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Use spec, expound for option validation
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,40 +1,68 @@ | ||
| (ns clojurl | ||
| (:require [clj-http.lite.client :as http] | ||
| [clojure.spec.alpha :as s] | ||
| [clojure.string :as cs] | ||
| [clojure.tools.cli :as cli] | ||
| [clojure.pprint :refer [pprint]] | ||
| [expound.alpha :as expound] | ||
| [hickory.core :as hick]) | ||
| (:gen-class)) | ||
|
|
||
| (set! *warn-on-reflection* true) | ||
|
|
||
| (def cli-options | ||
| [["-u" "--uri URI" "URI of request" | ||
| :id :url | ||
| :validate [(comp not cs/blank?) "Must be a non-empty string"]] | ||
| ["-H" "--header HEADER" "Request header(s)" | ||
| :parse-fn #(cs/split % #"=") | ||
| :id :headers, :default {}, :assoc-fn (fn [m k [l r]] (update m k assoc l r)) | ||
| :default-desc ""] | ||
| ["-d" "--data DATA" "Request data"] | ||
| ["-d" "--data DATA" "Request data" | ||
| :id :body] | ||
| ["-m" "--method METHOD" "Request method e.g. GET, POST, etc." | ||
| :default :get, :parse-fn (comp keyword cs/lower-case) | ||
| :default-desc "GET"] | ||
| ["-o" "--output FORMAT" "Output format e.g. edn, hickory" | ||
| :id :output | ||
| :id :output-fn | ||
| :parse-fn {"edn" pprint | ||
| "hickory" (comp prn hick/as-hickory hick/parse :body)} | ||
| :default pprint :default-desc "edn"] | ||
| ["-h" "--help" :id :help?]]) | ||
| ["-v" "--verbose" "Print verbose info" :id :verbose?] | ||
| ["-h" "--help" "Print this message" :id :help?]]) | ||
|
|
||
| (s/def ::non-empty-string (s/and string? (comp not cs/blank?))) | ||
| (s/def ::url ::non-empty-string) | ||
| (s/def ::output-fn ifn?) | ||
| (s/def ::method keyword?) | ||
| (s/def ::headers (s/coll-of (s/tuple ::non-empty-string ::non-empty-string))) | ||
| (s/def ::body string?) | ||
| (s/def ::options | ||
| (s/keys :req-un [::url ::output-fn] | ||
| :opt-un [::method ::headers ::body])) | ||
|
|
||
| (defn -main [& args] | ||
| ;; for sunec native lib loading at native-image runtime | ||
| (System/setProperty "java.library.path" | ||
| (str (System/getenv "GRAALVM_HOME") "/jre/lib")) | ||
| (let [{:keys [options summary]} (cli/parse-opts args cli-options) | ||
| {:keys [help? uri method headers data output]} options] | ||
| (when help? (println summary)) | ||
| (when uri | ||
| (output (http/request {:url uri | ||
| :method (keyword method) | ||
| :headers headers | ||
| :body data}))))) | ||
| (let [{{:keys [help? verbose? output-fn] :as opts} :options, help :summary} | ||
| (cli/parse-opts args cli-options)] | ||
| (cond | ||
| help? | ||
| (println help) | ||
|
|
||
| (s/valid? ::options opts) | ||
| (-> opts | ||
| (select-keys [:url :headers :method :body]) | ||
| (http/request) | ||
| (output-fn)) | ||
|
|
||
| :else | ||
| (do (println "Invalid option(s)") | ||
| (if verbose? | ||
| (expound/expound ::options opts) | ||
| (println "Use --verbose for more detail")) | ||
| (println "Usage:") | ||
| (println help) | ||
| (flush) | ||
| (System/exit 1))))) |