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Diffstat (limited to 'indexlib/create.cpp')
| -rw-r--r-- | indexlib/create.cpp | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/indexlib/create.cpp b/indexlib/create.cpp new file mode 100644 index 000000000..1020cc268 --- /dev/null +++ b/indexlib/create.cpp @@ -0,0 +1,116 @@ + +/* This file is part of indexlib. + * Copyright (C) 2005 Luís Pedro Coelho <luis@luispedro.org> + * + * Indexlib is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License, version 2, as + * published by the Free Software Foundation and available as file + * GPL_V2 which is distributed along with indexlib. + * + * Indexlib 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 + * + * In addition, as a special exception, the copyright holders give + * permission to link the code of this program with any edition of + * the Qt library by Trolltech AS, Norway (or with modified versions + * of Qt that use the same license as Qt), and distribute linked + * combinations including the two. You must obey the GNU General + * Public License in all respects for all of the code used other than + * Qt. If you modify this file, you may extend this exception to + * your version of the file, but you are not obligated to do so. If + * you do not wish to do so, delete this exception statement from + * your version. + */ + +#include "create.h" +#include "quotes.h" +#include "path.h" +#include "version.h" +#include <fstream> +#include <unistd.h> + +namespace { + +indexlib::index_type::type type_of( const char* basename ) { + std::ifstream info( path_concat( basename, "info" ).c_str() ); + if ( !info ) return indexlib::index_type::none; + std::string type; + std::string marker; + std::string ver; + int major, minor; + char sep; + std::getline( info, marker ); + info >> ver >> major >> sep >> minor; + info >> type; + if ( !info ) return indexlib::index_type::none; + if ( type == "quotes" ) return indexlib::index_type::quotes; + if ( type == "ifile" ) return indexlib::index_type::ifile; + return indexlib::index_type::none; +} +} + +std::auto_ptr<indexlib::index> indexlib::create( const char* basename, indexlib::index_type::type flags ) { + using namespace indexlib::version; + if ( type_of( basename ) != indexlib::index_type::none ) return std::auto_ptr<indexlib::index>( 0 ); + try { + if ( basename[ strlen( basename ) - 1 ] == '/' && !isdir( basename ) ) { + if ( !indexlib::detail::mkdir_trailing( basename ) ) return std::auto_ptr<indexlib::index>( 0 ); + } + std::ofstream info( path_concat( basename, "info" ).c_str() ); + info << marker << std::endl; + info << "version " << major << '.' << minor << "\n"; + if ( flags == index_type::quotes ) { + info << "quotes" << std::endl; + return std::auto_ptr<indexlib::index>( new quotes( basename ) ); + } + if ( flags == index_type::ifile ) { + info << "ifile" << std::endl; + return std::auto_ptr<indexlib::index>( new ifile( basename ) ); + } + } catch ( const std::exception& e ) { + std::cerr << "index creation failed: " << e.what() << std::endl; + } + return std::auto_ptr<indexlib::index>( 0 ); +} + +std::auto_ptr<indexlib::index> indexlib::open( const char* basename, unsigned flags ) { + using namespace indexlib; + switch ( type_of( basename ) ) { + case index_type::ifile: return std::auto_ptr<indexlib::index>( new ifile( basename ) ); + case index_type::quotes: return std::auto_ptr<indexlib::index>( new quotes( basename ) ); + case index_type::none: + if ( flags == open_flags::fail_if_nonexistant ) return std::auto_ptr<indexlib::index>(); + return create( basename, index_type::type( flags ) ); + } + logfile() << format( "%s:%s: Unexpected code reached!\n" ) % __FILE__ % __LINE__; + return std::auto_ptr<indexlib::index>( 0 ); +} + +bool indexlib::exists( const char* basename ) { + return basename && ( type_of( basename ) == indexlib::index_type::none ); +} + +void indexlib::remove( const char* basename ) { + assert( basename ); + if ( !basename ) return; + + using namespace indexlib; + switch ( type_of( basename ) ) { + case index_type::ifile: ifile::remove( basename ); + break; + case index_type::quotes: quotes::remove( basename ); + break; + case index_type::none: /* do nothing */; + } + ::unlink( path_concat( basename, "info" ).c_str() ); +} + + + |