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07/20: installer: Add new utils.
From: |
guix-commits |
Subject: |
07/20: installer: Add new utils. |
Date: |
Wed, 5 Dec 2018 01:28:54 -0500 (EST) |
mothacehe pushed a commit to branch wip-newt-installer
in repository guix.
commit 87c1d1530a390a0190d33f49e2f9c67fe3dee735
Author: Mathieu Othacehe <address@hidden>
Date: Wed Dec 5 14:24:04 2018 +0900
installer: Add new utils.
* gnu/installer/utils.scm (nearest-exact-integer): New exported procedure,
(read-percentage): ditto,
(run-shell-command): ditto.
---
gnu/installer/utils.scm | 28 +++++++++++++++++++++++++++-
1 file changed, 27 insertions(+), 1 deletion(-)
diff --git a/gnu/installer/utils.scm b/gnu/installer/utils.scm
index 5087683..e91f90a 100644
--- a/gnu/installer/utils.scm
+++ b/gnu/installer/utils.scm
@@ -17,10 +17,16 @@
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu installer utils)
+ #:use-module (guix utils)
+ #:use-module (guix build utils)
#:use-module (ice-9 rdelim)
+ #:use-module (ice-9 regex)
#:use-module (ice-9 textual-ports)
#:export (read-lines
- read-all))
+ read-all
+ nearest-exact-integer
+ read-percentage
+ run-shell-command))
(define* (read-lines #:optional (port (current-input-port)))
"Read lines from PORT and return them as a list."
@@ -35,3 +41,23 @@
"Return the content of the given FILE as a string."
(call-with-input-file file
get-string-all))
+
+(define (nearest-exact-integer x)
+ "Given a real number X, return the nearest exact integer, with ties going to
+the nearest exact even integer."
+ (inexact->exact (round x)))
+
+(define (read-percentage percentage)
+ "Read PERCENTAGE string and return the corresponding percentage as a
+number. If no percentage is found, return #f"
+ (let ((result (string-match "^([0-9]+)%$" percentage)))
+ (and result
+ (string->number (match:substring result 1)))))
+
+(define (run-shell-command command)
+ (call-with-temporary-output-file
+ (lambda (file port)
+ (format port "~a~%" command)
+ ;; (format port "exit~%")
+ (close port)
+ (invoke "bash" "--init-file" file))))
- branch wip-newt-installer updated (177029b -> 4781503), guix-commits, 2018/12/05
- 02/20: services: herd: Allow to pass arguments to start-service., guix-commits, 2018/12/05
- 05/20: build: file-systems: Export read-partition-label and read-partition-uuid., guix-commits, 2018/12/05
- 01/20: build: syscalls: Add device-in-use?., guix-commits, 2018/12/05
- 03/20: gnu: guile-newt: Update to revision 4., guix-commits, 2018/12/05
- 04/20: gnu: Add guile-parted., guix-commits, 2018/12/05
- 06/20: installer: Remove "selection" from all titles., guix-commits, 2018/12/05
- 13/20: installer: Redirect to TTY3 root shell for unguided install., guix-commits, 2018/12/05
- 07/20: installer: Add new utils.,
guix-commits <=
- 14/20: installer: Fix ethernet connection., guix-commits, 2018/12/05
- 11/20: installer: Add hostname., guix-commits, 2018/12/05
- 15/20: installer: Fix comments., guix-commits, 2018/12/05
- 09/20: installer: Do not ask for keyboard model., guix-commits, 2018/12/05
- 16/20: installer: Add user module., guix-commits, 2018/12/05
- 10/20: installer: Add services page., guix-commits, 2018/12/05
- 08/20: installer: Add configuration formatter., guix-commits, 2018/12/05
- 19/20: installer: Reorder local.mk., guix-commits, 2018/12/05
- 12/20: installer: Add new pages., guix-commits, 2018/12/05
- 18/20: installer: Reorder POTFILES.in, guix-commits, 2018/12/05