//[DebuggerStepThrough()]
public static XmlState ProcessFragment(ITextSource fragment, Func <XmlReader, int, XmlState, bool> processor)
{
var lineOffsets = new List <int>()
{
0
};
var state = XmlState.Other;
var line = 1;
var lastTag = new KeyValuePair <int, int>(0, 0);
var attrValueQuote = '"';
for (var i = 0; i < fragment.TextLength; i++)
{
switch (fragment.GetCharAt(i))
{
case '\r':
if (i + 1 < fragment.TextLength && fragment.GetCharAt(i + 1) == '\n')
{
i++;
}
line++;
lineOffsets.Add(i + 1);
if (state == XmlState.Tag)
{
state = XmlState.Attribute;
}
break;
case '\n':
line++;
lineOffsets.Add(i + 1);
if (state == XmlState.Tag)
{
state = XmlState.Attribute;
}
break;
default:
switch (state)
{
case XmlState.Attribute:
if (fragment.GetCharAt(i) == '=')
{
i++;
if (i < fragment.TextLength)
{
attrValueQuote = fragment.GetCharAt(i);
}
state = XmlState.AttributeValue;
}
else if (fragment.GetCharAt(i) == '>')
{
state = XmlState.Other;
}
break;
case XmlState.AttributeValue:
if (fragment.GetCharAt(i) == '"' || fragment.GetCharAt(i) == '\'')
{
state = XmlState.Tag;
}
break;
case XmlState.CData:
if (i + 2 < fragment.TextLength && fragment.GetCharAt(i) == ']' && fragment.GetCharAt(i + 1) == ']' && fragment.GetCharAt(i + 2) == '>')
{
i += 2;
state = XmlState.Other;
}
break;
case XmlState.Comment:
if (i + 2 < fragment.TextLength && fragment.GetCharAt(i) == '-' && fragment.GetCharAt(i + 1) == '-' && fragment.GetCharAt(i + 2) == '>')
{
i += 2;
state = XmlState.Other;
}
break;
case XmlState.Tag:
if (char.IsWhiteSpace(fragment.GetCharAt(i)))
{
state = XmlState.Attribute;
}
else if (fragment.GetCharAt(i) == '>')
{
state = XmlState.Other;
}
break;
case XmlState.Other:
if (fragment.GetCharAt(i) == '<')
{
if (i + 3 < fragment.TextLength &&
fragment.GetCharAt(i + 1) == '!' &&
fragment.GetCharAt(i + 2) == '-' &&
fragment.GetCharAt(i + 3) == '-')
{
i += 3;
state = XmlState.Comment;
}
else if (i + 8 < fragment.TextLength &&
fragment.GetCharAt(i + 1) == '!' &&
fragment.GetCharAt(i + 2) == '[' &&
fragment.GetCharAt(i + 3) == 'C' &&
fragment.GetCharAt(i + 4) == 'D' &&
fragment.GetCharAt(i + 5) == 'A' &&
fragment.GetCharAt(i + 6) == 'T' &&
fragment.GetCharAt(i + 7) == 'A' &&
fragment.GetCharAt(i + 8) == '[')
{
i += 8;
state = XmlState.CData;
}
else
{
state = XmlState.Tag;
lastTag = new KeyValuePair <int, int>(line, i - lineOffsets.Last() + 2);
}
}
break;
}
break;
}
}
const string __noName = "___NO_NAME___";
const string __eof = "{`EOF`}";
var suffix = string.Empty;
switch (state)
{
case XmlState.Attribute:
if (char.IsWhiteSpace(fragment.GetCharAt(fragment.TextLength - 1)))
{
state = XmlState.AttributeStart;
suffix += ">";
}
else
{
suffix += "=\"\">";
}
break;
case XmlState.AttributeValue:
if (fragment.GetCharAt(fragment.TextLength - 1) == '=')
{
suffix += "''>";
}
else
{
suffix += attrValueQuote.ToString() + ">";
}
break;
case XmlState.CData:
suffix += "]]>";
break;
case XmlState.Comment:
suffix += "-->";
break;
case XmlState.Tag:
if (fragment.GetCharAt(fragment.TextLength - 1) == '<')
{
suffix += __noName;
}
suffix += ">";
break;
}
suffix += "<!--" + __eof + "-->";
var settings = new XmlReaderSettings()
{
ConformanceLevel = ConformanceLevel.Fragment
};
var textReader = new AugmentedReader(fragment.CreateReader(), suffix);
var reader = XmlReader.Create(textReader, settings);
var lineInfo = reader as IXmlLineInfo;
try
{
bool keepGoing = true;
while (keepGoing && reader.Read() && !(reader.NodeType == XmlNodeType.Comment && reader.Value == __eof))
{
if (reader.LocalName != __noName)
{
keepGoing = processor.Invoke(reader, lineOffsets[lineInfo.LineNumber - 1]
+ lineInfo.LinePosition
- (reader.NodeType == XmlNodeType.Element ? 2 : 1), state);
if (reader.NodeType == XmlNodeType.Element &&
lineInfo.LineNumber == lastTag.Key &&
lineInfo.LinePosition == lastTag.Value)
{
for (var i = 0; i < reader.AttributeCount; i++)
{
reader.MoveToAttribute(i);
keepGoing = processor.Invoke(reader, lineOffsets[lineInfo.LineNumber - 1] + lineInfo.LinePosition - 1, state);
}
}
}
}
}
catch (XmlException)
{
// Do Nothing
}
