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 王天杨
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"use strict";
exports.lightFormat = lightFormat;
Object.defineProperty(exports, "lightFormatters", {
enumerable: true,
get: function () {
return _index3.lightFormatters;
},
});
var _index = require("./isValid.js");
var _index2 = require("./toDate.js");
var _index3 = require("./_lib/format/lightFormatters.js");
// Rexports of internal for libraries to use.
// See: https://github.com/date-fns/date-fns/issues/3638#issuecomment-1877082874
// This RegExp consists of three parts separated by `|`:
// - (\w)\1* matches any sequences of the same letter
// - '' matches two quote characters in a row
// - '(''|[^'])+('|$) matches anything surrounded by two quote characters ('),
// except a single quote symbol, which ends the sequence.
// Two quote characters do not end the sequence.
// If there is no matching single quote
// then the sequence will continue until the end of the string.
// - . matches any single character unmatched by previous parts of the RegExps
const formattingTokensRegExp = /(\w)\1*|''|'(''|[^'])+('|$)|./g;
const escapedStringRegExp = /^'([^]*?)'?$/;
const doubleQuoteRegExp = /''/g;
const unescapedLatinCharacterRegExp = /[a-zA-Z]/;
/**
* @private
*/
/**
* @name lightFormat
* @category Common Helpers
* @summary Format the date.
*
* @description
* Return the formatted date string in the given format. Unlike `format`,
* `lightFormat` doesn't use locales and outputs date using the most popular tokens.
*
* > ⚠️ Please note that the `lightFormat` tokens differ from Moment.js and other libraries.
* > See: https://github.com/date-fns/date-fns/blob/master/docs/unicodeTokens.md
*
* The characters wrapped between two single quotes characters (') are escaped.
* Two single quotes in a row, whether inside or outside a quoted sequence, represent a 'real' single quote.
*
* Format of the string is based on Unicode Technical Standard #35:
* https://www.unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table
*
* Accepted patterns:
* | Unit | Pattern | Result examples |
* |---------------------------------|---------|-----------------------------------|
* | AM, PM | a..aaa | AM, PM |
* | | aaaa | a.m., p.m. |
* | | aaaaa | a, p |
* | Calendar year | y | 44, 1, 1900, 2017 |
* | | yy | 44, 01, 00, 17 |
* | | yyy | 044, 001, 000, 017 |
* | | yyyy | 0044, 0001, 1900, 2017 |
* | Month (formatting) | M | 1, 2, ..., 12 |
* | | MM | 01, 02, ..., 12 |
* | Day of month | d | 1, 2, ..., 31 |
* | | dd | 01, 02, ..., 31 |
* | Hour [1-12] | h | 1, 2, ..., 11, 12 |
* | | hh | 01, 02, ..., 11, 12 |
* | Hour [0-23] | H | 0, 1, 2, ..., 23 |
* | | HH | 00, 01, 02, ..., 23 |
* | Minute | m | 0, 1, ..., 59 |
* | | mm | 00, 01, ..., 59 |
* | Second | s | 0, 1, ..., 59 |
* | | ss | 00, 01, ..., 59 |
* | Fraction of second | S | 0, 1, ..., 9 |
* | | SS | 00, 01, ..., 99 |
* | | SSS | 000, 001, ..., 999 |
* | | SSSS | ... |
*
* @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
*
* @param date - The original date
* @param format - The string of tokens
*
* @returns The formatted date string
*
* @throws `Invalid time value` if the date is invalid
* @throws format string contains an unescaped latin alphabet character
*
* @example
* const result = lightFormat(new Date(2014, 1, 11), 'yyyy-MM-dd')
* //=> '2014-02-11'
*/
function lightFormat(date, formatStr) {
const _date = (0, _index2.toDate)(date);
if (!(0, _index.isValid)(_date)) {
throw new RangeError("Invalid time value");
}
const tokens = formatStr.match(formattingTokensRegExp);
// The only case when formattingTokensRegExp doesn't match the string is when it's empty
if (!tokens) return "";
const result = tokens
.map((substring) => {
// Replace two single quote characters with one single quote character
if (substring === "''") {
return "'";
}
const firstCharacter = substring[0];
if (firstCharacter === "'") {
return cleanEscapedString(substring);
}
const formatter = _index3.lightFormatters[firstCharacter];
if (formatter) {
return formatter(_date, substring);
}
if (firstCharacter.match(unescapedLatinCharacterRegExp)) {
throw new RangeError(
"Format string contains an unescaped latin alphabet character `" +
firstCharacter +
"`",
);
}
return substring;
})
.join("");
return result;
}
function cleanEscapedString(input) {
const matches = input.match(escapedStringRegExp);
if (!matches) {
return input;
}
return matches[1].replace(doubleQuoteRegExp, "'");
}
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