Add option to get cli version

project.clj

@@ -1,4 +1,4 @@
-(defproject atoss-cli "0.2.1-SNAPSHOT"
+(defproject atoss-cli "0.2.2-SNAPSHOT"
   :description "A CLI tool for interacting with ATOSS time sheets"
   :url "https://github.com/platogo/atoss-cli"
   :license {:name "EPL-2.0 OR GPL-2.0-or-later WITH Classpath-exception-2.0"

src/atoss_cli/cli.clj

@@ -1,7 +1,9 @@
 (ns atoss-cli.cli
-  (:require [atoss-cli.atoss :refer [valid-day-codes]])
+  (:require
+   [clojure.java.io :as io]
+   [atoss-cli.atoss :refer [valid-day-codes]])
   (:import (java.text SimpleDateFormat)
-           (java.util Date)))
+           (java.util Date Properties)))
 
 (def today-date (.format
                  (SimpleDateFormat. "dd.MM.yyyy")
@@ -18,6 +20,13 @@ Work seamlessly with ATOSS time sheets.")
   log:       Log time pair for today or a specific date
   view:      View month overview of logged time")
 
+(defn read-project-version []
+  (-> (doto (Properties.)
+        (.load (-> "META-INF/maven/atoss-cli/atoss-cli/pom.properties"
+                   (io/resource)
+                   (io/reader))))
+      (.get "version")))
+
 (def options
   ;; An option with a required argument
   [["-d" "--date DATE" "Date in the format DD.MM.YYYY"
@@ -34,6 +43,8 @@ Work seamlessly with ATOSS time sheets.")
     :id :verbosity
     :default 0
     :update-fn inc]
+   [nil "--version" "Print CLI version"
+    :default false]
    ;; A boolean option defaulting to nil
    ["-h" "--help" "Show this help printout."
     :default false]])
@@ -46,3 +57,6 @@ Work seamlessly with ATOSS time sheets.")
   (newline)
   (newline)
   (print args-summary))
+
+(defn print-project-ver []
+  (println (format "Version: %s" (read-project-version))))

src/atoss_cli/core.clj

@@ -1,8 +1,9 @@
 (ns atoss-cli.core
   "Entrypoint module for the ATOSS CLI."
-  (:require [clojure.tools.cli :refer [parse-opts]]
-            [atoss-cli.atoss :as atoss]
-            [atoss-cli.cli :as cli])
+  (:require
+   [clojure.tools.cli :refer [parse-opts]]
+   [atoss-cli.atoss :as atoss]
+   [atoss-cli.cli :as cli])
   (:import (java.util Collection))
   (:gen-class))
 
@@ -43,6 +44,7 @@
          options :options,
          :as opts} (parse-opts args cli/options)]
     (cond
+      (options :version) (cli/print-project-ver)
       (options :help) (cli/print-help summary)
       (= (first arguments) "view") (show-month-overview)
       (= (first arguments) "log") (log-time opts)