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authorHerman Rimm <herman@rimm.ee>2024-02-20 21:45:11 +0100
committerLudovic Courtès <ludo@gnu.org>2024-02-23 19:01:55 +0100
commitbabd39e84389c544e8dab44be8ddec57e52709c9 (patch)
tree8a99e37bc471abb47f8b864303913d9e3a8e1fc6 /guix
parenta1d0610f830e1bf3573cac42ba4c013ed76accef (diff)
utils: Add insert-expression procedure.
* guix/utils.scm (define-module): Use (guix read-print) and export (insert-expression). (insert-expression): Add procedure. * tests/utils.scm ("insert-expression"): Add test. Change-Id: I971a43a78aa6ecaaef33c1a7a0db4b287eb85036 Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Diffstat (limited to 'guix')
-rw-r--r--guix/utils.scm11
1 files changed, 11 insertions, 0 deletions
diff --git a/guix/utils.scm b/guix/utils.scm
index e4e9d922e7..94b4d753d0 100644
--- a/guix/utils.scm
+++ b/guix/utils.scm
@@ -20,6 +20,7 @@
;;; Copyright © 2023 Janneke Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2023 Zheng Junjie <873216071@qq.com>
;;; Copyright © 2023 Foundation Devices, Inc. <hello@foundationdevices.com>
+;;; Copyright © 2024 Herman Rimm <herman@rimm.ee>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -38,6 +39,7 @@
(define-module (guix utils)
#:use-module (guix config)
+ #:autoload (guix read-print) (object->string*)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
@@ -145,6 +147,7 @@
go-to-location
edit-expression
delete-expression
+ insert-expression
filtered-port
decompressed-port
@@ -502,6 +505,14 @@ the trailing line is included in the edited expression."
"Delete the expression specified by SOURCE-PROPERTIES."
(edit-expression source-properties (const "") #:include-trailing-newline? #t))
+(define (insert-expression source-properties expr)
+ "Insert EXPR before the top-level expression specified by
+SOURCE-PROPERTIES."
+ (let* ((expr (object->string* expr 0))
+ (insert (lambda (str)
+ (string-append expr "\n\n" str))))
+ (edit-expression source-properties insert)))
+
;;;
;;; Keyword arguments.