]> git.saurik.com Git - wxWidgets.git/blobdiff - src/unix/mimetype.cpp
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[wxWidgets.git] / src / unix / mimetype.cpp
index e4700da3006a525dd6eac57cdce49c7fe1e937c5..deedf1062ef21e7cbce11d29796c9d3428ac810e 100644 (file)
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        unix/mimetype.cpp
+// Name:        src/unix/mimetype.cpp
 // Purpose:     classes and functions to manage MIME types
 // Author:      Vadim Zeitlin
 // Modified by:
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
-  #pragma hdrstop
-#endif
-
-#ifndef WX_PRECOMP
-  #include "wx/defs.h"
+    #pragma hdrstop
 #endif
 
 #if wxUSE_MIMETYPE && wxUSE_FILE && wxUSE_TEXTFILE
 
+#include "wx/unix/mimetype.h"
+
 #ifndef WX_PRECOMP
-  #include "wx/string.h"
+    #include "wx/dynarray.h"
+    #include "wx/string.h"
+    #include "wx/intl.h"
+    #include "wx/log.h"
+    #include "wx/utils.h"
 #endif
 
-#include "wx/log.h"
 #include "wx/file.h"
-#include "wx/intl.h"
-#include "wx/dynarray.h"
 #include "wx/confbase.h"
 
 #include "wx/ffile.h"
 #include "wx/textfile.h"
 #include "wx/dir.h"
-#include "wx/utils.h"
 #include "wx/tokenzr.h"
 #include "wx/iconloc.h"
 #include "wx/filename.h"
 
-#include "wx/unix/mimetype.h"
+#if wxUSE_LIBGNOMEVFS
+    // Not GUI dependent
+    #include "wx/gtk/gnome/gvfs.h"
+#endif
 
 // other standard headers
 #include <ctype.h>
 
-#ifdef __VMS
-/* silence warnings for comparing unsigned int's <0 */
-# pragma message disable unscomzer
-#endif
-
-// wxMimeTypeCommands stores the verbs defined for the given MIME type with
-// their values
-class wxMimeTypeCommands
-{
-public:
-    wxMimeTypeCommands() {}
-
-    wxMimeTypeCommands(const wxArrayString& verbs,
-                       const wxArrayString& commands)
-        : m_verbs(verbs),
-          m_commands(commands)
-    {
-    }
-
-    // add a new verb with the command or replace the old value
-    void AddOrReplaceVerb(const wxString& verb, const wxString& cmd)
-    {
-        int n = m_verbs.Index(verb, false /* ignore case */);
-        if ( n == wxNOT_FOUND )
-        {
-            m_verbs.Add(verb);
-            m_commands.Add(cmd);
-        }
-        else
-        {
-            m_commands[n] = cmd;
-        }
-    }
-
-    void Add(const wxString& s)
-    {
-        m_verbs.Add(s.BeforeFirst(wxT('=')));
-        m_commands.Add(s.AfterFirst(wxT('=')));
-    }
-
-    // access the commands
-    size_t GetCount() const { return m_verbs.GetCount(); }
-    const wxString& GetVerb(size_t n) const { return m_verbs[n]; }
-    const wxString& GetCmd(size_t n) const { return m_commands[n]; }
-
-    bool HasVerb(const wxString& verb) const
-        { return m_verbs.Index(verb) != wxNOT_FOUND; }
-
-    wxString GetCommandForVerb(const wxString& verb, size_t *idx = NULL) const
-    {
-        wxString s;
-
-        int n = m_verbs.Index(verb);
-        if ( n != wxNOT_FOUND )
-        {
-            s = m_commands[(size_t)n];
-            if ( idx )
-                *idx = n;
-        }
-        else if ( idx )
-        {
-            // different from any valid index
-            *idx = (size_t)-1;
-        }
-
-        return s;
-    }
-
-    // get a "verb=command" string
-    wxString GetVerbCmd(size_t n) const
-    {
-        return m_verbs[n] + wxT('=') + m_commands[n];
-    }
-
-private:
-    wxArrayString m_verbs;
-    wxArrayString m_commands;
-};
-
 // this class extends wxTextFile
 //
 // VZ: ???
@@ -349,206 +271,16 @@ static bool IsKnownUnimportantField(const wxString& field);
 //  1. xxx.keys files under /usr/share/mime-info
 //  2. xxx.keys files under ~/.gnome/mime-info
 //
-// The format of xxx.keys file is the following:
-//
-// mimetype/subtype:
-//      field=value
-//
-// with blank lines separating the entries and indented lines starting with
-// TABs. We're interested in the field icon-filename whose value is the path
-// containing the icon.
-//
 // Update (Chris Elliott): apparently there may be an optional "[lang]" prefix
 // just before the field name.
 
