public static string FormatContentAsHTML(string content)
{
HtmlFormatter formatter = new HtmlFormatter();
StringWriter writer = new StringWriter();
HtmlFormatterOptions options = new HtmlFormatterOptions(' ',0,80,HtmlFormatterCase.LowerCase,HtmlFormatterCase.LowerCase,false);
formatter.Format( content, writer, options );
return writer.GetStringBuilder().ToString();
}
public static string FormatContentAsHTML(string content)
{
HtmlFormatter formatter = new HtmlFormatter();
StringWriter writer = new StringWriter();
HtmlFormatterOptions options = new HtmlFormatterOptions(' ', 0, 80, HtmlFormatterCase.LowerCase, HtmlFormatterCase.LowerCase, false);
formatter.Format(content, writer, options);
return(writer.GetStringBuilder().ToString());
}
public static string FormatContentAsXHTML(string content, string rootTag)
{
// first format
HtmlFormatter formatter = new HtmlFormatter();
StringWriter writer = new StringWriter();
HtmlFormatterOptions options = new HtmlFormatterOptions(' ',0,80,true);
string contentRoot = "<" + rootTag + " xmlns=\"http://www.w3.org/1999/xhtml\">"+content+"</" + rootTag + ">";
formatter.Format( contentRoot, writer, options );
return writer.GetStringBuilder().ToString();
}
public static string FormatContentAsXHTML(string content, string rootTag)
{
// first format
HtmlFormatter formatter = new HtmlFormatter();
StringWriter writer = new StringWriter();
HtmlFormatterOptions options = new HtmlFormatterOptions(' ', 0, 80, true);
string contentRoot = "<" + rootTag + " xmlns=\"http://www.w3.org/1999/xhtml\">" + content + "</" + rootTag + ">";
formatter.Format(contentRoot, writer, options);
return(writer.GetStringBuilder().ToString());
}
public void Format(string input, TextWriter output, HtmlFormatterOptions options)
{
// Determine if we are outputting xhtml
bool makeXhtml = options.MakeXhtml;
// Save the max line length
int maxLineLength = options.MaxLineLength;
// Make the indent string
string indentString = new String(options.IndentChar, options.IndentSize);
char[] chars = input.ToCharArray();
Stack tagStack = new Stack();
Stack writerStack = new Stack();
// The previous begin or end tag that was seen
FormatInfo previousTag = null;
// The current begin or end tag that was seen
FormatInfo currentTag = null;
// The text between previousTag and currentTag
string text = String.Empty;
// True if we've seen whitespace at the end of the last text outputted
bool sawWhiteSpace = false;
// True if the last tag seen was self-terminated with a '/>'
bool sawSelfTerminatingTag = false;
// True if we saw a tag that we decided not to render
bool ignoredLastTag = false;
// Put the initial writer on the stack
HtmlWriter writer = new HtmlWriter(output, indentString, maxLineLength);
writerStack.Push(writer);
Token t = HtmlTokenizer.GetFirstToken(chars);
Token lastToken = t;
while (t != null)
{
writer = (HtmlWriter)writerStack.Peek();
switch (t.Type)
{
case Token.AttrName:
if (makeXhtml)
{
string attrName = String.Empty;
if (!previousTag.tagInfo.IsXml)
{
// Need to lowercase the HTML attribute names for XHTML
attrName = t.Text.ToLower();
}
else
{
attrName = t.Text;
}
writer.Write(attrName);
// If we are trying to be compliant XHTML, don't allow attribute minimization
Token nextToken = HtmlTokenizer.GetNextToken(t);
if (nextToken.Type != Token.EqualsChar)
{
writer.Write("=\"" + attrName + "\"");
}
}
else
{
// Convert the case of the attribute if the tag isn't xml
if (!previousTag.tagInfo.IsXml)
{
if (options.AttributeCasing == HtmlFormatterCase.UpperCase)
{
writer.Write(t.Text.ToUpper());
}
else if (options.AttributeCasing == HtmlFormatterCase.LowerCase)
{
writer.Write(t.Text.ToLower());
}
else
{
writer.Write(t.Text);
}
}
else
{
writer.Write(t.Text);
}
}
break;
case Token.AttrVal:
if (makeXhtml && (lastToken.Type != Token.DoubleQuote) && (lastToken.Type != Token.SingleQuote))
{
// If the attribute value isn't quoted, double quote it, replacing the inner double quotes
writer.Write('\"');
writer.Write(t.Text.Replace("\"", """));
writer.Write('\"');
}
else
{
writer.Write(t.Text);
}
break;
