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Merge pull request #18885 from Snuffleupagus/PDFDateString-regex

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Move the regular expression caching into the `PDFDateString` class
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Tim van der Meij 2024-10-11 19:32:13 +02:00 committed by GitHub
commit 02b33b970b
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1 changed files with 4 additions and 4 deletions
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8
src/display/display_utils.js
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@ -935,9 +935,9 @@ function deprecated(details) {
console.log("Deprecated API usage: " + details); console.log("Deprecated API usage: " + details);
} }
let pdfDateStringRegex;
class PDFDateString { class PDFDateString {
static #regex;
/** /**
* Convert a PDF date string to a JavaScript `Date` object. * Convert a PDF date string to a JavaScript `Date` object.
* *
@ -960,7 +960,7 @@ class PDFDateString {
} }
// Lazily initialize the regular expression. // Lazily initialize the regular expression.
pdfDateStringRegex ||= new RegExp( this.#regex ||= new RegExp(
"^D:" + // Prefix (required) "^D:" + // Prefix (required)
"(\\d{4})" + // Year (required) "(\\d{4})" + // Year (required)
"(\\d{2})?" + // Month (optional) "(\\d{2})?" + // Month (optional)
@ -978,7 +978,7 @@ class PDFDateString {
// Optional fields that don't satisfy the requirements from the regular // Optional fields that don't satisfy the requirements from the regular
// expression (such as incorrect digit counts or numbers that are out of // expression (such as incorrect digit counts or numbers that are out of
// range) will fall back the defaults from the specification. // range) will fall back the defaults from the specification.
const matches = pdfDateStringRegex.exec(input); const matches = this.#regex.exec(input);
if (!matches) { if (!matches) {
return null; return null;
} }