Silence warning about truncation since the comment says it ok

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

diff --git a/src/common/imagpnm.cpp b/src/common/imagpnm.cpp
index cea78ca07e40aa360d49700417a7bf98731a07ac..aaa30aec58a52af69307b3d94161e6ea0fffa5e4 100644 (file)
--- a/src/common/imagpnm.cpp
+++ b/src/common/imagpnm.cpp
@@ -7,10 +7,6 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "imagpnm.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -68,17 +64,13 @@ bool wxPNMHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
 
     switch (c)
     {
-        case wxT('2'):
-            if (verbose) wxLogError(_("Loading Grey Ascii PNM image is not yet implemented."));
-            return FALSE;
-        case wxT('5'):
-            if (verbose) wxLogError(_("Loading Grey Raw PNM image is not yet implemented."));
-            return FALSE;
-        case wxT('3'): 
-       case wxT('6'): break;
+        case wxT('2'): // ASCII Grey
+        case wxT('3'): // ASCII RGB
+        case wxT('5'): // RAW Grey
+        case wxT('6'): break;
         default:
             if (verbose) wxLogError(_("PNM: File format is not recognized."));
-            return FALSE;
+            return false;
     }
 
     text_stream.ReadLine(); // for the \n
@@ -94,11 +86,28 @@ bool wxPNMHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
     {
         if (verbose)
            wxLogError( _("PNM: Couldn't allocate memory.") );
-        return FALSE;
+        return false;
     }
 
-   if (c=='3') // Ascii RBG
-      {
+
+    if (c=='2') // Ascii GREY
+    {
+        wxUint32 value, size=width*height;
+        for (wxUint32 i=0; i<size; ++i)
+        {
+            value=text_stream.Read32();
+            *ptr++=(unsigned char)value; // R
+            *ptr++=(unsigned char)value; // G
+            *ptr++=(unsigned char)value; // B
+            if ( !buf_stream )
+            {
+                if (verbose) wxLogError(_("PNM: File seems truncated."));
+                return false;
+            }
+        }
+    }
+    if (c=='3') // Ascii RBG
+    {
         wxUint32 value, size=3*width*height;
         for (wxUint32 i=0; i<size; ++i)
           {
@@ -110,14 +119,31 @@ bool wxPNMHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
             if ( !buf_stream )
               {
                 if (verbose) wxLogError(_("PNM: File seems truncated."));
-                return FALSE;
+                return false;
               }
           }
-      }
+    }
+    if (c=='5') // Raw GREY
+    {
+        wxUint32 size=width*height;
+        unsigned char value;
+        for (wxUint32 i=0; i<size; ++i)
+        {
+            buf_stream.Read(&value,1);
+            *ptr++=value; // R
+            *ptr++=value; // G
+            *ptr++=value; // B
+            if ( !buf_stream )
+            {
+                if (verbose) wxLogError(_("PNM: File seems truncated."));
+                return false;
+            }
+        }
+    }
     if (c=='6') // Raw RGB
       buf_stream.Read( ptr, 3*width*height );
 
-    image->SetMask( FALSE );
+    image->SetMask( false );
 
     const wxStreamError err = buf_stream.GetLastError();
     return err == wxSTREAM_NO_ERROR || err == wxSTREAM_EOF;
@@ -142,15 +168,17 @@ bool wxPNMHandler::DoCanRead( wxInputStream& stream )
 
     if ( stream.GetC() == 'P' )
     {
-        switch (stream.GetC())
+        switch ( stream.GetC() )
         {
-            case '3':
-            case '6':
-                return TRUE;
+            case '2': // ASCII Grey
+            case '3': // ASCII RGB
+            case '5': // RAW Grey
+            case '6': // RAW RGB
+                return true;
         }
     }
 
-    return FALSE;
+    return false;
 }