case Token.CloseBracket:
if (makeXhtml)
{
if (ignoredLastTag)
{
// Don't render the close bracket if we ignored the last tag
ignoredLastTag = false;
}
else
{
if (sawSelfTerminatingTag && (!previousTag.tagInfo.IsComment))
{
// If we saw a self terminating tag, that doesn't have the forward slash, put it in (except for comments)
writer.Write(" />");
}
else
{
// If we are just closing a normal tag, just put in a normal close bracket
writer.Write('>');
}
}
}
else
{
// If there's no XHTML to be made, just put in a normal close bracket
writer.Write('>');
}
break;
case Token.DoubleQuote:
writer.Write('\"');
break;
case Token.Empty:
break;
case Token.EqualsChar:
writer.Write('=');
break;
case Token.Error:
if (lastToken.Type == Token.OpenBracket)
{
// Since we aren't outputting open brackets right away, we might have to output one now
writer.Write('<');
}
writer.Write(t.Text);
break;
case Token.ForwardSlash:
case Token.OpenBracket:
// Just push these symbols on the stack for now... output them when we write the tag
break;
case Token.SelfTerminating:
previousTag.isEndTag = true;
if (!previousTag.tagInfo.NoEndTag)
{
// If the tag that is self-terminating is normally not a self-closed tag
// then we've placed an entry on the stack for it. Since it's self terminating, we now need
// to pop that item off of the tag stack
tagStack.Pop();
// If it was a self-closed Xml tag, then we also need to clean up the writerStack
if (previousTag.tagInfo.IsXml)
{
HtmlWriter oldWriter = (HtmlWriter)writerStack.Pop();
writer = (HtmlWriter)writerStack.Peek();
// Since a self-closed xml tag can't have any text content, we can just write out the formatted contents
writer.Write(oldWriter.Content);
}
}
if ((lastToken.Type == Token.Whitespace) && (lastToken.Text.Length > 0))
{
writer.Write("/>");
}
else
{
writer.Write(" />");
}
break;
case Token.SingleQuote:
writer.Write('\'');
break;
case Token.XmlDirective:
writer.WriteLineIfNotOnNewLine();
writer.Write('<');
writer.Write(t.Text);
writer.Write('>');
writer.WriteLineIfNotOnNewLine();
ignoredLastTag = true;
break;
case Token.TagName:
case Token.Comment:
case Token.InlineServerScript:
string tagName;
// Reset the self terminating tag flag
sawSelfTerminatingTag = false;
// Create or get the proper tagInfo, depending on the type of token
TagInfo info;
if (t.Type == Token.Comment)
{
// Handle comment tags
tagName = t.Text;
info = new TagInfo(t.Text, commentTag);
}
else if (t.Type == Token.InlineServerScript)
{
// Handle server-side script tags
string script = t.Text.Trim();
script = script.Substring(1);
tagName = script;
if (script.StartsWith("%@"))
{
// Directives are block tags
info = new TagInfo(script, directiveTag);
}
else
{
// Other server side script tags aren't
info = new TagInfo(script, otherServerSideScriptTag);
}
}
else
{
// Otherwise, this is a normal tag, and try to get a TagInfo for it
tagName = t.Text;
info = tagTable[tagName] as TagInfo;
if (info == null)
{
// if we couldn't find one, create a copy of the unknownTag with a new tagname
if (tagName.IndexOf(':') > -1)
{
// If it is a prefixed tag, it's probably unknown XML
info = new TagInfo(tagName, unknownXmlTag);
}
else if (writer is XmlWriter)
{
info = new TagInfo(tagName, nestedXmlTag);
}
else
{
// If it is a not prefixed, it's probably an unknown HTML tag
info = new TagInfo(tagName, unknownHtmlTag);
}
}
else
{
// If it's not an unknown tag, converting to the desired case (and leave as is for PreserveCase)
if ((options.ElementCasing == HtmlFormatterCase.LowerCase) || makeXhtml)
{
tagName = info.TagName;
}
else if (options.ElementCasing == HtmlFormatterCase.UpperCase)
{
tagName = info.TagName.ToUpper();
}
}
}
if (previousTag == null)
{
// Special case for the first tag seen
previousTag = new FormatInfo(info, false);
// Since this is the first tag, set it's indent to 0
previousTag.indent = 0;
// Push it on the stack
tagStack.Push(previousTag);
// And output the preceeding text
writer.Write(text);
if (info.IsXml)
{
// When we encounter an xml block, create a new writer to contain the inner content of the xml
