protected override void GenerateStyleSheet(OutputGroup outputGroup, IList <InputGroup> inputGroups, UglifyCommandParser uglifyCommandParser, string outputPath, Encoding outputEncoding)
{
if (!FileWriteOperation(outputPath, uglifyCommandParser.IfNotNull(p => p.Clobber), () =>
{
// create the output file, clobbering any existing content
using (var writer = new StreamWriter(outputPath, false, outputEncoding))
{
if (inputGroups != null && inputGroups.Count > 0)
{
// for each input file, copy to the output, separating them with a newline (don't need a semicolon like JavaScript does)
var addSeparator = false;
foreach (var inputGroup in inputGroups)
{
if (addSeparator)
{
writer.WriteLine();
}
else
{
addSeparator = true;
}
writer.Write(inputGroup.Source);
}
}
}
return(true);
}))
{
// could not write file
Log.LogError(Strings.CouldNotWriteOutputFile, outputPath);
}
}
protected override void GenerateJavaScript(OutputGroup outputGroup, IList <InputGroup> inputGroups, UglifyCommandParser uglifyCommandParser, string outputPath, Encoding outputEncoding)
{
if (uglifyCommandParser == null)
{
throw new ArgumentNullException("uglifyCommandParser");
}
try
{
var settings = uglifyCommandParser.JSSettings;
// process the resources for this output group into the settings list
// if there are any to be processed
if (outputGroup != null && settings != null &&
outputGroup.Resources.IfNotNull(rs => rs.Count > 0))
{
outputGroup.ProcessResourceStrings(settings.ResourceStrings, null);
}
// then process the javascript output group
ProcessJavaScript(
inputGroups,
uglifyCommandParser,
outputPath,
outputGroup.IfNotNull(og => og.SymbolMap),
outputEncoding);
}
catch (ArgumentException ex)
{
// processing the resource strings could throw this exception
Log.LogError(ex.Message);
}
}
/// <summary>
/// Process an output group by deleting the output files if they exist.
/// </summary>
/// <param name="outputGroup">the OutputGroup being processed</param>
/// <param name="outputFileInfo">FileInfo for the desired output file</param>
/// <param name="symbolsFileInfo">FileInfo for the optional desired symbol file</param>
/// <param name="defaultSettings">default settings for this output group</param>
/// <param name="manifestModifiedTime">modified time for the manifest</param>
protected override void ProcessOutputGroup(OutputGroup outputGroup, FileInfo outputFileInfo, FileInfo symbolsFileInfo, UglifyCommandParser defaultSettings, DateTime manifestModifiedTime)
{
// get the settings to use -- take the configuration for this output group
// and apply them over the default settings
var settings = ParseConfigSettings(outputGroup.GetConfigArguments(this.Configuration), defaultSettings);
// we really only care about the clobber setting -- if the file is read-only, don't bother deleting it
// unless we have the clobber setting. If the current setting is Preserve, then we want to change it to
// Auto because it makes no sense to not delete a non-readonly file during a "clean"
var clobber = settings.Clobber == ExistingFileTreatment.Preserve
? ExistingFileTreatment.Auto
: settings.Clobber;
// we don't care about the inputs, we just want to delete the outputs and be done
if (outputFileInfo != null)
{
if (!FileWriteOperation(outputFileInfo.FullName, clobber, () =>
{
outputFileInfo.IfNotNull(fi =>
{
if (fi.Exists)
{
Log.LogMessage(MessageImportance.Normal, Strings.DeletingFile, fi.FullName);
fi.Delete();
}
});
return(true);
}))
{
// can't delete the file - not an error; just informational
Log.LogMessage(MessageImportance.Normal, Strings.CouldNotDeleteOutputFile, outputFileInfo.FullName);
}
}
if (symbolsFileInfo != null)
{
if (!FileWriteOperation(symbolsFileInfo.FullName, clobber, () =>
