/// <summary>
/// Calculates a absolute node coordinates
/// </summary>
/// <param name="baseNodeCoordinates">Base node coordinates</param>
/// <param name="lineBreakCount">Number of line breaks</param>
/// <param name="charRemainderCount">Number of characters left</param>
/// <returns>Absolute node coordinates</returns>
public static SourceCodeNodeCoordinates CalculateAbsoluteNodeCoordinates(
SourceCodeNodeCoordinates baseNodeCoordinates, int lineBreakCount, int charRemainderCount)
{
int absoluteLineNumber;
int absoluteColumnNumber;
if (!baseNodeCoordinates.IsEmpty)
{
int baseLineNumber = baseNodeCoordinates.LineNumber;
int baseColumnNumber = baseNodeCoordinates.ColumnNumber;
if (lineBreakCount > 0)
{
absoluteLineNumber = baseLineNumber + lineBreakCount;
absoluteColumnNumber = charRemainderCount + 1;
}
else
{
absoluteLineNumber = baseLineNumber;
absoluteColumnNumber = baseColumnNumber + charRemainderCount;
}
}
else
{
absoluteLineNumber = lineBreakCount + 1;
absoluteColumnNumber = charRemainderCount + 1;
}
var absoluteNodeCoordinates = new SourceCodeNodeCoordinates(absoluteLineNumber, absoluteColumnNumber);
return(absoluteNodeCoordinates);
}
/// <summary>
/// Gets a source fragment
/// </summary>
/// <param name="sourceCode">Source code</param>
/// <param name="nodePosition">Current node position</param>
/// <param name="tabSize">Number of spaces in the tab</param>
/// <param name="maxFragmentLength">Maximum length of the source fragment</param>
/// <returns>Source fragment</returns>
public static string GetSourceFragment(string sourceCode, int nodePosition,
byte tabSize = DEFAULT_TAB_SIZE, int maxFragmentLength = DEFAULT_MAX_FRAGMENT_LENGTH)
{
SourceCodeNodeCoordinates nodeCoordinates = CalculateNodeCoordinates(sourceCode, nodePosition);
return(GetSourceFragment(sourceCode, nodeCoordinates, tabSize));
}
/// <summary>
/// Constructs instance of HTML attribute
/// </summary>
/// <param name="name">Name</param>
/// <param name="value">Value</param>
/// <param name="type">Type</param>
/// <param name="nameCoordinates">Coordinates of name</param>
/// <param name="valueCoordinates">Coordinates of value</param>
public HtmlAttribute(string name, string value, HtmlAttributeType type,
SourceCodeNodeCoordinates nameCoordinates, SourceCodeNodeCoordinates valueCoordinates)
{
Name = name;
Value = value;
Type = type;
NameCoordinates = nameCoordinates;
ValueCoordinates = valueCoordinates;
}
/// <summary>
/// Calculates a node coordinates
/// </summary>
/// <param name="sourceCode">Source code</param>
/// <param name="nodePosition">Current node position</param>
/// <returns>Node coordinates</returns>
public static SourceCodeNodeCoordinates CalculateNodeCoordinates(string sourceCode, int nodePosition)
{
if (string.IsNullOrEmpty(sourceCode) || nodePosition >= sourceCode.Length)
{
return(SourceCodeNodeCoordinates.Empty);
}
int fragmentLength = nodePosition + 1;
int lineBreakCount;
int charRemainderCount;
CalculateLineBreakCount(sourceCode, 0, fragmentLength,
out lineBreakCount, out charRemainderCount);
var nodeCoordinates = new SourceCodeNodeCoordinates(lineBreakCount + 1, charRemainderCount + 1);
return(nodeCoordinates);
}
/// <summary>
/// Calculates a absolute node coordinates
/// </summary>
/// <param name="baseNodeCoordinates">Base node coordinates</param>
/// <param name="relativeNodeCoordinates">Relative node coordinates</param>
/// <returns>Absolute node coordinates</returns>
public static SourceCodeNodeCoordinates CalculateAbsoluteNodeCoordinates(
SourceCodeNodeCoordinates baseNodeCoordinates, SourceCodeNodeCoordinates relativeNodeCoordinates)
{
int relativeLineNumber = relativeNodeCoordinates.LineNumber;
int relativeColumnNumber = relativeNodeCoordinates.ColumnNumber;
int absoluteLineNumber;
int absoluteColumnNumber;
if (!baseNodeCoordinates.IsEmpty)
{
int baseLineNumber = baseNodeCoordinates.LineNumber;
int baseColumnNumber = baseNodeCoordinates.ColumnNumber;
absoluteLineNumber = baseLineNumber;
absoluteColumnNumber = baseColumnNumber;
if (relativeLineNumber > 0)
{
if (relativeLineNumber == 1)
{
if (relativeColumnNumber > 0)
{
absoluteColumnNumber = baseColumnNumber + relativeColumnNumber - 1;
}
}
else
{
absoluteLineNumber = baseLineNumber + relativeLineNumber - 1;
absoluteColumnNumber = relativeColumnNumber;
}
}
}
else
{
absoluteLineNumber = relativeLineNumber;
absoluteColumnNumber = relativeColumnNumber;
}
var absoluteNodeCoordinates = new SourceCodeNodeCoordinates(absoluteLineNumber, absoluteColumnNumber);
return absoluteNodeCoordinates;
}
/// <summary>
/// Calculates a absolute node coordinates
/// </summary>
/// <param name="baseNodeCoordinates">Base node coordinates</param>
/// <param name="relativeNodeCoordinates">Relative node coordinates</param>
/// <returns>Absolute node coordinates</returns>
public static SourceCodeNodeCoordinates CalculateAbsoluteNodeCoordinates(
SourceCodeNodeCoordinates baseNodeCoordinates, SourceCodeNodeCoordinates relativeNodeCoordinates)
{
int relativeLineNumber = relativeNodeCoordinates.LineNumber;
int relativeColumnNumber = relativeNodeCoordinates.ColumnNumber;
int absoluteLineNumber;
int absoluteColumnNumber;
if (!baseNodeCoordinates.IsEmpty)
{
int baseLineNumber = baseNodeCoordinates.LineNumber;
int baseColumnNumber = baseNodeCoordinates.ColumnNumber;
absoluteLineNumber = baseLineNumber;
absoluteColumnNumber = baseColumnNumber;
if (relativeLineNumber > 0)
{
if (relativeLineNumber == 1)
{
if (relativeColumnNumber > 0)
{
absoluteColumnNumber = baseColumnNumber + relativeColumnNumber - 1;
}
}
else
{
absoluteLineNumber = baseLineNumber + relativeLineNumber - 1;
absoluteColumnNumber = relativeColumnNumber;
}
}
}
else
{
absoluteLineNumber = relativeLineNumber;
absoluteColumnNumber = relativeColumnNumber;
}
var absoluteNodeCoordinates = new SourceCodeNodeCoordinates(absoluteLineNumber, absoluteColumnNumber);
return(absoluteNodeCoordinates);
}
/// <summary>
/// Calculates a absolute node coordinates
/// </summary>
/// <param name="baseNodeCoordinates">Base node coordinates</param>
/// <param name="additionalContent">Additional content</param>
/// <returns>Absolute node coordinates</returns>
public static SourceCodeNodeCoordinates CalculateAbsoluteNodeCoordinates(
SourceCodeNodeCoordinates baseNodeCoordinates, string additionalContent)
{
int lineBreakCount = 0;
int charRemainderCount = 0;
if (!string.IsNullOrEmpty(additionalContent))
{
CalculateLineBreakCount(additionalContent, out lineBreakCount, out charRemainderCount);
}
int absoluteLineNumber;
int absoluteColumnNumber;
if (!baseNodeCoordinates.IsEmpty)
{
int baseLineNumber = baseNodeCoordinates.LineNumber;
int baseColumnNumber = baseNodeCoordinates.ColumnNumber;
if (lineBreakCount > 0)
{
absoluteLineNumber = baseLineNumber + lineBreakCount;
absoluteColumnNumber = charRemainderCount + 1;
}
else
{
absoluteLineNumber = baseLineNumber;
absoluteColumnNumber = baseColumnNumber + charRemainderCount;
}
}
else
{
absoluteLineNumber = lineBreakCount + 1;
absoluteColumnNumber = charRemainderCount + 1;
}
var absoluteNodeCoordinates = new SourceCodeNodeCoordinates(absoluteLineNumber, absoluteColumnNumber);
return(absoluteNodeCoordinates);
}
/// <summary>
/// Calculates a absolute node coordinates
/// </summary>
/// <param name="baseNodeCoordinates">Base node coordinates</param>
/// <param name="additionalContent">Additional content</param>
/// <returns>Absolute node coordinates</returns>
public static SourceCodeNodeCoordinates CalculateAbsoluteNodeCoordinates(
