find/replace working better (but not done yet)

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@300 0fc631ac-6414-0410-93d0-97cfa31319b6

src/util/tagged_string.cpp

@@ -329,6 +329,21 @@ size_t untagged_to_index(const String& str, size_t pos, bool inside) {
 	return i;
 }
 
+size_t index_to_untagged(const String& str, size_t index) {
+	size_t i = 0, p = 0;
+	index = min(str.size(), index);
+	while (i < index) {
+		Char c = str.GetChar(i);
+		if (c == _('<')) {
+			i = skip_tag(str, i);
+		} else {
+			i++;
+			p++;
+		}
+	}
+	return p;
+}
+
 // ----------------------------------------------------------------------------- : Global operations
 
 String remove_tag(const String& str, const String& tag) {

src/util/tagged_string.hpp

@@ -119,6 +119,11 @@ size_t cursor_to_index(const String& str, size_t cursor, Movement dir = MOVE_MID
  */
 size_t untagged_to_index(const String& str, size_t pos, bool inside);
 
+/// Find the untagged position corresponding to the given tagged position.
+/** An untagged position in str is a position in untag(str).
+ */
+size_t index_to_untagged(const String& str, size_t index);
+
 // ----------------------------------------------------------------------------- : Global operations
 
 /// Remove all instances of a tag and its close tag, but keep the contents.