Update help page

templates/help.html

@@ -30,7 +30,7 @@
         {{end}}
     </ul>
 
-    <p><code>width</code> and <code>height</code> are in pixels</p>
+    <p><code>width</code> and <code>height</code> are in pixels - PDF417 is a fixed size and these options will only change the canvas size.</p>
 
     <p><code>ecc_level</code> should be 1, 2, 3 or 4 where 1 is least resilient and 4 is most resilient</p>
 

validation/rules.go

@@ -41,13 +41,13 @@ var FormatRules = map[string]rule{
 		divisible: 1,
 	},
 
-	"code39": {
+	/*	"code39": {
 			minLength: 1,
 			maxLength: 80,
 			charset:   *CODE39,
 			divisible: 1,
 		},
-
+	*/
 	"code93": {
 		minLength: 1,
 		maxLength: 80,
@@ -68,7 +68,7 @@ var FormatRules = map[string]rule{
 		charset:   *ANY,
 		divisible: 1,
 	},
-
+	/*
 		"ean8": {
 			minLength: 7,
 			maxLength: 7,
@@ -82,7 +82,7 @@ var FormatRules = map[string]rule{
 			charset:   *NUMERAL,
 			divisible: 1,
 		},
-
+	*/
 	"pdf417": {
 		minLength: 1,
 		maxLength: 1100,

web/help.go

@@ -1,7 +1,6 @@
 package web
 
 import (
-	"fmt"
 	"html/template"
 	"net/http"
 
@@ -23,14 +22,9 @@ func buildPage(w http.ResponseWriter, r *http.Request) {
 		BarcodeOptions: barcodeOptions,
 	}
 
-	tmpl, err := template.New("help").ParseFiles("templates/help.html") // Match template name and file name
-	if err != nil {
-		fmt.Println("Error templating page: ", err)
-		http.Error(w, err.Error(), http.StatusInternalServerError)
-		return
-	}
+	tmpl := template.Must(template.New("help.html").ParseFiles("templates/help.html"))
 
-	err = tmpl.Execute(w, data)
+	err := tmpl.Execute(w, data)
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return