break up main.go into sibling files

.travis.yml

@@ -5,7 +5,7 @@ go:
   - tip
 
 before_install:
-  - go get -u -v github.com/spf13/pflag github.com/spf13/viper github.com/ahmetb/govvv github.com/golang/lint/golint
+  - go get -u -v github.com/ahmetb/govvv github.com/golang/lint/golint
 
 script:
   - govvv build

init.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/pflag"
+	"github.com/spf13/viper"
+)
+
+// GitCommit holds the git commit message on compile time
+var GitCommit string
+
+// GitBranch holds the active git branch on compile time
+var GitBranch string
+
+// GitState holds the dirty-state on compile time
+var GitState string
+
+// BuildDate date of compile
+var BuildDate string
+
+// Version version string as contained in VERSION
+var Version string
+
+// init parses the command line arguments with pflag and viper
+func init() {
+	pflag.BoolP("help", "h", false, "Prints this help message")
+	pflag.StringP("output", "o", "./code", "Relative or absolute path to the directory where you want to store user-posted pastes.")
+	pflag.StringP("domain", "d", "localhost", "This will be used as a prefix for an output received by the client. Value will be prepended with http[s].")
+	pflag.IntP("port", "p", 9999, "Port in which the service should listen on.")
+	pflag.BoolP("https", "S", false, fmt.Sprintf("If set, %s returns url with https prefix instead of http.", AppName))
+	pflag.IntP("buffer", "B", 32768, "This parameter defines size of the buffer used for getting data from the user. Maximum size (in bytes) of all input files is defined by this value.")
+	pflag.StringP("log", "l", "", "Log file. This file has to be user-writable.")
+	pflag.Parse()
+	viper.BindPFlags(pflag.CommandLine)
+
+	if viper.GetBool("help") {
+		fmt.Printf("%s! - Version %s, Built on %s from Git tag [%s:%s-%s)\n", AppName, Version, BuildDate, GitBranch, GitCommit, GitState)
+		pflag.Usage()
+		os.Exit(2)
+	}
+
+	if viper.GetBool("https") {
+		viper.Set("uriprefix", "https")
+	} else {
+		viper.Set("uriprefix", "http")
+	}
+}

main.go

@@ -6,57 +6,14 @@ import (
 	"log"
 	"net"
 	"os"
-	"strconv"
 	"time"
 
-	"github.com/spf13/pflag"
 	"github.com/spf13/viper"
 )
 
 // AppName is the canonical name of this program
 const AppName = "Go-Fiche"
 
-const slugMap = "AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz0123456789"
-
-// GitCommit holds the git commit message on compile time
-var GitCommit string
-
-// GitBranch holds the active git branch on compile time
-var GitBranch string
-
-// GitState holds the dirty-state on compile time
-var GitState string
-
-// BuildDate date of compile
-var BuildDate string
-
-// Version version string as contained in VERSION
-var Version string
-
-func init() {
-	pflag.BoolP("help", "h", false, "Prints this help message")
-	pflag.StringP("output", "o", "./code", "Relative or absolute path to the directory where you want to store user-posted pastes.")
-	pflag.StringP("domain", "d", "localhost", "This will be used as a prefix for an output received by the client. Value will be prepended with http[s].")
-	pflag.IntP("port", "p", 9999, "Port in which the service should listen on.")
-	pflag.BoolP("https", "S", false, fmt.Sprintf("If set, %s returns url with https prefix instead of http.", AppName))
-	pflag.IntP("buffer", "B", 32768, "This parameter defines size of the buffer used for getting data from the user. Maximum size (in bytes) of all input files is defined by this value.")
-	pflag.StringP("log", "l", "", "Log file. This file has to be user-writable.")
-	pflag.Parse()
-	viper.BindPFlags(pflag.CommandLine)
-
-	if viper.GetBool("help") {
-		fmt.Printf("%s! - Version %s, Built on %s from Git tag [%s:%s-%s)\n", AppName, Version, BuildDate, GitBranch, GitCommit, GitState)
-		pflag.Usage()
-		os.Exit(2)
-	}
-
-	if viper.GetBool("https") {
-		viper.Set("uriprefix", "https")
-	} else {
-		viper.Set("uriprefix", "http")
-	}
-}
-
 func main() {
 	log.Printf("Starting %s on %s...", AppName, time.Now().Format(time.RFC822Z))
 	listener, err := net.Listen("tcp", fmt.Sprintf(":%d", viper.Get("port")))
@@ -76,19 +33,6 @@ func main() {
 	}
 }
 
-func generateSlug(seed int64) string {
-	stringSeed := fmt.Sprintf("%d", seed)
-	evenLength := (len(stringSeed) / 2) * 2
-	digitHold := int64(0)
-	out := ""
-	for i := 0; i < evenLength; i += 2 {
-		digitHold, _ = strconv.ParseInt(stringSeed[i:i+2], 10, 8)
-		digitHold = digitHold % int64(len(slugMap))
-		out += slugMap[digitHold : digitHold+1]
-	}
-	return out
-}
-
 func handleConnection(conn net.Conn) {
 	remoteHost, err := net.LookupCNAME(conn.RemoteAddr().String())
 	if err != nil {

slug.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// slugMap contains a sequence of valid characters for slug generation
+const slugMap = "AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz0123456789"
+
+// generateSlug takes an integer and generates a string based on slugMap
+func generateSlug(seed int64) string {
+	stringSeed := fmt.Sprintf("%d", seed)
+	evenLength := (len(stringSeed) / 2) * 2
+	digitHold := int64(0)
+	out := ""
+	for i := 0; i < evenLength; i += 2 {
+		digitHold, _ = strconv.ParseInt(stringSeed[i:i+2], 10, 8)
+		digitHold = digitHold % int64(len(slugMap))
+		out += slugMap[digitHold : digitHold+1]
+	}
+	return out
+}