Changeset 277:f18872e0f232

Timestamp:

08/04/08 18:54:11 (5 months ago)

Author:

Frank Benoit <benoit@tionex.de>

branch:

default

Message:

unicode utils

Files:

• dwt/dwthelper/utils.d (modified) (4 diffs)

dwt/dwthelper/utils.d

@@ -341 +341 @@
-}
-int indexToCodepointIndex( String str, int index ){
+    if( index < 0 ) return index;
-    int i = 0;
-    int res = 0;
-    while( i < index ){
+        if( i >= str.length ){
+            break;
+        }
-        if( str[i] < 0x80 ){
-            i+=1;
@@ -436 +440 @@
-            }
-            else{
-
+ 
-                tango.text.convert.Utf.onUnicodeError( "invalid utf8 input", i );
-            }
@@ -447 +451 @@
-                i--;
-                if( i < 0 ){
-
-
+
+
+
-                }
-            } while(( str[i] & 0xC0 ) is 0x80 );
@@ -470 +475 @@
-    }
-    return offset;
+}
+int utf8OffsetIncr( String str, int offset ){
+    int res = offset +1;
+    if( str.length <= res || res <= 0 ){
+        return res;
+    }
+    int tries = 4;
+    while(( str[res] & 0xC0 ) is 0x80 ){
+        res++;
+        assert( tries-- > 0 );
+    }
+    return res;
+}
+int utf8OffsetDecr( String str, int offset ){
+    int res = offset-1;
+    if( str.length <= res || res <= 0 ){
+        return res;
+    }
+    int tries = 4;
+    while(( str[res] & 0xC0 ) is 0x80 ){
+        res--;
+        assert( tries-- > 0 );
+    }
+    Trace.formatln( "utf8OffsetDecr {}->{}", offset, res );
+    Trace.memory( str );
+    return res;
-}
-