Iniital scaffolding commit.

FossilOrigin-Name: 879068412740cd5f7da23bf35a547ba7a7182370b5e9b555f22c30c007d3ebc5

sieb.nim

@@ -0,0 +1,59 @@
+# vim: set et nosta sw=4 ts=4 :
+#
+# Copyright (c) 2023, Mahlon E. Smith <mahlon@martini.nu>
+# All rights reserved.
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in the
+#       documentation and/or other materials provided with the distribution.
+#
+#     * Neither the name of Mahlon E. Smith nor the names of his
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
+# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
+# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+import
+    std/streams,
+    yaml/serialization
+
+const
+    VERSION = "v0.1.0"
+
+type
+    rule = object
+        headers: seq[ tuple[ header: string, regexp: string ] ]
+        deliver {.defaultVal: "Maildir"}: string
+        filter {.defaultVal: ""}: string
+
+    # Typed configuration file layout for YAML loading.
+    Config = object
+        logfile {.defaultVal: "".}: string
+        pre_filter {.defaultVal: @[]}: seq[string]
+        post_filter {.defaultVal: @[]}: seq[string]
+        rules {.defaultVal: @[]}: seq[rule]
+
+
+var conf: Config
+
+let s = newFileStream( "config.yml" )
+load( s, conf )
+s.close
+
+echo conf
+