xref: /openbsd/usr.bin/tmux/cmd-command-prompt.c (revision 5a38ef86)
1 /* $OpenBSD: cmd-command-prompt.c,v 1.64 2021/09/22 15:21:44 nicm Exp $ */
2 
3 /*
4  * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
5  *
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.
9  *
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.
17  */
18 
19 #include <sys/types.h>
20 
21 #include <ctype.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <time.h>
25 
26 #include "tmux.h"
27 
28 /*
29  * Prompt for command in client.
30  */
31 
32 static enum args_parse_type	cmd_command_prompt_args_parse(struct args *,
33 				    u_int, char **);
34 static enum cmd_retval		cmd_command_prompt_exec(struct cmd *,
35 				    struct cmdq_item *);
36 
37 static int	cmd_command_prompt_callback(struct client *, void *,
38 		    const char *, int);
39 static void	cmd_command_prompt_free(void *);
40 
41 const struct cmd_entry cmd_command_prompt_entry = {
42 	.name = "command-prompt",
43 	.alias = NULL,
44 
45 	.args = { "1bFkiI:Np:t:T:", 0, 1, cmd_command_prompt_args_parse },
46 	.usage = "[-1bFkiN] [-I inputs] [-p prompts] " CMD_TARGET_CLIENT_USAGE
47 		 " [-T type] [template]",
48 
49 	.flags = CMD_CLIENT_TFLAG,
50 	.exec = cmd_command_prompt_exec
51 };
52 
53 struct cmd_command_prompt_prompt {
54 	char	*input;
55 	char	*prompt;
56 };
57 
58 struct cmd_command_prompt_cdata {
59 	struct cmdq_item		 *item;
60 	struct args_command_state	 *state;
61 
62 	int				  flags;
63 	enum prompt_type		  prompt_type;
64 
65 	struct cmd_command_prompt_prompt *prompts;
66 	u_int				  count;
67 	u_int				  current;
68 
69 	int				  argc;
70 	char				**argv;
71 };
72 
73 static enum args_parse_type
74 cmd_command_prompt_args_parse(__unused struct args *args, __unused u_int idx,
75     __unused char **cause)
76 {
77 	return (ARGS_PARSE_COMMANDS_OR_STRING);
78 }
79 
80 static enum cmd_retval
81 cmd_command_prompt_exec(struct cmd *self, struct cmdq_item *item)
82 {
83 	struct args			*args = cmd_get_args(self);
84 	struct client			*tc = cmdq_get_target_client(item);
85 	struct cmd_find_state		*target = cmdq_get_target(item);
86 	const char			*type, *s, *input;
87 	struct cmd_command_prompt_cdata	*cdata;
88 	char				*tmp, *prompts, *prompt, *next_prompt;
89 	char				*inputs = NULL, *next_input;
90 	u_int				 count = args_count(args);
91 	int				 wait = !args_has(args, 'b'), space = 1;
92 
93 	if (tc->prompt_string != NULL)
94 		return (CMD_RETURN_NORMAL);
95 	if (args_has(args, 'i'))
96 		wait = 0;
97 
98 	cdata = xcalloc(1, sizeof *cdata);
99 	if (wait)
100 		cdata->item = item;
101 	cdata->state = args_make_commands_prepare(self, item, 0, "%1", wait,
102 	    args_has(args, 'F'));
103 
104 	if ((s = args_get(args, 'p')) == NULL) {
105 		if (count != 0) {
106 			tmp = args_make_commands_get_command(cdata->state);
107 			xasprintf(&prompts, "(%s)", tmp);
108 			free(tmp);
109 		} else {
110 			prompts = xstrdup(":");
111 			space = 0;
112 		}
113 		next_prompt = prompts;
114 	} else
115 		next_prompt = prompts = xstrdup (s);
116 	if ((s = args_get(args, 'I')) != NULL)
117 		next_input = inputs = xstrdup(s);
118 	else
119 		next_input = NULL;
120 	while ((prompt = strsep(&next_prompt, ",")) != NULL) {
121 		cdata->prompts = xreallocarray(cdata->prompts, cdata->count + 1,
122 		    sizeof *cdata->prompts);
