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guix: build: Expand `copy-recursively'.

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* guix/build/utils.scm (copy-recursively): Add `select?' key.

Change-Id: Icfe226164bb88dfede58ae24c15a98db9b696c3b
Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>
This commit is contained in:
Romain GARBAGE 2024-01-12 16:24:04 +01:00 committed by Ludovic Courtès
parent 92f66ab60d
commit af15de3d6a
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GPG key ID: 090B11993D9AEBB5
1 changed files with 24 additions and 18 deletions
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guix/build/utils.scm
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@ -432,32 +432,38 @@ (define* (copy-recursively source destination
(log (current-output-port))
(follow-symlinks? #f)
(copy-file copy-file)
keep-mtime? keep-permissions?)
"Copy SOURCE directory to DESTINATION. Follow symlinks if FOLLOW-SYMLINKS?
is true; otherwise, just preserve them. Call COPY-FILE to copy regular files.
When KEEP-MTIME? is true, keep the modification time of the files in SOURCE on
those of DESTINATION. When KEEP-PERMISSIONS? is true, preserve file
permissions. Write verbose output to the LOG port."
keep-mtime? keep-permissions?
(select? (const #t)))
"Copy SOURCE directory to DESTINATION. Follow symlinks if FOLLOW-SYMLINKS? is
true; otherwise, just preserve them. Call COPY-FILE to copy regular files. When
KEEP-MTIME? is true, keep the modification time of the files in SOURCE on those of
DESTINATION. When KEEP-PERMISSIONS? is true, preserve file permissions. Write
verbose output to the LOG port. Call (SELECT? FILE STAT) for each entry in source,
where FILE is the entry's absolute file name and STAT is the result of 'lstat' (or
'stat' if FOLLOW-SYMLINKS? is true); exclude entries for which SELECT? does not
return true."
(define strip-source
(let ((len (string-length source)))
(lambda (file)
(substring file len))))
(file-system-fold (const #t) ; enter?
(file-system-fold (lambda (file stat result) ; enter?
(select? file stat))
(lambda (file stat result) ; leaf
(let ((dest (string-append destination
(strip-source file))))
(format log "`~a' -> `~a'~%" file dest)
(case (stat:type stat)
((symlink)
(let ((target (readlink file)))
(symlink target dest)))
(else
(copy-file file dest)
(when keep-permissions?
(chmod dest (stat:perms stat)))))
(when keep-mtime?
(set-file-time dest stat))))
(when (select? file stat)
(format log "`~a' -> `~a'~%" file dest)
(case (stat:type stat)
((symlink)
(let ((target (readlink file)))
(symlink target dest)))
(else
(copy-file file dest)
(when keep-permissions?
(chmod dest (stat:perms stat)))))
(when keep-mtime?
(set-file-time dest stat)))))
(lambda (dir stat result) ; down
(let ((target (string-append destination
(strip-source dir))))