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Move base32 code to (guix base32). 

* guix/utils.scm (bytevector-quintet-ref, bytevector-quintet-ref-right,
  bytevector-quintet-length, bytevector-quintet-fold,
  bytevector-quintet-fold-right, make-bytevector->base32-string,
  %nix-base32-chars, %rfc4648-base32-chars, bytevector->base32-string,
  bytevector->nix-base32-string, bytevector-quintet-set!,
  bytevector-quintet-set-right!, base32-string-unfold,
  base32-string-unfold-right, make-base32-string->bytevector,
  base32-string->bytevector, nix-base32-string->bytevector): Move to...
* guix/base32.scm: ... here.  New file.

* tests/utils.scm (%nix-hash, "bytevector->base32-string",
  "base32-string->bytevector", "nix-base32-string->bytevector", "sha256
  & bytevector->base32-string"): Move to...
* tests/base32.scm: ... here.  New file

* guix-download.in, guix/derivations.scm, guix/packages.scm,
  guix/snix.scm, tests/builders.scm, tests/derivations.scm: Adjust
  accordingly.
* guix.scm (%public-modules): Add `base32'.
This commit is contained in:
Ludovic Courtès 2012-11-11 22:33:28 +01:00
parent 9e782349fe
commit ddc29a782e
12 changed files with 392 additions and 322 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Makefile.am
View File

@ -23,6 +23,7 @@ bin_SCRIPTS = \
guix-package
MODULES = \
guix/base32.scm \
guix/utils.scm \
guix/derivations.scm \
guix/build-system.scm \
@ -137,6 +138,7 @@ distro/packages/bootstrap/i686-linux/guile-bootstrap-2.0.6.tar.xz:
nobase_nodist_guilemodule_DATA = $(GOBJECTS) guix/config.scm
TESTS = \
tests/base32.scm \
tests/builders.scm \
tests/derivations.scm \
tests/utils.scm \

1
guix-download.in
View File

@ -36,6 +36,7 @@ exec ${GUILE-@GUILE@} -L "@guilemoduledir@" -l "$0" \
#:use-module (guix ui)
#:use-module (guix store)
#:use-module (guix utils)
#:use-module (guix base32)
#:use-module (guix ftp-client)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)

3
guix.scm
View File

@ -23,7 +23,8 @@
(eval-when (eval load compile)
(begin
(define %public-modules
'(build-system
'(base32
build-system
derivations
ftp-client
ftp

