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| author | Ludovic Courtès <ludo@gnu.org> | 2022-03-11 21:13:31 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2022-03-18 16:03:33 +0100 |
| commit | f5a94b3a9f5b62e79d616e9631a5137f1a100f69 (patch) | |
| tree | 19b2318316cc1ad6fa4bbb4114288a883081bc09 /guix/graph.scm | |
| parent | 625fa3cfe8c57cd5624608d2478c8c6be4c69c3b (diff) | |
| download | guix-f5a94b3a9f5b62e79d616e9631a5137f1a100f69.tar guix-f5a94b3a9f5b62e79d616e9631a5137f1a100f69.tar.gz | |
graph: Factorize 'lookup-backend'.
* guix/graph.scm (lookup-backend): New procedure.
* guix/scripts/graph.scm (lookup-backend): Remove.
* guix/scripts/system.scm (lookup-backend): Remove.
* po/guix/POTFILES.in: Add 'guix/graph.scm'.
Diffstat (limited to 'guix/graph.scm')
| -rw-r--r-- | guix/graph.scm | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/guix/graph.scm b/guix/graph.scm index 3a1cab244b..41219ab67d 100644 --- a/guix/graph.scm +++ b/guix/graph.scm @@ -1,5 +1,5 @@ ;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2015, 2016, 2020, 2021 Ludovic Courtès <ludo@gnu.org> +;;; Copyright © 2015-2016, 2020-2022 Ludovic Courtès <ludo@gnu.org> ;;; Copyright © 2016 Ricardo Wurmus <rekado@elephly.net> ;;; ;;; This file is part of GNU Guix. @@ -22,10 +22,13 @@ #:use-module (guix monads) #:use-module (guix records) #:use-module (guix sets) + #:autoload (guix diagnostics) (formatted-message) + #:autoload (guix i18n) (G_) #:use-module (rnrs io ports) #:use-module (srfi srfi-1) #:use-module (srfi srfi-9) #:use-module (srfi srfi-26) + #:use-module (srfi srfi-34) #:use-module (ice-9 match) #:use-module (ice-9 vlist) #:export (node-type @@ -47,6 +50,8 @@ %graph-backends %d3js-backend %graphviz-backend + lookup-backend + graph-backend? graph-backend graph-backend-name @@ -335,6 +340,13 @@ nodeArray.push(nodes[\"~a\"]);~%" %d3js-backend %cypher-backend)) +(define (lookup-backend name) + "Return the graph backend called NAME. Raise an error if it is not found." + (or (find (lambda (backend) + (string=? (graph-backend-name backend) name)) + %graph-backends) + (raise (formatted-message (G_ "~a: unknown graph backend") name)))) + (define* (export-graph sinks port #:key reverse-edges? node-type (max-depth +inf.0) |