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[wxWidgets.git] / src / common / dircmn.cpp

diff --git a/src/common/dircmn.cpp b/src/common/dircmn.cpp
index dc0b24bbc12b3d4bc6c60ffacf6dda9bb1e837d1..8b5b453db056951d39ca9031bfac3e2f2025c909 100644 (file)
--- a/src/common/dircmn.cpp
+++ b/src/common/dircmn.cpp
@@ -6,7 +6,7 @@
 // Created:     19.05.01
 // RCS-ID:      $Id$
 // Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
 // Created:     19.05.01
 // RCS-ID:      $Id$
 // Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>

-// License:     wxWindows license
+// License:     wxWindows licence

 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================


@@ -17,12 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-/* this is done in platform-specific files
-#ifdef __GNUG__
-    #pragma implementation "dir.h"
-#endif
-*/
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 


@@ -35,30 +29,42 @@
     #include "wx/log.h"
     #include "wx/intl.h"
     #include "wx/filefn.h"
     #include "wx/log.h"
     #include "wx/intl.h"
     #include "wx/filefn.h"

+    #include "wx/arrstr.h"

 #endif //WX_PRECOMP
 
 #include "wx/dir.h"
 #endif //WX_PRECOMP
 
 #include "wx/dir.h"

+#include "wx/filename.h"

 
 // ============================================================================
 // implementation
 // ============================================================================
 
 
 // ============================================================================
 // implementation
 // ============================================================================
 

+// ----------------------------------------------------------------------------
+// wxDirTraverser
+// ----------------------------------------------------------------------------
+
+wxDirTraverseResult
+wxDirTraverser::OnOpenError(const wxString& WXUNUSED(dirname))
+{
+    return wxDIR_IGNORE;
+}
+

 // ----------------------------------------------------------------------------
 // wxDir::HasFiles() and HasSubDirs()
 // ----------------------------------------------------------------------------
 
 // dumb generic implementation
 
 // ----------------------------------------------------------------------------
 // wxDir::HasFiles() and HasSubDirs()
 // ----------------------------------------------------------------------------
 
 // dumb generic implementation
 

-bool wxDir::HasFiles(const wxString& spec)
+bool wxDir::HasFiles(const wxString& spec) const

 {
     wxString s;
     return GetFirst(&s, spec, wxDIR_FILES | wxDIR_HIDDEN);
 }
 
 // we have a (much) faster version for Unix
 {
     wxString s;
     return GetFirst(&s, spec, wxDIR_FILES | wxDIR_HIDDEN);
 }
 
 // we have a (much) faster version for Unix

-#if (defined(__CYGWIN__) && defined(__WINDOWS__)) || !defined(__UNIX_LIKE__) || defined(__WXMAC__)
+#if (defined(__CYGWIN__) && defined(__WINDOWS__)) || !defined(__UNIX_LIKE__) || defined(__EMX__) || defined(__WINE__)

 
 

-bool wxDir::HasSubDirs(const wxString& spec)
+bool wxDir::HasSubDirs(const wxString& spec) const

 {
     wxString s;
     return GetFirst(&s, spec, wxDIR_DIRS | wxDIR_HIDDEN);
 {
     wxString s;
     return GetFirst(&s, spec, wxDIR_DIRS | wxDIR_HIDDEN);


@@ -88,29 +94,75 @@ size_t wxDir::Traverse(wxDirTraverser& sink,
     if ( flags & wxDIR_DIRS )
     {
         wxString dirname;
     if ( flags & wxDIR_DIRS )
     {
         wxString dirname;

-        bool cont = GetFirst(&dirname, _T(""), wxDIR_DIRS | wxDIR_HIDDEN);
-        while ( cont )
+        for ( bool cont = GetFirst(&dirname, wxEmptyString, wxDIR_DIRS | (flags & wxDIR_HIDDEN) );
+              cont;
+              cont = cont && GetNext(&dirname) )

         {
         {

-            wxDirTraverseResult res = sink.OnDir(prefix + dirname);
+            const wxString fulldirname = prefix + dirname;

 
 

-            if ( res == wxDIR_STOP )
-                break;
-
-            if ( res == wxDIR_CONTINUE )
-            {
-                wxDir subdir(prefix + dirname);
-                if ( subdir.IsOpened() )
-                {
-                    nFiles += subdir.Traverse(sink, filespec, flags);
-                }
-            }
-            else
+            switch ( sink.OnDir(fulldirname) )

             {
             {

-                wxASSERT_MSG( res == wxDIR_IGNORE,
-                              _T("unexpected OnDir() return value") );
+                default:
+                    wxFAIL_MSG(_T("unexpected OnDir() return value") );
+                    // fall through
+
+                case wxDIR_STOP:
+                    cont = false;
+                    break;
+
+                case wxDIR_CONTINUE:
+                    {
+                        wxDir subdir;
+
+                        // don't give the error messages for the directories
+                        // which we can't open: there can be all sorts of good
+                        // reason for this (e.g. insufficient privileges) and
+                        // this shouldn't be treated as an error -- instead
+                        // let the user code decide what to do
+                        bool ok;
+                        do
+                        {
+                            wxLogNull noLog;
+                            ok = subdir.Open(fulldirname);
+                            if ( !ok )
+                            {
+                                // ask the user code what to do
+                                bool tryagain;
+                                switch ( sink.OnOpenError(fulldirname) )
+                                {
+                                    default:
+                                        wxFAIL_MSG(_T("unexpected OnOpenError() return value") );
+                                        // fall through
+
+                                    case wxDIR_STOP:
+                                        cont = false;
+                                        // fall through
+
+                                    case wxDIR_IGNORE:
+                                        tryagain = false;
+                                        break;
+
+                                    case wxDIR_CONTINUE:
+                                        tryagain = true;
+                                }
+
+                                if ( !tryagain )
+                                    break;
+                            }
+                        }
+                        while ( !ok );
+
+                        if ( ok )
+                        {
+                            nFiles += subdir.Traverse(sink, filespec, flags);
+                        }
+                    }
+                    break;
+
+                case wxDIR_IGNORE:
+                    // nothing to do
+                    ;

