devextreme
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HTML5 JavaScript Component Suite for Responsive Web Development
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JavaScript
/**
* DevExtreme (cjs/common/core/localization/ldml/date.format.js)
* Version: 24.2.6
* Build date: Mon Mar 17 2025
*
* Copyright (c) 2012 - 2025 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
;
exports.getFormat = void 0;
var _number = _interopRequireDefault(require("../number"));
function _interopRequireDefault(e) {
return e && e.__esModule ? e : {
default: e
}
}
const ARABIC_COMMA = "\u060c";
const FORMAT_SEPARATORS = " .,:;/\\<>()-[]\u060c";
const AM_PM_PATTERN = ". m.";
const checkDigit = function(char) {
const code = char && _number.default.convertDigits(char, false).charCodeAt(0);
const zeroCode = _number.default.convertDigits("0", false).charCodeAt(0);
return zeroCode <= code && code < zeroCode + 10
};
const checkPatternContinue = function(text, patterns, index, isDigit) {
const char = text[index];
const nextChar = text[index + 1];
if (!isDigit) {
if ("." === char || " " === char && ". m." === text.slice(index - 1, index + 3)) {
return true
}
if ("-" === char && !checkDigit(nextChar)) {
return true
}
}
const isDigitChanged = isDigit && patterns.some((pattern => text[index] !== pattern[index]));
return FORMAT_SEPARATORS.indexOf(char) < 0 && isDigit === checkDigit(char) && (!isDigit || isDigitChanged)
};
const getPatternStartIndex = function(defaultPattern, index) {
if (!checkDigit(defaultPattern[index])) {
while (index > 0 && !checkDigit(defaultPattern[index - 1]) && ("." === defaultPattern[index - 1] || FORMAT_SEPARATORS.indexOf(defaultPattern[index - 1]) < 0)) {
index--
}
}
return index
};
const getDifference = function(defaultPattern, patterns, processedIndexes, isDigit) {
let i = 0;
const result = [];
const patternsFilter = function(pattern) {
return defaultPattern[i] !== pattern[i] && (void 0 === isDigit || checkDigit(defaultPattern[i]) === isDigit)
};
if (!Array.isArray(patterns)) {
patterns = [patterns]
}
for (i = 0; i < defaultPattern.length; i++) {
if (processedIndexes.indexOf(i) < 0 && patterns.filter(patternsFilter).length) {
i = getPatternStartIndex(defaultPattern, i);
do {
isDigit = checkDigit(defaultPattern[i]);
if (!result.length && !isDigit && checkDigit(patterns[0][i])) {
break
}
result.push(i);
processedIndexes.unshift(i);
i++
} while (defaultPattern[i] && checkPatternContinue(defaultPattern, patterns, i, isDigit));
break
}
}
if (1 === result.length && ("0" === defaultPattern[processedIndexes[0] - 1] || "\u0660" === defaultPattern[processedIndexes[0] - 1])) {
processedIndexes.unshift(processedIndexes[0] - 1)
}
return result
};
const replaceCharsCore = function(pattern, indexes, char, patternPositions) {
const baseCharIndex = indexes[0];
const patternIndex = baseCharIndex < patternPositions.length ? patternPositions[baseCharIndex] : baseCharIndex;
indexes.forEach((function(_, index) {
pattern = pattern.substr(0, patternIndex + index) + (char.length > 1 ? char[index] : char) + pattern.substr(patternIndex + index + 1)
}));
if (1 === indexes.length) {
pattern = pattern.replace("0" + char, char + char);
pattern = pattern.replace("\u0660" + char, char + char)
}
return pattern
};
const replaceChars = function(pattern, indexes, char, patternPositions) {
let i;
let index;
let patternIndex;
