Java example source code file (GeneralWin32.java)

This example Java source code file (GeneralWin32.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

can\'t, exception, existent_unc_share, file, fileoutputstream, general, ioexception, nonexistent_unc_host, nonexistent_unc_share, outputstream, runtimeexception, string, xyzzy0123\\\\foo_bar_baz\\\\glorpified

The GeneralWin32.java Java example source code

/*
 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/* @test
   @bug 4032066 4039597 4046914 4054511 4065189 4109131 4875229 6983520 8009258
   @summary General exhaustive test of win32 pathname handling
   @author Mark Reinhold

   @build General GeneralWin32
   @run main/timeout=600 GeneralWin32
 */

import java.io.*;

public class GeneralWin32 extends General {


    /**
     * Hardwired UNC pathnames used for testing
     *
     * This test attempts to use the host and share names defined in this class
     * to test UNC pathnames.  The test will not fail if the host or share
     * don't exist, but it will print a warning saying that it was unable to
     * test UNC pathnames completely.
     */
    private static final String EXISTENT_UNC_HOST = "pc-cup01";
    private static final String EXISTENT_UNC_SHARE = "pcdist";
    private static final String NONEXISTENT_UNC_HOST = "non-existent-unc-host";
    private static final String NONEXISTENT_UNC_SHARE = "bogus-share";

    /* Pathnames relative to working directory */

    private static void checkCaseLookup() throws IOException {
        /* Use long names here to avoid 8.3 format, which Samba servers often
           force to lowercase */
        File d = new File("XyZzY0123", "FOO_bar_BAZ");
        File f = new File(d, "GLORPified");
        if (!f.exists()) {
            if (!d.exists()) {
                if (!d.mkdirs()) {
                    throw new RuntimeException("Can't create directory " + d);
                }
            }
            OutputStream o = new FileOutputStream(f);
            o.close();
        }
        File f2 = new File(d.getParent(), "mumble"); /* For later ud tests */
        if (!f2.exists()) {
            OutputStream o = new FileOutputStream(f2);
            o.close();
        }

        /* Computing the canonical path of a Win32 file should expose the true
           case of filenames, rather than just using the input case */
        File y = new File(userDir, f.getPath());
        String ans = y.getPath();
        check(ans, "XyZzY0123\\FOO_bar_BAZ\\GLORPified");
        check(ans, "xyzzy0123\\foo_bar_baz\\glorpified");
        check(ans, "XYZZY0123\\FOO_BAR_BAZ\\GLORPIFIED");
    }

    private static void checkWild(File f) throws Exception {
        try {
            f.getCanonicalPath();
        } catch (IOException x) {
            return;
        }
        throw new Exception("Wildcard path not rejected: " + f);
    }

    private static void checkWildCards() throws Exception {
        File d = new File(userDir).getCanonicalFile();
        checkWild(new File(d, "*.*"));
        checkWild(new File(d, "*.???"));
        checkWild(new File(new File(d, "*.*"), "foo"));
    }

    private static void checkRelativePaths(int depth) throws Exception {
        checkCaseLookup();
        checkWildCards();
        // Make sure that an empty relative path is tested
        checkNames(1, true, userDir + File.separator, "");
        checkNames(depth, true, baseDir + File.separator,
                   relative + File.separator);
    }


    /* Pathnames with drive specifiers */

    private static char findInactiveDrive() {
        for (char d = 'Z'; d >= 'E'; d--) {
            File df = new File(d + ":\\");
            if (!df.exists()) {
                return d;
            }
        }
        throw new RuntimeException("Can't find an inactive drive");
    }

    private static char findActiveDrive() {
        for (char d = 'C'; d <= 'Z'; d--) {
            File df = new File(d + ":\\");
            if (df.exists()) return d;
        }
        throw new RuntimeException("Can't find an active drive");
    }

    private static void checkDrive(int depth, char drive, boolean exists)
        throws Exception
    {
        String d = drive + ":";
        File df = new File(d);
        String ans = exists ? df.getAbsolutePath() : d;
        if (!ans.endsWith("\\"))
            ans = ans + "\\";
        checkNames(depth, false, ans, d);
    }

    private static void checkDrivePaths(int depth) throws Exception {
        checkDrive(depth, findActiveDrive(), true);
        checkDrive(depth, findInactiveDrive(), false);
    }


    /* UNC pathnames */

    private static void checkUncPaths(int depth) throws Exception {
        String s = ("\\\\" + NONEXISTENT_UNC_HOST
                    + "\\" + NONEXISTENT_UNC_SHARE);
        ensureNon(s);
        checkSlashes(depth, false, s, s);

        s = "\\\\" + EXISTENT_UNC_HOST + "\\" + EXISTENT_UNC_SHARE;
        if (!(new File(s)).exists()) {
            System.err.println("WARNING: " + s +
                               " does not exist, unable to test UNC pathnames");
            return;
        }

        checkSlashes(depth, false, s, s);
    }


    public static void main(String[] args) throws Exception {
        if (File.separatorChar != '\\') {
            /* This test is only valid on win32 systems */
            return;
        }
        if (args.length > 0) debug = true;

        initTestData(3);

        checkRelativePaths(3);
        checkDrivePaths(2);
        checkUncPaths(2);
    }
}