Added abandoned KDE3 version of kchmviewer

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/kchmviewer@1090662 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 1271 insertions, 0 deletions

diff --git a/lib/libchmfile/libchmfileimpl.cpp b/lib/libchmfile/libchmfileimpl.cpp
new file mode 100644
index 0000000..6f1e052
--- /dev/null
+++ b/lib/libchmfile/libchmfileimpl.cpp
@@ -0,0 +1,1271 @@
+/***************************************************************************
+ *   Copyright (C) 2004-2007 by Georgy Yunaev, [email protected]       *
+ *   Portions Copyright (C) 2003  Razvan Cojocaru <[email protected]>       *  
+ *   Please do not use email address above for bug reports; see            *
+ *   the README file                                                       *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program 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 General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.             *
+ ***************************************************************************/
+
+#include <sys/types.h>
+
+#include <qcursor.h>
+#include <qfile.h>
+#include <qapplication.h>
+
+#include "config.h"
+#include "chm_lib.h"
+#include "bitfiddle.h"
+#include "libchmfile.h"
+#include "libchmurlfactory.h"
+#include "libchmfileimpl.h"
+
+// Big-enough buffer size for use with various routines.
+#define BUF_SIZE 4096
+#define COMMON_BUF_LEN 1025
+
+#define TOPICS_ENTRY_LEN 16
+#define URLTBL_ENTRY_LEN 12
+
+//#define DEBUGPARSER(A)	qDebug A
+#define DEBUGPARSER(A)	;
+
+class KCHMShowWaitCursor
+{
+	public:
+		KCHMShowWaitCursor () { QApplication::setOverrideCursor( QCursor(Qt::WaitCursor) ); }
+		~KCHMShowWaitCursor () { QApplication::restoreOverrideCursor(); }
+};
+
+
+LCHMFileImpl::LCHMFileImpl( )
+{
+	m_chmFile = NULL;
+	m_home = m_filename = m_home = m_topicsFile = m_indexFile = m_font = QString::null;
+	m_entityDecodeMap.clear();
+	m_textCodec = 0;
+	m_textCodecForSpecialFiles = 0;
+	m_detectedLCID = 0;
+	m_currentEncoding = 0;
+}
+
+
+LCHMFileImpl::~ LCHMFileImpl( )
+{
+	closeAll();
+}
+
+
+bool LCHMFileImpl::loadFile( const QString & archiveName )
+{
+	QString filename;
+			
+	// If the file has a file:// prefix, remove it
+	if ( archiveName.startsWith( "file://" ) )
+		filename = archiveName.mid( 7 ); // strip it
+	else
+		filename = archiveName;
+	
+	if( m_chmFile )
+		closeAll();
+
+	m_chmFile = chm_open( QFile::encodeName(filename) );
+	
+	if ( m_chmFile == NULL )
+		return false;
+
+	m_filename = filename;
+	
+	// Reset encoding
+	m_textCodec = 0;
+	m_textCodecForSpecialFiles = 0;
+	m_currentEncoding = 0;
+	
+	// Get information from /#WINDOWS and /#SYSTEM files (encoding, title, context file and so)
+	// and guess the encoding
+	getInfoFromWindows();
+	getInfoFromSystem();
+	guessTextEncoding();
+
+	// Check whether the search tables are present
+	if ( ResolveObject("/#TOPICS", &m_chmTOPICS)
+			&& ResolveObject("/#STRINGS", &m_chmSTRINGS)
+			&& ResolveObject("/#URLTBL", &m_chmURLTBL)
+			&& ResolveObject("/#URLSTR", &m_chmURLSTR) )
+	{
+		m_lookupTablesValid = true;
+		fillTopicsUrlMap();
+	}
+	else
+		m_lookupTablesValid = false;
+
+	if ( m_lookupTablesValid && ResolveObject ("/$FIftiMain", &m_chmFIftiMain) )
+		m_searchAvailable = true;
+	else
+		m_searchAvailable = false;
+	
+	return true;
+}
+
+
+void LCHMFileImpl::closeAll( )
+{
+	if ( m_chmFile == NULL )
+		return;
+
+	chm_close( m_chmFile );
+	
+	m_chmFile = NULL;
+	m_home = m_filename = m_home = m_topicsFile = m_indexFile = m_font = QString::null;
+	m_entityDecodeMap.clear();
+	m_textCodec = 0;
+	m_textCodecForSpecialFiles = 0;
+	m_detectedLCID = 0;
+	m_currentEncoding = 0;
+}
+
+
+QString LCHMFileImpl::decodeEntity( const QString & entity )
+{
+	// Set up m_entityDecodeMap characters according to current textCodec
+	if ( m_entityDecodeMap.isEmpty() )
+	{
+		m_entityDecodeMap["AElig"]	= encodeWithCurrentCodec ("\306"); // capital AE diphthong (ligature)
+		m_entityDecodeMap["Aacute"]	= encodeWithCurrentCodec ("\301"); // capital A, acute accent
+		m_entityDecodeMap["Acirc"]	= encodeWithCurrentCodec ("\302"); // capital A, circumflex accent
+		m_entityDecodeMap["Agrave"]	= encodeWithCurrentCodec ("\300"); // capital A, grave accent
+		m_entityDecodeMap["Aring"]	= encodeWithCurrentCodec ("\305"); // capital A, ring
+		m_entityDecodeMap["Atilde"]	= encodeWithCurrentCodec ("\303"); // capital A, tilde
+		m_entityDecodeMap["Auml"]	= encodeWithCurrentCodec ("\304"); // capital A, dieresis or umlaut mark
+		m_entityDecodeMap["Ccedil"]	= encodeWithCurrentCodec ("\307"); // capital C, cedilla
+		m_entityDecodeMap["Dstrok"]	= encodeWithCurrentCodec ("\320"); // whatever
+		m_entityDecodeMap["ETH"]	= encodeWithCurrentCodec ("\320"); // capital Eth, Icelandic
+		m_entityDecodeMap["Eacute"]	= encodeWithCurrentCodec ("\311"); // capital E, acute accent
+		m_entityDecodeMap["Ecirc"]	= encodeWithCurrentCodec ("\312"); // capital E, circumflex accent
+		m_entityDecodeMap["Egrave"]	= encodeWithCurrentCodec ("\310"); // capital E, grave accent
+		m_entityDecodeMap["Euml"]	= encodeWithCurrentCodec ("\313"); // capital E, dieresis or umlaut mark
+		m_entityDecodeMap["Iacute"]	= encodeWithCurrentCodec ("\315"); // capital I, acute accent
+		m_entityDecodeMap["Icirc"]	= encodeWithCurrentCodec ("\316"); // capital I, circumflex accent
+		m_entityDecodeMap["Igrave"]	= encodeWithCurrentCodec ("\314"); // capital I, grave accent
+		m_entityDecodeMap["Iuml"]	= encodeWithCurrentCodec ("\317"); // capital I, dieresis or umlaut mark
