Avoid an assert when m_dir is empty

[wxWidgets.git] / src / unix / fontenum.cpp

diff --git a/src/unix/fontenum.cpp b/src/unix/fontenum.cpp
index f1181a4aa7277ddb76e37a975c6f13be8a9fef93..90a63d4a7c2a3e820fc59cedc0baa084a8a801a7 100644 (file)
--- a/src/unix/fontenum.cpp
+++ b/src/unix/fontenum.cpp
@@ -17,19 +17,24 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#ifdef __GNUG__
-    #pragma implementation "fontenum.h"
+// for compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#if wxUSE_FONTENUM
+
+#include "wx/fontenum.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/dynarray.h"
+    #include "wx/string.h"
+    #include "wx/app.h"
+    #include "wx/utils.h"
 #endif
 
-#include "wx/defs.h"
-#include "wx/dynarray.h"
-#include "wx/string.h"
 #include "wx/regex.h"
-#include "wx/utils.h"
-#include "wx/app.h"
 #include "wx/fontmap.h"
-#include "wx/fontenum.h"
 #include "wx/fontutil.h"
+#include "wx/encinfo.h"
 
 // ----------------------------------------------------------------------------
 // Pango
@@ -42,58 +47,64 @@
 #ifdef __WXGTK20__
 #include "gtk/gtk.h"
 extern GtkWidget *wxGetRootWindow();
-#endif
+#endif // __WXGTK20__
 
-static int
-cmp_families (const void *a, const void *b)
+extern "C"
+{
+static int wxCMPFUNC_CONV
+wxCompareFamilies (const void *a, const void *b)
 {
   const char *a_name = pango_font_family_get_name (*(PangoFontFamily **)a);
   const char *b_name = pango_font_family_get_name (*(PangoFontFamily **)b);
-  
+
   return g_utf8_collate (a_name, b_name);
 }
+}
 
-// I admit I don't yet understand encodings with Pango
 bool wxFontEnumerator::EnumerateFacenames(wxFontEncoding encoding,
                                           bool fixedWidthOnly)
 {
-    if ( fixedWidthOnly )
+    if ( encoding != wxFONTENCODING_SYSTEM && encoding != wxFONTENCODING_UTF8 )
     {
-        OnFacename( wxT("monospace") );
+        // Pango supports only UTF-8 encoding (and system means any, so we
+        // accept it too)
+        return false;
     }
-    else
-    {
-        PangoFontFamily **families = NULL;
-        gint n_families = 0;
-        pango_context_list_families ( 
+
+    PangoFontFamily **families = NULL;
+    gint n_families = 0;
+    pango_context_list_families (
 #ifdef __WXGTK20__
-            gtk_widget_get_pango_context( wxGetRootWindow() ),
+        gtk_widget_get_pango_context( wxGetRootWindow() ),
 #else
-            wxTheApp->GetPangoContext(),
+        wxTheApp->GetPangoContext(),
 #endif
-            &families, &n_families );
-        qsort (families, n_families, sizeof (PangoFontFamily *), cmp_families);
+        &families, &n_families );
+    qsort (families, n_families, sizeof (PangoFontFamily *), wxCompareFamilies);
 
-        for (int i=0; i<n_families; i++)
+    for ( int i = 0; i < n_families; i++ )
+    {
+#if defined(__WXGTK20__) || defined(HAVE_PANGO_FONT_FAMILY_IS_MONOSPACE)
+        if ( !fixedWidthOnly ||
+            pango_font_family_is_monospace(families[i]) )
+#endif
         {
-            const gchar *name = pango_font_family_get_name( families[i] );
-            
-            wxString tmp( name, wxConvUTF8 );
-            OnFacename( tmp );
+            const gchar *name = pango_font_family_get_name(families[i]);
+            OnFacename(wxString(name, wxConvUTF8));
         }
     }
-    
-    return TRUE;
+    g_free(families);
+
+    return true;
 }
 
-bool wxFontEnumerator::EnumerateEncodings(const wxString& family)
+bool wxFontEnumerator::EnumerateEncodings(const wxString& facename)
 {
-    return FALSE;
+    return EnumerateEncodingsUTF8(facename);
 }
 