288
guix/base32.scm Normal file
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@ -0,0 +1,288 @@
;;; Guix --- Nix package management from Guile. -*- coding: utf-8 -*-
;;; Copyright (C) 2012 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of Guix.
;;;
;;; Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix base32)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-60)
#:use-module (rnrs bytevectors)
#:use-module (ice-9 vlist)
#:export (bytevector-quintet-length
bytevector->base32-string
bytevector->nix-base32-string
base32-string->bytevector
nix-base32-string->bytevector))
;;; Commentary:
;;;
;;; A generic, customizable to convert bytevectors to/from a base32
;;; representation.
;;;
;;; Code:
(define bytevector-quintet-ref
(let* ((ref bytevector-u8-ref)
(ref+ (lambda (bv offset)
(let ((o (+ 1 offset)))
(if (>= o (bytevector-length bv))
0
(bytevector-u8-ref bv o)))))
(ref0 (lambda (bv offset)
(bit-field (ref bv offset) 3 8)))
(ref1 (lambda (bv offset)
(logior (ash (bit-field (ref bv offset) 0 3) 2)
(bit-field (ref+ bv offset) 6 8))))
(ref2 (lambda (bv offset)
(bit-field (ref bv offset) 1 6)))
(ref3 (lambda (bv offset)
(logior (ash (bit-field (ref bv offset) 0 1) 4)
(bit-field (ref+ bv offset) 4 8))))
(ref4 (lambda (bv offset)
(logior (ash (bit-field (ref bv offset) 0 4) 1)
(bit-field (ref+ bv offset) 7 8))))
(ref5 (lambda (bv offset)
(bit-field (ref bv offset) 2 7)))
(ref6 (lambda (bv offset)
(logior (ash (bit-field (ref bv offset) 0 2) 3)
(bit-field (ref+ bv offset) 5 8))))
(ref7 (lambda (bv offset)
(bit-field (ref bv offset) 0 5)))
(refs (vector ref0 ref1 ref2 ref3 ref4 ref5 ref6 ref7)))
(lambda (bv index)
"Return the INDEXth quintet of BV."
(let ((p (vector-ref refs (modulo index 8))))
(p bv (quotient (* index 5) 8))))))
(define bytevector-quintet-ref-right
(let* ((ref bytevector-u8-ref)
(ref+ (lambda (bv offset)
(let ((o (+ 1 offset)))
(if (>= o (bytevector-length bv))
0
(bytevector-u8-ref bv o)))))
(ref0 (lambda (bv offset)
(bit-field (ref bv offset) 0 5)))
(ref1 (lambda (bv offset)
(logior (bit-field (ref bv offset) 5 8)
(ash (bit-field (ref+ bv offset) 0 2) 3))))
(ref2 (lambda (bv offset)
(bit-field (ref bv offset) 2 7)))
(ref3 (lambda (bv offset)
(logior (bit-field (ref bv offset) 7 8)
(ash (bit-field (ref+ bv offset) 0 4) 1))))
(ref4 (lambda (bv offset)
(logior (bit-field (ref bv offset) 4 8)
(ash (bit-field (ref+ bv offset) 0 1) 4))))
(ref5 (lambda (bv offset)
(bit-field (ref bv offset) 1 6)))
(ref6 (lambda (bv offset)
(logior (bit-field (ref bv offset) 6 8)
(ash (bit-field (ref+ bv offset) 0 3) 2))))
(ref7 (lambda (bv offset)
(bit-field (ref bv offset) 3 8)))
(refs (vector ref0 ref1 ref2 ref3 ref4 ref5 ref6 ref7)))
(lambda (bv index)
"Return the INDEXth quintet of BV, assuming quintets start from the
least-significant bits, contrary to what RFC 4648 describes."
(let ((p (vector-ref refs (modulo index 8))))
(p bv (quotient (* index 5) 8))))))
(define (bytevector-quintet-length bv)
"Return the number of quintets (including truncated ones) available in BV."
(ceiling (/ (* (bytevector-length bv) 8) 5)))
(define (bytevector-quintet-fold proc init bv)
"Return the result of applying PROC to each quintet of BV and the result of
the previous application or INIT."
(define len
(bytevector-quintet-length bv))
(let loop ((i 0)
(r init))
(if (= i len)
r
(loop (1+ i) (proc (bytevector-quintet-ref bv i) r)))))
(define (bytevector-quintet-fold-right proc init bv)
"Return the result of applying PROC to each quintet of BV and the result of
the previous application or INIT."
(define len
(bytevector-quintet-length bv))
(let loop ((i len)
(r init))
(if (zero? i)
r
(let ((j (- i 1)))
(loop j (proc (bytevector-quintet-ref-right bv j) r))))))
(define (make-bytevector->base32-string quintet-fold base32-chars)
(lambda (bv)
"Return a base32 encoding of BV using BASE32-CHARS as the alphabet."
(let ((chars (quintet-fold (lambda (q r)
(cons (vector-ref base32-chars q)
r))
'()
bv)))
(list->string (reverse chars)))))
(define %nix-base32-chars
;; See `libutil/hash.cc'.
#(#\0 #\1 #\2 #\3 #\4 #\5 #\6 #\7 #\8 #\9
#\a #\b #\c #\d #\f #\g #\h #\i #\j #\k #\l #\m #\n
#\p #\q #\r #\s #\v #\w #\x #\y #\z))
(define %rfc4648-base32-chars
#(#\a #\b #\c #\d #\e #\f #\g #\h #\i #\j #\k #\l #\m
#\n #\o #\p #\q #\r #\s #\t #\u #\v #\w #\x #\y #\z
#\2 #\3 #\4 #\5 #\6 #\7))
(define bytevector->base32-string
(make-bytevector->base32-string bytevector-quintet-fold
%rfc4648-base32-chars))
