mirror of https://github.com/sbt/sbt.git
217 lines
11 KiB
Scala
217 lines
11 KiB
Scala
package sbt.internal
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import java.lang.{ Process => JProcess, ProcessBuilder => JProcessBuilder }
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import java.io.{ Closeable, File, IOException }
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import java.io.{ BufferedReader, InputStream, InputStreamReader, OutputStream, PipedInputStream, PipedOutputStream }
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import java.net.URL
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trait ProcessExtra {
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import Process._
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implicit def builderToProcess(builder: JProcessBuilder): ProcessBuilder = apply(builder)
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implicit def fileToProcess(file: File): FilePartialBuilder = apply(file)
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implicit def urlToProcess(url: URL): URLPartialBuilder = apply(url)
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implicit def buildersToProcess[T](builders: Seq[T])(implicit convert: T => SourcePartialBuilder): Seq[SourcePartialBuilder] = applySeq(builders)
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implicit def stringToProcess(command: String): ProcessBuilder = apply(command)
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implicit def stringSeqToProcess(command: Seq[String]): ProcessBuilder = apply(command)
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}
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/** Methods for constructing simple commands that can then be combined. */
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object Process extends ProcessExtra {
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def apply(command: String): ProcessBuilder = apply(command, None)
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def apply(command: Seq[String]): ProcessBuilder = apply(command.toArray, None)
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def apply(command: String, arguments: Seq[String]): ProcessBuilder = apply(command :: arguments.toList, None)
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/** create ProcessBuilder with working dir set to File and extra environment variables */
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def apply(command: String, cwd: File, extraEnv: (String, String)*): ProcessBuilder =
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apply(command, Some(cwd), extraEnv: _*)
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/** create ProcessBuilder with working dir set to File and extra environment variables */
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def apply(command: Seq[String], cwd: File, extraEnv: (String, String)*): ProcessBuilder =
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apply(command, Some(cwd), extraEnv: _*)
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/** create ProcessBuilder with working dir optionally set to File and extra environment variables */
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def apply(command: String, cwd: Option[File], extraEnv: (String, String)*): ProcessBuilder = {
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apply(command.split("""\s+"""), cwd, extraEnv: _*)
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// not smart to use this on windows, because CommandParser uses \ to escape ".
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/*CommandParser.parse(command) match {
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case Left(errorMsg) => error(errorMsg)
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case Right((cmd, args)) => apply(cmd :: args, cwd, extraEnv : _*)
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}*/
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}
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/** create ProcessBuilder with working dir optionally set to File and extra environment variables */
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def apply(command: Seq[String], cwd: Option[File], extraEnv: (String, String)*): ProcessBuilder = {
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val jpb = new JProcessBuilder(command.toArray: _*)
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cwd.foreach(jpb directory _)
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extraEnv.foreach { case (k, v) => jpb.environment.put(k, v) }
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apply(jpb)
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}
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def apply(builder: JProcessBuilder): ProcessBuilder = new SimpleProcessBuilder(builder)
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def apply(file: File): FilePartialBuilder = new FileBuilder(file)
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def apply(url: URL): URLPartialBuilder = new URLBuilder(url)
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def applySeq[T](builders: Seq[T])(implicit convert: T => SourcePartialBuilder): Seq[SourcePartialBuilder] = builders.map(convert)
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def apply(value: Boolean): ProcessBuilder = apply(value.toString, if (value) 0 else 1)
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def apply(name: String, exitValue: => Int): ProcessBuilder = new DummyProcessBuilder(name, exitValue)
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def cat(file: SourcePartialBuilder, files: SourcePartialBuilder*): ProcessBuilder = cat(file :: files.toList)
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def cat(files: Seq[SourcePartialBuilder]): ProcessBuilder =
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{
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require(files.nonEmpty)
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files.map(_.cat).reduceLeft(_ #&& _)
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}
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}
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trait SourcePartialBuilder extends NotNull {
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/** Writes the output stream of this process to the given file. */
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def #>(f: File): ProcessBuilder = toFile(f, false)
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/** Appends the output stream of this process to the given file. */
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def #>>(f: File): ProcessBuilder = toFile(f, true)
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/**
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* Writes the output stream of this process to the given OutputStream. The
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* argument is call-by-name, so the stream is recreated, written, and closed each
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* time this process is executed.
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*/
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def #>(out: => OutputStream): ProcessBuilder = #>(new OutputStreamBuilder(out))
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def #>(b: ProcessBuilder): ProcessBuilder = new PipedProcessBuilder(toSource, b, false, ExitCodes.firstIfNonzero)
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private def toFile(f: File, append: Boolean) = #>(new FileOutput(f, append))
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def cat = toSource
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protected def toSource: ProcessBuilder
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}
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trait SinkPartialBuilder extends NotNull {
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/** Reads the given file into the input stream of this process. */
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def #<(f: File): ProcessBuilder = #<(new FileInput(f))
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/** Reads the given URL into the input stream of this process. */
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def #<(f: URL): ProcessBuilder = #<(new URLInput(f))
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/**
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* Reads the given InputStream into the input stream of this process. The
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* argument is call-by-name, so the stream is recreated, read, and closed each
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* time this process is executed.
