yomichan/dev/build.js

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/*
* Copyright (C) 2020 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 path = require('path');
const readline = require('readline');
const childProcess = require('child_process');
const util = require('./util');
const {getAllFiles, getDefaultManifestAndVariants, createManifestString, getArgs} = util;
function clone(value) {
return JSON.parse(JSON.stringify(value));
}
async function createZip(directory, outputFileName, sevenZipExes=[], onUpdate=null) {
for (const exe of sevenZipExes) {
try {
childProcess.execFileSync(
exe,
[
'a',
outputFileName,
'.'
],
{
cwd: directory
}
);
return;
} catch (e) {
// NOP
}
}
return await createJSZip(directory, outputFileName, onUpdate);
}
async function createJSZip(directory, outputFileName, onUpdate) {
const JSZip = util.JSZip;
const files = getAllFiles(directory, directory);
const zip = new JSZip();
for (const fileName of files) {
zip.file(
fileName.replace(/\\/g, '/'),
fs.readFileSync(path.join(directory, fileName), {encoding: null, flag: 'r'}),
{}
);
}
if (typeof onUpdate !== 'function') {
onUpdate = () => {}; // NOP
}
const data = await zip.generateAsync({
type: 'nodebuffer',
compression: 'DEFLATE',
compressionOptions: {level: 9}
}, onUpdate);
process.stdout.write('\n');
fs.writeFileSync(outputFileName, data, {encoding: null, flag: 'w'});
}
function applyModifications(manifest, modifications) {
if (Array.isArray(modifications)) {
for (const modification of modifications) {
const {action, path: path2} = modification;
switch (action) {
case 'set':
{
const {value: newValue} = modification;
const value = getObjectProperties(manifest, path2, path2.length - 1);
const last = path2[path2.length - 1];
value[last] = clone(newValue);
}
break;
case 'replace':
{
const {pattern, patternFlags, replacement} = modification;
const value = getObjectProperties(manifest, path2, path2.length - 1);
const regex = new RegExp(pattern, patternFlags);
const last = path2[path2.length - 1];
let value2 = value[last];
value2 = `${value2}`.replace(regex, replacement);
value[last] = value2;
}
break;
case 'delete':
{
const value = getObjectProperties(manifest, path2, path2.length - 1);
const last = path2[path2.length - 1];
delete value[last];
}
break;
case 'remove':
{
const {item} = modification;
const value = getObjectProperties(manifest, path2, path2.length);
const index = value.indexOf(item);
if (index >= 0) { value.splice(index, 1); }
}
break;
case 'splice':
{
const {start, deleteCount, items} = modification;
const value = getObjectProperties(manifest, path2, path2.length);
const itemsNew = items.map((v) => clone(v));
value.splice(start, deleteCount, ...itemsNew);
}
break;
}
}
}
return manifest;
}
function getObjectProperties(object, path2, count) {
for (let i = 0; i < count; ++i) {
object = object[path2[i]];
}
return object;
}
function getInheritanceChain(variant, variantMap) {
const visited = new Set();
const inheritance = [];
while (true) {
const {name, inherit} = variant;
if (visited.has(name)) { break; }
visited.add(name);
inheritance.unshift(variant);
if (typeof inherit !== 'string') { break; }
const nextVariant = variantMap.get(inherit);
if (typeof nextVariant === 'undefined') { break; }
variant = nextVariant;
}
return inheritance;
}
function createVariantManifest(manifest, variant, variantMap) {
let modifiedManifest = clone(manifest);
for (const {modifications} of getInheritanceChain(variant, variantMap)) {
modifiedManifest = applyModifications(modifiedManifest, modifications);
}
return modifiedManifest;
}
async function build(manifest, buildDir, extDir, manifestPath, variantMap, variantNames) {
const sevenZipExes = ['7za', '7z'];
// Create build directory
if (!fs.existsSync(buildDir)) {
fs.mkdirSync(buildDir, {recursive: true});
}
const onUpdate = (metadata) => {
let message = `Progress: ${metadata.percent.toFixed(2)}%`;
if (metadata.currentFile) {
message += ` (${metadata.currentFile})`;
}
readline.clearLine(process.stdout);
readline.cursorTo(process.stdout, 0);
process.stdout.write(message);
};
for (const variantName of variantNames) {
const variant = variantMap.get(variantName);
if (typeof variant === 'undefined') { continue; }
const {name, fileName, fileCopies} = variant;
process.stdout.write(`Building ${name}...\n`);
const modifiedManifest = createVariantManifest(manifest, variant, variantMap);
const fileNameSafe = path.basename(fileName);
const fullFileName = path.join(buildDir, fileNameSafe);
fs.writeFileSync(manifestPath, createManifestString(modifiedManifest));
await createZip(extDir, fullFileName, sevenZipExes, onUpdate);
if (Array.isArray(fileCopies)) {
for (const fileName2 of fileCopies) {
const fileName2Safe = path.basename(fileName2);
fs.copyFileSync(fullFileName, path.join(buildDir, fileName2Safe));
}
}
process.stdout.write('\n');
}
}
async function main() {
const argv = process.argv.slice(2);
const args = getArgs(argv, new Map([
['all', false],
['default', false],
['manifest', null],
[null, []]
]));
const {manifest, variants} = getDefaultManifestAndVariants();
const rootDir = path.join(__dirname, '..');
const extDir = path.join(rootDir, 'ext');
const buildDir = path.join(rootDir, 'builds');
const manifestPath = path.join(extDir, 'manifest.json');
const variantMap = new Map();
for (const variant of variants) {
variantMap.set(variant.name, variant);
}
try {
const variantNames = (argv.length === 0 || args.get('all') ? variants.map(({name}) => name) : args.get(null));
await build(manifest, buildDir, extDir, manifestPath, variantMap, variantNames);
} finally {
// Restore manifest
let restoreManifest = manifest;
if (!args.get('default') && args.get('manifest') !== null) {
const variant = variantMap.get(args.get('manifest'));
if (typeof variant !== 'undefined') {
restoreManifest = createVariantManifest(manifest, variant, variantMap);
}
}
process.stdout.write('Restoring manifest...\n');
fs.writeFileSync(manifestPath, createManifestString(restoreManifest));
}
}
if (require.main === module) { main(); }