Function lookupPath

src/piper.js:1930–1967

(path, opts = {})

			filesystems: null,
			syncFSRequests: 0,
			lookupPath(path, opts = {}) {
				path = PATH_FS.resolve(path);
				if (!path) return { path: '', node: null };
				var defaults = { follow_mount: true, recurse_count: 0 };
				opts = Object.assign(defaults, opts);
				if (opts.recurse_count > 8) {
					throw new FS.ErrnoError(32);
				}
				var parts = path.split('/').filter((p) => !!p);
				var current = FS.root;
				var current_path = '/';
				for (var i = 0; i < parts.length; i++) {
					var islast = i === parts.length - 1;
					if (islast && opts.parent) {
						break;
					}
					current = FS.lookupNode(current, parts[i]);
					current_path = PATH.join2(current_path, parts[i]);
					if (FS.isMountpoint(current)) {
						if (!islast || (islast && opts.follow_mount)) {
							current = current.mounted.root;
						}
					}
					if (!islast || opts.follow) {
						var count = 0;
						while (FS.isLink(current.mode)) {
							var link = FS.readlink(current_path);
							current_path = PATH_FS.resolve(PATH.dirname(current_path), link);
							var lookup = FS.lookupPath(current_path, { recurse_count: opts.recurse_count + 1 });
							current = lookup.node;
							if (count++ > 40) {
								throw new FS.ErrnoError(32);
							}
						}
					}
				}
				return { path: current_path, node: current };
			},
			getPath(node) {
				var path;
				while (true) {