/** Backward compatibility test. */
@Test
public void testLatin1() {
CodeFunctions functions = CodeFunctions.createEncoderForLBL("latin1");
assertEquals("code page", 1252, functions.getCodepage());
assertEquals("encoding type", 9, functions.getEncodingType());
StringBuilder sb = new StringBuilder();
for (char c = 1; c < 256; c++) {
sb.append(c);
}
CharacterEncoder encoder = functions.getEncoder();
EncodedText text = encoder.encodeText(sb.toString());
// This encoder appends a null byte.
assertEquals("length of encoded text", 256, text.getLength());
for (int i = 1; i < 256; i++) {
// The following characters do not display on my GPS. This covers
// the region where windows-1252 differs from iso 8859 so we don't
// really know which it is meant to be.
if (i >= 0x80 && i <= 0xbf) continue;
assertEquals("character", i, text.getCtext()[i - 1] & 0xff);
}
}
protected int getLength() {
int length = 1;
if (description != null) length += description.toBytes(true, true).length;
else length++;
if (url != null) length += url.length();
return length;
}
/**
* Transliteration when going to ascii in format 6. This was originally the only place where
* transliteration was available.
*/
@Test
public void testTransliterateLatin() {
CodeFunctions functions = CodeFunctions.createEncoderForLBL("latin1");
CharacterEncoder encoder = functions.getEncoder();
EncodedText text = encoder.encodeText("Körnerstraße, Velkomezeříčská, Skólavörðustigur");
CharacterDecoder decoder = functions.getDecoder();
byte[] ctext = text.getCtext();
for (int i = 0; i < text.getLength(); i++) {
decoder.addByte(ctext[i]);
}
String result = decoder.getText().getText();
assertEquals("transliterated text", "Körnerstraße, Velkomezerícská, Skólavörðustigur", result);
}
/**
* Transliteration when going to ascii in format 6. This was originally the only place where
* transliteration was available.
*/
@Test
public void testTransliterate6() {
CodeFunctions functions = CodeFunctions.createEncoderForLBL(6);
CharacterEncoder encoder = functions.getEncoder();
EncodedText text = encoder.encodeText("Körnerstraße, Velkomezeříčská, Skólavörðustigur");
CharacterDecoder decoder = functions.getDecoder();
byte[] ctext = text.getCtext();
for (int i = 0; i < text.getLength(); i++) {
decoder.addByte(ctext[i]);
}
decoder.addByte(0xff);
String result = decoder.getText().getText();
assertEquals("transliterated text", "KORNERSTRASSE, VELKOMEZERICSKA, SKOLAVORDUSTIGUR", result);
}
protected int getLength() {
int length = 4;
if (mimeType != null) length += mimeType.length();
if (description != null) length += description.toBytes().length;
if (imageData != null) length += imageData.length;
return length;
}
@Override
public int hashCode() {
final int prime = 31;
int result = super.hashCode();
result = prime * result + ((description == null) ? 0 : description.hashCode());
result = prime * result + ((url == null) ? 0 : url.hashCode());
return result;
}
/** Quick check of the ascii 6 bit format conversion. */
@Test
public void testFormat6() {
CodeFunctions functions = CodeFunctions.createEncoderForLBL(6);
assertEquals("code page", 0, functions.getCodepage());
assertEquals("encoding type", 6, functions.getEncodingType());
CharacterEncoder enc = functions.getEncoder();
EncodedText etext = enc.encodeText("hello world");
byte[] ctext = etext.getCtext();
int len = etext.getLength();
// This was determined from the behaviour of the existing code, and not
// from first principles.
assertEquals("encoded length", 9, len);
byte[] foo = {
0x20, 0x53, 0xc, 0x3c, 0x5, 0xffffffcf, 0x48, 0xffffffc1, 0x3f,
};
assertArrayEquals("encoded text", foo, Arrays.copyOf(ctext, len));
}
protected byte[] packFrameData() {
byte[] bytes = new byte[getLength()];
if (description != null) bytes[0] = description.getTextEncoding();
else bytes[0] = 0;
int marker = 1;
if (description != null) {
byte[] descriptionBytes = description.toBytes(true, true);
BufferTools.copyIntoByteBuffer(descriptionBytes, 0, descriptionBytes.length, bytes, marker);
marker += descriptionBytes.length;
} else {
bytes[marker++] = 0;
}
if (url != null && url.length() > 0) {
try {
BufferTools.stringIntoByteBuffer(url, 0, url.length(), bytes, marker);
} catch (UnsupportedEncodingException e) {
}
}
return bytes;
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (!super.equals(obj)) return false;
if (getClass() != obj.getClass()) return false;
ID3v2UrlFrameData other = (ID3v2UrlFrameData) obj;
if (description == null) {
if (other.description != null) return false;
} else if (!description.equals(other.description)) return false;
if (url == null) {
if (other.url != null) return false;
} else if (!url.equals(other.url)) return false;
return true;
}
protected void unpackFrameData(byte[] bytes) throws InvalidDataException {
int marker = BufferTools.indexOfTerminatorForEncoding(bytes, 1, bytes[0]);
if (marker >= 0) {
description = new EncodedText(bytes[0], BufferTools.copyBuffer(bytes, 1, marker - 1));
marker += description.getTerminator().length;
} else {
description = new EncodedText(bytes[0], "");
marker = 1;
}
try {
url = BufferTools.byteBufferToString(bytes, marker, bytes.length - marker);
} catch (UnsupportedEncodingException e) {
url = "";
}
}
protected byte[] packFrameData() {
byte[] bytes = new byte[getLength()];
if (description != null) bytes[0] = description.getTextEncoding();
else bytes[0] = 0;
int mimeTypeLength = 0;
if (mimeType != null && mimeType.length() > 0) {
mimeTypeLength = mimeType.length();
BufferTools.stringIntoByteBuffer(mimeType, 0, mimeTypeLength, bytes, 1);
}
bytes[mimeTypeLength + 1] = 0;
bytes[mimeTypeLength + 2] = pictureType;
int descriptionLength = 0;
if (description != null && description.toBytes().length > 0) {
descriptionLength = description.toBytes().length;
BufferTools.copyIntoByteBuffer(
description.toBytes(), 0, descriptionLength, bytes, mimeTypeLength + 3);
}
bytes[mimeTypeLength + descriptionLength + 3] = 0;
if (imageData != null && imageData.length > 0) {
BufferTools.copyIntoByteBuffer(
imageData, 0, imageData.length, bytes, mimeTypeLength + descriptionLength + 4);
}
return bytes;
}
public boolean equals(Object obj) {
if (!(obj instanceof ID3v2PictureFrameData)) return false;
if (!super.equals(obj)) return false;
ID3v2PictureFrameData other = (ID3v2PictureFrameData) obj;
if (pictureType != other.pictureType) return false;
if (mimeType == null) {
if (other.mimeType != null) return false;
} else if (other.mimeType == null) return false;
else if (!mimeType.equals(other.mimeType)) return false;
if (description == null) {
if (other.description != null) return false;
} else if (other.description == null) return false;
else if (!description.equals(other.description)) return false;
if (imageData == null) {
if (other.imageData != null) return false;
} else if (other.imageData == null) return false;
else if (!Arrays.equals(imageData, other.imageData)) return false;
return true;
}
