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      1 /* $OpenBSD$ */
      2 
      3 /*
      4  * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott (at) 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 = { "1bFkliI:Np:t:T:", 0, 1, cmd_command_prompt_args_parse },
     46 	.usage = "[-1bFkliN] [-I inputs] [-p prompts] " CMD_TARGET_CLIENT_USAGE
     47 		 " [-T prompt-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 	if (args_has(args, 'l')) {
    121 		cdata->prompts = xcalloc(1, sizeof *cdata->prompts);
    122 		cdata->prompts[0].prompt = prompts;
    123 		cdata->prompts[0].input = inputs;
    124 		cdata->count = 1;
    125 	} else {
    126 		while ((prompt = strsep(&next_prompt, ",")) != NULL) {
    127 			cdata->prompts = xreallocarray(cdata->prompts,
    128 			    cdata->count + 1, sizeof *cdata->prompts);
    129 			if (!space)
    130 				tmp = xstrdup(prompt);
    131 			else
    132 				xasprintf(&tmp, "%s ", prompt);
    133 			cdata->prompts[cdata->count].prompt = tmp;
    134 
    135 			if (next_input != NULL) {
    136 				input = strsep(&next_input, ",");
    137 				if (input == NULL)
    138 					input = "";
    139 			} else
    140 				input = "";
    141 			cdata->prompts[cdata->count].input = xstrdup(input);
    142 			cdata->count++;
    143 		}
    144 		free(inputs);
    145 		free(prompts);
    146 	}
    147 
    148 	if ((type = args_get(args, 'T')) != NULL) {
    149 		cdata->prompt_type = status_prompt_type(type);
    150 		if (cdata->prompt_type == PROMPT_TYPE_INVALID) {
    151 			cmdq_error(item, "unknown type: %s", type);
    152 			cmd_command_prompt_free(cdata);
    153 			return (CMD_RETURN_ERROR);
    154 		}
    155 	} else
    156 		cdata->prompt_type = PROMPT_TYPE_COMMAND;
    157 
    158 	if (args_has(args, '1'))
    159 		cdata->flags |= PROMPT_SINGLE;
    160 	else if (args_has(args, 'N'))
    161 		cdata->flags |= PROMPT_NUMERIC;
    162 	else if (args_has(args, 'i'))
    163 		cdata->flags |= PROMPT_INCREMENTAL;
    164 	else if (args_has(args, 'k'))
    165 		cdata->flags |= PROMPT_KEY;
    166 	status_prompt_set(tc, target, cdata->prompts[0].prompt,
    167 	    cdata->prompts[0].input, cmd_command_prompt_callback,
    168 	    cmd_command_prompt_free, cdata, cdata->flags, cdata->prompt_type);
    169 
    170 	if (!wait)
    171 		return (CMD_RETURN_NORMAL);
    172 	return (CMD_RETURN_WAIT);
    173 }
    174 
    175 static int
    176 cmd_command_prompt_callback(struct client *c, void *data, const char *s,
    177     int done)
    178 {
    179 	struct cmd_command_prompt_cdata		 *cdata = data;
    180 	char					 *error;
    181 	struct cmdq_item			 *item = cdata->item, *new_item;
    182 	struct cmd_list				 *cmdlist;
    183 	struct cmd_command_prompt_prompt	 *prompt;
    184 	int					  argc = 0;
    185 	char					**argv = NULL;
    186 
    187 	if (s == NULL)
    188 		goto out;
    189 
    190 	if (done) {
    191 		if (cdata->flags & PROMPT_INCREMENTAL)
    192 			goto out;
    193 		cmd_append_argv(&cdata->argc, &cdata->argv, s);
    194 		if (++cdata->current != cdata->count) {
    195 			prompt = &cdata->prompts[cdata->current];
    196 			status_prompt_update(c, prompt->prompt, prompt->input);
    197 			return (1);
    198 		}
    199 	}
    200 
    201 	argc = cdata->argc;
    202 	argv = cmd_copy_argv(cdata->argc, cdata->argv);
    203 	if (!done)
    204 		cmd_append_argv(&argc, &argv, s);
    205 
    206 	if (done) {
    207 		cmd_free_argv(cdata->argc, cdata->argv);
    208 		cdata->argc = argc;
    209 		cdata->argv = cmd_copy_argv(argc, argv);
    210 	}
    211 
    212 	cmdlist = args_make_commands(cdata->state, argc, argv, &error);
    213 	if (cmdlist == NULL) {
    214 		cmdq_append(c, cmdq_get_error(error));
    215 		free(error);
    216 	} else if (item == NULL) {
    217 		new_item = cmdq_get_command(cmdlist, NULL);
    218 		cmdq_append(c, new_item);
    219 	} else {
    220 		new_item = cmdq_get_command(cmdlist, cmdq_get_state(item));
    221 		cmdq_insert_after(item, new_item);
    222 	}
    223 	cmd_free_argv(argc, argv);
    224 
    225 	if (c->prompt_inputcb != cmd_command_prompt_callback)
    226 		return (1);
    227 
    228 out:
    229 	if (item != NULL)
    230 		cmdq_continue(item);
    231 	return (0);
    232 }
    233 
    234 static void
    235 cmd_command_prompt_free(void *data)
    236 {
    237 	struct cmd_command_prompt_cdata	*cdata = data;
    238 	u_int				 i;
    239 
    240 	for (i = 0; i < cdata->count; i++) {
    241 		free(cdata->prompts[i].prompt);
    242 		free(cdata->prompts[i].input);
    243 	}
    244 	free(cdata->prompts);
    245 	cmd_free_argv(cdata->argc, cdata->argv);
    246 	args_make_commands_free(cdata->state);
    247 	free(cdata);
    248 }
    249