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117 lines
4.2 KiB
117 lines
4.2 KiB
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/* This file is part of indexlib.
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* Copyright (C) 2005 Luís Pedro Coelho <luis@luispedro.org>
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*
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* Indexlib is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation and available as file
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* GPL_V2 which is distributed along with indexlib.
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*
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* Indexlib is distributed in the hope that it will be useful, but
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* 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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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of this program with any edition of
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* the TQt library by Trolltech AS, Norway (or with modified versions
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* of TQt that use the same license as TQt), and distribute linked
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* combinations including the two. You must obey the GNU General
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* Public License in all respects for all of the code used other than
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* TQt. If you modify this file, you may extend this exception to
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* your version of the file, but you are not obligated to do so. If
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* you do not wish to do so, delete this exception statement from
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* your version.
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*/
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#include "create.h"
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#include "quotes.h"
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#include "path.h"
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#include "version.h"
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#include <fstream>
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#include <unistd.h>
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namespace {
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indexlib::index_type::type type_of( const char* basename ) {
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std::ifstream info( path_concat( basename, "info" ).c_str() );
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if ( !info ) return indexlib::index_type::none;
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std::string type;
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std::string marker;
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std::string ver;
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int major, minor;
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char sep;
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std::getline( info, marker );
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info >> ver >> major >> sep >> minor;
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info >> type;
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if ( !info ) return indexlib::index_type::none;
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if ( type == "quotes" ) return indexlib::index_type::quotes;
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if ( type == "ifile" ) return indexlib::index_type::ifile;
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return indexlib::index_type::none;
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}
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}
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std::unique_ptr<indexlib::index> indexlib::create( const char* basename, indexlib::index_type::type flags ) {
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using namespace indexlib::version;
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if ( type_of( basename ) != indexlib::index_type::none ) return std::unique_ptr<indexlib::index>();
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try {
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if ( basename[ strlen( basename ) - 1 ] == '/' && !isdir( basename ) ) {
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if ( !indexlib::detail::mkdir_trailing( basename ) ) return std::unique_ptr<indexlib::index>();
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}
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std::ofstream info( path_concat( basename, "info" ).c_str() );
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info << marker << std::endl;
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info << "version " << major << '.' << minor << "\n";
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if ( flags == index_type::quotes ) {
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info << "quotes" << std::endl;
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return std::unique_ptr<indexlib::index>( new quotes( basename ) );
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}
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if ( flags == index_type::ifile ) {
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info << "ifile" << std::endl;
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return std::unique_ptr<indexlib::index>( new ifile( basename ) );
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}
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} catch ( const std::exception& e ) {
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std::cerr << "index creation failed: " << e.what() << std::endl;
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}
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return std::unique_ptr<indexlib::index>();
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}
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std::unique_ptr<indexlib::index> indexlib::open( const char* basename, unsigned flags ) {
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using namespace indexlib;
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switch ( type_of( basename ) ) {
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case index_type::ifile: return std::unique_ptr<indexlib::index>( new ifile( basename ) );
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case index_type::quotes: return std::unique_ptr<indexlib::index>( new quotes( basename ) );
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case index_type::none:
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if ( flags == open_flags::fail_if_nonexistant ) return std::unique_ptr<indexlib::index>();
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return create( basename, index_type::type( flags ) );
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}
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logfile() << format( "%s:%s: Unexpected code reached!\n" ) % __FILE__ % __LINE__;
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return std::unique_ptr<indexlib::index>();
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}
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bool indexlib::exists( const char* basename ) {
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return basename && ( type_of( basename ) == indexlib::index_type::none );
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}
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void indexlib::remove( const char* basename ) {
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assert( basename );
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if ( !basename ) return;
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using namespace indexlib;
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switch ( type_of( basename ) ) {
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case index_type::ifile: ifile::remove( basename );
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break;
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case index_type::quotes: quotes::remove( basename );
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break;
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case index_type::none: /* do nothing */;
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}
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::unlink( path_concat( basename, "info" ).c_str() );
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}
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