 
-#else
-  // Pango
+#else // !wxUSE_PANGO
 
 #ifdef __VMS__ // Xlib.h for VMS is not (yet) compatible with C++
                // The resulting warnings are switched off here
@@ -180,6 +191,7 @@ static bool ProcessFamiliesFromFontList(wxFontEnumerator *This,
             continue;
         }
 
+        // coverity[returned_null]
         char *dash = strchr(font + 1, '-');
         char *family = dash + 1;
         dash = strchr(family, '-');
@@ -191,7 +203,7 @@ static bool ProcessFamiliesFromFontList(wxFontEnumerator *This,
             if ( !This->OnFacename(fam) )
             {
                 // stop enumerating
-                return FALSE;
+                return false;
             }
 
             families.Add(fam);
@@ -199,7 +211,7 @@ static bool ProcessFamiliesFromFontList(wxFontEnumerator *This,
         //else: already seen
     }
 
-    return TRUE;
+    return true;
 }
 #endif
   // wxUSE_NANOX
@@ -212,14 +224,14 @@ bool wxFontEnumerator::EnumerateFacenames(wxFontEncoding encoding,
                                           bool fixedWidthOnly)
 {
 #if wxUSE_NANOX
-    return FALSE;
+    return false;
 #else
     int nFonts;
     char **fonts;
 
     if ( fixedWidthOnly )
     {
-        bool cont = TRUE;
+        bool cont = true;
         fonts = CreateFontList(wxT('m'), encoding, &nFonts);
         if ( fonts )
         {
@@ -230,13 +242,13 @@ bool wxFontEnumerator::EnumerateFacenames(wxFontEncoding encoding,
 
         if ( !cont )
         {
-            return TRUE;
+            return true;
         }
 
         fonts = CreateFontList(wxT('c'), encoding, &nFonts);
         if ( !fonts )
         {
-            return TRUE;
+            return true;
         }
     }
     else
@@ -250,14 +262,14 @@ bool wxFontEnumerator::EnumerateFacenames(wxFontEncoding encoding,
             wxASSERT_MSG(encoding != wxFONTENCODING_SYSTEM,
                          wxT("No fonts at all on this system?"));
 
-            return FALSE;
+            return false;
         }
     }
 
     (void)ProcessFamiliesFromFontList(this, fonts, nFonts);
 
     XFreeFontNames(fonts);
-    return TRUE;
+    return true;
 #endif
     // wxUSE_NANOX
 }
@@ -265,11 +277,11 @@ bool wxFontEnumerator::EnumerateFacenames(wxFontEncoding encoding,
 bool wxFontEnumerator::EnumerateEncodings(const wxString& family)
 {
 #if wxUSE_NANOX
-    return FALSE;
+    return false;
 #else
     wxString pattern;
     pattern.Printf(wxT("-*-%s-*-*-*-*-*-*-*-*-*-*-*-*"),
-                   family.IsEmpty() ? wxT("*") : family.c_str());
+                   family.empty() ? wxT("*") : family.c_str());
 
     // get the list of all fonts
     int nFonts;
@@ -279,7 +291,7 @@ bool wxFontEnumerator::EnumerateEncodings(const wxString& family)
     if ( !fonts )
     {
         // unknown family?
-        return FALSE;
+        return false;
     }
 
     // extract the list of (unique) encodings
@@ -299,7 +311,7 @@ bool wxFontEnumerator::EnumerateEncodings(const wxString& family)
         dash = strchr(familyFont, '-');
         *dash = '\0'; // !NULL because Matches() above succeeded
 
-        if ( !family.IsEmpty() && (family != familyFont) )
+        if ( !family.empty() && (family != familyFont) )
         {
             // family doesn't match
             continue;
@@ -330,10 +342,11 @@ bool wxFontEnumerator::EnumerateEncodings(const wxString& family)
 
     XFreeFontNames(fonts);
 
-    return TRUE;
+    return true;
 #endif
     // wxUSE_NANOX
 }
 
-#endif
-   // __WXGTK20__
+#endif // !wxUSE_PANGO
+
+#endif // wxUSE_FONTENUM