fixYqlJson.js

String.prototype.fix = function() {
	var newString = [];
	var x, y, z, c;
	
	for(var i = 0; i < this.length; i ++) {
		c = this.charCodeAt(i);

		if((c & 0xe0) == 0xe0) {
			if((x = c ^ 0xe0) > 0xf) {
				newString.push(String.fromCharCode(c));
			} else {
				y = this._fixFollowingByte(this.charCodeAt(++i));
				z = this._fixFollowingByte(this.charCodeAt(++i));

				newString.push(String.fromCharCode((x << 12) + (y << 6) + z));
			}
		} else if((c & 0xc0) == 0xc0) {
			if((x = c ^ 0xc0) > 0x1f) {
				newString.push(String.fromCharCode(c));
			} else {
				y = this._fixFollowingByte(this.charCodeAt(++i));
				
				newString.push(String.fromCharCode((x << 6) + y));
			}
		} else {
			newString.push(String.fromCharCode(c));
		}
	}

	return newString.join('');
};

String.prototype._fixFollowingByte = function(c) {
	if(c & 0x80) {
		return c ^ 0x80;
	} else {
		return c;
	}
};

fixObj = function(obj) {
	var newObj = {};

	for(var i in obj) {
		if(typeof obj[i] == 'string') {
			newObj[i] = obj[i].fix();
		} else if(typeof obj[i] == 'object') {
			newObj[i] = fixObj(obj[i]);
		} else {
			newObj[i] = obj[i];
		}
	}

	return newObj;
};

fixYqlJson.test.js

utils.include('fixYqlJson.js');

function testFix() {
	assertEqual(2, "人ç\u0094\u009f".fix().length);
	assertEqual("人生", "人ç\u0094\u009f".fix());
	assertEqual("人生狂",  "人ç\u0094\u009fç\u008b\u0082".fix());
	assertEqual(" abc",  " abc".fix());
	assertEqual("人生狂わす、ニクいやつ\n    | LIQUIDROOM",  "人ç\u0094\u009fç\u008b\u0082ã\u0082\u008fã\u0081\u0099ã\u0080\u0081ã\u0083\u008bã\u0082¯ã\u0081\u0084ã\u0082\u0084ã\u0081¤\n    | LIQUIDROOM".fix());
	assertEqual("人生", "人生".fix());
	assertEqual("ー", "ー".fix());
	assertEqual("オークション", "オークション".fix());
	assertEqual("ページの先頭に戻る", "ã\u0083\u009aã\u0083¼ã\u0082¸ã\u0081®å\u0085\u0088é \u00adã\u0081«æ\u0088»ã\u0082\u008b".fix());
	assertEqual("ページの先頭に戻る", "ページの先頭に戻る".fix());
}

function testFixJSON() {
	var newObj = fixObj({
		foo: "人ç\u0094\u009f",
		bar: 1
	});

	assertEqual("人生", newObj.foo);
	assertEqual(1, newObj.bar);
}

function testFixComplexJSON() {
	var newObj = fixObj({
		foo: "aaa",
		bar: {
			baz: "人ç\u0094\u009f",
			xxx: 2
		}
	});

	assertEqual("aaa", newObj.foo);
	assertEqual("人生", newObj.bar.baz);
	assertEqual(2, newObj.bar.xxx);
}