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Support code for control mode flow control: allow clients to have

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separate offsets (used and acknowleged) into the pane buffers; turn off
reading from panes when no clients can accept the data; and add a -A
flag to refresh-client to let clients turn receiving a pane on and off.
This commit is contained in:
nicm
2020-05-21 07:24:13 +00:00
parent 6bde1c1837
commit 31e3f2d530
11 changed files with 357 additions and 95 deletions
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70
cmd-refresh-client.c
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@ -34,23 +34,55 @@ const struct cmd_entry cmd_refresh_client_entry = {
.name = "refresh-client",
.alias = "refresh",
.args = { "cC:Df:F:lLRSt:U", 0, 1 },
.usage = "[-cDlLRSU] [-C XxY] [-f flags] " CMD_TARGET_CLIENT_USAGE
" [adjustment]",
.args = { "A:cC:Df:F:lLRSt:U", 0, 1 },
.usage = "[-cDlLRSU] [-A pane:state] [-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_offset(struct client *tc, const char *value)
{
struct window_pane *wp;
struct client_offset *co;
char *copy, *colon;
u_int pane;
if (*value != '%')
return;
copy = xstrdup(value);
if ((colon = strchr(copy, ':')) == NULL)
goto out;
*colon++ = '\0';
if (sscanf(copy, "%%%u", &pane) != 1)
goto out;
wp = window_pane_find_by_id(pane);
if (wp == NULL)
goto out;
co = server_client_add_pane_offset(tc, wp);
if (strcmp(colon, "on") == 0)
co->flags &= ~CLIENT_OFFSET_OFF;
else if (strcmp(colon, "off") == 0)
co->flags |= CLIENT_OFFSET_OFF;
out:
free(copy);
}
static enum cmd_retval
cmd_refresh_client_exec(struct cmd *self, struct cmdq_item *item)
{
struct args *args = cmd_get_args(self);
struct client *tc = cmdq_get_target_client(item);
struct tty *tty = &tc->tty;
struct window *w;
const char *size, *errstr;
u_int x, y, adjust;
struct args *args = cmd_get_args(self);
struct client *tc = cmdq_get_target_client(item);
struct tty *tty = &tc->tty;
struct window *w;
const char *size, *errstr, *value;
u_int x, y, adjust;
struct args_value *av;
if (args_has(args, 'c') ||
args_has(args, 'L') ||
@ -112,11 +144,19 @@ cmd_refresh_client_exec(struct cmd *self, struct cmdq_item *item)
if (args_has(args, 'f'))
server_client_set_flags(tc, args_get(args, 'f'));
if (args_has(args, 'C')) {
if (~tc->flags & CLIENT_CONTROL) {
cmdq_error(item, "not a control client");
return (CMD_RETURN_ERROR);
if (args_has(args, 'A')) {
if (~tc->flags & CLIENT_CONTROL)
goto not_control_client;
value = args_first_value(args, 'A', &av);
while (value != NULL) {
cmd_refresh_client_update_offset(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;
size = args_get(args, 'C');
if (sscanf(size, "%u,%u", &x, &y) != 2 &&
sscanf(size, "%ux%u", &x, &y) != 2) {
@ -142,4 +182,8 @@ cmd_refresh_client_exec(struct cmd *self, struct cmdq_item *item)
server_redraw_client(tc);
}
return (CMD_RETURN_NORMAL);
not_control_client:
cmdq_error(item, "not a control client");
return (CMD_RETURN_ERROR);
}