Annotation of src/usr.bin/tmux/cmd-if-shell.c, Revision 1.23
1.23 ! nicm 1: /* $OpenBSD: cmd-if-shell.c,v 1.22 2013/03/25 11:43:01 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;
1.23 ! nicm 62: struct client *c;
1.21 nicm 63: struct session *s = NULL;
64: struct winlink *wl = NULL;
65: struct window_pane *wp = NULL;
1.19 nicm 66: struct format_tree *ft;
67:
1.21 nicm 68: if (args_has(args, 't'))
69: wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp);
1.23 ! nicm 70: else {
! 71: c = cmd_find_client(cmdq, NULL, 1);
! 72: if (c != NULL && c->session != NULL) {
! 73: s = c->session;
! 74: wl = s->curw;
! 75: wp = wl->window->active;
! 76: }
! 77: }
1.19 nicm 78:
79: ft = format_create();
1.21 nicm 80: if (s != NULL)
81: format_session(ft, s);
82: if (s != NULL && wl != NULL)
83: format_winlink(ft, s, wl);
84: if (wp != NULL)
85: format_window_pane(ft, wp);
1.19 nicm 86: shellcmd = format_expand(ft, args->argv[0]);
87: format_free(ft);
1.5 nicm 88:
89: cdata = xmalloc(sizeof *cdata);
1.13 nicm 90: cdata->cmd_if = xstrdup(args->argv[1]);
1.14 nicm 91: if (args->argc == 3)
92: cdata->cmd_else = xstrdup(args->argv[2]);
1.13 nicm 93: else
94: cdata->cmd_else = NULL;
1.20 nicm 95: cdata->bflag = args_has(args, 'b');
1.5 nicm 96:
1.20 nicm 97: cdata->started = 0;
98: cdata->cmdq = cmdq;
99: cmdq->references++;
1.5 nicm 100:
1.22 nicm 101: job_run(shellcmd, s, cmd_if_shell_callback, cmd_if_shell_free, cdata);
1.19 nicm 102: free(shellcmd);
1.1 nicm 103:
1.20 nicm 104: if (cdata->bflag)
105: return (CMD_RETURN_NORMAL);
106: return (CMD_RETURN_WAIT);
1.1 nicm 107: }
108:
1.5 nicm 109: void
110: cmd_if_shell_callback(struct job *job)
1.1 nicm 111: {
1.5 nicm 112: struct cmd_if_shell_data *cdata = job->data;
1.20 nicm 113: struct cmd_q *cmdq = cdata->cmdq, *cmdq1;
1.1 nicm 114: struct cmd_list *cmdlist;
1.14 nicm 115: char *cause, *cmd;
1.1 nicm 116:
1.20 nicm 117: if (cmdq->dead)
118: return;
119:
120: if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0)
1.13 nicm 121: cmd = cdata->cmd_else;
1.20 nicm 122: else
1.13 nicm 123: cmd = cdata->cmd_if;
1.20 nicm 124: if (cmd == NULL)
125: return;
126:
127: if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
1.1 nicm 128: if (cause != NULL) {
1.20 nicm 129: cmdq_error(cmdq, "%s", cause);
1.15 nicm 130: free(cause);
1.1 nicm 131: }
1.5 nicm 132: return;
1.1 nicm 133: }
134:
1.20 nicm 135: cdata->started = 1;
136:
137: cmdq1 = cmdq_new(cmdq->client);
138: cmdq1->emptyfn = cmd_if_shell_done;
139: cmdq1->data = cdata;
140:
141: cmdq_run(cmdq1, cmdlist);
1.1 nicm 142: cmd_list_free(cmdlist);
143: }
144:
145: void
1.20 nicm 146: cmd_if_shell_done(struct cmd_q *cmdq1)
147: {
148: struct cmd_if_shell_data *cdata = cmdq1->data;
149: struct cmd_q *cmdq = cdata->cmdq;
150:
151: if (!cmdq_free(cmdq) && !cdata->bflag)
152: cmdq_continue(cmdq);
153:
154: cmdq_free(cmdq1);
155:
156: free(cdata->cmd_else);
157: free(cdata->cmd_if);
158: free(cdata);
159: }
160:
161: void
1.5 nicm 162: cmd_if_shell_free(void *data)
1.1 nicm 163: {
1.5 nicm 164: struct cmd_if_shell_data *cdata = data;
1.20 nicm 165: struct cmd_q *cmdq = cdata->cmdq;
166:
167: if (cdata->started)
168: return;
1.1 nicm 169:
1.20 nicm 170: if (!cmdq_free(cmdq) && !cdata->bflag)
171: cmdq_continue(cmdq);
1.1 nicm 172:
1.15 nicm 173: free(cdata->cmd_else);
174: free(cdata->cmd_if);
175: free(cdata);
1.1 nicm 176: }