libept
path.h
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00001 // -*- mode: c++; indent-tabs-mode: t -*-
00006 /*
00007  * Copyright (C) 2005,2006,2007  Enrico Zini <enrico@debian.org>
00008  *
00009  * This program is free software; you can redistribute it and/or modify
00010  * it under the terms of the GNU General Public License as published by
00011  * the Free Software Foundation; either version 2 of the License, or
00012  * (at your option) any later version.
00013  *
00014  * This program is distributed in the hope that it will be useful,
00015  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00016  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00017  * GNU General Public License for more details.
00018  *
00019  * You should have received a copy of the GNU General Public License
00020  * along with this program; if not, write to the Free Software
00021  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00022  */
00023 
00024 #ifndef EPT_POPCON_PATH_H
00025 #define EPT_POPCON_PATH_H
00026 
00027 #include <string>
00028 
00029 struct stat;
00030 
00031 namespace ept {
00032 namespace popcon {
00033 
00037 class Path
00038 {
00039 public:
00040     static std::string scores();
00041     static std::string scoresIndex();
00042     static std::string userScores();
00043     static std::string userScoresIndex();
00044 
00045     static std::string popconSourceDir();
00046     static std::string popconIndexDir();
00047     static std::string popconUserSourceDir();
00048     static std::string popconUserIndexDir();
00049 
00050     // Directory where Popcon source data is found
00051     static void setPopconSourceDir( const std::string &s );
00052 
00053     // Directory where Popcon indexes are kept
00054     static void setPopconIndexDir( const std::string &s );
00055 
00056     // User-specific directory for Popcon source data
00057     static void setPopconUserSourceDir( const std::string &s );
00058 
00059     // User-specific directory for Popcon index data
00060     static void setPopconUserIndexDir( const std::string &s );
00061 
00062     static int access( const std::string &, int );
00063     static time_t timestamp( const std::string& );
00064 
00065     // RAII-style classes to temporarily override directories
00066     class OverridePopconSourceDir
00067     {
00068         std::string old;
00069     public:
00070         OverridePopconSourceDir(const std::string& path) : old(Path::popconSourceDir())
00071         {
00072             Path::setPopconSourceDir(path);
00073         }
00074         ~OverridePopconSourceDir() { Path::setPopconSourceDir(old); }
00075     };
00076     class OverridePopconIndexDir
00077     {
00078         std::string old;
00079     public:
00080         OverridePopconIndexDir(const std::string& path) : old(Path::popconIndexDir())
00081         {
00082             Path::setPopconIndexDir(path);
00083         }
00084         ~OverridePopconIndexDir() { Path::setPopconIndexDir(old); }
00085     };
00086     class OverridePopconUserSourceDir
00087     {
00088         std::string old;
00089     public:
00090         OverridePopconUserSourceDir(const std::string& path) : old(Path::popconUserSourceDir())
00091         {
00092             Path::setPopconUserSourceDir(path);
00093         }
00094         ~OverridePopconUserSourceDir() { Path::setPopconUserSourceDir(old); }
00095     };
00096     class OverridePopconUserIndexDir
00097     {
00098         std::string old;
00099     public:
00100         OverridePopconUserIndexDir(const std::string& path) : old(Path::popconUserIndexDir())
00101         {
00102             Path::setPopconUserIndexDir(path);
00103         }
00104         ~OverridePopconUserIndexDir() { Path::setPopconUserIndexDir(old); }
00105     };
00106 protected:
00107     static Path *s_instance;
00108     static Path &instance();
00109 
00110     // Directory where Popcon source data is found
00111     std::string m_popconSourceDir;
00112 
00113     // Directory where Popcon indexes are kept
00114     std::string m_popconIndexDir;
00115 
00116     // User-specific directory for Popcon source data
00117     std::string m_popconUserSourceDir;
00118 
00119     // User-specific directory for Popcon index data
00120     std::string m_popconUserIndexDir;
00121 };
00122 
00123 }
00124 }
00125 
00126 // vim:set ts=4 sw=4:
00127 #endif