add width limit option to diff

Author: Josh Newman

README.md

@@ -157,20 +157,24 @@ Global Flags:
 
 ### `diff`
 
-```console
+Simple diff between 2 paths. Can also diff values.
+
+````console
 $ ezparams diff --help
 Shows the difference recursively between 2 paths.
 
 Usage:
   ezparams diff <path 1> <path 2> [flags]
 
 Flags:
-  -h, --help     help for diff
-  -v, --values   show value diffs
+  -d, --decrypt           decrypt "SecureString" values (default true)
+  -h, --help              help for diff
+  -v, --values            show value diffs
+  -w, --width-limit int   width limit of value output
 
 Global Flags:
       --config string   config file (default is $HOME/.ezparams.yaml)
   -l, --local-time      convert UTC to local time (default true)
       --region string   AWS region to use
-      --version         show version
-```
+      --version         show version```
+````

cmd/diff.go

@@ -39,6 +39,7 @@ func runDiffCmd(cmd *cobra.Command, args []string) {
 
 	showValues, _ := cmd.Flags().GetBool("values")
 	decrypt, _ := cmd.Flags().GetBool("decrypt")
+	widthLimit, _ := cmd.Flags().GetInt("width-limit")
 
 	fmt.Println(text.FgBlue.Sprintf("Getting diff between \"%s\" and \"%s\"...", path1, path2))
 
@@ -62,6 +63,19 @@ func runDiffCmd(cmd *cobra.Command, args []string) {
 	if showValues {
 		headerRow = insertColumn(headerRow, 1, "Value")
 		headerRow = insertColumn(headerRow, 3, "Value")
+
+		if widthLimit > 0 {
+			tw.SetColumnConfigs([]table.ColumnConfig{
+				{
+					Number:   2,
+					WidthMax: widthLimit,
+				},
+				{
+					Number:   4,
+					WidthMax: widthLimit,
+				},
+			})
+		}
 	}
 
 	tw.AppendHeader(headerRow)
@@ -154,6 +168,7 @@ func runDiffCmd(cmd *cobra.Command, args []string) {
 func init() {
 	diffCmd.Flags().BoolP("values", "v", false, "show value diffs")
 	diffCmd.Flags().BoolP("decrypt", "d", true, "decrypt \"SecureString\" values")
+	diffCmd.Flags().IntP("width-limit", "w", 0, "width limit of value output")
 
 	rootCmd.AddCommand(diffCmd)
 }