1 /* $OpenBSD: cmd-command-prompt.c,v 1.44 2017/05/17 15:20:23 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 = { "1iI:Np:t:", 0, 1 }, 44 .usage = "[-1Ni] [-I inputs] [-p prompts] " CMD_TARGET_CLIENT_USAGE " " 45 "[template]", 46 47 .flags = 0, 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 = self->args; 68 const char *inputs, *prompts; 69 struct cmd_command_prompt_cdata *cdata; 70 struct client *c; 71 char *prompt, *ptr, *input = NULL; 72 size_t n; 73 74 if ((c = cmd_find_client(item, args_get(args, 't'), 0)) == NULL) 75 return (CMD_RETURN_ERROR); 76 77 if (c->prompt_string != NULL) 78 return (CMD_RETURN_NORMAL); 79 80 cdata = xcalloc(1, sizeof *cdata); 81 82 cdata->inputs = NULL; 83 cdata->next_input = NULL; 84 85 cdata->prompts = NULL; 86 cdata->next_prompt = NULL; 87 88 cdata->template = NULL; 89 cdata->idx = 1; 90 91 if (args->argc != 0) 92 cdata->template = xstrdup(args->argv[0]); 93 else 94 cdata->template = xstrdup("%1"); 95 96 if ((prompts = args_get(args, 'p')) != NULL) 97 cdata->prompts = xstrdup(prompts); 98 else if (args->argc != 0) { 99 n = strcspn(cdata->template, " ,"); 100 xasprintf(&cdata->prompts, "(%.*s) ", (int) n, cdata->template); 101 } else 102 cdata->prompts = xstrdup(":"); 103 104 /* Get first prompt. */ 105 cdata->next_prompt = cdata->prompts; 106 ptr = strsep(&cdata->next_prompt, ","); 107 if (prompts == NULL) 108 prompt = xstrdup(ptr); 109 else 110 xasprintf(&prompt, "%s ", ptr); 111 112 /* Get initial prompt input. */ 113 if ((inputs = args_get(args, 'I')) != NULL) { 114 cdata->inputs = xstrdup(inputs); 115 cdata->next_input = cdata->inputs; 116 input = strsep(&cdata->next_input, ","); 117 } 118 119 if (args_has(args, '1')) 120 cdata->flags |= PROMPT_SINGLE; 121 else if (args_has(args, 'N')) 122 cdata->flags |= PROMPT_NUMERIC; 123 else if (args_has(args, 'i')) 124 cdata->flags |= PROMPT_INCREMENTAL; 125 status_prompt_set(c, prompt, input, cmd_command_prompt_callback, 126 cmd_command_prompt_free, cdata, cdata->flags); 127 free(prompt); 128 129 return (CMD_RETURN_NORMAL); 130 } 131 132 static enum cmd_retval 133 cmd_command_prompt_error(struct cmdq_item *item, void *data) 134 { 135 char *error = data; 136 137 cmdq_error(item, "%s", error); 138 free(error); 139 140 return (CMD_RETURN_NORMAL); 141 } 142 143 static int 144 cmd_command_prompt_callback(struct client *c, void *data, const char *s, 145 int done) 146 { 147 struct cmd_command_prompt_cdata *cdata = data; 148 struct cmd_list *cmdlist; 149 struct cmdq_item *new_item; 150 char *cause, *new_template, *prompt, *ptr; 151 char *input = NULL; 152 153 if (s == NULL) 154 return (0); 155 if (done && (cdata->flags & PROMPT_INCREMENTAL)) 156 return (0); 157 158 new_template = cmd_template_replace(cdata->template, s, cdata->idx); 159 if (done) { 160 free(cdata->template); 161 cdata->template = new_template; 162 } 163 164 /* 165 * Check if there are more prompts; if so, get its respective input 166 * and update the prompt data. 167 */ 168 if (done && (ptr = strsep(&cdata->next_prompt, ",")) != NULL) { 169 xasprintf(&prompt, "%s ", ptr); 170 input = strsep(&cdata->next_input, ","); 171 status_prompt_update(c, prompt, input); 172 173 free(prompt); 174 cdata->idx++; 175 return (1); 176 } 177 178 cmdlist = cmd_string_parse(new_template, NULL, 0, &cause); 179 if (cmdlist == NULL) { 180 if (cause != NULL) { 181 new_item = cmdq_get_callback(cmd_command_prompt_error, 182 cause); 183 } else 184 new_item = NULL; 185 } else { 186 new_item = cmdq_get_command(cmdlist, NULL, NULL, 0); 187 cmd_list_free(cmdlist); 188 } 189 190 if (new_item != NULL) 191 cmdq_append(c, new_item); 192 193 if (!done) 194 free(new_template); 195 if (c->prompt_inputcb != cmd_command_prompt_callback) 196 return (1); 197 return (0); 198 } 199 200 static void 201 cmd_command_prompt_free(void *data) 202 { 203 struct cmd_command_prompt_cdata *cdata = data; 204 205 free(cdata->inputs); 206 free(cdata->prompts); 207 free(cdata->template); 208 free(cdata); 209 } 210