ExtendScript.book

4 Using File and Folder Objects Overview Because path name syntax is very different in Windows®, Mac OS® and UNIX®, Adobe ExendScript defines theFileandFolderobjects to provide platform-independent access to the underlying file system. A File Objectrepresents a disk file, aFolder Objectrepresents a directory or folder. ●TheFolderobject supports file system functionality such as traversing the hierarchy; creating, renaming or removing files; or resolving file aliases. ●TheFileobject supports input/output functions to read or write files. There are several ways to distinguish between aFileand aFolderobject. For example: if (f instanceof File) ... if (typeof f.open == "undefined") ...// Folders do not open FileandFolderobjects can be used anywhere that a path name is required, such as in properties and arguments for files and folders. For details about the objects and their properties and methods, see Chapter 7, “File and Folder Object Reference." Note:When you create twoFileobjects that refer to the same disk file, they are treated as distinct objects. If you open one of them for I/O, the operating system may inhibit access from the other object, because the disk file already is open. Specifying Paths When creating aFileorFolderobject, you can specify a platform-specific path name, or an absolute or relative path in a platform-independent format known asuniversal resource identifier(URI) notation.