 
-bool wxMimeTypesManagerImpl::CheckGnomeDirsExist()
-{
-    wxString gnomedir;
-    wxGetHomeDir( &gnomedir );
-    wxString sTmp = gnomedir;
-    sTmp = sTmp + wxT("/.gnome");
-    if (! wxDir::Exists( sTmp ) )
-    {
-        if (!wxMkdir( sTmp ))
-        {
-            wxLogError(wxT("Failed to create directory %s/.gnome."), sTmp.c_str());
-            return false;
-        }
-    }
-
-    sTmp = sTmp + wxT("/mime-info");
-    if (! wxDir::Exists( sTmp ) )
-    {
-        if (!wxMkdir( sTmp ))
-        {
-            wxLogError(wxT("Failed to create directory %s/mime-info."), sTmp.c_str());
-            return false;
-        }
-    }
-
-    return true;
-}
-
-bool wxMimeTypesManagerImpl::WriteGnomeKeyFile(int index, bool delete_index)
-{
-    wxString gnomedir;
-    wxGetHomeDir( &gnomedir );
-
-    wxMimeTextFile outfile( gnomedir + wxT("/.gnome/mime-info/user.keys"));
-    // if this fails probably Gnome is not installed ??
-    // create it anyway as a private mime store
-
-#if defined(__WXGTK20__) && wxUSE_UNICODE
-    if (! outfile.Open( wxConvUTF8) )
-#else
-    if (! outfile.Open() )
-#endif
-    {
-        if (delete_index)
-            return false;
-        if (!CheckGnomeDirsExist() )
-            return false;
-
-        outfile.Create();
-    }
-
-    wxString sTmp, strType = m_aTypes[index];
-    int nIndex = outfile.pIndexOf(strType);
-    if ( nIndex == wxNOT_FOUND )
-    {
-        outfile.AddLine( strType + wxT(':') );
-        // see file:/usr/doc/gnome-libs-devel-1.0.40/devel-docs/mime-type-handling.txt
-        // as this does not deal with internationalisation
-        //        wxT( "\t[en_US]") + verb + wxT ('=') + cmd + wxT(" %f");
-        wxMimeTypeCommands * entries = m_aEntries[index];
-        size_t count = entries->GetCount();
-        for ( size_t i = 0; i < count; i++ )
-        {
-            sTmp = entries->GetVerbCmd( i );
-            sTmp.Replace( wxT("%s"), wxT("%f") );
-            sTmp = wxT( "\t") + sTmp;
-            outfile.AddLine( sTmp );
-        }
-
-        //for international use do something like this
-        //outfile.AddLine( wxString( "\t[en_US]icon-filename=") + cmd );
-        outfile.AddLine( wxT( "\ticon-filename=") + m_aIcons[index] );
-    }
-    else
-    {
-        if (delete_index)
-            outfile.CommentLine(nIndex);
-
-        wxMimeTypeCommands sOld;
-        size_t nOld = nIndex + 1;
-        bool oldEntryEnd = false;
-        while ( (nOld < outfile.GetLineCount() ) && !oldEntryEnd)
-        {
-            sTmp = outfile.GetLine(nOld);
-            if ( (sTmp[0u] == wxT('\t')) || (sTmp[0u] == wxT('#')) )
-            {
-                // we have another line to deal with
-                outfile.CommentLine(nOld);
-                nOld++;
-
-                // add the line to our store
-                if ((!delete_index) && (sTmp[0u] == wxT('\t')))
-                    sOld.Add(sTmp);
-            }
-            // next mimetpye ?? or blank line
-            else
-                oldEntryEnd = true;
-        }
-
-        // list of entries in our data; these should all be in sOld,
-        // though sOld may also contain other entries , eg flags
-        if (!delete_index)
-        {
-            wxMimeTypeCommands * entries = m_aEntries[index];
-            size_t i;
-            for (i=0; i < entries->GetCount(); i++)
-            {
-                // replace any entries in sold that match verbs we know
-                sOld.AddOrReplaceVerb( entries->GetVerb(i), entries->GetCmd(i) );
-            }
-
-            //sOld should also contain the icon
-            if ( !m_aIcons[index].empty() )
-                sOld.AddOrReplaceVerb( wxT("icon-filename"), m_aIcons[index] );
-
-            for (i=0; i < sOld.GetCount(); i++)
-            {
-                sTmp = sOld.GetVerbCmd( i );
-                sTmp.Replace( wxT("%s"), wxT("%f") );
-                sTmp = wxT("\t") + sTmp;
-                nIndex++;
-                outfile.InsertLine( sTmp, nIndex );
-            }
-        }
-    }
-
-    bool bTmp = outfile.Write();
-    return bTmp;
-}
-
-bool wxMimeTypesManagerImpl::WriteGnomeMimeFile(int index, bool delete_index)
-{
-    wxString gnomedir;
-    wxGetHomeDir( &gnomedir );
-
-    wxMimeTextFile outfile( gnomedir + wxT("/.gnome/mime-info/user.mime") );
-    // if this fails probably Gnome is not installed ??
-    // create it anyway as a private mime store
-    if (! outfile.Open() )
-    {
-        if (delete_index)
-            return false;
-        if (!CheckGnomeDirsExist() )
-            return false;
-
-        outfile.Create();
-    }
-
-    wxString strType = m_aTypes[index];
-    int nIndex = outfile.pIndexOf(strType);
-    if ( nIndex == wxNOT_FOUND )
-    {
-        outfile.AddLine( strType );
-        outfile.AddLine( wxT("\text:") + m_aExtensions.Item(index) );
-    }
-    else
-    {
-        if (delete_index)
-        {
-            outfile.CommentLine(nIndex);
-            outfile.CommentLine(nIndex + 1);
-        }
-        else
-        {
-            // check for next line being the right one to replace ??
-            wxString sOld = outfile.GetLine(nIndex + 1);
-            if (sOld.Contains( wxT("\text: ") ))
-            {
-                outfile.GetLine(nIndex + 1) = wxT("\text: ") + m_aExtensions.Item(index);
-            }
-            else
-            {
-                outfile.InsertLine( wxT("\text: ") + m_aExtensions.Item(index), nIndex + 1 );
-            }
-        }
-    }
-
-    bool bTmp = outfile.Write();
-    return bTmp;
-}
-
 void wxMimeTypesManagerImpl::LoadGnomeDataFromKeyFile(const wxString& filename,
                                                       const wxArrayString& dirs)
 {
     wxTextFile textfile(filename);
 #if defined(__WXGTK20__) && wxUSE_UNICODE
-    if ( !textfile.Open(wxConvUTF8) )
+    if ( !textfile.Open(wxMBConvUTF8(wxMBConvUTF8::MAP_INVALID_UTF8_TO_OCTAL)) )
 #else
     if ( !textfile.Open() )
 #endif
@@ -557,11 +289,12 @@ void wxMimeTypesManagerImpl::LoadGnomeDataFromKeyFile(const wxString& filename,
     wxLogTrace(TRACE_MIME, wxT("--- Opened Gnome file %s  ---"),
             filename.c_str());
 
