ext/ruby_speech/RubySpeechGRXMLMatcher.java
package com.adhearsion.ruby_speech;
import org.jruby.Ruby;
import org.jruby.RubyClass;
import org.jruby.RubyModule;
import org.jruby.RubyObject;
import org.jruby.anno.JRubyClass;
import org.jruby.anno.JRubyMethod;
import org.jruby.runtime.Block;
import org.jruby.runtime.ObjectAllocator;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.Visibility;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.javasupport.util.RuntimeHelpers;
import java.util.regex.*;
@JRubyClass(name="RubySpeech::GRXML::Matcher")
public class RubySpeechGRXMLMatcher extends RubyObject {
Pattern p;
public RubySpeechGRXMLMatcher(final Ruby runtime, RubyClass rubyClass) {
super(runtime, rubyClass);
}
@JRubyMethod(visibility=Visibility.PRIVATE)
public IRubyObject compile_regex(ThreadContext context, IRubyObject regex) {
Ruby runtime = context.getRuntime();
p = Pattern.compile(regex.toString());
return runtime.getNil();
}
@JRubyMethod(visibility=Visibility.PUBLIC)
public IRubyObject find_match(ThreadContext context, IRubyObject buffer)
{
Ruby runtime = context.getRuntime();
String string_buffer = buffer.toString();
Matcher m = p.matcher(string_buffer);
if (m.matches()) {
if (is_max_match(string_buffer)) {
return RuntimeHelpers.invoke(context, this, "match_for_buffer", buffer, runtime.getTrue());
}
return callMethod(context, "match_for_buffer", buffer);
} else if (m.hitEnd()) {
return getGRXMLType(runtime, "PotentialMatch").newInstance(context, Block.NULL_BLOCK);
}
return getGRXMLType(runtime, "NoMatch").newInstance(context, Block.NULL_BLOCK);
}
private boolean is_max_match(String buffer) {
final int len = buffer.length();
StringBuilder new_buffer = new StringBuilder(len + 1);
new_buffer.append(buffer).append('\0');
final String search_set = "0123456789#*ABCD";
for (int i = 0; i < search_set.length(); i++) {
new_buffer.setCharAt(len, search_set.charAt(i));
if (p.matcher(new_buffer).matches()) return false;
}
return true;
}
private static RubyClass getGRXMLType(final Ruby runtime, final String name) {
RubyModule grxml = (RubyModule) runtime.getModule("RubySpeech").getConstantAt("GRXML");
return (RubyClass) grxml.getConstantAt(name);
}
}