Pathname.h

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00001 /*---------------------------------------------------------------------\
00002 |                          ____ _   __ __ ___                          |
00003 |                         |__  / \ / / . \ . \                         |
00004 |                           / / \ V /|  _/  _/                         |
00005 |                          / /__ | | | | | |                           |
00006 |                         /_____||_| |_| |_|                           |
00007 |                                                                      |
00008 \---------------------------------------------------------------------*/
00012 #ifndef ZYPP_PATHNAME_H
00013 #define ZYPP_PATHNAME_H
00014 
00015 #include <iosfwd>
00016 #include <string>
00017 
00019 namespace zypp
00020 { 
00021 
00022   namespace filesystem
00023   { 
00024 
00026     //
00027     //  CLASS NAME : Pathname
00028     //
00042     class Pathname
00043     {
00044     public:
00046       Pathname()
00047       : prfx_i( 0 )
00048       {}
00049 
00051       Pathname( const std::string & name_tv )
00052       { _assign( name_tv ); }
00053 
00055       Pathname( const char * name_tv )
00056       { _assign( name_tv ? name_tv : "" ); }
00057 
00059       Pathname & operator=( const Pathname & path_tv )
00060       {
00061         prfx_i = path_tv.prfx_i;
00062         name_t = path_tv.name_t;
00063         return *this;
00064       }
00065 
00067       Pathname & operator/=( const Pathname & path_tv )
00068       { return( *this = cat( *this, path_tv ) ); }
00069 
00073       Pathname & operator+=( const Pathname & path_tv )
00074       { return( *this = cat( *this, path_tv ) ); }
00075 
00077       const std::string & asString() const
00078       { return name_t; }
00079 
00081       bool empty()    const { return name_t.empty(); }
00083       bool absolute() const { return !empty() && name_t[prfx_i] == '/'; }
00085       bool relative() const { return !empty() && name_t[prfx_i] != '/'; }
00086 
00088       Pathname dirname() const { return dirname( *this ); }
00089       static Pathname dirname( const Pathname & name_tv );
00090 
00092       std::string basename() const { return basename( *this ); }
00093       static std::string basename( const Pathname & name_tv );
00094 
00096       Pathname absolutename() const { return absolutename( *this ); }
00097       static Pathname absolutename( const Pathname & name_tv )
00098       { return name_tv.relative() ? cat( "/", name_tv ) : name_tv; }
00099 
00101       Pathname relativename() const { return relativename( *this ); }
00102       static Pathname relativename( const Pathname & name_tv )
00103       { return name_tv.absolute() ? cat( ".", name_tv ) : name_tv; }
00104 
00113       Pathname cat( const Pathname & r ) const { return cat( *this, r ); }
00114       static Pathname cat( const Pathname & l, const Pathname & r );
00115 
00121       Pathname extend( const std::string & r ) const { return extend( *this, r ); }
00122       static Pathname extend( const Pathname & l, const std::string & r );
00123 
00124     private:
00125       std::string::size_type prfx_i;
00126       std::string            name_t;
00127 
00128       void _assign( const std::string & name_tv );
00129     };
00131 
00133     inline bool operator==( const Pathname & l, const Pathname & r )
00134     { return l.asString() == r.asString(); }
00135 
00137     inline bool operator!=( const Pathname & l, const Pathname & r )
00138     { return l.asString() != r.asString(); }
00139 
00141     inline Pathname operator/( const Pathname & l, const Pathname & r )
00142     { return Pathname::cat( l, r ); }
00143 
00147     inline Pathname operator+( const Pathname & l, const Pathname & r )
00148     { return Pathname::cat( l, r ); }
00149 
00151 
00153     inline std::ostream & operator<<( std::ostream & str, const Pathname & obj )
00154     { return str << obj.asString(); }
00155 
00157   } // namespace filesystem
00159 
00161   using filesystem::Pathname;
00162 
00164 } // namespace zypp
00166 #endif // ZYPP_PATHNAME_H

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