(define bytevector->nix-base32-string
(make-bytevector->base32-string bytevector-quintet-fold-right
%nix-base32-chars))
(define bytevector-quintet-set!
(let* ((setq! (lambda (bv offset start stop value)
(let ((v (bytevector-u8-ref bv offset))
(w (arithmetic-shift value start))
(m (bitwise-xor (1- (expt 2 stop))
(1- (expt 2 start)))))
(bytevector-u8-set! bv offset
(bitwise-merge m w v)))))
(set0! (lambda (bv offset value)
(setq! bv offset 3 8 value)))
(set1! (lambda (bv offset value)
(setq! bv offset 0 3 (bit-field value 2 5))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 6 8 (bit-field value 0 2)))))
(set2! (lambda (bv offset value)
(setq! bv offset 1 6 value)))
(set3! (lambda (bv offset value)
(setq! bv offset 0 1 (bit-field value 4 5))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 4 8 (bit-field value 0 4)))))
(set4! (lambda (bv offset value)
(setq! bv offset 0 4 (bit-field value 1 5))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 7 8 (bit-field value 0 1)))))
(set5! (lambda (bv offset value)
(setq! bv offset 2 7 value)))
(set6! (lambda (bv offset value)
(setq! bv offset 0 2 (bit-field value 3 5))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 5 8 (bit-field value 0 3)))))
(set7! (lambda (bv offset value)
(setq! bv offset 0 5 value)))
(sets (vector set0! set1! set2! set3! set4! set5! set6! set7!)))
(lambda (bv index value)
"Set the INDEXth quintet of BV to VALUE."
(let ((p (vector-ref sets (modulo index 8))))
(p bv (quotient (* index 5) 8) (logand value #x1f))))))
(define bytevector-quintet-set-right!
(let* ((setq! (lambda (bv offset start stop value)
(let ((v (bytevector-u8-ref bv offset))
(w (arithmetic-shift value start))
(m (bitwise-xor (1- (expt 2 stop))
(1- (expt 2 start)))))
(bytevector-u8-set! bv offset
(bitwise-merge m w v)))))
(set0! (lambda (bv offset value)
(setq! bv offset 0 5 value)))
(set1! (lambda (bv offset value)
(setq! bv offset 5 8 (bit-field value 0 3))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 0 2 (bit-field value 3 5)))))
(set2! (lambda (bv offset value)
(setq! bv offset 2 7 value)))
(set3! (lambda (bv offset value)
(setq! bv offset 7 8 (bit-field value 0 1))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 0 4 (bit-field value 1 5)))))
(set4! (lambda (bv offset value)
(setq! bv offset 4 8 (bit-field value 0 4))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 0 1 (bit-field value 4 5)))))
(set5! (lambda (bv offset value)
(setq! bv offset 1 6 value)))
(set6! (lambda (bv offset value)
(setq! bv offset 6 8 (bit-field value 0 2))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 0 3 (bit-field value 2 5)))))
(set7! (lambda (bv offset value)
(setq! bv offset 3 8 value)))
(sets (vector set0! set1! set2! set3! set4! set5! set6! set7!)))
(lambda (bv index value)
"Set the INDEXth quintet of BV to VALUE, assuming quintets start from
the least-significant bits."
(let ((p (vector-ref sets (modulo index 8))))
(p bv (quotient (* index 5) 8) (logand value #x1f))))))
(define (base32-string-unfold f s)
"Given procedure F which, when applied to a character, returns the
corresponding quintet, return the bytevector corresponding to string S."
(define len (string-length s))
(let ((bv (make-bytevector (quotient (* len 5) 8))))
(string-fold (lambda (chr index)
(bytevector-quintet-set! bv index (f chr))
(+ 1 index))
0
s)
bv))
(define (base32-string-unfold-right f s)
"Given procedure F which, when applied to a character, returns the
corresponding quintet, return the bytevector corresponding to string S,
starting from the right of S."
(define len (string-length s))
(let ((bv (make-bytevector (quotient (* len 5) 8))))
(string-fold-right (lambda (chr index)
(bytevector-quintet-set-right! bv index (f chr))
(+ 1 index))
0
s)
bv))
(define (make-base32-string->bytevector base32-string-unfold base32-chars)
(let ((char->value (let loop ((i 0)
(v vlist-null))
(if (= i (vector-length base32-chars))
v
(loop (+ 1 i)
(vhash-consv (vector-ref base32-chars i)
i v))))))
(lambda (s)
"Return the binary representation of base32 string S as a bytevector."
(base32-string-unfold (lambda (chr)
(or (and=> (vhash-assv chr char->value) cdr)
(error "invalid base32 character" chr)))
s))))
(define base32-string->bytevector
(make-base32-string->bytevector base32-string-unfold %rfc4648-base32-chars))
(define nix-base32-string->bytevector
(make-base32-string->bytevector base32-string-unfold-right %nix-base32-chars))
;;; base32.scm ends here

