Annotation of src/usr.bin/tmux/cmd-if-shell.c, Revision 1.31
1.31 ! nicm 1: /* $OpenBSD: cmd-if-shell.c,v 1.30 2015/04/21 15:18:06 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",
1.27 nicm 40: "bFt:", 2, 3,
41: "[-bF] " CMD_TARGET_PANE_USAGE " shell-command command [command]",
1.10 nicm 42: 0,
43: cmd_if_shell_exec
1.1 nicm 44: };
45:
1.5 nicm 46: struct cmd_if_shell_data {
1.30 nicm 47: char *cmd_if;
48: char *cmd_else;
49:
50: struct cmd_q *cmdq;
51: struct mouse_event mouse;
52:
53: int bflag;
1.31 ! nicm 54: int references;
1.5 nicm 55: };
1.1 nicm 56:
1.16 nicm 57: enum cmd_retval
1.20 nicm 58: cmd_if_shell_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 59: {
1.10 nicm 60: struct args *args = self->args;
1.5 nicm 61: struct cmd_if_shell_data *cdata;
1.27 nicm 62: char *shellcmd, *cmd, *cause;
63: struct cmd_list *cmdlist;
1.23 nicm 64: struct client *c;
1.21 nicm 65: struct session *s = NULL;
66: struct winlink *wl = NULL;
67: struct window_pane *wp = NULL;
1.19 nicm 68: struct format_tree *ft;
69:
1.21 nicm 70: if (args_has(args, 't'))
71: wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp);
1.23 nicm 72: else {
73: c = cmd_find_client(cmdq, NULL, 1);
74: if (c != NULL && c->session != NULL) {
75: s = c->session;
76: wl = s->curw;
77: wp = wl->window->active;
78: }
79: }
1.19 nicm 80:
81: ft = format_create();
1.28 nicm 82: format_defaults(ft, NULL, s, wl, wp);
1.19 nicm 83: shellcmd = format_expand(ft, args->argv[0]);
84: format_free(ft);
1.27 nicm 85:
86: if (args_has(args, 'F')) {
87: cmd = NULL;
88: if (*shellcmd != '0' && *shellcmd != '\0')
89: cmd = args->argv[1];
90: else if (args->argc == 3)
91: cmd = args->argv[2];
92: if (cmd == NULL)
93: return (CMD_RETURN_NORMAL);
94: if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
95: if (cause != NULL) {
96: cmdq_error(cmdq, "%s", cause);
97: free(cause);
98: }
99: return (CMD_RETURN_ERROR);
100: }
1.30 nicm 101: cmdq_run(cmdq, cmdlist, &cmdq->item->mouse);
1.27 nicm 102: cmd_list_free(cmdlist);
103: return (CMD_RETURN_NORMAL);
104: }
1.5 nicm 105:
106: cdata = xmalloc(sizeof *cdata);
1.30 nicm 107:
1.13 nicm 108: cdata->cmd_if = xstrdup(args->argv[1]);
1.14 nicm 109: if (args->argc == 3)
110: cdata->cmd_else = xstrdup(args->argv[2]);
1.13 nicm 111: else
112: cdata->cmd_else = NULL;
1.30 nicm 113:
1.20 nicm 114: cdata->bflag = args_has(args, 'b');
1.5 nicm 115:
1.20 nicm 116: cdata->cmdq = cmdq;
1.30 nicm 117: memcpy(&cdata->mouse, &cmdq->item->mouse, sizeof cdata->mouse);
1.20 nicm 118: cmdq->references++;
1.5 nicm 119:
1.31 ! nicm 120: cdata->references = 1;
1.22 nicm 121: job_run(shellcmd, s, cmd_if_shell_callback, cmd_if_shell_free, cdata);
1.19 nicm 122: free(shellcmd);
1.1 nicm 123:
1.20 nicm 124: if (cdata->bflag)
125: return (CMD_RETURN_NORMAL);
126: return (CMD_RETURN_WAIT);
1.1 nicm 127: }
128:
1.5 nicm 129: void
130: cmd_if_shell_callback(struct job *job)
1.1 nicm 131: {
1.5 nicm 132: struct cmd_if_shell_data *cdata = job->data;
1.20 nicm 133: struct cmd_q *cmdq = cdata->cmdq, *cmdq1;
1.1 nicm 134: struct cmd_list *cmdlist;
1.14 nicm 135: char *cause, *cmd;
1.1 nicm 136:
1.20 nicm 137: if (cmdq->dead)
138: return;
139:
140: if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0)
1.13 nicm 141: cmd = cdata->cmd_else;
1.20 nicm 142: else
1.13 nicm 143: cmd = cdata->cmd_if;
1.20 nicm 144: if (cmd == NULL)
145: return;
146:
147: if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
1.1 nicm 148: if (cause != NULL) {
1.20 nicm 149: cmdq_error(cmdq, "%s", cause);
1.15 nicm 150: free(cause);
1.1 nicm 151: }
1.5 nicm 152: return;
1.1 nicm 153: }
154:
1.20 nicm 155: cmdq1 = cmdq_new(cmdq->client);
156: cmdq1->emptyfn = cmd_if_shell_done;
157: cmdq1->data = cdata;
158:
1.31 ! nicm 159: cdata->references++;
1.30 nicm 160: cmdq_run(cmdq1, cmdlist, &cdata->mouse);
1.1 nicm 161: cmd_list_free(cmdlist);
162: }
163:
164: void
1.20 nicm 165: cmd_if_shell_done(struct cmd_q *cmdq1)
166: {
167: struct cmd_if_shell_data *cdata = cmdq1->data;
168: struct cmd_q *cmdq = cdata->cmdq;
1.25 nicm 169:
170: if (cmdq1->client_exit >= 0)
171: cmdq->client_exit = cmdq1->client_exit;
1.31 ! nicm 172: cmdq_free(cmdq1);
! 173:
! 174: if (--cdata->references != 0)
! 175: return;
1.20 nicm 176:
177: if (!cmdq_free(cmdq) && !cdata->bflag)
178: cmdq_continue(cmdq);
179:
180: free(cdata->cmd_else);
181: free(cdata->cmd_if);
182: free(cdata);
183: }
184:
185: void
1.5 nicm 186: cmd_if_shell_free(void *data)
1.1 nicm 187: {
1.5 nicm 188: struct cmd_if_shell_data *cdata = data;
1.20 nicm 189: struct cmd_q *cmdq = cdata->cmdq;
190:
1.31 ! nicm 191: if (--cdata->references != 0)
1.20 nicm 192: return;
1.1 nicm 193:
1.20 nicm 194: if (!cmdq_free(cmdq) && !cdata->bflag)
195: cmdq_continue(cmdq);
1.1 nicm 196:
1.15 nicm 197: free(cdata->cmd_else);
198: free(cdata->cmd_if);
199: free(cdata);
1.1 nicm 200: }
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