Add ReadDir function to list local files.

Includes documentation.

tpl/template_funcs.go

@@ -1353,6 +1353,7 @@ func init() {
 		"dateFormat":  DateFormat,
 		"getJSON":     GetJSON,
 		"getCSV":      GetCSV,
+		"ReadDir":     ReadDir,
 		"seq":         helpers.Seq,
 		"getenv":      func(varName string) string { return os.Getenv(varName) },
 

tpl/template_resources.go

@@ -21,6 +21,8 @@ import (
 	"io/ioutil"
 	"net/http"
 	"net/url"
+	"os"
+	"path/filepath"
 	"strings"
 	"sync"
 	"time"
@@ -263,3 +265,25 @@ func GetCSV(sep string, urlParts ...string) [][]string {
 	}
 	return d
 }
+
+func ReadDir(path string) []os.FileInfo {
+    wd := ""
+    p := ""
+	if viper.GetString("WorkingDir") != "" {
+		wd = viper.GetString("WorkingDir")
+	}
+    if strings.Contains(path, "..") {
+        jww.ERROR.Printf("Path contains parent directory marker ..\n", path)
+		return nil
+    }
+
+	p = filepath.Clean(path)
+	p = filepath.Join(wd, p)
+
+	list, err := ioutil.ReadDir(p)
+	if err != nil {
+		jww.ERROR.Printf("Failed to read Directory %s with error message %s", path, err)
+		return nil
+	}
+	return list
+}