xref: /openbsd-src/usr.bin/tmux/cmd-command-prompt.c (revision 46035553bfdd96e63c94e32da0210227ec2e3cf1)
1 /* $OpenBSD: cmd-command-prompt.c,v 1.53 2020/05/16 16:16:07 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 cmd_retval	cmd_command_prompt_exec(struct cmd *,
33 			    struct cmdq_item *);
34 
35 static int	cmd_command_prompt_callback(struct client *, void *,
36 		    const char *, int);
37 static void	cmd_command_prompt_free(void *);
38 
39 const struct cmd_entry cmd_command_prompt_entry = {
40 	.name = "command-prompt",
41 	.alias = NULL,
42 
43 	.args = { "1kiI:Np:Tt:W", 0, 1 },
44 	.usage = "[-1kiNTW] [-I inputs] [-p prompts] " CMD_TARGET_CLIENT_USAGE " "
45 		 "[template]",
46 
47 	.flags = CMD_CLIENT_TFLAG,
48 	.exec = cmd_command_prompt_exec
49 };
50 
51 struct cmd_command_prompt_cdata {
52 	int	 flags;
53 
54 	char	*inputs;
55 	char	*next_input;
56 
57 	char	*prompts;
58 	char	*next_prompt;
59 
60 	char	*template;
61 	int	 idx;
62 };
63 
64 static enum cmd_retval
65 cmd_command_prompt_exec(struct cmd *self, struct cmdq_item *item)
66 {
67 	struct args			*args = cmd_get_args(self);
68 	struct client			*tc = cmdq_get_target_client(item);
69 	struct cmd_find_state		*target = cmdq_get_target(item);
70 	const char			*inputs, *prompts;
71 	struct cmd_command_prompt_cdata	*cdata;
72 	char				*prompt, *ptr, *input = NULL;
73 	size_t				 n;
74 
75 	if (tc->prompt_string != NULL)
76 		return (CMD_RETURN_NORMAL);
77 
78 	cdata = xcalloc(1, sizeof *cdata);
79 
80 	cdata->inputs = NULL;
81 	cdata->next_input = NULL;
82 
83 	cdata->prompts = NULL;
84 	cdata->next_prompt = NULL;
85 
86 	cdata->template = NULL;
87 	cdata->idx = 1;
88 
89 	if (args->argc != 0)
90 		cdata->template = xstrdup(args->argv[0]);
91 	else
92 		cdata->template = xstrdup("%1");
93 
94 	if ((prompts = args_get(args, 'p')) != NULL)
95 		cdata->prompts = xstrdup(prompts);
96 	else if (args->argc != 0) {
97 		n = strcspn(cdata->template, " ,");
98 		xasprintf(&cdata->prompts, "(%.*s) ", (int) n, cdata->template);
99 	} else
100 		cdata->prompts = xstrdup(":");
101 
102 	/* Get first prompt. */
103 	cdata->next_prompt = cdata->prompts;
104 	ptr = strsep(&cdata->next_prompt, ",");
105 	if (prompts == NULL)
106 		prompt = xstrdup(ptr);
107 	else
108 		xasprintf(&prompt, "%s ", ptr);
109 
110 	/* Get initial prompt input. */
111 	if ((inputs = args_get(args, 'I')) != NULL) {
112 		cdata->inputs = xstrdup(inputs);
113 		cdata->next_input = cdata->inputs;
114 		input = strsep(&cdata->next_input, ",");
115 	}
116 
117 	if (args_has(args, '1'))
118 		cdata->flags |= PROMPT_SINGLE;
119 	else if (args_has(args, 'N'))
120 		cdata->flags |= PROMPT_NUMERIC;
121 	else if (args_has(args, 'i'))
122 		cdata->flags |= PROMPT_INCREMENTAL;
123 	else if (args_has(args, 'k'))
124 		cdata->flags |= PROMPT_KEY;
125 	else if (args_has(args, 'W'))
126 		cdata->flags |= PROMPT_WINDOW;
127 	else if (args_has(args, 'T'))
128 		cdata->flags |= PROMPT_TARGET;
129 	status_prompt_set(tc, target, prompt, input,
130 	    cmd_command_prompt_callback, cmd_command_prompt_free, cdata,
131 	    cdata->flags);
132 	free(prompt);
133 
134 	return (CMD_RETURN_NORMAL);
135 }
136 
137 static int
138 cmd_command_prompt_callback(struct client *c, void *data, const char *s,
139     int done)
140 {
141 	struct cmd_command_prompt_cdata	*cdata = data;
142 	char				*new_template, *prompt, *ptr, *error;
143 	char				*input = NULL;
144 	enum cmd_parse_status		 status;
145 
146 	if (s == NULL)
147 		return (0);
148 	if (done && (cdata->flags & PROMPT_INCREMENTAL))
149 		return (0);
150 
151 	new_template = cmd_template_replace(cdata->template, s, cdata->idx);
152 	if (done) {
153 		free(cdata->template);
154 		cdata->template = new_template;
155 	}
156 
157 	/*
158 	 * Check if there are more prompts; if so, get its respective input
159 	 * and update the prompt data.
160 	 */
161 	if (done && (ptr = strsep(&cdata->next_prompt, ",")) != NULL) {
162 		xasprintf(&prompt, "%s ", ptr);
163 		input = strsep(&cdata->next_input, ",");
164 		status_prompt_update(c, prompt, input);
165 
166 		free(prompt);
167 		cdata->idx++;
168 		return (1);
169 	}
170 
171 	status = cmd_parse_and_append(new_template, NULL, c, NULL, &error);
172 	if (status == CMD_PARSE_ERROR) {
173 		cmdq_append(c, cmdq_get_error(error));
174 		free(error);
175 	}
176 
177 	if (!done)
178 		free(new_template);
179 	if (c->prompt_inputcb != cmd_command_prompt_callback)
180 		return (1);
181 	return (0);
182 }
183 
184 static void
185 cmd_command_prompt_free(void *data)
186 {
187 	struct cmd_command_prompt_cdata	*cdata = data;
188 
189 	free(cdata->inputs);
190 	free(cdata->prompts);
191 	free(cdata->template);
192 	free(cdata);
193 }
194