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utils: Change `substitute*' to accept a list of files to patch.

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* guix/build/utils.scm (substitute*): Support a list of files as the
  first argument.
This commit is contained in:
Ludovic Courtès 2012-08-25 13:12:33 +02:00
parent 22b5d9c9a5
commit 8773648e35
1 changed files with 14 additions and 10 deletions
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24
guix/build/utils.scm
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@ -210,10 +210,9 @@ as (PROC MATCH OUTPUT-PORT)."
((let-matches index match () body ...) ((let-matches index match () body ...)
(begin body ...)))) (begin body ...))))
(define-syntax-rule (substitute* file (define-syntax substitute*
((regexp match-var ...) body ...) (syntax-rules ()
...) "Substitute REGEXP in FILE by the string returned by BODY. BODY is
"Substitute REGEXP in FILE by the string returned by BODY. BODY is
evaluated with each MATCH-VAR bound to the corresponding positional regexp evaluated with each MATCH-VAR bound to the corresponding positional regexp
sub-expression. For example: sub-expression. For example:
@ -230,12 +229,17 @@ bound to the last one.
When one of the MATCH-VAR is `_', no variable is bound to the corresponding When one of the MATCH-VAR is `_', no variable is bound to the corresponding
match substring." match substring."
(substitute file ((substitute* (file ...) clause ...)
(list (cons regexp (begin
(lambda (m p) (substitute* file clause ...)
(let-matches 0 m (match-var ...) ...))
(display (begin body ...) p)))) ((substitute* file ((regexp match-var ...) body ...) ...)
...))) (substitute file
(list (cons regexp
(lambda (m p)
(let-matches 0 m (match-var ...)
(display (begin body ...) p))))
...)))))
;;; ;;;