cmd-set-option.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2007 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 <stdlib.h>
  22 #include <string.h>
  23
  24 #include "tmux.h"
  25
  26 /*
  27  * Set an option.
  28  */
  29
  30 static enum args_parse_type     cmd_set_option_args_parse(struct args *,
  31                                     u_int, char **);
  32 static enum cmd_retval          cmd_set_option_exec(struct cmd *,
  33                                     struct cmdq_item *);
  34
  35 const struct cmd_entry cmd_set_option_entry = {
  36         .name = "set-option",
  37         .alias = "set",
  38
  39         .args = { "aFgopqst:uUw", 1, 2, cmd_set_option_args_parse },
  40         .usage = "[-aFgopqsuUw] " CMD_TARGET_PANE_USAGE " option [value]",
  41
  42         .target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },
  43
  44         .flags = CMD_AFTERHOOK,
  45         .exec = cmd_set_option_exec
  46 };
  47
  48 const struct cmd_entry cmd_set_window_option_entry = {
  49         .name = "set-window-option",
  50         .alias = "setw",
  51
  52         .args = { "aFgoqt:u", 1, 2, cmd_set_option_args_parse },
  53         .usage = "[-aFgoqu] " CMD_TARGET_WINDOW_USAGE " option [value]",
  54
  55         .target = { 't', CMD_FIND_WINDOW, CMD_FIND_CANFAIL },
  56
  57         .flags = CMD_AFTERHOOK,
  58         .exec = cmd_set_option_exec
  59 };
  60
  61 const struct cmd_entry cmd_set_hook_entry = {
  62         .name = "set-hook",
  63         .alias = NULL,
  64
  65         .args = { "agpRt:uw", 1, 2, cmd_set_option_args_parse },
  66         .usage = "[-agpRuw] " CMD_TARGET_PANE_USAGE " hook [command]",
  67
  68         .target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },
  69
  70         .flags = CMD_AFTERHOOK,
  71         .exec = cmd_set_option_exec
  72 };
  73
  74 static enum args_parse_type
  75 cmd_set_option_args_parse(__unused struct args *args, u_int idx,
  76     __unused char **cause)
  77 {
  78         if (idx == 1)
  79                 return (ARGS_PARSE_COMMANDS_OR_STRING);
  80         return (ARGS_PARSE_STRING);
  81 }
  82
  83 static enum cmd_retval
  84 cmd_set_option_exec(struct cmd *self, struct cmdq_item *item)
  85 {
  86         struct args                     *args = cmd_get_args(self);
  87         int                              append = args_has(args, 'a');
  88         struct cmd_find_state           *target = cmdq_get_target(item);
  89         struct window_pane              *loop;
  90         struct options                  *oo;
  91         struct options_entry            *parent, *o, *po;
  92         char                            *name, *argument, *expanded = NULL;
  93         char                            *cause;
  94         const char                      *value;
  95         int                              window, idx, already, error, ambiguous;
  96         int                              scope;
  97
  98         window = (cmd_get_entry(self) == &cmd_set_window_option_entry);
  99
 100         /* Expand argument. */
 101         argument = format_single_from_target(item, args_string(args, 0));
 102
 103         /* If set-hook -R, fire the hook straight away. */
 104         if (cmd_get_entry(self) == &cmd_set_hook_entry && args_has(args, 'R')) {
 105                 notify_hook(item, argument);
 106                 free(argument);
 107                 return (CMD_RETURN_NORMAL);
 108         }
 109
 110         /* Parse option name and index. */
 111         name = options_match(argument, &idx, &ambiguous);
 112         if (name == NULL) {
 113                 if (args_has(args, 'q'))
 114                         goto out;
 115                 if (ambiguous)
 116                         cmdq_error(item, "ambiguous option: %s", argument);
 117                 else
 118                         cmdq_error(item, "invalid option: %s", argument);
 119                 goto fail;
 120         }
 121         if (args_count(args) < 2)
 122                 value = NULL;
 123         else
 124                 value = args_string(args, 1);
 125         if (value != NULL && args_has(args, 'F')) {
 126                 expanded = format_single_from_target(item, value);
 127                 value = expanded;
 128         }
 129
 130         /* Get the scope and table for the option .*/
 131         scope = options_scope_from_name(args, window, name, target, &oo,
 132             &cause);
 133         if (scope == OPTIONS_TABLE_NONE) {