+		m_entityDecodeMap["Ntilde"]	= encodeWithCurrentCodec ("\321"); // capital N, tilde
+		m_entityDecodeMap["Oacute"]	= encodeWithCurrentCodec ("\323"); // capital O, acute accent
+		m_entityDecodeMap["Ocirc"]	= encodeWithCurrentCodec ("\324"); // capital O, circumflex accent
+		m_entityDecodeMap["Ograve"]	= encodeWithCurrentCodec ("\322"); // capital O, grave accent
+		m_entityDecodeMap["Oslash"]	= encodeWithCurrentCodec ("\330"); // capital O, slash
+		m_entityDecodeMap["Otilde"]	= encodeWithCurrentCodec ("\325"); // capital O, tilde
+		m_entityDecodeMap["Ouml"]	= encodeWithCurrentCodec ("\326"); // capital O, dieresis or umlaut mark
+		m_entityDecodeMap["THORN"]	= encodeWithCurrentCodec ("\336"); // capital THORN, Icelandic
+		m_entityDecodeMap["Uacute"]	= encodeWithCurrentCodec ("\332"); // capital U, acute accent
+		m_entityDecodeMap["Ucirc"]	= encodeWithCurrentCodec ("\333"); // capital U, circumflex accent
+		m_entityDecodeMap["Ugrave"]	= encodeWithCurrentCodec ("\331"); // capital U, grave accent
+		m_entityDecodeMap["Uuml"]	= encodeWithCurrentCodec ("\334"); // capital U, dieresis or umlaut mark
+		m_entityDecodeMap["Yacute"]	= encodeWithCurrentCodec ("\335"); // capital Y, acute accent
+		m_entityDecodeMap["OElig"]	= encodeWithCurrentCodec ("\338"); // capital Y, acute accent
+		m_entityDecodeMap["oelig"]	= encodeWithCurrentCodec ("\339"); // capital Y, acute accent
+						
+		m_entityDecodeMap["aacute"]	= encodeWithCurrentCodec ("\341"); // small a, acute accent
+		m_entityDecodeMap["acirc"]	= encodeWithCurrentCodec ("\342"); // small a, circumflex accent
+		m_entityDecodeMap["aelig"]	= encodeWithCurrentCodec ("\346"); // small ae diphthong (ligature)
+		m_entityDecodeMap["agrave"]	= encodeWithCurrentCodec ("\340"); // small a, grave accent
+		m_entityDecodeMap["aring"]	= encodeWithCurrentCodec ("\345"); // small a, ring
+		m_entityDecodeMap["atilde"]	= encodeWithCurrentCodec ("\343"); // small a, tilde
+		m_entityDecodeMap["auml"]	= encodeWithCurrentCodec ("\344"); // small a, dieresis or umlaut mark
+		m_entityDecodeMap["ccedil"]	= encodeWithCurrentCodec ("\347"); // small c, cedilla
+		m_entityDecodeMap["eacute"]	= encodeWithCurrentCodec ("\351"); // small e, acute accent
+		m_entityDecodeMap["ecirc"]	= encodeWithCurrentCodec ("\352"); // small e, circumflex accent
+		m_entityDecodeMap["Scaron"]	= encodeWithCurrentCodec ("\352"); // small e, circumflex accent
+		m_entityDecodeMap["egrave"]	= encodeWithCurrentCodec ("\350"); // small e, grave accent
+		m_entityDecodeMap["eth"]	= encodeWithCurrentCodec ("\360"); // small eth, Icelandic
+		m_entityDecodeMap["euml"]	= encodeWithCurrentCodec ("\353"); // small e, dieresis or umlaut mark
+		m_entityDecodeMap["iacute"]	= encodeWithCurrentCodec ("\355"); // small i, acute accent
+		m_entityDecodeMap["icirc"]	= encodeWithCurrentCodec ("\356"); // small i, circumflex accent
+		m_entityDecodeMap["igrave"]	= encodeWithCurrentCodec ("\354"); // small i, grave accent
+		m_entityDecodeMap["iuml"]	= encodeWithCurrentCodec ("\357"); // small i, dieresis or umlaut mark
+		m_entityDecodeMap["ntilde"]	= encodeWithCurrentCodec ("\361"); // small n, tilde
+		m_entityDecodeMap["oacute"]	= encodeWithCurrentCodec ("\363"); // small o, acute accent
+		m_entityDecodeMap["ocirc"]	= encodeWithCurrentCodec ("\364"); // small o, circumflex accent
+		m_entityDecodeMap["ograve"]	= encodeWithCurrentCodec ("\362"); // small o, grave accent
+		m_entityDecodeMap["oslash"]	= encodeWithCurrentCodec ("\370"); // small o, slash
+		m_entityDecodeMap["otilde"]	= encodeWithCurrentCodec ("\365"); // small o, tilde
+		m_entityDecodeMap["ouml"]	= encodeWithCurrentCodec ("\366"); // small o, dieresis or umlaut mark
+		m_entityDecodeMap["szlig"]	= encodeWithCurrentCodec ("\337"); // small sharp s, German (sz ligature)
+		m_entityDecodeMap["thorn"]	= encodeWithCurrentCodec ("\376"); // small thorn, Icelandic
+		m_entityDecodeMap["uacute"]	= encodeWithCurrentCodec ("\372"); // small u, acute accent
+		m_entityDecodeMap["ucirc"]	= encodeWithCurrentCodec ("\373"); // small u, circumflex accent
+		m_entityDecodeMap["ugrave"]	= encodeWithCurrentCodec ("\371"); // small u, grave accent
+		m_entityDecodeMap["uuml"]	= encodeWithCurrentCodec ("\374"); // small u, dieresis or umlaut mark
+		m_entityDecodeMap["yacute"]	= encodeWithCurrentCodec ("\375"); // small y, acute accent
+		m_entityDecodeMap["yuml"]	= encodeWithCurrentCodec ("\377"); // small y, dieresis or umlaut mark
+	
+		m_entityDecodeMap["iexcl"]	= encodeWithCurrentCodec ("\241");
+		m_entityDecodeMap["cent"]	= encodeWithCurrentCodec ("\242");
+		m_entityDecodeMap["pound"]	= encodeWithCurrentCodec ("\243");
+		m_entityDecodeMap["curren"]	= encodeWithCurrentCodec ("\244");
+		m_entityDecodeMap["yen"]	= encodeWithCurrentCodec ("\245");
+		m_entityDecodeMap["brvbar"]	= encodeWithCurrentCodec ("\246");
+		m_entityDecodeMap["sect"]	= encodeWithCurrentCodec ("\247");
+		m_entityDecodeMap["uml"]	= encodeWithCurrentCodec ("\250");
+		m_entityDecodeMap["ordf"]	= encodeWithCurrentCodec ("\252");
+		m_entityDecodeMap["laquo"]	= encodeWithCurrentCodec ("\253");
+		m_entityDecodeMap["not"]	= encodeWithCurrentCodec ("\254");
+		m_entityDecodeMap["shy"]	= encodeWithCurrentCodec ("\255");
+		m_entityDecodeMap["macr"]	= encodeWithCurrentCodec ("\257");
+		m_entityDecodeMap["deg"]	= encodeWithCurrentCodec ("\260");
+		m_entityDecodeMap["plusmn"]	= encodeWithCurrentCodec ("\261");
