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am 7ec9db2c: Remove the code and comments about version 1 format.

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* commit '7ec9db2c34ee6bec2cbff6cf05cee9bf3c2f7122':
  Remove the code and comments about version 1 format.
This commit is contained in:
Yuichiro Hanada 2013-08-09 04:30:24 -07:00 committed by Android Git Automerger
commit 5d7b46343b
3 changed files with 69 additions and 54 deletions
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2
java/src/com/android/inputmethod/latin/BinaryDictionaryGetter.java
View File

@ -235,7 +235,7 @@ final public class BinaryDictionaryGetter {
new BinaryDictInputOutput.ByteBufferWrapper(inStream.getChannel().map(
FileChannel.MapMode.READ_ONLY, 0, f.length()));
final int magic = buffer.readInt();
if (magic != FormatSpec.VERSION_2_MAGIC_NUMBER) {
if (magic != FormatSpec.MAGIC_NUMBER) {
return false;
}
final int formatVersion = buffer.readInt();

81
java/src/com/android/inputmethod/latin/makedict/BinaryDictInputOutput.java
View File

@ -1210,49 +1210,38 @@ public final class BinaryDictInputOutput {
ByteArrayOutputStream headerBuffer = new ByteArrayOutputStream(256);
// The magic number in big-endian order.
if (version >= FormatSpec.FIRST_VERSION_WITH_HEADER_SIZE) {
// Magic number for version 2+.
headerBuffer.write((byte) (0xFF & (FormatSpec.VERSION_2_MAGIC_NUMBER >> 24)));
headerBuffer.write((byte) (0xFF & (FormatSpec.VERSION_2_MAGIC_NUMBER >> 16)));
headerBuffer.write((byte) (0xFF & (FormatSpec.VERSION_2_MAGIC_NUMBER >> 8)));
headerBuffer.write((byte) (0xFF & FormatSpec.VERSION_2_MAGIC_NUMBER));
// Dictionary version.
headerBuffer.write((byte) (0xFF & (version >> 8)));
headerBuffer.write((byte) (0xFF & version));
} else {
// Magic number for version 1.
headerBuffer.write((byte) (0xFF & (FormatSpec.VERSION_1_MAGIC_NUMBER >> 8)));
headerBuffer.write((byte) (0xFF & FormatSpec.VERSION_1_MAGIC_NUMBER));
// Dictionary version.
headerBuffer.write((byte) (0xFF & version));
}
// Magic number for all versions.
headerBuffer.write((byte) (0xFF & (FormatSpec.MAGIC_NUMBER >> 24)));
headerBuffer.write((byte) (0xFF & (FormatSpec.MAGIC_NUMBER >> 16)));
headerBuffer.write((byte) (0xFF & (FormatSpec.MAGIC_NUMBER >> 8)));
headerBuffer.write((byte) (0xFF & FormatSpec.MAGIC_NUMBER));
// Dictionary version.
headerBuffer.write((byte) (0xFF & (version >> 8)));
headerBuffer.write((byte) (0xFF & version));
// Options flags
final int options = makeOptionsValue(dict, formatOptions);
headerBuffer.write((byte) (0xFF & (options >> 8)));
headerBuffer.write((byte) (0xFF & options));
if (version >= FormatSpec.FIRST_VERSION_WITH_HEADER_SIZE) {
final int headerSizeOffset = headerBuffer.size();
// Placeholder to be written later with header size.
for (int i = 0; i < 4; ++i) {
headerBuffer.write(0);
}
// Write out the options.
for (final String key : dict.mOptions.mAttributes.keySet()) {
final String value = dict.mOptions.mAttributes.get(key);
CharEncoding.writeString(headerBuffer, key);
CharEncoding.writeString(headerBuffer, value);
}
final int size = headerBuffer.size();
final byte[] bytes = headerBuffer.toByteArray();
// Write out the header size.
bytes[headerSizeOffset] = (byte) (0xFF & (size >> 24));
bytes[headerSizeOffset + 1] = (byte) (0xFF & (size >> 16));
bytes[headerSizeOffset + 2] = (byte) (0xFF & (size >> 8));
bytes[headerSizeOffset + 3] = (byte) (0xFF & (size >> 0));
destination.write(bytes);
} else {
headerBuffer.writeTo(destination);
final int headerSizeOffset = headerBuffer.size();
// Placeholder to be written later with header size.
for (int i = 0; i < 4; ++i) {
headerBuffer.write(0);
}
// Write out the options.
for (final String key : dict.mOptions.mAttributes.keySet()) {
final String value = dict.mOptions.mAttributes.get(key);
CharEncoding.writeString(headerBuffer, key);
CharEncoding.writeString(headerBuffer, value);
}
final int size = headerBuffer.size();
final byte[] bytes = headerBuffer.toByteArray();
// Write out the header size.
bytes[headerSizeOffset] = (byte) (0xFF & (size >> 24));
bytes[headerSizeOffset + 1] = (byte) (0xFF & (size >> 16));
bytes[headerSizeOffset + 2] = (byte) (0xFF & (size >> 8));
bytes[headerSizeOffset + 3] = (byte) (0xFF & (size >> 0));
destination.write(bytes);
headerBuffer.close();
@ -1658,10 +1647,8 @@ public final class BinaryDictInputOutput {
*/
private static int getFormatVersion(final FusionDictionaryBufferInterface buffer)
throws IOException {
final int magic_v1 = buffer.readUnsignedShort();
if (FormatSpec.VERSION_1_MAGIC_NUMBER == magic_v1) return buffer.readUnsignedByte();
final int magic_v2 = (magic_v1 << 16) + buffer.readUnsignedShort();
if (FormatSpec.VERSION_2_MAGIC_NUMBER == magic_v2) return buffer.readUnsignedShort();
final int magic = buffer.readInt();
if (FormatSpec.MAGIC_NUMBER == magic) return buffer.readUnsignedShort();
return FormatSpec.NOT_A_VERSION_NUMBER;
}
@ -1695,13 +1682,9 @@ public final class BinaryDictInputOutput {
final HashMap<String, String> attributes = new HashMap<String, String>();
final int headerSize;
if (version < FormatSpec.FIRST_VERSION_WITH_HEADER_SIZE) {
headerSize = buffer.position();
} else {
headerSize = buffer.readInt();
populateOptions(buffer, headerSize, attributes);
buffer.position(headerSize);
}
headerSize = buffer.readInt();
populateOptions(buffer, headerSize, attributes);
buffer.position(headerSize);
if (headerSize < 0) {
throw new UnsupportedFormatException("header size can't be negative.");