SourceCodeNodeCoordinates baseNodeCoordinates, string additionalContent)
{
int lineBreakCount = 0;
int charRemainderCount = 0;
if (!string.IsNullOrEmpty(additionalContent))
{
CalculateLineBreakCount(additionalContent, out lineBreakCount, out charRemainderCount);
}
int absoluteLineNumber;
int absoluteColumnNumber;
if (!baseNodeCoordinates.IsEmpty)
{
int baseLineNumber = baseNodeCoordinates.LineNumber;
int baseColumnNumber = baseNodeCoordinates.ColumnNumber;
if (lineBreakCount > 0)
{
absoluteLineNumber = baseLineNumber + lineBreakCount;
absoluteColumnNumber = charRemainderCount + 1;
}
else
{
absoluteLineNumber = baseLineNumber;
absoluteColumnNumber = baseColumnNumber + charRemainderCount;
}
}
else
{
absoluteLineNumber = lineBreakCount + 1;
absoluteColumnNumber = charRemainderCount + 1;
}
var absoluteNodeCoordinates = new SourceCodeNodeCoordinates(absoluteLineNumber, absoluteColumnNumber);
return absoluteNodeCoordinates;
}
/// <summary>
/// Initializes a new instance of the WebMarkupMin.Core.CodeProcessingException class
/// with a specified error message, node coordinates, source fragment
/// and reference to the inner exception that is the cause of this exception
/// </summary>
/// <param name="message">Error message that explains the reason for the exception</param>
/// <param name="nodeCoordinates">Node coordinates</param>
/// <param name="sourceFragment">Source fragment</param>
/// <param name="innerException">Exception that is the cause of the current exception</param>
protected CodeProcessingException(string message, SourceCodeNodeCoordinates nodeCoordinates,
string sourceFragment, Exception innerException)
: this(message, nodeCoordinates.LineNumber, nodeCoordinates.ColumnNumber,
sourceFragment, innerException)
{
}
/// <summary>
/// Minify a Knockout binding expression
/// </summary>
/// <param name="context">Markup parsing context</param>
/// <param name="expressionCoordinates">Coordinates of expression</param>
/// <param name="expression">Binding expression</param>
/// <returns>Minified binding expression</returns>
private string MinifyKnockoutBindingExpression(MarkupParsingContext context,
SourceCodeNodeCoordinates expressionCoordinates, string expression)
{
return MinifyKnockoutBindingExpression(context, SourceCodeNodeCoordinates.Empty, expressionCoordinates,
expression);
}
/// <summary>
/// Gets a source fragment
/// </summary>
/// <param name="sourceCode">Source code</param>
/// <param name="nodeCoordinates">Node coordinates</param>
/// <param name="tabSize">Number of spaces in the tab</param>
/// <param name="maxFragmentLength">Maximum length of the source fragment</param>
/// <returns>Source fragment</returns>
public static string GetSourceFragment(string sourceCode,
SourceCodeNodeCoordinates nodeCoordinates, byte tabSize = DEFAULT_TAB_SIZE,
int maxFragmentLength = DEFAULT_MAX_FRAGMENT_LENGTH)
{
string sourceFragment = string.Empty;
int lineNumber = nodeCoordinates.LineNumber;
int columnNumber = nodeCoordinates.ColumnNumber;
if (!string.IsNullOrEmpty(sourceCode))
{
int previousLineNumber = lineNumber - 1;
int currentLineNumber = lineNumber;
int nextLineNumber = lineNumber + 1;
string previousLine = string.Empty;
string currentLine = string.Empty;
string nextLine = string.Empty;
int lineCount = 0;
int lineBreakPosition = int.MinValue;
int lineBreakLength = 0;
do
{
string line;
int startLinePosition = (lineBreakPosition == int.MinValue) ? 0 : lineBreakPosition + lineBreakLength;
FindNextLineBreak(sourceCode, startLinePosition, out lineBreakPosition, out lineBreakLength);
if (lineBreakPosition != -1)
{
line = sourceCode.Substring(startLinePosition, lineBreakPosition - startLinePosition);
}
else
{
line = sourceCode.Substring(startLinePosition);
}
lineCount++;
if (lineCount == previousLineNumber)
{
previousLine = line;
}
else if (lineCount == currentLineNumber)
{
currentLine = line;
}
else if (lineCount == nextLineNumber)
{
nextLine = line;
}
}
while (lineBreakPosition != -1 && lineCount <= nextLineNumber);
int lineNumberSize = (nextLineNumber).ToString(CultureInfo.InvariantCulture).Length;
if (currentLineNumber == lineCount)
{
lineNumberSize = currentLineNumber.ToString(CultureInfo.InvariantCulture).Length;
}
int fragmentStartPosition;
int fragmentLength;
CalculateCutPositions(currentLine, columnNumber, maxFragmentLength,
out fragmentStartPosition, out fragmentLength);
StringBuilder sourceFragmentBuilder = StringBuilderPool.GetBuilder();
if (currentLine.Length > 0)
{
if (previousLine.Length > 0)
{
sourceFragmentBuilder.AppendLine(FormatSourceCodeLine(previousLine,
new SourceCodeNodeCoordinates(previousLineNumber, 0),
lineNumberSize, fragmentStartPosition, fragmentLength, tabSize));
}
sourceFragmentBuilder.AppendLine(FormatSourceCodeLine(currentLine,
new SourceCodeNodeCoordinates(currentLineNumber, columnNumber),
lineNumberSize, fragmentStartPosition, fragmentLength, tabSize));
if (nextLine.Length > 0)
{
sourceFragmentBuilder.AppendLine(FormatSourceCodeLine(nextLine,
new SourceCodeNodeCoordinates(nextLineNumber, 0),
lineNumberSize, fragmentStartPosition, fragmentLength, tabSize));
}
}
sourceFragment = sourceFragmentBuilder.ToString();
StringBuilderPool.ReleaseBuilder(sourceFragmentBuilder);
}
return sourceFragment;
}
/// <summary>
/// Calculates a node coordinates
/// </summary>
/// <param name="sourceCode">Source code</param>
/// <param name="nodePosition">Current node position</param>
/// <returns>Node coordinates</returns>
public static SourceCodeNodeCoordinates CalculateNodeCoordinates(string sourceCode, int nodePosition)
{
if (string.IsNullOrEmpty(sourceCode) || nodePosition >= sourceCode.Length)
{
return SourceCodeNodeCoordinates.Empty;
}
int fragmentLength = nodePosition + 1;
int lineBreakCount;
int charRemainderCount;
CalculateLineBreakCount(sourceCode, 0, fragmentLength,
out lineBreakCount, out charRemainderCount);
var nodeCoordinates = new SourceCodeNodeCoordinates(lineBreakCount + 1, charRemainderCount + 1);
return nodeCoordinates;
}
/// <summary>
/// XML declaration handler
/// </summary>
/// <param name="context">Markup parsing context</param>
/// <param name="xmlDeclaration">XML declaration</param>
private void XmlDeclarationHandler(MarkupParsingContext context, string xmlDeclaration)
{
_currentNodeType = HtmlNodeType.XmlDeclaration;
WhitespaceMinificationMode whitespaceMinificationMode = _settings.WhitespaceMinificationMode;
if (whitespaceMinificationMode != WhitespaceMinificationMode.None)
{
// Processing of whitespace, that followed before the document type declaration
TrimEndLastBufferItem();
}
if (_settings.UseXhtmlSyntax)
{
XmlMinifier innerXmlMinifier = GetInnerXmlMinifierInstance();
MarkupMinificationResult minificationResult = innerXmlMinifier.Minify(xmlDeclaration);
if (minificationResult.Errors.Count == 0)
{
_buffer.Add(minificationResult.MinifiedContent);
}
else
{
string sourceCode = context.SourceCode;
var documentCoordinates = context.NodeCoordinates;
foreach (MinificationErrorInfo error in minificationResult.Errors)
{
var xmlNodeCoordinates = new SourceCodeNodeCoordinates(error.LineNumber, error.ColumnNumber);
var absoluteNodeCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
documentCoordinates, xmlNodeCoordinates);
string sourceFragment = SourceCodeNavigator.GetSourceFragment(
sourceCode, absoluteNodeCoordinates);
string message = Strings.ErrorMessage_XmlDeclarationMinificationFailed;
WriteError(LogCategoryConstants.HtmlMinificationError, message, _fileContext,
absoluteNodeCoordinates.LineNumber, absoluteNodeCoordinates.ColumnNumber, sourceFragment);
