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(zilch vfs): add vfs-append-file

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puck 2025-04-29 15:04:43 +00:00
parent 80883d3206
commit 8eb1934d03
1 changed files with 10 additions and 2 deletions
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12
core/src/vfs.sld
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@ -13,7 +13,7 @@
vfs-dir-filter vfs-dir-filter-all
vfs-subdir
vfs-from-directory vfs-from-store
vfs-to-store)
vfs-to-store vfs-append-file)
(begin
(define (read-full-file port)
@ -132,4 +132,12 @@
store-path
(let ((osdir (store-path-realised store-path)))
; TODO(puck): use builtin:fetchurl here instead of reimporting (requires divining a hash first)
(vfs-from-directory osdir))))))
(vfs-from-directory osdir))))
;; Returns a new VFS, with one file added.
(define (vfs-append-file vfs path contents)
(define split (string-contains-right path "/"))
(define dirname (if split (string-copy path 0 split) ""))
(define filename (if split (string-copy path (+ 1 split)) path))
(make-vfs (mapping-set (vfs-contents vfs) (cons dirname filename) contents)))))