HtmlWriter newWriter = new XmlWriter(writer.Indent, info.TagName, indentString, maxLineLength);
writerStack.Push(newWriter);
writer = newWriter;
}
if (lastToken.Type == Token.ForwardSlash)
{
// If this is an end tag, output the proper prefix
writer.Write("</");
}
else
{
writer.Write('<');
}
// Write the name
writer.Write(tagName);
// Indicate that we've written out the last text block
text = String.Empty;
}
else
{
// Put the new tag in the next spot
currentTag = new FormatInfo(info, (lastToken.Type == Token.ForwardSlash));
WhiteSpaceType whiteSpaceType;
if (previousTag.isEndTag)
{
// If the previous tag is an end tag, we need to check the following whitespace
whiteSpaceType = previousTag.tagInfo.FollowingWhiteSpaceType;
}
else
{
// otherwise check the initial inner whitespace
whiteSpaceType = previousTag.tagInfo.InnerWhiteSpaceType;
}
// Flag that indicates if the previous tag (before the text) is an inline tag
bool inline = previousTag.tagInfo.IsInline;
bool emptyXml = false;
bool firstOrLastUnknownXmlText = false;
if (writer is XmlWriter)
{
// if we're in an xml block
XmlWriter xmlWriter = (XmlWriter)writer;
if (xmlWriter.IsUnknownXml)
{
// Special case for unknown XML tags
// Determine if this is the first or last xml text in an unknown xml tag, so we know to preserve the text content here
firstOrLastUnknownXmlText = (((previousTag.isBeginTag) && (previousTag.tagInfo.TagName.ToLower() == xmlWriter.TagName.ToLower())) ||
((currentTag.isEndTag) && (currentTag.tagInfo.TagName.ToLower() == xmlWriter.TagName.ToLower()))) &&
(!FormattedTextWriter.IsWhiteSpace(text));
}
if (previousTag.isBeginTag)
{
if (FormattedTextWriter.IsWhiteSpace(text))
{
if ((xmlWriter.IsUnknownXml) && (currentTag.isEndTag) &&
(previousTag.tagInfo.TagName.ToLower() == currentTag.tagInfo.TagName.ToLower()))
{
// Special case for unknown XML tags:
// If the previous tag is an open tag and the next tag is the corresponding close tag and the text is only whitespace, also
// treat the tag as inline, so the begin and end tag appear on the same line
inline = true;
emptyXml = true;
// Empty the text since we want the open and close tag to be touching
text = "";
}
}
else
{
if (!xmlWriter.IsUnknownXml)
{
// If there is non-whitespace text and we're in a normal Xml block, then remember that there was text
xmlWriter.ContainsText = true;
}
}
}
}
// Flag that indicates if we want to preserve whitespace in the front of the text
bool frontWhitespace = true;
if ((previousTag.isBeginTag) && (previousTag.tagInfo.PreserveContent))
{
// If the previous tag is a begin tag and we're preserving the content as-is, just write out the text
writer.Write(text);
}
else
{
if (whiteSpaceType == WhiteSpaceType.NotSignificant)
{
// If the whitespace is not significant in this location
if (!inline && !firstOrLastUnknownXmlText)
{
// If the previous tag is not an inline tag, write out a new line
writer.WriteLineIfNotOnNewLine();
// Since we've written out a newline, we no longer need to preserve front whitespace
frontWhitespace = false;
}
}
else if (whiteSpaceType == WhiteSpaceType.Significant)
{
// If the whitespace in this location is significant
if (FormattedTextWriter.HasFrontWhiteSpace(text))
{
// If there is whitespace in the front, that means we can insert more whitespace without
// changing rendering behavior
if (!inline && !firstOrLastUnknownXmlText)
{
// Only insert a new line if the tag isn't inline
writer.WriteLineIfNotOnNewLine();
frontWhitespace = false;
}
}
}
else if (whiteSpaceType == WhiteSpaceType.CarryThrough)
{
// If the whitespace in this location is carry through (meaning whitespace at the end of the previous
// text block eats up any whitespace in this location
if ((sawWhiteSpace) || (FormattedTextWriter.HasFrontWhiteSpace(text)))
{
// If the last text block ended in whitspace or if there is already whitespace in this location
// we can add a new line
if (!inline && !firstOrLastUnknownXmlText)
{
// Only add it if the previous tag isn't inline
writer.WriteLineIfNotOnNewLine();
frontWhitespace = false;
}
}
}
if (previousTag.isBeginTag)
