Add support for file editor

handlers/file_instance.go

@@ -0,0 +1,53 @@
+package handlers
+
+import (
+	"encoding/base64"
+	"io"
+	"log"
+	"net/http"
+
+	"github.com/gorilla/mux"
+)
+
+func file(rw http.ResponseWriter, req *http.Request) {
+	vars := mux.Vars(req)
+	sessionId := vars["sessionId"]
+	instanceName := vars["instanceName"]
+
+	query := req.URL.Query()
+
+	path := query.Get("path")
+
+	if path == "" {
+		rw.WriteHeader(http.StatusBadRequest)
+		return
+	}
+
+	s, _ := core.SessionGet(sessionId)
+	if s == nil {
+		rw.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	i := core.InstanceGet(s, instanceName)
+	if i == nil {
+		rw.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	instanceFile, err := core.InstanceFile(i, path)
+
+	if err != nil {
+		log.Println(err)
+		rw.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	encoder := base64.NewEncoder(base64.StdEncoding, rw)
+
+	if _, err = io.Copy(encoder, instanceFile); err != nil {
+		log.Println(err)
+		rw.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+}