25 lines
574 B
Scheme
25 lines
574 B
Scheme
#lang scheme
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(require web-server/stuffers/stuffer
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web-server/stuffers/store
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file/md5)
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(define hash-fun/c
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(bytes? . -> . bytes?))
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(define (hash-stuffer hash store)
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(make-stuffer
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(lambda (v)
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(define hv (hash v))
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((store-write store) hv v)
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hv)
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(lambda (hv)
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((store-read store) hv))))
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(define (md5-stuffer home)
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(hash-stuffer md5 (dir-store home)))
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(provide/contract
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[hash-fun/c contract?]
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[hash-stuffer (hash-fun/c store? . -> . (stuffer/c bytes? bytes?))]
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[md5-stuffer (path-string? . -> . (stuffer/c bytes? bytes?))])
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