}
}
}
else
{
string sourceCode = context.SourceCode;
SourceCodeNodeCoordinates xmlDeclarationCoordinates = context.NodeCoordinates;
WriteWarning(LogCategoryConstants.HtmlMinificationWarning,
Strings.WarningMessage_XmlDeclarationNotAllowed, _fileContext,
xmlDeclarationCoordinates.LineNumber, xmlDeclarationCoordinates.ColumnNumber,
SourceCodeNavigator.GetSourceFragment(sourceCode, xmlDeclarationCoordinates));
}
}
/// <summary>
/// Processes a inline style content
/// </summary>
/// <param name="context">Markup parsing context</param>
/// <param name="attribute">Attribute</param>
/// <returns>Processed inline style content</returns>
private string ProcessInlineStyleContent(MarkupParsingContext context, HtmlAttribute attribute)
{
string styleContent = attribute.Value;
string result = styleContent;
if (_settings.MinifyInlineCssCode && _cssMinifier.IsInlineCodeMinificationSupported)
{
CodeMinificationResult minificationResult = _cssMinifier.Minify(result, true);
if (minificationResult.Errors.Count == 0)
{
result = minificationResult.MinifiedContent ?? string.Empty;
}
if (minificationResult.Errors.Count > 0 || minificationResult.Warnings.Count > 0)
{
string sourceCode = context.SourceCode;
SourceCodeNodeCoordinates tagCoordinates = context.NodeCoordinates;
SourceCodeNodeCoordinates attributeCoordinates = attribute.ValueCoordinates;
foreach (MinificationErrorInfo error in minificationResult.Errors)
{
var relativeErrorCoordinates = new SourceCodeNodeCoordinates(error.LineNumber, error.ColumnNumber);
SourceCodeNodeCoordinates absoluteErrorCoordinates = CalculateAbsoluteInlineCodeErrorCoordinates(
tagCoordinates, attributeCoordinates, relativeErrorCoordinates);
string sourceFragment = SourceCodeNavigator.GetSourceFragment(
sourceCode, absoluteErrorCoordinates);
string message = error.Message.Trim();
WriteError(LogCategoryConstants.CssMinificationError, message, _fileContext,
absoluteErrorCoordinates.LineNumber, absoluteErrorCoordinates.ColumnNumber, sourceFragment);
}
foreach (MinificationErrorInfo warning in minificationResult.Warnings)
{
var relativeErrorCoordinates = new SourceCodeNodeCoordinates(warning.LineNumber, warning.ColumnNumber);
SourceCodeNodeCoordinates absoluteErrorCoordinates = CalculateAbsoluteInlineCodeErrorCoordinates(
tagCoordinates, attributeCoordinates, relativeErrorCoordinates);
string sourceFragment = SourceCodeNavigator.GetSourceFragment(
sourceCode, absoluteErrorCoordinates);
string message = warning.Message.Trim();
WriteWarning(LogCategoryConstants.CssMinificationWarning, message, _fileContext,
absoluteErrorCoordinates.LineNumber, absoluteErrorCoordinates.ColumnNumber, sourceFragment);
}
}
}
else
{
result = result.Trim();
}
result = Utils.RemoveEndingSemicolon(result);
return result;
}
/// <summary>
/// Processes a inline script content
/// </summary>
/// <param name="context">Markup parsing context</param>
/// <param name="attribute">Attribute</param>
/// <returns>Processed inline script content</returns>
private string ProcessInlineScriptContent(MarkupParsingContext context, HtmlAttribute attribute)
{
string scriptContent = attribute.Value;
bool forHrefAttribute = (attribute.Name == "href");
string result = scriptContent;
if (_settings.MinifyInlineJsCode && _jsMinifier.IsInlineCodeMinificationSupported)
{
bool isJavascriptProtocolRemoved = false;
if (scriptContent.StartsWith(JS_PROTOCOL, StringComparison.OrdinalIgnoreCase))
{
result = _jsProtocolRegex.Replace(result, string.Empty);
isJavascriptProtocolRemoved = true;
}
CodeMinificationResult minificationResult = _jsMinifier.Minify(result, true);
if (minificationResult.Errors.Count == 0)
{
result = minificationResult.MinifiedContent ?? string.Empty;
}
if (minificationResult.Errors.Count > 0 || minificationResult.Warnings.Count > 0)
{
string sourceCode = context.SourceCode;
SourceCodeNodeCoordinates tagCoordinates = context.NodeCoordinates;
SourceCodeNodeCoordinates attributeCoordinates = attribute.ValueCoordinates;
foreach (MinificationErrorInfo error in minificationResult.Errors)
{
var relativeErrorCoordinates = new SourceCodeNodeCoordinates(error.LineNumber, error.ColumnNumber);
SourceCodeNodeCoordinates absoluteErrorCoordinates = CalculateAbsoluteInlineCodeErrorCoordinates(
tagCoordinates, attributeCoordinates, relativeErrorCoordinates);
string sourceFragment = SourceCodeNavigator.GetSourceFragment(
sourceCode, absoluteErrorCoordinates);
string message = error.Message.Trim();
WriteError(LogCategoryConstants.JsMinificationError, message, _fileContext,
absoluteErrorCoordinates.LineNumber, absoluteErrorCoordinates.ColumnNumber, sourceFragment);
}
foreach (MinificationErrorInfo warning in minificationResult.Warnings)
{
var relativeErrorCoordinates = new SourceCodeNodeCoordinates(warning.LineNumber, warning.ColumnNumber);
SourceCodeNodeCoordinates absoluteErrorCoordinates = CalculateAbsoluteInlineCodeErrorCoordinates(
tagCoordinates, attributeCoordinates, relativeErrorCoordinates);
string sourceFragment = SourceCodeNavigator.GetSourceFragment(
sourceCode, absoluteErrorCoordinates);
string message = warning.Message.Trim();
WriteWarning(LogCategoryConstants.JsMinificationWarning, message, _fileContext,
absoluteErrorCoordinates.LineNumber, absoluteErrorCoordinates.ColumnNumber, sourceFragment);
}
}
if (isJavascriptProtocolRemoved
&& (forHrefAttribute || !_settings.RemoveJsProtocolFromAttributes))
{
result = JS_PROTOCOL + result;
}
}
else
{
result = result.Trim();
if (!forHrefAttribute && _settings.RemoveJsProtocolFromAttributes)
{
result = _jsProtocolRegex.Replace(result, string.Empty);
}
}
result = Utils.RemoveEndingSemicolon(result);
return result;
}
/// <summary>
/// Processes a embedded SVG content
/// </summary>
/// <param name="context">Markup parsing context</param>
/// <param name="svgContent">Embedded SVG content</param>
/// <returns>Processed embedded SVG content</returns>
private string ProcessEmbeddedSvgContent(MarkupParsingContext context, string svgContent)
{
string result = string.Empty;
XmlMinifier innerXmlMinifier = GetInnerXmlMinifierInstance();
MarkupMinificationResult minificationResult = innerXmlMinifier.Minify(svgContent);
if (minificationResult.Errors.Count == 0)
{
result = minificationResult.MinifiedContent ?? string.Empty;
}
else
{
string sourceCode = context.SourceCode;
var documentCoordinates = context.NodeCoordinates;
foreach (MinificationErrorInfo error in minificationResult.Errors)
{
var xmlNodeCoordinates = new SourceCodeNodeCoordinates(error.LineNumber, error.ColumnNumber);
var absoluteNodeCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
documentCoordinates, xmlNodeCoordinates);
string sourceFragment = SourceCodeNavigator.GetSourceFragment(
sourceCode, absoluteNodeCoordinates);
string message = string.Format(Strings.ErrorMessage_MarkupMinificationFailed,
"SVG", error.Message);
WriteError(LogCategoryConstants.HtmlMinificationError, message, _fileContext,
absoluteNodeCoordinates.LineNumber, absoluteNodeCoordinates.ColumnNumber, sourceFragment);
}
}
return result;
}
/// <summary>
/// Processes a embedded style content
/// </summary>
/// <param name="context">Markup parsing context</param>
/// <param name="content">Embedded style content</param>
/// <param name="contentType">Content type (MIME type) of the style</param>
/// <returns>Processed embedded style content</returns>
private string ProcessEmbeddedStyleContent(MarkupParsingContext context, string content, string contentType)
{
string processedContentType = (!string.IsNullOrWhiteSpace(contentType)) ?