40
java/src/com/android/inputmethod/latin/makedict/FormatSpec.java
View File

@ -25,6 +25,40 @@ import com.android.inputmethod.latin.makedict.FusionDictionary.DictionaryOptions
*/
public final class FormatSpec {
/*
* File header layout is as follows:
*
* v |
* e | MAGIC_NUMBER + version of the file format, 2 bytes.
* r |
* sion
*
* o |
* p | not used 4 bits
* t | has bigrams ? 1 bit, 1 = yes, 0 = no : CONTAINS_BIGRAMS_FLAG
* i | FRENCH_LIGATURE_PROCESSING_FLAG
* o | supports dynamic updates ? 1 bit, 1 = yes, 0 = no : SUPPORTS_DYNAMIC_UPDATE
* n | GERMAN_UMLAUT_PROCESSING_FLAG
* f |
* lags
*
* h |
* e | size of the file header, 4bytes
* a | including the size of the magic number, the option flags and the header size
* d |
* ersize
*
* | attributes list
*
* attributes list is:
* <key> = | string of characters at the char format described below, with the terminator used
* | to signal the end of the string.
* <value> = | string of characters at the char format described below, with the terminator used
* | to signal the end of the string.
* if the size of already read < headersize, goto key.
*
*/
/*
* Array of Node(FusionDictionary.Node) layout is as follows:
*
@ -151,12 +185,10 @@ public final class FormatSpec {
* if (FLAG_ATTRIBUTE_HAS_NEXT goto flags
*/
static final int VERSION_1_MAGIC_NUMBER = 0x78B1;
public static final int VERSION_2_MAGIC_NUMBER = 0x9BC13AFE;
static final int MINIMUM_SUPPORTED_VERSION = 1;
public static final int MAGIC_NUMBER = 0x9BC13AFE;
static final int MINIMUM_SUPPORTED_VERSION = 2;
static final int MAXIMUM_SUPPORTED_VERSION = 3;
static final int NOT_A_VERSION_NUMBER = -1;
static final int FIRST_VERSION_WITH_HEADER_SIZE = 2;
static final int FIRST_VERSION_WITH_DYNAMIC_UPDATE = 3;
// These options need to be the same numeric values as the one in the native reading code.