+    wxArrayString search_dirs( dirs );
+
     // values for the entry being parsed
     wxString curMimeType, curIconFile;
     wxMimeTypeCommands * entry = new wxMimeTypeCommands;
 
-    // these are always empty in this file
     wxArrayString strExtensions;
     wxString strDesc;
 
@@ -577,52 +310,82 @@ void wxMimeTypesManagerImpl::LoadGnomeDataFromKeyFile(const wxString& filename,
             wxLogTrace(TRACE_MIME, wxT("--- Reading from Gnome file %s '%s' ---"),
                     filename.c_str(), pc);
 
+            // trim trailing space and tab
+            while ((*pc == wxT(' ')) || (*pc == wxT('\t')))
+                pc++;
+
             wxString sTmp(pc);
-            if (sTmp.Contains(wxT("=")) )
+            int equal_pos = sTmp.Find( wxT('=') );
+            if (equal_pos > 0)
             {
-                if (sTmp.Contains( wxT("icon-filename=") ) )
-                {
-                    // GNOME 1:
-                    curIconFile = sTmp.AfterFirst(wxT('='));
-                }
-                else if (sTmp.Contains( wxT("icon_filename=") ) )
+                wxString left_of_equal = sTmp.Left( equal_pos );
+                const wxChar *right_of_equal = pc;
+                right_of_equal += equal_pos+1;
+
+                if (left_of_equal == wxT("icon_filename"))
                 {
                     // GNOME 2:
-                    curIconFile = sTmp.AfterFirst(wxT('='));
+                    curIconFile = right_of_equal;
 