contentType.Trim().ToLowerInvariant() : CSS_CONTENT_TYPE;
bool minifyWhitespace = (_settings.WhitespaceMinificationMode != WhitespaceMinificationMode.None);
bool removeHtmlComments = _settings.RemoveHtmlCommentsFromScriptsAndStyles;
bool removeCdataSections = _settings.RemoveCdataSectionsFromScriptsAndStyles;
string startPart = string.Empty;
string endPart = string.Empty;
string code;
string beforeCodeContent = string.Empty;
if (_styleBeginCdataSectionRegex.IsMatch(content))
{
beforeCodeContent = _styleBeginCdataSectionRegex.Match(content).Value;
if (!removeCdataSections)
{
startPart = "/*<![CDATA[*/";
endPart = "/*]]>*/";
}
code = _styleBeginCdataSectionRegex.Replace(content, string.Empty);
code = _styleEndCdataSectionRegex.Replace(code, string.Empty);
}
else if (_styleBeginMaxCompatibleCdataSectionRegex.IsMatch(content))
{
beforeCodeContent = _styleBeginMaxCompatibleCdataSectionRegex.Match(content).Value;
if (!removeCdataSections)
{
startPart = "<!--/*--><![CDATA[/*><!--*/";
endPart = "/*]]>*/-->";
}
code = _styleBeginMaxCompatibleCdataSectionRegex.Replace(content, string.Empty);
code = _styleEndMaxCompatibleCdataSectionRegex.Replace(code, string.Empty);
}
else if (_styleBeginHtmlCommentRegex.IsMatch(content))
{
beforeCodeContent = _styleBeginHtmlCommentRegex.Match(content).Value;
if (!removeHtmlComments)
{
startPart = "<!--";
endPart = "-->";
}
code = _styleBeginHtmlCommentRegex.Replace(content, string.Empty);
code = _styleEndHtmlCommentRegex.Replace(code, string.Empty);
}
else
{
code = content;
}
if (processedContentType == CSS_CONTENT_TYPE && _settings.MinifyEmbeddedCssCode)
{
CodeMinificationResult minificationResult = _cssMinifier.Minify(code, false);
if (minificationResult.Errors.Count == 0)
{
code = minificationResult.MinifiedContent ?? string.Empty;
}
if (minificationResult.Errors.Count > 0 || minificationResult.Warnings.Count > 0)
{
string sourceCode = context.SourceCode;
var documentNodeCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
context.NodeCoordinates, beforeCodeContent);
foreach (MinificationErrorInfo error in minificationResult.Errors)
{
var embeddedContentNodeCoordinates = new SourceCodeNodeCoordinates(error.LineNumber, error.ColumnNumber);
var absoluteNodeCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
documentNodeCoordinates, embeddedContentNodeCoordinates);
string sourceFragment = SourceCodeNavigator.GetSourceFragment(
sourceCode, absoluteNodeCoordinates);
string message = error.Message.Trim();
WriteError(LogCategoryConstants.CssMinificationError, message, _fileContext,
absoluteNodeCoordinates.LineNumber, absoluteNodeCoordinates.ColumnNumber, sourceFragment);
}
foreach (MinificationErrorInfo warning in minificationResult.Warnings)
{
var embeddedContentNodeCoordinates = new SourceCodeNodeCoordinates(warning.LineNumber, warning.ColumnNumber);
var absoluteNodeCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
documentNodeCoordinates, embeddedContentNodeCoordinates);
string sourceFragment = SourceCodeNavigator.GetSourceFragment(
sourceCode, absoluteNodeCoordinates);
string message = warning.Message.Trim();
WriteWarning(LogCategoryConstants.CssMinificationWarning, message, _fileContext,
absoluteNodeCoordinates.LineNumber, absoluteNodeCoordinates.ColumnNumber, sourceFragment);
}
}
}
if (minifyWhitespace && code.Length > 0)
{
code = code.Trim();
}
string processedStyleContent;
if (startPart.Length > 0 || endPart.Length > 0)
{
processedStyleContent = string.Concat(startPart, code, endPart);
}
else
{
processedStyleContent = code;
}
return processedStyleContent;
}
/// <summary>
/// Processes a embedded script content
/// </summary>
/// <param name="context">Markup parsing context</param>
/// <param name="content">Embedded script content</param>
/// <param name="contentType">Content type (MIME type) of the script</param>
/// <returns>Processed embedded script content</returns>
private string ProcessEmbeddedScriptContent(MarkupParsingContext context, string content, string contentType)
{
string processedScriptContent = content;
string processedContentType = (!string.IsNullOrWhiteSpace(contentType)) ?
