From ecc10994ca33ad06a13aca790aafd87bf2b878e8 Mon Sep 17 00:00:00 2001
From: Emmanuel Bigeon <emmanuel@bigeon.fr>
Date: Fri, 5 Aug 2016 09:54:35 -0400
Subject: [PATCH] New project for the system command execution command in gclc

Signed-off-by: Emmanuel Bigeon <emmanuel@bigeon.fr>
---
 gclc.system/.gitignore                        |   4 +
 gclc.system/pom.xml                           |  41 ++++++
 .../bigeon/gclc/system/ExecSystemCommand.java | 139 ++++++++++++++++++
 .../java/net/bigeon/gclc/system/AppTest.java  |  38 +++++
 4 files changed, 222 insertions(+)
 create mode 100644 gclc.system/.gitignore
 create mode 100644 gclc.system/pom.xml
 create mode 100644 gclc.system/src/main/java/net/bigeon/gclc/system/ExecSystemCommand.java
 create mode 100644 gclc.system/src/test/java/net/bigeon/gclc/system/AppTest.java

diff --git a/gclc.system/.gitignore b/gclc.system/.gitignore
new file mode 100644
index 0000000..d98981c
--- /dev/null
+++ b/gclc.system/.gitignore
@@ -0,0 +1,4 @@
+/target/
+/.classpath
+/.project
+/.settings/
diff --git a/gclc.system/pom.xml b/gclc.system/pom.xml
new file mode 100644
index 0000000..c3b3e56
--- /dev/null
+++ b/gclc.system/pom.xml
@@ -0,0 +1,41 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>net.bigeon</groupId>
+  <artifactId>gclc.system</artifactId>
+  <version>0.0.1-SNAPSHOT</version>
+  <packaging>jar</packaging>
+  <url>http://www.bigeon.net</url>
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+  <build>
+    <plugins>
+    </plugins>
+  </build>
+  <dependencies>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.11</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>fr.bigeon</groupId>
+      <artifactId>gclc</artifactId>
+      <version>1.2.5</version>
+    </dependency>
+  </dependencies>
+  <name>GCLC system command</name>
+  <description>Provide an exec command to execute system commands</description>
+  <inceptionYear>2016</inceptionYear>
+  <scm>
+    <developerConnection>scm:git:gogs@git.code.bigeon.net:emmanuel/gclc.git</developerConnection>
+    <tag>HEAD</tag>
+  </scm>
+  <parent>
+    <groupId>fr.bigeon</groupId>
+    <artifactId>ebigeon-config</artifactId>
+    <version>1.7.0</version>
+  </parent>
+</project>
diff --git a/gclc.system/src/main/java/net/bigeon/gclc/system/ExecSystemCommand.java b/gclc.system/src/main/java/net/bigeon/gclc/system/ExecSystemCommand.java
new file mode 100644
index 0000000..81a86c6
--- /dev/null
+++ b/gclc.system/src/main/java/net/bigeon/gclc/system/ExecSystemCommand.java
@@ -0,0 +1,139 @@
+/**
+ * gclc.system:net.bigeon.gclc.system.ExecSystemCommand.java
+ * Created on: Jun 20, 2016
+ */
+package net.bigeon.gclc.system;
+
+import java.io.BufferedWriter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import fr.bigeon.gclc.command.Command;
+import fr.bigeon.gclc.exception.CommandRunException;
+import fr.bigeon.gclc.exception.CommandRunExceptionType;
+import fr.bigeon.gclc.manager.ConsoleManager;
+
+/** <p>
+ * TODO
+ *
+ * @author Emmanuel Bigeon */
+public class ExecSystemCommand extends Command {
+
+    private static final String EOL = System.lineSeparator();
+    /** The class logger */
+    private static final Logger LOGGER = Logger
+            .getLogger(ExecSystemCommand.class.getName());
+    private final ConsoleManager manager;
+
+    /** @param name
+     * @param manager */
+    public ExecSystemCommand(String name, ConsoleManager manager) {
+        super(name);
+        this.manager = manager;
+    }
+
+    /** @param name
+     * @param manager */
+    public ExecSystemCommand(ConsoleManager manager) {
+        super("exec");
+        this.manager = manager;
+    }
+
+    /* (non-Javadoc)
+     * @see fr.bigeon.gclc.command.ICommand#execute(java.lang.String[]) */
+    @Override
+    public void execute(String... args) throws CommandRunException {
+        Process proc;
+        try {
+            proc = Runtime.getRuntime().exec(args);
+        } catch (IOException e2) {
