Add command-line option parsing support and custom config file location

Makefile

@@ -7,7 +7,7 @@ COMMIT=$(shell git rev-parse --short HEAD)
 all: dev
 
 dev: build
-	@./tube
+	@./tube -v
 
 build: clean
 		@go build \

go.mod

@@ -7,6 +7,8 @@ require (
 	github.com/fsnotify/fsnotify v1.4.7
 	github.com/gorilla/feeds v1.1.1
 	github.com/gorilla/mux v1.7.2
+	github.com/sirupsen/logrus v1.4.2
+	github.com/spf13/pflag v1.0.5
 	github.com/wybiral/feeds v1.1.1
 	github.com/wybiral/torgo v0.0.0-20190413024533-a19a6c8a5048
 	golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4

go.sum

@@ -1,3 +1,4 @@
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dhowden/tag v0.0.0-20190519100835-db0c67e351b1 h1:HR8W6GvuS20j4kNxa/XQeyVA0vHLKVMCAVJj0RGWauY=
 github.com/dhowden/tag v0.0.0-20190519100835-db0c67e351b1/go.mod h1:SniNVYuaD1jmdEEvi+7ywb1QFR7agjeTdGKyFb0p7Rw=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
@@ -5,6 +6,14 @@ github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMo
 github.com/gorilla/feeds v1.1.1/go.mod h1:Nk0jZrvPFZX1OBe5NPiddPw7CfwF6Q9eqzaBbaightA=
 github.com/gorilla/mux v1.7.2 h1:zoNxOV7WjqXptQOVngLmcSQgXmgk4NMz1HibBchjl/I=
 github.com/gorilla/mux v1.7.2/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
+github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/sirupsen/logrus v1.4.2 h1:SPIRibHv4MatM3XXNO2BJeFLZwZ2LvZgfQ5+UNI2im4=
+github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
+github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
+github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/wybiral/feeds v1.1.1 h1:KWE/JxA2XfP0My+C0wymqXrWK5oIyjRVbH5kpclsea0=
 github.com/wybiral/feeds v1.1.1/go.mod h1:MRSqtY+Oy5HMM51cF212xqU39MYbsYq/AH+PY8IfeM0=
 github.com/wybiral/torgo v0.0.0-20190413024533-a19a6c8a5048 h1:HQmSLHtGgSARs7VYzAID703qM/5m1il3X7f9AHfg/9c=
@@ -17,6 +26,7 @@ golang.org/x/net v0.0.0-20190628185345-da137c7871d7 h1:rTIdg5QFRR7XCaK4LCjBiPbx8
 golang.org/x/net v0.0.0-20190628185345-da137c7871d7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb h1:fgwFCsaw9buMuxNd6+DQfAuSFqbNiQZpcgJQAgJsK6k=
 golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

main.go

@@ -2,15 +2,46 @@ package main
 
 import (
 	"fmt"
-	"log"
 	"os"
 
+	log "github.com/sirupsen/logrus"
+	flag "github.com/spf13/pflag"
 	"github.com/wybiral/tube/pkg/app"
 )
 
+var (
+	debug   bool
+	version bool
+	config  string
+)
+
+func init() {
+	flag.Usage = func() {
+		fmt.Fprintf(os.Stderr, "Usage: %s [options] [file]\n", os.Args[0])
+		flag.PrintDefaults()
+	}
+
+	flag.BoolVarP(&version, "version", "v", false, "display version information")
+	flag.BoolVarP(&debug, "debug", "d", false, "enable debug logging")
+	flag.StringVarP(&config, "config", "c", "config.json", "path to configuration file")
+}
+
 func main() {
+	flag.Parse()
+
+	if debug {
+		log.SetLevel(log.DebugLevel)
+	} else {
+		log.SetLevel(log.InfoLevel)
+	}
+
+	if version {
+		fmt.Printf("ed version %s", FullVersion())
+		os.Exit(0)
+	}
+
 	cfg := app.DefaultConfig()
-	err := cfg.ReadFile("config.json")
+	err := cfg.ReadFile(config)
 	if err != nil && !os.IsNotExist(err) {
 		log.Fatal(err)
 	}