/* sbt -- Simple Build Tool * Copyright 2009 Mark Harrah */ package sbt import java.lang.{Process => JProcess, ProcessBuilder => JProcessBuilder} import java.io.{Closeable, File, IOException} import java.io.{BufferedReader, InputStream, InputStreamReader, OutputStream, PipedInputStream, PipedOutputStream} import java.net.URL trait ProcessExtra { import Process._ implicit def builderToProcess(builder: JProcessBuilder): ProcessBuilder = apply(builder) implicit def fileToProcess(file: File): FilePartialBuilder = apply(file) implicit def urlToProcess(url: URL): URLPartialBuilder = apply(url) implicit def xmlToProcess(command: scala.xml.Elem): ProcessBuilder = apply(command) implicit def buildersToProcess[T](builders: Seq[T])(implicit convert: T => SourcePartialBuilder): Seq[SourcePartialBuilder] = applySeq(builders) implicit def stringToProcess(command: String): ProcessBuilder = apply(command) implicit def stringSeqToProcess(command: Seq[String]): ProcessBuilder = apply(command) } /** Methods for constructing simple commands that can then be combined. */ object Process extends ProcessExtra { def apply(command: String): ProcessBuilder = apply(command, None) def apply(command: Seq[String]): ProcessBuilder = apply (command.toArray, None) def apply(command: String, arguments: Seq[String]): ProcessBuilder = apply(command :: arguments.toList, None) /** create ProcessBuilder with working dir set to File and extra environment variables */ def apply(command: String, cwd: File, extraEnv: (String,String)*): ProcessBuilder = apply(command, Some(cwd), extraEnv : _*) /** create ProcessBuilder with working dir set to File and extra environment variables */ def apply(command: Seq[String], cwd: File, extraEnv: (String,String)*): ProcessBuilder = apply(command, Some(cwd), extraEnv : _*) /** create ProcessBuilder with working dir optionaly set to File and extra environment variables */ def apply(command: String, cwd: Option[File], extraEnv: (String,String)*): ProcessBuilder = { apply(command.split("""\s+"""), cwd, extraEnv : _*) // not smart to use this on windows, because CommandParser uses \ to escape ". /*CommandParser.parse(command) match { case Left(errorMsg) => error(errorMsg) case Right((cmd, args)) => apply(cmd :: args, cwd, extraEnv : _*) }*/ } /** create ProcessBuilder with working dir optionaly set to File and extra environment variables */ def apply(command: Seq[String], cwd: Option[File], extraEnv: (String,String)*): ProcessBuilder = { val jpb = new JProcessBuilder(command.toArray : _*) cwd.foreach(jpb directory _) extraEnv.foreach { case (k, v) => jpb.environment.put(k, v) } apply(jpb) } def apply(builder: JProcessBuilder): ProcessBuilder = new SimpleProcessBuilder(builder) def apply(file: File): FilePartialBuilder = new FileBuilder(file) def apply(url: URL): URLPartialBuilder = new URLBuilder(url) def apply(command: scala.xml.Elem): ProcessBuilder = apply(command.text.trim) def applySeq[T](builders: Seq[T])(implicit convert: T => SourcePartialBuilder): Seq[SourcePartialBuilder] = builders.map(convert) def apply(value: Boolean): ProcessBuilder = apply(value.toString, if(value) 0 else 1) def apply(name: String, exitValue: => Int): ProcessBuilder = new DummyProcessBuilder(name, exitValue) def cat(file: SourcePartialBuilder, files: SourcePartialBuilder*): ProcessBuilder = cat(file :: files.toList) def cat(files: Seq[SourcePartialBuilder]): ProcessBuilder = { require(!files.isEmpty) files.map(_.cat).reduceLeft(_ #&& _) } } trait SourcePartialBuilder extends NotNull { /** Writes the output stream of this process to the given file. */ def #> (f: File): ProcessBuilder = toFile(f, false) /** Appends the output stream of this process to the given file. */ def #>> (f: File): ProcessBuilder = toFile(f, true) /** Writes the output stream of this process to the given OutputStream. The * argument is call-by-name, so the stream is recreated, written, and closed each * time this process is executed. */ def #>(out: => OutputStream): ProcessBuilder = #> (new OutputStreamBuilder(out)) def #>(b: ProcessBuilder): ProcessBuilder = new PipedProcessBuilder(toSource, b, false) private def toFile(f: File, append: Boolean) = #> (new FileOutput(f, append)) def cat = toSource protected def toSource: ProcessBuilder } trait SinkPartialBuilder extends NotNull { /** Reads the given file into the input stream of this process. */ def #< (f: File): ProcessBuilder = #< (new FileInput(f)) /** Reads the given URL into the input stream of this process. */ def #< (f: URL): ProcessBuilder = #< (new URLInput(f)) /** Reads the given InputStream into the input stream of this process. The * argument is call-by-name, so the stream is recreated, read, and closed each * time this process is executed. */ def #<(in: => InputStream): ProcessBuilder = #< (new InputStreamBuilder(in)) def #<(b: ProcessBuilder): ProcessBuilder = new PipedProcessBuilder(b, toSink, false) protected def toSink: ProcessBuilder } trait URLPartialBuilder extends SourcePartialBuilder trait FilePartialBuilder extends SinkPartialBuilder with SourcePartialBuilder { def #<<(f: File): ProcessBuilder def #<<(u: URL): ProcessBuilder def #<<(i: => InputStream): ProcessBuilder def #<<(p: ProcessBuilder): ProcessBuilder } /** Represents a process that is running or has finished running. * It may be a compound process with several underlying native processes (such as 'a #&& b`).