contentType.Trim().ToLowerInvariant() : JS_CONTENT_TYPE;
bool isJavaScript = _jsContentTypes.Contains(processedContentType);
bool isVbScript = (processedContentType == VBS_CONTENT_TYPE);
bool minifyWhitespace = (_settings.WhitespaceMinificationMode != WhitespaceMinificationMode.None);
if (isJavaScript || isVbScript)
{
bool removeHtmlComments = _settings.RemoveHtmlCommentsFromScriptsAndStyles;
bool removeCdataSections = _settings.RemoveCdataSectionsFromScriptsAndStyles;
string startPart = string.Empty;
string endPart = string.Empty;
string newLine = Environment.NewLine;
string code = content;
string beforeCodeContent = string.Empty;
if (isJavaScript)
{
// Processing of JavaScript code
if (_scriptBeginCdataSectionRegex.IsMatch(content))
{
beforeCodeContent = _scriptBeginCdataSectionRegex.Match(content).Value;
if (!removeCdataSections)
{
startPart = "//<![CDATA[";
endPart = "//]]>";
}
code = _scriptBeginCdataSectionRegex.Replace(content, string.Empty);
code = _scriptEndCdataSectionRegex.Replace(code, string.Empty);
}
else if (_scriptBeginMaxCompatibleCdataSectionRegex.IsMatch(content))
{
beforeCodeContent = _scriptBeginMaxCompatibleCdataSectionRegex.Match(content).Value;
if (!removeCdataSections)
{
startPart = "<!--//--><![CDATA[//><!--";
endPart = "//--><!]]>";
}
code = _scriptBeginMaxCompatibleCdataSectionRegex.Replace(content, string.Empty);
code = _scriptEndMaxCompatibleCdataSectionRegex.Replace(code, string.Empty);
}
else if (_scriptBeginHtmlCommentRegex.IsMatch(content))
{
beforeCodeContent = _scriptBeginHtmlCommentRegex.Match(content).Value;
if (!removeHtmlComments)
{
startPart = "<!--";
endPart = "//-->";
}
code = _scriptBeginHtmlCommentRegex.Replace(content, string.Empty);
code = _scriptEndHtmlCommentRegex.Replace(code, string.Empty);
}
if (_settings.MinifyEmbeddedJsCode)
{
CodeMinificationResult minificationResult = _jsMinifier.Minify(code, false);
if (minificationResult.Errors.Count == 0)
{
code = minificationResult.MinifiedContent ?? string.Empty;
}
if (minificationResult.Errors.Count > 0 || minificationResult.Warnings.Count > 0)
{
string sourceCode = context.SourceCode;
var documentCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
context.NodeCoordinates, beforeCodeContent);
foreach (MinificationErrorInfo error in minificationResult.Errors)
{
var relativeErrorCoordinates = new SourceCodeNodeCoordinates(error.LineNumber, error.ColumnNumber);
var absoluteErrorCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
documentCoordinates, relativeErrorCoordinates);
string sourceFragment = SourceCodeNavigator.GetSourceFragment(
sourceCode, absoluteErrorCoordinates);
string message = error.Message.Trim();
WriteError(LogCategoryConstants.JsMinificationError, message, _fileContext,
absoluteErrorCoordinates.LineNumber, absoluteErrorCoordinates.ColumnNumber, sourceFragment);
}
foreach (MinificationErrorInfo warning in minificationResult.Warnings)
{
var relativeErrorCoordinates = new SourceCodeNodeCoordinates(warning.LineNumber, warning.ColumnNumber);
var absoluteErrorCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
documentCoordinates, relativeErrorCoordinates);
string sourceFragment = SourceCodeNavigator.GetSourceFragment(
sourceCode, absoluteErrorCoordinates);
string message = warning.Message.Trim();
WriteWarning(LogCategoryConstants.JsMinificationWarning, message, _fileContext,
absoluteErrorCoordinates.LineNumber, absoluteErrorCoordinates.ColumnNumber, sourceFragment);
}
}
}
}
else
{
// Processing of VBScript code
if (_scriptBeginCdataSectionRegex.IsMatch(content))
{
if (!removeCdataSections)
{
startPart = "<![CDATA[";
endPart = "]]>";
}
code = _scriptBeginCdataSectionRegex.Replace(content, string.Empty);
code = _scriptEndCdataSectionRegex.Replace(code, string.Empty);
}
else if (_scriptBeginHtmlCommentRegex.IsMatch(content))
{
if (!removeHtmlComments)
{
startPart = "<!--";
endPart = "-->";
}
code = _scriptBeginHtmlCommentRegex.Replace(content, string.Empty);
code = _scriptEndHtmlCommentRegex.Replace(code, string.Empty);
}
}
if (minifyWhitespace && code.Length > 0)
{
code = code.Trim();
}
if (startPart.Length > 0 || endPart.Length > 0)
{
processedScriptContent = string.Concat(startPart, newLine, code, newLine, endPart);
}
else
{
processedScriptContent = code;
}
}
else if (_processableScriptTypes.Contains(processedContentType))
{
// Processing of JavaScript template
GenericHtmlMinifier innerHtmlMinifier = GetInnerHtmlMinifierInstance();
MarkupMinificationResult minificationResult = innerHtmlMinifier.Minify(processedScriptContent, false);
if (minificationResult.Errors.Count == 0)
{
processedScriptContent = minificationResult.MinifiedContent ?? string.Empty;
}
if (minificationResult.Errors.Count > 0 || minificationResult.Warnings.Count > 0)
{
string sourceCode = context.SourceCode;
var documentCoordinates = context.NodeCoordinates;
foreach (MinificationErrorInfo error in minificationResult.Errors)
{
var relativeErrorCoordinates = new SourceCodeNodeCoordinates(error.LineNumber, error.ColumnNumber);
var absoluteErrorCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
documentCoordinates, relativeErrorCoordinates);
string sourceFragment = SourceCodeNavigator.GetSourceFragment(
sourceCode, absoluteErrorCoordinates);
string message = error.Message.Trim();
WriteError(LogCategoryConstants.JsTemplateMinificationError, message, _fileContext,
absoluteErrorCoordinates.LineNumber, absoluteErrorCoordinates.ColumnNumber, sourceFragment);
}
foreach (MinificationErrorInfo warning in minificationResult.Warnings)
{
var relativeErrorCoordinates = new SourceCodeNodeCoordinates(warning.LineNumber, warning.ColumnNumber);
var absoluteErrorCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
documentCoordinates, relativeErrorCoordinates);
string sourceFragment = SourceCodeNavigator.GetSourceFragment(
sourceCode, absoluteErrorCoordinates);
string message = warning.Message.Trim();
WriteWarning(LogCategoryConstants.JsTemplateMinificationWarning, message, _fileContext,
absoluteErrorCoordinates.LineNumber, absoluteErrorCoordinates.ColumnNumber, sourceFragment);
}
}
if (minifyWhitespace && processedScriptContent.Length > 0)
{
processedScriptContent = processedScriptContent.Trim();
}
}
return processedScriptContent;
}
/// <summary>
/// Minify a Knockout binding expression
/// </summary>
/// <param name="context">Markup parsing context</param>
/// <param name="attributeCoordinates">Coordinates of attribute value</param>
/// <param name="expressionCoordinates">Coordinates of expression</param>
/// <param name="expression">Binding expression</param>
/// <returns>Minified binding expression</returns>
private string MinifyKnockoutBindingExpression(MarkupParsingContext context,
SourceCodeNodeCoordinates attributeCoordinates, SourceCodeNodeCoordinates expressionCoordinates,
string expression)
{
if (string.IsNullOrWhiteSpace(expression))
{
return string.Empty;
}
string result = expression;
CrockfordJsMinifier innerCrockfordJsMinifier = GetInnerCrockfordJsMinifierInstance();
CodeMinificationResult minificationResult = innerCrockfordJsMinifier.Minify(
JsonHelpers.WrapStringInCurlyBraces(result), true);
IList<MinificationErrorInfo> errors = minificationResult.Errors;
if (errors.Count == 0)
{
result = minificationResult.MinifiedContent ?? string.Empty;
}
else
{
SourceCodeNodeCoordinates absoluteErrorCoordinates = CalculateAbsoluteInlineCodeErrorCoordinates(
context.NodeCoordinates, attributeCoordinates, expressionCoordinates);
string sourceFragment = SourceCodeNavigator.GetSourceFragment(
context.SourceCode, absoluteErrorCoordinates);
string errorMessage = errors[0].Message;
WriteError(LogCategoryConstants.JsTemplateMinificationError,
