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Diffstat (limited to 'support/arara/source/src/main/java/com/github/cereda/arara/utils/UnsafeUtils.java')
-rw-r--r-- | support/arara/source/src/main/java/com/github/cereda/arara/utils/UnsafeUtils.java | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/support/arara/source/src/main/java/com/github/cereda/arara/utils/UnsafeUtils.java b/support/arara/source/src/main/java/com/github/cereda/arara/utils/UnsafeUtils.java new file mode 100644 index 0000000000..b989e074c8 --- /dev/null +++ b/support/arara/source/src/main/java/com/github/cereda/arara/utils/UnsafeUtils.java @@ -0,0 +1,87 @@ +/** + * Arara, the cool TeX automation tool + * Copyright (c) 2012 -- 2018, Paulo Roberto Massa Cereda + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the project's author nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY + * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ +package com.github.cereda.arara.utils; + +import com.github.cereda.arara.model.Command; +import com.github.cereda.arara.model.Pair; +import org.zeroturnaround.exec.ProcessExecutor; +import org.zeroturnaround.exec.ProcessResult; + +/** + * Implements unsafe utilitary methods. + * @author Paulo Roberto Massa Cereda + * @version 4.0 + * @since 4.0 + */ +public class UnsafeUtils { + + /** + * Executes a system command from the underlying operating system and + * returns a pair containing the exit status and the command output as a + * string. + * @param command The system command to be executed. + * @return A pair containing the exit status and the system command output + * as a string. + */ + public static Pair<Integer, String> executeSystemCommand(Command command) { + + try { + + // create a process result with the provided + // command, capturing the output + ProcessResult result = new ProcessExecutor( + command.getElements() + ).readOutput(true).execute(); + + // return the pair containing the exit status + // and the output string as UTF-8 + return new Pair<Integer, String>( + result.getExitValue(), + result.outputUTF8() + ); + + } catch (Exception exception) { + + // quack, quack, do nothing, just + // return a default error code + + // if something goes wrong, the default + // error branch returns an exit status of + // -99 and an empty string + return new Pair<Integer, String>(-99, ""); + + } + } + +} |