{
symbolsFileInfo.IfNotNull(fi =>
{
if (fi.Exists)
{
Log.LogMessage(MessageImportance.Normal, Strings.DeletingFile, fi.FullName);
fi.Delete();
}
});
return(true);
}))
{
// can't delete the file - not an error; just informational
Log.LogMessage(MessageImportance.Normal, Strings.CouldNotDeleteOutputFile, symbolsFileInfo.FullName);
}
}
}
protected override void GenerateStyleSheet(OutputGroup outputGroup, IList <InputGroup> inputGroups, UglifyCommandParser uglifyCommandParser, string outputPath, Encoding outputEncoding)
{
if (uglifyCommandParser == null)
{
throw new ArgumentNullException("uglifyCommandParser");
}
ProcessStylesheet(
inputGroups,
uglifyCommandParser,
outputPath,
outputEncoding);
}
/// <summary>
/// Get an encoding to use for the given input file
/// </summary>
/// <param name="outputGroup">output file</param>
/// <param name="defaultEncodingName">default encoding name to use if none specified</param>
/// <returns>encoding; UTF8 WITHOUT THE BOM is the default if nothing else specified</returns>
public static Encoding GetEncoding(this OutputGroup outputGroup, string defaultEncodingName)
{
Encoding encoding = null;
if (outputGroup != null)
{
// if none specified on the output group, use the default
var encodingName = outputGroup.EncodingName.IfNullOrWhiteSpace(defaultEncodingName);
if (!encodingName.IsNullOrWhiteSpace())
{
try
{
// try to create an encoding from the encoding name
// using special encoder fallback determined earlier, or a default
// encoder fallback that uses the UNICODE "replace character" for
// things it doesn't understand, and a decoder replacement fallback
// that also uses the UNICODE "replacement character" for things it doesn't understand.
encoding = Encoding.GetEncoding(
encodingName,
GetEncoderFallback(outputGroup.CodeType),
new DecoderReplacementFallback("\uFFFD"));
}
catch (ArgumentException e)
{
// eat the exception and just go with UTF-8
System.Diagnostics.Debug.WriteLine(e.ToString());
}
}
}
// the default output is UTF-8 WITHOUT the BOM if we are outputting to a file,
// or ASCII if we are outputting to STDOUT
if (encoding == null)
{
if (outputGroup == null || outputGroup.Path.IsNullOrWhiteSpace())
{
// no output group or outputting to stdout (no output path)
encoding = (Encoding)Encoding.ASCII.Clone();
encoding.EncoderFallback = GetEncoderFallback(outputGroup.IfNotNull(g => g.CodeType));
}
else
{
// outputting to file, use UTF-8 WITHOUT the BOM.
// don't need a fallback encoder for UTF-8.
encoding = new UTF8Encoding(false);
}
}
return(encoding);
}
/// <summary>
/// Create ResourceString objects from all the input resources for an output group and add them to a list
/// </summary>
/// <param name="outputGroup">output group</param>
/// <param name="resourceStringList">resource strings list</param>
/// <param name="defaultResourceObjectName">optional default resource object name</param>
public static void ProcessResourceStrings(this OutputGroup outputGroup, IList <ResourceStrings> resourceStringList, string defaultResourceObjectName)
{
if (outputGroup != null && resourceStringList != null)
{
foreach (var resource in outputGroup.Resources)
{
// create the resource strings object from the resources file.
var resourceStrings = ProcessResourceFile(resource.Path);
// if there is no name specified in the resource element, use the default.
resourceStrings.Name = resource.Name.IfNullOrWhiteSpace(defaultResourceObjectName);
// add it to the given list.
resourceStringList.Add(resourceStrings);
}
}
}
/// <summary>
/// Process an output group. Override this method if the task doesn't want to check the input file times against
/// the output file times (or existence) and call the GenerateOutput methods.