1
guix/derivations.scm
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@ -26,6 +26,7 @@
#:use-module (ice-9 rdelim)
#:use-module (guix store)
#:use-module (guix utils)
#:use-module (guix base32)
#:export (<derivation>
derivation?
derivation-outputs

1
guix/packages.scm
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@ -19,6 +19,7 @@
(define-module (guix packages)
#:use-module (guix utils)
#:use-module (guix store)
#:use-module (guix base32)
#:use-module (guix build-system)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)

1
guix/snix.scm
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@ -32,6 +32,7 @@
#:use-module (system foreign)
#:use-module (rnrs bytevectors)
#:use-module (guix utils)
#:use-module (guix base32)
#:use-module (guix config)
#:export (open-nixpkgs
xml->snix

264
guix/utils.scm
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@ -33,12 +33,7 @@
#:use-module (ice-9 match)
#:use-module (ice-9 format)
#:autoload (system foreign) (pointer->procedure)
#:export (bytevector-quintet-length
bytevector->base32-string
bytevector->nix-base32-string
bytevector->base16-string
base32-string->bytevector
nix-base32-string->bytevector
#:export (bytevector->base16-string
base16-string->bytevector
sha256
@ -79,263 +74,6 @@ evaluate to a simple datum."
(_ #`'#,(datum->syntax s val)))))))
v))))
;;;
;;; Base 32.
;;;
(define bytevector-quintet-ref
(let* ((ref bytevector-u8-ref)
(ref+ (lambda (bv offset)
(let ((o (+ 1 offset)))
(if (>= o (bytevector-length bv))
0
(bytevector-u8-ref bv o)))))
(ref0 (lambda (bv offset)
(bit-field (ref bv offset) 3 8)))
(ref1 (lambda (bv offset)
(logior (ash (bit-field (ref bv offset) 0 3) 2)
(bit-field (ref+ bv offset) 6 8))))
(ref2 (lambda (bv offset)
(bit-field (ref bv offset) 1 6)))
(ref3 (lambda (bv offset)
(logior (ash (bit-field (ref bv offset) 0 1) 4)
(bit-field (ref+ bv offset) 4 8))))
(ref4 (lambda (bv offset)
(logior (ash (bit-field (ref bv offset) 0 4) 1)
(bit-field (ref+ bv offset) 7 8))))
(ref5 (lambda (bv offset)
(bit-field (ref bv offset) 2 7)))
(ref6 (lambda (bv offset)
(logior (ash (bit-field (ref bv offset) 0 2) 3)
(bit-field (ref+ bv offset) 5 8))))
(ref7 (lambda (bv offset)
(bit-field (ref bv offset) 0 5)))
(refs (vector ref0 ref1 ref2 ref3 ref4 ref5 ref6 ref7)))
(lambda (bv index)
"Return the INDEXth quintet of BV."
(let ((p (vector-ref refs (modulo index 8))))
(p bv (quotient (* index 5) 8))))))
(define bytevector-quintet-ref-right
(let* ((ref bytevector-u8-ref)
(ref+ (lambda (bv offset)
(let ((o (+ 1 offset)))
(if (>= o (bytevector-length bv))
0
(bytevector-u8-ref bv o)))))
(ref0 (lambda (bv offset)
(bit-field (ref bv offset) 0 5)))
(ref1 (lambda (bv offset)
(logior (bit-field (ref bv offset) 5 8)
(ash (bit-field (ref+ bv offset) 0 2) 3))))
(ref2 (lambda (bv offset)
(bit-field (ref bv offset) 2 7)))
(ref3 (lambda (bv offset)
(logior (bit-field (ref bv offset) 7 8)
(ash (bit-field (ref+ bv offset) 0 4) 1))))
(ref4 (lambda (bv offset)
(logior (bit-field (ref bv offset) 4 8)
(ash (bit-field (ref+ bv offset) 0 1) 4))))
(ref5 (lambda (bv offset)
(bit-field (ref bv offset) 1 6)))
(ref6 (lambda (bv offset)
(logior (bit-field (ref bv offset) 6 8)
(ash (bit-field (ref+ bv offset) 0 3) 2))))
(ref7 (lambda (bv offset)
(bit-field (ref bv offset) 3 8)))
(refs (vector ref0 ref1 ref2 ref3 ref4 ref5 ref6 ref7)))
(lambda (bv index)
"Return the INDEXth quintet of BV, assuming quintets start from the
least-significant bits, contrary to what RFC 4648 describes."
(let ((p (vector-ref refs (modulo index 8))))
(p bv (quotient (* index 5) 8))))))
(define (bytevector-quintet-length bv)
"Return the number of quintets (including truncated ones) available in BV."
(ceiling (/ (* (bytevector-length bv) 8) 5)))
(define (bytevector-quintet-fold proc init bv)
"Return the result of applying PROC to each quintet of BV and the result of
the previous application or INIT."
(define len
(bytevector-quintet-length bv))
(let loop ((i 0)
(r init))
(if (= i len)
r
(loop (1+ i) (proc (bytevector-quintet-ref bv i) r)))))
(define (bytevector-quintet-fold-right proc init bv)
"Return the result of applying PROC to each quintet of BV and the result of
the previous application or INIT."
(define len
(bytevector-quintet-length bv))
(let loop ((i len)
(r init))
(if (zero? i)
r
(let ((j (- i 1)))
(loop j (proc (bytevector-quintet-ref-right bv j) r))))))
(define (make-bytevector->base32-string quintet-fold base32-chars)
(lambda (bv)
"Return a base32 encoding of BV using BASE32-CHARS as the alphabet."
(let ((chars (quintet-fold (lambda (q r)
(cons (vector-ref base32-chars q)
r))
'()
bv)))
(list->string (reverse chars)))))
(define %nix-base32-chars
;; See `libutil/hash.cc'.
#(#\0 #\1 #\2 #\3 #\4 #\5 #\6 #\7 #\8 #\9
#\a #\b #\c #\d #\f #\g #\h #\i #\j #\k #\l #\m #\n
