| 1 | import { isValid } from "./isValid.js";
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| 2 | import { parse } from "./parse.js";
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| 3 |
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| 4 | /**
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| 5 | * The {@link isMatch} function options.
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| 6 | */
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| 7 |
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| 8 | /**
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| 9 | * @name isMatch
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| 10 | * @category Common Helpers
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| 11 | * @summary validates the date string against given formats
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| 12 | *
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| 13 | * @description
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| 14 | * Return the true if given date is string correct against the given format else
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| 15 | * will return false.
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| 16 | *
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| 17 | * > ⚠️ Please note that the `format` tokens differ from Moment.js and other libraries.
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| 18 | * > See: https://github.com/date-fns/date-fns/blob/master/docs/unicodeTokens.md
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| 19 | *
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| 20 | * The characters in the format string wrapped between two single quotes characters (') are escaped.
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| 21 | * Two single quotes in a row, whether inside or outside a quoted sequence, represent a 'real' single quote.
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| 22 | *
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| 23 | * Format of the format string is based on Unicode Technical Standard #35:
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| 24 | * https://www.unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table
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| 25 | * with a few additions (see note 5 below the table).
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| 26 | *
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| 27 | * Not all tokens are compatible. Combinations that don't make sense or could lead to bugs are prohibited
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| 28 | * and will throw `RangeError`. For example usage of 24-hour format token with AM/PM token will throw an exception:
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| 29 | *
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| 30 | * ```javascript
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| 31 | * isMatch('23 AM', 'HH a')
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| 32 | * //=> RangeError: The format string mustn't contain `HH` and `a` at the same time
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| 33 | * ```
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| 34 | *
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| 35 | * See the compatibility table: https://docs.google.com/spreadsheets/d/e/2PACX-1vQOPU3xUhplll6dyoMmVUXHKl_8CRDs6_ueLmex3SoqwhuolkuN3O05l4rqx5h1dKX8eb46Ul-CCSrq/pubhtml?gid=0&single=true
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| 36 | *
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| 37 | * Accepted format string patterns:
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| 38 | * | Unit |Prior| Pattern | Result examples | Notes |
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| 39 | * |---------------------------------|-----|---------|-----------------------------------|-------|
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| 40 | * | Era | 140 | G..GGG | AD, BC | |
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| 41 | * | | | GGGG | Anno Domini, Before Christ | 2 |
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| 42 | * | | | GGGGG | A, B | |
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| 43 | * | Calendar year | 130 | y | 44, 1, 1900, 2017, 9999 | 4 |
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| 44 | * | | | yo | 44th, 1st, 1900th, 9999999th | 4,5 |
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| 45 | * | | | yy | 44, 01, 00, 17 | 4 |
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| 46 | * | | | yyy | 044, 001, 123, 999 | 4 |
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| 47 | * | | | yyyy | 0044, 0001, 1900, 2017 | 4 |
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| 48 | * | | | yyyyy | ... | 2,4 |
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| 49 | * | Local week-numbering year | 130 | Y | 44, 1, 1900, 2017, 9000 | 4 |
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| 50 | * | | | Yo | 44th, 1st, 1900th, 9999999th | 4,5 |
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| 51 | * | | | YY | 44, 01, 00, 17 | 4,6 |
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| 52 | * | | | YYY | 044, 001, 123, 999 | 4 |
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| 53 | * | | | YYYY | 0044, 0001, 1900, 2017 | 4,6 |
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| 54 | * | | | YYYYY | ... | 2,4 |
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| 55 | * | ISO week-numbering year | 130 | R | -43, 1, 1900, 2017, 9999, -9999 | 4,5 |
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| 56 | * | | | RR | -43, 01, 00, 17 | 4,5 |
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| 57 | * | | | RRR | -043, 001, 123, 999, -999 | 4,5 |
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| 58 | * | | | RRRR | -0043, 0001, 2017, 9999, -9999 | 4,5 |
