| /* |
| * Copyright 2013, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.jf.util; |
| |
| import com.google.common.base.Strings; |
| import com.google.common.io.Files; |
| import junit.framework.Assert; |
| import org.junit.Test; |
| |
| import java.io.File; |
| import java.nio.charset.Charset; |
| |
| public class ClassFileNameHandlerTest { |
| private final Charset UTF8 = Charset.forName("UTF-8"); |
| |
| @Test |
| public void test1ByteEncodings() { |
| StringBuilder sb = new StringBuilder(); |
| for (int i=0; i<100; i++) { |
| sb.append((char)i); |
| } |
| |
| String result = ClassFileNameHandler.shortenPathComponent(sb.toString(), 5); |
| Assert.assertEquals(95, result.getBytes(UTF8).length); |
| Assert.assertEquals(95, result.length()); |
| } |
| |
| @Test |
| public void test2ByteEncodings() { |
| StringBuilder sb = new StringBuilder(); |
| for (int i=0x80; i<0x80+100; i++) { |
| sb.append((char)i); |
| } |
| |
| // remove a total of 3 2-byte characters, and then add back in the 1-byte '#' |
| String result = ClassFileNameHandler.shortenPathComponent(sb.toString(), 4); |
| Assert.assertEquals(200, sb.toString().getBytes(UTF8).length); |
| Assert.assertEquals(195, result.getBytes(UTF8).length); |
| Assert.assertEquals(98, result.length()); |
| |
| // remove a total of 3 2-byte characters, and then add back in the 1-byte '#' |
| result = ClassFileNameHandler.shortenPathComponent(sb.toString(), 5); |
| Assert.assertEquals(200, sb.toString().getBytes(UTF8).length); |
| Assert.assertEquals(195, result.getBytes(UTF8).length); |
| Assert.assertEquals(98, result.length()); |
| } |
| |
| @Test |
| public void test3ByteEncodings() { |
| StringBuilder sb = new StringBuilder(); |
| for (int i=0x800; i<0x800+100; i++) { |
| sb.append((char)i); |
| } |
| |
| // remove a total of 3 3-byte characters, and then add back in the 1-byte '#' |
| String result = ClassFileNameHandler.shortenPathComponent(sb.toString(), 6); |
| Assert.assertEquals(300, sb.toString().getBytes(UTF8).length); |
| Assert.assertEquals(292, result.getBytes(UTF8).length); |
| Assert.assertEquals(98, result.length()); |
| |
| // remove a total of 3 3-byte characters, and then add back in the 1-byte '#' |
| result = ClassFileNameHandler.shortenPathComponent(sb.toString(), 7); |
| Assert.assertEquals(300, sb.toString().getBytes(UTF8).length); |
| Assert.assertEquals(292, result.getBytes(UTF8).length); |
| Assert.assertEquals(98, result.length()); |
| } |
| |
| @Test |
| public void test4ByteEncodings() { |
| StringBuilder sb = new StringBuilder(); |
| for (int i=0x10000; i<0x10000+100; i++) { |
| sb.appendCodePoint(i); |
| } |
| |
| // we remove 3 codepoints == 6 characters == 12 bytes, and then add back in the 1-byte '#' |
| String result = ClassFileNameHandler.shortenPathComponent(sb.toString(), 8); |
| Assert.assertEquals(400, sb.toString().getBytes(UTF8).length); |
| Assert.assertEquals(389, result.getBytes(UTF8).length); |
| Assert.assertEquals(195, result.length()); |
| |
| // we remove 2 codepoints == 4 characters == 8 bytes, and then add back in the 1-byte '#' |
| result = ClassFileNameHandler.shortenPathComponent(sb.toString(), 7); |
| Assert.assertEquals(400, sb.toString().getBytes(UTF8).length); |
| Assert.assertEquals(393, result.getBytes(UTF8).length); |
| Assert.assertEquals(197, result.length()); |
| } |
| |
| @Test |
| public void testMultipleLongNames() { |
| String filenameFragment = Strings.repeat("a", 512); |
| |
| File tempDir = Files.createTempDir(); |
| ClassFileNameHandler handler = new ClassFileNameHandler(tempDir, ".smali"); |
| |
| // put the differentiating character in the middle, where it will get stripped out by the filename shortening |
| // logic |
| File file1 = handler.getUniqueFilenameForClass("La/a/" + filenameFragment + "1" + filenameFragment + ";"); |
| checkFilename(tempDir, file1, "a", "a", Strings.repeat("a", 124) + "#" + Strings.repeat("a", 118) + ".smali"); |
| |
| File file2 = handler.getUniqueFilenameForClass("La/a/" + filenameFragment + "2" + filenameFragment + ";"); |
| checkFilename(tempDir, file2, "a", "a", Strings.repeat("a", 124) + "#" + Strings.repeat("a", 118) + ".1.smali"); |
| |
| Assert.assertFalse(file1.getAbsolutePath().equals(file2.getAbsolutePath())); |
| } |
| |
| @Test |
