deploy: add script.ts (replacement for lang.js)

tools/deploy/script.ts

@@ -0,0 +1,70 @@
+
+import fs from 'fs';
+import nodePath from 'path';
+import vm from 'vm';
+import * as pathlib from './path.js';
+
+export class ActionQueue {
+    private queue: {src : pathlib.Path, dst : pathlib.Path}[];
+    
+    constructor() {
+        this.queue = [];
+    }
+
+    copy(src : pathlib.Path, dst : pathlib.Path) {
+        // TODO: detect conflicts
+        this.queue.push({src, dst});
+    }
+
+    describe() : {src : pathlib.Path, dst : pathlib.Path}[] {
+        return this.queue;
+    }
+
+    run(mode : 'link' | 'copy') {
+        for (const {src, dst} of this.queue) {
+            fs.mkdirSync(src.dir, {recursive: true});
+            if (mode === 'link') {
+                fs.linkSync(pathlib.format(src), pathlib.format(dst));
+            } else {
+                fs.copyFileSync(pathlib.format(src), pathlib.format(dst));
+            }
+        }
+    }
+}
+
+class Env {
+    constructor(private srcDir : string,
+                private dstDir : string,
+                private queue : ActionQueue) {}
+    
+    list(dir : string) : pathlib.Path[] {
+        const result = [];
+        for (const filename of fs.readdirSync(nodePath.join(this.srcDir, dir))) {
+            result.push(pathlib.path(filename, {dir}));
+        }
+        return result;
+    }
+
+    copy(src : pathlib.PathLike, dst : pathlib.PathLike) {
+        const srcp = pathlib.path(src);
+        const dstp = pathlib.path(dst);
+        this.queue.copy(pathlib.join(this.srcDir, srcp), pathlib.join(this.dstDir, dstp));
+    }
+}
+
+export class Script {
+    private script : vm.Script;
+    
+    constructor(code : string) {
+        this.script = new vm.Script(code);
+    }
+
+    runOnFile(p : pathlib.Path) : any {
+        return this.script.runInNewContext({path: p, ...p});
+    }
+
+    run(srcDir : string, dstDir : string, queue : ActionQueue) {
+        this.script.runInNewContext(new Env(srcDir, dstDir, queue));
+    }
+}
+