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Groovy example source code file (ShellRunner.groovy)
The Groovy ShellRunner.groovy source code/* * Copyright 2003-2007 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.codehaus.groovy.tools.shell import org.codehaus.groovy.tools.shell.util.Logger /** * Support for running a {@link Shell}. * * @version $Id: ShellRunner.groovy 21140 2010-11-28 19:50:55Z hamletdrc $ * @author <a href="mailto:jason@planet57.com">Jason Dillon */ abstract class ShellRunner implements Runnable { protected final Logger log = Logger.create(this.class) final Shell shell boolean running = false boolean breakOnNull = true Closure errorHandler = { e -> log.debug(e) running = false } ShellRunner(final Shell shell) { assert shell this.shell = shell } void run() { log.debug('Running') running = true while (running) { try { running = work() } catch (ExitNotification n) { throw n } catch (Throwable t) { log.debug("Work failed: $t", t) if (errorHandler) { errorHandler.call(t) } } } log.debug('Finished') } protected boolean work() { def line = readLine() if (log.debugEnabled) { log.debug("Read line: $line") } // Stop on null (maybe) if (line == null && breakOnNull) { return false // stop the loop } // Ignore empty lines if (line.trim().size() > 0) { def result = shell << line } return true } protected abstract String readLine() } Other Groovy examples (source code examples)Here is a short list of links related to this Groovy ShellRunner.groovy source code file: |
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