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epwing_book.cc
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/* This file is (c) 2014 Abs62
* Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
#include "epwing_book.hh"
#include <QDir>
#include <QTextStream>
#include <QTextDocumentFragment>
#include <QHash>
#include "gddebug.hh"
#include "fsencoding.hh"
#include "audiolink.hh"
#include "wstring.hh"
#include "wstring_qt.hh"
#include "folding.hh"
#include "epwing_charmap.hh"
#if defined( Q_OS_WIN32 ) || defined( Q_OS_MAC )
#define _FILE_OFFSET_BITS 64
#endif
#include <eb/text.h>
#include <eb/appendix.h>
#include <eb/error.h>
#include <eb/binary.h>
#include <eb/font.h>
#define HitsBufferSize 512
namespace Epwing {
void initialize()
{
eb_initialize_library();
}
void finalize()
{
eb_finalize_library();
}
namespace Book {
#define HookFunc(name) \
EB_Error_Code name(EB_Book *, EB_Appendix *, void*, EB_Hook_Code, int, \
const unsigned int*)
HookFunc( hook_newline );
HookFunc( hook_iso8859_1 );
HookFunc( hook_narrow_jisx0208 );
HookFunc( hook_wide_jisx0208 );
HookFunc( hook_gb2312 );
HookFunc( hook_superscript );
HookFunc( hook_subscript );
HookFunc( hook_decoration );
HookFunc( hook_color_image );
HookFunc( hook_gray_image );
HookFunc( hook_mono_image );
HookFunc( hook_wave );
HookFunc( hook_mpeg );
HookFunc( hook_narrow_font );
HookFunc( hook_wide_font );
HookFunc( hook_reference );
const EB_Hook hooks[] = {
{ EB_HOOK_NEWLINE, hook_newline },
{ EB_HOOK_ISO8859_1, hook_iso8859_1 },
{ EB_HOOK_NARROW_JISX0208, hook_narrow_jisx0208 },
{ EB_HOOK_WIDE_JISX0208, hook_wide_jisx0208 },
{ EB_HOOK_GB2312, hook_gb2312 },
{ EB_HOOK_BEGIN_SUBSCRIPT, hook_subscript },
{ EB_HOOK_END_SUBSCRIPT, hook_subscript },
{ EB_HOOK_BEGIN_SUPERSCRIPT, hook_superscript },
{ EB_HOOK_END_SUPERSCRIPT, hook_superscript },
{ EB_HOOK_BEGIN_DECORATION, hook_decoration },
{ EB_HOOK_END_DECORATION, hook_decoration },
{ EB_HOOK_BEGIN_COLOR_BMP, hook_color_image },
{ EB_HOOK_BEGIN_COLOR_JPEG, hook_color_image },
{ EB_HOOK_END_COLOR_GRAPHIC, hook_color_image },
{ EB_HOOK_BEGIN_IN_COLOR_BMP, hook_color_image },
{ EB_HOOK_BEGIN_IN_COLOR_JPEG, hook_color_image },
{ EB_HOOK_END_IN_COLOR_GRAPHIC, hook_color_image },
{ EB_HOOK_BEGIN_MONO_GRAPHIC, hook_mono_image },
{ EB_HOOK_END_MONO_GRAPHIC, hook_mono_image },
{ EB_HOOK_BEGIN_WAVE, hook_wave },
{ EB_HOOK_END_WAVE, hook_wave },
{ EB_HOOK_BEGIN_MPEG, hook_mpeg },
{ EB_HOOK_END_MPEG, hook_mpeg },
{ EB_HOOK_NARROW_FONT, hook_narrow_font },
{ EB_HOOK_WIDE_FONT, hook_wide_font },
{ EB_HOOK_BEGIN_REFERENCE, hook_reference },
{ EB_HOOK_END_REFERENCE, hook_reference },
{ EB_HOOK_NULL, NULL }
};
const EB_Hook refHooks[] = {
{ EB_HOOK_BEGIN_REFERENCE, hook_reference },
{ EB_HOOK_END_REFERENCE, hook_reference },
{ EB_HOOK_NULL, NULL }
};
#define EUC_TO_ASCII_TABLE_START 0xa0
#define EUC_TO_ASCII_TABLE_END 0xff
// Tables from EB library
static const unsigned char euc_a1_to_ascii_table[] = {
0x00, 0x20, 0x00, 0x00, 0x2c, 0x2e, 0x00, 0x3a, /* 0xa0 */
0x3b, 0x3f, 0x21, 0x00, 0x00, 0x00, 0x60, 0x00, /* 0xa8 */
0x5e, 0x7e, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xb0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2d, 0x2f, /* 0xb8 */
0x5c, 0x00, 0x00, 0x7c, 0x00, 0x00, 0x00, 0x27, /* 0xc0 */
0x00, 0x22, 0x28, 0x29, 0x00, 0x00, 0x5b, 0x5d, /* 0xc8 */
0x7b, 0x7d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd0 */
