static private TrimStringStart ( string value ) : string | ||
value | string | |
return | string |
// This method trims whitespace from the beginning and the end of the string and cached writer events internal void Trim() { // if only one string value -> trim the write spaces directly if (_singleStringValue != null) { _singleStringValue = XmlConvert.TrimString(_singleStringValue); return; } // trim the string in StringBuilder string valBefore = _stringValue.ToString(); string valAfter = XmlConvert.TrimString(valBefore); if (valBefore != valAfter) { _stringValue = new StringBuilder(valAfter); } // trim the beginning of the recorded writer events XmlCharType xmlCharType = XmlCharType.Instance; int i = _firstItem; while (i == _firstItem && i <= _lastItem) { Item item = _items[i]; switch (item.type) { case ItemType.Whitespace: _firstItem++; break; case ItemType.String: case ItemType.Raw: case ItemType.ValueString: item.data = XmlConvert.TrimStringStart((string)item.data); if (((string)item.data).Length == 0) { // no characters left -> move the firstItem index to exclude it from the Replay _firstItem++; } break; case ItemType.StringChars: case ItemType.RawChars: BufferChunk bufChunk = (BufferChunk)item.data; int endIndex = bufChunk.index + bufChunk.count; while (bufChunk.index < endIndex && xmlCharType.IsWhiteSpace(bufChunk.buffer[bufChunk.index])) { bufChunk.index++; bufChunk.count--; } if (bufChunk.index == endIndex) { // no characters left -> move the firstItem index to exclude it from the Replay _firstItem++; } break; } i++; } // trim the end of the recorded writer events i = _lastItem; while (i == _lastItem && i >= _firstItem) { Item item = _items[i]; switch (item.type) { case ItemType.Whitespace: _lastItem--; break; case ItemType.String: case ItemType.Raw: case ItemType.ValueString: item.data = XmlConvert.TrimStringEnd((string)item.data); if (((string)item.data).Length == 0) { // no characters left -> move the lastItem index to exclude it from the Replay _lastItem--; } break; case ItemType.StringChars: case ItemType.RawChars: BufferChunk bufChunk = (BufferChunk)item.data; while (bufChunk.count > 0 && xmlCharType.IsWhiteSpace(bufChunk.buffer[bufChunk.index + bufChunk.count - 1])) { bufChunk.count--; } if (bufChunk.count == 0) { // no characters left -> move the lastItem index to exclude it from the Replay _lastItem--; } break; } i--; } }