+		m_entityDecodeMap["sup1"]	= encodeWithCurrentCodec ("\271");
+		m_entityDecodeMap["sup2"]	= encodeWithCurrentCodec ("\262");
+		m_entityDecodeMap["sup3"]	= encodeWithCurrentCodec ("\263");
+		m_entityDecodeMap["acute"]	= encodeWithCurrentCodec ("\264");
+		m_entityDecodeMap["micro"]	= encodeWithCurrentCodec ("\265");
+		m_entityDecodeMap["para"]	= encodeWithCurrentCodec ("\266");
+		m_entityDecodeMap["middot"]	= encodeWithCurrentCodec ("\267");
+		m_entityDecodeMap["cedil"]	= encodeWithCurrentCodec ("\270");
+		m_entityDecodeMap["ordm"]	= encodeWithCurrentCodec ("\272");
+		m_entityDecodeMap["raquo"]	= encodeWithCurrentCodec ("\273");
+		m_entityDecodeMap["frac14"]	= encodeWithCurrentCodec ("\274");
+		m_entityDecodeMap["frac12"]	= encodeWithCurrentCodec ("\275");
+		m_entityDecodeMap["frac34"]	= encodeWithCurrentCodec ("\276");
+		m_entityDecodeMap["iquest"]	= encodeWithCurrentCodec ("\277");
+		m_entityDecodeMap["times"]	= encodeWithCurrentCodec ("\327");
+		m_entityDecodeMap["divide"]	= encodeWithCurrentCodec ("\367");
+				
+		m_entityDecodeMap["copy"]	= encodeWithCurrentCodec ("\251"); // copyright sign
+		m_entityDecodeMap["reg"]	= encodeWithCurrentCodec ("\256"); // registered sign
+		m_entityDecodeMap["nbsp"]	= encodeWithCurrentCodec ("\240"); // non breaking space
+
+		m_entityDecodeMap["fnof"]	= QChar((unsigned short) 402);
+				
+		m_entityDecodeMap["Delta"]	= QChar((unsigned short) 916);
+		m_entityDecodeMap["Pi"]	= QChar((unsigned short) 928);
+		m_entityDecodeMap["Sigma"]	= QChar((unsigned short) 931);
+		
+		m_entityDecodeMap["beta"]	= QChar((unsigned short) 946);
+		m_entityDecodeMap["gamma"]	= QChar((unsigned short) 947);
+		m_entityDecodeMap["delta"]	= QChar((unsigned short) 948);
+		m_entityDecodeMap["eta"]	= QChar((unsigned short) 951);
+		m_entityDecodeMap["theta"]	= QChar((unsigned short) 952);
+		m_entityDecodeMap["lambda"]	= QChar((unsigned short) 955);
+		m_entityDecodeMap["mu"]	= QChar((unsigned short) 956);
+		m_entityDecodeMap["nu"]	= QChar((unsigned short) 957);
+		m_entityDecodeMap["pi"]	= QChar((unsigned short) 960);
+		m_entityDecodeMap["rho"]	= QChar((unsigned short) 961);
+		
+		m_entityDecodeMap["lsquo"]	= QChar((unsigned short) 8216);
+		m_entityDecodeMap["rsquo"]	= QChar((unsigned short) 8217);
+		m_entityDecodeMap["rdquo"]	= QChar((unsigned short) 8221);
+		m_entityDecodeMap["bdquo"]	= QChar((unsigned short) 8222);
+		m_entityDecodeMap["trade"]  = QChar((unsigned short) 8482);
+		m_entityDecodeMap["ldquo"]  = QChar((unsigned short) 8220);
+		m_entityDecodeMap["ndash"]  = QChar((unsigned short) 8211);
+		m_entityDecodeMap["mdash"]  = QChar((unsigned short) 8212);
+		m_entityDecodeMap["bull"]  = QChar((unsigned short) 8226);
+		m_entityDecodeMap["hellip"]  = QChar((unsigned short) 8230);
+		m_entityDecodeMap["emsp"]  = QChar((unsigned short) 8195);
+		m_entityDecodeMap["rarr"]  = QChar((unsigned short) 8594);
+		m_entityDecodeMap["rArr"]  = QChar((unsigned short) 8658);
+		m_entityDecodeMap["crarr"]  = QChar((unsigned short) 8629);
+		m_entityDecodeMap["le"]  = QChar((unsigned short) 8804);
+		m_entityDecodeMap["ge"]  = QChar((unsigned short) 8805);
+		m_entityDecodeMap["lte"]  = QChar((unsigned short) 8804); // wrong, but used somewhere
+		m_entityDecodeMap["gte"]  = QChar((unsigned short) 8805); // wrong, but used somewhere
+		m_entityDecodeMap["dagger"]  = QChar((unsigned short) 8224);
+		m_entityDecodeMap["Dagger"]  = QChar((unsigned short) 8225);
+		m_entityDecodeMap["euro"]  = QChar((unsigned short) 8364);
+		m_entityDecodeMap["asymp"]  = QChar((unsigned short) 8776);
+		m_entityDecodeMap["isin"]  = QChar((unsigned short) 8712);
+		m_entityDecodeMap["notin"]  = QChar((unsigned short) 8713);
+		m_entityDecodeMap["prod"]  = QChar((unsigned short) 8719);
+		m_entityDecodeMap["ne"]  = QChar((unsigned short) 8800);
+				
+		m_entityDecodeMap["amp"]	= "&";	// ampersand
+		m_entityDecodeMap["gt"] = ">";	// greater than
+		m_entityDecodeMap["lt"] = "<"; 	// less than
+		m_entityDecodeMap["quot"] = "\""; // double quote
+		m_entityDecodeMap["apos"] = "'"; 	// single quote
+		m_entityDecodeMap["frasl"]  = "/";
+		m_entityDecodeMap["minus"]  = "-";
+		m_entityDecodeMap["oplus"] = "+";
+		m_entityDecodeMap["Prime"] = "\"";
+	}
+
+	// If entity is an ASCII code like &#12349; - just decode it
+	if ( entity[0] == '#' )
+	{
+		bool valid;
+		unsigned int ascode = entity.mid(1).toUInt( &valid );
+						
+		if ( !valid )
+		{
+			qWarning ( "LCHMFileImpl::decodeEntity: could not decode HTML entity '%s'", entity.ascii() );
+			return QString::null;
+		}
+
+		return (QString) (QChar( ascode ));
+	}
+	else
+	{
+		QMap<QString, QString>::const_iterator it = m_entityDecodeMap.find( entity );
+
+		if ( it == m_entityDecodeMap.end() )
+		{
+			qWarning ("LCHMFileImpl::decodeEntity: could not decode HTML entity '%s'", entity.ascii());
+			return QString::null;
+		}
+		
+		return *it;
+	}
+}
+
+
+inline int LCHMFileImpl::findStringInQuotes (const QString& tag, int offset, QString& value, bool firstquote, bool decodeentities)
+{
+	int qbegin = tag.find ('"', offset);
+	
+	if ( qbegin == -1 )
+		qFatal ("LCHMFileImpl::findStringInQuotes: cannot find first quote in <param> tag: '%s'", tag.ascii());
+
+	int qend = firstquote ? tag.find ('"', qbegin + 1) : tag.findRev ('"');
+
+	if ( qend == -1 || qend <= qbegin )
+		qFatal ("LCHMFileImpl::findStringInQuotes: cannot find last quote in <param> tag: '%s'", tag.ascii());
+
+	// If we do not need to decode HTML entities, just return.