0x00, 0x00, 0x00, 0x00, 0x2b, 0x2d, 0x00, 0x00, /* 0xd8 */
0x00, 0x3d, 0x00, 0x3c, 0x3e, 0x00, 0x00, 0x00, /* 0xe0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x5c, /* 0xe8 */
0x24, 0x00, 0x00, 0x25, 0x23, 0x26, 0x2a, 0x40, /* 0xf0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xf8 */
};
static const unsigned char euc_a3_to_ascii_table[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xa8 */
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 0xb0 */
0x38, 0x39, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xb8 */
0x00, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* 0xc0 */
0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* 0xc8 */
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* 0xd0 */
0x58, 0x59, 0x5a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xd8 */
0x00, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 0xe0 */
0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* 0xe8 */
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* 0xf0 */
0x78, 0x79, 0x7a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xf8 */
};
// Hook functions
EB_Error_Code hook_newline( EB_Book * book, EB_Appendix *, void * ptr,
EB_Hook_Code, int, const unsigned int * )
{
EContainer * container = static_cast< EContainer * >( ptr );
if( container->textOnly )
eb_write_text_byte1( book, '\n' );
else
eb_write_text_string( book, "<br>" );
return EB_SUCCESS;
}
EB_Error_Code hook_iso8859_1( EB_Book * book, EB_Appendix *, void * container,
EB_Hook_Code, int, const unsigned int * argv )
{
EpwingBook * ebook = static_cast< EpwingBook * >( container );
if( ebook->codecISO() )
{
QByteArray b = ebook->codecISO()->toUnicode( (const char *)argv, 1 ).toUtf8();
eb_write_text( book, b.data(), b.size() );
}
return EB_SUCCESS;
}
EB_Error_Code hook_narrow_jisx0208( EB_Book * book, EB_Appendix *,
void * container, EB_Hook_Code, int,
const unsigned int * argv )
{
if( *argv == 0xA1E3 )
eb_write_text_string( book, "<" );
else
if( *argv == 0xA1E4 )
eb_write_text_string( book, ">" );
else
if( *argv == 0xA1F5 )
eb_write_text_string( book, "&" );
else
{
unsigned char buf[ 2 ];
buf[ 0 ] = argv[ 0 ] >> 8;
buf[ 1 ] = argv[ 0 ] & 0xff;
int out_code = 0;
if( buf[ 0 ] == 0xA1 && buf[ 1 ] >= EUC_TO_ASCII_TABLE_START )
out_code = euc_a1_to_ascii_table[ buf[ 1 ] - EUC_TO_ASCII_TABLE_START ];
else
if( buf[ 0 ] == 0xA3 && buf[ 1 ] >= EUC_TO_ASCII_TABLE_START )
out_code = euc_a3_to_ascii_table[ buf[ 1 ] - EUC_TO_ASCII_TABLE_START ];
if( out_code == 0 )
{
EContainer * cont = static_cast< EContainer * >( container );
if( cont->book->codecEuc() )
{
QByteArray str = cont->book->codecEuc()->toUnicode( (const char *)buf, 2 ).toUtf8();
eb_write_text( book, str.data(), str.size() );
}
else
eb_write_text( book, (const char *)buf, 2 );
}
else
eb_write_text_byte1( book, out_code );
}
return EB_SUCCESS;
}
EB_Error_Code hook_wide_jisx0208( EB_Book * book, EB_Appendix *, void * ptr,
EB_Hook_Code, int, const unsigned int * argv )
{
EpwingBook * ebook = static_cast< EContainer * >( ptr )->book;
char buf[2];
buf[1] = *argv & 0xFF;
buf[0] = ( *argv & 0xFF00 ) >> 8;
if( ebook->codecEuc() )
{
QByteArray b = ebook->codecEuc()->toUnicode( buf, 2 ).toUtf8();
eb_write_text( book, b.data(), b.size() );
}
else
eb_write_text_byte2( book, buf[ 0 ], buf[ 1 ] );
return EB_SUCCESS;
}
EB_Error_Code hook_gb2312( EB_Book * book, EB_Appendix *, void * container,
EB_Hook_Code, int, const unsigned int * argv )
