diff options
Diffstat (limited to 'java/src/com/android')
3 files changed, 70 insertions, 55 deletions
diff --git a/java/src/com/android/inputmethod/latin/BinaryDictionaryGetter.java b/java/src/com/android/inputmethod/latin/BinaryDictionaryGetter.java index fa301b5a6..d0a4afd50 100644 --- a/java/src/com/android/inputmethod/latin/BinaryDictionaryGetter.java +++ b/java/src/com/android/inputmethod/latin/BinaryDictionaryGetter.java @@ -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(); diff --git a/java/src/com/android/inputmethod/latin/makedict/BinaryDictInputOutput.java b/java/src/com/android/inputmethod/latin/makedict/BinaryDictInputOutput.java index 1b187d85d..e2fa0231d 100644 --- a/java/src/com/android/inputmethod/latin/makedict/BinaryDictInputOutput.java +++ b/java/src/com/android/inputmethod/latin/makedict/BinaryDictInputOutput.java @@ -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."); diff --git a/java/src/com/android/inputmethod/latin/makedict/FormatSpec.java b/java/src/com/android/inputmethod/latin/makedict/FormatSpec.java index 46266aa50..2bb5d8b6e 100644 --- a/java/src/com/android/inputmethod/latin/makedict/FormatSpec.java +++ b/java/src/com/android/inputmethod/latin/makedict/FormatSpec.java @@ -26,6 +26,40 @@ 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: * * g | @@ -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. |