-                    if (!wxFileExists(curIconFile))
+                    wxFileName newFile( curIconFile );
+                    if (newFile.IsRelative() || newFile.FileExists())
                     {
-                        size_t nDirs = dirs.GetCount();
+                        size_t nDirs = search_dirs.GetCount();
+
                         for (size_t nDir = 0; nDir < nDirs; nDir++)
                         {
-                            wxFileName newFile( curIconFile );
-                            newFile.SetPath( dirs[nDir] );
+                            newFile.SetPath( search_dirs[nDir] );
                             newFile.AppendDir( wxT("pixmaps") );
                             newFile.AppendDir( wxT("document-icons") );
                             newFile.SetExt( wxT("png") );
                             if (newFile.FileExists())
+                            {
                                 curIconFile = newFile.GetFullPath();
+                                // reorder search_dirs for speedup (fewer
+                                // calls to FileExist() required)
+                                if (nDir != 0)
+                                {
+                                    const wxString &tmp = search_dirs[nDir];
+                                    search_dirs.RemoveAt( nDir );
+                                    search_dirs.Insert( tmp, 0 );
+                                }
+                                break;
+                            }
                         }
                     }
                 }
-                else //: some other field,
+                else if (left_of_equal == wxT("open"))
+                {
+                    sTmp = right_of_equal;
+                    sTmp.Replace( wxT("%f"), wxT("%s") );
+                    sTmp.Prepend( wxT("open=") );
+                    entry->Add(sTmp);
+                }
+                else if (left_of_equal == wxT("view"))
+                {
+                    sTmp = right_of_equal;
+                    sTmp.Replace( wxT("%f"), wxT("%s") );
+                    sTmp.Prepend( wxT("view=") );
+                    entry->Add(sTmp);
+                }
+                else if (left_of_equal == wxT("print"))
                 {
-                    //may contain lines like this (RH7)
-                    // \t[lang]open.tex."TeX this file"=tex %f
-                    // \tflags.tex.flags=needsterminal
-                    // \topen.latex."LaTeX this file"=latex %f
-                    // \tflags.latex.flags=needsterminal
-
-                    // \topen=xdvi %f
-                    // \tview=xdvi %f
-                    // \topen.convert.Convert file to Postscript=dvips %f -o `basename %f .dvi`.ps
-
-                    // for now ignore lines with flags in...FIX
-                    sTmp = sTmp.AfterLast(wxT(']'));
-                    sTmp = sTmp.AfterLast(wxT('\t'));
-                    sTmp.Trim(false).Trim();
-                    if (0 == sTmp.Replace( wxT("%f"), wxT("%s") ))
-                        sTmp = sTmp + wxT(" %s");
+                    sTmp = right_of_equal;
+                    sTmp.Replace( wxT("%f"), wxT("%s") );
+                    sTmp.Prepend( wxT("print=") );
+                    entry->Add(sTmp);
+                }
+                else if (left_of_equal == wxT("description"))
+                {
+                    strDesc = right_of_equal;
+                }
+                else if (left_of_equal == wxT("short_list_application_ids_for_novice_user_level"))
+                {
+                    sTmp = right_of_equal;
+                    if (sTmp.Contains( wxT(",") ))
+                        sTmp = sTmp.BeforeFirst( wxT(',') );
+                    sTmp.Prepend( wxT("open=") );
+                    sTmp.Append( wxT(" %s") );
                     entry->Add(sTmp);
                 }
 
@@ -967,7 +730,7 @@ bool wxMimeTypesManagerImpl::WriteKDEMimeFile(int index, bool delete_index)
     {
         // holds an extension; need to change it to *.ext;
         wxString e = wxT("*.") + tokenizer.GetNextToken() + wxT(";");
-        sTmp = sTmp + e;
+        sTmp += e;
     }
 
     if (!delete_index)
@@ -1134,7 +897,7 @@ void wxMimeTypesManagerImpl::LoadKDELinksForMimeSubtype(const wxString& dirbase,
         // we expect %f; others including  %F and %U and %u are possible
         wxString sTmp = file.GetCmd(nIndex);
         if (0 == sTmp.Replace( wxT("%f"), wxT("%s") ))
-            sTmp = sTmp + wxT(" %s");
+            sTmp += wxT(" %s");
         entry->AddOrReplaceVerb(wxString(wxT("open")), sTmp );
     }
 