{
EpwingBook * ebook = static_cast< EContainer * >( container )->book;
char buf[2];
buf[1] = *argv & 0xFF;
buf[0] = ( *argv & 0xFF00 ) >> 8 ;
if( ebook->codecGB() )
{
QByteArray b = ebook->codecGB()->toUnicode( buf, 2 ).toUtf8();
eb_write_text( book, b.data(), b.size() );
}
else
eb_write_text_byte2( book, buf[ 0 ], buf[ 1 ] );
return EB_SUCCESS;
}
EB_Error_Code hook_subscript( EB_Book * book, EB_Appendix *, void * container,
EB_Hook_Code code, int, const unsigned int * )
{
EContainer * cn = static_cast< EContainer * >( container );
if( cn->textOnly )
return EB_SUCCESS;
if( code == EB_HOOK_BEGIN_SUBSCRIPT )
eb_write_text_string( book, cn->book->beginDecoration( EpwingBook::SUBSCRIPT ) );
if( code == EB_HOOK_END_SUBSCRIPT )
eb_write_text_string( book, cn->book->endDecoration( EpwingBook::SUBSCRIPT ) );
return EB_SUCCESS;
}
EB_Error_Code hook_superscript( EB_Book * book, EB_Appendix *, void * container,
EB_Hook_Code code, int, const unsigned int * )
{
EContainer * cn = static_cast< EContainer * >( container );
if( cn->textOnly )
return EB_SUCCESS;
if( code == EB_HOOK_BEGIN_SUPERSCRIPT )
eb_write_text_string( book, cn->book->beginDecoration( EpwingBook::SUPERSCRIPT ) );
if( code == EB_HOOK_END_SUPERSCRIPT )
eb_write_text_string( book, cn->book->endDecoration( EpwingBook::SUPERSCRIPT ) );
return EB_SUCCESS;
}
EB_Error_Code hook_decoration( EB_Book * book, EB_Appendix *, void * container,
EB_Hook_Code code, int, const unsigned int * argv )
{
EContainer * cn = static_cast< EContainer * >( container );
if( cn->textOnly )
return EB_SUCCESS;
if( code == EB_HOOK_BEGIN_DECORATION )
eb_write_text_string( book, cn->book->beginDecoration( argv[ 1 ] ) );
if( code == EB_HOOK_END_DECORATION )
eb_write_text_string( book, cn->book->endDecoration( argv[ 1 ] ) );
return EB_SUCCESS;
}
EB_Error_Code hook_color_image( EB_Book * book, EB_Appendix *, void * container,
EB_Hook_Code code, int, const unsigned int * argv )
{
EContainer * cn = static_cast< EContainer * >( container );
if( cn->textOnly )
return EB_SUCCESS;
QByteArray str = cn->book->handleColorImage( code, argv );
if( !str.isEmpty() )
eb_write_text( book, str.data(), str.size() );
return EB_SUCCESS;
}
EB_Error_Code hook_mono_image( EB_Book * book, EB_Appendix *, void * container,
EB_Hook_Code code, int, const unsigned int * argv )
{
EContainer * cn = static_cast< EContainer * >( container );
if( cn->textOnly )
return EB_SUCCESS;
QByteArray str = cn->book->handleMonoImage( code, argv );
if( !str.isEmpty() )
eb_write_text( book, str.data(), str.size() );
return EB_SUCCESS;
}
EB_Error_Code hook_wave( EB_Book * book, EB_Appendix *, void * container,
EB_Hook_Code code, int, const unsigned int * argv )
{
EContainer * cn = static_cast< EContainer * >( container );
if( cn->textOnly )
return EB_SUCCESS;
QByteArray str = cn->book->handleWave( code, argv );
if( !str.isEmpty() )
eb_write_text( book, str.data(), str.size() );
return EB_SUCCESS;
}
EB_Error_Code hook_mpeg( EB_Book * book, EB_Appendix *, void * container,
EB_Hook_Code code, int, const unsigned int * argv )
{
EContainer * cn = static_cast< EContainer * >( container );
if( cn->textOnly )
return EB_SUCCESS;
QByteArray str = cn->book->handleMpeg( code, argv );
if( !str.isEmpty() )
eb_write_text( book, str.data(), str.size() );
return EB_SUCCESS;
}
EB_Error_Code hook_narrow_font( EB_Book * book, EB_Appendix *, void * container,
