/* * Copyright (C) 2021-2022 Yomichan Authors * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <https://www.gnu.org/licenses/>. */ /* global * AnkiNoteDataCreator * AnkiTemplateRendererContentManager * CssStyleApplier * DictionaryDataUtil * Handlebars * JapaneseUtil * PronunciationGenerator * StructuredContentGenerator * TemplateRenderer * TemplateRendererMediaProvider */ /** * This class contains all Anki-specific template rendering functionality. It is built on * the generic TemplateRenderer class and various other Anki-related classes. */ class AnkiTemplateRenderer { /** * Creates a new instance of the class. */ constructor() { this._structuredContentStyleApplier = new CssStyleApplier('/data/structured-content-style.json'); this._pronunciationStyleApplier = new CssStyleApplier('/data/pronunciation-style.json'); this._structuredContentDatasetKeyIgnorePattern = /^sc([^a-z]|$)/; this._japaneseUtil = new JapaneseUtil(null); this._templateRenderer = new TemplateRenderer(); this._ankiNoteDataCreator = new AnkiNoteDataCreator(this._japaneseUtil); this._mediaProvider = new TemplateRendererMediaProvider(); this._pronunciationGenerator = new PronunciationGenerator(this._japaneseUtil); this._stateStack = null; this._requirements = null; this._cleanupCallbacks = null; this._temporaryElement = null; } /** * Gets the generic TemplateRenderer instance. * @type {TemplateRenderer} */ get templateRenderer() { return this._templateRenderer; } /** * Prepares the data that is necessary before the template renderer can be safely used. */ async prepare() { this._templateRenderer.registerHelpers([ ['dumpObject', this._dumpObject.bind(this)], ['furigana', this._furigana.bind(this)], ['furiganaPlain', this._furiganaPlain.bind(this)], ['kanjiLinks', this._kanjiLinks.bind(this)], ['multiLine', this._multiLine.bind(this)], ['sanitizeCssClass', this._sanitizeCssClass.bind(this)], ['regexReplace', this._regexReplace.bind(this)], ['regexMatch', this._regexMatch.bind(this)], ['mergeTags', this._mergeTags.bind(this)], ['eachUpTo', this._eachUpTo.bind(this)], ['spread', this._spread.bind(this)], ['op', this._op.bind(this)], ['get', this._get.bind(this)], ['set', this._set.bind(this)], ['scope', this._scope.bind(this)], ['property', this._property.bind(this)], ['noop', this._noop.bind(this)], ['isMoraPitchHigh', this._isMoraPitchHigh.bind(this)], ['getKanaMorae', this._getKanaMorae.bind(this)], ['typeof', this._getTypeof.bind(this)], ['join', this._join.bind(this)], ['concat', this._concat.bind(this)], ['pitchCategories', this._pitchCategories.bind(this)], ['formatGlossary', this._formatGlossary.bind(this)], ['hasMedia', this._hasMedia.bind(this)], ['getMedia', this._getMedia.bind(this)], ['pronunciation', this._pronunciation.bind(this)], ['hiragana', this._hiragana.bind(this)], ['katakana', this._katakana.bind(this)] ]); this._templateRenderer.registerDataType('ankiNote', { modifier: ({marker, commonData}) => this._ankiNoteDataCreator.create(marker, commonData), composeData: (marker, commonData) => ({marker, commonData}) }); this._templateRenderer.setRenderCallbacks( this._onRenderSetup.bind(this), this._onRenderCleanup.bind(this) ); await Promise.all([ this._structuredContentStyleApplier.prepare(), this._pronunciationStyleApplier.prepare() ]); } // Private _onRenderSetup() { const requirements = []; this._stateStack = [new Map()]; this._requirements = requirements; this._mediaProvider.requirements = requirements; this._cleanupCallbacks = []; return {requirements}; } _onRenderCleanup() { for (const callback of this._cleanupCallbacks) { callback(); } this._stateStack = null; this._requirements = null; this._mediaProvider.requirements = null; this._cleanupCallbacks = null; } _escape(text) { return Handlebars.Utils.escapeExpression(text); } // Template helpers _dumpObject(context, options) { const dump = JSON.stringify(options.fn(context), null, 4); return this._escape(dump); } _furigana(context, ...args) { const {expression, reading} = this._getFuriganaExpressionAndReading(context, ...args); const segs = this._japaneseUtil.distributeFurigana(expression, reading); let result = ''; for (const {text, reading: reading2} of segs) { if (reading2.length > 0) { result += `<ruby>${text}<rt>${reading2}</rt></ruby>`; } else { result += text; } } return result; } _furiganaPlain(context, ...args) { const {expression, reading} = this._getFuriganaExpressionAndReading(context, ...args); const segs = this._japaneseUtil.distributeFurigana(expression, reading); let result = ''; for (const {text, reading: reading2} of segs) { if (reading2.length > 0) { if (result.length > 0) { result += ' '; } result += `${text}[${reading2}]`; } else { result += text; } } return result; } _getFuriganaExpressionAndReading(context, ...args) { const options = args[args.length - 1]; if (args.length >= 3) { return {expression: args[0], reading: args[1]}; } else { const {expression, reading} = options.fn(context); return {expression, reading}; } } _kanjiLinks(context, options) { const jp = this._japaneseUtil; let result = ''; for (const c of options.fn(context)) { if (jp.isCodePointKanji(c.codePointAt(0))) { result += `<a href="#" class="kanji-link">${c}</a>`; } else { result += c; } } return result; } _stringToMultiLineHtml(string) { return string.split('\n').join('<br>'); } _multiLine(context, options) { return this._stringToMultiLineHtml(options.fn(context)); } _sanitizeCssClass(context, options) { return options.fn(context).replace(/[^_a-z0-9\u00a0-\uffff]/ig, '_'); } _regexReplace(context, ...args) { // Usage: // {{#regexReplace regex string [flags] [content]...}}content{{/regexReplace}} // regex: regular expression string // string: string to replace // flags: optional flags for regular expression // e.g. "i" for case-insensitive, "g" for replace all const argCount = args.length - 1; const options = args[argCount]; let value = typeof options.fn === 'function' ? options.fn(context) : ''; if (argCount > 3) { value = `${args.slice(3).join('')}${value}`; } if (argCount > 1) { try { const flags = argCount > 2 ? args[2] : 'g'; const regex = new RegExp(args[0], flags); value = value.replace(regex, args[1]); } catch (e) { return `${e}`; } } return value; } _regexMatch(context, ...args) { // Usage: // {{#regexMatch regex [flags] [content]...}}content{{/regexMatch}} // regex: regular expression string // flags: optional flags for regular expression // e.g. "i" for case-insensitive, "g" for match all const argCount = args.length - 1; const options = args[argCount]; let value = typeof options.fn === 'function' ? options.fn(context) : ''; if (argCount > 2) { value = `${args.slice(2).join('')}${value}`; } if (argCount > 0) { try { const flags = argCount > 1 ? args[1] : ''; const regex = new RegExp(args[0], flags); const parts = []; value.replace(regex, (g0) => parts.push(g0)); value = parts.join(''); } catch (e) { return `${e}`; } } return value; } _mergeTags(context, object, isGroupMode, isMergeMode) { const tagSources = []; if (isGroupMode || isMergeMode) { for (const definition of object.definitions) { tagSources.push(definition.definitionTags); } } else { tagSources.push(object.definitionTags); } const tags = new Set(); for (const tagSource of tagSources) { if (!Array.isArray(tagSource)) { continue; } for (const tag of tagSource) { tags.add(tag.name); } } return [...tags].join(', '); } _eachUpTo(context, iterable, maxCount, options) { if (iterable) { const results = []; let any = false; for (const entry of iterable) { any = true; if (results.length >= maxCount) { break; } const processedEntry = options.fn(entry); results.push(processedEntry); } if (any) { return results.join(''); } } return options.inverse(context); } _spread(context, ...args) { const result = []; for (let i = 0, ii = args.length - 1; i < ii; ++i) { try { result.push(...args[i]); } catch (e) { // NOP } } return result; } _op(context, ...args) { switch (args.length) { case 3: return this._evaluateUnaryExpression(args[0], args[1]); case 4: return this._evaluateBinaryExpression(args[0], args[1], args[2]); case 5: return this._evaluateTernaryExpression(args[0], args[1], args[2], args[3]); default: return void 0; } } _evaluateUnaryExpression(operator, operand1) { switch (operator) { case '+': return +operand1; case '-': return -operand1; case '~': return ~operand1; case '!': return !operand1; default: return void 0; } } _evaluateBinaryExpression(operator, operand1, operand2) { switch (operator) { case '+': return operand1 + operand2; case '-': return operand1 - operand2; case '/': return operand1 / operand2; case '*': return operand1 * operand2; case '%': return operand1 % operand2; case '**': return operand1 ** operand2; case '==': return operand1 == operand2; // eslint-disable-line eqeqeq case '!