Node.js から libkkc を利用してみるテスト. 実際には Python(PyGObject) のスクリプトを経由して、結果を受け取る.

node-libkkc.js

/**
 * Node.js から libkkc を利用してみるテスト.
 * 実際には Python(PyGObject) のスクリプトを経由して、結果を受け取る.
 * Usage: node node-libkkc.js <SENTENCE>
 */

var path = require('path');
var spawn = require('child_process').spawn;

var bufConcat = function(src, data){
    var len = src.length;
    var ret = new Buffer(len + data.length);
    src.copy(ret, 0, 0);
    data.copy(ret, len, 0);

    return ret;
}


var print_segments = function(segments){
  segments.forEach(function(segment){
    var out = '';
    segment.forEach(function(item){
      out = out + item.output + ' ';
    })
    console.log(out);
  });
}

var decode = function(sentence, cb){
  var script = path.join(__dirname, 'node-libkkc.py'); 

  var kkc = spawn('python', [script, sentence]);

  var stdout = new Buffer(0);
  var stderr = new Buffer(0);

  kkc.stdout.on('data', function(data){
    stdout = bufConcat(stdout, data);
  });
  kkc.stderr.on('data', function(data){
    stderr = bufConcat(stderr, data);
  });

  kkc.on('exit', function(code){
    cb(code, stdout, stdout);
  });
};


decode(process.argv[2], function(err, stdout, stderr){
  if(!err){
    try{
      var segments = JSON.parse(stdout.toString());
      print_segments(segments);
    }catch(e){
      console.log(e);
    }
  }else{
    console.log(stderr);
  }
});

node-libkkc.py

# -*- encoding: utf-8 -*-
""" libkkc の decode 結果を JSON 文字列として出力する.

"""
import sys
import json

from gi.repository import Kkc

Kkc.init()

model = Kkc.LanguageModel.load ("sorted3");
decoder = Kkc.Decoder.create(model);

segments = decoder.decode(sys.argv[1], 1, []);

segments_array = []
for segment in segments:
  segment_array = []
  segments_array.append(segment_array);
  while segment is not None:
    segment_array.append({
      'input': segment.get_property('input'),
      'output': segment.get_property('output')
      })
    segment = segment.next

print(json.dumps(segments_array))