Update cli

Author: chbrandt

README.md

@@ -1,2 +1,26 @@
-# package_validator
-PLANMAP packages validation framework
+# PLANMAP package validator
+
+This tool validates the structure and content of a Planmap package.
+
+The validator gets as input the path to a (PM) package and then
+run a series of checks following a package/data model.
+
+## To run the validator
+
+Since I'm trying different methods to have this validator steps running together, there are different ways to run _a_ validator.
+
+* Pytest:
+
+    ```bash
+    $ pytest --pkgpath 'path/to/geopackage.gpkg'
+    ```
+    
+* Custom (python pipeline):
+
+    ```bash
+    $ python validate.py <path>
+    ```
+
+## Where are the models
+
+## How to modify the models

validate.py

@@ -1,12 +1,16 @@
-import gpt
+import os
 import check
 
 if __name__ == '__main__':
-    import sys
+    import argparse
+    parser = argparse.ArgumentParser(description="Validate Geopackages")
 
-    if len(sys.argv) < 2:
-        print("\nUsage: {} <path/to/geopackage>".format(sys.argv[0]))
-        sys.exit(1)
+    parser.add_argument('gpkg', type=str,
+                        help="File/path to Geopackage")
+
+    args = parser.parse_args()
+
+    filename = args.gpkg
+    assert os.path.isfile(filename), f"Filename '{filename}' does not exist"
 
-    filename = sys.argv[1]
     check.geopackage(filename)