https://github.com/valeriyvan/swift-netpbm

libnetpbm library as Swift package. libnetpbm is a C programming library for reading, writing, and manipulating Netpbm images.
https://github.com/valeriyvan/swift-netpbm

image-manipulation image-processing

Last synced: 4 days ago
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libnetpbm library as Swift package. libnetpbm is a C programming library for reading, writing, and manipulating Netpbm images.

• Host: GitHub
• URL: https://github.com/valeriyvan/swift-netpbm
• Owner: valeriyvan
• License: mit
• Created: 2024-05-23T05:46:56.000Z (6 months ago)
• Default Branch: main
• Last Pushed: 2024-08-02T04:45:07.000Z (3 months ago)
• Last Synced: 2024-08-02T05:45:22.065Z (3 months ago)
• Topics: image-manipulation, image-processing
• Language: C
• Homepage:
• Size: 408 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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README

        
# swift-netpbm

This Swift package vends C `libnetpbm` library for image manipulation as `libnetpbm` product. While the `libnetpbm` from the package is fully functional, it is not recommended for direct use in Swift due to compatibility issues. The original `libnetpbm` library is written in a way that does not integrate well with Swift. If there is an error while parsing an image file or during input-output operations, the library may call `exit` or use `longjmp`, depending on its initialization. An `exit` call will cause the app to terminate abruptly, resembling a crash. Utilizing [`longjmp` in Swift results in undefined behavior](https://forums.swift.org/t/on-the-road-to-swift-6/32862/146?page=8).

Porting C `libnetpbm` into Swift is work in progress and not yet ready to be used.

Reference to original [Netpbm homepage](https://netpbm.sourceforge.net/doc/).

[Netpbm in Wikipedia](https://en.wikipedia.org/wiki/Netpbm).

[Introduction into libnetpbm](https://netpbm.sourceforge.net/doc/libnetpbm.html).

[Libnetpbm User's Guide](https://netpbm.sourceforge.net/doc/libnetpbm_ug.html) which covers PAM functions recommended to be used.

References for legacy interfaces:

* [pbm Functions](https://netpbm.sourceforge.net/doc/libpbm.html);

* [pgm Functions](https://netpbm.sourceforge.net/doc/libpgm.html);

* [ppm Functions](https://netpbm.sourceforge.net/doc/libppm.html);

* [pnm Functions](https://netpbm.sourceforge.net/doc/libpnm.html).