[functional-tests] run-functional-tests now takes a filter command line

functional-tests/run-functional-tests.scm

@@ -1,12 +1,50 @@
-(import (chezscheme)
+(import (rnrs)
+        (fmt fmt)
         (functional-tests)
         (cache-functional-tests)
+        (only (srfi s1 lists) break)
+        (srfi s8 receive)
         (thin-functional-tests))
 
+;;------------------------------------------------
+
+(define (begins-with prefix xs)
+  (cond
+    ((null? prefix) #t)
+    ((null? xs) #f)
+    ((eq? (car prefix) (car xs))
+     (begins-with (cdr prefix) (cdr xs)))
+    (else #f)))
+
+(define (split-list xs sep)
+  (define (safe-cdr xs)
+    (if (null? xs) '() (cdr xs)))
+
+  (if (null? xs)
+      '()
+      (receive (p r) (break (lambda (c)
+                          (eq? c sep))
+                        xs)
+           (cons p (split-list (safe-cdr r) sep)))))
+
+(define (string->syms str sep)
+  (map (lambda (cs)
+         (string->symbol
+           (list->string cs)))
+       (split-list (string->list str) sep)))
+
+(define (mk-filter pattern)
+  (let ((prefix (string->syms pattern #\/)))
+   (lambda (keys)
+    (begins-with prefix keys))))
+
+;;------------------------------------------------
+
 (register-thin-tests)
 (register-cache-tests)
 
-(if (run-scenarios (list-scenarios))
+(if (run-scenarios (filter (mk-filter (car (cdr (command-line))))
+                           (list-scenarios)))
     (exit)
     (exit #f))