System.Xml.Xsl.XsltOld.SequentialOutput.WriteWithReplace C# (CSharp) Method

        private void WriteWithReplace(string value, char[] find, string[] replace) {
            Debug.Assert(value != null);
            Debug.Assert(find.Length == replace.Length);

            int length = value.Length;
            int pos = 0;

            while(pos < length) {
                int newPos = value.IndexOfAny(find, pos);
                if (newPos == -1) {
                    break; // not found;
                }
                // output clean leading part of the string
                while (pos < newPos) {
                    Write(value[pos]);
                    pos ++;
                }
                // output replacement
                char badChar = value[pos];
                int i;
                for(i = find.Length - 1; 0 <= i; i --) {
                    if(find[i] == badChar) {
                        Write(replace[i]);
                        break;
                    }
                }
                Debug.Assert(0 <= i, "find char wasn't realy find");
                pos ++;
            }

            // output rest of the string
            if(pos == 0) {
                Write(value);
            }
            else {
                while(pos < length) {
                    Write(value[pos]);
                    pos ++;
                }
            }
        }