*/ trait Process extends NotNull { /** Blocks until this process exits and returns the exit code.*/ def exitValue(): Int /** Destroys this process. */ def destroy(): Unit } /** Represents a runnable process. */ trait ProcessBuilder extends SourcePartialBuilder with SinkPartialBuilder { /** Starts the process represented by this builder, blocks until it exits, and returns the output as a String. Standard error is * sent to the console. If the exit code is non-zero, an exception is thrown.*/ def !! : String /** Starts the process represented by this builder, blocks until it exits, and returns the output as a String. Standard error is * sent to the provided ProcessLogger. If the exit code is non-zero, an exception is thrown.*/ def !!(log: ProcessLogger) : String /** Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available * but the process has not completed. Standard error is sent to the console. If the process exits with a non-zero value, * the Stream will provide all lines up to termination and then throw an exception. */ def lines: Stream[String] /** Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available * but the process has not completed. Standard error is sent to the provided ProcessLogger. If the process exits with a non-zero value, * the Stream will provide all lines up to termination but will not throw an exception. */ def lines(log: ProcessLogger): Stream[String] /** Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available * but the process has not completed. Standard error is sent to the console. If the process exits with a non-zero value, * the Stream will provide all lines up to termination but will not throw an exception. */ def lines_! : Stream[String] /** Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available * but the process has not completed. Standard error is sent to the provided ProcessLogger. If the process exits with a non-zero value, * the Stream will provide all lines up to termination but will not throw an exception. */ def lines_!(log: ProcessLogger): Stream[String] /** Starts the process represented by this builder, blocks until it exits, and returns the exit code. Standard output and error are * sent to the console.*/ def ! : Int /** Starts the process represented by this builder, blocks until it exits, and returns the exit code. Standard output and error are * sent to the given ProcessLogger.*/ def !(log: ProcessLogger): Int /** Starts the process represented by this builder, blocks until it exits, and returns the exit code. Standard output and error are * sent to the console. The newly started process reads from standard input of the current process.*/ def !< : Int /** Starts the process represented by this builder, blocks until it exits, and returns the exit code. Standard output and error are * sent to the given ProcessLogger. The newly started process reads from standard input of the current process.*/ def !<(log: ProcessLogger) : Int /** Starts the process represented by this builder. Standard output and error are sent to the console.*/ def run(): Process /** Starts the process represented by this builder. Standard output and error are sent to the given ProcessLogger.*/ def run(log: ProcessLogger): Process /** Starts the process represented by this builder. I/O is handled by the given ProcessIO instance.*/ def run(io: ProcessIO): Process /** Starts the process represented by this builder. Standard output and error are sent to the console. * The newly started process reads from standard input of the current process if `connectInput` is true.*/ def run(connectInput: Boolean): Process /** Starts the process represented by this builder, blocks until it exits, and returns the exit code. Standard output and error are * sent to the given ProcessLogger. * The newly started process reads from standard input of the current process if `connectInput` is true.*/ def run(log: ProcessLogger, connectInput: Boolean): Process def runBuffered(log: ProcessLogger, connectInput: Boolean): Process /** Constructs a command that runs this command first and then `other` if this command succeeds.*/ def #&& (other: ProcessBuilder): ProcessBuilder /** Constructs a command that runs this command first and then `other` if this command does not succeed.*/ def #|| (other: ProcessBuilder): ProcessBuilder /** Constructs a command that will run this command and pipes the output to `other`. `other` must be a simple command.*/ def #| (other: ProcessBuilder): ProcessBuilder /** Constructs a command that will run this command and then `other`. The exit code will be the exit code of `other`.*/ def ### (other: ProcessBuilder): ProcessBuilder def canPipeTo: Boolean } /** Each method will be called in a separate thread.*/ final class ProcessIO(val writeInput: OutputStream => Unit, val processOutput: InputStream => Unit, val processError: InputStream => Unit, val inheritInput: JProcessBuilder => Boolean) extends NotNull { def withOutput(process: InputStream => Unit): ProcessIO = new ProcessIO(writeInput, process, processError, inheritInput) def withError(process: InputStream => Unit): ProcessIO = new ProcessIO(writeInput, processOutput, process, inheritInput) def withInput(write: OutputStream => Unit): ProcessIO = new ProcessIO(write, processOutput, processError, inheritInput) } trait ProcessLogger { def info(s: => String): Unit def error(s: => String): Unit def buffer[T](f: => T): T }