Annotation of src/usr.bin/tmux/cmd-if-shell.c, Revision 1.25
1.25 ! nicm 1: /* $OpenBSD: cmd-if-shell.c,v 1.24 2013/10/10 12:00:19 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,
1.14 nicm 43: NULL,
1.10 nicm 44: cmd_if_shell_exec
1.1 nicm 45: };
46:
1.5 nicm 47: struct cmd_if_shell_data {
1.13 nicm 48: char *cmd_if;
49: char *cmd_else;
1.20 nicm 50: struct cmd_q *cmdq;
51: int bflag;
52: int started;
1.5 nicm 53: };
1.1 nicm 54:
1.16 nicm 55: enum cmd_retval
1.20 nicm 56: cmd_if_shell_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 57: {
1.10 nicm 58: struct args *args = self->args;
1.5 nicm 59: struct cmd_if_shell_data *cdata;
1.19 nicm 60: char *shellcmd;
1.23 nicm 61: struct client *c;
1.21 nicm 62: struct session *s = NULL;
63: struct winlink *wl = NULL;
64: struct window_pane *wp = NULL;
1.19 nicm 65: struct format_tree *ft;
66:
1.21 nicm 67: if (args_has(args, 't'))
68: wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp);
1.23 nicm 69: else {
70: c = cmd_find_client(cmdq, NULL, 1);
71: if (c != NULL && c->session != NULL) {
72: s = c->session;
73: wl = s->curw;
74: wp = wl->window->active;
75: }
76: }
1.19 nicm 77:
78: ft = format_create();
1.21 nicm 79: if (s != NULL)
80: format_session(ft, s);
81: if (s != NULL && wl != NULL)
82: format_winlink(ft, s, wl);
83: if (wp != NULL)
84: format_window_pane(ft, wp);
1.19 nicm 85: shellcmd = format_expand(ft, args->argv[0]);
86: format_free(ft);
1.5 nicm 87:
88: cdata = xmalloc(sizeof *cdata);
1.13 nicm 89: cdata->cmd_if = xstrdup(args->argv[1]);
1.14 nicm 90: if (args->argc == 3)
91: cdata->cmd_else = xstrdup(args->argv[2]);
1.13 nicm 92: else
93: cdata->cmd_else = NULL;
1.20 nicm 94: cdata->bflag = args_has(args, 'b');
1.5 nicm 95:
1.20 nicm 96: cdata->started = 0;
97: cdata->cmdq = cmdq;
98: cmdq->references++;
1.5 nicm 99:
1.22 nicm 100: job_run(shellcmd, s, cmd_if_shell_callback, cmd_if_shell_free, cdata);
1.19 nicm 101: free(shellcmd);
1.1 nicm 102:
1.20 nicm 103: if (cdata->bflag)
104: return (CMD_RETURN_NORMAL);
105: return (CMD_RETURN_WAIT);
1.1 nicm 106: }
107:
1.5 nicm 108: void
109: cmd_if_shell_callback(struct job *job)
1.1 nicm 110: {
1.5 nicm 111: struct cmd_if_shell_data *cdata = job->data;
1.20 nicm 112: struct cmd_q *cmdq = cdata->cmdq, *cmdq1;
1.1 nicm 113: struct cmd_list *cmdlist;
1.14 nicm 114: char *cause, *cmd;
1.1 nicm 115:
1.20 nicm 116: if (cmdq->dead)
117: return;
118:
119: if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0)
1.13 nicm 120: cmd = cdata->cmd_else;
1.20 nicm 121: else
1.13 nicm 122: cmd = cdata->cmd_if;
1.20 nicm 123: if (cmd == NULL)
124: return;
125:
126: if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
1.1 nicm 127: if (cause != NULL) {
1.20 nicm 128: cmdq_error(cmdq, "%s", cause);
1.15 nicm 129: free(cause);
1.1 nicm 130: }
1.5 nicm 131: return;
1.1 nicm 132: }
133:
1.20 nicm 134: cdata->started = 1;
135:
136: cmdq1 = cmdq_new(cmdq->client);
137: cmdq1->emptyfn = cmd_if_shell_done;
138: cmdq1->data = cdata;
139:
140: cmdq_run(cmdq1, cmdlist);
1.1 nicm 141: cmd_list_free(cmdlist);
142: }
143:
144: void
1.20 nicm 145: cmd_if_shell_done(struct cmd_q *cmdq1)
146: {
147: struct cmd_if_shell_data *cdata = cmdq1->data;
148: struct cmd_q *cmdq = cdata->cmdq;
1.25 ! nicm 149:
! 150: if (cmdq1->client_exit >= 0)
! 151: cmdq->client_exit = cmdq1->client_exit;
1.20 nicm 152:
153: if (!cmdq_free(cmdq) && !cdata->bflag)
154: cmdq_continue(cmdq);
155:
156: cmdq_free(cmdq1);
157:
158: free(cdata->cmd_else);
159: free(cdata->cmd_if);
160: free(cdata);
161: }
162:
163: void
1.5 nicm 164: cmd_if_shell_free(void *data)
1.1 nicm 165: {
1.5 nicm 166: struct cmd_if_shell_data *cdata = data;
1.20 nicm 167: struct cmd_q *cmdq = cdata->cmdq;
168:
169: if (cdata->started)
170: return;
1.1 nicm 171:
1.20 nicm 172: if (!cmdq_free(cmdq) && !cdata->bflag)
173: cmdq_continue(cmdq);
1.1 nicm 174:
1.15 nicm 175: free(cdata->cmd_else);
176: free(cdata->cmd_if);
177: free(cdata);
1.1 nicm 178: }
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