mirror of
https://github.com/scottlamb/moonfire-nvr.git
synced 2025-04-13 15:59:41 -04:00
dd66c7b0dd
Besides being more clear about what belongs to which, this helps with docker caching. The server and ui parts are only rebuilt when their respective subdirectories change. Extend this a bit further by making the webpack build not depend on the target architecture. And adding cache dirs so parts of the server and ui build process can be reused when layer-wide caching fails.
135 lines
4.4 KiB
JavaScript
135 lines
4.4 KiB
JavaScript
// vim: set et sw=2 ts=2:
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//
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// This file is part of Moonfire NVR, a security camera network video recorder.
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// Copyright (C) 2018 The Moonfire NVR Authors
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// In addition, as a special exception, the copyright holders give
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// permission to link the code of portions of this program with the
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// OpenSSL library under certain conditions as described in each
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// individual source file, and distribute linked combinations including
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// the two.
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//
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// You must obey the GNU General Public License in all respects for all
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// of the code used other than OpenSSL. If you modify file(s) with this
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// exception, you may extend this exception to your version of the
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// file(s), but you are not obligated to do so. If you do not wish to do
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// so, delete this exception statement from your version. If you delete
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// this exception statement from all source files in the program, then
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// also delete it here.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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import moment from 'moment-timezone';
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/**
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* Regular expression for parsing time format from timestamps.
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*
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* These regex captures groups:
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* 0: whole match or null if none
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* 1: HH:MM portion, or undefined
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* 2: :ss portion, or undefined
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* 3: FFFFF portion, or undefined
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* 4: [+-]hh[:mm] portion, or undefined
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*
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* @type {RegExp}
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*/
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const timeRe = new RegExp(
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[
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'^', // Start
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'([0-9]{1,2}:[0-9]{2})', // Capture HH:MM
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'(?:(:[0-9]{2})(?::([0-9]{5}))?)?', // Capture [:ss][:FFFFF]
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'([+-][0-9]{1,2}:?(?:[0-9]{2})?)?', // Capture [+-][zone]
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'$', // End
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].join('')
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);
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/**
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* Class to parse time strings that possibly contain fractional
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* seconds in 90k units into a Number representation.
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*
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* The general format:
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* Expected timestamps are in this format:
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* HH:MM[:ss][:FFFFF][[+-]hh[:mm]]
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* where
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* HH = hours in one or two digits
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* MM = minutes in one or two digits
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* ss = seconds in one or two digits
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* FFFFF = fractional seconds in 90k units in exactly 5 digits
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* hh = hours of timezone offset in one or two digits
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* mm = minutes of timezone offset in one or two digits
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*
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*/
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export default class Time90kParser {
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/**
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* Construct with specific timezone.
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*
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* @param {String} tz Timezone
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*/
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constructor(tz) {
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self._tz = tz;
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}
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/**
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* Set (another) timezone.
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*
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* @param {String} tz Timezone
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*/
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set tz(tz) {
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self._tz = tz;
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}
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/**
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* Parses the given date and time string into a valid time90k or null.
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*
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* The date and time strings must be compatible with the partial ISO-8601
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* formats for each, or acceptable to the standard Date object.
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*
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* If only a date is specified and dateOnlyThenEndOfDay is false, the 00:00
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* timestamp for that day is returned. If dateOnlyThenEndOfDay is true, the
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* 00:00 of the very next day is returned.
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*
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* @param {String} dateStr String representing date
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* @param {String} timeStr String representing time
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* @param {Boolean} dateOnlyThenEndOfDay If only a date was specified and
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* this is true, then return time
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* for the end of day
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* @return {Number} Timestamp in 90k units, or null if parsing failed
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*/
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parseDateTime90k(dateStr, timeStr, dateOnlyThenEndOfDay) {
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// If just date, no special handling needed
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if (!timeStr) {
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const m = moment.tz(dateStr, self._tz);
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if (dateOnlyThenEndOfDay) {
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m.add({days: 1});
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}
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return m.valueOf() * 90;
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}
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const [match, hhmm, ss, fffff, tz] = timeRe.exec(timeStr) || [];
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if (!match) {
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return null;
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}
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const orBlank = (s) => s || '';
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const datetimeStr = dateStr + 'T' + hhmm + orBlank(ss) + orBlank(tz);
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const m = moment.tz(datetimeStr, self._tz);
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if (!m.isValid()) {
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return null;
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}
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const frac = fffff === undefined ? 0 : parseInt(fffff, 10);
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return m.valueOf() * 90 + frac;
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}
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}
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