/// </summary>
/// <param name="outputGroup">the OutputGroup being processed</param>
/// <param name="outputFileInfo">FileInfo for the desired output file</param>
/// <param name="symbolsFileInfo">FileInfo for the optional desired symbol file</param>
/// <param name="defaultSettings">default settings for this output group</param>
/// <param name="manifestModifiedTime">modified time for the manifest</param>
protected virtual void ProcessOutputGroup(OutputGroup outputGroup, FileInfo outputFileInfo, FileInfo symbolsFileInfo, UglifyCommandParser defaultSettings, DateTime manifestModifiedTime)
{
// check the file times -- if any of the inputs are newer than any output (or if any outputs don't exist),
// then generate the output files
if (AnyInputsAreNewerThanOutputs(outputGroup, outputFileInfo, symbolsFileInfo, manifestModifiedTime))
{
// get the settings to use -- take the configuration for this output group
// and apply them over the default settings
var settings = ParseConfigSettings(outputGroup.GetConfigArguments(this.Configuration), defaultSettings);
GenerateOutputFiles(outputGroup, outputFileInfo, settings);
}
else
{
// none of the inputs are newer than the output -- we're good.
Log.LogMessage(Strings.SkippedOutputFile, outputFileInfo.IfNotNull(fi => fi.Name) ?? string.Empty);
}
}
void GenerateOutputFiles(OutputGroup outputGroup, FileInfo outputFileInfo, UglifyCommandParser uglifyCommandParser)
{
// create combined input source
var inputGroups = outputGroup.ReadInputGroups(uglifyCommandParser.EncodingInputName);
if (inputGroups.Count > 0)
{
switch (outputGroup.CodeType)
{
case CodeType.JavaScript:
// call the virtual function to generate the JavaScript output file from the inputs
GenerateJavaScript(outputGroup, inputGroups, uglifyCommandParser, outputFileInfo.FullName, outputGroup.GetEncoding(uglifyCommandParser.EncodingOutputName));
break;
case CodeType.StyleSheet:
// call the virtual function to generate the stylesheet output file from the inputs
GenerateStyleSheet(outputGroup, inputGroups, uglifyCommandParser, outputFileInfo.FullName, outputGroup.GetEncoding(uglifyCommandParser.EncodingOutputName));
break;
case CodeType.Unknown:
Log.LogError(Strings.UnknownCodeType);
break;
}
}
else
{
// no input! write an empty output file
if (!FileWriteOperation(outputFileInfo.FullName, uglifyCommandParser.Clobber, () =>
{
using (var stream = outputFileInfo.Create())
{
// write nothing; just create the empty file
return(true);
}
}))
{
// could not write file
Log.LogError(Strings.CouldNotWriteOutputFile, outputFileInfo.FullName);
}
}
}
protected override void GenerateStyleSheet(OutputGroup outputGroup, IList <InputGroup> inputGroups, UglifyCommandParser uglifyCommandParser, string outputPath, Encoding outputEncoding)
{
// shouldn't get called because we override the ProcessOutputGroup method
throw new NotImplementedException();
}
/// <summary>
/// Check the file times of the input files and the output files. If the output files don't exist, or if any of the input files are
/// newer than the already-existing output files, generate the output files again by calling the virtual method GenerateOutputFiles.
/// </summary>
/// <param name="outputGroup">the OutputGroup being processed</param>
/// <param name="outputFileInfo">FileInfo for the desired output file</param>
/// <param name="symbolsFileInfo">FileInfo for the optional desired symbol file</param>
/// <param name="manifestModifiedTime">modified time for the manifest</param>
bool AnyInputsAreNewerThanOutputs(OutputGroup outputGroup, FileInfo outputFileInfo, FileInfo symbolsFileInfo, DateTime manifestModifiedTime)
{
// build the output files
var processGroup = false;
var codeType = outputGroup.CodeType;
if (!outputFileInfo.Exists ||
(!IgnoreSourceMapOutput && symbolsFileInfo != null && !symbolsFileInfo.Exists))
{
// one or more outputs don't exist, so we need to process this group
processGroup = true;
}
else
{
// output exists. we need to check to see if it's older than
// any of its input files, and if not, there's no need to process
// this group. get the filetime of the output file.
var outputFileTime = outputFileInfo.LastWriteTimeUtc;
// if we don't want a symbol map, then ignore that output. But if we
// do and it doesn't exist, then we want to process the group. If we
// do and it does, then check its filetime and set out output filetime
// to be the earliest of the two (output or symbols)
if (!IgnoreSourceMapOutput && symbolsFileInfo != null)
{
var symbolsFileTime = symbolsFileInfo.LastWriteTimeUtc;
if (symbolsFileTime < outputFileTime)
{
outputFileTime = symbolsFileTime;
}
}
// first check the time of the manifest file itself. If it's newer than the output
// time, then we need to process. Otherwise we need to check each input source file.
