cmd-command-prompt.c

   1 /* $OpenBSD$ */
   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 = { "1bFkiI:Np:t:T:", 0, 1, NULL },
  44         .usage = "[-1bFkiN] [-I inputs] [-p prompts] " CMD_TARGET_CLIENT_USAGE
  45                  " [-T type] [template]",
  46
  47         .flags = CMD_CLIENT_TFLAG,
  48         .exec = cmd_command_prompt_exec
  49 };
  50
  51 struct cmd_command_prompt_cdata {
  52         struct cmdq_item        *item;
  53         struct cmd_parse_input   pi;
  54
  55         int                      flags;
  56         enum prompt_type         prompt_type;
  57
  58         char                    *inputs;
  59         char                    *next_input;
  60
  61         char                    *prompts;
  62         char                    *next_prompt;
  63
  64         char                    *template;
  65         int                      idx;
  66 };
  67
  68 static enum cmd_retval
  69 cmd_command_prompt_exec(struct cmd *self, struct cmdq_item *item)
  70 {
  71         struct args                     *args = cmd_get_args(self);
  72         struct client                   *tc = cmdq_get_target_client(item);
  73         struct cmd_find_state           *target = cmdq_get_target(item);
  74         const char                      *inputs, *prompts, *type, *s;
  75         struct cmd_command_prompt_cdata *cdata;
  76         char                            *prompt, *comma, *input = NULL;
  77         u_int                            count = args_count(args);
  78         size_t                           n;
  79         int                              wait = !args_has(args, 'b');
  80
  81         if (tc->prompt_string != NULL)
  82                 return (CMD_RETURN_NORMAL);
  83         if (args_has(args, 'i'))
  84                 wait = 0;
  85
  86         cdata = xcalloc(1, sizeof *cdata);
  87         cdata->idx = 1;
  88
  89         cmd_get_source(self, &cdata->pi.file, &cdata->pi.line);
  90         if (wait)
  91                 cdata->pi.item = item;
  92         cdata->pi.c = tc;
  93         cmd_find_copy_state(&cdata->pi.fs, target);
  94
  95         if (wait)
  96                 cdata->item = item;
  97
  98         if (count != 0) {
  99                 s = args_string(args, 0);
 100                 if (args_has(args, 'F'))
 101                         cdata->template = format_single_from_target(item, s);
 102                 else
 103                         cdata->template = xstrdup(s);
 104         }  else
 105                 cdata->template = xstrdup("%1");
 106
 107         if ((prompts = args_get(args, 'p')) != NULL)
 108                 cdata->prompts = xstrdup(prompts);
 109         else if (count != 0) {
 110                 n = strcspn(cdata->template, " ,");
 111                 xasprintf(&cdata->prompts, "(%.*s) ", (int)n, cdata->template);
 112         } else
 113                 cdata->prompts = xstrdup(":");
 114
 115         /* Get first prompt. */
 116         cdata->next_prompt = cdata->prompts;
 117         comma = strsep(&cdata->next_prompt, ",");
 118         if (prompts == NULL)
 119                 prompt = xstrdup(comma);
 120         else
 121                 xasprintf(&prompt, "%s ", comma);
 122
 123         /* Get initial prompt input. */
 124         if ((inputs = args_get(args, 'I')) != NULL) {
 125                 cdata->inputs = xstrdup(inputs);
 126                 cdata->next_input = cdata->inputs;
 127                 input = strsep(&cdata->next_input, ",");
 128         }
 129
 130         /* Get prompt type. */
 131         if ((type = args_get(args, 'T')) != NULL) {
 132                 cdata->prompt_type = status_prompt_type(type);
 133                 if (cdata->prompt_type == PROMPT_TYPE_INVALID) {
 134                         cmdq_error(item, "unknown type: %s", type);
 135                         return (CMD_RETURN_ERROR);
 136                 }
 137         } else
 138                 cdata->prompt_type = PROMPT_TYPE_COMMAND;
 139
 140         if (args_has(args, '1'))
 141                 cdata->flags |= PROMPT_SINGLE;
 142         else if (args_has(args, 'N'))
 143                 cdata->flags |= PROMPT_NUMERIC;
 144         else if (args_has(args, 'i'))
 145                 cdata->flags |= PROMPT_INCREMENTAL;
 146         else if (args_has(args, 'k'))
 147                 cdata->flags |= PROMPT_KEY;
 148         status_prompt_set(tc, target, prompt, input,
 149             cmd_command_prompt_callback, cmd_command_prompt_free, cdata,
 150             cdata->flags, cdata->prompt_type);
 151         free(prompt);
 152
 153         if (!wait)
 154                 return (CMD_RETURN_NORMAL);
 155         return (CMD_RETURN_WAIT);
 156 }
 157
 158 static int
 159 cmd_command_prompt_callback(struct client *c, void *data, const char *s,
 160     int done)
 161 {
 162         struct cmd_command_prompt_cdata *cdata = data;
 163         char                            *new_template, *prompt, *comma, *error;
 164         char                            *input = NULL;
 165         struct cmdq_item                *item = cdata->item;
 166         enum cmd_parse_status            status;
 167
 168         if (s == NULL)
 169                 goto out;
 170         if (done && (cdata->flags & PROMPT_INCREMENTAL))
 171                 goto out;
 172
 173         new_template = cmd_template_replace(cdata->template, s, cdata->idx);
 174         if (done) {
 175                 free(cdata->template);
 176                 cdata->template = new_template;
 177         }
 178
 179         /*
 180          * Check if there are more prompts; if so, get its respective input
 181          * and update the prompt data.
 182          */
 183         if (done && (comma = strsep(&cdata->next_prompt, ",")) != NULL) {
 184                 xasprintf(&prompt, "%s ", comma);
 185                 input = strsep(&cdata->next_input, ",");
 186                 status_prompt_update(c, prompt, input);
 187
 188                 free(prompt);
 189                 cdata->idx++;
 190                 return (1);
 191         }
 192
 193         if (item != NULL) {
 194                 status = cmd_parse_and_insert(new_template, &cdata->pi, item,
 195                     cmdq_get_state(item), &error);
 196         } else {
 197                 status = cmd_parse_and_append(new_template, &cdata->pi, c, NULL,
 198                     &error);
 199         }
 200         if (status == CMD_PARSE_ERROR) {
 201                 cmdq_append(c, cmdq_get_error(error));
 202                 free(error);
 203         }
 204
 205         if (!done)
 206                 free(new_template);
 207         if (c->prompt_inputcb != cmd_command_prompt_callback)
 208                 return (1);
 209
 210 out:
 211         if (item != NULL)
 212                 cmdq_continue(item);
 213         return (0);
 214 }
 215
 216 static void
 217 cmd_command_prompt_free(void *data)
 218 {
 219         struct cmd_command_prompt_cdata *cdata = data;
 220
 221         free(cdata->inputs);
 222         free(cdata->prompts);
 223         free(cdata->template);
 224         free(cdata);
 225 }