source: NonGTP/Boost/boost/filesystem/path.hpp @ 857

Revision 857, 6.4 KB checked in by igarcia, 19 years ago (diff)
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[857]1//  boost/filesystem/path.hpp  -----------------------------------------------//
2
3//  © Copyright Beman Dawes 2002-2003
4//  Use, modification, and distribution is subject to the Boost Software
5//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
6//  http://www.boost.org/LICENSE_1_0.txt)
7
8//  See library home page at http://www.boost.org/libs/filesystem
9
10//----------------------------------------------------------------------------//
11
12#ifndef BOOST_FILESYSTEM_PATH_HPP
13#define BOOST_FILESYSTEM_PATH_HPP
14
15#include <boost/filesystem/config.hpp>
16#include <boost/iterator/iterator_facade.hpp>
17#include <string>
18#include <cassert>
19
20#include <boost/config/abi_prefix.hpp> // must be the last header
21
22//----------------------------------------------------------------------------//
23
24namespace boost
25{
26  namespace filesystem
27  {
28    class directory_iterator;
29
30
31  //  path -------------------------------------------------------------------//
32
33    class BOOST_FILESYSTEM_DECL path
34    {
35    public:
36      typedef bool (*name_check)( const std::string & name );
37
38      // compiler generates copy constructor, copy assignment, and destructor
39
40      path(){}
41
42      path( const std::string & src );
43      path( const char * src );
44
45      path( const std::string & src, name_check checker );
46      path( const char * src, name_check checker );
47
48      // append operations:
49      path & operator /=( const path & rhs );
50      path operator /( const path & rhs ) const
51        { return path( *this ) /= rhs; }
52
53      // modification functions:
54      path & normalize();
55
56      // conversion functions:
57      const std::string & string() const { return m_path; }
58      std::string native_file_string() const;
59      std::string native_directory_string() const;
60
61      // decomposition functions:
62      path         root_path() const;
63      std::string  root_name() const;
64      std::string  root_directory() const;
65      path         relative_path() const;
66      std::string  leaf() const;
67      path         branch_path() const;
68
69      // query functions:
70      bool empty() const { return m_path.empty(); } // name consistent with std containers
71
72      bool is_complete() const;
73
74      bool has_root_path() const;
75      bool has_root_name() const;
76      bool has_root_directory() const;
77      bool has_relative_path() const;
78      bool has_leaf() const { return !m_path.empty(); }
79      bool has_branch_path() const;
80
81      // iteration over the names in the path:
82      class iterator : public boost::iterator_facade<
83        iterator,
84        std::string const,
85        boost::bidirectional_traversal_tag >
86      {
87      private:
88        friend class boost::iterator_core_access;
89        friend class boost::filesystem::path;
90
91        reference dereference() const { return m_name; }
92        bool equal( const iterator & rhs ) const
93          { return m_path_ptr == rhs.m_path_ptr && m_pos == rhs.m_pos; }
94        BOOST_FILESYSTEM_DECL void increment();
95        BOOST_FILESYSTEM_DECL void decrement();
96
97        std::string             m_name;     // cache current element.
98        const path *            m_path_ptr; // path being iterated over.
99        std::string::size_type  m_pos;      // position of name in
100                                            // path_ptr->string(). The
101                                            // end() iterator is indicated by
102                                            // pos == path_ptr->string().size()
103      };
104
105      iterator begin() const;
106      iterator end() const
107      {
108        iterator itr;
109        itr.m_path_ptr = this;
110        itr.m_pos = m_path.size();
111        return itr;
112      }
113
114      // default name_check mechanism:
115      static bool default_name_check_writable();
116      static void default_name_check( name_check new_check );
117      static name_check default_name_check();
118
119      // relational operators
120      bool operator<( const path & that ) const;
121      bool operator==( const path & that ) const { return !(*this < that) && !(that < *this); }
122      bool operator!=( const path & that ) const { return !(*this == that); }
123      bool operator>( const path & that ) const  { return that < *this; }
124      bool operator<=( const path & that ) const { return !(that < *this); }
125      bool operator>=( const path & that ) const { return !(*this < that); }
126
127    private:
128      // Note: This is an implementation for POSIX and Windows, where there
129      // are only minor differences between generic and system-specific
130      // constructor input formats.  Private members might be quite different
131      // in other implementations, particularly where there were wide
132      // differences between generic and system-specific argument formats,
133      // or between native_file_string() and native_directory_string() formats.
134
135      std::string  m_path;
136
137      friend class directory_iterator;
138      // Was qualified; como433beta8 reports:
139      //    warning #427-D: qualified name is not allowed in member declaration
140      friend class iterator;
141
142    public: // should be private, but friend functions don't work for me
143      void m_path_append( const std::string & src, name_check checker );
144      void m_replace_leaf( const char * new_leaf );
145    };
146
147  //  path non-member functions  ---------------------------------------------//
148
149    inline path operator / ( const char * lhs, const path & rhs )
150      { return path( lhs ) /= rhs; }
151
152    inline path operator / ( const std::string & lhs, const path & rhs )
153      { return path( lhs ) /= rhs; }
154   
155  //  path::name_checks  ---------------------------------------------------//
156
157    BOOST_FILESYSTEM_DECL bool portable_posix_name( const std::string & name );
158    BOOST_FILESYSTEM_DECL bool windows_name( const std::string & name );
159    BOOST_FILESYSTEM_DECL bool portable_name( const std::string & name );
160    BOOST_FILESYSTEM_DECL bool portable_directory_name( const std::string & name );
161    BOOST_FILESYSTEM_DECL bool portable_file_name( const std::string & name );
162    BOOST_FILESYSTEM_DECL bool no_check( const std::string & name );   // always returns true
163    BOOST_FILESYSTEM_DECL bool native( const std::string & name );
164      // native(name) must return true for any name which MIGHT be valid
165      // on the native platform.
166
167  } // namespace filesystem
168} // namespace boost
169
170#include <boost/config/abi_suffix.hpp> // pops abi_suffix.hpp pragmas
171#endif // BOOST_FILESYSTEM_PATH_HPP
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