Allow shortened length to be specified.

Author: erikogenvik

README.md

@@ -50,7 +50,8 @@ This image bundles headless Chrome in the latest version so debugger is ready to
 -q	do not show logs on stdout
 -r string
    remote address (default "localhost:9222")
--s	shorten requests and responses
+-s max_length
+   shorten requests and responses to max_length
 -version
    display version information
   ```

flags.go

@@ -7,7 +7,7 @@ import (
 var (
 	flagListen         = flag.String("l", "localhost:9223", "listen address")
 	flagRemote         = flag.String("r", "localhost:9222", "remote address")
-	flagEllipsis       = flag.Bool("s", false, "shorten requests and responses")
+	flagEllipsis       = flag.Int("s", 0, "shorten requests and responses if above length")
 	flagOnce           = flag.Bool("once", false, "debug single session")
 	flagShowRequests   = flag.Bool("i", false, "include request frames as they are sent")
 	flagDistributeLogs = flag.Bool("d", false, "write logs file per targetId")

utils.go

@@ -6,10 +6,6 @@ import (
 	"strings"
 )
 
-const (
-	ellipsisLength = 80
-)
-
 func center(message string, length int) string {
 	padding := (length - len(message)) / 2
 
@@ -32,8 +28,8 @@ func serialize(value interface{}) string {
 
 	buff, err := json.Marshal(value)
 	if err == nil {
-		if *flagEllipsis && len(buff) > ellipsisLength {
-			return string(buff[:ellipsisLength]) + "..."
+		if *flagEllipsis != 0 && len(buff) > *flagEllipsis {
+			return string(buff[:*flagEllipsis]) + "..."
 		}
 
 		serialized := string(buff)