123 		if (!space)
124 			tmp = xstrdup(prompt);
125 		else
126 			xasprintf(&tmp, "%s ", prompt);
127 		cdata->prompts[cdata->count].prompt = tmp;
128 
129 		if (next_input != NULL) {
130 			input = strsep(&next_input, ",");
131 			if (input == NULL)
132 				input = "";
133 		} else
134 			input = "";
135 		cdata->prompts[cdata->count].input = xstrdup(input);
136 
137 		cdata->count++;
138 	}
139 	free(inputs);
140 	free(prompts);
141 
142 	if ((type = args_get(args, 'T')) != NULL) {
143 		cdata->prompt_type = status_prompt_type(type);
144 		if (cdata->prompt_type == PROMPT_TYPE_INVALID) {
145 			cmdq_error(item, "unknown type: %s", type);
146 			return (CMD_RETURN_ERROR);
147 		}
148 	} else
149 		cdata->prompt_type = PROMPT_TYPE_COMMAND;
150 
151 	if (args_has(args, '1'))
152 		cdata->flags |= PROMPT_SINGLE;
153 	else if (args_has(args, 'N'))
154 		cdata->flags |= PROMPT_NUMERIC;
155 	else if (args_has(args, 'i'))
156 		cdata->flags |= PROMPT_INCREMENTAL;
157 	else if (args_has(args, 'k'))
158 		cdata->flags |= PROMPT_KEY;
159 	status_prompt_set(tc, target, cdata->prompts[0].prompt,
160 	    cdata->prompts[0].input, cmd_command_prompt_callback,
161 	    cmd_command_prompt_free, cdata, cdata->flags, cdata->prompt_type);
162 
163 	if (!wait)
164 		return (CMD_RETURN_NORMAL);
165 	return (CMD_RETURN_WAIT);
166 }
167 
168 static int
169 cmd_command_prompt_callback(struct client *c, void *data, const char *s,
170     int done)
171 {
172 	struct cmd_command_prompt_cdata		 *cdata = data;
173 	char					 *error;
174 	struct cmdq_item			 *item = cdata->item, *new_item;
175 	struct cmd_list				 *cmdlist;
176 	struct cmd_command_prompt_prompt	 *prompt;
177 	int					  argc = 0;
178 	char					**argv = NULL;
179 
180 	if (s == NULL)
181 		goto out;
182 	if (done) {
183 		if (cdata->flags & PROMPT_INCREMENTAL)
184 			goto out;
185 
186 		cmd_append_argv(&cdata->argc, &cdata->argv, s);
187 		if (++cdata->current != cdata->count) {
188 			prompt = &cdata->prompts[cdata->current];
189 			status_prompt_update(c, prompt->prompt, prompt->input);
190 			return (1);
191 		}
192 	}
193 
194 	argc = cdata->argc;
195 	argv = cmd_copy_argv(cdata->argc, cdata->argv);
196 	cmd_append_argv(&argc, &argv, s);
197 	if (done) {
198 		cdata->argc = argc;
199 		cdata->argv = cmd_copy_argv(argc, argv);
200 	}
201 
202 	cmdlist = args_make_commands(cdata->state, argc, argv, &error);
203 	if (cmdlist == NULL) {
204 		cmdq_append(c, cmdq_get_error(error));
205 		free(error);
206 	} else if (item == NULL) {
207 		new_item = cmdq_get_command(cmdlist, NULL);
208 		cmdq_append(c, new_item);
209 	} else {
210 		new_item = cmdq_get_command(cmdlist, cmdq_get_state(item));
211 		cmdq_insert_after(item, new_item);
212 	}
213 	cmd_free_argv(argc, argv);
214 
215 	if (c->prompt_inputcb != cmd_command_prompt_callback)
216 		return (1);
217 
218 out:
219 	if (item != NULL)
220 		cmdq_continue(item);
221 	return (0);
222 }
223 
224 static void
225 cmd_command_prompt_free(void *data)
226 {
227 	struct cmd_command_prompt_cdata	*cdata = data;
228 	u_int				 i;
229 
230 	for (i = 0; i < cdata->count; i++) {
231 		free(cdata->prompts[i].prompt);
232 		free(cdata->prompts[i].input);
233 	}
234 	free(cdata->prompts);
235 	cmd_free_argv(cdata->argc, cdata->argv);
236 	args_make_commands_free(cdata->state);
237 	free(cdata);
238 }
239