// also rebuild if they're equal, just in case.
if (manifestModifiedTime >= outputFileTime)
{
// the manifest itself has been changed after the last output that was generated,
// so yes: we need to process this group.
processGroup = true;
}
else
{
// check filetime of each input file, and if ANY one is newer,
// then we will want to set the process-group flag and stop checking
foreach (var input in outputGroup.Inputs)
{
var fileInfo = new FileInfo(input.Path);
if (fileInfo.Exists)
{
// equal time also means process the output, because that is just SO close to
// the input being newer. Plus, someone might have the input be the output, so
// the times will be equal and we will want to process it.
if (fileInfo.LastWriteTimeUtc >= outputFileTime)
{
processGroup = true;
break;
}
}
else
{
// file doesn't exist -- check to see if it's a directory
var folderInfo = new DirectoryInfo(fileInfo.FullName);
if (folderInfo.Exists)
{
// not a FILE, it's a FOLDER of files.
// in order to specify an input folder, we need to have had the right type attribute
// on the output group so we know what kind of files to look for
if (codeType == CodeType.Unknown)
{
// log an error, then bail because we won't be able to do anything anyway
// since we don't know what kind of code we are processing and we don't know which
// files to include from this folder.
Log.LogError(Strings.DirectorySourceRequiresCodeType);
return(false);
}
else
{
// recursively check all the files in the folder with the proper extension for the code type.
// if anything pops positive, we know we want to process the group so bail early.
processGroup = CheckFolderInputFileTimes(folderInfo, ExtensionsFromCodeType(codeType), outputFileTime);
if (processGroup)
{
break;
}
}
}
}
}
}
// do the same to any resource file, there are any (and we don't already know we
// want to process this group)
if (!processGroup && outputGroup.Resources.Count > 0)
{
foreach (var resource in outputGroup.Resources)
{
var fileInfo = new FileInfo(resource.Path);
if (fileInfo.Exists && fileInfo.LastWriteTimeUtc >= outputFileTime)
{
processGroup = true;
break;
}
}
}
}
return(processGroup);
}
protected abstract void GenerateStyleSheet(OutputGroup outputGroup, IList <InputGroup> inputGroups, UglifyCommandParser uglifyCommandParser, string outputPath, Encoding outputEncoding);
/// <summary>
/// Walk the list of inputs for a given output group, and create a list of input groups
/// consisting of the source and origin. Consecutive project inputs are concatenated together,
/// and external inputs are kept separate.
/// </summary>
/// <param name="outputGroup">output group</param>
/// <param name="defaultEncodingName">default encoding name to use if none specified</param>
/// <param name="rawInputBuilder">output the raw source to this builder, no added comments</param>
/// <param name="sourceLength">length of the raw source</param>
/// <returns>list of input groups consisting of source code and origin</returns>
public static IList <InputGroup> ReadInputGroups(this OutputGroup outputGroup, string defaultEncodingName)
{
var inputGroups = new List <InputGroup>();
if (outputGroup != null)
{
if (outputGroup.Inputs.Count == 0)
{
try
{
// try setting the input encoding - sometimes this fails!
Console.InputEncoding = GetInputEncoding(defaultEncodingName);
}
catch (IOException e)
{
// error setting the encoding input; just use whatever the default is
System.Diagnostics.Debug.WriteLine(e.ToString());
}
var sourceComment = outputGroup.CodeType == CodeType.StyleSheet
? "/*/#SOURCE 1 1 stdin */\r\n"
: "///#SOURCE 1 1 stdin\r\n";
// read from stdin, append to the builder, then create a single project input group
// from the build code.
var sourceCode = Console.In.ReadToEnd();
inputGroups.Add(new InputGroup
{
RawSource = sourceCode,
Source = sourceComment + sourceCode,
Origin = SourceOrigin.Project
});
}
else
{
// start off saying the previous item ends in a semicolon so we don't add one before the first file
var fileReadBuilder = new FileReadBuilder {
EndsInSemicolon = true
};
for (var ndx = 0; ndx < outputGroup.Inputs.Count; ++ndx)
{
var inputFile = outputGroup.Inputs[ndx];
if (inputFile.Origin == SourceOrigin.External)
{
// we found an external input file.
