Ant example source code file (CVSPass.java)

This example Ant source code file (CVSPass.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Ant tags/keywords

a, bufferedreader, buildexception, buildexception, cvspass, file, filereader, io, ioexception, printwriter, printwriter, string, string, stringbuffer, stringbuffer

The CVSPass.java source code

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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.apache.tools.ant.taskdefs;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.util.StringUtils;

/**
 * Adds an new entry to a CVS password file.
 *
 *
 * @since Ant 1.4
 *
 * @ant.task category="scm"
 */
public class CVSPass extends Task {
    /** CVS Root */
    private String cvsRoot = null;
    /** Password file to add password to */
    private File passFile = null;
    /** Password to add to file */
    private String password = null;

    /** Array contain char conversion data */
    private final char[] shifts = {
          0,   1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11,  12,  13,  14,  15,
         16,  17,  18,  19,  20,  21,  22,  23,  24,  25,  26,  27,  28,  29,  30,  31,
        114, 120,  53,  79,  96, 109,  72, 108,  70,  64,  76,  67, 116,  74,  68,  87,
        111,  52,  75, 119,  49,  34,  82,  81,  95,  65, 112,  86, 118, 110, 122, 105,
         41,  57,  83,  43,  46, 102,  40,  89,  38, 103,  45,  50,  42, 123,  91,  35,
        125,  55,  54,  66, 124, 126,  59,  47,  92,  71, 115,  78,  88, 107, 106,  56,
         36, 121, 117, 104, 101, 100,  69,  73,  99,  63,  94,  93,  39,  37,  61,  48,
         58, 113,  32,  90,  44,  98,  60,  51,  33,  97,  62,  77,  84,  80,  85, 223,
        225, 216, 187, 166, 229, 189, 222, 188, 141, 249, 148, 200, 184, 136, 248, 190,
        199, 170, 181, 204, 138, 232, 218, 183, 255, 234, 220, 247, 213, 203, 226, 193,
        174, 172, 228, 252, 217, 201, 131, 230, 197, 211, 145, 238, 161, 179, 160, 212,
        207, 221, 254, 173, 202, 146, 224, 151, 140, 196, 205, 130, 135, 133, 143, 246,
        192, 159, 244, 239, 185, 168, 215, 144, 139, 165, 180, 157, 147, 186, 214, 176,
        227, 231, 219, 169, 175, 156, 206, 198, 129, 164, 150, 210, 154, 177, 134, 127,
        182, 128, 158, 208, 162, 132, 167, 209, 149, 241, 153, 251, 237, 236, 171, 195,
        243, 233, 253, 240, 194, 250, 191, 155, 142, 137, 245, 235, 163, 242, 178, 152
    };

    /**
     * Create a CVS task using the default cvspass file location.
     */
    public CVSPass() {
        passFile = new File(
            System.getProperty("cygwin.user.home",
                System.getProperty("user.home"))
            + File.separatorChar + ".cvspass");
    }

    /**
     * Does the work.
     *
     * @exception BuildException if something goes wrong with the build
     */
    public final void execute() throws BuildException {
        if (cvsRoot == null) {
            throw new BuildException("cvsroot is required");
        }
        if (password == null) {
            throw new BuildException("password is required");
        }

        log("cvsRoot: " + cvsRoot, Project.MSG_DEBUG);
        log("password: " + password, Project.MSG_DEBUG);
        log("passFile: " + passFile, Project.MSG_DEBUG);

        BufferedReader reader = null;
        PrintWriter writer = null;
        try {
            StringBuffer buf = new StringBuffer();

            if (passFile.exists()) {
                reader = new BufferedReader(new FileReader(passFile));

                String line = null;

                while ((line = reader.readLine()) != null) {
                    if (!line.startsWith(cvsRoot)) {
                        buf.append(line).append(StringUtils.LINE_SEP);
                    }
                }
            }

            String pwdfile = buf.toString() + cvsRoot + " A"
                + mangle(password);

            log("Writing -> " + pwdfile , Project.MSG_DEBUG);

            writer = new PrintWriter(new FileWriter(passFile));

            writer.println(pwdfile);
        } catch (IOException e) {
            throw new BuildException(e);
        } finally {
            if (reader != null) {
                try {
                    reader.close();
                } catch (IOException e) {
                    // ignore
                }
            }
            if (writer != null) {
                writer.close();
            }
        }
    }

    private final String mangle(String password) {
        StringBuffer buf = new StringBuffer();
        for (int i = 0; i < password.length(); i++) {
            buf.append(shifts[password.charAt(i)]);
        }
        return buf.toString();
    }

    /**
     * The CVS repository to add an entry for.
     *
     * @param cvsRoot the CVS repository
     */
    public void setCvsroot(String cvsRoot) {
        this.cvsRoot = cvsRoot;
    }

    /**
     * Password file to add the entry to.
     *
     * @param passFile the password file.
     */
    public void setPassfile(File passFile) {
        this.passFile = passFile;
    }

    /**
     * Password to be added to the password file.
     *
     * @param password the password.
     */
    public void setPassword(String password) {
        this.password = password;
    }

}