KeyToString: allocate key on heap

This will allow returning dynamically generated strings

include/vlc_keys.h

@@ -86,7 +86,7 @@
 #define KEY_MOUSEWHEELLEFT   0x00F20000
 #define KEY_MOUSEWHEELRIGHT  0x00F30000
 
-VLC_EXPORT( const char *, KeyToString, (uint_fast32_t i_key) ) LIBVLC_USED;
+VLC_EXPORT( char *, KeyToString, (uint_fast32_t i_key) ) LIBVLC_USED;
 VLC_EXPORT( uint_fast32_t, StringToKey,  (char *psz_key) ) LIBVLC_USED;
 
 typedef enum vlc_key {

modules/gui/macosx/simple_prefs.m

@@ -86,9 +86,12 @@ static VLCSimplePrefs *_o_sharedInstance = nil;
     if( val & KEY_MODIFIER_COMMAND )
         [o_temp_str appendString: [NSString stringWithUTF8String: "\xE2\x8C\x98"]];
 
-    const char *base = KeyToString( val & ~KEY_MODIFIER );
+    char *base = KeyToString( val & ~KEY_MODIFIER );
     if( base )
+    {
         [o_temp_str appendString: [NSString stringWithUTF8String: base]];
+        free( base );
+    }
     else
         o_temp_str = [NSMutableString stringWithString:_NS("Not Set")];
     return o_temp_str;

modules/gui/qt4/util/customwidgets.cpp

@@ -231,16 +231,23 @@ int qtWheelEventToVLCKey( QWheelEvent *e )
 
 QString VLCKeyToString( int val )
 {
-    const char *base = KeyToString (val & ~KEY_MODIFIER);
+    char *base = KeyToString (val & ~KEY_MODIFIER);
 
     QString r = "";
     if( val & KEY_MODIFIER_CTRL )
-        r+= "Ctrl+";
+        r+= qfu( "Ctrl+" );
     if( val & KEY_MODIFIER_ALT )
-        r+= "Alt+";
+        r+= qfu( "Alt+" );
     if( val & KEY_MODIFIER_SHIFT )
-        r+= "Shift+";
+        r+= qfu( "Shift+" );
 
-    return r + (base ? base : qtr( "Unset" ) );
+    if (base)
+    {
+        r += qfu( base );
+        free( base );
+    }
+    else
+        r += qtr( "Unset" );
+    return r;
 }
 

modules/gui/skins2/events/evt_key.cpp

@@ -39,9 +39,12 @@ const string EvtKey::getAsString() const
         msg_Warn( getIntf(), "Unknown action type" );
 
     // Add the key
-    const char *keyName = KeyToString( m_key );
+    char *keyName = KeyToString( m_key );
     if( keyName )
+    {
         event += (string)":" + keyName;
+        free( keyName );
+    }
     else
         msg_Warn( getIntf(), "Unknown key: %d", m_key );
 

src/config/keys.c

@@ -171,14 +171,14 @@ static int cmpkey (const void *key, const void *elem)
     return ((uintptr_t)key) - ((key_descriptor_t *)elem)->i_key_code;
 }
 
-const char *KeyToString (uint_fast32_t sym)
+char *KeyToString (uint_fast32_t sym)
 {
     key_descriptor_t *d;
 
     d = (key_descriptor_t *)
         bsearch ((void *)(uintptr_t)sym, vlc_keys, vlc_num_keys,
                  sizeof (vlc_keys[0]), cmpkey);
-    return d ? d->psz_key_string : NULL;
+    return d ? strdup (d->psz_key_string) : NULL;
 }
 
 uint_fast32_t StringToKey (char *name)