EB_Hook_Code, int, const unsigned int * argv )
{
EContainer * cn = static_cast< EContainer * >( container );
QByteArray str = cn->book->handleNarrowFont( argv, cn->textOnly );
if( !str.isEmpty() )
eb_write_text( book, str.data(), str.size() );
return EB_SUCCESS;
}
EB_Error_Code hook_wide_font( EB_Book * book, EB_Appendix *, void * container,
EB_Hook_Code, int, const unsigned int * argv )
{
EContainer * cn = static_cast< EContainer * >( container );
QByteArray str = cn->book->handleWideFont( argv, cn->textOnly );
if( !str.isEmpty() )
eb_write_text( book, str.data(), str.size() );
return EB_SUCCESS;
}
EB_Error_Code hook_reference( EB_Book * book, EB_Appendix *, void * container,
EB_Hook_Code code, int, const unsigned int * argv )
{
EContainer * cn = static_cast< EContainer * >( container );
if( cn->textOnly )
return EB_SUCCESS;
QByteArray str = cn->book->handleReference( code, argv );
if( !str.isEmpty() )
eb_write_text( book, str.data(), str.size() );
return EB_SUCCESS;
}
// EpwingBook class
EpwingBook::EpwingBook() :
currentSubBook( -1 )
{
codec_ISO = QTextCodec::codecForName( "ISO8859-1" );
codec_GB = QTextCodec::codecForName( "GB2312" );
codec_Euc = QTextCodec::codecForName("EUC-JP");
eb_initialize_book( &book );
eb_initialize_appendix( &appendix );
eb_initialize_hookset( &hookSet );
eb_set_hooks( &hookSet, hooks );
eb_initialize_hookset( &refHookSet );
eb_set_hooks( &refHookSet, refHooks );
}
EpwingBook::~EpwingBook()
{
eb_finalize_hookset( &hookSet );
eb_finalize_appendix( &appendix );
eb_finalize_book( &book );
}
void EpwingBook::setErrorString( QString const & func, EB_Error_Code code )
{
error_string = QString( "EB \"%1\" function error: %2 (%3)" )
.arg( func )
.arg( QTextCodec::codecForLocale()->toUnicode( eb_error_string( code ) ) )
.arg( QTextCodec::codecForLocale()->toUnicode( eb_error_message( code ) ) );
if( currentPosition.page != 0 )
error_string += QString( " on page %1, offset %2" ).arg( QString::number( currentPosition.page ) )
.arg( QString::number( currentPosition.offset ) );
}
void EpwingBook::collectFilenames( QString const & directory, vector< string > & files )
{
QDir dir( directory );
QString catName;
catName += QDir::separator();
catName += "catalogs";
QFileInfoList entries = dir.entryInfoList( QDir::AllDirs | QDir::Files | QDir::NoDotAndDotDot,
QDir::Name | QDir::DirsLast );
for( QFileInfoList::const_iterator i = entries.constBegin();
i != entries.constEnd(); ++i )
{
QString fullName = QDir::toNativeSeparators( i->filePath() );
if( i->isDir() )
collectFilenames( fullName, files );
else
files.push_back( FsEncoding::encode( fullName ) );
}
}
int EpwingBook::setBook( string const & directory )
{
error_string.clear();
if( directory.empty() )
throw exEpwing( "No such directory" );
currentPosition.page = 0;
indexHeadwordsPosition.page = 0;
indexHeadwordsPosition.offset = 0;
currentSubBook = -1;
EB_Error_Code ret = eb_bind( &book, directory.c_str() );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_bind", ret );
throw exEbLibrary( error_string.toUtf8().data() );
return -1;
}
ret = eb_bind_appendix( &appendix, directory.c_str() );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_bind_appendix", ret );
}
ret = eb_subbook_list( &book, subBookList, &subBookCount );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_subbook_list", ret );
throw exEbLibrary( error_string.toUtf8().data() );
}
