBufferPos++] = cc;
++src;
}
EntityChar = TQChar(uc);
Entity = SearchSemicolon;
break;
}
case Decimal:
{
int uc = EntityChar.tqunicode();
int ll = kMin(src.length(), 9-cBufferPos);
while(ll--) {
cc = src->cell();
if(src->row() || !(cc >= '0' && cc <= '9')) {
Entity = SearchSemicolon;
break;
}
uc = uc * 10 + (cc - '0');
cBuffer[cBufferPos++] = cc;
++src;
}
EntityChar = TQChar(uc);
if(cBufferPos == 9) Entity = SearchSemicolon;
break;
}
case EntityName:
{
int ll = kMin(src.length(), 9-cBufferPos);
while(ll--) {
TQChar csrc = *src;
cc = csrc.cell();
if(csrc.row() || !((cc >= 'a' && cc <= 'z') ||
(cc >= '0' && cc <= '9') || (cc >= 'A' && cc <= 'Z'))) {
Entity = SearchSemicolon;
break;
}
cBuffer[cBufferPos++] = cc;
++src;
// be IE compatible and interpret even unterminated entities
// outside tags. like "foo &nbspstuff bla".
if ( tag == NoTag ) {
const entity* e = kde_findEntity(cBuffer, cBufferPos);
if ( e && e->code < 256 ) {
EntityChar = e->code;
entityLen = cBufferPos;
}
}
}
if(cBufferPos == 9) Entity = SearchSemicolon;
if(Entity == SearchSemicolon) {
if(cBufferPos > 1) {
const entity *e = kde_findEntity(cBuffer, cBufferPos);
// IE only accepts unterminated entities < 256,
// Gecko accepts them all, but only outside tags
if(e && ( tag == NoTag || e->code < 256 || *src == ';' )) {
EntityChar = e->code;
entityLen = cBufferPos;
}
}
}
break;
}
case SearchSemicolon:
#ifdef TOKEN_DEBUG
kdDebug( 6036 ) << "ENTITY " << EntityChar.tqunicode() << endl;
#endif
fixUpChar(EntityChar);
if (*src == ';')
++src;
if ( !EntityChar.isNull() ) {
checkBuffer();
if (entityLen > 0 && entityLen < cBufferPos) {
int rem = cBufferPos - entityLen;
src.prepend( TokenizerString(TQString::fromAscii(cBuffer+entityLen, rem)) );
}
src.push( EntityChar );
} else {
#ifdef TOKEN_DEBUG
kdDebug( 6036 ) << "unknown entity!" << endl;
#endif
checkBuffer(11);
// ignore the sequence, add it to the buffer as plaintext
*dest++ = '&';
for(unsigned int i = 0; i < cBufferPos; i++)
dest[i] = cBuffer[i];
dest += cBufferPos;
if (pre)
prePos += cBufferPos+1;
}
Entity = NoEntity;
EntityChar = TQChar::null;
return;
};
}
}
void HTMLTokenizer::parseTag(TokenizerString &src)
{
assert(!Entity );
checkScriptBuffer( src.length() );
while ( !src.isEmpty() )
{
checkBuffer();
#if defined(TOKEN_DEBUG) && TOKEN_DEBUG > 1
uint l = 0;
while(l < src.length() && (src.toString()[l]).latin1() != '>')
l++;
qDebug("src is now: *%s*, tquote: %d",
src.toString().left(l).latin1(), tquote);
#endif
switch(tag) {
case NoTag:
return;
case TagName:
{
#if defined(TOKEN_DEBUG) && TOKEN_DEBUG > 1
qDebug("TagName");
#endif
if (searchCount > 0)
{
if (*src == commentStart[searchCount])
{
searchCount++;
if (searchCount == 4)
{
#ifdef TOKEN_DEBUG
kdDebug( 6036 ) << "Found comment" << endl;
#endif
// Found '<!--' sequence
++src;
dest = buffer; // ignore the previous part of this tag
tag = NoTag;
comment = true;
parseComment(src);
return; // Finished parsing tag!
