docopts

renamer.nimble

@@ -13,3 +13,5 @@ bin           = @["renamer"]
 
 requires "nim >= 1.4.2"
 requires "zero_functional >= 1.2.1"
+requires "docopt >= 0.6.7"
+

src/renamer.nim

@@ -1,3 +1,19 @@
+let doc = """
+Renamer.
+
+Usage:
+  renamer [<from>] [<to>] [--season=<se>]
+  renamer (-h | --help)
+  renamer [--version]
+
+Options:
+  -h, --help     Show this screen.
+  -v, --version  Show version.
+  --season=<se>  Season of show. [Default is 01]
+"""
+
+
+import docopt
 import lists
 import os
 import re
@@ -85,20 +101,22 @@ proc main() =
   # Initializes season to be blank. Can be overridden with command
   var
     file_list = initDoublyLinkedList[string]()
-    season = ""
+    season = "01"
     fromDir = ""
     toDir = ""
-  # Parses for a season on command line
-  let params = commandLineParams()
-  for i in 0 ..< params.len():
-    if params[i] == "-s" or params[i] == "--season":
-      # Sets format as S00E00 format
-      season = params[i+1]
-    elif params[i] == "-f" or params[i] == "--from":
-      fromDir = params[i+1] & "/"
-    elif params[i] == "-t" or params[i] == "--to":
-      toDir = params[i+1] & "/"
+  let args = docopt(doc, version = "Renamer 0.1")
 
+  if args["<from>"]:
+    fromDir = $args["<from>"] & "/"
+  if args["<to>"]:
+    toDir = $args["<to>"] & "/"
+
+  if args["--season"]:
+    let tmpseason = $args["--season"]
+    # Ensure seasons below 10 start with 0. Example is 03
+    if tmpseason.len() < 2:
+      season = "0" & tmpseason
+    else: season = tmpseason
 
   if not isatty(stdin):
     while true: