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Diffstat (limited to 'dev/css-to-json-util.js')
| -rw-r--r-- | dev/css-to-json-util.js | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/dev/css-to-json-util.js b/dev/css-to-json-util.js deleted file mode 100644 index 79aae3c9..00000000 --- a/dev/css-to-json-util.js +++ /dev/null @@ -1,172 +0,0 @@ -/* - * Copyright (C) 2023 Yomitan Authors - * 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/>. - */ - -const fs = require('fs'); -const css = require('css'); - -function indexOfRule(rules, selectors) { - const jj = selectors.length; - for (let i = 0, ii = rules.length; i < ii; ++i) { - const ruleSelectors = rules[i].selectors; - if (ruleSelectors.length !== jj) { continue; } - let okay = true; - for (let j = 0; j < jj; ++j) { - if (selectors[j] !== ruleSelectors[j]) { - okay = false; - break; - } - } - if (okay) { return i; } - } - return -1; -} - -function removeProperty(styles, property, removedProperties) { - let removeCount = removedProperties.get(property); - if (typeof removeCount !== 'undefined') { return removeCount; } - removeCount = 0; - for (let i = 0, ii = styles.length; i < ii; ++i) { - const key = styles[i][0]; - if (key !== property) { continue; } - styles.splice(i, 1); - --i; - --ii; - ++removeCount; - } - removedProperties.set(property, removeCount); - return removeCount; -} - -function formatRulesJson(rules) { - // Manually format JSON, for improved compactness - // return JSON.stringify(rules, null, 4); - const indent1 = ' '; - const indent2 = indent1.repeat(2); - const indent3 = indent1.repeat(3); - let result = ''; - result += '['; - let index1 = 0; - for (const {selectors, styles} of rules) { - if (index1 > 0) { result += ','; } - result += `\n${indent1}{\n${indent2}"selectors": `; - if (selectors.length === 1) { - result += `[${JSON.stringify(selectors[0], null, 4)}]`; - } else { - result += JSON.stringify(selectors, null, 4).replace(/\n/g, '\n' + indent2); - } - result += `,\n${indent2}"styles": [`; - let index2 = 0; - for (const [key, value] of styles) { - if (index2 > 0) { result += ','; } - result += `\n${indent3}[${JSON.stringify(key)}, ${JSON.stringify(value)}]`; - ++index2; - } - if (index2 > 0) { result += `\n${indent2}`; } - result += `]\n${indent1}}`; - ++index1; - } - if (index1 > 0) { result += '\n'; } - result += ']'; - return result; -} - -function generateRules(cssFile, overridesCssFile) { - const content1 = fs.readFileSync(cssFile, {encoding: 'utf8'}); - const content2 = fs.readFileSync(overridesCssFile, {encoding: 'utf8'}); - const stylesheet1 = css.parse(content1, {}).stylesheet; - const stylesheet2 = css.parse(content2, {}).stylesheet; - - const removePropertyPattern = /^remove-property\s+([\w\W]+)$/; - const removeRulePattern = /^remove-rule$/; - const propertySeparator = /\s+/; - - const rules = []; - - // Default stylesheet - for (const rule of stylesheet1.rules) { - if (rule.type !== 'rule') { continue; } - const {selectors, declarations} = rule; - const styles = []; - for (const declaration of declarations) { - if (declaration.type !== 'declaration') { console.log(declaration); continue; } - const {property, value} = declaration; - styles.push([property, value]); - } - if (styles.length > 0) { - rules.push({selectors, styles}); - } - } - - // Overrides - for (const rule of stylesheet2.rules) { - if (rule.type !== 'rule') { continue; } - const {selectors, declarations} = rule; - const removedProperties = new Map(); - for (const declaration of declarations) { - switch (declaration.type) { - case 'declaration': - { - const index = indexOfRule(rules, selectors); - let entry; - if (index >= 0) { - entry = rules[index]; - } else { - entry = {selectors, styles: []}; - rules.push(entry); - } - const {property, value} = declaration; - removeProperty(entry.styles, property, removedProperties); - entry.styles.push([property, value]); - } - break; - case 'comment': - { - const index = indexOfRule(rules, selectors); - if (index < 0) { throw new Error('Could not find rule with matching selectors'); } - const comment = declaration.comment.trim(); - let m; - if ((m = removePropertyPattern.exec(comment)) !== null) { - for (const property of m[1].split(propertySeparator)) { - const removeCount = removeProperty(rules[index].styles, property, removedProperties); - if (removeCount === 0) { throw new Error(`Property removal is unnecessary; ${property} does not exist`); } - } - } else if (removeRulePattern.test(comment)) { - rules.splice(index, 1); - } - } - break; - } - } - } - - // Remove empty - for (let i = 0, ii = rules.length; i < ii; ++i) { - if (rules[i].styles.length > 0) { continue; } - rules.splice(i, 1); - --i; - --ii; - } - - return rules; -} - - -module.exports = { - formatRulesJson, - generateRules -}; |