}
// cuts of high part, is okay
cBuffer[cBufferPos++] = src->cell();
++src;
break;
}
else
searchCount = 0; // Stop looking for '<!--' sequence
}
bool finish = false;
unsigned int ll = kMin(src.length(), CBUFLEN-cBufferPos);
while(ll--) {
ushort curchar = *src;
if(curchar <= ' ' || curchar == '>' ) {
finish = true;
break;
}
// this is a nasty performance trick. will work for the A-Z
// characters, but not for others. if it contains one,
// we fail anyway
char cc = curchar;
cBuffer[cBufferPos++] = cc | 0x20;
++src;
}
// Disadvantage: we add the possible rest of the tag
// as attribute names. ### judge if this causes problems
if(finish || CBUFLEN == cBufferPos) {
bool beginTag;
char* ptr = cBuffer;
unsigned int len = cBufferPos;
cBuffer[cBufferPos] = '\0';
if ((cBufferPos > 0) && (*ptr == '/'))
{
// End Tag
beginTag = false;
ptr++;
len--;
}
else
// Start Tag
beginTag = true;
// Accept empty xml tags like <br/>
if(len > 1 && ptr[len-1] == '/' ) {
ptr[--len] = '\0';
// if its like <br/> and not like <input/ value=foo>, take it as flat
if (*src == '>')
currToken.flat = true;
}
uint tagID = khtml::getTagID(ptr, len);
if (!tagID) {
#ifdef TOKEN_DEBUG
TQCString tmp(ptr, len+1);
kdDebug( 6036 ) << "Unknown tag: \"" << tmp.data() << "\"" << endl;
#endif
dest = buffer;
}
else
{
#ifdef TOKEN_DEBUG
TQCString tmp(ptr, len+1);
kdDebug( 6036 ) << "found tag id=" << tagID << ": " << tmp.data() << endl;
#endif
currToken.tid = beginTag ? tagID : tagID + ID_CLOSE_TAG;
dest = buffer;
}
tag = SearchAttribute;
cBufferPos = 0;
}
break;
}
case SearchAttribute:
{
#if defined(TOKEN_DEBUG) && TOKEN_DEBUG > 1
qDebug("SearchAttribute");
#endif
bool atespace = false;
ushort curchar;
while(!src.isEmpty()) {
curchar = *src;
if(curchar > ' ') {
if(curchar == '<' || curchar == '>')
tag = SearchEnd;
else if(atespace && (curchar == '\'' || curchar == '"'))
{
tag = SearchValue;
*dest++ = 0;
attrName = TQString::null;
}
else
tag = AttributeName;
cBufferPos = 0;
break;
}
atespace = true;
++src;
}
break;
}
case AttributeName:
{
#if defined(TOKEN_DEBUG) && TOKEN_DEBUG > 1
qDebug("AttributeName");
#endif
ushort curchar;
int ll = kMin(src.length(), CBUFLEN-cBufferPos);
while(ll--) {
curchar = *src;
if(curchar <= '>') {
if(curchar <= ' ' || curchar == '=' || curchar == '>') {
unsigned int a;
cBuffer[cBufferPos] = '\0';
a = khtml::getAttrID(cBuffer, cBufferPos);
if ( !a ) {
// did we just get /> or e.g checked/>
if (curchar == '>' && cBufferPos >=1 && cBuffer[cBufferPos-1] == '/') {
currToken.flat = true;
if (cBufferPos>1)
a = khtml::getAttrID(cBuffer, cBufferPos-1);
}
if (!a)
attrName = TQString::fromLatin1(TQCString(cBuffer, cBufferPos+1).data());
}
dest = buffer;
*dest++ = a;
#ifdef TOKEN_DEBUG
if (!a || (cBufferPos && *cBuffer == '!'))
