| static private TrimStringStart ( string value ) : string | ||
| value | string | |
| 리턴 | 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--;
}
}