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*/
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def #<(in: => InputStream): ProcessBuilder = #<(new InputStreamBuilder(in))
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def #<(b: ProcessBuilder): ProcessBuilder = new PipedProcessBuilder(b, toSink, false, ExitCodes.firstIfNonzero)
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protected def toSink: ProcessBuilder
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}
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trait URLPartialBuilder extends SourcePartialBuilder
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trait FilePartialBuilder extends SinkPartialBuilder with SourcePartialBuilder {
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def #<<(f: File): ProcessBuilder
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def #<<(u: URL): ProcessBuilder
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def #<<(i: => InputStream): ProcessBuilder
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def #<<(p: ProcessBuilder): ProcessBuilder
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}
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/**
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* Represents a process that is running or has finished running.
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* It may be a compound process with several underlying native processes (such as 'a #&& b`).
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*/
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trait Process extends NotNull {
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/** Blocks until this process exits and returns the exit code.*/
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def exitValue(): Int
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/** Destroys this process. */
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def destroy(): Unit
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}
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/** Represents a runnable process. */
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trait ProcessBuilder extends SourcePartialBuilder with SinkPartialBuilder {
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/**
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* Starts the process represented by this builder, blocks until it exits, and returns the output as a String. Standard error is
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* sent to the console. If the exit code is non-zero, an exception is thrown.
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*/
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def !! : String
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/**
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* Starts the process represented by this builder, blocks until it exits, and returns the output as a String. Standard error is
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* sent to the provided ProcessLogger. If the exit code is non-zero, an exception is thrown.
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*/
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def !!(log: ProcessLogger): String
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/**
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* Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available
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* but the process has not completed. Standard error is sent to the console. If the process exits with a non-zero value,
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* the Stream will provide all lines up to termination and then throw an exception.
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*/
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def lines: Stream[String]
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/**
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* Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available
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* but the process has not completed. Standard error is sent to the provided ProcessLogger. If the process exits with a non-zero value,
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* the Stream will provide all lines up to termination but will not throw an exception.
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*/
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def lines(log: ProcessLogger): Stream[String]
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/**
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* Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available
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* but the process has not completed. Standard error is sent to the console. If the process exits with a non-zero value,
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* the Stream will provide all lines up to termination but will not throw an exception.
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*/
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def lines_! : Stream[String]
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/**
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* Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available
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* but the process has not completed. Standard error is sent to the provided ProcessLogger. If the process exits with a non-zero value,
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* the Stream will provide all lines up to termination but will not throw an exception.
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*/
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def lines_!(log: ProcessLogger): Stream[String]
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/**
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* Starts the process represented by this builder, blocks until it exits, and returns the exit code. Standard output and error are
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* sent to the console.
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*/
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def ! : Int
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/**
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* Starts the process represented by this builder, blocks until it exits, and returns the exit code. Standard output and error are
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* sent to the given ProcessLogger.
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*/
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def !(log: ProcessLogger): Int
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/**
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* Starts the process represented by this builder, blocks until it exits, and returns the exit code. Standard output and error are
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* sent to the console. The newly started process reads from standard input of the current process.
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*/
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def !< : Int
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/**
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* Starts the process represented by this builder, blocks until it exits, and returns the exit code. Standard output and error are
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* sent to the given ProcessLogger. The newly started process reads from standard input of the current process.
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*/
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def !<(log: ProcessLogger): Int
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/** Starts the process represented by this builder. Standard output and error are sent to the console.*/
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def run(): Process
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/** Starts the process represented by this builder. Standard output and error are sent to the given ProcessLogger.*/
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def run(log: ProcessLogger): Process
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/** Starts the process represented by this builder. I/O is handled by the given ProcessIO instance.*/
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def run(io: ProcessIO): Process
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/**
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* Starts the process represented by this builder. Standard output and error are sent to the console.
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* The newly started process reads from standard input of the current process if `connectInput` is true.
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*/
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def run(connectInput: Boolean): Process
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/**
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* Starts the process represented by this builder, blocks until it exits, and returns the exit code. Standard output and error are
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* sent to the given ProcessLogger.
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* The newly started process reads from standard input of the current process if `connectInput` is true.
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*/
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def run(log: ProcessLogger, connectInput: Boolean): Process
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def runBuffered(log: ProcessLogger, connectInput: Boolean): Process
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/** Constructs a command that runs this command first and then `other` if this command succeeds.*/
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def #&&(other: ProcessBuilder): ProcessBuilder
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/** Constructs a command that runs this command first and then `other` if this command does not succeed.*/
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def #||(other: ProcessBuilder): ProcessBuilder
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/**
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* Constructs a command that will run this command and pipes the output to `other`.
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* `other` must be a simple command.
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* The exit code will be that of `other` regardless of whether this command succeeds.
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*/
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def #|(other: ProcessBuilder): ProcessBuilder
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/** Constructs a command that will run this command and then `other`. The exit code will be the exit code of `other`.*/
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def ###(other: ProcessBuilder): ProcessBuilder
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def canPipeTo: Boolean
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}
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/** Each method will be called in a separate thread.*/
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final class ProcessIO(val writeInput: OutputStream => Unit, val processOutput: InputStream => Unit, val processError: InputStream => Unit, val inheritInput: JProcessBuilder => Boolean) extends NotNull {
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def withOutput(process: InputStream => Unit): ProcessIO = new ProcessIO(writeInput, process, processError, inheritInput)
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def withError(process: InputStream => Unit): ProcessIO = new ProcessIO(writeInput, processOutput, process, inheritInput)
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def withInput(write: OutputStream => Unit): ProcessIO = new ProcessIO(write, processOutput, processError, inheritInput)
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}
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trait ProcessLogger {
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def info(s: => String): Unit
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def error(s: => String): Unit
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def buffer[T](f: => T): T
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}
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