kdDebug( 6036 ) << "Unknown attribute: *" << TQCString(cBuffer, cBufferPos+1).data() << "*" << endl;
else
kdDebug( 6036 ) << "Known attribute: " << TQCString(cBuffer, cBufferPos+1).data() << endl;
#endif
tag = SearchEqual;
break;
}
}
cBuffer[cBufferPos++] =
( curchar >= 'A' && curchar <= 'Z' ) ? curchar | 0x20 : curchar;
++src;
}
if ( cBufferPos == CBUFLEN ) {
cBuffer[cBufferPos] = '\0';
attrName = TQString::fromLatin1(TQCString(cBuffer, cBufferPos+1).data());
dest = buffer;
*dest++ = 0;
tag = SearchEqual;
}
break;
}
case SearchEqual:
{
#if defined(TOKEN_DEBUG) && TOKEN_DEBUG > 1
qDebug("SearchEqual");
#endif
ushort curchar;
bool atespace = false;
while(!src.isEmpty()) {
curchar = src->tqunicode();
if(curchar > ' ') {
if(curchar == '=') {
#ifdef TOKEN_DEBUG
kdDebug(6036) << "found equal" << endl;
#endif
tag = SearchValue;
++src;
}
else if(atespace && (curchar == '\'' || curchar == '"'))
{
tag = SearchValue;
*dest++ = 0;
attrName = TQString::null;
}
else {
DOMString v("");
currToken.addAttribute(parser->docPtr(), buffer, attrName, v);
dest = buffer;
tag = SearchAttribute;
}
break;
}
atespace = true;
++src;
}
break;
}
case SearchValue:
{
ushort curchar;
while(!src.isEmpty()) {
curchar = src->tqunicode();
if(curchar > ' ') {
if(( curchar == '\'' || curchar == '\"' )) {
tquote = curchar == '\"' ? DoubleQuote : SingleQuote;
tag = QuotedValue;
++src;
} else
tag = Value;
break;
}
++src;
}
break;
}
case QuotedValue:
{
#if defined(TOKEN_DEBUG) && TOKEN_DEBUG > 1
qDebug("QuotedValue");
#endif
ushort curchar;
while(!src.isEmpty()) {
checkBuffer();
curchar = src->tqunicode();
if(curchar <= '\'' && !src.escaped()) {
// ### attributes like '&{blaa....};' are supposed to be treated as jscript.
if ( curchar == '&' )
{
++src;
parseEntity(src, dest, true);
break;
}
else if ( (tquote == SingleQuote && curchar == '\'') ||
(tquote == DoubleQuote && curchar == '\"') )
{
// some <input type=hidden> rely on trailing spaces. argh
while(dest > buffer+1 && (*(dest-1) == '\n' || *(dest-1) == '\r'))
dest--; // remove trailing newlines
DOMString v(buffer+1, dest-buffer-1);
currToken.addAttribute(parser->docPtr(), buffer, attrName, v);
dest = buffer;
tag = SearchAttribute;
tquote = NoQuote;
++src;
break;
}
}
*dest++ = *src;
++src;
}
break;
}
case Value:
{
#if defined(TOKEN_DEBUG) && TOKEN_DEBUG > 1
qDebug("Value");
#endif
ushort curchar;
while(!src.isEmpty()) {
checkBuffer();
curchar = src->tqunicode();
if(curchar <= '>' && !src.escaped()) {
// parse Entities
if ( curchar == '&' )
{
++src;
parseEntity(src, dest, true);
break;
}
// no quotes. Every space means end of value
// '/' does not delimit in IE!