+	if ( decodeentities )
+	{
+		QString htmlentity = QString::null;
+		bool fill_entity = false;
+	
+		value.reserve (qend - qbegin); // to avoid multiple memory allocations
+	
+		for ( int i = qbegin + 1; i < qend; i++ )
+		{
+			if ( !fill_entity )
+			{
+				if ( tag[i] == '&' ) // HTML entity starts
+					fill_entity = true;
+				else
+					value.append (tag[i]);
+			}
+			else
+			{
+				if ( tag[i] == ';' ) // HTML entity ends
+				{
+					// If entity is an ASCII code, just decode it
+					QString decode = decodeEntity( htmlentity );
+					
+					if ( decode.isNull() )
+						break;
+					
+					value.append ( decode );
+					htmlentity = QString::null;
+					fill_entity = false;
+				}
+				else
+					htmlentity.append (tag[i]);
+			}
+		}
+	}
+	else
+		value = tag.mid (qbegin + 1, qend - qbegin - 1);
+
+	return qend + 1;
+}
+
+
+bool LCHMFileImpl::searchWord (const QString& text, 
+							   bool wholeWords, 
+		   					   bool titlesOnly, 
+			                   LCHMSearchProgressResults& results,  
+					           bool phrase_search)
+{
+	bool partial = false;
+
+	if ( text.isEmpty() || !m_searchAvailable )
+		return false;
+
+	QString searchword = (QString) convertSearchWord (text);
+
+#define FTS_HEADER_LEN 0x32
+	unsigned char header[FTS_HEADER_LEN];
+
+	if ( RetrieveObject (&m_chmFIftiMain, header, 0, FTS_HEADER_LEN) == 0 )
+		return false;
+	
+	unsigned char doc_index_s = header[0x1E], doc_index_r = header[0x1F];
+	unsigned char code_count_s = header[0x20], code_count_r = header[0x21];
+	unsigned char loc_codes_s = header[0x22], loc_codes_r = header[0x23];
+
+	if(doc_index_s != 2 || code_count_s != 2 || loc_codes_s != 2)
+	{
+		// Don't know how to use values other than 2 yet. Maybe next chmspec.
+		return false;
+	}
+
+	unsigned char* cursor32 = header + 0x14;
+	u_int32_t node_offset = UINT32ARRAY(cursor32);
+
+	cursor32 = header + 0x2e;
+	u_int32_t node_len = UINT32ARRAY(cursor32);
+
+	unsigned char* cursor16 = header + 0x18;
+	u_int16_t tree_depth = UINT16ARRAY(cursor16);
+
+	unsigned char word_len, pos;
+	QString word;
+	u_int32_t i = sizeof(u_int16_t);
+	u_int16_t free_space;
+
+	QMemArray<unsigned char> buffer(node_len);
+
+	node_offset = GetLeafNodeOffset (searchword, node_offset, node_len, tree_depth);
+
+	if ( !node_offset )
+		return false;
+
+	do
+	{
+		// got a leaf node here.
+		if ( RetrieveObject (&m_chmFIftiMain, buffer.data(), node_offset, node_len) == 0 )
+			return false;
+
+		cursor16 = buffer.data() + 6;
+		free_space = UINT16ARRAY(cursor16);
+
+		i = sizeof(u_int32_t) + sizeof(u_int16_t) + sizeof(u_int16_t);
+		u_int64_t wlc_count, wlc_size;
+		u_int32_t wlc_offset;
+
+		while (i < node_len - free_space)
+		{
+			word_len = *(buffer.data() + i);
+			pos = *(buffer.data() + i + 1);
+
+			char *wrd_buf = new char[word_len];
+			memcpy (wrd_buf, buffer.data() + i + 2, word_len - 1);
+			wrd_buf[word_len - 1] = 0;
+
+			if ( pos == 0 )
+				word = wrd_buf;
+			else
+				word = word.mid (0, pos) + wrd_buf;
+
+			delete[] wrd_buf;
+
+			i += 2 + word_len;
+			unsigned char title = *(buffer.data() + i - 1);
+
+			size_t encsz;
+			wlc_count = be_encint (buffer.data() + i, encsz);
+			i += encsz;
+		
+			cursor32 = buffer.data() + i;
+			wlc_offset = UINT32ARRAY(cursor32);
+
+			i += sizeof(u_int32_t) + sizeof(u_int16_t);
+			wlc_size =  be_encint (buffer.data() + i, encsz);
+			i += encsz;
+
+			cursor32 = buffer.data();
+			node_offset = UINT32ARRAY(cursor32);
+		
+			if ( !title && titlesOnly )
+				continue;
+
+			if ( wholeWords && searchword == word )
+				return ProcessWLC(wlc_count, wlc_size,
+								  wlc_offset, doc_index_s,
+								  doc_index_r,code_count_s,
+								  code_count_r, loc_codes_s,
+								  loc_codes_r, results, phrase_search);
+
+			if ( !wholeWords )
+			{
+				if ( word.startsWith (searchword))
+				{
+					partial = true;
+					
+					ProcessWLC(wlc_count, wlc_size,
+							   wlc_offset, doc_index_s,
+		  					   doc_index_r,code_count_s,
+							   code_count_r, loc_codes_s,
+ 							   loc_codes_r, results, phrase_search);
+
+				}
+				else if ( QString::compare (searchword, word.mid(0, searchword.length())) < -1 )
+					break;
+			}
+		}	
+	}
+	while ( !wholeWords && word.startsWith (searchword) && node_offset );
+	
+	return partial;
+}
+
+
+bool LCHMFileImpl::ResolveObject(const QString& fileName, chmUnitInfo *ui) const
+{
+	return m_chmFile != NULL 
+			&& ::chm_resolve_object(m_chmFile, fileName.ascii(), ui) ==
+			CHM_RESOLVE_SUCCESS;
+}
+
+
+size_t LCHMFileImpl::RetrieveObject(const chmUnitInfo *ui, unsigned char *buffer,
+								LONGUINT64 fileOffset, LONGINT64 bufferSize) const
+{
+#if USE_BUILTIN_CHMLIB
+	return ::chm_retrieve_object(m_chmFile, ui, buffer, 
+								 fileOffset, bufferSize);
+#else
+	return ::chm_retrieve_object(m_chmFile, const_cast<chmUnitInfo*>(ui),
+								 buffer, fileOffset, bufferSize);
+#endif
+}
+
+
