| /* ==================================================================== |
| 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.poi.util; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| |
| import junit.framework.TestCase; |
| |
| /** |
| * @author Glen Stampoultzis (glens at apache.org) |
| * @author Marc Johnson (mjohnson at apache dot org) |
| */ |
| public final class TestHexDump extends TestCase { |
| |
| |
| private static char toHex(int n) { |
| return Character.toUpperCase(Character.forDigit(n & 0x0F, 16)); |
| } |
| |
| public void testDump() throws IOException { |
| byte[] testArray = new byte[ 256 ]; |
| |
| for (int j = 0; j < 256; j++) |
| { |
| testArray[ j ] = ( byte ) j; |
| } |
| ByteArrayOutputStream stream = new ByteArrayOutputStream(); |
| |
| HexDump.dump(testArray, 0, stream, 0); |
| byte[] outputArray = new byte[ 16 * (73 + HexDump.EOL.length()) ]; |
| |
| for (int j = 0; j < 16; j++) |
| { |
| int offset = (73 + HexDump.EOL.length()) * j; |
| |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) toHex(j); |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) ' '; |
| for (int k = 0; k < 16; k++) |
| { |
| outputArray[ offset++ ] = ( byte ) toHex(j); |
| outputArray[ offset++ ] = ( byte ) toHex(k); |
| outputArray[ offset++ ] = ( byte ) ' '; |
| } |
| for (int k = 0; k < 16; k++) |
| { |
| outputArray[ offset++ ] = ( byte ) toAscii((j * 16) + k); |
| } |
| System.arraycopy(HexDump.EOL.getBytes(), 0, outputArray, offset, |
| HexDump.EOL.getBytes().length); |
| } |
| byte[] actualOutput = stream.toByteArray(); |
| |
| assertEquals("array size mismatch", outputArray.length, |
| actualOutput.length); |
| for (int j = 0; j < outputArray.length; j++) |
| { |
| assertEquals("array[ " + j + "] mismatch", outputArray[ j ], |
| actualOutput[ j ]); |
| } |
| |
| // verify proper behavior with non-zero offset |
| stream = new ByteArrayOutputStream(); |
| HexDump.dump(testArray, 0x10000000, stream, 0); |
| outputArray = new byte[ 16 * (73 + HexDump.EOL.length()) ]; |
| for (int j = 0; j < 16; j++) |
| { |
| int offset = (73 + HexDump.EOL.length()) * j; |
| |
| outputArray[ offset++ ] = ( byte ) '1'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) toHex(j); |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) ' '; |
| for (int k = 0; k < 16; k++) |
| { |
| outputArray[ offset++ ] = ( byte ) toHex(j); |
| outputArray[ offset++ ] = ( byte ) toHex(k); |
| outputArray[ offset++ ] = ( byte ) ' '; |
| } |
| for (int k = 0; k < 16; k++) |
| { |
| outputArray[ offset++ ] = ( byte ) toAscii((j * 16) + k); |
| } |
| System.arraycopy(HexDump.EOL.getBytes(), 0, outputArray, offset, |
| HexDump.EOL.getBytes().length); |
| } |
| actualOutput = stream.toByteArray(); |
| assertEquals("array size mismatch", outputArray.length, |
| actualOutput.length); |
| for (int j = 0; j < outputArray.length; j++) |
| { |
| assertEquals("array[ " + j + "] mismatch", outputArray[ j ], |
| actualOutput[ j ]); |
| } |
| |
| // verify proper behavior with negative offset |
| stream = new ByteArrayOutputStream(); |
| HexDump.dump(testArray, 0xFF000000, stream, 0); |
| outputArray = new byte[ 16 * (73 + HexDump.EOL.length()) ]; |
| for (int j = 0; j < 16; j++) |
| { |
| int offset = (73 + HexDump.EOL.length()) * j; |
| |
| outputArray[ offset++ ] = ( byte ) 'F'; |
| outputArray[ offset++ ] = ( byte ) 'F'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) toHex(j); |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) ' '; |
| for (int k = 0; k < 16; k++) |
| { |
| outputArray[ offset++ ] = ( byte ) toHex(j); |
| outputArray[ offset++ ] = ( byte ) toHex(k); |
| outputArray[ offset++ ] = ( byte ) ' '; |
| } |
| for (int k = 0; k < 16; k++) |
| { |
| outputArray[ offset++ ] = ( byte ) toAscii((j * 16) + k); |
| } |
| System.arraycopy(HexDump.EOL.getBytes(), 0, outputArray, offset, |
| HexDump.EOL.getBytes().length); |
| } |
| actualOutput = stream.toByteArray(); |