if ( curchar <= ' ' || curchar == '>' )
{
DOMString v(buffer+1, dest-buffer-1);
currToken.addAttribute(parser->docPtr(), buffer, attrName, v);
dest = buffer;
tag = SearchAttribute;
break;
}
}
*dest++ = *src;
++src;
}
break;
}
case SearchEnd:
{
#if defined(TOKEN_DEBUG) && TOKEN_DEBUG > 1
qDebug("SearchEnd");
#endif
while(!src.isEmpty()) {
if(*src == '<' || *src == '>')
break;
if (*src == '/')
currToken.flat = true;
++src;
}
if(src.isEmpty() && *src != '<' && *src != '>') break;
searchCount = 0; // Stop looking for '<!--' sequence
tag = NoTag;
tquote = NoQuote;
if ( *src == '>' )
++src;
if ( !currToken.tid ) //stop if tag is unknown
return;
uint tagID = currToken.tid;
#if defined(TOKEN_DEBUG) && TOKEN_DEBUG > 0
kdDebug( 6036 ) << "appending Tag: " << tagID << endl;
#endif
// If the tag requires an end tag it cannot be flat,
// unless we are using the HTML parser to parse XHTML
// The only exception is SCRIPT and priority 0 tokens.
if (tagID < ID_CLOSE_TAG && tagID != ID_SCRIPT &&
DOM::endTag[tagID] == DOM::REQUIRED &&
parser->doc()->htmlMode() != DocumentImpl::XHtml)
currToken.flat = false;
bool beginTag = !currToken.flat && (tagID < ID_CLOSE_TAG);
if(tagID >= ID_CLOSE_TAG)
tagID -= ID_CLOSE_TAG;
else if ( !brokenScript && tagID == ID_SCRIPT ) {
DOMStringImpl* a = 0;
bool foundTypeAttribute = false;
scriptSrc = scriptSrcCharset = TQString::null;
if ( currToken.attrs && /* potentially have a ATTR_SRC ? */
view && /* are we a regular tokenizer or just for innerHTML ? */
parser->doc()->view()->part()->jScriptEnabled() /* jscript allowed at all? */
) {
if ( ( a = currToken.attrs->getValue( ATTR_SRC ) ) )
scriptSrc = parser->doc()->completeURL(khtml::parseURL( DOMString(a) ).string() );
if ( ( a = currToken.attrs->getValue( ATTR_CHARSET ) ) )
scriptSrcCharset = DOMString(a).string().stripWhiteSpace();
if ( scriptSrcCharset.isEmpty() && view)
scriptSrcCharset = parser->doc()->view()->part()->encoding();
/* Check type before language, since language is deprecated */
if ((a = currToken.attrs->getValue(ATTR_TYPE)) != 0 && !DOMString(a).string().isEmpty())
foundTypeAttribute = true;
else
a = currToken.attrs->getValue(ATTR_LANGUAGE);
}
javascript = true;
if( foundTypeAttribute ) {
/*
Mozilla 1.5 doesn't accept the text/javascript1.x formats, but WinIE 6 does.
Mozilla 1.5 doesn't accept text/jscript, text/ecmascript, and text/livescript, but WinIE 6 does.
Mozilla 1.5 accepts application/x-javascript, WinIE 6 doesn't.
Mozilla 1.5 allows leading and trailing whitespace, but WinIE 6 doesn't.
Mozilla 1.5 and WinIE 6 both accept the empty string, but neither accept a whitespace-only string.
We want to accept all the values that either of these browsers accept, but not other values.
*/
TQString type = DOMString(a).string().stripWhiteSpace().lower();
if( type.compare("text/javascript") != 0 &&
type.compare("text/javascript1.0") != 0 &&
type.compare("text/javascript1.1") != 0 &&
type.compare("text/javascript1.2") != 0 &&
type.compare("text/javascript1.3") != 0 &&
type.compare("text/javascript1.4") != 0 &&
type.compare("text/javascript1.5") != 0 &&
type.compare("text/jscript") != 0 &&
type.compare("text/ecmascript") != 0 &&
type.compare("text/livescript") != 0 &&
type.compare("application/x-javascript") != 0 &&
type.compare("application/x-ecmascript") != 0 &&
type.compare("application/javascript") != 0 &&
type.compare("application/ecmascript") != 0 )
javascript = false;
} else if( a ) {
/*
Mozilla 1.5 doesn't accept jscript or ecmascript, but WinIE 6 does.
