tmux/cmd-command-prompt.c
nicm ddc4512d2e Rewrite command queue handling. Each client still has a command queue,
but there is also now a global command queue. Instead of command queues
being dispatched on demand from wherever the command happens to be
added, they are now all dispatched from the top level server
loop. Command queues may now also include callbacks as well as commands,
and items may be inserted after the current command as well as at the end.

This all makes command queues significantly more predictable and easier
to use, and avoids the complex multiple nested command queues used by
source-file, if-shell and friends.

A mass rename of struct cmdq to a better name (cmdq_item probably) is
coming.
2016-10-16 17:55:14 +00:00

195 lines
4.7 KiB
C

/* $OpenBSD$ */
/*
* Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "tmux.h"
/*
* Prompt for command in client.
*/
static enum cmd_retval cmd_command_prompt_exec(struct cmd *, struct cmd_q *);
static int cmd_command_prompt_callback(void *, const char *);
static void cmd_command_prompt_free(void *);
const struct cmd_entry cmd_command_prompt_entry = {
.name = "command-prompt",
.alias = NULL,
.args = { "1I:Np:t:", 0, 1 },
.usage = "[-1N] [-I inputs] [-p prompts] " CMD_TARGET_CLIENT_USAGE " "
"[template]",
.tflag = CMD_CLIENT,
.flags = 0,
.exec = cmd_command_prompt_exec
};
struct cmd_command_prompt_cdata {
struct client *c;
char *inputs;
char *next_input;
char *next_prompt;
char *prompts;
char *template;
int idx;
};
static enum cmd_retval
cmd_command_prompt_exec(struct cmd *self, struct cmd_q *cmdq)
{
struct args *args = self->args;
const char *inputs, *prompts;
struct cmd_command_prompt_cdata *cdata;
struct client *c = cmdq->state.c;
char *prompt, *ptr, *input = NULL;
size_t n;
int flags;
if (c->prompt_string != NULL)
return (CMD_RETURN_NORMAL);
cdata = xmalloc(sizeof *cdata);
cdata->c = c;
cdata->idx = 1;
cdata->inputs = NULL;
cdata->next_input = NULL;
cdata->next_prompt = NULL;
cdata->prompts = NULL;
cdata->template = NULL;
if (args->argc != 0)
cdata->template = xstrdup(args->argv[0]);
else
cdata->template = xstrdup("%1");
if ((prompts = args_get(args, 'p')) != NULL)
cdata->prompts = xstrdup(prompts);
else if (args->argc != 0) {
n = strcspn(cdata->template, " ,");
xasprintf(&cdata->prompts, "(%.*s) ", (int) n, cdata->template);
} else
cdata->prompts = xstrdup(":");
/* Get first prompt. */
cdata->next_prompt = cdata->prompts;
ptr = strsep(&cdata->next_prompt, ",");
if (prompts == NULL)
prompt = xstrdup(ptr);
else
xasprintf(&prompt, "%s ", ptr);
/* Get initial prompt input. */
if ((inputs = args_get(args, 'I')) != NULL) {
cdata->inputs = xstrdup(inputs);
cdata->next_input = cdata->inputs;
input = strsep(&cdata->next_input, ",");
}
flags = 0;
if (args_has(args, '1'))
flags |= PROMPT_SINGLE;
else if (args_has(args, 'N'))
flags |= PROMPT_NUMERIC;
status_prompt_set(c, prompt, input, cmd_command_prompt_callback,
cmd_command_prompt_free, cdata, flags);
free(prompt);
return (CMD_RETURN_NORMAL);
}
static enum cmd_retval
cmd_command_prompt_error(struct cmd_q *cmdq, void *data)
{
char *error = data;
cmdq_error(cmdq, "%s", error);
free(error);
return (CMD_RETURN_NORMAL);
}
static int
cmd_command_prompt_callback(void *data, const char *s)
{
struct cmd_command_prompt_cdata *cdata = data;
struct client *c = cdata->c;
struct cmd_list *cmdlist;
struct cmd_q *new_cmdq;
char *cause, *new_template, *prompt, *ptr;
char *input = NULL;
if (s == NULL)
return (0);
new_template = cmd_template_replace(cdata->template, s, cdata->idx);
free(cdata->template);
cdata->template = new_template;
/*
* Check if there are more prompts; if so, get its respective input
* and update the prompt data.
*/
if ((ptr = strsep(&cdata->next_prompt, ",")) != NULL) {
xasprintf(&prompt, "%s ", ptr);
input = strsep(&cdata->next_input, ",");
status_prompt_update(c, prompt, input);
free(prompt);
cdata->idx++;
return (1);
}
if (cmd_string_parse(new_template, &cmdlist, NULL, 0, &cause) != 0) {
if (cause != NULL) {
new_cmdq = cmdq_get_callback(cmd_command_prompt_error,
cause);
} else
new_cmdq = NULL;
} else {
new_cmdq = cmdq_get_command(cmdlist, NULL, NULL, 0);
cmd_list_free(cmdlist);
}
if (new_cmdq != NULL)
cmdq_append(c, new_cmdq);
if (c->prompt_callbackfn != (void *)&cmd_command_prompt_callback)
return (1);
return (0);
}
static void
cmd_command_prompt_free(void *data)
{
struct cmd_command_prompt_cdata *cdata = data;
free(cdata->inputs);
free(cdata->prompts);
free(cdata->template);
free(cdata);
}