Implementing config.json

.gitignore

@@ -1 +1,2 @@
 doksie
+config.json

config.json.example

@@ -0,0 +1,3 @@
+{
+	"port": 6900
+}

main.go

@@ -1,9 +1,10 @@
 package main
 
 import (
+	"encoding/json"
+	"html/template"
 	"log"
 	"os"
-	"text/template"
 
 	"github.com/gomarkdown/markdown"
 	"github.com/gomarkdown/markdown/html"
@@ -13,6 +14,10 @@ import (
 	"net/http"
 )
 
+type Config struct {
+	Port uint
+}
+
 type Page struct {
 	Title      string
 	MarkDown   []byte
@@ -20,8 +25,6 @@ type Page struct {
 	Navigation string
 }
 
-const port = 6900
-
 func mdToHTML(md []byte) []byte {
 	// create markdown parser with extensions
 	extensions := parser.CommonExtensions | parser.AutoHeadingIDs | parser.NoEmptyLineBeforeBlock
@@ -37,10 +40,26 @@ func mdToHTML(md []byte) []byte {
 }
 
 func main() {
-	fmt.Printf("Starting listener on :%v", port)
+	fmt.Println("Loading config.json")
+	cfgfile, err := os.Open("config.json")
+	if err != nil {
+		log.Fatal("Error reading config.json!")
+		return
+	}
+	defer cfgfile.Close()
+
+	decoder := json.NewDecoder(cfgfile)
+	Config := Config{}
+	err = decoder.Decode(&Config)
+	if err != nil {
+		log.Fatal("Can't decode config.json!")
+		return
+	}
+
+	fmt.Printf("Starting listener on :%v", Config.Port)
 	http.Handle("/static/", http.FileServer(http.Dir("./")))
 	http.HandleFunc("/", httpRootHandler)
-	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%v", port), nil))
+	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%v", Config.Port), nil))
 }
 
 func loadPage(fileUrl string) ([]byte, error) {