=': return operand1 != operand2; // eslint-disable-line eqeqeq case '===': return operand1 === operand2; case '!==': return operand1 !== operand2; case '<': return operand1 < operand2; case '<=': return operand1 <= operand2; case '>': return operand1 > operand2; case '>=': return operand1 >= operand2; case '<<': return operand1 << operand2; case '>>': return operand1 >> operand2; case '>>>': return operand1 >>> operand2; case '&': return operand1 & operand2; case '|': return operand1 | operand2; case '^': return operand1 ^ operand2; case '&&': return operand1 && operand2; case '||': return operand1 || operand2; default: return void 0; } } _evaluateTernaryExpression(operator, operand1, operand2, operand3) { switch (operator) { case '?:': return operand1 ? operand2 : operand3; default: return void 0; } } _get(context, key) { const stateStack = this._stateStack; for (let i = stateStack.length; --i >= 0;) { const map = stateStack[i]; if (map.has(key)) { return map.get(key); } } return void 0; } _set(context, ...args) { const stateStack = this._stateStack; switch (args.length) { case 2: { const [key, options] = args; const value = options.fn(context); stateStack[stateStack.length - 1].set(key, value); } break; case 3: { const [key, value] = args; stateStack[stateStack.length - 1].set(key, value); } break; } return ''; } _scope(context, options) { const stateStack = this._stateStack; try { stateStack.push(new Map()); return options.fn(context); } finally { if (stateStack.length > 1) { stateStack.pop(); } } } _property(context, ...args) { const ii = args.length - 1; if (ii <= 0) { return void 0; } try { let value = args[0]; for (let i = 1; i < ii; ++i) { value = value[args[i]]; } return value; } catch (e) { return void 0; } } _noop(context, options) { return options.fn(context); } _isMoraPitchHigh(context, index, position) { return this._japaneseUtil.isMoraPitchHigh(index, position); } _getKanaMorae(context, text) { return this._japaneseUtil.getKanaMorae(`${text}`); } _getTypeof(context, ...args) { const ii = args.length - 1; const value = (ii > 0 ? args[0] : args[ii].fn(context)); return typeof value; } _join(context, ...args) { return args.length > 1 ? args.slice(1, args.length - 1).flat().join(args[0]) : ''; } _concat(context, ...args) { let result = ''; for (let i = 0, ii = args.length - 1; i < ii; ++i) { result += args[i]; } return result; } _pitchCategories(context, data) { const {pronunciations, headwords} = data.dictionaryEntry; const categories = new Set(); for (const {headwordIndex, pitches} of pronunciations) { const {reading, wordClasses} = headwords[headwordIndex]; const isVerbOrAdjective = DictionaryDataUtil.isNonNounVerbOrAdjective(wordClasses); for (const {position} of pitches) { const category = this._japaneseUtil.getPitchCategory(reading, position, isVerbOrAdjective); if (category !== null) { categories.add(category); } } } return [...categories]; } _getTemporaryElement() { let element = this._temporaryElement; if (element === null) { element = document.createElement('div'); this._temporaryElement = element; } return element; } _getStructuredContentHtml(node) { return this._getHtml(node, this._structuredContentStyleApplier, this._structuredContentDatasetKeyIgnorePattern); } _getPronunciationHtml(node) { return this._getHtml(node, this._pronunciationStyleApplier, null); } _getHtml(node, styleApplier, datasetKeyIgnorePattern) { const container = this._getTemporaryElement(); container.appendChild(node); this._normalizeHtml(container, styleApplier, datasetKeyIgnorePattern); const result = container.innerHTML; container.textContent = ''; return result; } _normalizeHtml(root, styleApplier, datasetKeyIgnorePattern) { const {ELEMENT_NODE, TEXT_NODE} = Node; const treeWalker = document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_TEXT); const elements = []; const textNodes = []; while (true) { const node = treeWalker.nextNode(); if (node === null) { break; } switch (node.nodeType) { case ELEMENT_NODE: elements.push(node); break; case TEXT_NODE: textNodes.push(node); break; } } styleApplier.applyClassStyles(elements); for (const element of elements) { const {dataset} = element; for (const key of Object.keys(dataset)) { if (datasetKeyIgnorePattern !