102 lines
3.6 KiB
JavaScript
102 lines
3.6 KiB
JavaScript
import { stringifyNumber } from '../../stringify/stringifyNumber.js';
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/** Internal types handle bigint as number, because TS can't figure it out. */
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function parseSexagesimal(str, asBigInt) {
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const sign = str[0];
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const parts = sign === '-' || sign === '+' ? str.substring(1) : str;
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const num = (n) => asBigInt ? BigInt(n) : Number(n);
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const res = parts
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.replace(/_/g, '')
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.split(':')
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.reduce((res, p) => res * num(60) + num(p), num(0));
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return (sign === '-' ? num(-1) * res : res);
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}
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/**
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* hhhh:mm:ss.sss
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*
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* Internal types handle bigint as number, because TS can't figure it out.
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*/
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function stringifySexagesimal(node) {
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let { value } = node;
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let num = (n) => n;
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if (typeof value === 'bigint')
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num = n => BigInt(n);
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else if (isNaN(value) || !isFinite(value))
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return stringifyNumber(node);
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let sign = '';
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if (value < 0) {
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sign = '-';
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value *= num(-1);
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}
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const _60 = num(60);
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const parts = [value % _60]; // seconds, including ms
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if (value < 60) {
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parts.unshift(0); // at least one : is required
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}
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else {
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value = (value - parts[0]) / _60;
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parts.unshift(value % _60); // minutes
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if (value >= 60) {
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value = (value - parts[0]) / _60;
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parts.unshift(value); // hours
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}
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}
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return (sign +
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parts
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.map(n => String(n).padStart(2, '0'))
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.join(':')
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.replace(/000000\d*$/, '') // % 60 may introduce error
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);
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}
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const intTime = {
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identify: value => typeof value === 'bigint' || Number.isInteger(value),
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default: true,
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tag: 'tag:yaml.org,2002:int',
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format: 'TIME',
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test: /^[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+$/,
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resolve: (str, _onError, { intAsBigInt }) => parseSexagesimal(str, intAsBigInt),
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stringify: stringifySexagesimal
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};
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const floatTime = {
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identify: value => typeof value === 'number',
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default: true,
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tag: 'tag:yaml.org,2002:float',
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format: 'TIME',
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test: /^[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+\.[0-9_]*$/,
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resolve: str => parseSexagesimal(str, false),
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stringify: stringifySexagesimal
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};
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const timestamp = {
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identify: value => value instanceof Date,
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default: true,
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tag: 'tag:yaml.org,2002:timestamp',
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// If the time zone is omitted, the timestamp is assumed to be specified in UTC. The time part
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// may be omitted altogether, resulting in a date format. In such a case, the time part is
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// assumed to be 00:00:00Z (start of day, UTC).
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test: RegExp('^([0-9]{4})-([0-9]{1,2})-([0-9]{1,2})' + // YYYY-Mm-Dd
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'(?:' + // time is optional
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'(?:t|T|[ \\t]+)' + // t | T | whitespace
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'([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2}(\\.[0-9]+)?)' + // Hh:Mm:Ss(.ss)?
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'(?:[ \\t]*(Z|[-+][012]?[0-9](?::[0-9]{2})?))?' + // Z | +5 | -03:30
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')?$'),
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resolve(str) {
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const match = str.match(timestamp.test);
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if (!match)
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throw new Error('!!timestamp expects a date, starting with yyyy-mm-dd');
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const [, year, month, day, hour, minute, second] = match.map(Number);
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const millisec = match[7] ? Number((match[7] + '00').substr(1, 3)) : 0;
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let date = Date.UTC(year, month - 1, day, hour || 0, minute || 0, second || 0, millisec);
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const tz = match[8];
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if (tz && tz !== 'Z') {
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let d = parseSexagesimal(tz, false);
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if (Math.abs(d) < 30)
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d *= 60;
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date -= 60000 * d;
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}
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return new Date(date);
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},
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stringify: ({ value }) => value.toISOString().replace(/((T00:00)?:00)?\.000Z$/, '')
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};
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export { floatTime, intTime, timestamp };
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