51 lines
1.3 KiB
Plaintext
51 lines
1.3 KiB
Plaintext
(relative-include "zlib_helper.h")
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(add-cflag "-lz")
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; i tried doing this in carp, but it’s a bit of a pain to wrap the API
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; idiomatically, so for now you’ll only get regular inflation and deflation
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(defmodule ZLib
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(register-type ZBytes [
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len Int
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bytes String
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])
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(register-type ZRes)
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(defmodule ZRes
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(register ok? (Fn [&ZRes] Bool) "ZRes_is_ok")
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(register bytes (Fn [ZRes] ZBytes) "ZRes_bytes")
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(register str (Fn [ZRes] String) "ZRes_str")
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(register err (Fn [ZRes] String) "ZRes_err")
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)
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(deftype ZLevel
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(NoCompression [])
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(BestSpeed [])
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(BestCompression [])
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(DefaultCompression [])
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)
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(defmodule ZLevel
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(defn to-int [l]
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(match l
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(NoCompression) 0
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(BestSpeed) 1
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(BestCompression) 9
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(DefaultCompression) -1)))
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(register inflate- (Fn [ZBytes] ZRes) "ZLib_inflate_c")
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(defn inflate [s]
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(let [r (inflate- s)]
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(if (ZRes.ok? &r)
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(Result.Success (ZRes.str r))
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(Result.Error (ZRes.err r)))))
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(register deflate- (Fn [String Int] ZRes) "ZLib_deflate_c")
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(defn deflate-with [s level]
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(let [r (deflate- s (ZLevel.to-int level))]
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(if (ZRes.ok? &r)
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(Result.Success (ZRes.bytes r))
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(Result.Error (ZRes.err r)))))
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(defn deflate [s] (deflate-with s (ZLevel.DefaultCompression)))
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)
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