deploy: basic Path class

tools/deploy/path.ts

@@ -0,0 +1,33 @@
+
+import pathlib from 'path';
+
+type PathAttrs = {dir : string, name : string, ext : string | null};
+
+export class Path {
+    public readonly dir : string;
+    public readonly name : string;
+    public readonly ext : string | null;
+    
+    constructor({dir, name, ext} : PathAttrs) {
+        this.dir = dir;
+        this.name = name;
+        this.ext = ext;
+    }
+
+    static parse(x : string) {
+        const {dir, name, ext} = pathlib.parse(x);
+        return new Path({dir, name, ext: ext === "" ? null : ext.slice(1)});
+    }
+    
+    update({dir, name, ext} : Partial<PathAttrs>) {
+        return new Path({dir: dir ?? this.dir,
+                         name : name ?? this.name,
+                         ext : ext === undefined ? this.ext : ext});
+    }
+
+    format() {
+        return pathlib.format({dir : this.dir,
+                               name : this.name,
+                               ext : this.ext === null ? "" : `.${this.ext}`});
+    }
+}