+            LOGGER.log(Level.SEVERE, "Unable to run process", e2);
+            return;
+        }
+
+        final InputStream is = proc.getInputStream();
+        Thread th = new Thread(new Runnable() {
+
+            @Override
+            public void run() {
+                try {
+                    readToEnd(is);
+                } catch (CommandRunException e) {
+                    LOGGER.log(Level.WARNING,
+                            "Manager was closed in the meantime...", e);
+                }
+            }
+        });
+        th.start();
+        manager.setPrompt("");
+        final OutputStream os = proc.getOutputStream();
+        try (BufferedWriter writer = new BufferedWriter(
+                new OutputStreamWriter(os))) {
+            while (th.isAlive()) {
+                String user;
+                try {
+                    user = manager.prompt();
+                } catch (IOException e) {
+                    throw new CommandRunException(
+                            CommandRunExceptionType.INTERACTION,
+                            "manager was closed", e, this);
+                }
+                writer.write(user + EOL);
+            }
+        } catch (IOException e1) {
+            // TODO Auto-generated catch block
+            e1.printStackTrace();
+        }
+    }
+
+    /** @param is the input stream
+     * @throws CommandRunException */
+    protected void readToEnd(InputStream is) throws CommandRunException {
+        int c;
+        try {
+            while ((c = is.read()) != -1) {
+                try {
+                    manager.print(Character.valueOf((char) c).toString());
+                } catch (IOException e) {
+                    throw new CommandRunException(
+                            CommandRunExceptionType.INTERACTION,
+                            "manager was closed", e, this);
+                }
+            }
+        } catch (IOException e) {
+            LOGGER.log(Level.INFO, "input stream reading failed", e);
+        }
+    }
+
+    /* (non-Javadoc)
+     * @see fr.bigeon.gclc.command.Command#usageDetail() */
+    @Override
+    protected String usageDetail() {
+        return "  The system command is a system dependend command like sh on linux or" +
+               System.lineSeparator() + "powershell on windows." +
+               System.lineSeparator() + System.lineSeparator() +
+               "  As an example if you give \"cat /etc/hostname\" as argument, on a linux" +
+               System.lineSeparator() +
+               "system, you would get the computer name." +
+               System.lineSeparator();
+    }
+
+    /* (non-Javadoc)
+     * @see fr.bigeon.gclc.command.Command#usagePattern() */
+    @Override
+    protected String usagePattern() {
+        return "  CMD <system command>";
+    }
+
+    /* (non-Javadoc)
+     * @see fr.bigeon.gclc.command.ICommand#tip() */
+    @Override
+    public String tip() {
+        return "Execute a system command";
+    }
+
+}
diff --git a/gclc.system/src/test/java/net/bigeon/gclc/system/AppTest.java b/gclc.system/src/test/java/net/bigeon/gclc/system/AppTest.java
new file mode 100644
index 0000000..543473d
--- /dev/null
+++ b/gclc.system/src/test/java/net/bigeon/gclc/system/AppTest.java
@@ -0,0 +1,38 @@
+package net.bigeon.gclc.system;
+
+import junit.framework.Test;
+import junit.framework.TestCase;
+import junit.framework.TestSuite;
+
+/**
+ * Unit test for simple App.
+ */
+public class AppTest 
+    extends TestCase
+{
+    /**
+     * Create the test case
+     *
+     * @param testName name of the test case
+     */
+    public AppTest( String testName )
+    {
+        super( testName );
+    }
+
+    /**
+     * @return the suite of tests being tested
+     */
+    public static Test suite()
+    {
+        return new TestSuite( AppTest.class );
+    }
+
+    /**
+     * Rigourous Test :-)
+     */
+    public void testApp()
+    {
+        assertTrue( true );
+    }
+}