 134                 if (args_has(args, 'q'))
 135                         goto out;
 136                 cmdq_error(item, "%s", cause);
 137                 free(cause);
 138                 goto fail;
 139         }
 140         o = options_get_only(oo, name);
 141         parent = options_get(oo, name);
 142
 143         /* Check that array options and indexes match up. */
 144         if (idx != -1 && (*name == '@' || !options_is_array(parent))) {
 145                 cmdq_error(item, "not an array: %s", argument);
 146                 goto fail;
 147         }
 148
 149         /* With -o, check this option is not already set. */
 150         if (!args_has(args, 'u') && args_has(args, 'o')) {
 151                 if (idx == -1)
 152                         already = (o != NULL);
 153                 else {
 154                         if (o == NULL)
 155                                 already = 0;
 156                         else
 157                                 already = (options_array_get(o, idx) != NULL);
 158                 }
 159                 if (already) {
 160                         if (args_has(args, 'q'))
 161                                 goto out;
 162                         cmdq_error(item, "already set: %s", argument);
 163                         goto fail;
 164                 }
 165         }
 166
 167         /* Change the option. */
 168         if (args_has(args, 'U') && scope == OPTIONS_TABLE_WINDOW) {
 169                 TAILQ_FOREACH(loop, &target->w->panes, entry) {
 170                         po = options_get_only(loop->options, name);
 171                         if (po == NULL)
 172                                 continue;
 173                         if (options_remove_or_default(po, idx, &cause) != 0) {
 174                                 cmdq_error(item, "%s", cause);
 175                                 free(cause);
 176                                 goto fail;
 177                         }
 178                 }
 179         }
 180         if (args_has(args, 'u') || args_has(args, 'U')) {
 181                 if (o == NULL)
 182                         goto out;
 183                 if (options_remove_or_default(o, idx, &cause) != 0) {
 184                         cmdq_error(item, "%s", cause);
 185                         free(cause);
 186                         goto fail;
 187                 }
 188         } else if (*name == '@') {
 189                 if (value == NULL) {
 190                         cmdq_error(item, "empty value");
 191                         goto fail;
 192                 }
 193                 options_set_string(oo, name, append, "%s", value);
 194         } else if (idx == -1 && !options_is_array(parent)) {
 195                 error = options_from_string(oo, options_table_entry(parent),
 196                     options_table_entry(parent)->name, value,
 197                     args_has(args, 'a'), &cause);
 198                 if (error != 0) {
 199                         cmdq_error(item, "%s", cause);
 200                         free(cause);
 201                         goto fail;
 202                 }
 203         } else {
 204                 if (value == NULL) {
 205                         cmdq_error(item, "empty value");
 206                         goto fail;
 207                 }
 208                 if (o == NULL)
 209                         o = options_empty(oo, options_table_entry(parent));
 210                 if (idx == -1) {
 211                         if (!append)
 212                                 options_array_clear(o);
 213                         if (options_array_assign(o, value, &cause) != 0) {
 214                                 cmdq_error(item, "%s", cause);
 215                                 free(cause);
 216                                 goto fail;
 217                         }
 218                 } else if (options_array_set(o, idx, value, append,
 219                     &cause) != 0) {
 220                         cmdq_error(item, "%s", cause);
 221                         free(cause);
 222                         goto fail;
 223                 }
 224         }
 225
 226         options_push_changes(name);
 227
 228 out:
 229         free(argument);
 230         free(expanded);
 231         free(name);
 232         return (CMD_RETURN_NORMAL);
 233
 234 fail:
 235         free(argument);
 236         free(expanded);
 237         free(name);
 238         return (CMD_RETURN_ERROR);
 239 }