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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
;;; Consfigurator -- Lisp declarative configuration management system
;;; Copyright (C) 2020-2021 Sean Whitton <spwhitton@spwhitton.name>
;;; This file 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, or (at your option)
;;; any later version.
;;; This file 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 this program. If not, see <http://www.gnu.org/licenses/>.
(in-package :consfigurator)
(defun noop (&rest args)
"Accept any arguments and do nothing."
(declare (ignore args))
(values))
(defun lines (text)
(split-string (stripln text) :separator '(#\Newline #\Return)))
(defun unlines (lines)
(format nil "~{~A~%~}" lines))
(defmacro symbol-named (name symbol)
`(and (symbolp ,symbol)
(string= (symbol-name ',name) (symbol-name ,symbol))))
(defun normalise-system (system)
(etypecase system
(string system)
(symbol (string-downcase
(symbol-name system)))))
(defun memstring= (string list)
(member string list :test #'string=))
(defun assert-ordinary-ll-member (arg)
"Assert that ARG is not an implementation-specific lambda list keyword or a
lambda list keyword which is not permitted in ordinary lambda lists.
Consfigurator's property-writing macros do not support lambda list keywords
which fail this assertion."
(or
(not
(member arg
'#.(set-difference lambda-list-keywords
'(&optional &rest &key &allow-other-keys &aux))))
(simple-program-error
"Implementation-specific or non-ordinary lambda list keyword ~A not
supported."
arg)))
(defun ordinary-ll-without-&aux (ll)
(loop for arg in ll
do (assert-ordinary-ll-member arg)
if (eq '&aux arg) return accum
else collect arg into accum
finally (return accum)))
(defun ordinary-ll-variable-names (ll)
(loop for arg in ll
for arg* = (ensure-car arg)
do (assert-ordinary-ll-member arg)
unless (char= #\& (char (symbol-name arg*) 0))
collect arg*))
(defmacro define-simple-error (name &optional docstring)
`(progn
(define-condition ,name (simple-error) ()
,@(and docstring `((:documentation ,docstring))))
(defun ,name (message &rest args)
,@(and docstring `(,docstring))
(error ',name :format-control message :format-arguments args))))
(defmacro form-beginning-with (sym form)
`(and (listp ,form) (eq ',sym (car ,form))))
(defun strip-declarations (forms)
(loop while (form-beginning-with declare (car forms))
do (pop forms)
finally (return forms)))
(defun plist-to-cmd-args (plist &aux args)
(doplist (k v plist args)
(push (strcat "--" (string-downcase (symbol-name k)) "=" v) args)))
;;;; Version numbers
(defun version< (x y)
(dpkg-version-compare x "<<" y))
(defun version> (x y)
(dpkg-version-compare x ">>" y))
(defun version<= (x y)
(dpkg-version-compare x "<=" y))
(defun version>= (x y)
(dpkg-version-compare x ">=" y))
(defun dpkg-version-compare (x r y)
(zerop (nth-value 2 (run-program `("dpkg" "--compare-versions"
,(etypecase x
(string x)
(number (format nil "~A" x)))
,r
,(etypecase y
(string y)
(number (format nil "~A" y))))
:ignore-error-status t))))
;;;; Encoding of strings to filenames
;; Encoding scheme based on one by Joey Hess -- File.configFileName in
;; propellor. Try to avoid including non-alphanumerics other than '.' and '_'
;; in the filename, such that it both remains roughly human-readable and is
;; likely to be accepted by programs which don't treat filenames as opaque
;; (and interpret them with a charset sufficiently similar to Lisp's).
;; This implementation also assumes that the Lisp doing the decoding has the
;; same charset as the Lisp doing the encoding.
(defun string->filename (s)
(apply #'concatenate 'string
(loop for c
across (etypecase s (string s) (number (write-to-string s)))
if (or (char= c #\.)
(alpha-char-p c)
(digit-char-p c))
collect (format nil "~C" c)
else
collect (format nil "_~X_" (char-code c)))))
(defun filename->string (s)
(loop with decoding
with buffer
with result
for c across s
do (cond
((and (char= c #\_) (not decoding))
(setq decoding t))
((and (char= c #\_) decoding)
(unless buffer (error "invalid encoding"))
(push (code-char
(read-from-string
(coerce (list* #\# #\x (nreverse buffer)) 'string)))
result)
(setq buffer nil
decoding nil))
(decoding
(push c buffer))
(t
(push c result)))
finally (return (coerce (nreverse result) 'string))))
|
