/*******************************************************************************
* Copyright (c) 2004, 2008 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.css.tests.encoding.css;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CodingErrorAction;
import junit.framework.TestCase;
import org.eclipse.wst.css.core.internal.contenttype.CSSResourceEncodingDetector;
import org.eclipse.wst.css.tests.encoding.CSSEncodingTestsPlugin;
import org.eclipse.wst.sse.core.internal.encoding.EncodingMemento;
import org.eclipse.wst.sse.core.internal.encoding.IResourceCharsetDetector;
public class CSSEncodingTester extends TestCase {
/**
* Ensures that an InputStream has mark/reset support.
*/
private static InputStream getMarkSupportedStream(InputStream original) {
if (original == null)
return null;
if (original.markSupported())
return original;
return new BufferedInputStream(original);
}
private boolean DEBUG = false;
private final String fileDir = "css/";
// private final String pluginLocation =
// TestsPlugin.getInstallLocation().toString();
private final String fileHome = "testfiles/";
private final String fileLocation = fileHome + fileDir;
private int READ_BUFFER_SIZE = 8000;
private void doTestFileStream(String filename, String expectedIANAEncoding, IResourceCharsetDetector detector) throws IOException {
File file = CSSEncodingTestsPlugin.getTestFile(filename);
if (!file.exists())
throw new IllegalArgumentException(filename + " was not found");
InputStream inputStream = new FileInputStream(file);
// InputStream inStream = getClass().getResourceAsStream(filename);
InputStream istream = getMarkSupportedStream(inputStream);
try {
detector.set(istream);
EncodingMemento encodingMemento = ((CSSResourceEncodingDetector)detector).getEncodingMemento();
String foundIANAEncoding = null;
if (encodingMemento != null) {
foundIANAEncoding = encodingMemento.getDetectedCharsetName();
}
// I changed many "equals" to "equalsIgnoreCase" on 11/4/2002,
// since
// some issues with SHIFT_JIS vs. Shift_JIS were causing failures.
// We do want to be tolerant on input, and accept either, but I
// think
// that SupportedJavaEncodings needs to be changed to "recommend"
// Shift_JIS.
boolean expectedIANAResult = false;
if (expectedIANAEncoding == null) {
expectedIANAResult = expectedIANAEncoding == foundIANAEncoding;
}
else {
expectedIANAResult = expectedIANAEncoding.equalsIgnoreCase(foundIANAEncoding);
}
assertTrue("encoding test file " + filename + " expected: " + expectedIANAEncoding + " found: " + foundIANAEncoding, expectedIANAResult);
// a very simple read test ... will cause JUnit error (not fail)
// if
// throws exception.
if (foundIANAEncoding != null) {
ensureCanRead(filename, foundIANAEncoding, istream);
}
}
finally {
if (istream != null) {
istream.close();
}
if (inputStream != null) {
inputStream.close();
}
}
}
/**
* This method just reads to stream, to be sure it can be read per
* encoding, without exception.
*/
private void ensureCanRead(String filename, String encoding, InputStream inputStream) throws IOException {
Charset charset = Charset.forName(encoding);
CharsetDecoder charsetDecoder = charset.newDecoder();
charsetDecoder.onMalformedInput(CodingErrorAction.REPORT);
charsetDecoder.onUnmappableCharacter(CodingErrorAction.REPORT);
InputStreamReader reader = new InputStreamReader(inputStream, charsetDecoder);
StringBuffer stringBuffer = readInputStream(reader);
if (DEBUG) {
System.out.println();
System.out.println(filename);
System.out.println(stringBuffer.toString());
}
}
private StringBuffer readInputStream(Reader reader) throws IOException {
StringBuffer buffer = new StringBuffer();
int numRead = 0;
char tBuff[] = new char[READ_BUFFER_SIZE];
while ((numRead = reader.read(tBuff, 0, tBuff.length)) != -1) {
buffer.append(tBuff, 0, numRead);
}
return buffer;
}
public void testBestCase() throws IOException {
String filename = fileLocation + "nonStandard.css";
doTestFileStream(filename, "ISO-8859-6", new CSSResourceEncodingDetector());
}
public void testEmptyFile() throws IOException {
String filename = fileLocation + "emptyFile.css";
doTestFileStream(filename, null, new CSSResourceEncodingDetector());
}
public void testEUCJP() throws IOException {
String filename = fileLocation + "encoding_test_eucjp.css";
doTestFileStream(filename, "EUC-JP", new CSSResourceEncodingDetector());
}
public void testJIS() throws IOException {
String filename = fileLocation + "encoding_test_jis.css";
doTestFileStream(filename, "ISO-2022-JP", new CSSResourceEncodingDetector());
}
public void testNoEncoding() throws IOException {
String filename = fileLocation + "noEncoding.css";
doTestFileStream(filename, null, new CSSResourceEncodingDetector());
}
public void testnonStandardIllFormed() throws IOException {
String filename = fileLocation + "nonStandardIllFormed.css";
doTestFileStream(filename, "ISO-8859-6", new CSSResourceEncodingDetector());
}
public void testnonStandardIllFormed2() throws IOException {
String filename = fileLocation + "nonStandardIllFormed2.css";
doTestFileStream(filename, "ISO-8859-6", new CSSResourceEncodingDetector());
}
public void testShiftJIS() throws IOException {
String filename = fileLocation + "encoding_test_sjis.css";
doTestFileStream(filename, "SHIFT_JIS", new CSSResourceEncodingDetector());
}
public void testUTF16be() throws IOException {
String filename = fileLocation + "utf16be.css";
doTestFileStream(filename, "UTF-16BE", new CSSResourceEncodingDetector());
}
public void testUTF16le() throws IOException {
String filename = fileLocation + "utf16le.css";
doTestFileStream(filename, "UTF-16LE", new CSSResourceEncodingDetector());
}
public void testUTF16beMalformed() throws IOException {
String filename = fileLocation + "utf16beMalformed.css";
doTestFileStream(filename, "UTF-16BE", new CSSResourceEncodingDetector());
}
public void testUTF16leMalformed() throws IOException {
String filename = fileLocation + "utf16leMalformed.css";
doTestFileStream(filename, "UTF-16LE", new CSSResourceEncodingDetector());
}
public void testUTF16BOM() throws IOException {
String filename = fileLocation + "utf16BOM.css";
doTestFileStream(filename, "UTF-16", new CSSResourceEncodingDetector());
}
}