{
// If the previous tag is a begin tag
if (!previousTag.tagInfo.NoIndent && !inline)
{
// Indent if desired
writer.Indent++;
}
}
// Special case for unknown XML tags:
if (firstOrLastUnknownXmlText)
{
writer.Write(text);
}
else
{
writer.WriteLiteral(text, frontWhitespace);
}
}
if (currentTag.isEndTag)
{
// If the currentTag is an end tag
if (!currentTag.tagInfo.NoEndTag)
{
// Figure out where the corresponding begin tag is
ArrayList popped = new ArrayList();
FormatInfo formatInfo = null;
bool foundOpenTag = false;
bool allowPartial = false;
if ((currentTag.tagInfo.Flags & FormattingFlags.AllowPartialTags) != 0)
{
// Once we've exited a tag that allows partial tags, clear the flag
allowPartial = true;
}
// Start popping off the tag stack if there are tags on the stack
if (tagStack.Count > 0)
{
// Keep popping until we find the right tag, remember what we've popped off
formatInfo = (FormatInfo)tagStack.Pop();
popped.Add(formatInfo);
while ((tagStack.Count > 0) && (formatInfo.tagInfo.TagName.ToLower() != currentTag.tagInfo.TagName.ToLower()))
{
if ((formatInfo.tagInfo.Flags & FormattingFlags.AllowPartialTags) != 0)
{
// Special case for tags that allow partial tags inside of them.
allowPartial = true;
break;
}
formatInfo = (FormatInfo)tagStack.Pop();
popped.Add(formatInfo);
}
if (formatInfo.tagInfo.TagName.ToLower() != currentTag.tagInfo.TagName.ToLower())
{
// If we didn't find the corresponding open tag, push everything back on
for (int i = popped.Count - 1; i >= 0; i--)
{
tagStack.Push(popped[i]);
}
}
else
{
foundOpenTag = true;
for (int i = 0; i < popped.Count - 1; i++)
{
FormatInfo fInfo = (FormatInfo)popped[i];
if (fInfo.tagInfo.IsXml)
{
// If we have an xml tag that was unclosed, we need to clean up the xml stack
if (writerStack.Count > 1)
{
HtmlWriter oldWriter = (HtmlWriter)writerStack.Pop();
writer = (HtmlWriter)writerStack.Peek();
// Write out the contents of the old writer
writer.Write(oldWriter.Content);
}
}
if (!fInfo.tagInfo.NoEndTag)
{
writer.WriteLineIfNotOnNewLine();
writer.Indent = fInfo.indent;
if ((makeXhtml) && (!allowPartial))
{
// If we're trying to be XHTML compliant, close unclosed child tags
// Don't close if we are under a tag that allows partial tags
writer.Write("</"+fInfo.tagInfo.TagName+">");
}
}
}
// Set the indent to the indent of the corresponding open tag
writer.Indent = formatInfo.indent;
}
}
if (foundOpenTag || allowPartial)
{
// Only write out the close tag if there was a corresponding open tag or we are under
// a tag that allows partial tags
if ((!emptyXml) &&
(!firstOrLastUnknownXmlText) &&
(!currentTag.tagInfo.IsInline) &&
(!currentTag.tagInfo.PreserveContent) &&
( FormattedTextWriter.IsWhiteSpace(text) ||
FormattedTextWriter.HasBackWhiteSpace(text) ||
(currentTag.tagInfo.FollowingWhiteSpaceType == WhiteSpaceType.NotSignificant)
) &&
( !(currentTag.tagInfo is TDTagInfo) ||
FormattedTextWriter.HasBackWhiteSpace(text)
)
)
{
// Insert a newline before the next tag, if allowed
writer.WriteLineIfNotOnNewLine();
}
// Write out the end tag prefix
writer.Write("</");
// Finally, write out the tag name
writer.Write(tagName);
}
else
{
ignoredLastTag = true;
}
if (currentTag.tagInfo.IsXml)
{
// If we have an xml tag that was unclosed, we need to clean up the xml stack
if (writerStack.Count > 1)
{
HtmlWriter oldWriter = (HtmlWriter)writerStack.Pop();
writer = (HtmlWriter)writerStack.Peek();
// Write out the contents of the old writer
writer.Write(oldWriter.Content);
}
}
}
else
{
ignoredLastTag = true;
}
}
else
{
// If the currentTag is a begin tag
bool done = false;
// Close implicitClosure tags
while (!done && (tagStack.Count > 0))
{
// Peek at the top of the stack to see the last unclosed tag
FormatInfo fInfo = (FormatInfo)tagStack.Peek();
// If the currentTag can't be a child of that tag, then we need to close that tag
done = fInfo.tagInfo.CanContainTag(currentTag.tagInfo);
if (!done)
{
// Pop it off and write a close tag for it
// REVIEW: Will XML tags always be able to contained in any tag? If not we should be cleaning up the writerStack as well...