ret = eb_appendix_subbook_list( &appendix, subAppendixList, &subAppendixCount );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_appendix_subbook_list", ret );
}
if( !codec_Euc
|| ( book.character_code == EB_CHARCODE_ISO8859_1 && !codec_ISO )
|| ( book.character_code == EB_CHARCODE_JISX0208_GB2312 && !codec_GB ) )
throw exEpwing( "No required codec to decode dictionary" );
rootDir = FsEncoding::decode( directory.c_str() );
return subBookCount;
}
bool EpwingBook::setSubBook( int book_nom )
{
error_string.clear();
customFontsMap.clear();
currentPosition.page = 0;
if( book_nom < 0 || book_nom >= subBookCount )
throw exEpwing( "Invalid subbook number" );
if( currentSubBook == book_nom )
return true;
EB_Error_Code ret = eb_set_subbook( &book, subBookList[ book_nom ] );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_set_subbook", ret );
throw exEbLibrary( error_string.toUtf8().data() );
}
currentSubBook = book_nom;
if( book_nom < subAppendixCount )
{
ret = eb_set_appendix_subbook( &appendix, subAppendixList[ book_nom ] );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_set_appendix_subbook", ret );
}
}
if( eb_have_font( &book, EB_FONT_16 ) )
{
ret = eb_set_font( &book, EB_FONT_16 );
if( ret != EB_SUCCESS )
setErrorString( "eb_set_font", ret );
}
// Load fonts list
QString fileName = rootDir + QDir::separator()
+ "afonts_" + QString::number( book_nom );
QFile f( fileName );
if( f.open( QFile::ReadOnly | QFile::Text ) )
{
QTextStream ts( &f );
#if (QT_VERSION < QT_VERSION_CHECK(6,0,0))
ts.setCodec( "UTF-8" );
#else
ts.setEncoding(QStringConverter::Utf8);
#endif
QString line = ts.readLine();
while( !line.isEmpty() )
{
QStringList list = line.remove( '\n' ).split( ' ', Qt::SkipEmptyParts );
if( list.count() == 2 )
customFontsMap[ list[ 0 ] ] = list[ 1 ];
line = ts.readLine();
}
f.close();
}
return true;
}
void EpwingBook::setCacheDirectory( QString const & cacheDir )
{
mainCacheDir = cacheDir;
cacheImagesDir.clear();
cacheSoundsDir.clear();
cacheMoviesDir.clear();
cacheFontsDir.clear();
imageCacheList.clear();
soundsCacheList.clear();
moviesCacheList.clear();
fontsCacheList.clear();
}
QString EpwingBook::createCacheDir( QString const & dirName )
{
QDir dir;
QFileInfo info( mainCacheDir );
if( !info.exists() || !info.isDir() )
{
if( !dir.mkdir( mainCacheDir ) )
{
gdWarning( "Epwing: can't create cache directory \"%s\"", mainCacheDir.toUtf8().data() );
return QString();
}
}
QString cacheDir = mainCacheDir + QDir::separator() + dirName;
info = QFileInfo( cacheDir );
if( !info.exists() || !info.isDir() )
{
if( !dir.mkdir( cacheDir ) )
{
gdWarning( "Epwing: can't create cache directory \"%s\"", cacheDir.toUtf8().data() );
return QString();
}
}
return cacheDir;
}
QString EpwingBook::getCurrentSubBookDirectory()
{
error_string.clear();
if( currentSubBook < 0 || currentSubBook >= subBookCount )
{
setErrorString( "eb_subbook_directory2", EB_ERR_NO_SUCH_BOOK );
throw exEbLibrary( error_string.toUtf8().data() );
}
char buffer[ EB_MAX_PATH_LENGTH + 1 ];
EB_Error_Code ret = eb_subbook_directory2( &book, subBookList[ currentSubBook ], buffer );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_subbook_directory2", ret );
throw exEbLibrary( error_string.toUtf8().data() );
}
return QString::fromLocal8Bit( buffer );
}
QString EpwingBook::makeFName( QString const & ext, int page, int offset ) const
{
QString name = QString::number( page )
+ "x"
+ QString::number( offset )
+ "."
