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Annotation of src/usr.bin/tmux/cmd-confirm-before.c, Revision 1.21

1.21    ! nicm        1: /* $OpenBSD: cmd-confirm-before.c,v 1.20 2013/10/10 12:00:19 nicm Exp $ */
1.1       nicm        2:
                      3: /*
                      4:  * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
                      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 <ctype.h>
1.13      nicm       20: #include <stdlib.h>
1.1       nicm       21: #include <string.h>
                     22:
                     23: #include "tmux.h"
                     24:
                     25: /*
                     26:  * Asks for confirmation before executing a command.
                     27:  */
                     28:
1.19      nicm       29: enum cmd_retval         cmd_confirm_before_exec(struct cmd *, struct cmd_q *);
1.1       nicm       30:
1.14      nicm       31: int             cmd_confirm_before_callback(void *, const char *);
                     32: void            cmd_confirm_before_free(void *);
1.1       nicm       33:
                     34: const struct cmd_entry cmd_confirm_before_entry = {
                     35:        "confirm-before", "confirm",
1.12      nicm       36:        "p:t:", 1, 1,
                     37:        "[-p prompt] " CMD_TARGET_CLIENT_USAGE " command",
1.10      nicm       38:        0,
                     39:        cmd_confirm_before_exec
1.1       nicm       40: };
                     41:
1.4       nicm       42: struct cmd_confirm_before_data {
                     43:        char            *cmd;
1.19      nicm       44:        struct client   *client;
1.4       nicm       45: };
1.1       nicm       46:
1.14      nicm       47: enum cmd_retval
1.19      nicm       48: cmd_confirm_before_exec(struct cmd *self, struct cmd_q *cmdq)
1.1       nicm       49: {
1.10      nicm       50:        struct args                     *args = self->args;
1.1       nicm       51:        struct cmd_confirm_before_data  *cdata;
                     52:        struct client                   *c;
1.12      nicm       53:        char                            *cmd, *copy, *new_prompt, *ptr;
                     54:        const char                      *prompt;
1.1       nicm       55:
1.19      nicm       56:        if ((c = cmd_find_client(cmdq, args_get(args, 't'), 0)) == NULL)
1.14      nicm       57:                return (CMD_RETURN_ERROR);
1.1       nicm       58:
1.12      nicm       59:        if ((prompt = args_get(args, 'p')) != NULL)
                     60:                xasprintf(&new_prompt, "%s ", prompt);
                     61:        else {
                     62:                ptr = copy = xstrdup(args->argv[0]);
                     63:                cmd = strsep(&ptr, " \t");
                     64:                xasprintf(&new_prompt, "Confirm '%s'? (y/n) ", cmd);
1.13      nicm       65:                free(copy);
1.12      nicm       66:        }
1.1       nicm       67:
                     68:        cdata = xmalloc(sizeof *cdata);
1.10      nicm       69:        cdata->cmd = xstrdup(args->argv[0]);
1.19      nicm       70:
                     71:        cdata->client = c;
                     72:        cdata->client->references++;
                     73:
                     74:        status_prompt_set(c, new_prompt, NULL,
1.12      nicm       75:            cmd_confirm_before_callback, cmd_confirm_before_free, cdata,
                     76:            PROMPT_SINGLE);
1.1       nicm       77:
1.13      nicm       78:        free(new_prompt);
1.19      nicm       79:        return (CMD_RETURN_NORMAL);
1.1       nicm       80: }
                     81:
                     82: int
                     83: cmd_confirm_before_callback(void *data, const char *s)
                     84: {
                     85:        struct cmd_confirm_before_data  *cdata = data;
1.19      nicm       86:        struct client                   *c = cdata->client;
1.1       nicm       87:        struct cmd_list                 *cmdlist;
                     88:        char                            *cause;
                     89:
1.19      nicm       90:        if (c->flags & CLIENT_DEAD)
                     91:                return (0);
                     92:
1.7       nicm       93:        if (s == NULL || *s == '\0')
                     94:                return (0);
                     95:        if (tolower((u_char) s[0]) != 'y' || s[1] != '\0')
1.4       nicm       96:                return (0);
1.1       nicm       97:
1.19      nicm       98:        if (cmd_string_parse(cdata->cmd, &cmdlist, NULL, 0, &cause) != 0) {
1.1       nicm       99:                if (cause != NULL) {
1.19      nicm      100:                        cmdq_error(c->cmdq, "%s", cause);
1.13      nicm      101:                        free(cause);
1.1       nicm      102:                }
1.4       nicm      103:                return (0);
1.1       nicm      104:        }
                    105:
1.19      nicm      106:        cmdq_run(c->cmdq, cmdlist);
1.1       nicm      107:        cmd_list_free(cmdlist);
                    108:
1.4       nicm      109:        return (0);
                    110: }
                    111:
                    112: void
                    113: cmd_confirm_before_free(void *data)
                    114: {
                    115:        struct cmd_confirm_before_data  *cdata = data;
1.19      nicm      116:        struct client                   *c = cdata->client;
                    117:
                    118:        c->references--;
1.4       nicm      119:
1.13      nicm      120:        free(cdata->cmd);
                    121:        free(cdata);
1.1       nicm      122: }