#\p #\q #\r #\s #\v #\w #\x #\y #\z))
(define %rfc4648-base32-chars
#(#\a #\b #\c #\d #\e #\f #\g #\h #\i #\j #\k #\l #\m
#\n #\o #\p #\q #\r #\s #\t #\u #\v #\w #\x #\y #\z
#\2 #\3 #\4 #\5 #\6 #\7))
(define bytevector->base32-string
(make-bytevector->base32-string bytevector-quintet-fold
%rfc4648-base32-chars))
(define bytevector->nix-base32-string
(make-bytevector->base32-string bytevector-quintet-fold-right
%nix-base32-chars))
(define bytevector-quintet-set!
(let* ((setq! (lambda (bv offset start stop value)
(let ((v (bytevector-u8-ref bv offset))
(w (arithmetic-shift value start))
(m (bitwise-xor (1- (expt 2 stop))
(1- (expt 2 start)))))
(bytevector-u8-set! bv offset
(bitwise-merge m w v)))))
(set0! (lambda (bv offset value)
(setq! bv offset 3 8 value)))
(set1! (lambda (bv offset value)
(setq! bv offset 0 3 (bit-field value 2 5))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 6 8 (bit-field value 0 2)))))
(set2! (lambda (bv offset value)
(setq! bv offset 1 6 value)))
(set3! (lambda (bv offset value)
(setq! bv offset 0 1 (bit-field value 4 5))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 4 8 (bit-field value 0 4)))))
(set4! (lambda (bv offset value)
(setq! bv offset 0 4 (bit-field value 1 5))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 7 8 (bit-field value 0 1)))))
(set5! (lambda (bv offset value)
(setq! bv offset 2 7 value)))
(set6! (lambda (bv offset value)
(setq! bv offset 0 2 (bit-field value 3 5))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 5 8 (bit-field value 0 3)))))
(set7! (lambda (bv offset value)
(setq! bv offset 0 5 value)))
(sets (vector set0! set1! set2! set3! set4! set5! set6! set7!)))
(lambda (bv index value)
"Set the INDEXth quintet of BV to VALUE."
(let ((p (vector-ref sets (modulo index 8))))
(p bv (quotient (* index 5) 8) (logand value #x1f))))))
(define bytevector-quintet-set-right!
(let* ((setq! (lambda (bv offset start stop value)
(let ((v (bytevector-u8-ref bv offset))
(w (arithmetic-shift value start))
(m (bitwise-xor (1- (expt 2 stop))
(1- (expt 2 start)))))
(bytevector-u8-set! bv offset
(bitwise-merge m w v)))))
(set0! (lambda (bv offset value)
(setq! bv offset 0 5 value)))
(set1! (lambda (bv offset value)
(setq! bv offset 5 8 (bit-field value 0 3))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 0 2 (bit-field value 3 5)))))
(set2! (lambda (bv offset value)
(setq! bv offset 2 7 value)))
(set3! (lambda (bv offset value)
(setq! bv offset 7 8 (bit-field value 0 1))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 0 4 (bit-field value 1 5)))))
(set4! (lambda (bv offset value)
(setq! bv offset 4 8 (bit-field value 0 4))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 0 1 (bit-field value 4 5)))))
(set5! (lambda (bv offset value)
(setq! bv offset 1 6 value)))
(set6! (lambda (bv offset value)
(setq! bv offset 6 8 (bit-field value 0 2))
(or (= (+ 1 offset) (bytevector-length bv))
(setq! bv (+ 1 offset) 0 3 (bit-field value 2 5)))))
(set7! (lambda (bv offset value)
(setq! bv offset 3 8 value)))
(sets (vector set0! set1! set2! set3! set4! set5! set6! set7!)))
(lambda (bv index value)
"Set the INDEXth quintet of BV to VALUE, assuming quintets start from
the least-significant bits."
(let ((p (vector-ref sets (modulo index 8))))
(p bv (quotient (* index 5) 8) (logand value #x1f))))))
(define (base32-string-unfold f s)
"Given procedure F which, when applied to a character, returns the
corresponding quintet, return the bytevector corresponding to string S."
(define len (string-length s))
(let ((bv (make-bytevector (quotient (* len 5) 8))))
(string-fold (lambda (chr index)
(bytevector-quintet-set! bv index (f chr))
(+ 1 index))
0
s)
bv))
(define (base32-string-unfold-right f s)
"Given procedure F which, when applied to a character, returns the
corresponding quintet, return the bytevector corresponding to string S,
starting from the right of S."
(define len (string-length s))
(let ((bv (make-bytevector (quotient (* len 5) 8))))
(string-fold-right (lambda (chr index)
(bytevector-quintet-set-right! bv index (f chr))
(+ 1 index))
0
s)
bv))
(define (make-base32-string->bytevector base32-string-unfold base32-chars)
(let ((char->value (let loop ((i 0)
(v vlist-null))
(if (= i (vector-length base32-chars))
v
(loop (+ 1 i)
(vhash-consv (vector-ref base32-chars i)
i v))))))
(lambda (s)
"Return the binary representation of base32 string S as a bytevector."
(base32-string-unfold (lambda (chr)
(or (and=> (vhash-assv chr char->value) cdr)
(error "invalid base32 character" chr)))
s))))
(define base32-string->bytevector
(make-base32-string->bytevector base32-string-unfold %rfc4648-base32-chars))
(define nix-base32-string->bytevector
(make-base32-string->bytevector base32-string-unfold-right %nix-base32-chars))
;;;
;;; Base 16.

