Photoshop PSD format

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Witness
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Photoshop PSD format

Postby Witness » Tue Oct 31, 2017 3:01 am

Comment in some code:

Code: Select all

      // At this point, I'd like to take a moment to speak to you about the Adobe PSD format.
      // PSD is not a good format. PSD is not even a bad format. Calling it such would be an
      // insult to other bad formats, such as PCX or JPEG. No, PSD is an abysmal format. Having
      // worked on this code for several weeks now, my hate for PSD has grown to a raging fire
      // that burns with the fierce passion of a million suns.
      // If there are two different ways of doing something, PSD will do both, in different
      // places. It will then make up three more ways no sane human would think of, and do those
      // too. PSD makes inconsistency an art form. Why, for instance, did it suddenly decide
      // that *these* particular chunks should be aligned to four bytes, and that this alignement
      // should *not* be included in the size? Other chunks in other places are either unaligned,
      // or aligned with the alignment included in the size. Here, though, it is not included.
      // Either one of these three behaviours would be fine. A sane format would pick one. PSD,
      // of course, uses all three, and more.
      // Trying to get data out of a PSD file is like trying to find something in the attic of
      // your eccentric old uncle who died in a freak freshwater shark attack on his 58th
      // birthday. That last detail may not be important for the purposes of the simile, but
      // at this point I am spending a lot of time imagining amusing fates for the people
      // responsible for this Rube Goldberg of a file format.
      // Earlier, I tried to get a hold of the latest specs for the PSD file format. To do this,
      // I had to apply to them for permission to apply to them to have them consider sending
      // me this sacred tome. This would have involved faxing them a copy of some document or
      // other, probably signed in blood. I can only imagine that they make this process so
      // difficult because they are intensely ashamed of having created this abomination. I
      // was naturally not gullible enough to go through with this procedure, but if I had done
      // so, I would have printed out every single page of the spec, and set them all on fire.
      // Were it within my power, I would gather every single copy of those specs, and launch
      // them on a spaceship directly into the sun.
      //
      // PSD is not my favourite file format.

https://github.com/gco/xee/blob/master/XeePhotoshopLoader.m#L108

:mrgreen:

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