@@ -1244,8 +1007,8 @@ void wxMimeTypesManagerImpl::GetKDEMimeInfo(const wxString& sExtraDir)
 
             // Check for entry
             wxString theme(wxT("default.kde"));
-            size_t cnt = config.GetLineCount();
-            for (size_t i = 0; i < cnt; i++)
+            size_t nCount = config.GetLineCount();
+            for (size_t i = 0; i < nCount; i++)
             {
                 if (config[i].StartsWith(wxT("Theme="), &theme/*rest*/))
                     break;
@@ -1372,7 +1135,8 @@ bool wxFileTypeImpl::GetIcon(wxIconLocation *iconLoc) const
 bool wxFileTypeImpl::GetMimeTypes(wxArrayString& mimeTypes) const
 {
     mimeTypes.Clear();
-    for (size_t i = 0; i < m_index.GetCount(); i++)
+    size_t nCount = m_index.GetCount();
+    for (size_t i = 0; i < nCount; i++)
         mimeTypes.Add(m_manager->m_aTypes[m_index[i]]);
 
     return true;
@@ -1485,7 +1249,8 @@ wxFileTypeImpl::SetCommand(const wxString& cmd,
     entry->Add(verb + wxT("=")  + cmd + wxT(" %s "));
 
     bool ok = true;
-    for ( size_t i = 0; i < strTypes.GetCount(); i++ )
+    size_t nCount = strTypes.GetCount();
+    for ( size_t i = 0; i < nCount; i++ )
     {
         if (!m_manager->DoAssociation(strTypes[i], strIcon, entry, strExtensions, strDesc))
             ok = false;
@@ -1494,7 +1259,7 @@ wxFileTypeImpl::SetCommand(const wxString& cmd,
     return ok;
 }
 
-// ignore index on the grouds that we only have one icon in a Unix file
+// ignore index on the grounds that we only have one icon in a Unix file
 bool wxFileTypeImpl::SetDefaultIcon(const wxString& strIcon, int WXUNUSED(index))
 {
     if (strIcon.empty())
@@ -1510,7 +1275,8 @@ bool wxFileTypeImpl::SetDefaultIcon(const wxString& strIcon, int WXUNUSED(index)
 
     wxMimeTypeCommands *entry = new wxMimeTypeCommands();
     bool ok = true;
-    for ( size_t i = 0; i < strTypes.GetCount(); i++ )
+    size_t nCount = strTypes.GetCount();
+    for ( size_t i = 0; i < nCount; i++ )
     {
         if ( !m_manager->DoAssociation
                          (
@@ -1545,18 +1311,14 @@ void wxMimeTypesManagerImpl::InitIfNeeded()
         // set the flag first to prevent recursion
         m_initialized = true;
 
-#if 1
-    Initialize();
-#else
-    wxString wm = wxGetenv( wxT("WINDOWMANAGER") );
+    const wxString &wm = wxGetenv( wxT("WINDOWMANAGER") );
 
     if (wm.Find( wxT("kde") ) != wxNOT_FOUND)
-        Initialize( wxMAILCAP_KDE | wxMAILCAP_STANDARD );
+        Initialize( wxMAILCAP_KDE  );
     else if (wm.Find( wxT("gnome") ) != wxNOT_FOUND)
-        Initialize( wxMAILCAP_GNOME | wxMAILCAP_STANDARD );
+        Initialize( wxMAILCAP_GNOME );
     else
         Initialize();
-#endif
     }
 }
 
@@ -1626,20 +1388,21 @@ void wxMimeTypesManagerImpl::GetMimeInfo(const wxString& sExtraDir)
     if (!sExtraDir.empty())
         dirs.Add( sExtraDir + wxT("/") );
 
+    wxString file;
     size_t nDirs = dirs.GetCount();
     for ( size_t nDir = 0; nDir < nDirs; nDir++ )
     {
-        wxString file = dirs[nDir] + wxT("mailcap");
+        file = dirs[nDir];
+        file += wxT("mailcap");
         if ( wxFile::Exists(file) )
         {
             ReadMailcap(file);
         }
 
