/* ====================================================================
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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.hssf.record.common;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import junit.framework.TestCase;
import org.apache.poi.hssf.record.ContinueRecord;
import org.apache.poi.hssf.record.RecordInputStream;
import org.apache.poi.hssf.record.SSTRecord;
import org.apache.poi.hssf.record.common.UnicodeString.ExtRst;
import org.apache.poi.hssf.record.common.UnicodeString.FormatRun;
import org.apache.poi.hssf.record.cont.ContinuableRecordOutput;
import org.apache.poi.util.LittleEndianInputStream;
import org.apache.poi.util.LittleEndianOutputStream;
/**
* Tests that {@link UnicodeString} record size calculates correctly. The record size
* is used when serializing {@link SSTRecord}s.
*
* @author Jason Height (jheight at apache.org)
*/
public final class TestUnicodeString extends TestCase {
private static final int MAX_DATA_SIZE = RecordInputStream.MAX_RECORD_DATA_SIZE;
/** a 4 character string requiring 16 bit encoding */
private static final String STR_16_BIT = "A\u591A\u8A00\u8A9E";
private static void confirmSize(int expectedSize, UnicodeString s) {
confirmSize(expectedSize, s, 0);
}
/**
* Note - a value of zero for <tt>amountUsedInCurrentRecord</tt> would only ever occur just
* after a {@link ContinueRecord} had been started. In the initial {@link SSTRecord} this
* value starts at 8 (for the first {@link UnicodeString} written). In general, it can be
* any value between 0 and {@link #MAX_DATA_SIZE}
*/
private static void confirmSize(int expectedSize, UnicodeString s, int amountUsedInCurrentRecord) {
ContinuableRecordOutput out = ContinuableRecordOutput.createForCountingOnly();
out.writeContinue();
for(int i=amountUsedInCurrentRecord; i>0; i--) {
out.writeByte(0);
}
int size0 = out.getTotalSize();
s.serialize(out);
int size1 = out.getTotalSize();
int actualSize = size1-size0;
assertEquals(expectedSize, actualSize);
}
public void testSmallStringSize() {
//Test a basic string
UnicodeString s = makeUnicodeString("Test");
confirmSize(7, s);
//Test a small string that is uncompressed
s = makeUnicodeString(STR_16_BIT);
s.setOptionFlags((byte)0x01);
confirmSize(11, s);
//Test a compressed small string that has rich text formatting
s.setString("Test");
s.setOptionFlags((byte)0x8);
UnicodeString.FormatRun r = new UnicodeString.FormatRun((short)0,(short)1);
s.addFormatRun(r);
UnicodeString.FormatRun r2 = new UnicodeString.FormatRun((short)2,(short)2);
s.addFormatRun(r2);
confirmSize(17, s);
//Test a uncompressed small string that has rich text formatting
s.setString(STR_16_BIT);
s.setOptionFlags((byte)0x9);
confirmSize(21, s);
//Test a compressed small string that has rich text and extended text
s.setString("Test");
s.setOptionFlags((byte)0xC);
confirmSize(17, s);
// Extended phonetics data
// Minimum size is 14
// Also adds 4 bytes to hold the length
s.setExtendedRst(
new ExtRst()
);
confirmSize(35, s);
//Test a uncompressed small string that has rich text and extended text
s.setString(STR_16_BIT);
s.setOptionFlags((byte)0xD);
confirmSize(39, s);
s.setExtendedRst(null);
confirmSize(21, s);
}
public void testPerfectStringSize() {
//Test a basic string
UnicodeString s = makeUnicodeString(MAX_DATA_SIZE-2-1);
confirmSize(MAX_DATA_SIZE, s);
//Test an uncompressed string
//Note that we can only ever get to a maximim size of 8227 since an uncompressed
//string is writing double bytes.
s = makeUnicodeString((MAX_DATA_SIZE-2-1)/2, true);
s.setOptionFlags((byte)0x1);
confirmSize(MAX_DATA_SIZE-1, s);
}
public void testPerfectRichStringSize() {
//Test a rich text string
UnicodeString s = makeUnicodeString(MAX_DATA_SIZE-2-1-8-2);
s.addFormatRun(new UnicodeString.FormatRun((short)1,(short)0));
s.addFormatRun(new UnicodeString.FormatRun((short)2,(short)1));
s.setOptionFlags((byte)0x8);
confirmSize(MAX_DATA_SIZE, s);
//Test an uncompressed rich text string
//Note that we can only ever get to a maximum size of 8227 since an uncompressed
//string is writing double bytes.
