public override void WriteEndElement()
{
WriteStartElementEnd();
if (_nodes.Count <= 0)
{
return;
}
var start = _nodes.Pop();
if (_ignoreDepth > _nodes.Count)
{
_ignoreDepth = int.MaxValue;
}
switch (start.Value)
{
case "a":
_minify = MinifyState.Compressed;
if (_buffer != null)
{
var text = _buffer.ToPool();
if (!string.IsNullOrEmpty(start["href"]))
{
_links.Add(new PlainTextLink()
{
Href = start["href"],
Offset = _pos - text.Length,
Tag = start,
Text = text
});
}
}
_buffer = null;
break;
case "blockquote":
case "h1":
case "h2":
case "h3":
case "h4":
case "h5":
case "h6":
case "ol":
case "p":
case "ul":
EndBlock();
break;
case "pre":
EndBlock();
_preserveWhitespace = PreserveState.None;
break;
case "title":
_metadata.Add(new KeyValuePair <string, string>("title", _buffer.ToPool()));
_buffer = null;
break;
}
}
private void WriteStartElementEnd()
{
if (_nodes.Count > 0 && _state == InternalState.Element)
{
var start = _nodes.Peek();
string buffer;
switch (start.Value)
{
case "a":
buffer = null;
StartInline();
if (start.Attributes.Count > 0 &&
(!start.TryGetValue("href", out buffer) ||
string.IsNullOrEmpty(buffer)))
{
_writer.Write("<a ");
foreach (var attr in start)
{
_writer.Write(attr.Key);
if (!string.IsNullOrEmpty(attr.Value))
{
_writer.Write('=');
_writer.Write('"');
WriteEscaped(attr.Value);
_writer.Write('"');
}
}
_writer.Write('>');
_preserveWhitespace = PreserveState.HtmlEncoding;
}
else if (!string.IsNullOrEmpty(buffer))
{
_writer.Write('[');
}
break;
case "img":
StartInline();
_writer.Write('!');
_writer.Write('[');
_writer.Write(start["alt"]);
_writer.Write(']');
_writer.Write('(');
_writer.Write(start["src"]);
if (start.TryGetValue("title", out buffer))
{
_writer.Write(' ');
_writer.Write('"');
_writer.Write(buffer);
_writer.Write('"');
}
_writer.Write(')');
_minify = MinifyState.Compressed;
break;
default:
if (_settings.ShouldSkipElement(start))
{
_ignoreDepth = _nodes.Count;
}
break;
}
_state = InternalState.Content;
}
}
private void WriteInternal(string value)
{
WriteStartElementEnd();
if (_ignoreDepth <= _nodes.Count)
{
return;
}
if (_preserveWhitespace == PreserveState.HtmlEncoding)
{
WriteEscaped(value);
_outputStarted = true;
return;
}
if (this._buffer != null)
{
this._buffer.Append(value);
}
else
{
for (var i = 0; i < value.Length; i++)
{
if (_preserveWhitespace == PreserveState.InternalLineFeed)
{
_writer.Write(_settings.NewLineChars);
WritePrefix();
_preserveWhitespace = PreserveState.Preserve;
}
if (char.IsWhiteSpace(value[i]) && value[i] != '\u00A0')
{
if (_preserveWhitespace == PreserveState.BeforeContent &&
value[i] == Symbols.LineFeed)
{
_preserveWhitespace = PreserveState.Preserve;
}
else if (_preserveWhitespace != PreserveState.None)
{
if (value[i] == Symbols.LineFeed)
{
_preserveWhitespace = PreserveState.InternalLineFeed;
}
else
{
_writer.Write(value[i]);
}
}
else
{
if (_minify != MinifyState.LastCharWasSpace &&
_minify != MinifyState.BlockEnd)
{
_minify = MinifyState.SpaceNeeded;
}
}
}
else
{
switch (_minify)
{
case MinifyState.BlockEnd:
_writer.Write(_settings.NewLineChars);
_writer.Write(_settings.NewLineChars);
_minify = MinifyState.Compressed;
break;
case MinifyState.SpaceNeeded:
_writer.Write(' ');
_minify = MinifyState.Compressed;
break;
case MinifyState.LastCharWasSpace:
_minify = MinifyState.Compressed;
break;
}
if (_preserveWhitespace == PreserveState.None)
{
switch (value[i])
{
case '\\':
case '*':
case '[':
case '`':
_writer.Write('\\');
break;
}
}
else if (_preserveWhitespace == PreserveState.BeforeContent)
{
_preserveWhitespace = PreserveState.Preserve;
}
_writer.Write(value[i]);
}
}
_outputStarted = true;
}
}
/// <summary>
/// Writes the specified start tag and associates it with the given namespace and prefix.
