Which MIME types are related to file extension ".lsp"?
The .lsp file extension is associated with 4 MIME types:
text/x-common-lisp, application/octet-stream, application/x-newlisp, text/x-newlisp.
A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.
About .lsp Files
LSP files are source code files used in various Lisp programming environments.
They store code written in different dialects like Common Lisp and newLISP.
Some LSP files also serve as protected AutoCAD scripts.
- Common Lisp Source: Marked as text/x-common-lisp, these files contain plain text code typically edited with text editors or specialized IDEs such as LispWorks or Emacs.
- newLISP Source: Identified by text/x-newlisp or application/x-newlisp, these files are executed with the newLISP interpreter.
- AutoCAD Scripts: Labeled with application/octet-stream, they protect AutoCAD LISP code used for automating design tasks.
Relationship between file extension and MIME type
A file extension is a suffix at the end of a filename that indicates what type of file it is. File extensions help both users and operating systems identify what application should be used to open the file.
File extensions are typically separated from the filename by a period (dot) and consist of 2-4 characters, though they can be longer. For example, in the filename "document.pdf", ".pdf" is the file extension.
File extensions are closely related to MIME types, as they both serve to identify the format of a file. However, while MIME types are used primarily by web browsers and servers, file extensions are used by operating systems and applications.
Associated MIME types
text/x-common-lisp, application/octet-stream, application/x-newlisp, text/x-newlisp
FAQs
How do I open and edit an LSP file?
You can open most LSP files using a standard text editor like Notepad++, Visual Studio Code, or Emacs. Since these files usually contain plain text source code for Common Lisp or newLISP, they are human-readable. However, if the file is a protected AutoCAD script, it may appear as garbled binary data and cannot be edited in a text editor.
How do I load an LSP file into AutoCAD?
To run an AutoLISP script, open AutoCAD and type the APPLOAD command in the command line. Navigate to your .lsp file in the dialog box and click "Load." Alternatively, you can often drag and drop the file directly from your file explorer into the active AutoCAD drawing window to execute it immediately.
What is the difference between Common Lisp and AutoLISP files?
While both share the .lsp extension and similar syntax, Common Lisp is a general-purpose programming language, whereas AutoLISP is specifically designed for automating tasks within Autodesk products. Common Lisp files are typically run via an interpreter like SBCL or IDEs like LispWorks, while AutoLISP files require the AutoCAD environment to execute.
Why does my LSP file look like random symbols?
If your file opens with unreadable characters, it is likely a protected or compiled AutoLISP file. These files are saved in a binary format (often associated with application/octet-stream) to prevent editing or to protect intellectual property. You cannot revert these back to plain text source code easily without the original source.
What MIME type should be used for serving LSP files?
For web servers serving Lisp source code, the standard MIME type is text/x-common-lisp or simply text/plain. If you are working specifically with newLISP, you should use text/x-newlisp or application/x-newlisp. You can verify specific type definitions and browser compatibility on mime-type.com.
Can I convert an LSP file to an executable program?
Yes, depending on the dialect; Common Lisp implementations often support compiling source code into standalone binaries. For AutoCAD users, .lsp files can be compiled into .fas (Fast-Load AutoLISP) or .vlx (Visual LISP Executable) formats using the built-in Visual LISP editor to improve performance and security.
General FAQ
What is a MIME type?
A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.
MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.
MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.
How do I find the MIME type for a file?
You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.
Why can one extension have multiple MIME types?
Different programs and historical usage may assign various MIME identifiers to the same file format. Listing them together helps maintain compatibility across tools.