Annotation of src/usr.bin/tmux/cmd-if-shell.c, Revision 1.20
1.20 ! nicm 1: /* $OpenBSD: cmd-if-shell.c,v 1.19 2013/03/24 09:33:35 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
1.5 nicm 5: * Copyright (c) 2009 Nicholas Marriott <nicm@openbsd.org>
1.1 nicm 6: *
7: * Permission to use, copy, modify, and distribute this software for any
8: * purpose with or without fee is hereby granted, provided that the above
9: * copyright notice and this permission notice appear in all copies.
10: *
11: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
16: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
17: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18: */
19:
20: #include <sys/types.h>
1.5 nicm 21: #include <sys/wait.h>
1.1 nicm 22:
1.15 nicm 23: #include <stdlib.h>
1.1 nicm 24: #include <string.h>
25:
26: #include "tmux.h"
27:
28: /*
1.14 nicm 29: * Executes a tmux command if a shell command returns true or false.
1.1 nicm 30: */
31:
1.20 ! nicm 32: enum cmd_retval cmd_if_shell_exec(struct cmd *, struct cmd_q *);
1.1 nicm 33:
1.5 nicm 34: void cmd_if_shell_callback(struct job *);
1.20 ! nicm 35: void cmd_if_shell_done(struct cmd_q *);
1.5 nicm 36: void cmd_if_shell_free(void *);
1.1 nicm 37:
38: const struct cmd_entry cmd_if_shell_entry = {
39: "if-shell", "if",
1.20 ! nicm 40: "bt:", 2, 3,
! 41: "[-b] " CMD_TARGET_PANE_USAGE " shell-command command [command]",
1.10 nicm 42: 0,
43: NULL,
1.14 nicm 44: NULL,
1.10 nicm 45: cmd_if_shell_exec
1.1 nicm 46: };
47:
1.5 nicm 48: struct cmd_if_shell_data {
1.13 nicm 49: char *cmd_if;
50: char *cmd_else;
1.20 ! nicm 51: struct cmd_q *cmdq;
! 52: int bflag;
! 53: int started;
1.5 nicm 54: };
1.1 nicm 55:
1.16 nicm 56: enum cmd_retval
1.20 ! nicm 57: cmd_if_shell_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 58: {
1.10 nicm 59: struct args *args = self->args;
1.5 nicm 60: struct cmd_if_shell_data *cdata;
1.19 nicm 61: char *shellcmd;
62: struct session *s;
63: struct winlink *wl;
64: struct window_pane *wp;
65: struct format_tree *ft;
66:
1.20 ! nicm 67: wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp);
1.19 nicm 68: if (wl == NULL)
69: return (CMD_RETURN_ERROR);
70:
71: ft = format_create();
72: format_session(ft, s);
73: format_winlink(ft, s, wl);
74: format_window_pane(ft, wp);
75: shellcmd = format_expand(ft, args->argv[0]);
76: format_free(ft);
1.5 nicm 77:
78: cdata = xmalloc(sizeof *cdata);
1.13 nicm 79: cdata->cmd_if = xstrdup(args->argv[1]);
1.14 nicm 80: if (args->argc == 3)
81: cdata->cmd_else = xstrdup(args->argv[2]);
1.13 nicm 82: else
83: cdata->cmd_else = NULL;
1.20 ! nicm 84: cdata->bflag = args_has(args, 'b');
1.5 nicm 85:
1.20 ! nicm 86: cdata->started = 0;
! 87: cdata->cmdq = cmdq;
! 88: cmdq->references++;
1.5 nicm 89:
1.11 nicm 90: job_run(shellcmd, cmd_if_shell_callback, cmd_if_shell_free, cdata);
1.19 nicm 91: free(shellcmd);
1.1 nicm 92:
1.20 ! nicm 93: if (cdata->bflag)
! 94: return (CMD_RETURN_NORMAL);
! 95: return (CMD_RETURN_WAIT);
1.1 nicm 96: }
97:
1.5 nicm 98: void
99: cmd_if_shell_callback(struct job *job)
1.1 nicm 100: {
1.5 nicm 101: struct cmd_if_shell_data *cdata = job->data;
1.20 ! nicm 102: struct cmd_q *cmdq = cdata->cmdq, *cmdq1;
1.1 nicm 103: struct cmd_list *cmdlist;
1.14 nicm 104: char *cause, *cmd;
1.1 nicm 105:
1.20 ! nicm 106: if (cmdq->dead)
! 107: return;
! 108:
! 109: if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0)
1.13 nicm 110: cmd = cdata->cmd_else;
1.20 ! nicm 111: else
1.13 nicm 112: cmd = cdata->cmd_if;
1.20 ! nicm 113: if (cmd == NULL)
! 114: return;
! 115:
! 116: if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
1.1 nicm 117: if (cause != NULL) {
1.20 ! nicm 118: cmdq_error(cmdq, "%s", cause);
1.15 nicm 119: free(cause);
1.1 nicm 120: }
1.5 nicm 121: return;
1.1 nicm 122: }
123:
1.20 ! nicm 124: cdata->started = 1;
! 125:
! 126: cmdq1 = cmdq_new(cmdq->client);
! 127: cmdq1->emptyfn = cmd_if_shell_done;
! 128: cmdq1->data = cdata;
! 129:
! 130: cmdq_run(cmdq1, cmdlist);
1.1 nicm 131: cmd_list_free(cmdlist);
132: }
133:
134: void
1.20 ! nicm 135: cmd_if_shell_done(struct cmd_q *cmdq1)
! 136: {
! 137: struct cmd_if_shell_data *cdata = cmdq1->data;
! 138: struct cmd_q *cmdq = cdata->cmdq;
! 139:
! 140: if (!cmdq_free(cmdq) && !cdata->bflag)
! 141: cmdq_continue(cmdq);
! 142:
! 143: cmdq_free(cmdq1);
! 144:
! 145: free(cdata->cmd_else);
! 146: free(cdata->cmd_if);
! 147: free(cdata);
! 148: }
! 149:
! 150: void
1.5 nicm 151: cmd_if_shell_free(void *data)
1.1 nicm 152: {
1.5 nicm 153: struct cmd_if_shell_data *cdata = data;
1.20 ! nicm 154: struct cmd_q *cmdq = cdata->cmdq;
! 155:
! 156: if (cdata->started)
! 157: return;
1.1 nicm 158:
1.20 ! nicm 159: if (!cmdq_free(cmdq) && !cdata->bflag)
! 160: cmdq_continue(cmdq);
1.1 nicm 161:
1.15 nicm 162: free(cdata->cmd_else);
163: free(cdata->cmd_if);
164: free(cdata);
1.1 nicm 165: }
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