104 lines
3.6 KiB
Java
104 lines
3.6 KiB
Java
/*
|
|
* Copyright (c) 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 8011128
|
|
* @summary Test file and directory name limits. This test is primarily
|
|
* intended to test Files.createDirectory on resolved paths at or around
|
|
* the short path limit of 248 on Windows.
|
|
*/
|
|
|
|
import java.io.IOException;
|
|
import java.nio.file.Files;
|
|
import java.nio.file.Path;
|
|
import java.nio.file.Paths;
|
|
|
|
public class NameLimits {
|
|
|
|
static final int MAX_PATH = 255;
|
|
static final int MIN_PATH = 8; // arbitrarily chosen
|
|
|
|
static Path generatePath(int len) {
|
|
if (len < MIN_PATH)
|
|
throw new RuntimeException("Attempting to generate path less than MIN_PATH");
|
|
StringBuilder sb = new StringBuilder(len);
|
|
sb.append("name");
|
|
while (sb.length() < len) {
|
|
sb.append('X');
|
|
}
|
|
return Paths.get(sb.toString());
|
|
}
|
|
|
|
static boolean tryCreateFile(int len) throws IOException {
|
|
Path name = generatePath(len);
|
|
try {
|
|
Files.createFile(name);
|
|
} catch (IOException ioe) {
|
|
System.err.format("Unable to create file of length %d (full path %d), %s%n",
|
|
name.toString().length(), name.toAbsolutePath().toString().length(), ioe);
|
|
return false;
|
|
}
|
|
Files.delete(name);
|
|
return true;
|
|
}
|
|
|
|
static boolean tryCreateDirectory(int len) throws IOException {
|
|
Path name = generatePath(len);
|
|
try {
|
|
Files.createDirectory(name);
|
|
} catch (IOException ioe) {
|
|
System.err.format("Unable to create directory of length %d (full path %d), %s%n",
|
|
name.toString().length(), name.toAbsolutePath().toString().length(), ioe);
|
|
return false;
|
|
}
|
|
Files.delete(name);
|
|
return true;
|
|
}
|
|
|
|
public static void main(String[] args) throws Exception {
|
|
int len;
|
|
|
|
// find the maximum file name if MAX_PATH or less
|
|
len = MAX_PATH;
|
|
while (!tryCreateFile(len)) {
|
|
len--;
|
|
}
|
|
System.out.format("Testing createFile on paths %d .. %d%n", MIN_PATH, len);
|
|
while (len >= MIN_PATH) {
|
|
if (!tryCreateFile(len--))
|
|
throw new RuntimeException("Test failed");
|
|
}
|
|
|
|
// find the maximum directory name if MAX_PATH or less
|
|
len = MAX_PATH;
|
|
while (!tryCreateDirectory(len)) {
|
|
len--;
|
|
}
|
|
System.out.format("Testing createDirectory on paths %d .. %d%n", MIN_PATH, len);
|
|
while (len >= MIN_PATH) {
|
|
if (!tryCreateDirectory(len--))
|
|
throw new RuntimeException("Test failed");
|
|
}
|
|
}
|
|
}
|