Mozilla 1.5 accepts javascript1.0, javascript1.4, and javascript1.5, but WinIE 6 accepts only 1.1 - 1.3.
Neither Mozilla 1.5 nor WinIE 6 accept leading or trailing whitespace.
We want to accept all the values that either of these browsers accept, but not other values.
*/
TQString lang = DOMString(a).string();
lang = lang.lower();
if( lang.compare("") != 0 &&
lang.compare("javascript") != 0 &&
lang.compare("javascript1.0") != 0 &&
lang.compare("javascript1.1") != 0 &&
lang.compare("javascript1.2") != 0 &&
lang.compare("javascript1.3") != 0 &&
lang.compare("javascript1.4") != 0 &&
lang.compare("javascript1.5") != 0 &&
lang.compare("ecmascript") != 0 &&
lang.compare("livescript") != 0 &&
lang.compare("jscript") )
javascript = false;
}
}
processToken();
if ( parser->selectMode() && beginTag)
discard = AllDiscard;
switch( tagID ) {
case ID_PRE:
pre = beginTag;
if (beginTag)
discard = LFDiscard;
prePos = 0;
break;
case ID_BR:
prePos = 0;
break;
case ID_SCRIPT:
if (beginTag) {
searchStopper = scriptEnd;
searchStopperLen = 8;
script = true;
parseSpecial(src);
}
else if (tagID < ID_CLOSE_TAG) // Handle <script src="foo"/>
scriptHandler();
break;
case ID_STYLE:
if (beginTag) {
searchStopper = styleEnd;
searchStopperLen = 7;
style = true;
parseSpecial(src);
}
break;
case ID_TEXTAREA:
if(beginTag) {
searchStopper = textareaEnd;
searchStopperLen = 10;
textarea = true;
discard = NoneDiscard;
parseSpecial(src);
}
break;
case ID_TITLE:
if (beginTag) {
searchStopper = titleEnd;
searchStopperLen = 7;
title = true;
parseSpecial(src);
}
break;
case ID_XMP:
if (beginTag) {
searchStopper = xmpEnd;
searchStopperLen = 5;
xmp = true;
parseSpecial(src);
}
break;
case ID_SELECT:
select = beginTag;
break;
case ID_PLAINTEXT:
plaintext = beginTag;
break;
}
return; // Finished parsing tag!
}
} // end switch
}
return;
}
void HTMLTokenizer::addPending()
{
if ( select && !(comment || script))
{
*dest++ = ' ';
}
else if ( textarea )
{
switch(pending) {
case LFPending: *dest++ = '\n'; prePos = 0; break;
case SpacePending: *dest++ = ' '; ++prePos; break;
case TabPending: *dest++ = '\t'; prePos += TAB_SIZE - (prePos % TAB_SIZE); break;
case NonePending:
assert(0);
}
}
else
{
int p;
switch (pending)
{
case SpacePending:
// Insert a breaking space
*dest++ = TQChar(' ');
prePos++;
break;
case LFPending:
*dest = '\n';
dest++;
prePos = 0;
break;
case TabPending:
p = TAB_SIZE - ( prePos % TAB_SIZE );
for ( int x = 0; x < p; x++ )
*dest++ = TQChar(' ');
prePos += p;
break;
case NonePending:
assert(0);
break;
}
}
pending = NonePending;
}
void HTMLTokenizer::write( const TokenizerString &str, bool appendData )
{
#ifdef TOKEN_DEBUG
kdDebug( 6036 ) << this << " Tokenizer::write(\"" << str.toString() << "\"," << appendData << ")" << endl;
#endif
if ( !buffer )
return;
if ( ( m_executingScript && appendData ) || cachedScript.count() ) {
// don't parse; we will do this later
if (pendingQueue.isEmpty())
pendingQueue.push(str);
else if (appendData)
pendingQueue.bottom().append(str);
else
pendingQueue.top().append(str);
return;
}
if ( onHold ) {
src.append(str);
return;
}
if (!src.isEmpty())
src.append(str);
else
setSrc(str);
m_abort = false;
// if (Entity)
// parseEntity(src, dest);
while ( !src.isEmpty() )
{
if ( m_abort )
return;
// do we need to enlarge the buffer?
