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discovery: Add 'scheme-modules*'.

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* guix/self.scm (scheme-modules*): Move to...
* guix/discovery.scm (scheme-modules*): ... here.  New procedure.  Make
'sub-directory' an optional parameter.
This commit is contained in:
Ludovic Courtès 2018-08-24 15:51:31 +02:00
parent 20cbd4f5f4
commit 02fa1d251c
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2 changed files with 12 additions and 8 deletions
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13
guix/discovery.scm
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@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@ -27,6 +27,7 @@
#:use-module (ice-9 ftw)
#:export (scheme-files
scheme-modules
scheme-modules*
fold-modules
all-modules
fold-module-public-variables))
@ -115,6 +116,16 @@ name and the exception key and arguments."
(string-append directory "/" sub-directory)
directory))))
(define* (scheme-modules* directory #:optional sub-directory)
"Return the list of module names found under SUB-DIRECTORY in DIRECTORY.
This is a source-only variant that does not try to load files."
(let ((prefix (string-length directory)))
(map (lambda (file)
(file-name->module-name (string-drop file prefix)))
(scheme-files (if sub-directory
(string-append directory "/" sub-directory)
directory)))))
(define* (fold-modules proc init path #:key (warn (const #f)))
"Fold over all the Scheme modules present in PATH, a list of directories.
Call (PROC MODULE RESULT) for each module that is found."

7
guix/self.scm
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@ -206,13 +206,6 @@ list of file-name/file-like objects suitable as inputs to 'imported-files'."
(local-file file #:recursive? #t)))
(find-files (string-append directory "/" sub-directory) pred)))
(define (scheme-modules* directory sub-directory)
"Return the list of module names found under SUB-DIRECTORY in DIRECTORY."
(let ((prefix (string-length directory)))
(map (lambda (file)
(file-name->module-name (string-drop file prefix)))
(scheme-files (string-append directory "/" sub-directory)))))
(define* (sub-directory item sub-directory)
"Return SUB-DIRECTORY within ITEM, which may be a file name or a file-like
object."