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authorAndrew Whatson <whatson@gmail.com>2021-05-28 00:18:27 +1000
committerLudovic Courtès <ludo@gnu.org>2021-05-28 11:36:02 +0200
commitebbfee880c1def28b77aeb2eee640998b9fa7d5f (patch)
treefdfb912c6f8e49135f5db8c5f74d12338a9b2140
parent50d5bb1f3e3f080212436db1b8666d061a8ae1d2 (diff)
downloadguix-ebbfee880c1def28b77aeb2eee640998b9fa7d5f.tar.gz
guix-ebbfee880c1def28b77aeb2eee640998b9fa7d5f.zip
git-download: Support submodules in 'git-predicate'.
* guix/git-download.scm (git-file-list): Add prefix and recursive? arguments. Recurse into submodules when requested. (git-predicate): Add recursive? argument. Signed-off-by: Ludovic Courtès <ludo@gnu.org>
-rw-r--r--guix/git-download.scm67
1 files changed, 53 insertions, 14 deletions
diff --git a/guix/git-download.scm b/guix/git-download.scm
index 72084a2249..5e624b9ae9 100644
--- a/guix/git-download.scm
+++ b/guix/git-download.scm
@@ -33,6 +33,9 @@
repository-discover
repository-head
repository-working-directory)
+ #:autoload (git submodule) (repository-submodules
+ submodule-lookup
+ submodule-path)
#:autoload (git commit) (commit-lookup commit-tree)
#:autoload (git reference) (reference-target)
#:autoload (git tree) (tree-list)
@@ -194,11 +197,17 @@ HASH-ALGO (a symbol). Use NAME as the file name, or a generic name if #f."
;;; 'git-predicate'.
;;;
-(define (git-file-list directory)
+(define* (git-file-list directory #:optional prefix #:key (recursive? #t))
"Return the list of files checked in in the Git repository at DIRECTORY.
The result is similar to that of the 'git ls-files' command, except that it
-also includes directories, not just regular files. The returned file names
-are relative to DIRECTORY, which is not necessarily the root of the checkout."
+also includes directories, not just regular files.
+
+When RECURSIVE? is true, also list files in submodules, similar to the 'git
+ls-files --recurse-submodules' command. This is enabled by default.
+
+The returned file names are relative to DIRECTORY, which is not necessarily
+the root of the checkout. If a PREFIX is provided, it is prepended to each
+file name."
(let* (;; 'repository-working-directory' always returns a trailing "/",
;; so add one here to ease the comparisons below.
(directory (string-append (canonicalize-path directory) "/"))
@@ -209,27 +218,57 @@ are relative to DIRECTORY, which is not necessarily the root of the checkout."
(oid (reference-target head))
(commit (commit-lookup repository oid))
(tree (commit-tree commit))
- (files (tree-list tree)))
+ (files (tree-list tree))
+ (submodules (if recursive?
+ (map (lambda (name)
+ (submodule-path
+ (submodule-lookup repository name)))
+ (repository-submodules repository))
+ '()))
+ (relative (and (not (string=? workdir directory))
+ (string-drop directory (string-length workdir))))
+ (included? (lambda (path)
+ (or (not relative)
+ (string-prefix? relative path))))
+ (make-relative (lambda (path)
+ (if relative
+ (string-drop path (string-length relative))
+ path)))
+ (add-prefix (lambda (path)
+ (if prefix
+ (string-append prefix "/" path)
+ path)))
+ (rectify (compose add-prefix make-relative)))
(repository-close! repository)
- (if (string=? workdir directory)
- files
- (let ((relative (string-drop directory (string-length workdir))))
- (filter-map (lambda (file)
- (and (string-prefix? relative file)
- (string-drop file (string-length relative))))
- files)))))
-
-(define (git-predicate directory)
+ (append
+ (if (or relative prefix)
+ (filter-map (lambda (file)
+ (and (included? file)
+ (rectify file)))
+ files)
+ files)
+ (append-map (lambda (submodule)
+ (if (included? submodule)
+ (git-file-list
+ (string-append workdir submodule)
+ (rectify submodule))
+ '()))
+ submodules))))
+
+(define* (git-predicate directory #:key (recursive? #t))
"Return a predicate that returns true if a file is part of the Git checkout
living at DIRECTORY. If DIRECTORY does not lie within a Git checkout, and
upon Git errors, return #f instead of a predicate.
+When RECURSIVE? is true, the predicate also returns true if a file is part of
+any Git submodule under DIRECTORY. This is enabled by default.
+
The returned predicate takes two arguments FILE and STAT where FILE is an
absolute file name and STAT is the result of 'lstat'."
(libgit2-init!)
(catch 'git-error
(lambda ()
- (let* ((files (git-file-list directory))
+ (let* ((files (git-file-list directory #:recursive? recursive?))
(inodes (fold (lambda (file result)
(let* ((file (string-append directory "/" file))
(stat (false-if-exception (lstat file))))