Date-Gen

Randomized date generation supporting CSV output.

Getting Started

Declare your dependencies in a deps.edn file.

{:deps {conjunctive/date-gen {:git/url "https://github.com/conjunctive/date-gen"
                              :sha "f4b642706f571346c2178f323f66a026a9ee79c6"}}}

Start a Clojure REPL.

$ clj

Require this library.

(require '[date-gen.core :as date-gen])

Optionally, require orchestra and instrument the specs. This will improve feedback during development time.

(require '[orchestra.spec.test :as st])
(st/instrument)

Define a collection of date formats.

(def date-formats
  ["yyyyMMdd"
   "MMMM dd, yyyy"
   "mmmm d, yyyy"
   "MM/dd/yyyy h:mm:ss a"
   "MM/dd/yyyy hh:mm:ss a"
   "d-M-yy"])

Generate a map associating a date format to two randomized dates.

(date-gen/format->random-dates 2 date-formats)
;; => {"yyyyMMdd"              ["\"19701112\""
;;                              "\"19930804\""],
;;     "MMMM dd, yyyy"         ["\"November 12, 2002\""
;;                              "\"December 02, 1993\""],
;;     "mmmm d, yyyy"          ["\"0047 16, 1998\""
;;                              "\"0034 2, 1995\""],
;;     "MM/dd/yyyy h:mm:ss a"  ["\"11/17/1973 5:03:47 AM\""
;;                              "\"01/28/1985 9:14:16 PM\""],
;;     "MM/dd/yyyy hh:mm:ss a" ["\"08/29/1993 09:22:30 PM\""
;;                              "\"10/03/1990 02:35:24 PM\""],
;;     "d-M-yy"                ["\"23-6-78\""
;;                              "\"7-6-82\""]}

Generate a sequence of strings, each containing a date format and three randomized dates.

(date-gen/random-dates-by-line 3 date-formats)
;; => ("\"yyyyMMdd\", \"19990904\", \"19710512\", \"19980413\""
;;     "\"MMMM dd, yyyy\", \"November 20, 2010\", \"February 26, 1972\", \"December 30, 1970\""
;;     "\"mmmm d, yyyy\", \"0021 7, 1986\", \"0007 8, 1985\", \"0040 19, 1983\""
;;     "\"MM/dd/yyyy h:mm:ss a\", \"01/12/2002 3:08:44 PM\", \"04/07/1974 2:57:51 PM\", \"06/02/1995 11:48:36 AM\""
;;     "\"MM/dd/yyyy hh:mm:ss a\", \"12/30/2001 02:06:12 PM\", \"08/11/2012 01:10:24 AM\", \"01/21/1993 12:08:35 AM\""
;;     "\"d-M-yy\", \"1-1-00\", \"1-4-14\", \"6-9-92\"")

Generate a CSV file, where each data record contains the date format followed by 1000 randomized dates.

(date-gen/random-dates-csv "test.csv" 1000 date-formats)

License

This project is licensed under the MIT License.