b810c46a45
users.sterni.nix.utf8 implements UTF-8 decoding in pure nix. We implement the decoding as a simple state machine which is fed one byte at a time. Decoding whole strings is possible by subsequently calling step. This is done in decode which uses builtins.foldl' to get around recursion restrictions and a neat trick using builtins.deepSeq puck showed me limiting the size of the thunks in a foldl' (which can also cause a stack overflow). This makes decoding arbitrarily large UTF-8 files into codepoints using nix theoretically possible, but it is not really practical: Decoding a 36KB LaTeX file I had lying around takes ~160s on my laptop. Change-Id: Iab8c973dac89074ec280b4880a7408e0b3d19bc7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/2590 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org> |
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| clhs-lookup | ||
| nix | ||
| keys.nix | ||
| OWNERS | ||