/// </summary>
/// <param name="prefix">The namespace prefix of the element.</param>
/// <param name="localName">The local name of the element.</param>
/// <param name="ns">The namespace URI to associate with the element.</param>
public override void WriteStartElement(string prefix, string localName, string ns)
{
WriteStartElementEnd();
var start = new HtmlStartTag(localName.ToLowerInvariant());
_nodes.Push(start);
switch (start.Value)
{
case "b":
case "strong":
StartInline();
if (_boldDepth > _nodes.Count)
{
_boldDepth = _nodes.Count;
_writer.Write("**");
}
break;
case "blockquote":
StartBlock("> ");
break;
case "br":
_minify = MinifyState.LastCharWasSpace;
switch (_preserveWhitespace)
{
case PreserveState.BeforeContent:
_preserveWhitespace = PreserveState.Preserve;
break;
case PreserveState.InternalLineFeed:
_writer.Write(_settings.NewLineChars);
WritePrefix();
_preserveWhitespace = PreserveState.InternalLineFeed;
break;
case PreserveState.None:
_writer.Write('\\');
_writer.Write(_settings.NewLineChars);
WritePrefix();
break;
default:
_preserveWhitespace = PreserveState.InternalLineFeed;
break;
}
break;
case "code":
if (_preserveWhitespace == PreserveState.None)
{
StartInline();
_writer.Write('`');
}
break;
case "em":
case "i":
StartInline();
if (_italicDepth > _nodes.Count)
{
_italicDepth = _nodes.Count;
_writer.Write("*");
}
break;
case "h1":
StartBlock("# ");
break;
case "h2":
StartBlock("## ");
break;
case "h3":
StartBlock("### ");
break;
case "h4":
StartBlock("#### ");
break;
case "h5":
StartBlock("##### ");
break;
case "h6":
StartBlock("###### ");
break;
case "hr":
StartBlock("* * *");
EndBlock();
_writer.Write(_settings.NewLineChars);
_minify = MinifyState.LastCharWasSpace;
break;
case "li":
if (_outputStarted)
{
_writer.Write(_settings.NewLineChars);
}
if (_linePrefix.Count > 0 &&
char.IsDigit(_linePrefix[_linePrefix.Count - 1][0]))
{
var value = _linePrefix[_linePrefix.Count - 1];
value = string.Format("{0}. ", int.Parse(value.Substring(0, value.Length - 2)) + 1);
_linePrefix[_linePrefix.Count - 1] = value;
}
WritePrefix();
_minify = MinifyState.LastCharWasSpace;
break;
case "p":
StartBlock("");
break;
case "pre":
StartBlock(" ");
_preserveWhitespace = PreserveState.BeforeContent;
break;
case "ol":
StartList("0. ");
break;
case "ul":
StartList("- ");
break;
}
_state = InternalState.Element;
}
/// <summary>
/// Closes one element and pops the corresponding namespace scope.
