1 files changed, 63 insertions, 0 deletions
diff --git a/split-spec.scm b/split-spec.scm
new file mode 100644
index 0000000..6111b17
--- /dev/null
+++ b/split-spec.scm
@@ -0,0 +1,63 @@
+(use-modules (aws cloudformation utils)
+             (aws cloudformation utils json)
+             (ice-9 match)
+             (srfi srfi-1))
+
+(define spec
+  (call-with-input-file "cloudformation-spec.json" read-json))
+(define spec-version (json-assoc-ref spec "ResourceSpecificationVersion"))
+(define properties-by-service (make-hash-table))
+(define resources-by-service (make-hash-table))
+
+(define (parse-service-name name)
+  (match (delete "" (string-split name #\:))
+    (("Tag") "Universal")
+    ((_ service . _) service)))
+
+(define (add-to-group table type-spec)
+  (match type-spec
+    ((name . details)
+     (let* ((service (parse-service-name name))
+            (existing-stuff (or (hash-ref table service) '())))
+       (hash-set! table
+                  service
+                  (cons type-spec existing-stuff))))))
+
+(for-each (lambda (property)
+            (add-to-group properties-by-service property))
+          (json-assoc-ref spec "PropertyTypes"))
+(for-each (lambda (property)
+            (add-to-group resources-by-service property))
+          (json-assoc-ref spec "ResourceTypes"))
+
+(define (hash-table-keys table)
+  (hash-fold (lambda (k v memo) (cons k memo)) '() table))
+
+(define services
+  (sort (lset-union string=?
+                    (hash-table-keys properties-by-service)
+                    (hash-table-keys resources-by-service))
+        string<))
+
+(for-each (lambda (service)
+            (let* ((module-suffix (symbol->string (aws-string->symbol service)))
+                   (file-name (string-append "aws/cloudformation/"
+                                             module-suffix ".cfn")))
+              (display "create ")
+              (display file-name)
+              (newline)
+              (call-with-output-file file-name
+                (lambda (port)
+                  (let ((properties (or (hash-ref properties-by-service service)
+                                        '()))
+                        (resources (or (hash-ref resources-by-service service)
+                                       '())))
+                    (write `(("ModuleSuffix" . ,module-suffix)
+                             ,@(if (string=? service "Universal")
+                                   `(("ResourceSpecificationVersion" .
+                                      ,spec-version))
+                                   '())
+                             ("PropertyTypes" . ,properties)
+                             ("ResourceTypes" . ,resources))
+                           port))))))
+          services)