feat: add split and toJSON template functions

Author: chuhlomin

main.go

@@ -3,12 +3,14 @@ package main
 import (
 	"bytes"
 	"encoding/base64"
+	"encoding/json"
 	"errors"
 	"fmt"
 	"log"
 	"os"
 	"reflect"
 	"strconv"
+	"strings"
 	"text/template"
 	"time"
 	_ "time/tzdata"
@@ -143,6 +145,17 @@ var funcMap = template.FuncMap{
 	"base64": func(in string) string {
 		return base64.StdEncoding.EncodeToString([]byte(in))
 	},
+	"split": func(sep string, in string) []string {
+		return strings.Split(in, sep)
+	},
+	"toJSON": func(in interface{}) string {
+		b, err := json.Marshal(in)
+		if err != nil {
+			log.Printf("failed to marshal to JSON: %v", err)
+			return ""
+		}
+		return string(b)
+	},
 }
 
 func renderTemplate(templateFilePath string, vars vars) (string, error) {

main_test.go

@@ -153,7 +153,13 @@ func TestRenderTemplate(t *testing.T) {
 				"time": time.Date(2023, time.August, 6, 15, 8, 28, 0, time.UTC),
 			},
 			nil,
-			"06 Aug 2023 11:08:28\n06 Aug 2023 11:08:28\n[download](https://github.com)\n1,000\nQUJD\n",
+			`06 Aug 2023 11:08:28
+06 Aug 2023 11:08:28
+[download](https://github.com)
+1,000
+QUJD
+["1","2","3"]
+`,
 		},
 	}
 

testdata/funcs.txt

@@ -3,3 +3,4 @@
 {{ "https://github.com" | mdlink "download" }}
 {{ "1000" | number }}
 {{ "ABC" | base64 }}
+{{ "1,2,3" | split "," | toJSON }}