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233e7676 | 1 | ;;; GNU Guix --- Functional package management for GNU |
7047133f | 2 | ;;; Copyright © 2012, 2013, 2014 Ludovic Courtès <ludo@gnu.org> |
1b3e9685 | 3 | ;;; Copyright © 2014 David Thompson <davet@gnu.org> |
10226c05 | 4 | ;;; |
233e7676 | 5 | ;;; This file is part of GNU Guix. |
10226c05 | 6 | ;;; |
233e7676 | 7 | ;;; GNU Guix is free software; you can redistribute it and/or modify it |
10226c05 LC |
8 | ;;; under the terms of the GNU General Public License as published by |
9 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
10 | ;;; your option) any later version. | |
11 | ;;; | |
233e7676 | 12 | ;;; GNU Guix is distributed in the hope that it will be useful, but |
10226c05 LC |
13 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | ;;; GNU General Public License for more details. | |
16 | ;;; | |
17 | ;;; You should have received a copy of the GNU General Public License | |
233e7676 | 18 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. |
10226c05 | 19 | |
e49951eb | 20 | (define-module (guix scripts import) |
10226c05 | 21 | #:use-module (guix ui) |
10226c05 LC |
22 | #:use-module (guix utils) |
23 | #:use-module (srfi srfi-1) | |
24 | #:use-module (srfi srfi-11) | |
25 | #:use-module (srfi srfi-26) | |
26 | #:use-module (srfi srfi-37) | |
1b3e9685 | 27 | #:use-module (ice-9 format) |
10226c05 LC |
28 | #:use-module (ice-9 match) |
29 | #:use-module (ice-9 pretty-print) | |
1b3e9685 DT |
30 | #:export (%standard-import-options |
31 | guix-import)) | |
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32 | |
33 | \f | |
34 | ;;; | |
35 | ;;; Helper. | |
36 | ;;; | |
37 | ||
38 | (define (newline-rewriting-port output) | |
39 | "Return an output port that rewrites strings containing the \\n escape | |
40 | to an actual newline. This works around the behavior of `pretty-print' | |
41 | and `write', which output these as \\n instead of actual newlines, | |
42 | whereas we want the `description' field to contain actual newlines | |
43 | rather than \\n." | |
44 | (define (write-string str) | |
45 | (let loop ((chars (string->list str))) | |
46 | (match chars | |
47 | (() | |
48 | #t) | |
49 | ((#\\ #\n rest ...) | |
50 | (newline output) | |
51 | (loop rest)) | |
52 | ((chr rest ...) | |
53 | (write-char chr output) | |
54 | (loop rest))))) | |
55 | ||
56 | (make-soft-port (vector (cut write-char <>) | |
57 | write-string | |
58 | (lambda _ #t) ; flush | |
59 | #f | |
60 | (lambda _ #t) ; close | |
61 | #f) | |
62 | "w")) | |
63 | ||
64 | \f | |
65 | ;;; | |
1b3e9685 | 66 | ;;; Command line options. |
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67 | ;;; |
68 | ||
1b3e9685 DT |
69 | (define %standard-import-options '()) |
70 | ||
71 | \f | |
72 | ;;; | |
73 | ;;; Entry point. | |
74 | ;;; | |
75 | ||
bc5844d1 | 76 | (define importers '("gnu" "nix" "pypi" "cpan" "hackage" "stackage" "elpa" "gem" |
fb1db385 | 77 | "cran" "crate" "texlive" "json")) |
1b3e9685 DT |
78 | |
79 | (define (resolve-importer name) | |
80 | (let ((module (resolve-interface | |
81 | `(guix scripts import ,(string->symbol name)))) | |
82 | (proc (string->symbol (string-append "guix-import-" name)))) | |
83 | (module-ref module proc))) | |
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84 | |
85 | (define (show-help) | |
69daee23 | 86 | (display (G_ "Usage: guix import IMPORTER ARGS ... |
1b3e9685 DT |
87 | Run IMPORTER with ARGS.\n")) |
88 | (newline) | |
69daee23 | 89 | (display (G_ "IMPORTER must be one of the importers listed below:\n")) |
2a4e2e4b | 90 | (newline) |
1b3e9685 | 91 | (format #t "~{ ~a~%~}" importers) |
69daee23 | 92 | (display (G_ " |
10226c05 | 93 | -h, --help display this help and exit")) |
69daee23 | 94 | (display (G_ " |
10226c05 LC |
95 | -V, --version display version information and exit")) |
96 | (newline) | |
3441e164 | 97 | (show-bug-report-information)) |
10226c05 | 98 | |
10226c05 | 99 | (define (guix-import . args) |
1b3e9685 DT |
100 | (match args |
101 | (() | |
102 | (format (current-error-port) | |
69daee23 | 103 | (G_ "guix import: missing importer name~%"))) |
1b3e9685 DT |
104 | ((or ("-h") ("--help")) |
105 | (show-help) | |
106 | (exit 0)) | |
107 | (("--version") | |
108 | (show-version-and-exit "guix import")) | |
109 | ((importer args ...) | |
110 | (if (member importer importers) | |
d68ba5f4 RW |
111 | (let ((print (lambda (expr) |
112 | (pretty-print expr (newline-rewriting-port | |
113 | (current-output-port)))))) | |
114 | (match (apply (resolve-importer importer) args) | |
115 | ((and expr ('package _ ...)) | |
116 | (print expr)) | |
117 | ((? list? expressions) | |
118 | (for-each (lambda (expr) | |
119 | (print expr) | |
120 | (newline)) | |
121 | expressions)) | |
122 | (x | |
69daee23 LC |
123 | (leave (G_ "'~a' import failed~%") importer)))) |
124 | (leave (G_ "~a: invalid importer~%") importer))))) |