s = makeUnicodeString((MAX_DATA_SIZE-2-1-8-2)/2, true);
s.addFormatRun(new UnicodeString.FormatRun((short)1,(short)0));
s.addFormatRun(new UnicodeString.FormatRun((short)2,(short)1));
s.setOptionFlags((byte)0x9);
confirmSize(MAX_DATA_SIZE-1, s);
}
public void testContinuedStringSize() {
//Test a basic string
UnicodeString s = makeUnicodeString(MAX_DATA_SIZE-2-1+20);
confirmSize(MAX_DATA_SIZE+4+1+20, s);
}
/** Tests that a string size calculation that fits neatly in two records, the second being a continue*/
public void testPerfectContinuedStringSize() {
//Test a basic string
int strSize = MAX_DATA_SIZE*2;
//String overhead
strSize -= 3;
//Continue Record overhead
strSize -= 4;
//Continue Record additional byte overhead
strSize -= 1;
UnicodeString s = makeUnicodeString(strSize);
confirmSize(MAX_DATA_SIZE*2, s);
}
public void testFormatRun() throws Exception {
FormatRun fr = new FormatRun((short)4, (short)0x15c);
assertEquals(4, fr.getCharacterPos());
assertEquals(0x15c, fr.getFontIndex());
ByteArrayOutputStream baos = new ByteArrayOutputStream();
LittleEndianOutputStream out = new LittleEndianOutputStream(baos);
fr.serialize(out);
byte[] b = baos.toByteArray();
assertEquals(4, b.length);
assertEquals(4, b[0]);
assertEquals(0, b[1]);
assertEquals(0x5c, b[2]);
assertEquals(0x01, b[3]);
LittleEndianInputStream inp = new LittleEndianInputStream(
new ByteArrayInputStream(b)
);
fr = new FormatRun(inp);
assertEquals(4, fr.getCharacterPos());
assertEquals(0x15c, fr.getFontIndex());
}
public void testExtRstFromEmpty() throws Exception {
ExtRst ext = new ExtRst();
assertEquals(0, ext.getNumberOfRuns());
assertEquals(0, ext.getFormattingFontIndex());
assertEquals(0, ext.getFormattingOptions());
assertEquals("", ext.getPhoneticText());
assertEquals(0, ext.getPhRuns().length);
assertEquals(10, ext.getDataSize()); // Excludes 4 byte header
ByteArrayOutputStream baos = new ByteArrayOutputStream();
LittleEndianOutputStream out = new LittleEndianOutputStream(baos);
ContinuableRecordOutput cout = new ContinuableRecordOutput(out, 0xffff);
ext.serialize(cout);
cout.writeContinue();
byte[] b = baos.toByteArray();
assertEquals(20, b.length);
// First 4 bytes from the outputstream
assertEquals(-1, b[0]);
assertEquals(-1, b[1]);
assertEquals(14, b[2]);
assertEquals(00, b[3]);
// Reserved
assertEquals(1, b[4]);
assertEquals(0, b[5]);
// Data size
assertEquals(10, b[6]);
assertEquals(00, b[7]);
// Font*2
assertEquals(0, b[8]);
assertEquals(0, b[9]);
assertEquals(0, b[10]);
assertEquals(0, b[11]);
// 0 Runs
assertEquals(0, b[12]);
assertEquals(0, b[13]);
// Size=0, *2
assertEquals(0, b[14]);
assertEquals(0, b[15]);
assertEquals(0, b[16]);
assertEquals(0, b[17]);
// Last 2 bytes from the outputstream
assertEquals(ContinueRecord.sid, b[18]);
assertEquals(0, b[19]);
// Load in again and re-test
byte[] data = new byte[14];
System.arraycopy(b, 4, data, 0, data.length);
LittleEndianInputStream inp = new LittleEndianInputStream(
new ByteArrayInputStream(data)
);
ext = new ExtRst(inp, data.length);
assertEquals(0, ext.getNumberOfRuns());
assertEquals(0, ext.getFormattingFontIndex());
assertEquals(0, ext.getFormattingOptions());
assertEquals("", ext.getPhoneticText());
assertEquals(0, ext.getPhRuns().length);
}
public void testExtRstFromData() throws Exception {
byte[] data = new byte[] {
01, 00, 0x0C, 00,
00, 00, 0x37, 00,
00, 00,
00, 00, 00, 00,
00, 00 // Cruft at the end, as found from real files
};
assertEquals(16, data.length);
LittleEndianInputStream inp = new LittleEndianInputStream(
new ByteArrayInputStream(data)
);
ExtRst ext = new ExtRst(inp, data.length);
assertEquals(0x0c, ext.getDataSize()); // Excludes 4 byte header
assertEquals(0, ext.getNumberOfRuns());
assertEquals(0x37, ext.getFormattingOptions());
assertEquals(0, ext.getFormattingFontIndex());
assertEquals("", ext.getPhoneticText());
assertEquals(0, ext.getPhRuns().length);
}
public void testCorruptExtRstDetection() throws Exception {
byte[] data = new byte[] {
0x79, 0x79, 0x11, 0x11,
0x22, 0x22, 0x33, 0x33,
};
assertEquals(8, data.length);
LittleEndianInputStream inp = new LittleEndianInputStream(
new ByteArrayInputStream(data)
);
ExtRst ext = new ExtRst(inp, data.length);
// Will be empty
assertEquals(ext, new ExtRst());
// If written, will be the usual size
assertEquals(10, ext.getDataSize()); // Excludes 4 byte header
// Is empty
assertEquals(0, ext.getNumberOfRuns());
assertEquals(0, ext.getFormattingOptions());
assertEquals(0, ext.getFormattingFontIndex());
assertEquals("", ext.getPhoneticText());
assertEquals(0, ext.getPhRuns().length);
}
private static UnicodeString makeUnicodeString(String s) {
UnicodeString st = new UnicodeString(s);
st.setOptionFlags((byte)0);
return st;
}
private static UnicodeString makeUnicodeString(int numChars) {
return makeUnicodeString(numChars, false);
}
/**
* @param is16Bit if <code>true</code> the created string will have characters > 0x00FF
* @return a string of the specified number of characters
*/
private static UnicodeString makeUnicodeString(int numChars, boolean is16Bit) {
StringBuffer b = new StringBuffer(numChars);
int charBase = is16Bit ? 0x8A00 : 'A';
for (int i=0;i<numChars;i++) {
char ch = (char) ((i%16)+charBase);
b.append(ch);
}
return makeUnicodeString(b.toString());
}
}