| assertEquals("array size mismatch", outputArray.length, |
| actualOutput.length); |
| for (int j = 0; j < outputArray.length; j++) |
| { |
| assertEquals("array[ " + j + "] mismatch", outputArray[ j ], |
| actualOutput[ j ]); |
| } |
| |
| // verify proper behavior with non-zero index |
| stream = new ByteArrayOutputStream(); |
| HexDump.dump(testArray, 0x10000000, stream, 0x81); |
| outputArray = new byte[ (8 * (73 + HexDump.EOL.length())) - 1 ]; |
| for (int j = 0; j < 8; j++) |
| { |
| int offset = (73 + HexDump.EOL.length()) * j; |
| |
| outputArray[ offset++ ] = ( byte ) '1'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) '0'; |
| outputArray[ offset++ ] = ( byte ) toHex(j + 8); |
| outputArray[ offset++ ] = ( byte ) '1'; |
| outputArray[ offset++ ] = ( byte ) ' '; |
| for (int k = 0; k < 16; k++) |
| { |
| int index = 0x81 + (j * 16) + k; |
| |
| if (index < 0x100) |
| { |
| outputArray[ offset++ ] = ( byte ) toHex(index / 16); |
| outputArray[ offset++ ] = ( byte ) toHex(index); |
| } |
| else |
| { |
| outputArray[ offset++ ] = ( byte ) ' '; |
| outputArray[ offset++ ] = ( byte ) ' '; |
| } |
| outputArray[ offset++ ] = ( byte ) ' '; |
| } |
| for (int k = 0; k < 16; k++) |
| { |
| int index = 0x81 + (j * 16) + k; |
| |
| if (index < 0x100) |
| { |
| outputArray[ offset++ ] = ( byte ) toAscii(index); |
| } |
| } |
| System.arraycopy(HexDump.EOL.getBytes(), 0, outputArray, offset, |
| HexDump.EOL.getBytes().length); |
| } |
| actualOutput = stream.toByteArray(); |
| assertEquals("array size mismatch", outputArray.length, |
| actualOutput.length); |
| for (int j = 0; j < outputArray.length; j++) |
| { |
| assertEquals("array[ " + j + "] mismatch", outputArray[ j ], |
| actualOutput[ j ]); |
| } |
| |
| // verify proper behavior with negative index |
| try |
| { |
| HexDump.dump(testArray, 0x10000000, new ByteArrayOutputStream(), -1); |
| fail("should have caught ArrayIndexOutOfBoundsException on negative index"); |
| } |
| catch (ArrayIndexOutOfBoundsException ignored_exception) |
| { |
| |
| // as expected |
| } |
| |
| // verify proper behavior with index that is too large |
| try |
| { |
| HexDump.dump(testArray, 0x10000000, new ByteArrayOutputStream(), |
| testArray.length); |
| fail("should have caught ArrayIndexOutOfBoundsException on large index"); |
| } |
| catch (ArrayIndexOutOfBoundsException ignored_exception) |
| { |
| |
| // as expected |
| } |
| |
| // verify proper behavior with null stream |
| try |
| { |
| HexDump.dump(testArray, 0x10000000, null, 0); |
| fail("should have caught IllegalArgumentException on negative index"); |
| } |
| catch (IllegalArgumentException ignored_exception) |
| { |
| |
| // as expected |
| } |
| |
| // verify proper behaviour with empty byte array |
| ByteArrayOutputStream os = new ByteArrayOutputStream( ); |
| HexDump.dump( new byte[0], 0, os, 0 ); |
| assertEquals( "No Data" + System.getProperty( "line.separator"), os.toString() ); |
| |
| } |
| |
| public void testToHex() { |
| assertEquals("000A", HexDump.toHex((short)0xA)); |
| assertEquals("0A", HexDump.toHex((byte)0xA)); |
| assertEquals("0000000A", HexDump.toHex(0xA)); |
| |
| assertEquals("FFFF", HexDump.toHex((short)0xFFFF)); |
| |
| confirmStr("0xFE", HexDump.byteToHex(-2)); |
| confirmStr("0x25", HexDump.byteToHex(37)); |
| confirmStr("0xFFFE", HexDump.shortToHex(-2)); |
| confirmStr("0x0005", HexDump.shortToHex(5)); |
| confirmStr("0xFFFFFF9C", HexDump.intToHex(-100)); |
| confirmStr("0x00001001", HexDump.intToHex(4097)); |
| confirmStr("0xFFFFFFFFFFFF0006", HexDump.longToHex(-65530)); |
| confirmStr("0x0000000000003FCD", HexDump.longToHex(16333)); |
| } |
| |
| private static void confirmStr(String expected, char[] actualChars) { |
| assertEquals(expected, new String(actualChars)); |
| } |
| |
| private static char toAscii(int c) { |
| char rval = '.'; |
| |
| if (c >= 32 && c <= 126) { |
| rval = ( char ) c; |
| } |
| return rval; |
| } |
| } |