Merge branch 'obsd-master'
[tmux.git] / cmd-confirm-before.c
blob485e6e65d7f59d05a5f74d7d3180e5ac26805b48
1 /* $OpenBSD$ */
3 /*
4 * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 #include <sys/types.h>
21 #include <ctype.h>
22 #include <stdlib.h>
23 #include <string.h>
25 #include "tmux.h"
28 * Asks for confirmation before executing a command.
31 static enum args_parse_type cmd_confirm_before_args_parse(struct args *,
32 u_int, char **);
33 static enum cmd_retval cmd_confirm_before_exec(struct cmd *,
34 struct cmdq_item *);
36 static int cmd_confirm_before_callback(struct client *, void *,
37 const char *, int);
38 static void cmd_confirm_before_free(void *);
40 const struct cmd_entry cmd_confirm_before_entry = {
41 .name = "confirm-before",
42 .alias = "confirm",
44 .args = { "bc:p:t:y", 1, 1, cmd_confirm_before_args_parse },
45 .usage = "[-by] [-c confirm_key] [-p prompt] " CMD_TARGET_CLIENT_USAGE
46 " command",
48 .flags = CMD_CLIENT_TFLAG,
49 .exec = cmd_confirm_before_exec
52 struct cmd_confirm_before_data {
53 struct cmdq_item *item;
54 struct cmd_list *cmdlist;
55 u_char confirm_key;
56 int default_yes;
59 static enum args_parse_type
60 cmd_confirm_before_args_parse(__unused struct args *args, __unused u_int idx,
61 __unused char **cause)
63 return (ARGS_PARSE_COMMANDS_OR_STRING);
66 static enum cmd_retval
67 cmd_confirm_before_exec(struct cmd *self, struct cmdq_item *item)
69 struct args *args = cmd_get_args(self);
70 struct cmd_confirm_before_data *cdata;
71 struct client *tc = cmdq_get_target_client(item);
72 struct cmd_find_state *target = cmdq_get_target(item);
73 char *new_prompt;
74 const char *confirm_key, *prompt, *cmd;
75 int wait = !args_has(args, 'b');
77 cdata = xcalloc(1, sizeof *cdata);
78 cdata->cmdlist = args_make_commands_now(self, item, 0, 1);
79 if (cdata->cmdlist == NULL)
80 return (CMD_RETURN_ERROR);
82 if (wait)
83 cdata->item = item;
85 cdata->default_yes = args_has(args, 'y');
86 if ((confirm_key = args_get(args, 'c')) != NULL) {
87 if (confirm_key[1] == '\0' &&
88 confirm_key[0] > 31 &&
89 confirm_key[0] < 127)
90 cdata->confirm_key = confirm_key[0];
91 else {
92 cmdq_error(item, "invalid confirm key");
93 return (CMD_RETURN_ERROR);
96 else
97 cdata->confirm_key = 'y';
99 if ((prompt = args_get(args, 'p')) != NULL)
100 xasprintf(&new_prompt, "%s ", prompt);
101 else {
102 cmd = cmd_get_entry(cmd_list_first(cdata->cmdlist))->name;
103 xasprintf(&new_prompt, "Confirm '%s'? (%c/n) ",
104 cmd, cdata->confirm_key);
107 status_prompt_set(tc, target, new_prompt, NULL,
108 cmd_confirm_before_callback, cmd_confirm_before_free, cdata,
109 PROMPT_SINGLE, PROMPT_TYPE_COMMAND);
110 free(new_prompt);
112 if (!wait)
113 return (CMD_RETURN_NORMAL);
114 return (CMD_RETURN_WAIT);
117 static int
118 cmd_confirm_before_callback(struct client *c, void *data, const char *s,
119 __unused int done)
121 struct cmd_confirm_before_data *cdata = data;
122 struct cmdq_item *item = cdata->item, *new_item;
123 int retcode = 1;
125 if (c->flags & CLIENT_DEAD)
126 goto out;
128 if (s == NULL)
129 goto out;
130 if (s[0] != cdata->confirm_key && (s[0] != '\0' || !cdata->default_yes))
131 goto out;
132 retcode = 0;
134 if (item == NULL) {
135 new_item = cmdq_get_command(cdata->cmdlist, NULL);
136 cmdq_append(c, new_item);
137 } else {
138 new_item = cmdq_get_command(cdata->cmdlist,
139 cmdq_get_state(item));
140 cmdq_insert_after(item, new_item);
143 out:
144 if (item != NULL) {
145 if (cmdq_get_client(item) != NULL &&
146 cmdq_get_client(item)->session == NULL)
147 cmdq_get_client(item)->retval = retcode;
148 cmdq_continue(item);
150 return (0);
153 static void
154 cmd_confirm_before_free(void *data)
156 struct cmd_confirm_before_data *cdata = data;
158 cmd_list_free(cdata->cmdlist);
159 free(cdata);