// if we were building up project input files, dump what we have into a new group and clear it out
if (fileReadBuilder.Length > 0)
{
inputGroups.Add(new InputGroup
{
Source = fileReadBuilder.ToString(),
RawSource = fileReadBuilder.ToRawString(),
Origin = SourceOrigin.Project
});
}
// read the content of the external file, passing in false for whether the previous file
// ended in a semicolon so that one will ALWAYS get prepended. Add a new input group for the
// content by itself, and then always reset the semicolon flag to false so that the NEXT code
// will be separated from the external code with another semicolon.
fileReadBuilder.Clear();
ReadFile(inputFile, fileReadBuilder, outputGroup.CodeType, defaultEncodingName);
inputGroups.Add(new InputGroup
{
Source = fileReadBuilder.ToString(),
RawSource = fileReadBuilder.ToRawString(),
Origin = SourceOrigin.External
});
fileReadBuilder.Clear();
fileReadBuilder.EndsInSemicolon = false;
}
else
{
// read the project input file into the group builder, with context.
ReadFile(inputFile, fileReadBuilder, outputGroup.CodeType, defaultEncodingName);
}
}
// if there is anything left, add it as a new input group now
if (fileReadBuilder.Length > 0)
{
inputGroups.Add(new InputGroup
{
Source = fileReadBuilder.ToString(),
RawSource = fileReadBuilder.ToRawString(),
Origin = SourceOrigin.Project
});
}
}
}
return(inputGroups);
}
/// <summary>
/// Given the current configuration, return the appropriate argument string
/// </summary>
/// <param name="outputGroup">output group object</param>
/// <param name="configuration">current configuration</param>
/// <returns>argument string, or empty string if not found</returns>
public static string GetConfigArguments(this OutputGroup outputGroup, string configuration)
{
return(outputGroup == null ? string.Empty : GetConfigArguments(outputGroup.Arguments, configuration));
}
private static OutputGroup ReadOutputElement(XmlReader reader)
{
var outputNode = new OutputGroup();
while (reader.Read())
{
// get the attributes
if (reader.Name == OutputElementName && reader.HasAttributes)
{
while (reader.MoveToNextAttribute())
{
switch (reader.Name)
{
case PathAttributeName:
outputNode.Path = reader.Value;
break;
case EncodingAttributeName:
case EncodingAttributeShortName:
outputNode.EncodingName = reader.Value;
break;
case TypeAttributeName:
switch (reader.Value.ToUpperInvariant())
{
case "JS":
case "JAVASCRIPT":
case "JSCRIPT":
outputNode.CodeType = CodeType.JavaScript;
break;
case "CSS":
case "STYLESHEET":
case "STYLESHEETS":
outputNode.CodeType = CodeType.StyleSheet;
break;
}
break;
case MapPathAttributeName:
outputNode.SymbolMap = new SymbolMap()
{
Path = reader.Value
};
break;
}
}
// back to element
reader.MoveToElement();
}
// process child elements
if (reader.NodeType == XmlNodeType.Element)
{
switch (reader.Name)
{
case ArgumentsElementName:
ReadArgumentsElement(reader.ReadSubtree(), outputNode.Arguments);
break;
case RenameElementName:
ReadRenameElement(reader.ReadSubtree(), outputNode.RenameIdentifiers);
break;
case NoRenameElementName:
ReadNoRenameElement(reader.ReadSubtree(), outputNode.NoRenameIdentifiers);
break;
case SymbolMapElementName:
outputNode.SymbolMap = ReadSymbolMapElement(reader.ReadSubtree());
break;
case ResourceElementName:
outputNode.Resources.Add(ReadResourceElement(reader.ReadSubtree()));
break;
case InputElementName:
outputNode.Inputs.Add(ReadInputElement(reader.ReadSubtree()));
break;
}
}
}
((IDisposable)reader).Dispose();
return(outputNode);
}