checkBuffer();
ushort cc = src->tqunicode();
if (skipLF && (cc != '\n'))
skipLF = false;
if (skipLF) {
skipLF = false;
++src;
}
else if ( Entity )
parseEntity( src, dest );
else if ( plaintext )
parseText( src );
else if (script)
parseSpecial(src);
else if (style)
parseSpecial(src);
else if (xmp)
parseSpecial(src);
else if (textarea)
parseSpecial(src);
else if (title)
parseSpecial(src);
else if (comment)
parseComment(src);
else if (server)
parseServer(src);
else if (processingInstruction)
parseProcessingInstruction(src);
else if (tag)
parseTag(src);
else if ( startTag )
{
startTag = false;
bool endTag = false;
switch(cc) {
case '/':
endTag = true;
break;
case '!':
{
// <!-- comment -->
searchCount = 1; // Look for '<!--' sequence to start comment
break;
}
case '?':
{
// xml processing instruction
processingInstruction = true;
tquote = NoQuote;
parseProcessingInstruction(src);
continue;
break;
}
case '%':
if (!brokenServer) {
// <% server stuff, handle as comment %>
server = true;
tquote = NoQuote;
parseServer(src);
continue;
}
// else fall through
default:
{
if( ((cc >= 'a') && (cc <= 'z')) || ((cc >= 'A') && (cc <= 'Z')))
{
// Start of a Start-Tag
}
else
{
// Invalid tag
// Add as is
if (pending)
addPending();
*dest = '<';
dest++;
continue;
}
}
}; // end case
// According to SGML any LF immediately after a starttag, or
// immediately before an endtag should be ignored.
// ### Gecko and MSIE though only ignores LF immediately after
// starttags and only for PRE elements -- asj (28/06-2005)
if ( pending )
if (!select)
addPending();
else
pending = NonePending;
// Cancel unused discards
discard = NoneDiscard;
// if (!endTag) discard = LFDiscard;
processToken();
cBufferPos = 0;
tag = TagName;
parseTag(src);
}
else if ( cc == '&' && !src.escaped())
{
++src;
if ( pending )
addPending();
discard = NoneDiscard;
parseEntity(src, dest, true);
}
else if ( cc == '<' && !src.escaped())
{
tagStartLineno = lineno+src.lineCount();
++src;
discard = NoneDiscard;
startTag = true;
}
else if (( cc == '\n' ) || ( cc == '\r' ))
{
if (discard == SpaceDiscard)
discard = NoneDiscard;
if (discard == LFDiscard) {
// Ignore one LF
discard = NoneDiscard;
}
else if (discard == AllDiscard)
{
// Ignore
}
else
{
if (select && !script) {
pending = LFPending;
} else {
if (pending)
addPending();
pending = LFPending;
}
}
/* Check for MS-DOS CRLF sequence */
if (cc == '\r')
{
skipLF = true;
}
++src;
}
else if (( cc == ' ' ) || ( cc == '\t' ))
{
if(discard == LFDiscard)
discard = NoneDiscard;
if(discard == SpaceDiscard) {
// Ignore one space
discard = NoneDiscard;
}
else if(discard == AllDiscard)
{
// Ignore
}
else {
if (select && !script) {
if (!pending)
pending = SpacePending;
} else {
if (pending)
addPending();
if (cc == ' ')
pending = SpacePending;
else
pending = TabPending;
}
}
++src;
}
else
{
if (pending)
addPending();
discard = NoneDiscard;
if ( pre )
{
prePos++;
}
*dest = *src;
fixUpChar( *dest );
++dest;
++src;
}
}
if (noMoreData && cachedScript.isEmpty() && !m_executingScript)
