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Diffstat (limited to 'node_modules/moment/src/lib/units/offset.js')
-rw-r--r-- | node_modules/moment/src/lib/units/offset.js | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/node_modules/moment/src/lib/units/offset.js b/node_modules/moment/src/lib/units/offset.js new file mode 100644 index 0000000..668ebb9 --- /dev/null +++ b/node_modules/moment/src/lib/units/offset.js @@ -0,0 +1,249 @@ +import zeroFill from '../utils/zero-fill'; +import { createDuration } from '../duration/create'; +import { addSubtract } from '../moment/add-subtract'; +import { isMoment, copyConfig } from '../moment/constructor'; +import { addFormatToken } from '../format/format'; +import { addRegexToken, matchOffset, matchShortOffset } from '../parse/regex'; +import { addParseToken } from '../parse/token'; +import { createLocal } from '../create/local'; +import { prepareConfig } from '../create/from-anything'; +import { createUTC } from '../create/utc'; +import isDate from '../utils/is-date'; +import toInt from '../utils/to-int'; +import isUndefined from '../utils/is-undefined'; +import compareArrays from '../utils/compare-arrays'; +import { hooks } from '../utils/hooks'; + +// FORMATTING + +function offset(token, separator) { + addFormatToken(token, 0, 0, function () { + var offset = this.utcOffset(), + sign = '+'; + if (offset < 0) { + offset = -offset; + sign = '-'; + } + return ( + sign + + zeroFill(~~(offset / 60), 2) + + separator + + zeroFill(~~offset % 60, 2) + ); + }); +} + +offset('Z', ':'); +offset('ZZ', ''); + +// PARSING + +addRegexToken('Z', matchShortOffset); +addRegexToken('ZZ', matchShortOffset); +addParseToken(['Z', 'ZZ'], function (input, array, config) { + config._useUTC = true; + config._tzm = offsetFromString(matchShortOffset, input); +}); + +// HELPERS + +// timezone chunker +// '+10:00' > ['10', '00'] +// '-1530' > ['-15', '30'] +var chunkOffset = /([\+\-]|\d\d)/gi; + +function offsetFromString(matcher, string) { + var matches = (string || '').match(matcher), + chunk, + parts, + minutes; + + if (matches === null) { + return null; + } + + chunk = matches[matches.length - 1] || []; + parts = (chunk + '').match(chunkOffset) || ['-', 0, 0]; + minutes = +(parts[1] * 60) + toInt(parts[2]); + + return minutes === 0 ? 0 : parts[0] === '+' ? minutes : -minutes; +} + +// Return a moment from input, that is local/utc/zone equivalent to model. +export function cloneWithOffset(input, model) { + var res, diff; + if (model._isUTC) { + res = model.clone(); + diff = + (isMoment(input) || isDate(input) + ? input.valueOf() + : createLocal(input).valueOf()) - res.valueOf(); + // Use low-level api, because this fn is low-level api. + res._d.setTime(res._d.valueOf() + diff); + hooks.updateOffset(res, false); + return res; + } else { + return createLocal(input).local(); + } +} + +function getDateOffset(m) { + // On Firefox.24 Date#getTimezoneOffset returns a floating point. + // https://github.com/moment/moment/pull/1871 + return -Math.round(m._d.getTimezoneOffset()); +} + +// HOOKS + +// This function will be called whenever a moment is mutated. +// It is intended to keep the offset in sync with the timezone. +hooks.updateOffset = function () {}; + +// MOMENTS + +// keepLocalTime = true means only change the timezone, without +// affecting the local hour. So 5:31:26 +0300 --[utcOffset(2, true)]--> +// 5:31:26 +0200 It is possible that 5:31:26 doesn't exist with offset +// +0200, so we adjust the time as needed, to be valid. +// +// Keeping the time actually adds/subtracts (one hour) +// from the actual represented time. That is why we call updateOffset +// a second time. In case it wants us to change the offset again +// _changeInProgress == true case, then we have to adjust, because +// there is no such time in the given timezone. +export function getSetOffset(input, keepLocalTime, keepMinutes) { + var offset = this._offset || 0, + localAdjust; + if (!this.isValid()) { + return input != null ? this : NaN; + } + if (input != null) { + if (typeof input === 'string') { + input = offsetFromString(matchShortOffset, input); + if (input === null) { + return this; + } + } else if (Math.abs(input) < 16 && !keepMinutes) { + input = input * 60; + } + if (!this._isUTC && keepLocalTime) { + localAdjust = getDateOffset(this); + } + this._offset = input; + this._isUTC = true; + if (localAdjust != null) { + this.add(localAdjust, 'm'); + } + if (offset !== input) { + if (!keepLocalTime || this._changeInProgress) { + addSubtract( + this, + createDuration(input - offset, 'm'), + 1, + false + ); + } else if (!this._changeInProgress) { + this._changeInProgress = true; + hooks.updateOffset(this, true); + this._changeInProgress = null; + } + } + return this; + } else { + return this._isUTC ? offset : getDateOffset(this); + } +} + +export function getSetZone(input, keepLocalTime) { + if (input != null) { + if (typeof input !== 'string') { + input = -input; + } + + this.utcOffset(input, keepLocalTime); + + return this; + } else { + return -this.utcOffset(); + } +} + +export function setOffsetToUTC(keepLocalTime) { + return this.utcOffset(0, keepLocalTime); +} + +export function setOffsetToLocal(keepLocalTime) { + if (this._isUTC) { + this.utcOffset(0, keepLocalTime); + this._isUTC = false; + + if (keepLocalTime) { + this.subtract(getDateOffset(this), 'm'); + } + } + return this; +} + +export function setOffsetToParsedOffset() { + if (this._tzm != null) { + this.utcOffset(this._tzm, false, true); + } else if (typeof this._i === 'string') { + var tZone = offsetFromString(matchOffset, this._i); + if (tZone != null) { + this.utcOffset(tZone); + } else { + this.utcOffset(0, true); + } + } + return this; +} + +export function hasAlignedHourOffset(input) { + if (!this.isValid()) { + return false; + } + input = input ? createLocal(input).utcOffset() : 0; + + return (this.utcOffset() - input) % 60 === 0; +} + +export function isDaylightSavingTime() { + return ( + this.utcOffset() > this.clone().month(0).utcOffset() || + this.utcOffset() > this.clone().month(5).utcOffset() + ); +} + +export function isDaylightSavingTimeShifted() { + if (!isUndefined(this._isDSTShifted)) { + return this._isDSTShifted; + } + + var c = {}, + other; + + copyConfig(c, this); + c = prepareConfig(c); + + if (c._a) { + other = c._isUTC ? createUTC(c._a) : createLocal(c._a); + this._isDSTShifted = + this.isValid() && compareArrays(c._a, other.toArray()) > 0; + } else { + this._isDSTShifted = false; + } + + return this._isDSTShifted; +} + +export function isLocal() { + return this.isValid() ? !this._isUTC : false; +} + +export function isUtcOffset() { + return this.isValid() ? this._isUTC : false; +} + +export function isUtc() { + return this.isValid() ? this._isUTC && this._offset === 0 : false; +} |