diff options
Diffstat (limited to 'guix/build/utils.scm')
| -rw-r--r-- | guix/build/utils.scm | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/guix/build/utils.scm b/guix/build/utils.scm index e872cfffd3..afcb71fae3 100644 --- a/guix/build/utils.scm +++ b/guix/build/utils.scm @@ -53,6 +53,7 @@ directory-exists? executable-file? symbolic-link? + call-with-temporary-output-file call-with-ascii-input-file elf-file? ar-file? @@ -198,6 +199,22 @@ introduce the version part." "Return #t if FILE is a symbolic link (aka. \"symlink\".)" (eq? (stat:type (lstat file)) 'symlink)) +(define (call-with-temporary-output-file proc) + "Call PROC with a name of a temporary file and open output port to that +file; close the file and delete it when leaving the dynamic extent of this +call." + (let* ((directory (or (getenv "TMPDIR") "/tmp")) + (template (string-append directory "/guix-file.XXXXXX")) + (out (mkstemp! template))) + (dynamic-wind + (lambda () + #t) + (lambda () + (proc template out)) + (lambda () + (false-if-exception (close out)) + (false-if-exception (delete-file template)))))) + (define (call-with-ascii-input-file file proc) "Open FILE as an ASCII or binary file, and pass the resulting port to PROC. FILE is closed when PROC's dynamic extent is left. Return the |