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1 | #!/bin/sh |
2 | # aside from this initial boilerplate, this is actually -*- scheme -*- code | |
3 | ||
4 | prefix="@prefix@" | |
5 | datarootdir="@datarootdir@" | |
6 | ||
7 | GUILE_LOAD_COMPILED_PATH="@guilemoduledir@:$GUILE_LOAD_COMPILED_PATH" | |
8 | export GUILE_LOAD_COMPILED_PATH | |
9 | ||
10 | main='(module-ref (resolve-interface '\''(guix-import)) '\'guix-import')' | |
11 | exec ${GUILE-@GUILE@} -L "@guilemoduledir@" -l "$0" \ | |
12 | -c "(apply $main (cdr (command-line)))" "$@" | |
13 | !# | |
233e7676 LC |
14 | ;;; GNU Guix --- Functional package management for GNU |
15 | ;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org> | |
10226c05 | 16 | ;;; |
233e7676 | 17 | ;;; This file is part of GNU Guix. |
10226c05 | 18 | ;;; |
233e7676 | 19 | ;;; GNU Guix is free software; you can redistribute it and/or modify it |
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20 | ;;; under the terms of the GNU General Public License as published by |
21 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
22 | ;;; your option) any later version. | |
23 | ;;; | |
233e7676 | 24 | ;;; GNU Guix is distributed in the hope that it will be useful, but |
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25 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of |
26 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
27 | ;;; GNU General Public License for more details. | |
28 | ;;; | |
29 | ;;; You should have received a copy of the GNU General Public License | |
233e7676 | 30 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. |
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31 | |
32 | (define-module (guix-import) | |
33 | #:use-module (guix ui) | |
34 | #:use-module (guix snix) | |
35 | #:use-module (guix utils) | |
36 | #:use-module (srfi srfi-1) | |
37 | #:use-module (srfi srfi-11) | |
38 | #:use-module (srfi srfi-26) | |
39 | #:use-module (srfi srfi-37) | |
40 | #:use-module (ice-9 match) | |
41 | #:use-module (ice-9 pretty-print) | |
42 | #:export (guix-import)) | |
43 | ||
44 | \f | |
45 | ;;; | |
46 | ;;; Helper. | |
47 | ;;; | |
48 | ||
49 | (define (newline-rewriting-port output) | |
50 | "Return an output port that rewrites strings containing the \\n escape | |
51 | to an actual newline. This works around the behavior of `pretty-print' | |
52 | and `write', which output these as \\n instead of actual newlines, | |
53 | whereas we want the `description' field to contain actual newlines | |
54 | rather than \\n." | |
55 | (define (write-string str) | |
56 | (let loop ((chars (string->list str))) | |
57 | (match chars | |
58 | (() | |
59 | #t) | |
60 | ((#\\ #\n rest ...) | |
61 | (newline output) | |
62 | (loop rest)) | |
63 | ((chr rest ...) | |
64 | (write-char chr output) | |
65 | (loop rest))))) | |
66 | ||
67 | (make-soft-port (vector (cut write-char <>) | |
68 | write-string | |
69 | (lambda _ #t) ; flush | |
70 | #f | |
71 | (lambda _ #t) ; close | |
72 | #f) | |
73 | "w")) | |
74 | ||
75 | \f | |
76 | ;;; | |
77 | ;;; Command-line options. | |
78 | ;;; | |
79 | ||
80 | (define %default-options | |
81 | '()) | |
82 | ||
83 | (define (show-help) | |
84 | (display (_ "Usage: guix-import NIXPKGS ATTRIBUTE | |
85 | Import and convert the Nix expression ATTRIBUTE of NIXPKGS.\n")) | |
86 | (display (_ " | |
87 | -h, --help display this help and exit")) | |
88 | (display (_ " | |
89 | -V, --version display version information and exit")) | |
90 | (newline) | |
3441e164 | 91 | (show-bug-report-information)) |
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92 | |
93 | (define %options | |
94 | ;; Specification of the command-line options. | |
95 | (list (option '(#\h "help") #f #f | |
96 | (lambda args | |
97 | (show-help) | |
98 | (exit 0))) | |
99 | (option '(#\V "version") #f #f | |
100 | (lambda args | |
101 | (show-version-and-exit "guix-import"))))) | |
102 | ||
103 | \f | |
104 | ;;; | |
105 | ;;; Entry point. | |
106 | ;;; | |
107 | ||
108 | (define (guix-import . args) | |
109 | (define (parse-options) | |
110 | ;; Return the alist of option values. | |
111 | (args-fold args %options | |
112 | (lambda (opt name arg result) | |
113 | (leave (_ "~A: unrecognized option~%") name)) | |
114 | (lambda (arg result) | |
115 | (alist-cons 'argument arg result)) | |
116 | %default-options)) | |
117 | ||
118 | (setlocale LC_ALL "") | |
119 | (textdomain "guix") | |
120 | (setvbuf (current-output-port) _IOLBF) | |
121 | (setvbuf (current-error-port) _IOLBF) | |
122 | ||
123 | (let* ((opts (parse-options)) | |
124 | (args (filter-map (match-lambda | |
125 | (('argument . value) | |
126 | value) | |
127 | (_ #f)) | |
128 | (reverse opts)))) | |
129 | (match args | |
130 | ((nixpkgs attribute) | |
131 | (let-values (((expr loc) | |
132 | (nixpkgs->guix-package nixpkgs attribute))) | |
133 | (format #t ";; converted from ~a:~a~%~%" | |
134 | (location-file loc) (location-line loc)) | |
135 | (pretty-print expr (newline-rewriting-port (current-output-port))))) | |
136 | (_ | |
137 | (leave (_ "wrong number of arguments~%")))))) |