A simple Scala library for no-fuss process runnning.
To include process-runner in your project, add the following line to your build.sbt:
libraryDependencies += "com.ferega.procrun" %% "processrunner" % "0.1.5"It is published for Scala 2.11 and 2.10.
- Uses
java.lang.ProcessBuilderin the background - Process managment is asynchronous
- Collects process output (both
stdoutandstderr), which can be fetched at any time during or after execution - Provides an easy way to write to process
stdin - Processes can be destroyed
- Can wait for a process to finish (with a timeout)
Listing folder contents by specifying a working directory (Linux):
// Runs `ls`, in the specified folder, and immediately returns its output.
import com.ferega.procrun._
def listFolder(folder: File): String =
new ProcessRunner("folder listing", folder, "ls").end.stdOutListing folder contents by passing the directory as an argument (Linux):
// Runs `ls`, with a single argument, and immediately returns its output.
import com.ferega.procrun._
def listFolder(folder: File): String =
new ProcessRunner("folder listing", "ls", Seq(folder.getAbsolutePath)).end.stdOutGenerating a calendar (Linux):
// Runs `cal` with specified year and month and returns generated calendar if
// successful (from stdout). Otherwise, returns error description (from stderr).
import com.ferega.procrun._
def getCalendar(year: Int, month: Int): String = {
val result = new ProcessRunner("calendar", "cal", "-m" | month | year).end
if (result.exitCode == 0) {
result.stdOut.trim
} else {
"Error: " + result.stdErr.split("\n")(0) // Just the first line of output
}
}Running cmd and executing a specified command by writing to stdin (Windows):
import com.ferega.procrun._
def runCommand(command: String): String = {
val p = new ProcessRunner("command executor", "cmd").run
p.writeToStdIn(command + "\r\n")
p.end.stdOut
}