CODE REVIEW: Support for all cases where character is not found

Changes after review to cover all NPE cases.  This will return space
character for all


Signed-off-by: sguan <sguan@actuate.com>

engine/org.eclipse.birt.report.engine.emitter.postscript/src/org/eclipse/birt/report/engine/emitter/postscript/truetypefont/TrueTypeFont.java

@@ -176,7 +176,6 @@ public class TrueTypeFont
     static final int WE_HAVE_AN_X_AND_Y_SCALE = 64;
     static final int WE_HAVE_A_TWO_BY_TWO = 128;
 
-    static private final int NBSP = 160;
     static private final int SPACE = 32;
 	/**
 	 * The components of table 'head'.
@@ -1213,10 +1212,16 @@ private String toPSString( String data )
 		return "(" + data + ")";
 	}
 
+	/**
+	 * find the glyph index of a character
+	 * 
+	 * @param c character to search
+	 * @return if found the character return the index, if not return space
+	 */
 	public int getGlyphIndex( char c )
 	{
 		int[] glyphIndexs = (int[]) getCMap( ).get( (int) c );
-		if( glyphIndexs == null && c == NBSP )
+		if( glyphIndexs == null )
 		{
 			glyphIndexs = getCMap( ).get( SPACE );
 		}