+ ext;
return name;
}
QString EpwingBook::title()
{
char buf[ EB_MAX_TITLE_LENGTH + 1 ];
error_string.clear();
EB_Error_Code ret = eb_subbook_title( &book, buf );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_subbook_title", ret );
throw exEbLibrary( error_string.toUtf8().data() );
}
buf[ EB_MAX_TITLE_LENGTH ] = 0;
if( codec_Euc )
return codec_Euc->toUnicode( buf );
return QString();
}
QString EpwingBook::copyright()
{
error_string.clear();
if( !eb_have_copyright( &book ) )
return QString();
EB_Position position;
EB_Error_Code ret = eb_copyright( &book, &position );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_copyright", ret );
throw exEbLibrary( error_string.toUtf8().data() );
}
currentPosition = position;
return getText( position.page, position.offset, true );
}
QString EpwingBook::getText( int page, int offset, bool text_only )
{
error_string.clear();
EB_Position pos;
pos.page = page;
pos.offset = offset;
currentPosition = pos;
EB_Error_Code ret = eb_seek_text(&book, &pos);
if( ret != EB_SUCCESS )
{
setErrorString( "eb_seek_text", ret );
currentPosition.page = 0;
throw exEbLibrary( error_string.toUtf8().data() );
}
QByteArray buf;
char buffer[ TextBufferSize + 1 ];
ssize_t buffer_length;
EContainer container( this, text_only );
prepareToRead();
for( ; ; )
{
ret = eb_read_text( &book, &appendix, &hookSet, &container,
TextBufferSize, buffer, &buffer_length );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_read_text", ret );
break;
}
buf += QByteArray( buffer, buffer_length );
if( eb_is_text_stopped( &book ) )
break;
if( buf.length() > TextSizeLimit )
{
error_string = "Data too large";
currentPosition.page = 0;
return QString();
}
}
QString text = QString::fromUtf8( buf.data(), buf.size() ).trimmed();
finalizeText( text);
return text;
}
void EpwingBook::getReferencesFromText( int page, int offset )
{
error_string.clear();
EB_Position pos;
pos.page = page;
pos.offset = offset;
currentPosition = pos;
EB_Error_Code ret = eb_seek_text(&book, &pos);
if( ret != EB_SUCCESS )
{
setErrorString( "eb_seek_text", ret );
throw exEbLibrary( error_string.toUtf8().data() );
}
char buffer[ TextBufferSize + 1 ];
ssize_t buffer_length;
EContainer container( this, false );
prepareToRead();
for( ; ; )
{
ret = eb_read_text( &book, &appendix, &refHookSet, &container,
TextBufferSize, buffer, &buffer_length );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_read_text", ret );
break;
}
if( eb_is_text_stopped( &book ) )
break;
}
for( int x = 0; x < refPages.size(); x++ )
{
LinksQueue.push_back( EWPos( refPages[ x ], refOffsets[ x ] ) );
}
}
EB_Error_Code EpwingBook::forwardText( EB_Position & startPos )
{
EB_Error_Code ret = eb_seek_text( &book, &startPos );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_seek_text", ret );
throw exEbLibrary( error_string.toUtf8().data() );
}
ret = eb_forward_text( &book, &appendix );
while( ret == EB_ERR_END_OF_CONTENT )
{
ret = eb_tell_text( &book, &startPos );
if( ret != EB_SUCCESS )
break;
if( startPos.page >= book.subbook_current->text.end_page )
return EB_ERR_END_OF_CONTENT;
startPos.offset += 2;
currentPosition = startPos;
ret = eb_seek_text( &book, &startPos );
if( ret == EB_SUCCESS )
ret = eb_forward_text( &book, &appendix );
}
return ret;
}
void EpwingBook::getFirstHeadword( EpwingHeadword & head )
{
error_string.clear();
EB_Position pos;
EB_Error_Code ret = eb_text( &book, &pos );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_text", ret );
throw exEbLibrary( error_string.toUtf8().data() );