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| 59 | * | | | RRRRR | ... | 2,4,5 |
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| 60 | * | Extended year | 130 | u | -43, 1, 1900, 2017, 9999, -999 | 4 |
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| 61 | * | | | uu | -43, 01, 99, -99 | 4 |
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| 62 | * | | | uuu | -043, 001, 123, 999, -999 | 4 |
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| 63 | * | | | uuuu | -0043, 0001, 2017, 9999, -9999 | 4 |
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| 64 | * | | | uuuuu | ... | 2,4 |
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| 65 | * | Quarter (formatting) | 120 | Q | 1, 2, 3, 4 | |
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| 66 | * | | | Qo | 1st, 2nd, 3rd, 4th | 5 |
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| 67 | * | | | QQ | 01, 02, 03, 04 | |
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| 68 | * | | | QQQ | Q1, Q2, Q3, Q4 | |
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| 69 | * | | | QQQQ | 1st quarter, 2nd quarter, ... | 2 |
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| 70 | * | | | QQQQQ | 1, 2, 3, 4 | 4 |
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| 71 | * | Quarter (stand-alone) | 120 | q | 1, 2, 3, 4 | |
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| 72 | * | | | qo | 1st, 2nd, 3rd, 4th | 5 |
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| 73 | * | | | qq | 01, 02, 03, 04 | |
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| 74 | * | | | qqq | Q1, Q2, Q3, Q4 | |
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| 75 | * | | | qqqq | 1st quarter, 2nd quarter, ... | 2 |
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| 76 | * | | | qqqqq | 1, 2, 3, 4 | 3 |
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| 77 | * | Month (formatting) | 110 | M | 1, 2, ..., 12 | |
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| 78 | * | | | Mo | 1st, 2nd, ..., 12th | 5 |
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| 79 | * | | | MM | 01, 02, ..., 12 | |
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| 80 | * | | | MMM | Jan, Feb, ..., Dec | |
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| 81 | * | | | MMMM | January, February, ..., December | 2 |
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| 82 | * | | | MMMMM | J, F, ..., D | |
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| 83 | * | Month (stand-alone) | 110 | L | 1, 2, ..., 12 | |
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| 84 | * | | | Lo | 1st, 2nd, ..., 12th | 5 |
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| 85 | * | | | LL | 01, 02, ..., 12 | |
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| 86 | * | | | LLL | Jan, Feb, ..., Dec | |
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| 87 | * | | | LLLL | January, February, ..., December | 2 |
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| 88 | * | | | LLLLL | J, F, ..., D | |
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| 89 | * | Local week of year | 100 | w | 1, 2, ..., 53 | |
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| 90 | * | | | wo | 1st, 2nd, ..., 53th | 5 |
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| 91 | * | | | ww | 01, 02, ..., 53 | |
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| 92 | * | ISO week of year | 100 | I | 1, 2, ..., 53 | 5 |
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| 93 | * | | | Io | 1st, 2nd, ..., 53th | 5 |
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| 94 | * | | | II | 01, 02, ..., 53 | 5 |
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| 95 | * | Day of month | 90 | d | 1, 2, ..., 31 | |
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| 96 | * | | | do | 1st, 2nd, ..., 31st | 5 |
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| 97 | * | | | dd | 01, 02, ..., 31 | |
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| 98 | * | Day of year | 90 | D | 1, 2, ..., 365, 366 | 7 |
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| 99 | * | | | Do | 1st, 2nd, ..., 365th, 366th | 5 |
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| 100 | * | | | DD | 01, 02, ..., 365, 366 | 7 |
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| 101 | * | | | DDD | 001, 002, ..., 365, 366 | |
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| 102 | * | | | DDDD | ... | 2 |
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| 103 | * | Day of week (formatting) | 90 | E..EEE | Mon, Tue, Wed, ..., Su | |
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| 104 | * | | | EEEE | Monday, Tuesday, ..., Sunday | 2 |
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| 105 | * | | | EEEEE | M, T, W, T, F, S, S | |
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| 106 | * | | | EEEEEE | Mo, Tu, We, Th, Fr, Sa, Su | |
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| 107 | * | ISO day of week (formatting) | 90 | i | 1, 2, 3, ..., 7 | 5 |
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| 108 | * | | | io | 1st, 2nd, ..., 7th | 5 |
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| 109 | * | | | ii | 01, 02, ..., 07 | 5 |
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| 110 | * | | | iii | Mon, Tue, Wed, ..., Su | 5 |
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| 111 | * | | | iiii | Monday, Tuesday, ..., Sunday | 2,5 |
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| 112 | * | | | iiiii | M, T, W, T, F, S, S | 5 |
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| 113 | * | | | iiiiii | Mo, Tu, We, Th, Fr, Sa, Su | 5 |
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| 114 | * | Local day of week (formatting) | 90 | e | 2, 3, 4, ..., 1 | |
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| 115 | * | | | eo | 2nd, 3rd, ..., 1st | 5 |
