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ニコタグからタグの履歴情報を取得する。
Data = {
count: Integer, // タグの個数
first: Date, // タグ情報を最初に取得した日時
last: Date, // タグ情報を最後に取得した日時
tags: [Tag] // タグ情報の配列
};
Tag = {
id: Integer, // タグのID
name: String, // タグ名
first: Date, // タグが最初に取得された日時
last: Date, // タグが最後に取得された日時
good: Integer, // タグのGood評価
bad: Integer, // タグのBad評価
rank: Integer // タグのランク (good - bad)
};
(function() {
if ('nicotag_getTagsInfo' in window)
return;
const parseISO8601 = (function() {
const regexp = new RegExp(
"^([0-9]{4})(?:-([0-9]{2})(?:-([0-9]{2})" +
"(?:T([0-9]{2}):([0-9]{2})(?::([0-9]{2})(?:\.([0-9]+))?)?" +
"(?:Z|(?:([-+])([0-9]{2}):([0-9]{2})))?)?)?)?$");
return function (string) {
var d = string.match(regexp);
if(d == null) return null;
var offset = 0;
var date = new Date(d[1], 0, 1);
if (d[2]) { date.setMonth(d[2] - 1); }
if (d[3]) { date.setDate(d[3]); }
if (d[4]) { date.setHours(d[4]); }
if (d[5]) { date.setMinutes(d[5]); }
if (d[6]) { date.setSeconds(d[6]); }
if (d[7]) { date.setMilliseconds(Number("0." + d[7]) * 1000); }
if (d[8]) {
offset = (Number(d[9]) * 60) + Number(d[10]);
offset *= ((d[8] == '-') ? 1 : -1);
}
offset -= date.getTimezoneOffset();
var time = (Number(date) + (offset * 60 * 1000));
date.setTime(Number(time));
return date;
};
})();
const Getter = function(videoID) {
this._videoID = videoID;
this._callbacks = [];
};
Getter.prototype = {
_callbacks: null, _lock: false,
_cache: null,
get: function(callback, forceUpdate) {
if (this._cache !== null && !forceUpdate) {
if (typeof callback === 'function')
callback(true, this._cache);
return;
}
if (typeof callback === 'function')
this._callbacks.push(callback);
if (this._lock) return;
this._lock = true;
let self = this;
function finish(isSuccess, data) {
if (isSuccess)
self._cache = data;
self._callbacks.forEach(function(f) f(isSuccess, data));
self._callbacks.length = 0;
self._lock = false;
}
let url = 'http://www.nicotag.jp/api/'
+ (forceUpdate ? 'updtagsinfo' : 'gettagsinfo') + '/' + this._videoID;
GM_xmlhttpRequest({
method: 'GET',
url: url,
headers: { 'User-Agent': 'Mozilla/5.0 Greasemonkey; NicoTag Tab' },
onload: function(response) {
if (response.status === 200)
finish(true, self._parse(response.responseText));
else
finish(false, response);
},
onerror: function(response) finish(false, response)
});
},
_parse: function(text) {
let parser = new DOMParser();
let xml = parser.parseFromString(text, 'application/xml');
function get(elem, attr) elem.getElementsByTagName(attr)[0].textContent;
let tags = this._parseTags(xml, get);
return {
count: get(xml, 'keep_count'),
first: parseISO8601(get(xml, 'first_keep')),
last: parseISO8601(get(xml, 'last_keep')),
tags: tags
};
},
_parseTags: function(xml, get) {
let tags = Array.map(
xml.getElementsByTagName('tag'),
function(tag) {
let obj = {
id: tag.getAttribute('id'),
name: get(tag, 'name'),
first: parseISO8601(get(tag, 'first_added')),
last: parseISO8601(get(tag, 'last_added')),
good: parseInt(get(tag, 'good'), 10),
bad: parseInt(get(tag, 'bad'), 10),
rank: parseInt(get(tag, 'rank'), 10)
};
return obj;
});
return tags;
}
};
let getters = {};
getters.__proto__ = null;
window.nicotag_getTagsInfo = function(videoID, callback, forceUpdate) {
let getter = null;
if (videoID in getters) {
getter = getters[videoID];
} else {
getter = new Getter(videoID);
getters[videoID] = getter;
}
getter.get(callback, forceUpdate);
};
})();
nicotag_getTagsInfo('sm9', function(isSuccess, data) {
alert(isSuccess);
alert(uneval(data));
}, true);
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