blob: af5c5897e00d73ee31240d9a5165f945fb637609 (
about) (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
#!/bin/sh
# aside from this initial boilerplate, this is actually -*- scheme -*- code
prefix="@prefix@"
datarootdir="@datarootdir@"
GUILE_LOAD_COMPILED_PATH="@guilemoduledir@:$GUILE_LOAD_COMPILED_PATH"
export GUILE_LOAD_COMPILED_PATH
main='(module-ref (resolve-interface '\''(guix-import)) '\'guix-import')'
exec ${GUILE-@GUILE@} -L "@guilemoduledir@" -l "$0" \
-c "(apply $main (cdr (command-line)))" "$@"
!#
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU 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.
;;;
;;; GNU 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 GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix-import)
#:use-module (guix ui)
#:use-module (guix snix)
#:use-module (guix utils)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-37)
#:use-module (ice-9 match)
#:use-module (ice-9 pretty-print)
#:export (guix-import))
;;;
;;; Helper.
;;;
(define (newline-rewriting-port output)
"Return an output port that rewrites strings containing the \\n escape
to an actual newline. This works around the behavior of `pretty-print'
and `write', which output these as \\n instead of actual newlines,
whereas we want the `description' field to contain actual newlines
rather than \\n."
(define (write-string str)
(let loop ((chars (string->list str)))
(match chars
(()
#t)
((#\\ #\n rest ...)
(newline output)
(loop rest))
((chr rest ...)
(write-char chr output)
(loop rest)))))
(make-soft-port (vector (cut write-char <>)
write-string
(lambda _ #t) ; flush
#f
(lambda _ #t) ; close
#f)
"w"))
;;;
;;; Command-line options.
;;;
(define %default-options
'())
(define (show-help)
(display (_ "Usage: guix-import NIXPKGS ATTRIBUTE
Import and convert the Nix expression ATTRIBUTE of NIXPKGS.\n"))
(display (_ "
-h, --help display this help and exit"))
(display (_ "
-V, --version display version information and exit"))
(newline)
(show-bug-report-information))
(define %options
;; Specification of the command-line options.
(list (option '(#\h "help") #f #f
(lambda args
(show-help)
(exit 0)))
(option '(#\V "version") #f #f
(lambda args
(show-version-and-exit "guix-import")))))
;;;
;;; Entry point.
;;;
(define (guix-import . args)
(define (parse-options)
;; Return the alist of option values.
(args-fold args %options
(lambda (opt name arg result)
(leave (_ "~A: unrecognized option~%") name))
(lambda (arg result)
(alist-cons 'argument arg result))
%default-options))
(setlocale LC_ALL "")
(textdomain "guix")
(setvbuf (current-output-port) _IOLBF)
(setvbuf (current-error-port) _IOLBF)
(let* ((opts (parse-options))
(args (filter-map (match-lambda
(('argument . value)
value)
(_ #f))
(reverse opts))))
(match args
((nixpkgs attribute)
(let-values (((expr loc)
(nixpkgs->guix-package nixpkgs attribute)))
(format #t ";; converted from ~a:~a~%~%"
(location-file loc) (location-line loc))
(pretty-print expr (newline-rewriting-port (current-output-port)))))
(_
(leave (_ "wrong number of arguments~%"))))))
|