string.Format(Strings.ErrorMessage_BindingExpressionMinificationFailed,
"Knockout", errorMessage.TrimEnd('.')),
_fileContext,
absoluteErrorCoordinates.LineNumber, absoluteErrorCoordinates.ColumnNumber,
sourceFragment);
}
result = JsonHelpers.UnwrapStringInCurlyBraces(result);
return result;
}
/// <summary>
/// Initializes a new instance of the WebMarkupMin.Core.CodeProcessingException class
/// with a specified error message, node coordinates and source fragment
/// </summary>
/// <param name="message">Error message that explains the reason for the exception</param>
/// <param name="nodeCoordinates">Node coordinates</param>
/// <param name="sourceFragment">Source fragment</param>
protected CodeProcessingException(string message, SourceCodeNodeCoordinates nodeCoordinates, string sourceFragment)
: this(message, nodeCoordinates, sourceFragment, null)
{
}
/// <summary>
/// Calculates a absolute node coordinates
/// </summary>
/// <param name="baseNodeCoordinates">Base node coordinates</param>
/// <param name="lineBreakCount">Number of line breaks</param>
/// <param name="charRemainderCount">Number of characters left</param>
/// <returns>Absolute node coordinates</returns>
public static SourceCodeNodeCoordinates CalculateAbsoluteNodeCoordinates(
SourceCodeNodeCoordinates baseNodeCoordinates, int lineBreakCount, int charRemainderCount)
{
int absoluteLineNumber;
int absoluteColumnNumber;
if (!baseNodeCoordinates.IsEmpty)
{
int baseLineNumber = baseNodeCoordinates.LineNumber;
int baseColumnNumber = baseNodeCoordinates.ColumnNumber;
if (lineBreakCount > 0)
{
absoluteLineNumber = baseLineNumber + lineBreakCount;
absoluteColumnNumber = charRemainderCount + 1;
}
else
{
absoluteLineNumber = baseLineNumber;
absoluteColumnNumber = baseColumnNumber + charRemainderCount;
}
}
else
{
absoluteLineNumber = lineBreakCount + 1;
absoluteColumnNumber = charRemainderCount + 1;
}
var absoluteNodeCoordinates = new SourceCodeNodeCoordinates(absoluteLineNumber, absoluteColumnNumber);
return absoluteNodeCoordinates;
}
private static SourceCodeNodeCoordinates CalculateAbsoluteInlineCodeErrorCoordinates(
SourceCodeNodeCoordinates tagCoordinates, SourceCodeNodeCoordinates attributeCoordinates,
SourceCodeNodeCoordinates relativeErrorCoordinates)
{
SourceCodeNodeCoordinates absoluteErrorCoordinates;
if (!attributeCoordinates.IsEmpty)
{
absoluteErrorCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
attributeCoordinates, relativeErrorCoordinates);
}
else
{
absoluteErrorCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
tagCoordinates, relativeErrorCoordinates);
}
return absoluteErrorCoordinates;
}
/// <summary>
/// Parses a start tag
/// </summary>
/// <param name="tagName">Tag name</param>
/// <param name="tagNameInLowercase">Tag name in lowercase</param>
/// <param name="attributesString">String representation of the attribute list</param>
/// <param name="attributesCoordinates">Attributes coordinates</param>
/// <param name="isEmptyTag">Flag that tag is empty</param>
private void ParseStartTag(string tagName, string tagNameInLowercase, string attributesString,
SourceCodeNodeCoordinates attributesCoordinates, bool isEmptyTag)
{
HtmlTagFlags tagFlags = GetTagFlagsByName(tagNameInLowercase);
if (tagFlags.HasFlag(HtmlTagFlags.Optional))
{
HtmlTag lastStackedTag = _tagStack.LastOrDefault();
if (lastStackedTag != null && lastStackedTag.NameInLowercase == tagNameInLowercase)
{
ParseEndTag(lastStackedTag.Name, lastStackedTag.NameInLowercase);
}
else
{
if (tagNameInLowercase == "body" && _tagStack.Any(t => t.NameInLowercase == "head"))
{
HtmlTag headTag = _tagStack.Single(t => t.NameInLowercase == "head");
ParseEndTag(headTag.Name, headTag.NameInLowercase);
}
}
}
if (tagFlags.HasFlag(HtmlTagFlags.Empty))
{
isEmptyTag = true;
}
else if (isEmptyTag)
{
tagFlags |= HtmlTagFlags.Empty;
}
var attributes = ParseAttributes(tagName, tagNameInLowercase, tagFlags,
attributesString, attributesCoordinates);
var tag = new HtmlTag(tagName, tagNameInLowercase, attributes, tagFlags);
if (!isEmptyTag)
{
if (_conditionalCommentOpened)
{
HtmlConditionalComment lastConditionalComment = _conditionalCommentStack.Peek();
HtmlConditionalCommentType lastConditionalCommentType = lastConditionalComment.Type;
if (tagFlags.HasFlag(HtmlTagFlags.EmbeddedCode)
|| lastConditionalCommentType == HtmlConditionalCommentType.RevealedValidating
|| lastConditionalCommentType == HtmlConditionalCommentType.RevealedValidatingSimplified)
{
_tagStack.Add(tag);
}
}
else
{
_tagStack.Add(tag);
}
}
if (_handlers.StartTag != null)
{
_handlers.StartTag(_context, tag);
}
if (tagFlags.HasFlag(HtmlTagFlags.Xml) && !tagFlags.HasFlag(HtmlTagFlags.NonIndependent))
{
_xmlTagStack.Push(tagNameInLowercase);
}
}
/// <summary>
/// Constructs instance of inner markup parsing context
/// </summary>
/// <param name="sourceCode">Source code</param>
public InnerMarkupParsingContext(string sourceCode)
{
_sourceCode = sourceCode;
_position = 0;
_nodeCoordinates = new SourceCodeNodeCoordinates(1, 1);
}
/// <summary>
/// Formats a line of source code
/// </summary>
/// <param name="line">Line content</param>
/// <param name="nodeCoordinates">Node coordinates</param>
/// <param name="lineNumberSize">Number of symbols in the line number caption</param>
/// <param name="fragmentStartPosition">Start position of source fragment</param>
/// <param name="fragmentLength">Length of source fragment</param>
/// <param name="tabSize">Number of spaces in the tab</param>
/// <returns>Formatted line</returns>
private static string FormatSourceCodeLine(string line, SourceCodeNodeCoordinates nodeCoordinates,
int lineNumberSize, int fragmentStartPosition = 0, int fragmentLength = 0, byte tabSize = 4)
{
const string ellipsisSymbol = "…";
const byte leftPaddingSize = 7;
int lineNumber = nodeCoordinates.LineNumber;
int columnNumber = nodeCoordinates.ColumnNumber;
int lineLength = line.Length;
string processedLine;
if ((fragmentStartPosition == 0 && fragmentLength == lineLength))
{
processedLine = line;
}
else if (fragmentStartPosition >= lineLength)
{
processedLine = string.Empty;
}
else
{
int fragmentEndPosition = fragmentStartPosition + fragmentLength - 1;
bool beginningCutOff = (fragmentStartPosition > 0);
bool endingCutOff = (fragmentEndPosition <= lineLength);
if (fragmentEndPosition + 1 == lineLength)
{
endingCutOff = false;
}
if (fragmentEndPosition >= lineLength)
{
endingCutOff = false;
fragmentEndPosition = lineLength - 1;
fragmentLength = fragmentEndPosition - fragmentStartPosition + 1;
}
processedLine = line.Substring(fragmentStartPosition, fragmentLength);
if (beginningCutOff)
{
processedLine = ellipsisSymbol + processedLine;
}
if (endingCutOff)
{
processedLine = processedLine + ellipsisSymbol;
}
}
string result = string.Format("Line {0}: {1}",
lineNumber.ToString(CultureInfo.InvariantCulture).PadLeft(lineNumberSize),
processedLine.TabsToSpaces(tabSize));
if (columnNumber > 0)
{
int cursorOffset = columnNumber - fragmentStartPosition;
if (fragmentStartPosition > 0)
{
cursorOffset++;
}
result += Environment.NewLine + string.Empty
.PadRight(processedLine.Substring(0, cursorOffset - 1)
.TabsToSpaces(tabSize).Length + lineNumberSize + leftPaddingSize)
.Replace(" ", "-") + "^"
;
}
return result;
}
/// <summary>
/// Constructs instance of stacked XML tag
/// </summary>
/// <param name="name">Name</param>
/// <param name="coordinates">Coordinates of tag</param>
public StackedXmlTag(string name, SourceCodeNodeCoordinates coordinates)
{
Name = name;
Coordinates = coordinates;
}
/// <summary>
/// Parses a attributes
/// </summary>
/// <param name="tagName">Tag name</param>
