@Override
public void detectLanguageAndEncoding(Book book) throws BookReadingException {
InputStream stream = null;
try {
stream = book.File.getInputStream();
final PdbHeader header = new PdbHeader(stream);
PdbUtil.skip(stream, header.Offsets[0] + 16 - header.length());
if (PdbUtil.readInt(stream) != 0x4D4F4249) /* "MOBI" */ {
throw new BookReadingException("unsupportedFileFormat", book.File);
}
final int length = (int) PdbUtil.readInt(stream);
PdbUtil.skip(stream, 4);
final int encodingCode = (int) PdbUtil.readInt(stream);
final Encoding encoding = supportedEncodings().getEncoding(encodingCode);
final String encodingName = encoding != null ? encoding.Name : "utf-8";
book.setEncoding(encodingName);
PdbUtil.skip(stream, 52);
final int fullNameOffset = (int) PdbUtil.readInt(stream);
final int fullNameLength = (int) PdbUtil.readInt(stream);
final int languageCode = (int) PdbUtil.readInt(stream);
book.setLanguage(
ZLLanguageUtil.languageByIntCode(languageCode & 0xFF, (languageCode >> 8) & 0xFF));
} catch (IOException e) {
throw new BookReadingException(e, book.File);
} finally {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
}
}
}
}
public PdbStream(ZLFile file) throws IOException {
myBase = new InputStreamWithOffset(file.getInputStream());
myHeader = new PdbHeader(myBase);
myBase.skip(myHeader.Offsets[0] - myHeader.length());
myBufferLength = 0;
myBufferOffset = 0;
}
@Override
public void readMetaInfo(Book book) throws BookReadingException {
InputStream stream = null;
try {
stream = book.File.getInputStream();
final PdbHeader header = new PdbHeader(stream);
PdbUtil.skip(stream, header.Offsets[0] + 16 - header.length());
if (PdbUtil.readInt(stream) != 0x4D4F4249) /* "MOBI" */ {
throw new BookReadingException("unsupportedFileFormat", book.File);
}
final int length = (int) PdbUtil.readInt(stream);
PdbUtil.skip(stream, 4);
final int encodingCode = (int) PdbUtil.readInt(stream);
final Encoding encoding = supportedEncodings().getEncoding(encodingCode);
final String encodingName = encoding != null ? encoding.Name : "utf-8";
book.setEncoding(encodingName);
PdbUtil.skip(stream, 52);
final int fullNameOffset = (int) PdbUtil.readInt(stream);
final int fullNameLength = (int) PdbUtil.readInt(stream);
final int languageCode = (int) PdbUtil.readInt(stream);
book.setLanguage(
ZLLanguageUtil.languageByIntCode(languageCode & 0xFF, (languageCode >> 8) & 0xFF));
PdbUtil.skip(stream, 32);
int offset = 132;
if ((PdbUtil.readInt(stream) & 0x40) != 0) {
PdbUtil.skip(stream, length - 116);
offset = length + 20;
if (PdbUtil.readInt(stream) == 0x45585448) /* "EXTH" */ {
PdbUtil.skip(stream, 4);
final int recordsNumber = (int) PdbUtil.readInt(stream);
offset += 8;
for (int i = 0; i < recordsNumber; ++i) {
final int type = (int) PdbUtil.readInt(stream);
final int size = (int) PdbUtil.readInt(stream);
offset += size;
if (size <= 8) {
continue;
}
switch (type) {
default:
PdbUtil.skip(stream, size - 8);
break;
case 100:
{
final byte[] buffer = new byte[size - 8];
stream.read(buffer);
String author = new String(buffer, encodingName);
final int index = author.indexOf(',');
if (index != -1) {
author =
author.substring(index + 1).trim()
+ ' '
+ author.substring(0, index).trim();
} else {
author = author.trim();
}
book.addAuthor(author);
break;
}
case 105:
{
final byte[] buffer = new byte[size - 8];
stream.read(buffer);
book.addTag(new String(buffer, encodingName));
break;
}
}
}
}
}
PdbUtil.skip(stream, fullNameOffset - offset);
final byte[] titleBuffer = new byte[fullNameLength];
stream.read(titleBuffer);
book.setTitle(new String(titleBuffer, encodingName));
} catch (IOException e) {
throw new BookReadingException(e, book.File);
} finally {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
}
}
}
}
private ZLSingleImage readCoverInternal(ZLFile file) {
InputStream stream = null;
try {
stream = file.getInputStream();
final PdbHeader header = new PdbHeader(stream);
PdbUtil.skip(stream, header.Offsets[0] + 16 - header.length());
if (PdbUtil.readInt(stream) != 0x4D4F4249) /* "MOBI" */ {
return null;
}
final int length = (int) PdbUtil.readInt(stream);
PdbUtil.skip(stream, 104);
final int exthFlags = (int) PdbUtil.readInt(stream);
int coverIndex = -1;
int thumbIndex = -1;
int offset = 132;
if ((exthFlags & 0x40) != 0) {
PdbUtil.skip(stream, length - 116);
offset = length + 20;
if (PdbUtil.readInt(stream) != 0x45585448) /* "EXTH" */ {
return null;
}
PdbUtil.skip(stream, 4);
final int recordsNumber = (int) PdbUtil.readInt(stream);
offset += 8;
for (int i = 0; i < recordsNumber; ++i) {
final int type = (int) PdbUtil.readInt(stream);
final int size = (int) PdbUtil.readInt(stream);
offset += size;
if (size <= 8) {
continue;
}
switch (type) {
default:
PdbUtil.skip(stream, size - 8);
break;
case 201:
{
if (size == 12) {
coverIndex = (int) PdbUtil.readInt(stream);
} else {
PdbUtil.skip(stream, size - 8);
}
break;
}
case 202:
{
if (size == 12) {
thumbIndex = (int) PdbUtil.readInt(stream);
} else {
PdbUtil.skip(stream, size - 8);
}
break;
}
}
}
}
final InputStream tempStream = stream;
stream = null;
tempStream.close();
if (coverIndex == -1) {
if (thumbIndex == -1) {
return null;
}
coverIndex = thumbIndex;
}
MobipocketStream myMobipocketStream = new MobipocketStream(file);
int start = myMobipocketStream.getImageOffset(coverIndex);
if (start >= 0) {
int len = myMobipocketStream.getImageLength(coverIndex);
if (len > 0) {
return new ZLFileImage(MimeType.IMAGE_AUTO, file, start, len);
}
}
return null;
} catch (IOException e) {
return null;
} finally {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
}
}
}
}