end(); // this actually causes us to be deleted
}
void HTMLTokenizer::timerEvent( TQTimerEvent *e )
{
if ( e->timerId() == m_autoCloseTimer && cachedScript.isEmpty() ) {
finish();
}
}
void HTMLTokenizer::setAutoClose( bool b ) {
killTimer( m_autoCloseTimer );
m_autoCloseTimer = 0;
if ( b )
m_autoCloseTimer = startTimer(100);
}
void HTMLTokenizer::end()
{
if ( buffer == 0 ) {
emit finishedParsing();
return;
}
// parseTag is using the buffer for different matters
if ( !tag )
processToken();
if(buffer)
KHTML_DELETE_QCHAR_VEC(buffer);
if(scriptCode)
KHTML_DELETE_QCHAR_VEC(scriptCode);
scriptCode = 0;
scriptCodeSize = scriptCodeMaxSize = scriptCodeResync = 0;
buffer = 0;
emit finishedParsing();
}
void HTMLTokenizer::finish()
{
if ( m_autoCloseTimer ) {
killTimer( m_autoCloseTimer );
m_autoCloseTimer = 0;
}
// do this as long as we don't find matching comment ends
while((title || script || comment || server) && scriptCode && scriptCodeSize)
{
// we've found an unmatched comment start
if (comment)
brokenComments = true;
else if (server)
brokenServer = true;
else if (script)
brokenScript = true;
checkScriptBuffer();
scriptCode[ scriptCodeSize ] = 0;
scriptCode[ scriptCodeSize + 1 ] = 0;
int pos;
TQString food;
if (title || style || script)
food.setUnicode(scriptCode, scriptCodeSize);
else if (server) {
food = "<";
food += TQString(scriptCode, scriptCodeSize);
}
else {
pos = TQConstString(scriptCode, scriptCodeSize).string().find('>');
food.setUnicode(scriptCode+pos+1, scriptCodeSize-pos-1); // deep copy
}
KHTML_DELETE_QCHAR_VEC(scriptCode);
scriptCode = 0;
scriptCodeSize = scriptCodeMaxSize = scriptCodeResync = 0;
if (script)
scriptHandler();
comment = title = server = script = false;
if ( !food.isEmpty() )
write(food, true);
}
// this indicates we will not receive any more data... but if we are waiting on
// an external script to load, we can't finish parsing until that is done
noMoreData = true;
if (cachedScript.isEmpty() && !m_executingScript && !onHold)
end(); // this actually causes us to be deleted
}
void HTMLTokenizer::processToken()
{
KJSProxy *jsProxy = view ? view->part()->jScript() : 0L;
if (jsProxy)
jsProxy->setEventHandlerLineno(tagStartLineno+1);
if ( dest > buffer )
{
#if 0
if(currToken.tid) {
qDebug( "unexpected token id: %d, str: *%s*", currToken.tid,TQConstString( buffer,dest-buffer ).string().latin1() );
assert(0);
}
#endif
currToken.text = new DOMStringImpl( buffer, dest - buffer );
currToken.text->ref();
currToken.tid = ID_TEXT;
}
else if(!currToken.tid) {
currToken.reset();
if (jsProxy)
jsProxy->setEventHandlerLineno(lineno+src.lineCount()+1);
return;
}
dest = buffer;
#ifdef TOKEN_DEBUG
TQString name = TQString( getTagName(currToken.tid) );
TQString text;
if(currToken.text)
text = TQConstString(currToken.text->s, currToken.text->l).string();
kdDebug( 6036 ) << "Token --> " << name << " id = " << currToken.tid << endl;
if (currToken.flat)
kdDebug( 6036 ) << "Token is FLAT!" << endl;
if(!text.isNull())
