diff options
| author | Maxim Cournoyer <maxim.cournoyer@gmail.com> | 2019-09-25 22:43:41 +0900 |
|---|---|---|
| committer | Maxim Cournoyer <maxim.cournoyer@gmail.com> | 2020-05-20 08:30:34 -0400 |
| commit | fa35fb58c84d1c1741e4e63c0b37074e35ed2a61 (patch) | |
| tree | 284c62546914c65213196ef31d03c890901b95b0 /gnu | |
| parent | 281d80d8e547fe663aaacb3226119166dd3100f9 (diff) | |
| download | guix-fa35fb58c84d1c1741e4e63c0b37074e35ed2a61.tar.gz | |
file-systems: Add helpers for parsing the options string into an alist.
* gnu/system/file-systems.scm (file-system-options->alist) (alist->file-system-options): New procedures. * tests/file-systems.scm: New tests. * doc/guix.texi (File Systems): Add note about the newly added procedures.
Diffstat (limited to 'gnu')
| -rw-r--r-- | gnu/system/file-systems.scm | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/gnu/system/file-systems.scm b/gnu/system/file-systems.scm index b41f66e943..07f272db7c 100644 --- a/gnu/system/file-systems.scm +++ b/gnu/system/file-systems.scm @@ -1,6 +1,7 @@ ;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org> ;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net> +;;; Copyright © 2020 Maxim Cournoyer <maxim.cournoyer@gmail.com> ;;; ;;; This file is part of GNU Guix. ;;; @@ -38,6 +39,9 @@ file-system-needed-for-boot? file-system-flags file-system-options + file-system-options->alist + alist->file-system-options + file-system-mount? file-system-check? file-system-create-mount-point? @@ -251,6 +255,33 @@ UUID-TYPE, a symbol such as 'dce or 'iso9660." ((? string?) device))) +(define (file-system-options->alist string) + "Translate the option string format of a <file-system> record into an +association list of options or option/value pairs." + (if string + (let ((options (string-split string #\,))) + (map (lambda (param) + (let ((=index (string-index param #\=))) + (if =index + (cons (string-take param =index) + (string-drop param (1+ =index))) + param))) + options)) + '())) + +(define (alist->file-system-options options) + "Return the string representation of OPTIONS, an association list. The +string obtained can be used as the option field of a <file-system> record." + (if (null? options) + #f + (string-join (map (match-lambda + ((key . value) + (string-append key "=" value)) + (key + key)) + options) + ","))) + (define (file-system-needed-for-boot? fs) "Return true if FS has the 'needed-for-boot?' flag set, or if it holds the store--e.g., if FS is the root file system." |