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| 116 | * | | | ee | 02, 03, ..., 01 | |
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| 117 | * | | | eee | Mon, Tue, Wed, ..., Su | |
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| 118 | * | | | eeee | Monday, Tuesday, ..., Sunday | 2 |
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| 119 | * | | | eeeee | M, T, W, T, F, S, S | |
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| 120 | * | | | eeeeee | Mo, Tu, We, Th, Fr, Sa, Su | |
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| 121 | * | Local day of week (stand-alone) | 90 | c | 2, 3, 4, ..., 1 | |
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| 122 | * | | | co | 2nd, 3rd, ..., 1st | 5 |
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| 123 | * | | | cc | 02, 03, ..., 01 | |
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| 124 | * | | | ccc | Mon, Tue, Wed, ..., Su | |
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| 125 | * | | | cccc | Monday, Tuesday, ..., Sunday | 2 |
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| 126 | * | | | ccccc | M, T, W, T, F, S, S | |
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| 127 | * | | | cccccc | Mo, Tu, We, Th, Fr, Sa, Su | |
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| 128 | * | AM, PM | 80 | a..aaa | AM, PM | |
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| 129 | * | | | aaaa | a.m., p.m. | 2 |
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| 130 | * | | | aaaaa | a, p | |
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| 131 | * | AM, PM, noon, midnight | 80 | b..bbb | AM, PM, noon, midnight | |
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| 132 | * | | | bbbb | a.m., p.m., noon, midnight | 2 |
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| 133 | * | | | bbbbb | a, p, n, mi | |
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| 134 | * | Flexible day period | 80 | B..BBB | at night, in the morning, ... | |
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| 135 | * | | | BBBB | at night, in the morning, ... | 2 |
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| 136 | * | | | BBBBB | at night, in the morning, ... | |
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| 137 | * | Hour [1-12] | 70 | h | 1, 2, ..., 11, 12 | |
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| 138 | * | | | ho | 1st, 2nd, ..., 11th, 12th | 5 |
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| 139 | * | | | hh | 01, 02, ..., 11, 12 | |
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| 140 | * | Hour [0-23] | 70 | H | 0, 1, 2, ..., 23 | |
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| 141 | * | | | Ho | 0th, 1st, 2nd, ..., 23rd | 5 |
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| 142 | * | | | HH | 00, 01, 02, ..., 23 | |
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| 143 | * | Hour [0-11] | 70 | K | 1, 2, ..., 11, 0 | |
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| 144 | * | | | Ko | 1st, 2nd, ..., 11th, 0th | 5 |
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| 145 | * | | | KK | 01, 02, ..., 11, 00 | |
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| 146 | * | Hour [1-24] | 70 | k | 24, 1, 2, ..., 23 | |
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| 147 | * | | | ko | 24th, 1st, 2nd, ..., 23rd | 5 |
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| 148 | * | | | kk | 24, 01, 02, ..., 23 | |
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| 149 | * | Minute | 60 | m | 0, 1, ..., 59 | |
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| 150 | * | | | mo | 0th, 1st, ..., 59th | 5 |
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| 151 | * | | | mm | 00, 01, ..., 59 | |
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| 152 | * | Second | 50 | s | 0, 1, ..., 59 | |
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| 153 | * | | | so | 0th, 1st, ..., 59th | 5 |
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| 154 | * | | | ss | 00, 01, ..., 59 | |
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| 155 | * | Seconds timestamp | 40 | t | 512969520 | |
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| 156 | * | | | tt | ... | 2 |
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| 157 | * | Fraction of second | 30 | S | 0, 1, ..., 9 | |
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| 158 | * | | | SS | 00, 01, ..., 99 | |
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| 159 | * | | | SSS | 000, 001, ..., 999 | |
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| 160 | * | | | SSSS | ... | 2 |
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| 161 | * | Milliseconds timestamp | 20 | T | 512969520900 | |
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| 162 | * | | | TT | ... | 2 |
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| 163 | * | Timezone (ISO-8601 w/ Z) | 10 | X | -08, +0530, Z | |
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| 164 | * | | | XX | -0800, +0530, Z | |
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| 165 | * | | | XXX | -08:00, +05:30, Z | |
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| 166 | * | | | XXXX | -0800, +0530, Z, +123456 | 2 |
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| 167 | * | | | XXXXX | -08:00, +05:30, Z, +12:34:56 | |
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| 168 | * | Timezone (ISO-8601 w/o Z) | 10 | x | -08, +0530, +00 | |
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| 169 | * | | | xx | -0800, +0530, +0000 | |
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| 170 | * | | | xxx | -08:00, +05:30, +00:00 | 2 |
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| 171 | * | | | xxxx | -0800, +0530, +0000, +123456 | |
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| 172 | * | | | xxxxx | -08:00, +05:30, +00:00, +12:34:56 | |