+inline u_int32_t LCHMFileImpl::GetLeafNodeOffset(const QString& text,
+											 u_int32_t initialOffset,
+			u_int32_t buffSize,
+   u_int16_t treeDepth)
+{
+	u_int32_t test_offset = 0;
+	unsigned char* cursor16, *cursor32;
+	unsigned char word_len, pos;
+	u_int32_t i = sizeof(u_int16_t);
+	QMemArray<unsigned char> buffer(buffSize);
+	QString word;
+	
+	while(--treeDepth)
+	{
+		if ( initialOffset == test_offset )
+			return 0;
+
+		test_offset = initialOffset;
+		if ( RetrieveObject (&m_chmFIftiMain, buffer.data(), initialOffset, buffSize) == 0 )
+			return 0;
+
+		cursor16 = buffer.data();
+		u_int16_t free_space = UINT16ARRAY(cursor16);
+
+		while (i < buffSize - free_space )
+		{
+			word_len = *(buffer.data() + i);
+			pos = *(buffer.data() + i + 1);
+
+			char *wrd_buf = new char[word_len];
+			memcpy ( wrd_buf, buffer.data() + i + 2, word_len - 1 );
+			wrd_buf[word_len - 1] = 0;
+
+			if ( pos == 0 )
+				word = wrd_buf;
+			else
+				word = word.mid(0, pos) + wrd_buf;
+
+			delete[] wrd_buf;
+
+			if ( text <= word )
+			{
+				cursor32 = buffer.data() + i + word_len + 1;
+				initialOffset = UINT32ARRAY(cursor32);
+				break;
+			}
+
+			i += word_len + sizeof(unsigned char) +
+					sizeof(u_int32_t) + sizeof(u_int16_t);
+		}
+	}
+
+	if ( initialOffset == test_offset )
+		return 0;
+
+	return initialOffset;
+}
+
+
+inline bool LCHMFileImpl::ProcessWLC (u_int64_t wlc_count, u_int64_t wlc_size,
+								    u_int32_t wlc_offset, unsigned char ds,
+		  							unsigned char dr, unsigned char cs,
+									unsigned char cr, unsigned char ls,
+ 									unsigned char lr,
+ 									LCHMSearchProgressResults& results,
+ 									bool phrase_search)
+{
+	int wlc_bit = 7;
+	u_int64_t index = 0, count;
+	size_t length, off = 0;
+	QMemArray<unsigned char> buffer (wlc_size);
+	unsigned char *cursor32;
+
+	unsigned char entry[TOPICS_ENTRY_LEN];
+	unsigned char combuf[13];
+
+	if ( RetrieveObject (&m_chmFIftiMain, buffer.data(), wlc_offset, wlc_size) == 0 )
+		return false;
+
+	for ( u_int64_t i = 0; i < wlc_count; ++i )
+	{
+		if ( wlc_bit != 7 )
+		{
+			++off;
+			wlc_bit = 7;
+		}
+
+		index += sr_int (buffer.data() + off, &wlc_bit, ds, dr, length);
+		off += length;
+
+		if ( RetrieveObject (&m_chmTOPICS, entry, index * 16, TOPICS_ENTRY_LEN) == 0 )
+			return false;
+
+		LCHMSearchProgressResult progres;
+
+		cursor32 = entry + 4;
+		progres.titleoff = UINT32ARRAY(cursor32);
+
+		cursor32 = entry + 8;
+		progres.urloff = UINT32ARRAY(cursor32);
+
+		if ( RetrieveObject (&m_chmURLTBL, combuf, progres.urloff, 12) == 0 )
+			return false;
+
+		cursor32 = combuf + 8;
+		progres.urloff = UINT32ARRAY (cursor32);
+
+		count = sr_int (buffer.data() + off, &wlc_bit, cs, cr, length);
+		off += length;
+
+		if ( phrase_search )
+			progres.offsets.reserve (count);
+		
+		for (u_int64_t j = 0; j < count; ++j)
+		{
+			u_int64_t lcode = sr_int (buffer.data() + off, &wlc_bit, ls, lr, length);
+			off += length;
+			
+			if ( phrase_search )
+				progres.offsets.push_back (lcode);
+		}
+		
+		results.push_back (progres);
+	}
+
+	return true;
+}
+
+
+bool LCHMFileImpl::getInfoFromWindows()
+{
+#define WIN_HEADER_LEN 0x08
+	unsigned char buffer[BUF_SIZE];
+	unsigned int factor;
+	chmUnitInfo ui;
+	long size = 0;
+
+	if ( ResolveObject("/#WINDOWS", &ui) )
+	{
+		if ( !RetrieveObject(&ui, buffer, 0, WIN_HEADER_LEN) )
+			return false;
+
+		u_int32_t entries = get_int32_le( (u_int32_t *)(buffer) );
+		u_int32_t entry_size = get_int32_le( (u_int32_t *)(buffer + 0x04) );
+		
+		QByteArray uptr(entries * entry_size);
+		unsigned char* raw = (unsigned char*) uptr.data();
+		
+		if ( !RetrieveObject (&ui, raw, 8, entries * entry_size) )
+			return false;
+
+		if( !ResolveObject ("/#STRINGS", &ui) )
+			return false;
+
+		for ( u_int32_t i = 0; i < entries; ++i )
+		{
+			u_int32_t offset = i * entry_size;
+			
+			u_int32_t off_title = get_int32_le( (u_int32_t *)(raw + offset + 0x14) );
+			u_int32_t off_home = get_int32_le( (u_int32_t *)(raw + offset + 0x68) );
+			u_int32_t off_hhc = get_int32_le( (u_int32_t *)(raw + offset + 0x60) );
+			u_int32_t off_hhk = get_int32_le( (u_int32_t *)(raw + offset + 0x64) );
+
+			factor = off_title / 4096;
+
+			if ( size == 0 ) 
+				size = RetrieveObject(&ui, buffer, factor * 4096, BUF_SIZE);
+
+			if ( size && off_title )
+				m_title = QString ((const char*) (buffer + off_title % 4096));
+
+			if ( factor != off_home / 4096)
+			{
+				factor = off_home / 4096;		
+				size = RetrieveObject (&ui, buffer, factor * 4096, BUF_SIZE);
+			}
+			
+			if ( size && off_home )
+				m_home = QString("/") + QString( (const char*) buffer + off_home % 4096);
+
+			if ( factor != off_hhc / 4096)
+			{
+				factor = off_hhc / 4096;
+				size = RetrieveObject(&ui, buffer, factor * 4096, BUF_SIZE);
+			}
+		
+			if ( size && off_hhc )
+				m_topicsFile = QString("/") + QString ((const char*) buffer + off_hhc % 4096);
