79 lines
3.9 KiB
JavaScript
79 lines
3.9 KiB
JavaScript
// Generates src/worker/lib/main/handlers.js from the desktop main/index.js: the statements inside
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// registerIpc() are copied as source text (no logic changes), except
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// - handle()/task() registrations of channels the web version doesn't have (dropped prefixes),
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// - every require("x") becomes an identifier imported once at the top of the module.
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// usage: node tools/gen-handlers.mjs
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import fs from "node:fs";
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import path from "node:path";
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import * as acorn from "acorn";
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const SRC = path.resolve("../reference/lstools-desktop/src/main/index.js");
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const OUT = path.resolve("src/worker/lib/main/handlers.js");
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// Answered by the browser (bridge.js) or not part of the web version.
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const DROP = ["dialog:", "shell:", "store:", "ws:", "app:", "pm:", "cz:", "lr:", "mon:", "iop:", "snd:"];
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// Handlers that need a module the web version does not ship are left out too.
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const MAIN_DIR = path.dirname(OUT);
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// Kept channels whose body opens an Electron dialog: answered in the browser (bridge.js) instead.
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const DIALOG_CHANNELS = ["fxlab:openJson", "fxlab:saveJson", "fx:openFile", "dat:pickFile"];
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// Non-registration statements that wire up removed parts (IOP Manager notifier, Monitor, Patch Manager).
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const DROP_STATEMENT = /\b(iop\.setNotifier|monitor\.|pm\.|patchman|launcherpub|clientzip)\b/;
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const text = fs.readFileSync(SRC, "utf8");
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const ast = acorn.parse(text, { ecmaVersion: "latest", sourceType: "script", locations: true });
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const reg = ast.body.find((n) => n.type === "FunctionDeclaration" && n.id.name === "registerIpc");
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if (!reg) throw new Error("registerIpc not found");
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const kept = [];
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const dropped = [];
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for (const st of reg.body.body) {
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const call = st.type === "ExpressionStatement" && st.expression.type === "CallExpression" ? st.expression : null;
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const isReg = call && call.callee.type === "Identifier" && ["handle", "task"].includes(call.callee.name) && call.arguments[0]?.type === "Literal";
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if (isReg) {
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const ch = call.arguments[0].value;
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if (DROP.some((p) => ch.startsWith(p)) || DIALOG_CHANNELS.includes(ch)) {
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dropped.push(ch);
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continue;
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}
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} else if (DROP_STATEMENT.test(text.slice(st.start, st.end))) {
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dropped.push(`(statement line ${st.loc.start.line})`);
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continue;
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}
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const needs = [...text.slice(st.start, st.end).matchAll(/require\("(\.\/[^"]+)"\)/g)].map((m) => (m[1].endsWith(".js") || m[1].endsWith(".json") ? m[1] : m[1] + ".js"));
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if (needs.some((s) => !fs.existsSync(path.join(MAIN_DIR, s)))) {
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dropped.push("(unshipped)");
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continue;
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}
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// keep comments right above the statement
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kept.push(text.slice(st.start, st.end));
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}
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// requires -> hoisted imports
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const imports = new Map(); // spec -> identifier
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const idFor = (spec) => {
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if (!imports.has(spec)) imports.set(spec, `__req_${spec.replace(/^node:/, "node_").replace(/[^\w]/g, "_")}`);
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return imports.get(spec);
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};
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let body = kept.join("\n\n").replace(/require\("([^"]+)"\)/g, (_, spec) => idFor(spec));
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// names index.js defines outside registerIpc that the handlers use
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const fixSpec = (s) => (s.startsWith(".") && !s.endsWith(".js") && !s.endsWith(".json") ? s + ".js" : s);
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const head = [...imports].map(([spec, id]) => `import ${id} from "${fixSpec(spec)}";`);
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head.push(`import path from "node:path";`, `import { app } from "electron";`, `import store from "./store.js";`, `import iop from "./iopman.js";`);
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const out = `// Generated by tools/gen-handlers.mjs from the desktop main/index.js registerIpc(). Do not edit.
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// Dropped channels: ${dropped.length}
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${head.join("\n")}
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const tasks = new Map();
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const win = null;
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export function register(handle, task) {
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${body.replace(/^/gm, "\t")}
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}
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`;
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fs.writeFileSync(OUT, out);
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const left = [...out.matchAll(/\brequire\(/g)].length;
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const regs = [...out.matchAll(/\b(handle|task)\("([\w:.-]+)"/g)].map((m) => m[2]);
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console.log(`kept ${regs.length} channels, dropped ${dropped.length}, imports ${imports.size}, require() left ${left}`);
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console.log("imports: " + [...imports.keys()].join(", "));
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