103 lines
3.6 KiB
JavaScript
103 lines
3.6 KiB
JavaScript
/*
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* Copyright (C) 2021-2022 Yomichan Authors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/**
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* This class has some general utility functions for working with Anki data.
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*/
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class AnkiUtil {
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/**
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* Gets the root deck name of a full deck name. If the deck is a root deck,
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* the same name is returned. Nested decks are separated using '::'.
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* @param deckName A string of the deck name.
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* @returns A string corresponding to the name of the root deck.
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*/
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static getRootDeckName(deckName) {
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const index = deckName.indexOf('::');
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return index >= 0 ? deckName.substring(0, index) : deckName;
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}
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/**
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* Checks whether or not any marker is contained in a string.
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* @param string A string to check.
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* @return `true` if the text contains an Anki field marker, `false` otherwise.
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*/
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static stringContainsAnyFieldMarker(string) {
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const result = this._markerPattern.test(string);
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this._markerPattern.lastIndex = 0;
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return result;
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}
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/**
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* Gets a list of all markers that are contained in a string.
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* @param string A string to check.
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* @return An array of marker strings.
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*/
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static getFieldMarkers(string) {
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const pattern = this._markerPattern;
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const markers = [];
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while (true) {
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const match = pattern.exec(string);
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if (match === null) { break; }
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markers.push(match[1]);
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}
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return markers;
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}
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/**
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* Checks whether an object of key-value pairs has a value which contains a specific marker.
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* @param fieldsObject An object with key-value pairs, where the value corresponds to the field value.
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* @param marker The marker string to check for, excluding brackets.
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* @returns `true` if any of the fields contains the marker, `false` otherwise.
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*/
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static fieldsObjectContainsMarker(fieldsObject, marker) {
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marker = `{${marker}}`;
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for (const [, fieldValue] of fieldsObject) {
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if (fieldValue.includes(marker)) {
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return true;
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}
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}
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return false;
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}
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/**
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* Returns a regular expression which can be used to find markers in a string.
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* @param global Whether or not the regular expression should have the global flag.
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* @returns A new `RegExp` instance.
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*/
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static cloneFieldMarkerPattern(global) {
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return new RegExp(this._markerPattern.source, global ? 'g' : '');
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}
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/**
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* Checks whether or not a note object is valid.
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* @param note A note object to check.
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* @return `true` if the note is valid, `false` otherwise.
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*/
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static isNoteDataValid(note) {
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if (!isObject(note)) { return false; }
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const {fields, deckName, modelName} = note;
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return (
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typeof deckName === 'string' &&
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typeof modelName === 'string' &&
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Object.entries(fields).length > 0
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);
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}
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}
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// eslint-disable-next-line no-underscore-dangle
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AnkiUtil._markerPattern = /\{([\w-]+)\}/g;
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