From 80d15411b74f3eca6969d7276152500dd8ece463 Mon Sep 17 00:00:00 2001
From: Arun Isaac
Date: Fri, 7 May 2021 16:45:59 +0530
Subject: Define with-file and with-data-file sc macros.

* src/macros/macros.sc (with-file, with-data-file): New macros.
---
 src/macros/macros.sc | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/macros/macros.sc b/src/macros/macros.sc
index 8ff799b..1ccfeab 100644
--- a/src/macros/macros.sc
+++ b/src/macros/macros.sc
@@ -67,3 +67,19 @@
     body ...
     (for-i i n
       (gsl-rstat-free (array-get var i)))))
+
+(sc-define-syntax (with-file fp filename mode body ...)
+  (with-alloc fp FILE* (begin (fopen filename mode)
+                              (unless fp
+                                (perror filename)
+                                (exit EXIT_FAILURE)))
+              fclose
+              body ...))
+
+(sc-define-syntax* (with-data-file fp filename mode body ...)
+  (let* ((data-file (string-append "data/" filename)))
+    `(with-file fp ,data-file ,mode
+       ,@(if (string=? mode "w")
+             `((fprintf stderr "Writing to %s...\n" ,data-file))
+             '())
+       ,@body)))
-- 
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