On Wed, Mar 02, 2016 at 03:56:16PM +0100, Quentin Monnet wrote:
> Add an option to ovs-ofctl utility so as to obtain colorized output in
> tty, for easier reading. Currently, only the dump-flows command supports
> colors.
>
> A new `--color` option has been added to ovs-ofctl so as to indicate
> whether color markers should be used or not. It can be set to `always`
> (force colors), `never` (no colors) or `auto` (use colors only if output
> is a tty). If provided without any value, it is the same as `auto`. If
> the option is not provided at all, colors are disabled by default.
>
> Examples:
> This first call will output colorized flows:
>
> ovs-ofctl dump-flows br0 --color=always
>
> These two calls will produce colorized output on a tty, but they will
> not use color markers if the output is redirected to a file or piped
> into another command:
>
> ovs-ofctl dump-flows br0 --color=auto
> ovs-ofctl dump-flows br0 --color
>
> These two calls will not use color markers:
>
> ovs-ofctl dump-flows br0 --color=never
> ovs-ofctl dump-flows br0
>
> The result of this option is stored into a variable which is to be
> forwarded (in next commits) as a function argument until it reaches the
> functions that print the elements of the flows.
>
> Signed-off-by: Quentin Monnet <quentin.mon...@6wind.com>
Thanks. I'm going to fold in the following style fixes:
diff --git a/utilities/ovs-ofctl.c b/utilities/ovs-ofctl.c
index c535005..db59ff6 100644
--- a/utilities/ovs-ofctl.c
+++ b/utilities/ovs-ofctl.c
@@ -296,28 +296,24 @@ parse_options(int argc, char *argv[])
case OPT_COLOR:
if (optarg) {
- if (!strcasecmp (optarg, "always")
- || !strcasecmp (optarg, "yes")
- || !strcasecmp (optarg, "force")) {
+ if (!strcasecmp(optarg, "always")
+ || !strcasecmp(optarg, "yes")
+ || !strcasecmp(optarg, "force")) {
enable_color = true;
- }
- else if (!strcasecmp (optarg, "never")
- || !strcasecmp (optarg, "no")
- || !strcasecmp (optarg, "none")) {
+ } else if (!strcasecmp(optarg, "never")
+ || !strcasecmp(optarg, "no")
+ || !strcasecmp(optarg, "none")) {
enable_color = false;
- }
- /* If --color is empty or set to 'auto', determine whether we
- * need colors, i.e. whether standard output is a tty. */
- else if (!strcasecmp (optarg, "auto")
- || !strcasecmp (optarg, "tty")
- || !strcasecmp (optarg, "if-tty")) {
+ } else if (!strcasecmp(optarg, "auto")
+ || !strcasecmp(optarg, "tty")
+ || !strcasecmp(optarg, "if-tty")) {
+ /* Determine whether we need colors, i.e. whether standard
+ * output is a tty. */
enable_color = is_stdout_a_tty();
- }
- else {
+ } else {
ovs_fatal(0, "incorrect value `%s' for --color", optarg);
}
- }
- else {
+ } else {
enable_color = is_stdout_a_tty();
}
break;
@@ -450,7 +446,7 @@ usage(void)
" --sort[=field] sort in ascending order\n"
" --rsort[=field] sort in descending order\n"
" --unixctl=SOCKET set control socket name\n"
- " --color[=always|never|auto] use colors markers\n"
+ " --color[=always|never|auto] control use of color in output\n"
" -h, --help display this help message\n"
" -V, --version display version information\n");
exit(EXIT_SUCCESS);
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