zenra.js

window.Zenra = (function() {
    function Zenra(user_config) {
      var default_config = {
        subjects: '私　僕 俺 君 わたし ぼく おれ きみ 貴方 あなた'.split(/\s/),
        conjunctions: 'は が'.split(/\s/)
      };

      if (typeof user_config === 'undefined') {
        user_config = {subjects:[], conjunctions:[]};
      }

      this.subjects = merge(default_config.subjects, user_config.subjects);
      this.conjunctions = merge(default_config.conjunctions, user_config.conjunctions);
      this.z = '全裸で';
    }

    // public

    Zenra.prototype.define = function() {
      var self = this;
      String.prototype.zenra = function() {
        var str = this.replace(/_/, '_');
        each(self.subjects, function(i, subject) {
          each(self.conjunctions, function(_i, conjunction) {
            var word   = subject + conjunction;
            var word_e = new RegExp(word, 'g');
            if (str.match(word_e)) {
              str = str.replace(word_e, word + self.z);
              return false;
            }
          });
        });
        return str;
      };
    };

    // private

    var each = function(items, func) {
      for (var key in items) {
        var result = func(key, items[key]);
        if (result === false) {
          break;
        }
      }
    };

    var merge = function() {
      var args, length, result, item, arg;
      args = Array.prototype.slice.call(arguments);
      length = args.length;
      result = {};
      for(var i = 0; i < length ; i++){
        arg = args[i];
        for (item in arg) {
          if (arg.hasOwnProperty(item))
            result[item] = arg[item];
          }
        }
      return result;
    };

    return Zenra;
  })();