Add config

cmd/pypihub/main.go

@@ -1,7 +1,13 @@
 package main
 
-import "fmt"
+import (
+	"fmt"
+
+	"github.com/brettlangdon/pypihub"
+)
 
 func main() {
-	fmt.Println("PyPIHub")
+	var config pypihub.Config
+	config = pypihub.ParseConfig()
+	fmt.Printf("%#v\r\n", config)
 }

config.go

@@ -0,0 +1,35 @@
+package pypihub
+
+import (
+	"os"
+	"strings"
+
+	arg "github.com/alexflint/go-arg"
+)
+
+type Config struct {
+	Username    string   `arg:"-u,--username,env:PYPIHUB_USERNAME,required,help:Username of GitHub user to login as (env: PYPIHUB_USERNAME)"`
+	AccessToken string   `arg:"-a,--access-token,env:PYPIHUB_ACCESS_TOKEN,required,help:GitHub personal access token to use for authenticating (env: PYPIHUB_ACCESS_TOKEN)"`
+	RepoNames   []string `arg:"positional,help:list of '<username>/<repo>' repos to proxy for (env: PYPIHUB_REPOS)"`
+	Bind        string   `arg:"-b,--bind,env:PYPIHUB_BIND,help:[<address>]:<port> to bind the server to (default: ':8287') (env: PYPIHUB_BIND)"`
+}
+
+func ParseConfig() Config {
+	var config = Config{
+		Bind:      ":8287",
+		RepoNames: make([]string, 0),
+	}
+
+	arg.MustParse(&config)
+
+	if val, ok := os.LookupEnv("PYPIHUB_REPOS"); ok {
+		config.RepoNames = append(config.RepoNames, strings.Split(val, " ")...)
+	}
+	for i := range config.RepoNames {
+		config.RepoNames[i] = strings.Trim(config.RepoNames[i], " ")
+	}
+
+	config.RepoNames = uniqueSlice(config.RepoNames)
+
+	return config
+}

utils.go

@@ -0,0 +1,14 @@
+package pypihub
+
+func uniqueSlice(s []string) []string {
+	var m = make(map[string]bool)
+	for _, v := range s {
+		m[v] = true
+	}
+
+	var o = make([]string, 0)
+	for v := range m {
+		o = append(o, v)
+	}
+	return o
+}