-        file = dirs[nDir] + wxT("mime.types");
+        file = dirs[nDir];
+        file += wxT("mime.types");
         if ( wxFile::Exists(file) )
-        {
             ReadMimeTypes(file);
-        }
     }
 }
 
@@ -1675,7 +1438,7 @@ bool wxMimeTypesManagerImpl::WriteToMimeTypes(int index, bool delete_index)
         nIndex = file.pIndexOf(wxT("#--Netscape"));
         if (nIndex != wxNOT_FOUND)
         {
-            wxASSERT_MSG(false,wxT("Error in .mime.types \nTrying to mix Netscape and Metamail formats\nFile not modiifed"));
+            wxFAIL_MSG(wxT("Error in .mime.types\nTrying to mix Netscape and Metamail formats\nFile not modified"));
             return false;
         }
 
@@ -1692,7 +1455,7 @@ bool wxMimeTypesManagerImpl::WriteToMimeTypes(int index, bool delete_index)
         {
             // add the new entries in
             wxString sTmp = strType.Append( wxT(' '), 40 - strType.Len() );
-            sTmp = sTmp + m_aExtensions[index];
+            sTmp += m_aExtensions[index];
             file.AddLine(sTmp);
         }
 
@@ -1742,7 +1505,7 @@ bool wxMimeTypesManagerImpl::WriteToNSMimeTypes(int index, bool delete_index)
             // metamail entreies
             if (file.GetLineCount() > 0)
             {
-                wxASSERT_MSG(false, wxT(".mime.types File not in Netscape format\nNo entries written to\n.mime.types or to .mailcap"));
+                wxFAIL_MSG(wxT(".mime.types File not in Netscape format\nNo entries written to\n.mime.types or to .mailcap"));
                 return false;
             }
 
@@ -1861,7 +1624,7 @@ bool wxMimeTypesManagerImpl::WriteToMailCap(int index, bool delete_index)
                 file.GetLineCount()) file.CommentLine(nIndex);
         }
 
-        sTmp = sTmp + wxT(";") + sCmd; //includes wxT(" %s ");
+        sTmp += wxT(";") + sCmd; //includes wxT(" %s ");
 
         // write it in the format that Netscape uses (default)
         if (! ( m_mailcapStylesInited & wxMAILCAP_STANDARD ) )
@@ -1899,7 +1662,8 @@ bool wxMimeTypesManagerImpl::WriteToMailCap(int index, bool delete_index)
                         bKnownToken = true;
 
                     size_t i;
-                    for (i=0; i < entries->GetCount(); i++)
+                    size_t nCount = entries->GetCount();
+                    for (i=0; i < nCount; i++)
                     {
                         if (s.Contains(entries->GetVerb(i)))
                             bKnownToken = true;
@@ -1907,7 +1671,7 @@ bool wxMimeTypesManagerImpl::WriteToMailCap(int index, bool delete_index)
 
                     if (!bKnownToken)
                     {
-                        sTmp = sTmp + wxT("; \\");
+                        sTmp += wxT("; \\");
                         file.InsertLine(sTmp, nIndex);
                         sTmp = s;
                     }
@@ -1918,7 +1682,7 @@ bool wxMimeTypesManagerImpl::WriteToMailCap(int index, bool delete_index)
 
             if (! m_aDescriptions[index].empty() )
             {
-                sTmp = sTmp + wxT("; \\");
+                sTmp += wxT("; \\");
                 file.InsertLine(sTmp, nIndex);
                 nIndex++;
                 sTmp = wxT("       description=\"") + m_aDescriptions[index] + wxT("\"");
@@ -1926,7 +1690,7 @@ bool wxMimeTypesManagerImpl::WriteToMailCap(int index, bool delete_index)
 
             if (! m_aIcons[index].empty() )
             {
-                sTmp = sTmp + wxT("; \\");
+                sTmp += wxT("; \\");
                 file.InsertLine(sTmp, nIndex);
                 nIndex++;
                 sTmp = wxT("       x11-bitmap=\"") + m_aIcons[index] + wxT("\"");
@@ -1938,7 +1702,7 @@ bool wxMimeTypesManagerImpl::WriteToMailCap(int index, bool delete_index)
                 for (i=0; i < entries->GetCount(); i++)
                     if ( i != iOpen )
                     {
-                        sTmp = sTmp + wxT("; \\");
+                        sTmp += wxT("; \\");
                         file.InsertLine(sTmp, nIndex);
                         nIndex++;
                         sTmp = wxT("       ") + entries->GetVerbCmd(i);
@@ -1975,14 +1739,16 @@ wxFileType * wxMimeTypesManagerImpl::Associate(const wxFileTypeInfo& ftInfo)
     wxArrayString sA_Exts = ftInfo.GetExtensions();
     wxString sExt, sExtStore;
     size_t i, nIndex;
-    for (i=0; i < sA_Exts.GetCount(); i++)
+    size_t nExtCount = sA_Exts.GetCount();
+    for (i=0; i < nExtCount; i++)
     {
         sExt = sA_Exts.Item(i);
 
