Use a web cache on the file system

1 files changed, 20 insertions, 0 deletions

diff --git a/src/scm/webid-oidc/stubs.scm b/src/scm/webid-oidc/stubs.scm
index 4ed9000..ee24724 100644
--- a/src/scm/webid-oidc/stubs.scm
+++ b/src/scm/webid-oidc/stubs.scm
@@ -120,3 +120,23 @@
 (define fixed:scm->json scm->json)
 
 (export (fixed:scm->json . scm->json))
+
+(define (mkdir-p name)
+  (catch 'system-error
+    (lambda ()
+      (mkdir name))
+    (lambda (key subr message args rest)
+      (case (car rest)
+        ((17) ;; file exists
+         #t)
+        ((2) ;; parent does not exist
+         (let ((parent (dirname name)))
+           (unless (equal? parent name)
+             (mkdir-p parent))
+           (mkdir name)))
+        (else
+         (throw key subr message args rest))))))
+
+(define-public (call-with-output-file* filename . args)
+  (mkdir-p (dirname filename))
+  (apply call-with-output-file filename args))