Add Ormin ORM support for BaraDB (Nim client)

clients/nim/ormin/tools/ormin_importer.nim

@@ -0,0 +1,38 @@
+## Ormin -- ORM for Nim.
+## (c) 2017 Andreas Rumpf
+## MIT License.
+
+import strutils, os, parseopt
+
+import ../ormin/importer_core
+
+proc writeHelp() =
+  echo """
+ormin <schema.sql> --out:<file.nim>  --db:postgre|sqlite|mysql
+"""
+
+proc writeVersion() = echo "v1.0"
+
+var p = initOptParser()
+var infile = ""
+var outfile = ""
+var target: ImportTarget
+for kind, key, val in p.getopt():
+  case kind
+  of cmdArgument:
+    infile = key
+  of cmdLongOption, cmdShortOption:
+    case key
+    of "help", "h": writeHelp()
+    of "version", "v": writeVersion()
+    of "out", "o": outfile = val
+    of "db": target = parseEnum[ImportTarget](val)
+    else: discard
+  of cmdEnd: assert(false) # cannot happen
+if infile == "":
+  # no filename has been given, so we show the help:
+  writeHelp()
+else:
+  if outfile == "":
+    outfile = changeFileExt(infile, "nim")
+  writeFile(outfile, generateModelCode(readFile(infile), absolutePath(infile), target))