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-rw-r--r--ext/bg/js/template-renderer.js416
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diff --git a/ext/bg/js/template-renderer.js b/ext/bg/js/template-renderer.js
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--- a/ext/bg/js/template-renderer.js
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-/*
- * Copyright (C) 2016-2021 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
- * Handlebars
- */
-
-class TemplateRenderer {
- constructor(japaneseUtil) {
- this._japaneseUtil = japaneseUtil;
- this._cache = new Map();
- this._cacheMaxSize = 5;
- this._helpersRegistered = false;
- this._stateStack = null;
- this._dataTypes = new Map();
- }
-
- registerDataType(name, {modifier=null, modifierPost=null}) {
- this._dataTypes.set(name, {modifier, modifierPost});
- }
-
- async render(template, data, type) {
- if (!this._helpersRegistered) {
- this._registerHelpers();
- this._helpersRegistered = true;
- }
-
- const cache = this._cache;
- let instance = cache.get(template);
- if (typeof instance === 'undefined') {
- this._updateCacheSize(this._cacheMaxSize - 1);
- instance = Handlebars.compile(template);
- cache.set(template, instance);
- }
-
- let modifier = null;
- let modifierPost = null;
- if (typeof type === 'string') {
- const typeInfo = this._dataTypes.get(type);
- if (typeof typeInfo !== 'undefined') {
- ({modifier, modifierPost} = typeInfo);
- }
- }
-
- try {
- if (typeof modifier === 'function') {
- data = modifier(data);
- }
-
- this._stateStack = [new Map()];
- return instance(data).trim();
- } finally {
- this._stateStack = null;
-
- if (typeof modifierPost === 'function') {
- modifierPost(data);
- }
- }
- }
-
- // Private
-
- _updateCacheSize(maxSize) {
- const cache = this._cache;
- let removeCount = cache.size - maxSize;
- if (removeCount <= 0) { return; }
-
- for (const key of cache.keys()) {
- cache.delete(key);
- if (--removeCount <= 0) { break; }
- }
- }
-
- _registerHelpers() {
- Handlebars.partials = Handlebars.templates;
-
- const helpers = [
- ['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)]
- ];
-
- for (const [name, helper] of helpers) {
- this._registerHelper(name, helper);
- }
- }
-
- _registerHelper(name, helper) {
- function wrapper(...args) {
- return helper(this, ...args);
- }
- Handlebars.registerHelper(name, wrapper);
- }
-
- _escape(text) {
- return Handlebars.Utils.escapeExpression(text);
- }
-
- _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 seg of segs) {
- if (seg.furigana.length > 0) {
- result += `<ruby>${seg.text}<rt>${seg.furigana}</rt></ruby>`;
- } else {
- result += seg.text;
- }
- }
-
- return result;
- }
-
- _furiganaPlain(context, ...args) {
- const {expression, reading} = this._getFuriganaExpressionAndReading(context, ...args);
- const segs = this._japaneseUtil.distributeFurigana(expression, reading);
-
- let result = '';
- for (const seg of segs) {
- if (seg.furigana.length > 0) {
- if (result.length > 0) { result += ' '; }
- result += `${seg.text}[${seg.furigana}]`;
- } else {
- result += seg.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">${c}</a>`;
- } else {
- result += c;
- }
- }
-
- return result;
- }
-
- _multiLine(context, options) {
- return options.fn(context).split('\n').join('<br>');
- }
-
- _sanitizeCssClass(context, options) {
- return options.fn(context).replace(/[^_a-z0-9\u00a0-\uffff]/ig, '_');
- }
-
- _regexReplace(context, ...args) {
- // Usage:
- // {{#regexReplace regex string [flags]}}content{{/regexReplace}}
- // regex: regular expression string
- // string: string to replace
- // flags: optional flags for regular expression
- // e.g. "i" for case-insensitive, "g" for replace all
- let value = args[args.length - 1].fn(context);
- if (args.length >= 3) {
- try {
- const flags = args.length > 3 ? args[2] : 'g';
- const regex = new RegExp(args[0], flags);
- value = value.replace(regex, args[1]);
- } catch (e) {
- return `${e}`;
- }
- }
- return value;
- }
-
- _regexMatch(context, ...args) {
- // Usage:
- // {{#regexMatch regex [flags]}}content{{/regexMatch}}
- // regex: regular expression string
- // flags: optional flags for regular expression
- // e.g. "i" for case-insensitive, "g" for match all
- let value = args[args.length - 1].fn(context);
- if (args.length >= 2) {
- try {
- const flags = args.length > 2 ? 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) {
- 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) {
- for (let i = this._stateStack.length; --i >= 0;) {
- const map = this._stateStack[i];
- if (map.has(key)) {
- return map.get(key);
- }
- }
- return void 0;
- }
-
- _set(context, ...args) {
- switch (args.length) {
- case 2:
- {
- const [key, options] = args;
- const value = options.fn(context);
- this._stateStack[this._stateStack.length - 1].set(key, value);
- }
- break;
- case 3:
- {
- const [key, value] = args;
- this._stateStack[this._stateStack.length - 1].set(key, value);
- }
- break;
- }
- return '';
- }
-
- _scope(context, options) {
- try {
- this._stateStack.push(new Map());
- return options.fn(context);
- } finally {
- if (this._stateStack.length > 1) {
- this._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;
- }
-}