         // clean up to just a space before and after
         sExt.Trim().Trim(false);
         sExt = wxT(' ') + sExt + wxT(' ');
-        for (nIndex = 0; nIndex < m_aExtensions.GetCount(); nIndex++)
+        size_t nCount = m_aExtensions.GetCount();
+        for (nIndex = 0; nIndex < nCount; nIndex++)
         {
             sExtStore = m_aExtensions.Item(nIndex);
             if (sExtStore.Replace(sExt, wxT(" ") ) > 0)
@@ -2030,13 +1796,8 @@ bool wxMimeTypesManagerImpl::WriteMimeInfo(int nIndex, bool delete_mime )
                 ok = false;
     }
 
-    if (m_mailcapStylesInited & wxMAILCAP_GNOME)
-    {
-        // write in Gnome format;
-        if (WriteGnomeMimeFile(nIndex, delete_mime) )
-            if (WriteGnomeKeyFile(nIndex, delete_mime) )
-                ok = false;
-    }
+    // Don't write GNOME files here as this is not
+    // allowed and simply doesn't work
 
     if (m_mailcapStylesInited & wxMAILCAP_KDE)
     {
@@ -2129,10 +1890,12 @@ int wxMimeTypesManagerImpl::AddToMimeData(const wxString& strType,
     wxString& exts = m_aExtensions[nIndex];
 
     // add all extensions we don't have yet
+    wxString ext;
     size_t count = strExtensions.GetCount();
     for ( size_t i = 0; i < count; i++ )
     {
-        wxString ext = strExtensions[i] + wxT(' ');
+        ext = strExtensions[i];
+        ext += wxT(' ');
 
         if ( exts.Find(ext) == wxNOT_FOUND )
         {
@@ -2233,7 +1996,8 @@ wxString wxMimeTypesManagerImpl::GetCommand(const wxString & verb, size_t nIndex
     wxMimeTypeCommands * sPairs = m_aEntries [nIndex];
 
     size_t i;
-    for ( i = 0; i < sPairs->GetCount (); i++ )
+    size_t nCount = sPairs->GetCount();
+    for ( i = 0; i < nCount; i++ )
     {
         sTmp = sPairs->GetVerbCmd (i);
         if ( sTmp.Contains(sV) )
@@ -2396,7 +2160,7 @@ bool wxMimeTypesManagerImpl::ReadMimeTypes(const wxString& strFileName)
                 if ( pEnd == NULL )
                 {
                     wxLogWarning(wxT("Mime.types file %s, line %lu: unterminated quoted string."),
-                                 strFileName.c_str(), nLine + 1);
+                                 strFileName.c_str(), nLine + 1L);
                 }
             }
             else
@@ -2454,7 +2218,7 @@ bool wxMimeTypesManagerImpl::ReadMimeTypes(const wxString& strFileName)
                 // but it may be worth telling the user about other junk in
                 // his mime.types file
                 wxLogWarning(wxT("Unknown field in file %s, line %lu: '%s'."),
-                             strFileName.c_str(), nLine + 1, strLHS.c_str());
+                             strFileName.c_str(), nLine + 1L, strLHS.c_str());
             }
 
             if ( !entryEnded )
@@ -2629,6 +2393,10 @@ bool wxMimeTypesManagerImpl::ReadMailcap(const wxString& strFileName,
     wxString curField;
     curField.reserve(1024);
 
+    const wxChar *pPagerEnv = wxGetenv(wxT("PAGER"));
+
+    const wxArrayString empty_extensions_list;
+
     size_t nLineCount = file.GetLineCount();
     for ( size_t nLine = 0; nLine < nLineCount; nLine++ )
     {
@@ -2680,7 +2448,7 @@ bool wxMimeTypesManagerImpl::ReadMailcap(const wxString& strFileName,
 
