// Created: 08.12.99
// RCS-ID: $Id$
// Copyright: (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
- #pragma implementation "dir.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#include "wx/filefn.h" // for wxMatchWild
#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
#include <dirent.h>
void Rewind() { rewinddir(m_dir); }
bool Read(wxString *filename);
+ const wxString& GetName() const { return m_dirname; }
+
private:
DIR *m_dir;
bool wxDirData::Read(wxString *filename)
{
- dirent *de = (dirent *)NULL; // just to silent compiler warnings
- bool matches = FALSE;
+ dirent *de = (dirent *)NULL; // just to silence compiler warnings
+ bool matches = false;
+
+ // speed up string concatenation in the loop a bit
+ wxString path = m_dirname;
+ path += _T('/');
+ path.reserve(path.length() + 255);
+
+ wxString de_d_name;
while ( !matches )
{
de = readdir(m_dir);
if ( !de )
- return FALSE;
+ return false;
+
+#if wxUSE_UNICODE
+ de_d_name = wxString(de->d_name, *wxConvFileName);
+#else
+ de_d_name = de->d_name;
+#endif
// don't return "." and ".." unless asked for
if ( de->d_name[0] == '.' &&
{
if ( !(m_flags & wxDIR_DOTDOT) )
continue;
+
+ // we found a valid match
+ break;
}
// check the type now
- if ( !(m_flags & wxDIR_FILES) &&
- !wxDir::Exists(m_dirname + _T('/') + de->d_name) )
+ if ( !(m_flags & wxDIR_FILES) && !wxDir::Exists(path + de_d_name) )
{
// it's a file, but we don't want them
continue;
}
- else if ( !(m_flags & wxDIR_DIRS) &&
- wxDir::Exists(m_dirname + _T('/') + de->d_name) )
+ else if ( !(m_flags & wxDIR_DIRS) && wxDir::Exists(path + de_d_name) )
{
// it's a dir, and we don't want it
continue;
}
// finally, check the name
- if ( !m_filespec )
+ if ( m_filespec.empty() )
{
- matches = m_flags & wxDIR_HIDDEN ? TRUE : de->d_name[0] != '.';
+ matches = m_flags & wxDIR_HIDDEN ? true : de->d_name[0] != '.';
}
else
{
// test against the pattern
- matches = wxMatchWild(m_filespec, de->d_name,
+ matches = wxMatchWild(m_filespec, de_d_name,
!(m_flags & wxDIR_HIDDEN));
}
}
- *filename = de->d_name;
+ *filename = de_d_name;
- return TRUE;
+ return true;
}
#else // old VMS (TODO)
bool wxDirData::Read(wxString * WXUNUSED(filename))
{
- return FALSE;
+ return false;
}
#endif // not or new VMS/old VMS
/* static */
bool wxDir::Exists(const wxString& dir)
{
- return wxPathExists(dir);
+ return wxDirExists(dir);
}
// ----------------------------------------------------------------------------
delete M_DIR;
m_data = NULL;
- return FALSE;
+ return false;
}
- return TRUE;
+ return true;
}
bool wxDir::IsOpened() const
return m_data != NULL;
}
+wxString wxDir::GetName() const
+{
+ wxString name;
+ if ( m_data )
+ {
+ name = M_DIR->GetName();
+ if ( !name.empty() && (name.Last() == _T('/')) )
+ {
+ // chop off the last (back)slash
+ name.Truncate(name.length() - 1);
+ }
+ }
+
+ return name;
+}
+
wxDir::~wxDir()
{
delete M_DIR;
const wxString& filespec,
int flags) const
{
- wxCHECK_MSG( IsOpened(), FALSE, _T("must wxDir::Open() first") );
+ wxCHECK_MSG( IsOpened(), false, _T("must wxDir::Open() first") );
M_DIR->Rewind();
bool wxDir::GetNext(wxString *filename) const
{
- wxCHECK_MSG( IsOpened(), FALSE, _T("must wxDir::Open() first") );
+ wxCHECK_MSG( IsOpened(), false, _T("must wxDir::Open() first") );
- wxCHECK_MSG( filename, FALSE, _T("bad pointer in wxDir::GetNext()") );
+ wxCHECK_MSG( filename, false, _T("bad pointer in wxDir::GetNext()") );
return M_DIR->Read(filename);
}
+
+bool wxDir::HasSubDirs(const wxString& spec)
+{
+ wxCHECK_MSG( IsOpened(), false, _T("must wxDir::Open() first") );
+
+ if ( spec.empty() )
+ {
+ // faster check for presence of any subdirectory: normally each subdir
+ // has a hard link to the parent directory and so, knowing that there
+ // are at least "." and "..", we have a subdirectory if and only if
+ // links number is > 2 - this is just a guess but it works fairly well
+ // in practice
+ //
+ // note that we may guess wrongly in one direction only: i.e. we may
+ // return true when there are no subdirectories but this is ok as the
+ // caller will learn it soon enough when it calls GetFirst(wxDIR)
+ // anyhow
+ wxStructStat stBuf;
+ if ( wxStat(M_DIR->GetName().c_str(), &stBuf) == 0 )
+ {
+ switch ( stBuf.st_nlink )
+ {
+ case 2:
+ // just "." and ".."
+ return false;
+
+ case 0:
+ case 1:
+ // weird filesystem, don't try to guess for it, use dumb
+ // method below
+ break;
+
+ default:
+ // assume we have subdirs - may turn out to be wrong if we
+ // have other hard links to this directory but it's not
+ // that bad as explained above
+ return true;
+ }
+ }
+ }
+
+ // just try to find first directory
+ wxString s;
+ return GetFirst(&s, spec, wxDIR_DIRS | wxDIR_HIDDEN);
+}
+
projects / wxWidgets.git / blobdiff