Import release 2.0.3

src/utils/kmessshared.cpp

@@ -35,6 +35,8 @@
 #include <QFile>
 #include <QUuid>
 #include <QPainter>
+#include <QList>
+#include <QString>
 
 #ifdef KMESSDEBUG_SHAREDMETHODS
   #define KMESSDEBUG_SHARED_OPENEXTERNAL
@@ -179,7 +181,7 @@ QByteArray KMessShared::deriveKey ( const QByteArray &keyToDerive, const QByteAr
 
 
 
-/** 
+/**
  * @brief Draws an icon with an overlay from two pixmaps.
  *
  * This method takes the two pixmaps and draws them over each other, returning a new pixmap with 'overlay'
@@ -216,7 +218,7 @@ QPixmap KMessShared::drawIconOverlay( const QPixmap icon, const QPixmap overlay,
 
   const int x = width - overlayWidth;
   const int y = height - overlayHeight;
-  
+
   // thanks, Amarok, for the code and the idea :)
   QPixmap result( width, height );
   result.fill( Qt::transparent );
@@ -561,7 +563,7 @@ void KMessShared::openEmailClient( const QString &mailto, const QString &folder,
  *
  * If startingNumber is 1, there is actually no suffix; but this is never a problem if you
  * correctly handle this method returning false, reading the existing file using the suffix,
- * and writing a new file using startingNumber. 
+ * and writing a new file using startingNumber.
  *
  * For example, calling selectNextFile( "/", "name", suffix, "ext", startingNumber ):
  * - if startingNumber is zero and "/name.ext" doesn't exist, returns false,
@@ -671,3 +673,60 @@ bool KMessShared::selectNextFile( const QString &directory, const QString &baseN
 
 
 
+
+// Truncate an UTF-8 multibyte string to a fixed byte size
+QString KMessShared::fixStringToByteSize( const QString &string, quint32 size )
+{
+  // Check if truncating is not needed
+  if( string.isEmpty() || size == 0 )
+  {
+    return string;
+  }
+
+  // Seek through the string one multibyte char at a time, and count their actual size in bytes
+  quint32 validPos = 0;
+  for( quint32 pos = 0; (qint32)pos < string.length(); ++pos )
+  {
+    QChar character( string.at( pos ) );
+
+    quint32 skip = 0;
+    quint32 more;
+
+    // Character ranges from http://en.wikipedia.org/wiki/UTF-8
+    if( character <= 0x007f )
+    {
+      more = 1;
+    }
+    else if( character <= 0x07FF )
+    {
+      more = 2;
+    }
+    else if( character <= 0xd7ff )
+    {
+      more = 3;
+    }
+    else if( character <= 0xDFFF )
+    {
+      // Surrogate area, consume next char as well
+      more = 4;
+      skip = 1;
+    }
+    else
+    {
+      more = 3;
+    }
+
+    // The next character would make the string too long: cut it here
+    if( validPos + more > size )
+    {
+      return QString::fromUtf8( string.toUtf8().left( validPos ) );
+    }
+
+    validPos += more;
+    pos += skip;
+  }
+
+  return string;
+}
+
+