             }
             }

-
-            cont = GetNext(&dirname);

         }
     }
 
         }
     }
 


@@ -150,7 +202,7 @@ public:
 
     virtual wxDirTraverseResult OnFile(const wxString& filename)
     {
 
     virtual wxDirTraverseResult OnFile(const wxString& filename)
     {

-        m_files.Add(filename);
+        m_files.push_back(filename);

         return wxDIR_CONTINUE;
     }
 
         return wxDIR_CONTINUE;
     }
 


@@ -161,6 +213,8 @@ public:
 
 private:
     wxArrayString& m_files;
 
 private:
     wxArrayString& m_files;

+
+    DECLARE_NO_COPY_CLASS(wxDirTraverserSimple)

 };
 
 /* static */
 };
 
 /* static */


@@ -184,3 +238,123 @@ size_t wxDir::GetAllFiles(const wxString& dirname,
     return nFiles;
 }
 
     return nFiles;
 }
 

+// ----------------------------------------------------------------------------
+// wxDir::FindFirst()
+// ----------------------------------------------------------------------------
+
+class wxDirTraverserFindFirst : public wxDirTraverser
+{
+public:
+    wxDirTraverserFindFirst() { }
+
+    virtual wxDirTraverseResult OnFile(const wxString& filename)
+    {
+        m_file = filename;
+        return wxDIR_STOP;
+    }
+
+    virtual wxDirTraverseResult OnDir(const wxString& WXUNUSED(dirname))
+    {
+        return wxDIR_CONTINUE;
+    }
+
+    const wxString& GetFile() const
+    {
+        return m_file;
+    }
+
+private:
+    wxString m_file;
+
+    DECLARE_NO_COPY_CLASS(wxDirTraverserFindFirst)
+};
+
+/* static */
+wxString wxDir::FindFirst(const wxString& dirname,
+                          const wxString& filespec,
+                          int flags)
+{
+    wxDir dir(dirname);
+    if ( dir.IsOpened() )
+    {
+        wxDirTraverserFindFirst traverser;
+
+        dir.Traverse(traverser, filespec, flags | wxDIR_FILES);
+        return traverser.GetFile();
+    }
+
+    return wxEmptyString;
+}
+
+
+// ----------------------------------------------------------------------------
+// wxDir::GetTotalSize()
+// ----------------------------------------------------------------------------
+
+#if wxUSE_LONGLONG
+
+class wxDirTraverserSumSize : public wxDirTraverser
+{
+public:
+    wxDirTraverserSumSize() { }
+
+    virtual wxDirTraverseResult OnFile(const wxString& filename)
+    {
+        wxULongLong sz = wxFileName::GetSize(filename);
+
+        // wxFileName::GetSize won't use this class again as
+        // we're passing it a file and not a directory;
+        // thus we are sure to avoid an endless loop
+        if (sz == wxInvalidSize)
+        {
+            // if the GetSize() failed (this can happen because e.g. a
+            // file is locked by another process), we can proceed but
+            // we need to at least warn the user that the resulting
+            // final size could be not reliable (if e.g. the locked
+            // file is very big).
+            m_skippedFiles.Add(filename);
+            return wxDIR_CONTINUE;
+        }
+
+        m_sz += sz;
+        return wxDIR_CONTINUE;
+    }
+
+    virtual wxDirTraverseResult OnDir(const wxString& WXUNUSED(dirname))
+    {
+        return wxDIR_CONTINUE;
+    }
+
+    wxULongLong GetTotalSize() const
+        { return m_sz; }
+    wxArrayString &FilesSkipped()
+        { return m_skippedFiles; }
+
+protected:
+    wxULongLong m_sz;
+    wxArrayString m_skippedFiles;
+};
+
+wxULongLong wxDir::GetTotalSize(const wxString &dirname, wxArrayString *filesSkipped)
+{
+    if (!wxDirExists(dirname))
+        return wxInvalidSize;
+
+    // to get the size of this directory and its contents we need
+    // to recursively walk it...
+    wxDir dir(dirname);
+    if ( !dir.IsOpened() )
+        return wxInvalidSize;
+
+    wxDirTraverserSumSize traverser;
+    if (dir.Traverse(traverser) == (size_t)-1 ||
+        traverser.GetTotalSize() == 0)
+        return wxInvalidSize;
+
+    if (filesSkipped)
+        *filesSkipped = traverser.FilesSkipped();
+
+    return traverser.GetTotalSize();
+}
+
+#endif // wxUSE_LONGLONG