tagStack.Pop();
writer.Indent = fInfo.indent;
// If we're trying to be XHTML compliant, write in the end tags
if (makeXhtml)
{
if (!fInfo.tagInfo.IsInline)
{
// Only insert a newline if we are allowed to
writer.WriteLineIfNotOnNewLine();
}
writer.Write("</"+fInfo.tagInfo.TagName+">");
}
}
}
// Remember the indent so we can properly indent the corresponding close tag for this open tag
currentTag.indent = writer.Indent;
if ((!firstOrLastUnknownXmlText) &&
(!currentTag.tagInfo.IsInline) &&
(!currentTag.tagInfo.PreserveContent) &&
( (FormattedTextWriter.IsWhiteSpace(text) || FormattedTextWriter.HasBackWhiteSpace(text)) ||
( (text.Length == 0) &&
( ((previousTag.isBeginTag) && (previousTag.tagInfo.InnerWhiteSpaceType == WhiteSpaceType.NotSignificant)) ||
((previousTag.isEndTag) && (previousTag.tagInfo.FollowingWhiteSpaceType == WhiteSpaceType.NotSignificant))
)
)
)
)
{
// Insert a newline before the currentTag if we are allowed to
writer.WriteLineIfNotOnNewLine();
}
if (!currentTag.tagInfo.NoEndTag)
{
// Only push tags with close tags onto the stack
tagStack.Push(currentTag);
}
else
{
// If this tag doesn't have a close tag, remember that it is self terminating
sawSelfTerminatingTag = true;
}
if (currentTag.tagInfo.IsXml)
{
// When we encounter an xml block, create a new writer to contain the inner content of the xml
HtmlWriter newWriter = new XmlWriter(writer.Indent, currentTag.tagInfo.TagName, indentString, maxLineLength);
writerStack.Push(newWriter);
writer = newWriter;
}
writer.Write('<');
// Finally, write out the tag name
writer.Write(tagName);
}
// Remember if the text ended in whitespace
sawWhiteSpace = FormattedTextWriter.HasBackWhiteSpace(text);
// Clear out the text, since we have already outputted it
text = String.Empty;
previousTag = currentTag;
}
break;
case Token.ServerScriptBlock:
case Token.ClientScriptBlock:
case Token.Style:
case Token.TextToken:
// Remember all these types of tokens as text so we can output them between the tags
if (makeXhtml)
{
// UNDONE: Need to implement this in the tokenizer, etc...
text += t.Text.Replace(" ", " ");
}
else
{
text += t.Text;
}
break;
case Token.Whitespace:
if (t.Text.Length > 0)
{
writer.Write(' ');
}
break;
default:
Debug.Fail("Invalid token type!");
break;
}
// Remember what the last token was
lastToken = t;
// Get the next token
t = HtmlTokenizer.GetNextToken(t);
}
if (text.Length > 0)
{
// Write out the last text if there is any
writer.Write(text);
}
while (writerStack.Count > 1)
{
// If we haven't cleared out the writer stack, do it
HtmlWriter oldWriter = (HtmlWriter)writerStack.Pop();
writer = (HtmlWriter)writerStack.Peek();
writer.Write(oldWriter.Content);
}
// Flush the writer original
writer.Flush();
}