kdDebug( 6036 ) << "text: \"" << text << "\"" << endl;
unsigned long l = currToken.attrs ? currToken.attrs->length() : 0;
if(l) {
kdDebug( 6036 ) << "Attributes: " << l << endl;
for (unsigned long i = 0; i < l; ++i) {
NodeImpl::Id tid = currToken.attrs->idAt(i);
DOMString value = currToken.attrs->valueAt(i);
kdDebug( 6036 ) << " " << tid << " " << parser->doc()->getDocument()->getName(NodeImpl::AttributeId, tid).string()
<< "=\"" << value.string() << "\"" << endl;
}
}
kdDebug( 6036 ) << endl;
#endif
// In some cases, parseToken() can cause javascript code to be executed
// (for example, when setting an attribute that causes an event handler
// to be created). So we need to protect against re-entrancy into the parser
m_executingScript++;
// pass the token over to the parser, the parser DOES NOT delete the token
parser->parseToken(&currToken);
m_executingScript--;
if ( currToken.flat && currToken.tid != ID_TEXT && !parser->noSpaces() )
discard = NoneDiscard;
currToken.reset();
if (jsProxy)
jsProxy->setEventHandlerLineno(1);
}
HTMLTokenizer::~HTMLTokenizer()
{
reset();
delete parser;
}
void HTMLTokenizer::enlargeBuffer(int len)
{
int newsize = kMax(size*2, size+len);
int oldoffs = (dest - buffer);
buffer = KHTML_REALLOC_QCHAR_VEC(buffer, newsize);
dest = buffer + oldoffs;
size = newsize;
}
void HTMLTokenizer::enlargeScriptBuffer(int len)
{
int newsize = kMax(scriptCodeMaxSize*2, scriptCodeMaxSize+len);
scriptCode = KHTML_REALLOC_QCHAR_VEC(scriptCode, newsize);
scriptCodeMaxSize = newsize;
}
void HTMLTokenizer::notifyFinished(CachedObject* /*finishedObj*/)
{
assert(!cachedScript.isEmpty());
bool done = false;
while (!done && cachedScript.head()->isLoaded()) {
kdDebug( 6036 ) << "Finished loading an external script" << endl;
CachedScript* cs = cachedScript.dequeue();
DOMString scriptSource = cs->script();
#ifdef TOKEN_DEBUG
kdDebug( 6036 ) << "External script is:" << endl << scriptSource.string() << endl;
#endif
setSrc(TokenizerString());
// make sure we forget about the script before we execute the new one
// infinite recursion might happen otherwise
TQString cachedScriptUrl( cs->url().string() );
cs->deref(this);
scriptExecution( scriptSource.string(), cachedScriptUrl );
done = cachedScript.isEmpty();
// 'script' is true when we are called synchronously from
// scriptHandler(). In that case scriptHandler() will take care
// of 'scriptOutput'.
if ( !script ) {
while (pendingQueue.count() > 1) {
TokenizerString t = pendingQueue.pop();
pendingQueue.top().prepend( t );
}
if (done) {
write(pendingQueue.pop(), false);
}
// we might be deleted at this point, do not
// access any members.
}
}
}
bool HTMLTokenizer::isWaitingForScripts() const
{
return cachedScript.count();
}
bool HTMLTokenizer::isExecutingScript() const
{
return (m_executingScript > 0);
}
void HTMLTokenizer::setSrc(const TokenizerString& source)
{
lineno += src.lineCount();
src = source;
src.resetLineCount();
}
void HTMLTokenizer::setOnHold(bool _onHold)
{
if (onHold == _onHold) return;
onHold = _onHold;
}