return(state);
}
//[DebuggerStepThrough()]
public static XmlState ProcessFragment(ITextSource fragment, Func<XmlReader, int, XmlState, bool> processor)
{
var lineOffsets = new List<int>() {0};
var state = XmlState.Other;
var line = 1;
var lastTag = new KeyValuePair<int, int>(0, 0);
var attrValueQuote = '"';
for (var i = 0; i < fragment.TextLength; i++)
{
switch (fragment.GetCharAt(i))
{
case '\r':
if (i + 1 < fragment.TextLength && fragment.GetCharAt(i + 1) == '\n') i++;
line++;
lineOffsets.Add(i + 1);
if (state == XmlState.Tag) state = XmlState.Attribute;
break;
case '\n':
line++;
lineOffsets.Add(i + 1);
if (state == XmlState.Tag) state = XmlState.Attribute;
break;
default:
switch (state)
{
case XmlState.Attribute:
if (fragment.GetCharAt(i) == '=')
{
i++;
if (i < fragment.TextLength)
attrValueQuote = fragment.GetCharAt(i);
state = XmlState.AttributeValue;
}
else if (fragment.GetCharAt(i) == '>')
{
state = XmlState.Other;
}
break;
case XmlState.AttributeValue:
if (fragment.GetCharAt(i) == '"' || fragment.GetCharAt(i) == '\'')
{
state = XmlState.Tag;
}
break;
case XmlState.CData:
if (i + 2 < fragment.TextLength && fragment.GetCharAt(i) == ']' && fragment.GetCharAt(i + 1) == ']' && fragment.GetCharAt(i + 2) == '>')
{
i += 2;
state = XmlState.Other;
}
break;
case XmlState.Comment:
if (i + 2 < fragment.TextLength && fragment.GetCharAt(i) == '-' && fragment.GetCharAt(i + 1) == '-' && fragment.GetCharAt(i + 2) == '>')
{
i += 2;
state = XmlState.Other;
}
break;
case XmlState.Tag:
if (char.IsWhiteSpace(fragment.GetCharAt(i)))
{
state = XmlState.Attribute;
}
else if (fragment.GetCharAt(i) == '>')
{
state = XmlState.Other;
}
break;
case XmlState.Other:
if (fragment.GetCharAt(i) == '<')
{
if (i + 3 < fragment.TextLength
&& fragment.GetCharAt(i + 1) == '!'
&& fragment.GetCharAt(i + 2) == '-'
&& fragment.GetCharAt(i + 3) == '-')
{
i += 3;
state = XmlState.Comment;
}
else if (i + 8 < fragment.TextLength
&& fragment.GetCharAt(i + 1) == '!'
&& fragment.GetCharAt(i + 2) == '['
&& fragment.GetCharAt(i + 3) == 'C'
&& fragment.GetCharAt(i + 4) == 'D'
&& fragment.GetCharAt(i + 5) == 'A'
&& fragment.GetCharAt(i + 6) == 'T'
&& fragment.GetCharAt(i + 7) == 'A'
&& fragment.GetCharAt(i + 8) == '[')
{
i += 8;
state = XmlState.CData;
}
else
{
state = XmlState.Tag;
lastTag = new KeyValuePair<int, int>(line, i - lineOffsets.Last() + 2);
}
}
break;
}
break;
}
}
const string __noName = "___NO_NAME___";
const string __eof = "{`EOF`}";
var suffix = string.Empty;
switch (state)
{
case XmlState.Attribute:
if (char.IsWhiteSpace(fragment.GetCharAt(fragment.TextLength - 1)))
{
state = XmlState.AttributeStart;
suffix += ">";
}
else
{
suffix += "=\"\">";
}
break;
case XmlState.AttributeValue:
if (fragment.GetCharAt(fragment.TextLength - 1) == '=')
{
suffix += "''>";
}
else
{
suffix += attrValueQuote.ToString() + ">";
}
break;
case XmlState.CData:
suffix += "]]>";
break;
case XmlState.Comment:
suffix += "-->";
break;
case XmlState.Tag:
if (fragment.GetCharAt(fragment.TextLength - 1) == '<') suffix += __noName;
suffix += ">";
break;
}
suffix += "<!--" + __eof + "-->";
var settings = new XmlReaderSettings() { ConformanceLevel = ConformanceLevel.Fragment };
var textReader = new AugmentedReader(fragment.CreateReader(), suffix);
var reader = XmlReader.Create(textReader, settings);
var lineInfo = reader as IXmlLineInfo;
try
{
bool keepGoing = true;
while (keepGoing && reader.Read() && !(reader.NodeType == XmlNodeType.Comment && reader.Value == __eof))
{
if (reader.LocalName != __noName)
{
keepGoing = processor.Invoke(reader, lineOffsets[lineInfo.LineNumber - 1]
+ lineInfo.LinePosition
- (reader.NodeType == XmlNodeType.Element ? 2 : 1), state);
if (reader.NodeType == XmlNodeType.Element
&& lineInfo.LineNumber == lastTag.Key
&& lineInfo.LinePosition == lastTag.Value)
{
for (var i = 0; i < reader.AttributeCount; i++)
{
reader.MoveToAttribute(i);
keepGoing = processor.Invoke(reader, lineOffsets[lineInfo.LineNumber - 1] + lineInfo.LinePosition - 1, state);
}
}
}
}
}
catch (XmlException)
{
// Do Nothing
}
return state;
}