+
+			if ( factor != off_hhk / 4096)
+			{
+				factor = off_hhk / 4096;
+				size = RetrieveObject (&ui, buffer, factor * 4096, BUF_SIZE);
+			}
+
+			if ( size && off_hhk )
+				m_indexFile = QString("/") + QString((const char*) buffer + off_hhk % 4096);
+		}
+	}
+	return true;
+}
+
+
+
+bool LCHMFileImpl::getInfoFromSystem()
+{
+	unsigned char buffer[BUF_SIZE];
+	chmUnitInfo ui;
+	
+	int index = 0;
+	unsigned char* cursor = NULL, *p;
+	u_int16_t value = 0;
+	long size = 0;
+
+	// Run the first loop to detect the encoding. We need this, because title could be
+	// already encoded in user encoding. Same for file names
+	if ( !ResolveObject ("/#SYSTEM", &ui) )
+		return false;
+
+	// Can we pull BUFF_SIZE bytes of the #SYSTEM file?
+	if ( (size = RetrieveObject (&ui, buffer, 4, BUF_SIZE)) == 0 )
+		return false;
+
+	buffer[size - 1] = 0;
+
+	// First loop to detect the encoding
+	for ( index = 0; index < (size - 1 - (long)sizeof(u_int16_t)) ;)
+	{
+		cursor = buffer + index;
+		value = UINT16ARRAY(cursor);
+
+		switch(value)
+		{
+			case 0:
+				index += 2;
+				cursor = buffer + index;
+			
+				if(m_topicsFile.isEmpty())
+					m_topicsFile = QString("/") + QString((const char*) buffer + index + 2);
+				
+				break;
+			
+			case 1:
+				index += 2;
+				cursor = buffer + index;
+
+				if(m_indexFile.isEmpty())
+					m_indexFile = QString("/") + QString ((const char*)buffer + index + 2);
+				break;
+		
+			case 2:
+				index += 2;
+				cursor = buffer + index;
+				
+				if(m_home.isEmpty() || m_home == "/")
+					m_home = QString("/") + QString ((const char*) buffer + index + 2);
+				break;
+			
+			case 3:
+				index += 2;
+				cursor = buffer + index;
+				m_title = QString((const char*) (buffer + index + 2));
+				break;
+
+			case 4:
+				index += 2;
+				cursor = buffer + index;
+
+				p = buffer + index + 2;
+				m_detectedLCID = (short) (p[0] | (p[1]<<8));
+			
+				break;
+
+			case 6:
+				index += 2;
+				cursor = buffer + index;
+
+				if(m_topicsFile.isEmpty()) {
+					QString topicAttempt = "/", tmp;
+					topicAttempt += QString ((const char*) buffer +index +2);
+
+					tmp = topicAttempt + ".hhc";
+				
+					if ( ResolveObject( tmp, &ui) )
+						m_topicsFile = tmp;
+
+					tmp = topicAttempt + ".hhk";
+				
+					if ( ResolveObject( tmp, &ui) )
+						m_indexFile = tmp;
+				}
+				break;
+
+			case 16:
+				index += 2;
+				cursor = buffer + index;
+
+				m_font = QString ((const char*) buffer + index + 2);
+				break;
+			
+			default:
+				index += 2;
+				cursor = buffer + index;
+		}
+
+		value = UINT16ARRAY(cursor);
+		index += value + 2;
+	}
+	
+	return true;
+}
+
+ 
+QCString LCHMFileImpl::convertSearchWord( const QString & src )
+{
+	static const char * searchwordtable[128] =
+	{
+		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "s", 0, "oe", 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "s", 0, "oe", 0, 0, "y",
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  "a", "a", "a", "a", "a", "a", "ae", "c", "e", "e", "e", "e", "i", "i", "i", "i",
+  "d", "n", "o", "o", "o", "o", "o", 0, "o", "u", "u", "u", "u", "y", "\xDE", "ss",
+  "a", "a", "a", "a", "a", "a", "ae", "c", "e", "e", "e", "e", "i", "i", "i", "i",
+  "o", "n", "o", "o", "o", "o", "o", 0, "o", "u", "u", "u", "u", "y", "\xFE", "y"
+	};
+
+	if ( !m_textCodec )
+		return (QCString) src.lower();
+
+	QCString dest = m_textCodec->fromUnicode (src);
+
+	for ( unsigned int i = 0; i < dest.size(); i++ )
+	{
+		if ( dest[i] & 0x80 )
+		{
+			int index = dest[i] & 0x7F;
+			if ( searchwordtable[index] )
+				dest.replace (i, 1, searchwordtable[index]);
+			else
+				dest.remove (i, 1);
+		}
+	}
+
+	return dest.lower();
+}
+
+
+
+void LCHMFileImpl::getSearchResults( const LCHMSearchProgressResults& tempres, 
+									 QStringList * results, 
+		  							 unsigned int limit_results )
+{
+	unsigned char combuf [COMMON_BUF_LEN];
+	QMap<u_int32_t, u_int32_t> urlsmap;  // used to prevent duplicated urls
+	
+	for ( unsigned int i = 0; i < tempres.size(); i++ )
+	{
+		if ( urlsmap.find (tempres[i].urloff) != urlsmap.end() )
+			continue;
+		
+		urlsmap[tempres[i].urloff] = 1;
+		
+		if ( RetrieveObject (&m_chmURLSTR, combuf, tempres[i].urloff + 8, COMMON_BUF_LEN - 1) == 0 )
+			continue;
+
+		combuf[COMMON_BUF_LEN - 1] = 0;
+		results->push_back( LCHMUrlFactory::makeURLabsoluteIfNeeded( (const char*) combuf ) );
+		
+		if ( --limit_results == 0 )
+			break;
+	}
+}
+
+
+QString LCHMFileImpl::normalizeUrl( const QString & path ) const
+{
+	int pos = path.find ('#');
+	QString fixedpath = pos == -1 ? path : path.left (pos);
+	
+	return LCHMUrlFactory::makeURLabsoluteIfNeeded( fixedpath );
+}
+
+
+/*
+ * FIXME: <OBJECT type="text/sitemap"><param name="Merge" value="hhaxref.chm::/HHOCX_c.hhc"></OBJECT>
+ *  (from htmlhelp.chm)
+*/
+bool LCHMFileImpl::parseFileAndFillArray( const QString & file, QT34VECTOR< LCHMParsedEntry > * data, bool asIndex )