93
tests/base32.scm Normal file
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@ -0,0 +1,93 @@
;;; Guix --- Nix package management from Guile. -*- coding: utf-8 -*-
;;; Copyright (C) 2012 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of Guix.
;;;
;;; Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (test-base32)
#:use-module (guix base32)
#:use-module (guix utils)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-64)
#:use-module (ice-9 rdelim)
#:use-module (ice-9 popen)
#:use-module (rnrs bytevectors)
#:use-module (rnrs io ports))
;; Test the (guix base32) module.
(define %nix-hash
(or (getenv "NIX_HASH")
"nix-hash"))
(test-begin "base32")
(test-assert "bytevector->base32-string"
(fold (lambda (bv expected result)
(and result
(string=? (bytevector->base32-string bv)
expected)))
#t
;; Examples from RFC 4648.
(map string->utf8 '("" "f" "fo" "foo" "foob" "fooba" "foobar"))
'(""
"my"
"mzxq"
"mzxw6"
"mzxw6yq"
"mzxw6ytb"
"mzxw6ytboi")))
(test-assert "base32-string->bytevector"
(every (lambda (bv)
(equal? (base32-string->bytevector
(bytevector->base32-string bv))
bv))
;; Examples from RFC 4648.
(map string->utf8 '("" "f" "fo" "foo" "foob" "fooba" "foobar"))))
(test-assert "nix-base32-string->bytevector"
(every (lambda (bv)
(equal? (nix-base32-string->bytevector
(bytevector->nix-base32-string bv))
bv))
;; Examples from RFC 4648.
(map string->utf8 '("" "f" "fo" "foo" "foob" "fooba" "foobar"))))
;; The following tests requires `nix-hash' in $PATH.
(test-skip (if (false-if-exception (system* %nix-hash "--version"))
0
1))
(test-assert "sha256 & bytevector->nix-base32-string"
(let ((file (search-path %load-path "tests/test.drv")))
(equal? (bytevector->nix-base32-string
(sha256 (call-with-input-file file get-bytevector-all)))
(let* ((c (format #f "~a --type sha256 --base32 --flat \"~a\""
%nix-hash file))
(p (open-input-pipe c))
(l (read-line p)))
(close-pipe p)
l))))
(test-end)
(exit (= (test-runner-fail-count (test-runner-current)) 0))
;;; Local Variables:
;;; eval: (put 'test-assert 'scheme-indent-function 1)
;;; End:

