簡易わかち書き

easywakati.js

function easyWakati(str, key) {
	var reg_list = {
		'ratin'     : '\u0000-\u007F',
		'kanji'     : '\u4E00-\u9FFF\u3400-\u4DBF\u20000-\u2A6DF\u2A700-\u2B73F\u2B740-\u2B81F\uF900-\uFAFF\u2F800-\u2FA1D\u3190-\u319F\u2E80-\u2EFF\u2F00-\u2FDF\u31C0-\u31EF',
		'hiragana'  : '\u3040-\u309F',
		'katakana'  : '\u30A0-\u30FF\u31F0-\u31FF\u1B000-\u1B0FF\uFF65-\uFF9F',
		'zen_ascii' : '\uFF00-\uFFEF'
	};
	var other = [];
	for( var k in reg_list ) {
		other.push( reg_list[k] );
	}
	reg_list.other = '^' + other.join('');

	var pattern = [];
	if ( key in reg_list ) {
		pattern.push( '[' + reg_list[key] + ']+' );
	} else {
		for( var k in reg_list ) {
			pattern.push( '[' + reg_list[k] + ']+' );
		}
	}
	return str.match( new RegExp( pattern.join('|'), 'g' ) );
}