/// <param name="tagNameInLowercase">Tag name in lowercase</param>
/// <param name="tagFlags">Tag flags</param>
/// <param name="attributesString">String representation of the attribute list</param>
/// <param name="attributesCoordinates">Attributes coordinates</param>
/// <returns>List of attributes</returns>
private IList<HtmlAttribute> ParseAttributes(string tagName, string tagNameInLowercase, HtmlTagFlags tagFlags,
string attributesString, SourceCodeNodeCoordinates attributesCoordinates)
{
var attributes = new List<HtmlAttribute>();
if (string.IsNullOrWhiteSpace(attributesString))
{
return attributes;
}
SourceCodeNodeCoordinates currentAttributesCoordinates = attributesCoordinates;
int currentPosition = 0;
MatchCollection attributeMatches = _attributeRegex.Matches(attributesString);
foreach (Match attributeMatch in attributeMatches)
{
GroupCollection groups = attributeMatch.Groups;
Group attributeNameGroup = groups["attributeName"];
Group attributeEqualSignGroup = groups["attributeEqualSign"];
Group attributeValueGroup = groups["attributeValue"];
string attributeName = attributeNameGroup.Value;
string attributeNameInLowercase = attributeName;
if (Utils.ContainsUppercaseCharacters(attributeName))
{
attributeNameInLowercase = attributeName.ToLowerInvariant();
}
string attributeValue = null;
if (attributeEqualSignGroup.Success)
{
if (attributeValueGroup.Success)
{
attributeValue = attributeValueGroup.Value;
if (!string.IsNullOrWhiteSpace(attributeValue))
{
attributeValue = HtmlAttribute.HtmlAttributeDecode(attributeValue);
}
}
else
{
attributeValue = string.Empty;
}
}
var attributeNameCoordinates = SourceCodeNodeCoordinates.Empty;
int attributeNamePosition = -1;
if (attributeNameGroup.Success)
{
attributeNamePosition = attributeNameGroup.Index;
}
if (attributeNamePosition != -1)
{
int lineBreakCount;
int charRemainderCount;
SourceCodeNavigator.CalculateLineBreakCount(attributesString, currentPosition,
attributeNamePosition - currentPosition, out lineBreakCount, out charRemainderCount);
attributeNameCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
currentAttributesCoordinates, lineBreakCount, charRemainderCount);
currentAttributesCoordinates = attributeNameCoordinates;
currentPosition = attributeNamePosition;
}
var attributeValueCoordinates = SourceCodeNodeCoordinates.Empty;
int attributeValuePosition = -1;
if (attributeValueGroup.Success)
{
attributeValuePosition = attributeValueGroup.Index;
}
if (attributeValuePosition != -1)
{
int lineBreakCount;
int charRemainderCount;
SourceCodeNavigator.CalculateLineBreakCount(attributesString, currentPosition,
attributeValuePosition - currentPosition, out lineBreakCount, out charRemainderCount);
attributeValueCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
currentAttributesCoordinates, lineBreakCount, charRemainderCount);
currentAttributesCoordinates = attributeValueCoordinates;
currentPosition = attributeValuePosition;
}
HtmlAttributeType attributeType = GetAttributeType(tagNameInLowercase, tagFlags,
attributeNameInLowercase, attributes);
attributes.Add(new HtmlAttribute(attributeName, attributeNameInLowercase, attributeValue,
attributeType, attributeNameCoordinates, attributeValueCoordinates));
}
return attributes;
}
/// <summary>
/// Minify a Angular binding expression
/// </summary>
/// <param name="context">Markup parsing context</param>
/// <param name="attributeCoordinates">Coordinates of attribute value</param>
/// <param name="expression">Binding expression</param>
/// <returns>Minified binding expression</returns>
private string MinifyAngularBindingExpression(MarkupParsingContext context,
SourceCodeNodeCoordinates attributeCoordinates, string expression)
{
return MinifyAngularBindingExpression(context, attributeCoordinates, SourceCodeNodeCoordinates.Empty,
expression);
}
/// <summary>
/// Increases a current parsing position
/// </summary>
/// <param name="increment">Increment</param>
public void IncreasePosition(int increment)
{
int oldPosition = _position;
int newPosition = oldPosition + increment;
int fragmentStartPosition = oldPosition;
int fragmentLength = increment;
int lineBreakCount;
int charRemainderCount;
SourceCodeNavigator.CalculateLineBreakCount(_sourceCode, fragmentStartPosition, fragmentLength,
out lineBreakCount, out charRemainderCount);
SourceCodeNodeCoordinates currentNodeCoordinates = _nodeCoordinates;
_nodeCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(currentNodeCoordinates,
lineBreakCount, charRemainderCount);
_position = newPosition;
}
/// <summary>
/// Gets a source fragment
/// </summary>
/// <param name="sourceCode">Source code</param>
/// <param name="nodeCoordinates">Node coordinates</param>
/// <param name="tabSize">Number of spaces in the tab</param>
/// <param name="maxFragmentLength">Maximum length of the source fragment</param>
/// <returns>Source fragment</returns>
public static string GetSourceFragment(string sourceCode,
SourceCodeNodeCoordinates nodeCoordinates, byte tabSize = DEFAULT_TAB_SIZE,
int maxFragmentLength = DEFAULT_MAX_FRAGMENT_LENGTH)
{
string sourceFragment = string.Empty;
int lineNumber = nodeCoordinates.LineNumber;
int columnNumber = nodeCoordinates.ColumnNumber;
if (!string.IsNullOrEmpty(sourceCode))
{
int previousLineNumber = lineNumber - 1;
int currentLineNumber = lineNumber;
int nextLineNumber = lineNumber + 1;
string previousLine = string.Empty;
string currentLine = string.Empty;
string nextLine = string.Empty;
int lineCount = 0;
int lineBreakPosition = int.MinValue;
int lineBreakLength = 0;
do
{
string line;
int startLinePosition = (lineBreakPosition == int.MinValue) ? 0 : lineBreakPosition + lineBreakLength;
FindNextLineBreak(sourceCode, startLinePosition, out lineBreakPosition, out lineBreakLength);
if (lineBreakPosition != -1)
{
line = sourceCode.Substring(startLinePosition, lineBreakPosition - startLinePosition);
}
else
{
line = sourceCode.Substring(startLinePosition);
}
lineCount++;
if (lineCount == previousLineNumber)
{
previousLine = line;
}
else if (lineCount == currentLineNumber)
{
currentLine = line;
}
else if (lineCount == nextLineNumber)
{
nextLine = line;
}
}while (lineBreakPosition != -1 && lineCount <= nextLineNumber);
int lineNumberSize = (nextLineNumber).ToString(CultureInfo.InvariantCulture).Length;
if (currentLineNumber == lineCount)
{
lineNumberSize = currentLineNumber.ToString(CultureInfo.InvariantCulture).Length;
}
int fragmentStartPosition;
int fragmentLength;
CalculateCutPositions(currentLine, columnNumber, maxFragmentLength,
out fragmentStartPosition, out fragmentLength);
var sourceFragmentBuilder = new StringBuilder();
if (currentLine.Length > 0)
{
if (previousLine.Length > 0)
{
sourceFragmentBuilder.AppendLine(FormatSourceCodeLine(previousLine,
new SourceCodeNodeCoordinates(previousLineNumber, 0),
lineNumberSize, fragmentStartPosition, fragmentLength, tabSize));
}
sourceFragmentBuilder.AppendLine(FormatSourceCodeLine(currentLine,
new SourceCodeNodeCoordinates(currentLineNumber, columnNumber),
lineNumberSize, fragmentStartPosition, fragmentLength, tabSize));
if (nextLine.Length > 0)
{
sourceFragmentBuilder.AppendLine(FormatSourceCodeLine(nextLine,
new SourceCodeNodeCoordinates(nextLineNumber, 0),
lineNumberSize, fragmentStartPosition, fragmentLength, tabSize));
}
}
sourceFragment = sourceFragmentBuilder.ToString();
}
return(sourceFragment);
}
/// <summary>
/// Initializes a new instance of the <see cref="MarkupParsingException"/> class
/// with a specified error message, node coordinates and source fragment
/// </summary>
/// <param name="message">Error message that explains the reason for the exception</param>
/// <param name="nodeCoordinates">Node coordinates</param>