1
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@ -23,6 +23,7 @@
#:use-module (guix build-system gnu)
#:use-module (guix store)
#:use-module (guix utils)
#:use-module (guix base32)
#:use-module (guix derivations)
#:use-module ((guix packages) #:select (package-derivation))
#:use-module (distro packages bootstrap)

1
tests/derivations.scm
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@ -21,6 +21,7 @@
#:use-module (guix derivations)
#:use-module (guix store)
#:use-module (guix utils)
#:use-module (guix base32)
#:use-module ((guix packages) #:select (package-derivation))
#:use-module (distro packages bootstrap)
#:use-module (srfi srfi-1)

58
tests/utils.scm
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@ -16,59 +16,17 @@
;;; You should have received a copy of the GNU General Public License
;;; along with Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (test-utils)
#:use-module (guix utils)
#:use-module ((guix store) #:select (store-path-package-name))
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-64)
#:use-module (rnrs bytevectors)
#:use-module (rnrs io ports)
#:use-module (ice-9 rdelim)
#:use-module (ice-9 popen)
#:use-module (ice-9 match))
(define %nix-hash
(or (getenv "NIX_HASH")
"nix-hash"))
(test-begin "utils")
(test-assert "bytevector->base32-string"
(fold (lambda (bv expected result)
(and result
(string=? (bytevector->base32-string bv)
expected)))
#t
;; Examples from RFC 4648.
(map string->utf8 '("" "f" "fo" "foo" "foob" "fooba" "foobar"))
'(""
"my"
"mzxq"
"mzxw6"
"mzxw6yq"
"mzxw6ytb"
"mzxw6ytboi")))
(test-assert "base32-string->bytevector"
(every (lambda (bv)
(equal? (base32-string->bytevector
(bytevector->base32-string bv))
bv))
;; Examples from RFC 4648.
(map string->utf8 '("" "f" "fo" "foo" "foob" "fooba" "foobar"))))
(test-assert "nix-base32-string->bytevector"
(every (lambda (bv)
(equal? (nix-base32-string->bytevector
(bytevector->nix-base32-string bv))
bv))
;; Examples from RFC 4648.
(map string->utf8 '("" "f" "fo" "foo" "foob" "fooba" "foobar"))))
(test-assert "bytevector->base16-string->bytevector"
(every (lambda (bv)
(equal? (base16-string->bytevector
@ -76,22 +34,6 @@
bv))
(map string->utf8 '("" "f" "fo" "foo" "foob" "fooba" "foobar"))))
;; The following tests requires `nix-hash' in $PATH.
(test-skip (if (false-if-exception (system* %nix-hash "--version"))
0
1))
(test-assert "sha256 & bytevector->nix-base32-string"
(let ((file (search-path %load-path "tests/test.drv")))
(equal? (bytevector->nix-base32-string
(sha256 (call-with-input-file file get-bytevector-all)))
(let* ((c (format #f "~a --type sha256 --base32 --flat \"~a\""
%nix-hash file))
(p (open-input-pipe c))
(l (read-line p)))
(close-pipe p)
l))))
(test-assert "gnu-triplet->nix-system"
(let ((samples '(("i586-gnu0.3" "i686-gnu")
("x86_64-unknown-linux-gnu" "x86_64-linux")