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Get UUID from ClassID 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1874989 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Andreas Beeker 2020-03-08 23:20:44 +00:00
parent 199895bfc4
commit ef90a5f2c8
2 changed files with 65 additions and 89 deletions
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36
src/java/org/apache/poi/hpsf/ClassID.java
View File

@ -17,9 +17,11 @@
package org.apache.poi.hpsf;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.Locale;
import java.util.UUID;
import org.apache.commons.codec.binary.Hex;
import org.apache.poi.common.Duplicatable;
import org.apache.poi.util.LittleEndianInput;
import org.apache.poi.util.LittleEndianOutput;
@ -184,6 +186,7 @@ public class ClassID implements Duplicatable {
* @param offset The offset within the {@code src} byte array
* @return A byte array containing the class ID.
*/
@SuppressWarnings("PointlessArithmeticExpression")
public byte[] read(final byte[] src, final int offset) {
/* Read double word. */
bytes[0] = src[3 + offset];
@ -215,6 +218,7 @@ public class ClassID implements Duplicatable {
* @exception ArrayStoreException if there is not enough room for the class
* ID 16 bytes in the byte array after the {@code offset} position.
*/
@SuppressWarnings("PointlessArithmeticExpression")
public void write(final byte[] dst, final int offset)
throws ArrayStoreException {
/* Check array size: */
@ -310,14 +314,32 @@ public class ClassID implements Duplicatable {
*/
@Override
public String toString() {
String hex = Hex.encodeHexString(bytes, false);
return "{" + hex.substring(0,8) +
"-" + hex.substring(8,12) +
"-" + hex.substring(12,16) +
"-" + hex.substring(16,20) +
"-" + hex.substring(20) + "}";
return "{" + toUUIDString() + "}";
}
/**
* Returns a human-readable representation of the Class ID in UUID
* format {@code "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"}.
*
* @return UUID String representation of the Class ID represented by this object.
*/
public String toUUIDString() {
return toUUID().toString().toUpperCase(Locale.ROOT);
}
/**
* Converts the ClassID to an UUID
* @return the ClassID as UUID
*
* @since POI 4.1.3
*/
public UUID toUUID() {
final long mostSigBits = ByteBuffer.wrap(bytes, 0, 8).getLong();
final long leastSigBits = ByteBuffer.wrap(bytes, 8, 8).getLong();
return new UUID(mostSigBits, leastSigBits);
}
@Override
public ClassID copy() {
return new ClassID(this);

118
src/testcases/org/apache/poi/hpsf/basic/TestClassID.java
View File

@ -17,113 +17,67 @@
package org.apache.poi.hpsf.basic;
import java.util.Locale;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;
import org.apache.poi.hpsf.ClassID;
import org.apache.poi.hpsf.DocumentSummaryInformation;
import org.apache.poi.hpsf.PropertySet;
import org.apache.poi.hpsf.SummaryInformation;
import org.apache.poi.hpsf.ClassIDPredefined;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertTrue;
/**
* <p>Tests ClassID structure.</p>
*
* @author Michael Zalewski (zalewski@optonline.net)
* Tests ClassID structure.
*/
public final class TestClassID {
private static final byte[] BUF16 = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16};
/**
* Various tests of overridden .equals()
*/
@Test
public void testEquals() {
ClassID clsidTest1 = new ClassID(
new byte[] {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10}
, 0
);
ClassID clsidTest2 = new ClassID(
new byte[] {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10}
, 0
);
ClassID clsidTest3 = new ClassID(
new byte[] {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x11 }
, 0
);
ClassID clsidTest1 = new ClassID(BUF16, 0);
ClassID clsidTest2 = new ClassID(BUF16, 0);
byte[] buf2 = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,17};
ClassID clsidTest3 = new ClassID(buf2, 0);
assertEquals(clsidTest1, clsidTest1);
assertEquals(clsidTest1, clsidTest2);
assertNotEquals(clsidTest1, clsidTest3);
assertNotEquals(null, clsidTest1);
}
/**
* Try to write to a buffer that is too small. This should
* throw an Exception
*/
@Test
public void testWriteArrayStoreException() {
ClassID clsidTest = new ClassID(
new byte[] {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10}
, 0
);
boolean bExceptionOccurred = false;
try
{
clsidTest.write(new byte[15], 0);
}
catch (Exception e)
{
bExceptionOccurred = true;
}
assertTrue(bExceptionOccurred);
bExceptionOccurred = false;
try
{
clsidTest.write(new byte[16], 1);
}
catch (Exception e)
{
bExceptionOccurred = true;
}
assertTrue(bExceptionOccurred);
// These should work without throwing an Exception
bExceptionOccurred = false;
try
{
clsidTest.write(new byte[16], 0);
clsidTest.write(new byte[17], 1);
}
catch (Exception e)
{
bExceptionOccurred = true;
}
assertFalse(bExceptionOccurred);
@Test(expected = ArrayStoreException.class)
public void testWriteArrayStoreException1() {
new ClassID(BUF16, 0).write(new byte[15], 0);
}
@Test(expected = ArrayIndexOutOfBoundsException.class)
public void testWriteArrayStoreException2() {
new ClassID(BUF16, 0).write(new byte[16], 1);
}
@Test
public void testWriteArrayStoreException3() {
ClassID clsidTest = new ClassID(BUF16, 0);
clsidTest.write(new byte[16], 0);
clsidTest.write(new byte[17], 1);
}
/**
* <p>Tests the {@link PropertySet} methods. The test file has two
* property set: the first one is a {@link SummaryInformation},
* the second one is a {@link DocumentSummaryInformation}.</p>
*/
@Test
public void testClassID() {
ClassID clsidTest = new ClassID(
new byte[] {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10}
, 0
);
assertEquals(clsidTest.toString().toUpperCase(Locale.ROOT),
"{04030201-0605-0807-090A-0B0C0D0E0F10}"
);
ClassID clsidTest = new ClassID(BUF16, 0);
assertEquals("{04030201-0605-0807-090A-0B0C0D0E0F10}", clsidTest.toString());
}
@Test
public void checkUUIDConversion() {
String exp = "EABCECDB-CC1C-4A6F-B4E3-7F888A5ADFC8";
ClassID clsId = ClassIDPredefined.EXCEL_V14_ODS.getClassID();
assertEquals(exp, clsId.toUUIDString());
assertEquals(exp, clsId.toUUID().toString().toUpperCase());
}
}