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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2010, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala.sys
package process
import processInternal._
import ProcessBuilder._
/** Represents a runnable process. */
trait ProcessBuilder extends Source with Sink {
/** 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
/** 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
}
object ProcessBuilder extends ProcessBuilderImpl {
trait URLBuilder extends Source {
}
trait FileBuilder extends Sink with Source {
def #<<(f: File): ProcessBuilder
def #<<(u: URL): ProcessBuilder
def #<<(i: => InputStream): ProcessBuilder
def #<<(p: ProcessBuilder): ProcessBuilder
}
trait Source {
protected def toSource: ProcessBuilder
/** 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 OStreamBuilder(out, "<output stream>"))
def #>(b: ProcessBuilder): ProcessBuilder = new PipedBuilder(toSource, b, false)
def cat = toSource
private def toFile(f: File, append: Boolean) = #> (new FileOutput(f, append))
}
trait Sink {
protected def toSink: ProcessBuilder
/** 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 IStreamBuilder(in, "<input stream>"))
def #<(b: ProcessBuilder): ProcessBuilder = new PipedBuilder(b, toSink, false)
}
}
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