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Add a way for control mode clients to subscribe to a format and be

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notified of changes rather than having to poll. GitHub issue 2242.
This commit is contained in:
nicm
2020-07-06 09:14:20 +00:00
parent 2bf612a806
commit 66d5e5de7a
5 changed files with 509 additions and 13 deletions
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65
cmd-refresh-client.c
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@ -34,27 +34,62 @@ const struct cmd_entry cmd_refresh_client_entry = {
.name = "refresh-client",
.alias = "refresh",
.args = { "A:cC:Df:F:lLRSt:U", 0, 1 },
.usage = "[-cDlLRSU] [-A pane:state] [-C XxY] [-f flags] "
CMD_TARGET_CLIENT_USAGE " [adjustment]",
.args = { "A:B:cC:Df:F:lLRSt:U", 0, 1 },
.usage = "[-cDlLRSU] [-A pane:state] [-B name:what:format] "
"[-C XxY] [-f flags] " CMD_TARGET_CLIENT_USAGE " [adjustment]",
.flags = CMD_AFTERHOOK|CMD_CLIENT_TFLAG,
.exec = cmd_refresh_client_exec
};
static void
cmd_refresh_client_update_subscription(struct client *tc, const char *value)
{
char *copy, *split, *name, *what;
enum control_sub_type subtype;
int subid = -1;
copy = name = xstrdup(value);
if ((split = strchr(copy, ':')) == NULL) {
control_remove_sub(tc, copy);
goto out;
}
*split++ = '\0';
what = split;
if ((split = strchr(what, ':')) == NULL)
goto out;
*split++ = '\0';
if (strcmp(what, "%*") == 0)
subtype = CONTROL_SUB_ALL_PANES;
else if (sscanf(what, "%%%d", &subid) == 1 && subid >= 0)
subtype = CONTROL_SUB_PANE;
else if (strcmp(what, "@*") == 0)
subtype = CONTROL_SUB_ALL_WINDOWS;
else if (sscanf(what, "@%d", &subid) == 1 && subid >= 0)
subtype = CONTROL_SUB_WINDOW;
else
subtype = CONTROL_SUB_SESSION;
control_add_sub(tc, name, subtype, subid, split);
out:
free(copy);
}
static void
cmd_refresh_client_update_offset(struct client *tc, const char *value)
{
struct window_pane *wp;
char *copy, *colon;
char *copy, *split;
u_int pane;
if (*value != '%')
return;
copy = xstrdup(value);
if ((colon = strchr(copy, ':')) == NULL)
if ((split = strchr(copy, ':')) == NULL)
goto out;
*colon++ = '\0';
*split++ = '\0';
if (sscanf(copy, "%%%u", &pane) != 1)
goto out;
@ -62,13 +97,13 @@ cmd_refresh_client_update_offset(struct client *tc, const char *value)
if (wp == NULL)
goto out;
if (strcmp(colon, "on") == 0)
if (strcmp(split, "on") == 0)
control_set_pane_on(tc, wp);
else if (strcmp(colon, "off") == 0)
else if (strcmp(split, "off") == 0)
control_set_pane_off(tc, wp);
else if (strcmp(colon, "continue") == 0)
else if (strcmp(split, "continue") == 0)
control_continue_pane(tc, wp);
else if (strcmp(colon, "pause") == 0)
else if (strcmp(split, "pause") == 0)
control_pause_pane(tc, wp);
out:
@ -156,6 +191,16 @@ cmd_refresh_client_exec(struct cmd *self, struct cmdq_item *item)
}
return (CMD_RETURN_NORMAL);
}
if (args_has(args, 'B')) {
if (~tc->flags & CLIENT_CONTROL)
goto not_control_client;
value = args_first_value(args, 'B', &av);
while (value != NULL) {
cmd_refresh_client_update_subscription(tc, value);
value = args_next_value(&av);
}
return (CMD_RETURN_NORMAL);
}
if (args_has(args, 'C')) {
if (~tc->flags & CLIENT_CONTROL)
goto not_control_client;