                             wxLogDebug(wxT("Mailcap file %s, line %lu: '\\' on the end of the last line ignored."),
                                        strFileName.c_str(),
-                                       (unsigned long)nLine + 1);
+                                       nLine + 1L);
                         }
                         else
                         {
@@ -2744,7 +2512,7 @@ bool wxMimeTypesManagerImpl::ReadMailcap(const wxString& strFileName,
                                 (
                                     wxT("Mailcap file %s, line %lu: unknown field '%s' for the MIME type '%s' ignored."),
                                     strFileName.c_str(),
-                                    (unsigned long)nLine + 1,
+                                    nLine + 1L,
                                     curField.c_str(),
                                     data.type.c_str()
                                 );
@@ -2782,7 +2550,7 @@ bool wxMimeTypesManagerImpl::ReadMailcap(const wxString& strFileName,
         if ( currentToken < Field_Other )
         {
             wxLogWarning(wxT("Mailcap file %s, line %lu: incomplete entry ignored."),
-                         strFileName.c_str(), nLine + 1);
+                         strFileName.c_str(), nLine + 1L);
 
             continue;
         }
@@ -2803,13 +2571,12 @@ bool wxMimeTypesManagerImpl::ReadMailcap(const wxString& strFileName,
         // is a bad idea (FIXME)
         if ( data.copiousoutput )
         {
-            const wxChar *p = wxGetenv(wxT("PAGER"));
-            data.cmdOpen << wxT(" | ") << (p ? p : wxT("more"));
+            data.cmdOpen << wxT(" | ") << (pPagerEnv ? pPagerEnv : wxT("more"));
         }
 
         if ( data.needsterminal )
         {
-            data.cmdOpen = wxString::Format(wxT("xterm -e sh -c '%s'"),
+            data.cmdOpen.Printf(wxT("xterm -e sh -c '%s'"),
                                             data.cmdOpen.c_str());
         }
 
@@ -2848,7 +2615,7 @@ bool wxMimeTypesManagerImpl::ReadMailcap(const wxString& strFileName,
                     data.type,
                     data.icon,
                     new wxMimeTypeCommands(data.verbs, data.commands),
-                    wxArrayString() /* extensions */,
+                    empty_extensions_list,
                     data.desc,
                     overwrite
                 );
@@ -2868,12 +2635,11 @@ size_t wxMimeTypesManagerImpl::EnumAllFileTypes(wxArrayString& mimetypes)
 
     mimetypes.Empty();
 
-    wxString type;
     size_t count = m_aTypes.GetCount();
     for ( size_t n = 0; n < count; n++ )
     {
         // don't return template types from here (i.e. anything containg '*')
-        type = m_aTypes[n];
+        const wxString &type = m_aTypes[n];
         if ( type.Find(wxT('*')) == wxNOT_FOUND )
         {
             mimetypes.Add(type);
@@ -2889,14 +2655,16 @@ size_t wxMimeTypesManagerImpl::EnumAllFileTypes(wxArrayString& mimetypes)
 
 bool wxMimeTypesManagerImpl::Unassociate(wxFileType *ft)
 {
+    InitIfNeeded();
+
     wxArrayString sMimeTypes;
     ft->GetMimeTypes(sMimeTypes);
 
-    wxString sMime;
     size_t i;
-    for (i = 0; i < sMimeTypes.GetCount(); i ++)
+    size_t nCount = sMimeTypes.GetCount();
+    for (i = 0; i < nCount; i ++)
     {
-        sMime = sMimeTypes.Item(i);
+        const wxString &sMime = sMimeTypes.Item(i);
         int nIndex = m_aTypes.Index(sMime);
         if ( nIndex == wxNOT_FOUND)
         {
@@ -2928,7 +2696,7 @@ bool wxMimeTypesManagerImpl::Unassociate(wxFileType *ft)
 
 static bool IsKnownUnimportantField(const wxString& fieldAll)
 {
-    static const wxChar *knownFields[] =
+    static const wxChar * const knownFields[] =
     {
         wxT("x-mozilla-flags"),
         wxT("nametemplate"),
@@ -2947,4 +2715,3 @@ static bool IsKnownUnimportantField(const wxString& fieldAll)
 
 #endif
   // wxUSE_MIMETYPE && wxUSE_FILE && wxUSE_TEXTFILE
-