+{
+	QString src;
+	const int MAX_NEST_DEPTH = 256;
+
+	if ( !getFileContentAsString( &src, file ) || src.isEmpty() )
+		return false;
+
+	KCHMShowWaitCursor wc;
+		
+/*
+	// Save the index for debugging purposes
+	QFile outfile( "parsed.htm" );
+	
+	if ( outfile.open( IO_WriteOnly ) )
+	{
+		QTextStream textstream( &outfile );
+		textstream << src;
+		outfile.close();
+	}
+*/
+	
+	unsigned int defaultimagenum = asIndex ? LCHMBookIcons::IMAGE_INDEX : LCHMBookIcons::IMAGE_AUTO;
+	int pos = 0, indent = 0, root_indent_offset = 0;
+	bool in_object = false, root_indent_offset_set = false;
+	
+	LCHMParsedEntry entry;
+	entry.imageid = defaultimagenum;
+	
+	// Split the HHC file by HTML tags
+	int stringlen = src.length();
+	
+	while ( pos < stringlen && (pos = src.find ('<', pos)) != -1 )
+	{
+		int i, word_end = 0;
+		
+		for ( i = ++pos; i < stringlen; i++ )
+		{
+			// If a " or ' is found, skip to the next one.
+			if ( (src[i] == '"' || src[i] == '\'') )
+			{
+				// find where quote ends, either by another quote, or by '>' symbol (some people don't know HTML)
+				int nextpos = src.find (src[i], i+1);
+				if ( nextpos == -1 	&& (nextpos = src.find ('>', i+1)) == -1 )
+				{
+					qWarning ("LCHMFileImpl::ParseHhcAndFillTree: corrupted TOC: %s", src.mid(i).ascii());
+					return false;
+				}
+
+				i =  nextpos;
+			}
+			else if ( src[i] == '>'  )
+				break;
+			else if ( !src[i].isLetterOrNumber() && src[i] != '/' && !word_end )
+				word_end = i;
+		}
+		
+		QString tagword, tag = src.mid (pos, i - pos);
+		 
+		if ( word_end )
+			tagword = src.mid (pos, word_end - pos).lower();
+		else
+			tagword = tag.lower();
+
+		//qDebug ("tag: '%s', tagword: '%s'\n", tag.ascii(), tagword.ascii());
+						
+		// <OBJECT type="text/sitemap"> - a topic entry
+		if ( tagword == "object" && tag.find ("text/sitemap", 0, false) != -1 )
+			in_object = true;
+		else if ( tagword == "/object" && in_object ) 
+		{
+			// a topic entry closed. Add a tree item
+			if ( entry.name )
+			{
+				if ( !root_indent_offset_set )
+				{
+					root_indent_offset_set = true;
+					root_indent_offset = indent;
+					
+					if ( root_indent_offset > 1 )
+						qWarning("CHM has improper index; root indent offset is %d", root_indent_offset);
+				}
+
+				int real_indent = indent - root_indent_offset;
+				
+				entry.indent = real_indent;
+				data->push_back( entry );
+			}
+			else
+			{
+				if ( !entry.urls.isEmpty() )
+					qDebug ("LCHMFileImpl::ParseAndFillTopicsTree: <object> tag with url \"%s\" is parsed, but name is empty.", entry.urls[0].ascii());
+				else
+					qDebug ("LCHMFileImpl::ParseAndFillTopicsTree: <object> tag is parsed, but both name and url are empty.");	
+			}
+
+			entry.name = QString::null;
+			entry.urls.clear();
+			entry.imageid = defaultimagenum;
+			in_object = false;
+		}
+		else if ( tagword == "param" && in_object )
+		{
+			// <param name="Name" value="First Page">
+			int offset; // strlen("param ")
+			QString name_pattern = "name=", value_pattern = "value=";
+			QString pname, pvalue;
+
+			if ( (offset = tag.find (name_pattern, 0, FALSE)) == -1 )
+				qFatal ("LCHMFileImpl::ParseAndFillTopicsTree: bad <param> tag '%s': no name=\n", tag.ascii());
+
+			// offset+5 skips 'name='
+			offset = findStringInQuotes (tag, offset + name_pattern.length(), pname, TRUE, FALSE);
+			pname = pname.lower();
+
+			if ( (offset = tag.find (value_pattern, offset, FALSE)) == -1 )
+				qFatal ("LCHMFileImpl::ParseAndFillTopicsTree: bad <param> tag '%s': no value=\n", tag.ascii());
+
+			// offset+6 skips 'value='
+			findStringInQuotes (tag, offset + value_pattern.length(), pvalue, FALSE, TRUE);
+
+			//qDebug ("<param>: name '%s', value '%s'", pname.ascii(), pvalue.ascii());
+
+			if ( pname == "name" )
+			{
+				// Some help files contain duplicate names, where the second name is empty. Work it around by keeping the first one
+				if ( !pvalue.isEmpty() )
+					entry.name = pvalue;
+			}
+			else if ( pname == "local" )
+			{
+				// Check for URL duplication
+				QString url = LCHMUrlFactory::makeURLabsoluteIfNeeded( pvalue );
+				
+				if ( entry.urls.find( url ) == entry.urls.end() )
+					entry.urls.push_back( url );
+			}
+			else if ( pname == "see also" && asIndex && entry.name != pvalue )
+				entry.urls.push_back (":" + pvalue);
+			else if ( pname == "imagenumber" )
+			{
+				bool bok;
+				int imgnum = pvalue.toInt (&bok);
+	
+				if ( bok && imgnum >= 0 && imgnum < LCHMBookIcons::MAX_BUILTIN_ICONS )
+					entry.imageid = imgnum;
+			}
+		}
+		else if ( tagword == "ul" ) // increase indent level
+		{
+			// Fix for buggy help files		
+			if ( ++indent >= MAX_NEST_DEPTH )
+				qFatal("LCHMFileImpl::ParseAndFillTopicsTree: max nest depth (%d) is reached, error in help file", MAX_NEST_DEPTH);
+
+			// This intended to fix <ul><ul>, which was seen in some buggy chm files,
