/**
* Loads a compiled grammar from a file.
*
* @param grammar A file representing the compiled G2G-formatted grammar.
* @return <code>true</code> on success
*/
public boolean loadGrammar(File grammar) {
boolean successful = false;
// Check directory contents...
String[] contents = grammar.getParentFile().list();
for (String content : contents) {
Log.e(TAG, content);
}
mGrammar = grammar;
String path = mGrammar.getPath();
try {
mSrec = new Recognizer(SREC_DIR + "/baseline11k.par");
mSrecGrammar = mSrec.new Grammar(path);
mSrecGrammar.setupRecognizer();
mSrecGrammar.resetAllSlots();
successful = true;
} catch (IllegalStateException e) {
Log.e(TAG, e.toString());
String[] contents2 = grammar.getParentFile().list();
for (String content : contents2) {
Log.e(TAG, "+" + content);
}
e.printStackTrace();
} catch (IOException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
}
if (!successful) {
if (mSrecGrammar != null) {
mSrecGrammar.destroy();
}
if (mSrec != null) {
mSrec.destroy();
}
mSrecGrammar = null;
mGrammar = null;
mSrec = null;
}
return successful;
}
/**
* Loads the available slots in a grammar using the entries in the supplied GrammarMap. You must
* load a grammar before calling this method.
*
* @param map A populated GrammarMap object.
* @return <code>true</code> on success
*/
public boolean loadSlots(GrammarMap map) {
Context context = mContext.get();
Resources res = context.getResources();
File cached = context.getFileStreamPath("compiled." + EXTENSION_G2G);
cached.deleteOnExit();
for (Entry<String, List<GrammarEntry>> pair : map.getEntries()) {
String slot = pair.getKey();
List<GrammarEntry> entries = pair.getValue();
for (GrammarEntry entry : entries) {
mSrecGrammar.addWordToSlot(slot, entry.word, entry.pron, entry.weight, entry.tag);
}
}
// Attempt to compile and save grammar to cache
try {
mSrecGrammar.compile();
cached.getParentFile().mkdirs();
mSrecGrammar.save(cached.getPath());
Log.i(TAG, "Compiled grammar to " + cached.getAbsolutePath());
} catch (IOException e) {
e.printStackTrace();
return false;
}
// Destroy the old grammar
mSrecGrammar.destroy();
mSrecGrammar = null;
// Attempt to load new grammar from cached copy
try {
mGrammar = cached;
mSrecGrammar = mSrec.new Grammar(cached.getPath());
mSrecGrammar.setupRecognizer();
} catch (IOException e) {
e.printStackTrace();
return false;
}
return true;
}
/**
* Stops the recognition thread and destroys the recognizer. You may not call any methods on the
* object after calling this method.
*/
public void shutdown() {
stop();
mSrecGrammar.destroy();
mSrec.destroy();
}