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| 173 | * | Long localized date | NA | P | 05/29/1453 | 5,8 |
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| 174 | * | | | PP | May 29, 1453 | |
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| 175 | * | | | PPP | May 29th, 1453 | |
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| 176 | * | | | PPPP | Sunday, May 29th, 1453 | 2,5,8 |
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| 177 | * | Long localized time | NA | p | 12:00 AM | 5,8 |
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| 178 | * | | | pp | 12:00:00 AM | |
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| 179 | * | Combination of date and time | NA | Pp | 05/29/1453, 12:00 AM | |
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| 180 | * | | | PPpp | May 29, 1453, 12:00:00 AM | |
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| 181 | * | | | PPPpp | May 29th, 1453 at ... | |
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| 182 | * | | | PPPPpp | Sunday, May 29th, 1453 at ... | 2,5,8 |
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| 183 | * Notes:
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| 184 | * 1. "Formatting" units (e.g. formatting quarter) in the default en-US locale
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| 185 | * are the same as "stand-alone" units, but are different in some languages.
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| 186 | * "Formatting" units are declined according to the rules of the language
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| 187 | * in the context of a date. "Stand-alone" units are always nominative singular.
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| 188 | * In `format` function, they will produce different result:
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| 189 | *
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| 190 | * `format(new Date(2017, 10, 6), 'do LLLL', {locale: cs}) //=> '6. listopad'`
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| 191 | *
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| 192 | * `format(new Date(2017, 10, 6), 'do MMMM', {locale: cs}) //=> '6. listopadu'`
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| 193 | *
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| 194 | * `isMatch` will try to match both formatting and stand-alone units interchangeably.
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| 195 | *
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| 196 | * 2. Any sequence of the identical letters is a pattern, unless it is escaped by
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| 197 | * the single quote characters (see below).
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| 198 | * If the sequence is longer than listed in table:
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| 199 | * - for numerical units (`yyyyyyyy`) `isMatch` will try to match a number
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| 200 | * as wide as the sequence
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| 201 | * - for text units (`MMMMMMMM`) `isMatch` will try to match the widest variation of the unit.
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| 202 | * These variations are marked with "2" in the last column of the table.
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| 203 | *
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| 204 | * 3. `QQQQQ` and `qqqqq` could be not strictly numerical in some locales.
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| 205 | * These tokens represent the shortest form of the quarter.
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| 206 | *
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| 207 | * 4. The main difference between `y` and `u` patterns are B.C. years:
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| 208 | *
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| 209 | * | Year | `y` | `u` |
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| 210 | * |------|-----|-----|
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| 211 | * | AC 1 | 1 | 1 |
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| 212 | * | BC 1 | 1 | 0 |
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| 213 | * | BC 2 | 2 | -1 |
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| 214 | *
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| 215 | * Also `yy` will try to guess the century of two digit year by proximity with `referenceDate`:
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| 216 | *
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| 217 | * `isMatch('50', 'yy') //=> true`
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| 218 | *
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| 219 | * `isMatch('75', 'yy') //=> true`
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| 220 | *
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| 221 | * while `uu` will use the year as is:
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| 222 | *
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| 223 | * `isMatch('50', 'uu') //=> true`
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| 224 | *
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| 225 | * `isMatch('75', 'uu') //=> true`
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| 226 | *
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| 227 | * The same difference is true for local and ISO week-numbering years (`Y` and `R`),
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| 228 | * except local week-numbering years are dependent on `options.weekStartsOn`
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| 229 | * and `options.firstWeekContainsDate` (compare [setISOWeekYear](https://date-fns.org/docs/setISOWeekYear)
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| 230 | * and [setWeekYear](https://date-fns.org/docs/setWeekYear)).