+			// and brokes rootentry[indent-1] check
+		}
+		else if ( tagword == "/ul" ) // decrease indent level
+		{
+			if ( --indent < root_indent_offset )
+				indent = root_indent_offset;
+			
+			DEBUGPARSER(("</ul>: new intent is %d\n", indent - root_indent_offset));
+		}
+
+		pos = i;	
+	}
+	
+	return true;
+}
+
+
+bool LCHMFileImpl::getFileContentAsBinary( QByteArray * data, const QString & url ) const
+{
+	chmUnitInfo ui;
+
+	if( !ResolveObject( url, &ui ) )
+		return false;
+
+	data->resize( ui.length );
+			
+	if ( RetrieveObject( &ui, (unsigned char*) data->data(), 0, ui.length ) )
+		return true;
+	else
+		return false;
+}
+
+	
+bool LCHMFileImpl::getFileContentAsString( QString * str, const QString & url, bool internal_encoding )
+{
+	QByteArray buf;
+	
+	if ( getFileContentAsBinary( &buf, url ) )
+	{
+		unsigned int length = buf.size();
+		
+		if ( length > 0 )
+		{
+			buf.resize( length + 1 );
+			buf [length] = '\0';
+			
+			*str = internal_encoding ? (QString)((const char*) buf) :  encodeWithCurrentCodec((const char*) buf);
+			return true;
+		}
+	}
+	
+	return false;
+}
+
+
+QString LCHMFileImpl::getTopicByUrl( const QString & url ) const
+{
+	QMap< QString, QString >::const_iterator it = m_url2topics.find( url );
+	
+	if ( it == m_url2topics.end() )
+		return QString::null;
+	
+	return it.data();
+}
+
+
+static int chm_enumerator_callback( struct chmFile*, struct chmUnitInfo *ui, void *context )
+{
+	((QStringList*) context)->push_back( ui->path );
+	return CHM_ENUMERATOR_CONTINUE;
+}
+
+bool LCHMFileImpl::enumerateFiles( QStringList * files )
+{
+	files->clear();
+	return chm_enumerate( m_chmFile, CHM_ENUMERATE_ALL, chm_enumerator_callback, files );
+}
+
+const QPixmap * LCHMFileImpl::getBookIconPixmap( unsigned int imagenum )
+{
+	return m_imagesKeeper.getImage( imagenum );
+}
+
+bool LCHMFileImpl::setCurrentEncoding( const LCHMTextEncoding * encoding )
+{
+	m_currentEncoding = encoding;
+	return changeFileEncoding( encoding->qtcodec );
+}
+
+
+bool LCHMFileImpl::guessTextEncoding( )
+{
+	const LCHMTextEncoding * enc = 0;
+
+	if ( !m_detectedLCID || (enc = lookupByLCID (m_detectedLCID)) == 0 )
+		qFatal ("Could not detect text encoding by LCID");
+	
+	if ( changeFileEncoding (enc->qtcodec) )
+	{
+		m_currentEncoding = enc;
+		return true;
+	}
+	
+	return false;
+}
+
+bool LCHMFileImpl::changeFileEncoding( const char *qtencoding  )
+{
+	// Encoding could be either simple Qt codepage, or set like CP1251/KOI8, which allows to
+	// set up encodings separately for text (first) and internal files (second)
+	const char * p = strchr( qtencoding, '/' );
+	if ( p )
+	{
+		char buf[128]; // much bigger that any encoding possible. No DoS; all encodings are hardcoded.
+		strcpy( buf, qtencoding );
+		buf[p - qtencoding] = '\0';
+		
+		m_textCodec = QTextCodec::codecForName( buf );
+	
+		if ( !m_textCodec )
+		{
+			qWarning( "Could not set up Text Codec for encoding '%s'", buf );
+			return false;
+		}
+		
+		m_textCodecForSpecialFiles = QTextCodec::codecForName( p + 1 );
+	
+		if ( !m_textCodecForSpecialFiles )
+		{
+			qWarning( "Could not set up Text Codec for encoding '%s'", p + 1 );
+			return false;
+		}
+	}
+	else
+	{
+		m_textCodecForSpecialFiles = m_textCodec = QTextCodec::codecForName (qtencoding);
+	
+		if ( !m_textCodec )
+		{
+			qWarning( "Could not set up Text Codec for encoding '%s'", qtencoding );
+			return false;
+		}
+	}
+	
+	m_entityDecodeMap.clear();
+	return true;
+}
+
+
+void LCHMFileImpl::fillTopicsUrlMap()
+{
+	if ( !m_lookupTablesValid )
+		return;
+
+	// Read those tables
+	QByteArray topics( m_chmTOPICS.length ), urltbl( m_chmURLTBL.length ), urlstr( m_chmURLSTR.length ), strings( m_chmSTRINGS.length );
+
+	if ( !RetrieveObject( &m_chmTOPICS, (unsigned char*) topics.data(), 0, m_chmTOPICS.length )
+	|| !RetrieveObject( &m_chmURLTBL, (unsigned char*) urltbl.data(), 0, m_chmURLTBL.length )
+	|| !RetrieveObject( &m_chmURLSTR, (unsigned char*) urlstr.data(), 0, m_chmURLSTR.length )
+	|| !RetrieveObject( &m_chmSTRINGS, (unsigned char*) strings.data(), 0, m_chmSTRINGS.length ) )
+		return;
+	
+	for ( unsigned int i = 0; i < m_chmTOPICS.length; i += TOPICS_ENTRY_LEN )
+	{
+		u_int32_t off_title = get_int32_le( (u_int32_t *)(topics.data() + i + 4) );
+		u_int32_t off_url = get_int32_le( (u_int32_t *)(topics.data() + i + 8) );
+		off_url = get_int32_le( (u_int32_t *)( urltbl.data() + off_url + 8) ) + 8;
+
+		QString url = LCHMUrlFactory::makeURLabsoluteIfNeeded( (const char*) urlstr.data() + off_url );
+
+		if ( off_title < strings.size() )
+			m_url2topics[url] = encodeWithCurrentCodec ( (const char*) strings.data() + off_title );
+		else
+			m_url2topics[url] = "Untitled";
+	}
+}
+
+
+bool LCHMFileImpl::getFileSize(unsigned int * size, const QString & url)
+{
+	chmUnitInfo ui;
+
+	if( !ResolveObject( url, &ui ) )
+		return false;
+
+	*size = ui.length;
+	return true;
+}