1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/unix/dir.cpp
3 // Purpose: wxDir implementation for Unix/POSIX systems
4 // Author: Vadim Zeitlin
7 // Copyright: (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
8 // Licence: wxWindows licence
9 /////////////////////////////////////////////////////////////////////////////
11 // ============================================================================
13 // ============================================================================
15 // ----------------------------------------------------------------------------
17 // ----------------------------------------------------------------------------
19 // For compilers that support precompilation, includes "wx.h".
20 #include "wx/wxprec.h"
32 #include "wx/filefn.h" // for wxMatchWild
33 #include "wx/filename.h"
35 #include <sys/types.h>
41 // ----------------------------------------------------------------------------
43 // ----------------------------------------------------------------------------
45 #define M_DIR ((wxDirData *)m_data)
47 // ----------------------------------------------------------------------------
49 // ----------------------------------------------------------------------------
51 // this class stores everything we need to enumerate the files
55 wxDirData(const wxString
& dirname
);
58 bool IsOk() const { return m_dir
!= NULL
; }
60 void SetFileSpec(const wxString
& filespec
) { m_filespec
= filespec
; }
61 void SetFlags(int flags
) { m_flags
= flags
; }
63 void Rewind() { rewinddir(m_dir
); }
64 bool Read(wxString
*filename
);
66 const wxString
& GetName() const { return m_dirname
; }
77 // ============================================================================
79 // ============================================================================
81 // ----------------------------------------------------------------------------
83 // ----------------------------------------------------------------------------
85 #if !defined( __VMS__ ) || ( __VMS_VER >= 70000000 )
87 wxDirData::wxDirData(const wxString
& dirname
)
92 // throw away the trailing slashes
93 size_t n
= m_dirname
.length();
94 wxCHECK_RET( n
, wxT("empty dir name in wxDir") );
96 while ( n
> 0 && m_dirname
[--n
] == '/' )
99 m_dirname
.Truncate(n
+ 1);
102 m_dir
= opendir(m_dirname
.fn_str());
105 wxDirData::~wxDirData()
109 if ( closedir(m_dir
) != 0 )
111 wxLogLastError(wxT("closedir"));
116 bool wxDirData::Read(wxString
*filename
)
118 dirent
*de
= NULL
; // just to silence compiler warnings
119 bool matches
= false;
121 // speed up string concatenation in the loop a bit
122 wxString path
= m_dirname
;
124 path
.reserve(path
.length() + 255);
135 de_d_name
= wxString(de
->d_name
, *wxConvFileName
);
137 de_d_name
= de
->d_name
;
140 // don't return "." and ".." unless asked for
141 if ( de
->d_name
[0] == '.' &&
142 ((de
->d_name
[1] == '.' && de
->d_name
[2] == '\0') ||
143 (de
->d_name
[1] == '\0')) )
145 if ( !(m_flags
& wxDIR_DOTDOT
) )
148 // we found a valid match
152 // check the type now: notice that we may want to check the type of
153 // the path itself and not whatever it points to in case of a symlink
154 wxFileName fn
= wxFileName::DirName(path
+ de_d_name
);
155 if ( m_flags
& wxDIR_NO_FOLLOW
)
160 if ( !(m_flags
& wxDIR_FILES
) && !fn
.DirExists() )
162 // it's a file, but we don't want them
165 else if ( !(m_flags
& wxDIR_DIRS
) && fn
.DirExists() )
167 // it's a dir, and we don't want it
171 // finally, check the name
172 if ( m_filespec
.empty() )
174 matches
= m_flags
& wxDIR_HIDDEN
? true : de
->d_name
[0] != '.';
178 // test against the pattern
179 matches
= wxMatchWild(m_filespec
, de_d_name
,
180 !(m_flags
& wxDIR_HIDDEN
));
184 *filename
= de_d_name
;
189 #else // old VMS (TODO)
191 wxDirData::wxDirData(const wxString
& WXUNUSED(dirname
))
193 wxFAIL_MSG(wxT("not implemented"));
196 wxDirData::~wxDirData()
200 bool wxDirData::Read(wxString
* WXUNUSED(filename
))
205 #endif // not or new VMS/old VMS
207 // ----------------------------------------------------------------------------
208 // wxDir construction/destruction
209 // ----------------------------------------------------------------------------
211 wxDir::wxDir(const wxString
& dirname
)
218 bool wxDir::Open(const wxString
& dirname
)
221 m_data
= new wxDirData(dirname
);
223 if ( !M_DIR
->IsOk() )
234 bool wxDir::IsOpened() const
236 return m_data
!= NULL
;
239 wxString
wxDir::GetName() const
244 name
= M_DIR
->GetName();
246 // Notice that we need to check for length > 1 as we shouldn't remove
247 // the last slash from the root directory!
248 if ( name
.length() > 1 && (name
.Last() == wxT('/')) )
250 // chop off the last slash
267 // ----------------------------------------------------------------------------
269 // ----------------------------------------------------------------------------
271 bool wxDir::GetFirst(wxString
*filename
,
272 const wxString
& filespec
,
275 wxCHECK_MSG( IsOpened(), false, wxT("must wxDir::Open() first") );
279 M_DIR
->SetFileSpec(filespec
);
280 M_DIR
->SetFlags(flags
);
282 return GetNext(filename
);
285 bool wxDir::GetNext(wxString
*filename
) const
287 wxCHECK_MSG( IsOpened(), false, wxT("must wxDir::Open() first") );
289 wxCHECK_MSG( filename
, false, wxT("bad pointer in wxDir::GetNext()") );
291 return M_DIR
->Read(filename
);
294 bool wxDir::HasSubDirs(const wxString
& spec
) const
296 wxCHECK_MSG( IsOpened(), false, wxT("must wxDir::Open() first") );
300 // faster check for presence of any subdirectory: normally each subdir
301 // has a hard link to the parent directory and so, knowing that there
302 // are at least "." and "..", we have a subdirectory if and only if
303 // links number is > 2 - this is just a guess but it works fairly well
306 // note that we may guess wrongly in one direction only: i.e. we may
307 // return true when there are no subdirectories but this is ok as the
308 // caller will learn it soon enough when it calls GetFirst(wxDIR)
311 if ( wxStat(M_DIR
->GetName(), &stBuf
) == 0 )
313 switch ( stBuf
.st_nlink
)
321 // weird filesystem, don't try to guess for it, use dumb
326 // assume we have subdirs - may turn out to be wrong if we
327 // have other hard links to this directory but it's not
328 // that bad as explained above
334 // just try to find first directory
336 return GetFirst(&s
, spec
, wxDIR_DIRS
| wxDIR_HIDDEN
);