Java exec executeShellScript(final String shellScript, final File tempDirectory)

Description

execute Shell Script

License

Open Source License

Declaration

public static String[] executeShellScript(final String shellScript,
            final File tempDirectory) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.PrintWriter;
import java.io.FileWriter;
import java.util.UUID;

import java.io.IOException;
import java.util.ArrayList;

import java.io.InputStreamReader;

import java.io.BufferedReader;
import java.io.File;

public class Main {
    public static String[] executeShellScript(final String shellScript,
            final File tempDirectory) {
        final File shellFile = new File(tempDirectory, "tempFile_"
                + UUID.randomUUID() + ".sh");
        final String fullPath = getFullPathName(shellFile);
        writeString(shellScript, shellFile);
        String[] cmd = { "chmod", "777", fullPath };
        String[] res = executeCommandLineReturnAll(cmd);
        if (res == null || res.length != 0) {
            shellFile.delete();//from   w  w  w.j a  va2s . c o m
            return null;
        }
        cmd = new String[] { fullPath };
        res = executeCommandLineReturnAll(cmd);
        shellFile.delete();
        return res;
    }

    public static String getFullPathName(final File fileDirectory) {
        String full = null;
        try {
            full = fileDirectory.getCanonicalPath();
        } catch (IOException e) {
            System.out.println("Problem with getFullPathtName(), "
                    + fileDirectory);
            e.printStackTrace();
        }
        return full;
    }

    public static boolean writeString(final String data, final File file) {
        try {
            final PrintWriter out = new PrintWriter(new FileWriter(file));
            out.print(data);
            out.close();
            return true;
        } catch (IOException e) {
            System.out.println("Problem writing String to disk!");
            e.printStackTrace();
            return false;
        }
    }

    public static String[] executeCommandLineReturnAll(
            final String[] command) {
        final ArrayList<String> al = new ArrayList<String>();
        try {
            final Runtime rt = Runtime.getRuntime();
            rt.traceInstructions(true);
            rt.traceMethodCalls(true);
            final Process p = rt.exec(command);
            final BufferedReader data = new BufferedReader(
                    new InputStreamReader(p.getInputStream()));
            final BufferedReader error = new BufferedReader(
                    new InputStreamReader(p.getErrorStream()));
            String line;
            while ((line = data.readLine()) != null) {
                al.add(line);
            }
            while ((line = error.readLine()) != null) {
                al.add(line);
            }
            data.close();
            error.close();
        } catch (Exception e) {
            System.out.println("Problem executing -> "
                    + stringArrayToString(command, " ") + " "
                    + e.getLocalizedMessage());
            e.printStackTrace();
            return null;
        }
        final String[] res = new String[al.size()];
        al.toArray(res);
        return res;
    }

    public static String stringArrayToString(final String[] s,
            final String separator) {
        if (s == null) {
            return "";
        }
        final int len = s.length;
        if (len == 1) {
            return s[0];
        }
        if (len == 0) {
            return "";
        }
        final StringBuffer sb = new StringBuffer(s[0]);
        for (int i = 1; i < len; ++i) {
            sb.append(separator);
            sb.append(s[i]);
        }
        return sb.toString();
    }
}

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