/// </summary>
public override void WriteEndElement()
{
WriteStartElementEnd();
var start = _nodes.Pop();
if (_ignoreDepth > _nodes.Count)
{
_ignoreDepth = int.MaxValue;
}
string buffer;
switch (start.Value)
{
case "a":
if (start.TryGetValue("href", out buffer))
{
_writer.Write(']');
_writer.Write('(');
_writer.Write(buffer);
if (start.TryGetValue("title", out buffer))
{
_writer.Write(' ');
_writer.Write('"');
_writer.Write(buffer);
_writer.Write('"');
}
_writer.Write(')');
}
else if (start.Attributes.Count > 0)
{
_writer.Write("</a>");
_preserveWhitespace = PreserveState.None;
}
_minify = MinifyState.Compressed;
break;
case "b":
case "strong":
if (_boldDepth > _nodes.Count)
{
_writer.Write("**");
_boldDepth = int.MaxValue;
}
break;
case "code":
if (_preserveWhitespace == PreserveState.None)
{
_writer.Write('`');
}
break;
case "em":
case "i":
if (_italicDepth > _nodes.Count)
{
_writer.Write("*");
_italicDepth = int.MaxValue;
}
break;
case "blockquote":
case "h1":
case "h2":
case "h3":
case "h4":
case "h5":
case "h6":
case "ol":
case "p":
case "ul":
EndBlock();
break;
case "pre":
EndBlock();
_preserveWhitespace = PreserveState.None;
break;
}
}
private void WriteStartElementEnd(string nextTag = null)
{
if (_nodes.Count > 0 && _state == InternalState.Element)
{
var start = _nodes.Peek();
string buffer;
switch (start.Value)
{
case "a":
buffer = null;
StartInline();
if (start.Attributes.Count > 0 &&
(!start.TryGetValue("href", out buffer) ||
string.IsNullOrEmpty(buffer)))
{
_writer.Write("<a ");
foreach (var attr in start)
{
_writer.Write(attr.Key);
if (!string.IsNullOrEmpty(attr.Value))
{
_writer.Write('=');
_writer.Write('"');
WriteEscaped(attr.Value);
_writer.Write('"');
}
}
_writer.Write('>');
_preserveWhitespace = PreserveState.HtmlEncoding;
}
else if (!string.IsNullOrEmpty(buffer))
{
_writer.Write('[');
_writer.Write('"');
WriteAttributes(start, _writer);
}
break;
case "blockquote":
StartBlock("bq", start);
if (start.TryGetValue("cite", out buffer))
{
_writer.Write(':');
_writer.Write(buffer);
}
break;
case "b":
StartInline();
if (_boldDepth > _nodes.Count)
{
_boldDepth = _nodes.Count;
_writer.Write('*');
_writer.Write('*');
WriteAttributes(start, _writer);
}
break;
case "strong":
StartInline();
if (_boldDepth > _nodes.Count)
{
_boldDepth = _nodes.Count;
_writer.Write('*');
WriteAttributes(start, _writer);
}
break;
case "br":
_minify = MinifyState.LastCharWasSpace;
switch (_preserveWhitespace)
{
case PreserveState.BeforeContent:
_preserveWhitespace = PreserveState.Preserve;
break;
case PreserveState.InternalLineFeed:
_writer.Write(_settings.NewLineChars);
WritePrefix();
_preserveWhitespace = PreserveState.InternalLineFeed;
break;
case PreserveState.None:
_writer.Write(_settings.NewLineChars);
WritePrefix();
break;
default:
_preserveWhitespace = PreserveState.InternalLineFeed;
break;
}
break;
case "cite":
StartInline();
_writer.Write('?');
_writer.Write('?');
WriteAttributes(start, _writer);
break;
case "code":
if (_preserveWhitespace == PreserveState.None)
{
StartInline();
_writer.Write('@');
WriteAttributes(start, _writer);
}
break;
case "del":
StartInline();
_writer.Write('[');
_writer.Write('-');
break;
case "div":
StartBlock("div", start);
break;
case "em":
StartInline();
if (_italicDepth > _nodes.Count)
{
_italicDepth = _nodes.Count;
_writer.Write('_');
WriteAttributes(start, _writer);
}
break;
case "i":
StartInline();
if (_italicDepth > _nodes.Count)
{
_italicDepth = _nodes.Count;
