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.pc/delete2/path.hpp
00001 /*********************************************************************/
00002 // dar - disk archive - a backup/restoration program
00003 // Copyright (C) 2002-2052 Denis Corbin
00004 //
00005 // This program is free software; you can redistribute it and/or
00006 // modify it under the terms of the GNU General Public License
00007 // as published by the Free Software Foundation; either version 2
00008 // of the License, or (at your option) any later version.
00009 // 
00010 // This program is distributed in the hope that it will be useful,
00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013 // GNU General Public License for more details.
00014 // 
00015 // You should have received a copy of the GNU General Public License
00016 // along with this program; if not, write to the Free Software
00017 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00018 //
00019 // to contact the author : dar.linux@free.fr
00020 /*********************************************************************/
00021 // $Id$
00022 //
00023 /*********************************************************************/
00024 
00025 #ifndef PATH_HPP
00026 #define PATH_HPP
00027 
00028 #pragma interface
00029 
00030 #include <list>
00031 #include <string>
00032 #include "erreurs.hpp"
00033 
00034 using namespace std;
00035 
00036 class path
00037 {
00038 public :
00039     path(string s); // empty string is not a valid string (exception thrown)
00040     path(const char *s) { *this = path(string(s)); };
00041     path(const path & ref);
00042     path & operator = (const path & ref);
00043     bool operator == (const path & ref) const;
00044     
00045     string basename() const; // name of the innermost directory/file of the path 
00046     void reset_read() { reading = dirs.begin(); }; // reset for read_subdir. next call to read_subdir is the most global 
00047         // directory 
00048     bool read_subdir(string & r); // return the name of the next directory part of the path to basename(), starting at root
00049     bool is_relative() const { return relative; };
00050     bool pop(string & arg); // remove and return in argument the basename of the path, return false if not possible (no sub-directory)
00051     bool pop_front(string & arg); // removes and returns the first directory of the path,
00052         // when just the basename is present returns false, if the path is absolute, 
00053         // the first call change it to relative (except if equal to "/" then return false)
00054 
00055     path operator + (const path & arg) const { path tmp = *this; tmp += arg; return tmp; }; 
00056         // add arg as a subdir of the object, arg can be a string also, which is converted to a path on the fly
00057     path & operator += (const path & arg);
00058     bool is_subdir_of(const path & p) const;
00059     string display() const;
00060     unsigned int degre() const { return dirs.size() + (relative ? 0 : 1); };
00061     
00062 private :
00063     list<string>::iterator reading;
00064     list<string> dirs;
00065     bool relative;
00066 
00067     void reduce();
00068 };
00069 
00070 #endif
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