new-life-songs/shell.gradle

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// ## Utility methods for working with processes.
def shell_(List<String> cmd) { shell(cmd, null, false) }
def shell_(String... cmd) { shell(cmd, null, false) }
def shell(String... cmd) { shell(cmd, null, true) }
def shell(List<String> cmd, File workingDir, boolean checkExit) {
shell(cmd as String[], workingDir, checkExit) }
def shell(String[] cmd, File workingDir, boolean checkExit) {
def pb = new ProcessBuilder(cmd)
if (workingDir) pb.directory(workingDir)
def process = pb.start()
process.waitForProcessOutput(System.out, System.err)
if (process.exitValue() != 0)
println "Command $cmd exited with non-zero result code."
if (checkExit) assert process.exitValue() == 0 : "Not ignoring failed command." }
def shell(List<List<String>> cmds, File workingDir) {
cmds.each {
ProcessBuilder pb = new ProcessBuilder(it)
pb.directory(workingDir)
pb.start().waitForProcessOutput(System.out, System.err) } }
def spawn(String... cmd) { spawn(cmd, null) }
def spawn(List<String> cmd, File workingDir) { spawn(cmd as String[], workingDir) }
def spawn(String[] cmd, File workingDir) {
def pb = new ProcessBuilder(cmd)
if (workingDir) pb.directory(workingDir)
def process = pb.start() }