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#include "zipios-config.h"
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#include "meta-iostreams.h"
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#include "zipinputstream.h"
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#include "zipios_defs.h"
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#include "backbuffer.h"
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ZipFile ZipFile::openEmbeddedZipFile( const string &name ) {
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// open zipfile, read 4 last bytes close file
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// create ZipFile object.
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ifstream ifs( name.c_str(), ios::in | ios::binary ) ;
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ifs.seekg( -4, ios::end ) ;
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uint32 start_offset = readUint32( ifs ) ;
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return ZipFile( name, start_offset, 4 ) ;
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ZipFile::ZipFile( const string &name , int s_off, int e_off
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/* , ios::open_mode mode */ )
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: _vs( s_off, e_off ) {
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ifstream _zipfile( name.c_str(), ios::in | ios::binary ) ;
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FileCollection *ZipFile::clone() const {
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return new ZipFile( *this ) ;
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void ZipFile::close() {
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istream *ZipFile::getInputStream( const ConstEntryPointer &entry ) {
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throw InvalidStateException( "Attempt to use an invalid FileCollection" ) ;
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return getInputStream( entry->getName() ) ;
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istream *ZipFile::getInputStream( const string &entry_name,
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MatchPath matchpath ) {
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throw InvalidStateException( "Attempt to use an invalid ZipFile" ) ;
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ConstEntryPointer ent = getEntry( entry_name, matchpath ) ;
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return new ZipInputStream( _filename,
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static_cast< const ZipCDirEntry * >( ent.get() )->
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getLocalHeaderOffset() + _vs.startOffset() ) ;
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bool ZipFile::init( istream &_zipfile ) {
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// Check stream error state
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setError ( "Error reading from file" ) ;
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_valid = readCentralDirectory( _zipfile ) ;
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bool ZipFile::readCentralDirectory ( istream &_zipfile ) {
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// Find and read eocd.
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if ( ! readEndOfCentralDirectory( _zipfile ) )
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throw FCollException( "Unable to find zip structure: End-of-central-directory" ) ;
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// Position read pointer to start of first entry in central dir.
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_vs.vseekg( _zipfile, _eocd.offset(), ios::beg ) ;
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// Giving the default argument in the next line to keep Visual C++ quiet
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_entries.resize ( _eocd.totalCount(), 0 ) ;
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while ( ( entry_num < _eocd.totalCount() ) ) {
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ZipCDirEntry *ent = new ZipCDirEntry ;
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_entries[ entry_num ] = ent ;
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if ( _zipfile.bad() )
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throw IOException( "Error reading zip file while reading zip file central directory" ) ;
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else if ( _zipfile.fail() )
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throw FCollException( "Zip file consistency problem. Failure while reading zip file central directory" ) ;
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else if ( _zipfile.eof() )
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throw IOException( "Premature end of file while reading zip file central directory" ) ;
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// Consistency check. eocd should start here
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int pos = _vs.vtellg( _zipfile ) ;
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_vs.vseekg( _zipfile, 0, ios::end ) ;
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int remaining = static_cast< int >( _vs.vtellg( _zipfile ) ) - pos ;
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if ( remaining != _eocd.eocdOffSetFromEnd() )
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throw FCollException( "Zip file consistency problem. Zip file data fields are inconsistent with zip file layout" ) ;
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// Consistency check 2, are local headers consistent with
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if ( ! confirmLocalHeaders( _zipfile ) )
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throw FCollException( "Zip file consistency problem. Zip file data fields are inconsistent with zip file layout" ) ;
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bool ZipFile::readEndOfCentralDirectory ( istream &_zipfile ) {
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BackBuffer bb( _zipfile, _vs ) ;
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if ( ! bb.readChunk ( read_p ) ) {
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if ( _eocd.read( bb, read_p ) ) {
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bool ZipFile::confirmLocalHeaders( istream &_zipfile ) {
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Entries::const_iterator it ;
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int inconsistencies = 0 ;
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for ( it = _entries.begin() ; it != _entries.end() ; it++ ) {
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ent = static_cast< ZipCDirEntry * >( (*it).get() ) ;
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_vs.vseekg( _zipfile, ent->getLocalHeaderOffset(), ios::beg ) ;
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if ( ! _zipfile || zlh != *ent ) {
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return ! inconsistencies ;
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void ZipFile::setError ( string error_str ) {
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#ifdef _USE_EXCEPTIONS
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throw error_str ; // define exception class instead.
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cerr << error_str << endl ; // define operator<< for exception class if such a class replaces string
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The implementation of ZipFile.
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Zipios++ - a small C++ library that provides easy access to .zip files.
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Copyright (C) 2000 Thomas S�ndergaard
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
added
removed
src/Base/zipios/zipfile.cpp
