![]() This directory contains everything, including the resources, executable code, private frameworks, private plug-ins, and support files needed by the application. At the top-level of the bundle is a directory named Contents. The basic structure of a Mac app bundle is very simple. The presence of this key tells the Finder and Launch Services to treat directories with the given file extension as a package. The Structure of a macOS Application Bundle. For each document package type, include the LSTypeIsPackage key with an appropriate value. "The CFBundleDocumentTypes key stores information about the document types your application supports. Some bundle files have an internal structure with subdirectories within them, while others have a flat structure with all their files in the "root" directory within them.Īn application registers a key with the Finder so it can treat the package as a file. The purpose is to group related files together and treat them as a unit when the user is installing, copying, and moving them, while they remain individually accessible by the programs needing to use them. bundle extension, and some are used in the System and Library directories of OS X. Various special-purpose "bundles" of this sort exist with a number of different file extensions, such as. In NeXTSTEP, OPENSTEP, GNUstep, and their lineal descendants macOS and iOS, a bundle is a file directory with a defined structure and file extension. Unlike Spotlight, EasyFind finds files and folders by name or content using advanced Boolean operators similar to DEVONthink and DEVONagent, wildcards. This concept of treating a directory as a file is used commonly in OS X (and iOS) file formats, in preference over the earlier system of using resource forks to attach related items to a file. An OS X bundle file is actually a directory (folder), but the Mac Finder treats it like a single file. ![]()
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