'use strict';
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var Type = require('../type');
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var YAML_DATE_REGEXP = new RegExp(
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'^([0-9][0-9][0-9][0-9])' + // [1] year
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'-([0-9][0-9])' + // [2] month
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'-([0-9][0-9])$'); // [3] day
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var YAML_TIMESTAMP_REGEXP = new RegExp(
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'^([0-9][0-9][0-9][0-9])' + // [1] year
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'-([0-9][0-9]?)' + // [2] month
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'-([0-9][0-9]?)' + // [3] day
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'(?:[Tt]|[ \\t]+)' + // ...
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'([0-9][0-9]?)' + // [4] hour
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':([0-9][0-9])' + // [5] minute
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':([0-9][0-9])' + // [6] second
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'(?:\\.([0-9]*))?' + // [7] fraction
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'(?:[ \\t]*(Z|([-+])([0-9][0-9]?)' + // [8] tz [9] tz_sign [10] tz_hour
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'(?::([0-9][0-9]))?))?$'); // [11] tz_minute
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function resolveYamlTimestamp(data) {
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if (data === null) return false;
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if (YAML_DATE_REGEXP.exec(data) !== null) return true;
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if (YAML_TIMESTAMP_REGEXP.exec(data) !== null) return true;
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return false;
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}
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function constructYamlTimestamp(data) {
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var match, year, month, day, hour, minute, second, fraction = 0,
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delta = null, tz_hour, tz_minute, date;
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match = YAML_DATE_REGEXP.exec(data);
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if (match === null) match = YAML_TIMESTAMP_REGEXP.exec(data);
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if (match === null) throw new Error('Date resolve error');
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// match: [1] year [2] month [3] day
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year = +(match[1]);
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month = +(match[2]) - 1; // JS month starts with 0
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day = +(match[3]);
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if (!match[4]) { // no hour
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return new Date(Date.UTC(year, month, day));
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}
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// match: [4] hour [5] minute [6] second [7] fraction
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hour = +(match[4]);
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minute = +(match[5]);
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second = +(match[6]);
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if (match[7]) {
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fraction = match[7].slice(0, 3);
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while (fraction.length < 3) { // milli-seconds
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fraction += '0';
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}
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fraction = +fraction;
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}
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// match: [8] tz [9] tz_sign [10] tz_hour [11] tz_minute
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if (match[9]) {
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tz_hour = +(match[10]);
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tz_minute = +(match[11] || 0);
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delta = (tz_hour * 60 + tz_minute) * 60000; // delta in mili-seconds
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if (match[9] === '-') delta = -delta;
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}
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date = new Date(Date.UTC(year, month, day, hour, minute, second, fraction));
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if (delta) date.setTime(date.getTime() - delta);
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return date;
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}
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function representYamlTimestamp(object /*, style*/) {
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return object.toISOString();
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}
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module.exports = new Type('tag:yaml.org,2002:timestamp', {
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kind: 'scalar',
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resolve: resolveYamlTimestamp,
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construct: constructYamlTimestamp,
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instanceOf: Date,
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represent: representYamlTimestamp
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});
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