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(.module:
[lux #*
["." host (#+ import:)]
[data
["." binary (#+ Binary)]
["." text
["%" format (#+ format)]]
[number
["." nat]]]])
## TODO: Replace with pure-Lux implementations of these algorithms
## https://en.wikipedia.org/wiki/SHA-1#SHA-1_pseudocode
## https://en.wikipedia.org/wiki/MD5#Algorithm
(import: #long java/lang/String)
(import: #long java/security/MessageDigest
(#static getInstance [java/lang/String] java/security/MessageDigest)
(digest [[byte]] [byte]))
(type: #export Hash
Binary)
(template [<name> <algorithm>]
[(def: #export (<name> value)
(-> Binary Hash)
(|> (java/security/MessageDigest::getInstance [<algorithm>])
(java/security/MessageDigest::digest [value])))]
[sha1 "SHA-1"]
[md5 "MD5"]
)
(def: #export representation
(-> Hash Text)
(binary.fold (function (_ byte representation)
(let [hex (:: nat.hex encode byte)
hex (case (text.size hex)
1 (format "0" hex)
_ hex)]
(format representation hex)))
""))
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