_writer.Write('_');
_writer.Write('_');
WriteAttributes(start, _writer);
}
break;
case "h1":
StartBlock("h1", start);
break;
case "h2":
StartBlock("h2", start);
break;
case "h3":
StartBlock("h3", start);
break;
case "h4":
StartBlock("h4", start);
break;
case "h5":
StartBlock("h5", start);
break;
case "h6":
StartBlock("h6", start);
break;
case "img":
StartInline();
_writer.Write('!');
WriteAttributes(start, _writer);
_writer.Write(start["src"]);
if (start.TryGetValue("alt", out buffer))
{
_writer.Write('(');
_writer.Write(buffer);
_writer.Write(')');
}
_writer.Write('!');
_minify = MinifyState.Compressed;
break;
case "ins":
StartInline();
_writer.Write('[');
_writer.Write('+');
break;
case "hr":
StartBlock("---", start);
EndBlock();
_writer.Write(_settings.NewLineChars);
_minify = MinifyState.LastCharWasSpace;
break;
case "li":
if (_outputStarted)
{
_writer.Write(_settings.NewLineChars);
}
WritePrefix();
break;
case "p":
StartBlock("", start);
break;
case "pre":
if (nextTag == "code")
{
StartBlock("bc", start, true);
}
else
{
StartBlock("pre", start, true);
}
_preserveWhitespace = PreserveState.BeforeContent;
break;
case "span":
_writer.Write('?');
WriteAttributes(start, _writer);
break;
case "sub":
StartInline();
_writer.Write('[');
_writer.Write('~');
break;
case "sup":
StartInline();
_writer.Write('[');
_writer.Write('^');
break;
case "ol":
StartList("#");
break;
case "ul":
StartList("*");
break;
default:
if (_settings.ShouldSkipElement(start))
{
_ignoreDepth = _nodes.Count;
}
break;
}
_state = InternalState.Content;
}
}
public override void WriteEndElement()
{
WriteStartElementEnd();
var start = _nodes.Pop();
if (_ignoreDepth > _nodes.Count)
{
_ignoreDepth = int.MaxValue;
}
string buffer;
switch (start.Value)
{
case "a":
if (start.TryGetValue("href", out buffer))
{
var href = buffer;
if (start.TryGetValue("title", out buffer))
{
_writer.Write('(');
_writer.Write(buffer);
_writer.Write(')');
}
_writer.Write('"');
_writer.Write(':');
_writer.Write(href);
_writer.Write(']');
}
else if (start.Attributes.Count > 0)
{
_writer.Write("</a>");
_preserveWhitespace = PreserveState.None;
}
_minify = MinifyState.Compressed;
break;
case "acronym":
if (start.TryGetValue("title", out buffer))
{
_writer.Write('(');
_writer.Write(buffer);
_writer.Write(')');
}
break;
case "b":
if (_boldDepth > _nodes.Count)
{
_writer.Write('*');
_writer.Write('*');
_boldDepth = int.MaxValue;
}
break;
case "strong":
if (_boldDepth > _nodes.Count)
{
_writer.Write('*');
_boldDepth = int.MaxValue;
}
break;
case "cite":
_writer.Write('?');
_writer.Write('?');
break;
case "code":
if (_preserveWhitespace == PreserveState.None)
{
_writer.Write('@');
}
break;
case "del":
_writer.Write('-');
_writer.Write(']');
break;
case "em":
if (_italicDepth > _nodes.Count)
{
_writer.Write('_');
_italicDepth = int.MaxValue;
}
break;
case "i":
if (_italicDepth > _nodes.Count)
{
_writer.Write('_');
_writer.Write('_');
_italicDepth = int.MaxValue;
}
break;
case "ins":
_writer.Write('+');
_writer.Write(']');
break;
case "blockquote":
case "h1":
case "h2":
case "h3":
case "h4":
case "h5":
case "h6":
case "p":
EndBlock();
break;
case "ol":
case "ul":
EndBlock();
if (_linePrefix.Count > 0)
{
_linePrefix.RemoveAt(_linePrefix.Count - 1);
}
break;
case "pre":
EndBlock();
_preserveWhitespace = PreserveState.None;
_lastWasMultiline = true;
break;
case "sub":
_writer.Write('~');
_writer.Write(']');
break;
case "sup":
_writer.Write('^');
_writer.Write(']');
break;
}
}
