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Annotation of src/usr.bin/tmux/cmd-confirm-before.c, Revision 1.23

1.23    ! nicm        1: /* $OpenBSD: cmd-confirm-before.c,v 1.22 2014/10/20 23:27:14 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:  */
1.22      nicm       18:
                     19: #include <sys/types.h>
1.1       nicm       20:
                     21: #include <ctype.h>
1.13      nicm       22: #include <stdlib.h>
1.1       nicm       23: #include <string.h>
                     24:
                     25: #include "tmux.h"
                     26:
                     27: /*
                     28:  * Asks for confirmation before executing a command.
                     29:  */
                     30:
1.19      nicm       31: enum cmd_retval         cmd_confirm_before_exec(struct cmd *, struct cmd_q *);
1.1       nicm       32:
1.14      nicm       33: int             cmd_confirm_before_callback(void *, const char *);
                     34: void            cmd_confirm_before_free(void *);
1.1       nicm       35:
                     36: const struct cmd_entry cmd_confirm_before_entry = {
                     37:        "confirm-before", "confirm",
1.12      nicm       38:        "p:t:", 1, 1,
                     39:        "[-p prompt] " CMD_TARGET_CLIENT_USAGE " command",
1.10      nicm       40:        0,
                     41:        cmd_confirm_before_exec
1.1       nicm       42: };
                     43:
1.4       nicm       44: struct cmd_confirm_before_data {
                     45:        char            *cmd;
1.19      nicm       46:        struct client   *client;
1.4       nicm       47: };
1.1       nicm       48:
1.14      nicm       49: enum cmd_retval
1.19      nicm       50: cmd_confirm_before_exec(struct cmd *self, struct cmd_q *cmdq)
1.1       nicm       51: {
1.10      nicm       52:        struct args                     *args = self->args;
1.1       nicm       53:        struct cmd_confirm_before_data  *cdata;
                     54:        struct client                   *c;
1.12      nicm       55:        char                            *cmd, *copy, *new_prompt, *ptr;
                     56:        const char                      *prompt;
1.1       nicm       57:
1.19      nicm       58:        if ((c = cmd_find_client(cmdq, args_get(args, 't'), 0)) == NULL)
1.14      nicm       59:                return (CMD_RETURN_ERROR);
1.1       nicm       60:
1.12      nicm       61:        if ((prompt = args_get(args, 'p')) != NULL)
                     62:                xasprintf(&new_prompt, "%s ", prompt);
                     63:        else {
                     64:                ptr = copy = xstrdup(args->argv[0]);
                     65:                cmd = strsep(&ptr, " \t");
                     66:                xasprintf(&new_prompt, "Confirm '%s'? (y/n) ", cmd);
1.13      nicm       67:                free(copy);
1.12      nicm       68:        }
1.1       nicm       69:
                     70:        cdata = xmalloc(sizeof *cdata);
1.10      nicm       71:        cdata->cmd = xstrdup(args->argv[0]);
1.19      nicm       72:
                     73:        cdata->client = c;
                     74:        cdata->client->references++;
                     75:
                     76:        status_prompt_set(c, new_prompt, NULL,
1.12      nicm       77:            cmd_confirm_before_callback, cmd_confirm_before_free, cdata,
                     78:            PROMPT_SINGLE);
1.1       nicm       79:
1.13      nicm       80:        free(new_prompt);
1.19      nicm       81:        return (CMD_RETURN_NORMAL);
1.1       nicm       82: }
                     83:
                     84: int
                     85: cmd_confirm_before_callback(void *data, const char *s)
                     86: {
                     87:        struct cmd_confirm_before_data  *cdata = data;
1.19      nicm       88:        struct client                   *c = cdata->client;
1.1       nicm       89:        struct cmd_list                 *cmdlist;
                     90:        char                            *cause;
                     91:
1.19      nicm       92:        if (c->flags & CLIENT_DEAD)
                     93:                return (0);
                     94:
1.7       nicm       95:        if (s == NULL || *s == '\0')
                     96:                return (0);
                     97:        if (tolower((u_char) s[0]) != 'y' || s[1] != '\0')
1.4       nicm       98:                return (0);
1.1       nicm       99:
1.19      nicm      100:        if (cmd_string_parse(cdata->cmd, &cmdlist, NULL, 0, &cause) != 0) {
1.1       nicm      101:                if (cause != NULL) {
1.19      nicm      102:                        cmdq_error(c->cmdq, "%s", cause);
1.13      nicm      103:                        free(cause);
1.1       nicm      104:                }
1.4       nicm      105:                return (0);
1.1       nicm      106:        }
                    107:
1.23    ! nicm      108:        cmdq_run(c->cmdq, cmdlist, NULL);
1.1       nicm      109:        cmd_list_free(cmdlist);
                    110:
1.4       nicm      111:        return (0);
                    112: }
                    113:
                    114: void
                    115: cmd_confirm_before_free(void *data)
                    116: {
                    117:        struct cmd_confirm_before_data  *cdata = data;
1.19      nicm      118:        struct client                   *c = cdata->client;
                    119:
                    120:        c->references--;
1.4       nicm      121:
1.13      nicm      122:        free(cdata->cmd);
                    123:        free(cdata);
1.1       nicm      124: }