/// <param name="sourceFragment">Source fragment</param>
public MarkupParsingException(string message, SourceCodeNodeCoordinates nodeCoordinates, string sourceFragment)
: base(message, nodeCoordinates, sourceFragment)
{ }
/// <summary>
/// Formats a line of source code
/// </summary>
/// <param name="line">Line content</param>
/// <param name="nodeCoordinates">Node coordinates</param>
/// <param name="lineNumberSize">Number of symbols in the line number caption</param>
/// <param name="fragmentStartPosition">Start position of source fragment</param>
/// <param name="fragmentLength">Length of source fragment</param>
/// <param name="tabSize">Number of spaces in the tab</param>
/// <returns>Formatted line</returns>
private static string FormatSourceCodeLine(string line, SourceCodeNodeCoordinates nodeCoordinates,
int lineNumberSize, int fragmentStartPosition = 0, int fragmentLength = 0, byte tabSize = 4)
{
const string ellipsisSymbol = "…";
const byte leftPaddingSize = 7;
int lineNumber = nodeCoordinates.LineNumber;
int columnNumber = nodeCoordinates.ColumnNumber;
int lineLength = line.Length;
string processedLine;
if ((fragmentStartPosition == 0 && fragmentLength == lineLength))
{
processedLine = line;
}
else if (fragmentStartPosition >= lineLength)
{
processedLine = string.Empty;
}
else
{
int fragmentEndPosition = fragmentStartPosition + fragmentLength - 1;
bool beginningCutOff = (fragmentStartPosition > 0);
bool endingCutOff = (fragmentEndPosition <= lineLength);
if (fragmentEndPosition + 1 == lineLength)
{
endingCutOff = false;
}
if (fragmentEndPosition >= lineLength)
{
endingCutOff = false;
fragmentEndPosition = lineLength - 1;
fragmentLength = fragmentEndPosition - fragmentStartPosition + 1;
}
processedLine = line.Substring(fragmentStartPosition, fragmentLength);
if (beginningCutOff)
{
processedLine = ellipsisSymbol + processedLine;
}
if (endingCutOff)
{
processedLine = processedLine + ellipsisSymbol;
}
}
string result = string.Format("Line {0}: {1}",
lineNumber.ToString(CultureInfo.InvariantCulture).PadLeft(lineNumberSize),
processedLine.TabsToSpaces(tabSize));
if (columnNumber > 0)
{
int cursorOffset = columnNumber - fragmentStartPosition;
if (fragmentStartPosition > 0)
{
cursorOffset++;
}
result += Environment.NewLine + string.Empty
.PadRight(processedLine.Substring(0, cursorOffset - 1)
.TabsToSpaces(tabSize).Length + lineNumberSize + leftPaddingSize)
.Replace(" ", "-") + "^"
;
}
return(result);
}
/// <summary>
/// Initializes a new instance of the WebMarkupMin.Core.Parsers.XmlParsingException class
/// with a specified error message, node coordinates, source fragment
/// and reference to the inner exception that is the cause of this exception
/// </summary>
/// <param name="message">Error message that explains the reason for the exception</param>
/// <param name="nodeCoordinates">Node coordinates</param>
/// <param name="sourceFragment">Source fragment</param>
/// <param name="innerException">Exception that is the cause of the current exception</param>
public XmlParsingException(string message, SourceCodeNodeCoordinates nodeCoordinates,
string sourceFragment, Exception innerException)
: base(message, nodeCoordinates, sourceFragment, innerException)
{
}
/// <summary>
/// Processes a embedded style content
/// </summary>
/// <param name="context">Markup parsing context</param>
/// <param name="content">Embedded style content</param>
/// <param name="contentType">Content type (MIME type) of the style</param>
private void ProcessEmbeddedStyleContent(MarkupParsingContext context, string content, string contentType)
{
string code;
bool isNotEmpty = false;
string processedContentType = !string.IsNullOrWhiteSpace(contentType) ?
contentType.Trim().ToLowerInvariant() : CSS_CONTENT_TYPE;
bool minifyWhitespace = _settings.WhitespaceMinificationMode != WhitespaceMinificationMode.None;
bool removeHtmlComments = _settings.RemoveHtmlCommentsFromScriptsAndStyles;
bool removeCdataSections = _settings.RemoveCdataSectionsFromScriptsAndStyles;
string startPart = string.Empty;
string endPart = string.Empty;
string newLine = string.Empty;
string beforeCodeContent = string.Empty;
if (_beginCdataSectionRegex.IsMatch(content))
{
beforeCodeContent = _beginCdataSectionRegex.Match(content).Value;
startPart = "<![CDATA[";
endPart = "]]>";
newLine = Environment.NewLine;
code = Utils.RemovePrefixAndPostfix(content, _beginCdataSectionRegex, _endCdataSectionRegex);
}
else if (_styleBeginCdataSectionRegex.IsMatch(content))
{
beforeCodeContent = _styleBeginCdataSectionRegex.Match(content).Value;
if (!removeCdataSections)
{
startPart = "/*<![CDATA[*/";
endPart = "/*]]>*/";
}
code = Utils.RemovePrefixAndPostfix(content, _styleBeginCdataSectionRegex, _styleEndCdataSectionRegex);
}
else if (_styleBeginMaxCompatibleCdataSectionRegex.IsMatch(content))
{
beforeCodeContent = _styleBeginMaxCompatibleCdataSectionRegex.Match(content).Value;
if (!removeCdataSections)
{
startPart = "<!--/*--><![CDATA[/*><!--*/";
endPart = "/*]]>*/-->";
}
code = Utils.RemovePrefixAndPostfix(content, _styleBeginMaxCompatibleCdataSectionRegex,
_styleEndMaxCompatibleCdataSectionRegex);
}
else if (_beginHtmlCommentRegex.IsMatch(content))
{
beforeCodeContent = _beginHtmlCommentRegex.Match(content).Value;
if (!removeHtmlComments)
{
startPart = "<!--";
endPart = "-->";
}
code = Utils.RemovePrefixAndPostfix(content, _beginHtmlCommentRegex, _endHtmlCommentRegex);
}
else
{
code = content;
}
if (processedContentType == CSS_CONTENT_TYPE && _settings.MinifyEmbeddedCssCode)
{
CodeMinificationResult minificationResult = _cssMinifier.Minify(code, false);
if (minificationResult.Errors.Count == 0)
{
code = minificationResult.MinifiedContent ?? string.Empty;
}
if (minificationResult.Errors.Count > 0 || minificationResult.Warnings.Count > 0)
{
string sourceCode = context.SourceCode;
var documentNodeCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
context.NodeCoordinates, beforeCodeContent);
foreach (MinificationErrorInfo error in minificationResult.Errors)
{
var embeddedContentNodeCoordinates = new SourceCodeNodeCoordinates(error.LineNumber, error.ColumnNumber);
var absoluteNodeCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
documentNodeCoordinates, embeddedContentNodeCoordinates);
string sourceFragment = SourceCodeNavigator.GetSourceFragment(
sourceCode, absoluteNodeCoordinates);
string message = error.Message.Trim();
WriteError(LogCategoryConstants.CssMinificationError, message, _fileContext,
absoluteNodeCoordinates.LineNumber, absoluteNodeCoordinates.ColumnNumber, sourceFragment);
}
foreach (MinificationErrorInfo warning in minificationResult.Warnings)
{
var embeddedContentNodeCoordinates = new SourceCodeNodeCoordinates(warning.LineNumber, warning.ColumnNumber);
var absoluteNodeCoordinates = SourceCodeNavigator.CalculateAbsoluteNodeCoordinates(
documentNodeCoordinates, embeddedContentNodeCoordinates);
string sourceFragment = SourceCodeNavigator.GetSourceFragment(
sourceCode, absoluteNodeCoordinates);
string message = warning.Message.Trim();
WriteWarning(LogCategoryConstants.CssMinificationWarning, message, _fileContext,
absoluteNodeCoordinates.LineNumber, absoluteNodeCoordinates.ColumnNumber, sourceFragment);
}
}
}
if (minifyWhitespace && code.Length > 0)
{
code = code.Trim();
}
if (startPart.Length > 0)
{
_buffer.Add(startPart);
if (newLine.Length > 0)
{
_buffer.Add(newLine);
}
isNotEmpty = true;
}
if (code.Length > 0)
{
_buffer.Add(code);
isNotEmpty = true;
}
if (endPart.Length > 0)
{
if (newLine.Length > 0)
{
_buffer.Add(newLine);
}
_buffer.Add(endPart);
isNotEmpty = true;
}
_currentText = isNotEmpty ? EMBEDDED_CODE_PLACEHOLDER : string.Empty;
}