Implemented recipes for sqlite-utils convert, refs #251

sqlite_utils/recipes.py

@@ -0,0 +1,19 @@
+from dateutil import parser
+import json
+
+
+def parsedate(value, dayfirst=False, yearfirst=False):
+    "Parse a date and convert it to ISO date format: yyyy-mm-dd"
+    return (
+        parser.parse(value, dayfirst=dayfirst, yearfirst=yearfirst).date().isoformat()
+    )
+
+
+def parsedatetime(value, dayfirst=False, yearfirst=False):
+    "Parse a datetime and convert it to ISO datetime format: yyyy-mm-ddTHH:MM:SS"
+    return parser.parse(value, dayfirst=dayfirst, yearfirst=yearfirst).isoformat()
+
+
+def jsonsplit(value, delimiter=",", type=str):
+    'Convert a string like a,b,c into a JSON array ["a", "b", "c"]'
+    return json.dumps([type(s.strip()) for s in value.split(delimiter)])