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| 231 | *
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| 232 | * 5. These patterns are not in the Unicode Technical Standard #35:
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| 233 | * - `i`: ISO day of week
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| 234 | * - `I`: ISO week of year
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| 235 | * - `R`: ISO week-numbering year
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| 236 | * - `o`: ordinal number modifier
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| 237 | * - `P`: long localized date
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| 238 | * - `p`: long localized time
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| 239 | *
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| 240 | * 6. `YY` and `YYYY` tokens represent week-numbering years but they are often confused with years.
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| 241 | * You should enable `options.useAdditionalWeekYearTokens` to use them. See: https://github.com/date-fns/date-fns/blob/master/docs/unicodeTokens.md
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| 242 | *
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| 243 | * 7. `D` and `DD` tokens represent days of the year but they are often confused with days of the month.
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| 244 | * You should enable `options.useAdditionalDayOfYearTokens` to use them. See: https://github.com/date-fns/date-fns/blob/master/docs/unicodeTokens.md
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| 245 | *
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| 246 | * 8. `P+` tokens do not have a defined priority since they are merely aliases to other tokens based
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| 247 | * on the given locale.
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| 248 | *
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| 249 | * using `en-US` locale: `P` => `MM/dd/yyyy`
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| 250 | * using `en-US` locale: `p` => `hh:mm a`
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| 251 | * using `pt-BR` locale: `P` => `dd/MM/yyyy`
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| 252 | * using `pt-BR` locale: `p` => `HH:mm`
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| 253 | *
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| 254 | * Values will be checked in the descending order of its unit's priority.
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| 255 | * Units of an equal priority overwrite each other in the order of appearance.
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| 256 | *
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| 257 | * If no values of higher priority are matched (e.g. when matching string 'January 1st' without a year),
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| 258 | * the values will be taken from today's using `new Date()` date which works as a context of parsing.
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| 259 | *
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| 260 | * The result may vary by locale.
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| 261 | *
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| 262 | * If `formatString` matches with `dateString` but does not provides tokens, `referenceDate` will be returned.
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| 263 | *
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| 264 | * @param dateStr - The date string to verify
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| 265 | * @param format - The string of tokens
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| 266 | * @param options - An object with options.
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| 267 | * see: https://github.com/date-fns/date-fns/blob/master/docs/unicodeTokens.md
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| 268 | * see: https://github.com/date-fns/date-fns/blob/master/docs/unicodeTokens.md
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| 269 | *
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| 270 | * @returns Is format string a match for date string?
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| 271 | *
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| 272 | * @throws `options.locale` must contain `match` property
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| 273 | * @throws use `yyyy` instead of `YYYY` for formatting years; see: https://github.com/date-fns/date-fns/blob/master/docs/unicodeTokens.md
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| 274 | * @throws use `yy` instead of `YY` for formatting years; see: https://github.com/date-fns/date-fns/blob/master/docs/unicodeTokens.md
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| 275 | * @throws use `d` instead of `D` for formatting days of the month; see: https://github.com/date-fns/date-fns/blob/master/docs/unicodeTokens.md
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| 276 | * @throws use `dd` instead of `DD` for formatting days of the month; see: https://github.com/date-fns/date-fns/blob/master/docs/unicodeTokens.md
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| 277 | * @throws format string contains an unescaped latin alphabet character
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| 278 | *
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| 279 | * @example
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| 280 | * // Match 11 February 2014 from middle-endian format:
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| 281 | * const result = isMatch('02/11/2014', 'MM/dd/yyyy')
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| 282 | * //=> true
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| 283 | *
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| 284 | * @example
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| 285 | * // Match 28th of February in Esperanto locale in the context of 2010 year:
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| 286 | * import eo from 'date-fns/locale/eo'
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| 287 | * const result = isMatch('28-a de februaro', "do 'de' MMMM", {
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| 288 | * locale: eo
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| 289 | * })
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| 290 | * //=> true
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| 291 | */
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| 292 | export function isMatch(dateStr, formatStr, options) {
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| 293 | return isValid(parse(dateStr, formatStr, new Date(), options));
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| 294 | }
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| 295 |
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| 296 | // Fallback for modularized imports:
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| 297 | export default isMatch;
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