if (!checkDigit(pattern[indexes[0]] || "0")) {
const letterCount = Math.max(indexes.length <= 3 ? 3 : 4, char.length);
while (indexes.length > letterCount) {
index = indexes.pop();
patternIndex = patternPositions[index];
patternPositions[index] = -1;
for (i = index + 1; i < patternPositions.length; i++) {
patternPositions[i]--
}
pattern = pattern.substr(0, patternIndex) + pattern.substr(patternIndex + 1)
}
index = indexes[indexes.length - 1] + 1, patternIndex = index < patternPositions.length ? patternPositions[index] : index;
while (indexes.length < letterCount) {
indexes.push(indexes[indexes.length - 1] + 1);
for (i = index; i < patternPositions.length; i++) {
patternPositions[i]++
}
pattern = pattern.substr(0, patternIndex) + " " + pattern.substr(patternIndex)
}
}
pattern = replaceCharsCore(pattern, indexes, char, patternPositions);
return pattern
};
const formatValue = function(value, formatter) {
if (Array.isArray(value)) {
return value.map((function(value) {
return (formatter(value) || "").toString()
}))
}
return (formatter(value) || "").toString()
};
const ESCAPE_CHARS_REGEXP = /[a-zA-Z]/g;
const escapeChars = function(pattern, defaultPattern, processedIndexes, patternPositions) {
const escapeIndexes = defaultPattern.split("").map((function(char, index) {
if (processedIndexes.indexOf(index) < 0 && (char.match(ESCAPE_CHARS_REGEXP) || "'" === char)) {
return patternPositions[index]
}
return -1
}));
pattern = pattern.split("").map((function(char, index) {
let result = char;
const isCurrentCharEscaped = escapeIndexes.indexOf(index) >= 0;
const isPrevCharEscaped = index > 0 && escapeIndexes.indexOf(index - 1) >= 0;
const isNextCharEscaped = escapeIndexes.indexOf(index + 1) >= 0;
if (isCurrentCharEscaped) {
if (!isPrevCharEscaped) {
result = "'" + result
}
if (!isNextCharEscaped) {
result += "'"
}
}
return result
})).join("");
return pattern
};
const getFormat = function(formatter) {
const processedIndexes = [];
const defaultPattern = formatValue(new Date(2009, 8, 8, 6, 5, 4), formatter);
const patternPositions = defaultPattern.split("").map((function(_, index) {
return index
}));
let result = defaultPattern;
const replacedPatterns = {};
const datePatterns = [{
date: new Date(2009, 8, 8, 6, 5, 4, 111),
pattern: "S"
}, {
date: new Date(2009, 8, 8, 6, 5, 2),
pattern: "s"
}, {
date: new Date(2009, 8, 8, 6, 2, 4),
pattern: "m"
}, {
date: new Date(2009, 8, 8, 18, 5, 4),
pattern: "H",
isDigit: true
}, {
date: new Date(2009, 8, 8, 2, 5, 4),
pattern: "h",
isDigit: true
}, {
date: new Date(2009, 8, 8, 18, 5, 4),
pattern: "a",
isDigit: false
}, {
date: new Date(2009, 8, 1, 6, 5, 4),
pattern: "d"
}, {
date: [new Date(2009, 8, 2, 6, 5, 4), new Date(2009, 8, 3, 6, 5, 4), new Date(2009, 8, 4, 6, 5, 4)],
pattern: "E"
}, {
date: new Date(2009, 9, 6, 6, 5, 4),
pattern: "M"
}, {
date: new Date(1998, 8, 8, 6, 5, 4),
pattern: "y"
}];
if (!result) {
return
}
datePatterns.forEach((function(test) {
const diff = getDifference(defaultPattern, formatValue(test.date, formatter), processedIndexes, test.isDigit);
const pattern = "M" === test.pattern && !replacedPatterns.d ? "L" : test.pattern;
result = replaceChars(result, diff, pattern, patternPositions);
replacedPatterns[pattern] = diff.length
}));
result = escapeChars(result, defaultPattern, processedIndexes, patternPositions);
if (processedIndexes.length) {
return result
}
};
exports.getFormat = getFormat;