Extend and document benchmark main.

1 files changed, 26 insertions, 4 deletions

diff --git a/module/entry-points/benchmark.scm b/module/entry-points/benchmark.scm
index 701d786b..0ff5556d 100644
--- a/module/entry-points/benchmark.scm
+++ b/module/entry-points/benchmark.scm
@@ -2,16 +2,38 @@
   :export (main)
 
   :use-module (ice-9 getopt-long)
+  :use-module (util options)
   :use-module (util)
   :use-module (util app)
   )
 
 
 (define opt-spec
-  '())
+  `((field (value #t)
+           (description
+            (*TOP*
+             "Which field from the current app to force. Most heavy fields are defined in "
+             (i "(vcomponent)") ".")))
+    (enable-output (single-char #\o)
+                   (description
+                    (*TOP*
+                     "Output is be default supressed, since many fields contain way to much data "
+                     "to read. This turns it on again.")))
+    (help (single-char #\h) (description "Print this help."))))
+
 
 (define (main args)
-  (define opts (getopt-long args opt-spec))
+  (define opts (getopt-long args (getopt-opt opt-spec)))
+
+  (define field (and=> (option-ref opts 'field #f) string->symbol))
+
+  (when (option-ref opts 'help #f)
+    (print-arg-help opt-spec)
+    (throw 'return))
+
+  (unless field
+   (throw 'argument-error "Field `field' required."))
 
-  (write (getf 'calendars app: (current-app)))
-)
+  (aif (option-ref opts 'enable-output #f)
+       (write (getf field app: (current-app)))
+       (getf field app: (current-app))))