== null && datasetKeyIgnorePattern.test(key)) { continue; } delete dataset[key]; } } for (const textNode of textNodes) { this._replaceNewlines(textNode); } } _replaceNewlines(textNode) { const parts = textNode.nodeValue.split('\n'); if (parts.length <= 1) { return; } const {parentNode} = textNode; if (parentNode === null) { return; } const fragment = document.createDocumentFragment(); for (let i = 0, ii = parts.length; i < ii; ++i) { if (i > 0) { fragment.appendChild(document.createElement('br')); } fragment.appendChild(document.createTextNode(parts[i])); } parentNode.replaceChild(fragment, textNode); } _createStructuredContentGenerator(data) { const contentManager = new AnkiTemplateRendererContentManager(this._mediaProvider, data); const instance = new StructuredContentGenerator(contentManager, this._japaneseUtil, document); this._cleanupCallbacks.push(() => contentManager.unloadAll()); return instance; } _formatGlossary(context, dictionary, options) { const data = options.data.root; const content = options.fn(context); if (typeof content === 'string') { return this._stringToMultiLineHtml(this._escape(content)); } if (!(typeof content === 'object' && content !== null)) { return ''; } switch (content.type) { case 'image': return this._formatGlossaryImage(content, dictionary, data); case 'structured-content': return this._formatStructuredContent(content, dictionary, data); } return ''; } _formatGlossaryImage(content, dictionary, data) { const structuredContentGenerator = this._createStructuredContentGenerator(data); const node = structuredContentGenerator.createDefinitionImage(content, dictionary); return this._getStructuredContentHtml(node); } _formatStructuredContent(content, dictionary, data) { const structuredContentGenerator = this._createStructuredContentGenerator(data); const node = structuredContentGenerator.createStructuredContent(content.content, dictionary); return node !== null ? this._getStructuredContentHtml(node) : ''; } _hasMedia(context, ...args) { const ii = args.length - 1; const options = args[ii]; return this._mediaProvider.hasMedia(options.data.root, args.slice(0, ii), options.hash); } _getMedia(context, ...args) { const ii = args.length - 1; const options = args[ii]; return this._mediaProvider.getMedia(options.data.root, args.slice(0, ii), options.hash); } _pronunciation(context, ...args) { const ii = args.length - 1; const options = args[ii]; let {format, reading, downstepPosition, nasalPositions, devoicePositions} = options.hash; if (typeof reading !== 'string' || reading.length === 0) { return ''; } if (typeof downstepPosition !== 'number') { return ''; } if (!Array.isArray(nasalPositions)) { nasalPositions = []; } if (!Array.isArray(devoicePositions)) { devoicePositions = []; } const morae = this._japaneseUtil.getKanaMorae(reading); switch (format) { case 'text': return this._getPronunciationHtml(this._pronunciationGenerator.createPronunciationText(morae, downstepPosition, nasalPositions, devoicePositions)); case 'graph': return this._getPronunciationHtml(this._pronunciationGenerator.createPronunciationGraph(morae, downstepPosition)); case 'position': return this._getPronunciationHtml(this._pronunciationGenerator.createPronunciationDownstepPosition(downstepPosition)); default: return ''; } } _hiragana(context, ...args) { const ii = args.length - 1; const options = args[ii]; const {keepProlongedSoundMarks} = options.hash; const value = (ii > 0 ? args[0] : options.fn(context)); return this._japaneseUtil.convertKatakanaToHiragana(value, keepProlongedSoundMarks === true); } _katakana(context, ...args) { const ii = args.length - 1; const options = args[ii]; const value = (ii > 0 ? args[0] : options.fn(context)); return this._japaneseUtil.convertHiraganaToKatakana(value); } }