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Add a command queue to standardize and simplify commands that call other

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commands and allow a command to block execution of subsequent
commands. This allows run-shell and if-shell to be synchronous which has
been much requested.

Each client has a default command queue and commands are consumed one at
a time from it. A command may suspend execution from the queue by
returning CMD_RETURN_WAIT and then resume it by calling cmd_continue() -
for example run-shell does this from the callback that is fired after
the job is freed.

When the command queue becomes empty, command clients are automatically
exited (unless attaching). A callback is also fired - this is used for
nested commands in, for example, if-shell which can block execution of
the client's cmdq until a new cmdq becomes empty.

Also merge all the old error/info/print functions together and lose the
old curclient/cmdclient distinction - a cmdq is bound to one client (or
none if in the configuration file), this is a command client if
c->session is NULL otherwise an attached client.
This commit is contained in:
Nicholas Marriott
2013-03-24 09:54:10 +00:00
parent 66edb3392b
commit 20636d956d
84 changed files with 1240 additions and 1187 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
cmd-confirm-before.c
View File

@@ -27,7 +27,7 @@
*/
void cmd_confirm_before_key_binding(struct cmd *, int);
enum cmd_retval cmd_confirm_before_exec(struct cmd *, struct cmd_ctx *);
enum cmd_retval cmd_confirm_before_exec(struct cmd *, struct cmd_q *);
int cmd_confirm_before_callback(void *, const char *);
void cmd_confirm_before_free(void *);
@@ -43,8 +43,8 @@ const struct cmd_entry cmd_confirm_before_entry = {
};
struct cmd_confirm_before_data {
struct client *c;
char *cmd;
struct client *client;
};
void
@@ -66,7 +66,7 @@ cmd_confirm_before_key_binding(struct cmd *self, int key)
}
enum cmd_retval
cmd_confirm_before_exec(struct cmd *self, struct cmd_ctx *ctx)
cmd_confirm_before_exec(struct cmd *self, struct cmd_q *cmdq)
{
struct args *args = self->args;
struct cmd_confirm_before_data *cdata;
@@ -74,12 +74,7 @@ cmd_confirm_before_exec(struct cmd *self, struct cmd_ctx *ctx)
char *cmd, *copy, *new_prompt, *ptr;
const char *prompt;
if (ctx->curclient == NULL) {
ctx->error(ctx, "must be run interactively");
return (CMD_RETURN_ERROR);
}
if ((c = cmd_find_client(ctx, args_get(args, 't'), 0)) == NULL)
if ((c = cmd_find_client(cmdq, args_get(args, 't'), 0)) == NULL)
return (CMD_RETURN_ERROR);
if ((prompt = args_get(args, 'p')) != NULL)
@@ -93,46 +88,44 @@ cmd_confirm_before_exec(struct cmd *self, struct cmd_ctx *ctx)
cdata = xmalloc(sizeof *cdata);
cdata->cmd = xstrdup(args->argv[0]);
cdata->c = c;
status_prompt_set(cdata->c, new_prompt, NULL,
cdata->client = c;
cdata->client->references++;
status_prompt_set(c, new_prompt, NULL,
cmd_confirm_before_callback, cmd_confirm_before_free, cdata,
PROMPT_SINGLE);
free(new_prompt);
return (CMD_RETURN_YIELD);
return (CMD_RETURN_NORMAL);
}
int
cmd_confirm_before_callback(void *data, const char *s)
{
struct cmd_confirm_before_data *cdata = data;
struct client *c = cdata->c;
struct client *c = cdata->client;
struct cmd_list *cmdlist;
struct cmd_ctx *ctx;
char *cause;
if (c->flags & CLIENT_DEAD)
return (0);
if (s == NULL || *s == '\0')
return (0);
if (tolower((u_char) s[0]) != 'y' || s[1] != '\0')
return (0);
if (cmd_string_parse(cdata->cmd, &cmdlist, &cause) != 0) {
if (cmd_string_parse(cdata->cmd, &cmdlist, NULL, 0, &cause) != 0) {
if (cause != NULL) {
*cause = toupper((u_char) *cause);
status_message_set(c, "%s", cause);
cmdq_error(c->cmdq, "%s", cause);
free(cause);
}
return (0);
}
ctx = cmd_get_ctx(NULL, c);
ctx->error = key_bindings_error;
ctx->print = key_bindings_print;
ctx->info = key_bindings_info;
cmd_list_exec(cmdlist, ctx);
cmdq_run(c->cmdq, cmdlist);
cmd_list_free(cmdlist);
cmd_free_ctx(ctx);
return (0);
}
@@ -141,6 +134,9 @@ void
cmd_confirm_before_free(void *data)
{
struct cmd_confirm_before_data *cdata = data;
struct client *c = cdata->client;
c->references--;
free(cdata->cmd);
free(cdata);