recv now has -json for pretty print

cmd/recv/main.go

@@ -1,10 +1,12 @@
 package main
 
 import (
+	"encoding/json"
 	"fmt"
 	"io"
 	"io/ioutil"
 	"net/mail"
+	"os"
 	"strings"
 	"time"
 
@@ -21,6 +23,7 @@ func main() {
 	as.Append(args.STRING, "u", "username", emailer.From)
 	as.Append(args.STRING, "p", "password", emailer.Password)
 	as.Append(args.INT, "b", "dont read more than this many characters", 4096)
+	as.Append(args.BOOL, "json", "output as json", false)
 	if err := as.Parse(); err != nil {
 		panic(err)
 	}
@@ -42,6 +45,7 @@ func main() {
 	if err != nil {
 		panic(err)
 	}
+	emails := make([]map[string]any, 0, emailer.Limit)
 	for msg := range msgs {
 		b, _ := ioutil.ReadAll(io.LimitReader(msg.Body, int64(as.GetInt("b"))))
 		s := strings.ReplaceAll(string(b), "\r\n", "\n")
@@ -52,12 +56,26 @@ func main() {
 		}
 		d, _ := msg.Header.Date()
 		d = d.In(time.Local)
-		fmt.Printf(
-			"@%+v @%+v: \n\t%+v: \n\t%s\n",
-			d.Format("06-01-02T15:04Z07"),
-			msg.Header.Get("From"),
-			msg.Header.Get("Subject"),
-			s,
-		)
+		if as.GetBool("json") {
+			emails = append(emails, map[string]any{
+				"t":       d.Format("06-01-02T15:04Z07"),
+				"from":    msg.Header.Get("From"),
+				"subject": msg.Header.Get("Subject"),
+				"body":    s,
+			})
+		} else {
+			fmt.Printf(
+				"@%+v @%+v: \n\t%+v: \n\t%s\n",
+				d.Format("06-01-02T15:04Z07"),
+				msg.Header.Get("From"),
+				msg.Header.Get("Subject"),
+				s,
+			)
+		}
+	}
+	if as.GetBool("json") {
+		enc := json.NewEncoder(os.Stdout)
+		enc.SetIndent("", "   ")
+		enc.Encode(emails)
 	}
 }