| public void testBasicFunctionality() { |
| File tempDir = Files.createTempDir(); |
| ClassFileNameHandler handler = new ClassFileNameHandler(tempDir, ".smali"); |
| |
| File file = handler.getUniqueFilenameForClass("La/b/c/d;"); |
| checkFilename(tempDir, file, "a", "b", "c", "d.smali"); |
| |
| file = handler.getUniqueFilenameForClass("La/b/c/e;"); |
| checkFilename(tempDir, file, "a", "b", "c", "e.smali"); |
| |
| file = handler.getUniqueFilenameForClass("La/b/d/d;"); |
| checkFilename(tempDir, file, "a", "b", "d", "d.smali"); |
| |
| file = handler.getUniqueFilenameForClass("La/b;"); |
| checkFilename(tempDir, file, "a", "b.smali"); |
| |
| file = handler.getUniqueFilenameForClass("Lb;"); |
| checkFilename(tempDir, file, "b.smali"); |
| } |
| |
| @Test |
| public void testCaseInsensitiveFilesystem() { |
| File tempDir = Files.createTempDir(); |
| ClassFileNameHandler handler = new ClassFileNameHandler(tempDir, ".smali", false, false); |
| |
| File file = handler.getUniqueFilenameForClass("La/b/c;"); |
| checkFilename(tempDir, file, "a", "b", "c.smali"); |
| |
| file = handler.getUniqueFilenameForClass("La/b/C;"); |
| checkFilename(tempDir, file, "a", "b", "C.1.smali"); |
| |
| file = handler.getUniqueFilenameForClass("La/B/c;"); |
| checkFilename(tempDir, file, "a", "B.1", "c.smali"); |
| } |
| |
| @Test |
| public void testCaseSensitiveFilesystem() { |
| File tempDir = Files.createTempDir(); |
| ClassFileNameHandler handler = new ClassFileNameHandler(tempDir, ".smali", true, false); |
| |
| File file = handler.getUniqueFilenameForClass("La/b/c;"); |
| checkFilename(tempDir, file, "a", "b", "c.smali"); |
| |
| file = handler.getUniqueFilenameForClass("La/b/C;"); |
| checkFilename(tempDir, file, "a", "b", "C.smali"); |
| |
| file = handler.getUniqueFilenameForClass("La/B/c;"); |
| checkFilename(tempDir, file, "a", "B", "c.smali"); |
| } |
| |
| @Test |
| public void testWindowsReservedFilenames() { |
| File tempDir = Files.createTempDir(); |
| ClassFileNameHandler handler = new ClassFileNameHandler(tempDir, ".smali", false, true); |
| |
| File file = handler.getUniqueFilenameForClass("La/con/c;"); |
| checkFilename(tempDir, file, "a", "con#", "c.smali"); |
| |
| file = handler.getUniqueFilenameForClass("La/Con/c;"); |
| checkFilename(tempDir, file, "a", "Con#.1", "c.smali"); |
| |
| file = handler.getUniqueFilenameForClass("La/b/PRN;"); |
| checkFilename(tempDir, file, "a", "b", "PRN#.smali"); |
| |
| file = handler.getUniqueFilenameForClass("La/b/prN;"); |
| checkFilename(tempDir, file, "a", "b", "prN#.1.smali"); |
| |
| file = handler.getUniqueFilenameForClass("La/b/com0;"); |
| checkFilename(tempDir, file, "a", "b", "com0.smali"); |
| |
| for (String reservedName: new String[] {"con", "prn", "aux", "nul", "com1", "com9", "lpt1", "lpt9"}) { |
| file = handler.getUniqueFilenameForClass("L" + reservedName + ";"); |
| checkFilename(tempDir, file, reservedName +"#.smali"); |
| } |
| } |
| |
| @Test |
| public void testIgnoringWindowsReservedFilenames() { |
| File tempDir = Files.createTempDir(); |
| ClassFileNameHandler handler = new ClassFileNameHandler(tempDir, ".smali", true, false); |
| |
| File file = handler.getUniqueFilenameForClass("La/con/c;"); |
| checkFilename(tempDir, file, "a", "con", "c.smali"); |
| |
| file = handler.getUniqueFilenameForClass("La/Con/c;"); |
| checkFilename(tempDir, file, "a", "Con", "c.smali"); |
| |
| file = handler.getUniqueFilenameForClass("La/b/PRN;"); |
| checkFilename(tempDir, file, "a", "b", "PRN.smali"); |
| |
| file = handler.getUniqueFilenameForClass("La/b/prN;"); |
| checkFilename(tempDir, file, "a", "b", "prN.smali"); |
| |
| file = handler.getUniqueFilenameForClass("La/b/com0;"); |
| checkFilename(tempDir, file, "a", "b", "com0.smali"); |
| |
| for (String reservedName: new String[] {"con", "prn", "aux", "nul", "com1", "com9", "lpt1", "lpt9"}) { |
| file = handler.getUniqueFilenameForClass("L" + reservedName + ";"); |
| checkFilename(tempDir, file, reservedName +".smali"); |
| } |
| } |
| |
| private void checkFilename(File base, File file, String... elements) { |
| for (int i=elements.length-1; i>=0; i--) { |
| Assert.assertEquals(elements[i], file.getName()); |
| file = file.getParentFile(); |
| } |
| Assert.assertEquals(base.getAbsolutePath(), file.getAbsolutePath()); |
| } |
| } |