}
ret = forwardText( pos );
if( ret != EB_SUCCESS )
{
setErrorString( "forwardText", ret );
throw exEbLibrary( error_string.toUtf8().data() );
}
eb_backward_text( &book, &appendix );
ret = eb_tell_text( &book, &pos );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_tell_text", ret );
throw exEbLibrary( error_string.toUtf8().data() );
}
currentPosition = pos;
indexHeadwordsPosition = pos;
head.page = pos.page;
head.offset = pos.offset;
if( !readHeadword( pos, head.headword, true ) )
throw exEbLibrary( error_string.toUtf8().data() );
fixHeadword( head.headword );
EWPos epos( pos.page, pos.offset );
allHeadwordPositions[ ((uint64_t)pos.page)<<32|(pos.offset>>2) ] =true;
}
bool EpwingBook::getNextHeadword( EpwingHeadword & head )
{
EB_Position pos;
// No queued positions - forward to next article
error_string.clear();
pos = indexHeadwordsPosition;
for( ; ; )
{
EB_Error_Code ret = forwardText( pos );
indexHeadwordsPosition = pos;
if( ret == EB_ERR_END_OF_CONTENT )
return false;
else
if( ret != EB_SUCCESS )
{
setErrorString( "eb_forward_text", ret );
throw exEbLibrary( error_string.toUtf8().data() );
}
ret = eb_tell_text( &book, &pos );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_tell_text", ret );
throw exEbLibrary( error_string.toUtf8().data() );
}
indexHeadwordsPosition = pos;
head.page = pos.page;
head.offset = pos.offset;
if( !readHeadword( pos, head.headword, true ) )
throw exEbLibrary( error_string.toUtf8().data() );
if( head.headword.isEmpty() )
continue;
fixHeadword( head.headword );
try
{
getReferencesFromText( pos.page, pos.offset);
}
catch( std::exception & )
{
}
if( !allHeadwordPositions.contains( ((uint64_t)pos.page) << 32 | ( pos.offset / 4 ) ) )
{
allHeadwordPositions[ ((uint64_t)pos.page) << 32 | ( pos.offset / 4 ) ] = true;
return true;
}
}
return true;
}
bool EpwingBook::processRef( EpwingHeadword & head)
{
EB_Position pos;
QRegularExpression badLinks( "#(v|n)\\d", QRegularExpression::UseUnicodePropertiesOption );
while( !LinksQueue.isEmpty() )
{
EWPos epos = LinksQueue.last();
LinksQueue.pop_back();
pos.page = epos.first;
pos.offset = epos.second;
if( readHeadword( pos, head.headword, true ) )
{
if( head.headword.isEmpty() || head.headword.contains( badLinks ) )
continue;
fixHeadword( head.headword );
head.page = pos.page;
head.offset = pos.offset;
auto key = ( (uint64_t)pos.page ) << 32 | ( pos.offset >> 2 );
if( !allRefPositions.contains( key ) )
{
// fixed the reference headword ,to avoid the headword collision with other entry .
//if(!allHeadwordPositions.contains(key))
head.headword = QString( "r%1At%2" ).arg( pos.page ).arg( pos.offset );
allRefPositions[ key ] = true;
return true;
}
}
}
return false;
}
bool EpwingBook::readHeadword( EB_Position const& pos,
QString & headword,
bool text_only )
{
EContainer container( this, text_only );
ssize_t head_length;
EB_Position newPos = pos;
EB_Error_Code ret = eb_seek_text( &book, &newPos );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_seek_text", ret );
return false;
}
char buffer[ TextBufferSize + 1 ];
ret = eb_read_heading( &book, &appendix, &hookSet, &container,
TextBufferSize, buffer, &head_length );
if( ret != EB_SUCCESS )
{
setErrorString( "eb_read_heading", ret );
return false;
}
headword = QString::fromUtf8( buffer, head_length );
return true;
}
bool EpwingBook::isHeadwordCorrect( QString const & headword )
{
QByteArray buf, buf2;
EB_Hit hits[ 2 ];
int hit_count;
EB_Error_Code ret;
if( headword.isEmpty() )
return false;