JS: Split node utils into their own file.

js/nodeutils.js

@@ -0,0 +1,88 @@
+var fs	  = require("fs");
+var path  = require("path");
+
+var utils  = require("./utils.js");
+
+// Empty a directory.
+var emptyPath = function(dirPath, done) {
+  fs.readdir(dirPath, function(err, files) {
+    if (err) {
+      done(err);
+    }
+    else {
+      utils.mapOr(rmPath, files.map(function(f) { return path.join(dirPath, f); }), done);
+    }
+  });
+};
+
+// Make a directory and sub-directories.
+var mkPath = function(dirPath, mode, done) {
+  fs.mkdir(dirPath, typeof mode === "string" ? parseInt(mode, 8) : mode, function(e) {
+      if (!e ||  e.code === "EEXIST") {
+	// Created or already exists, done.
+	done();
+      }
+      else if (e.code === "ENOENT") {
+	// Missing sub dir.
+
+	mkPath(path.dirname(dirPath), mode, function(e) {
+	    if (e) {
+	      throw e;
+	    }
+	    else {
+	      mkPath(dirPath, mode, done);
+	    }
+	  });
+      }
+      else {
+	throw e;
+      }
+  });
+};
+
+// Create directory if needed and empty if needed.
+var resetPath = function(dirPath, mode, done) {
+  mkPath(dirPath, mode, function(e) {
+      if (e) {
+	done(e);
+      }
+      else {
+	emptyPath(dirPath, done);
+      }
+    });
+};
+
+// Remove path recursively.
+var rmPath = function(dirPath, done) {
+//  console.log("rmPath: %s", dirPath);
+
+  fs.lstat(dirPath, function(err, stats) {
+      if (err && err.code == "ENOENT") {
+	done();
+      }
+      if (err) {
+	done(err);
+      }
+      else if (stats.isDirectory()) {
+	emptyPath(dirPath, function(e) {
+	    if (e) {
+	      done(e);
+	    }
+	    else {
+//	      console.log("rmdir: %s", dirPath); done();
+	      fs.rmdir(dirPath, done);
+	    }
+	  });
+      }
+      else {
+//	console.log("unlink: %s", dirPath); done();
+	fs.unlink(dirPath, done);
+      }
+    });
+};
+
+exports.mkPath	    = mkPath;
+exports.resetPath   = resetPath;
+exports.rmPath	    = rmPath;
+
+// vim:sw=2:sts=2:ts=8