/* $OpenBSD: cmd-if-shell.c,v 1.23 2013/03/25 16:04:07 nicm Exp $ */ /* * Copyright (c) 2009 Tiago Cunha * Copyright (c) 2009 Nicholas Marriott * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include "tmux.h" /* * Executes a tmux command if a shell command returns true or false. */ enum cmd_retval cmd_if_shell_exec(struct cmd *, struct cmd_q *); void cmd_if_shell_callback(struct job *); void cmd_if_shell_done(struct cmd_q *); void cmd_if_shell_free(void *); const struct cmd_entry cmd_if_shell_entry = { "if-shell", "if", "bt:", 2, 3, "[-b] " CMD_TARGET_PANE_USAGE " shell-command command [command]", 0, NULL, NULL, cmd_if_shell_exec }; struct cmd_if_shell_data { char *cmd_if; char *cmd_else; struct cmd_q *cmdq; int bflag; int started; }; enum cmd_retval cmd_if_shell_exec(struct cmd *self, struct cmd_q *cmdq) { struct args *args = self->args; struct cmd_if_shell_data *cdata; char *shellcmd; struct client *c; struct session *s = NULL; struct winlink *wl = NULL; struct window_pane *wp = NULL; struct format_tree *ft; if (args_has(args, 't')) wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp); else { c = cmd_find_client(cmdq, NULL, 1); if (c != NULL && c->session != NULL) { s = c->session; wl = s->curw; wp = wl->window->active; } } ft = format_create(); if (s != NULL) format_session(ft, s); if (s != NULL && wl != NULL) format_winlink(ft, s, wl); if (wp != NULL) format_window_pane(ft, wp); shellcmd = format_expand(ft, args->argv[0]); format_free(ft); cdata = xmalloc(sizeof *cdata); cdata->cmd_if = xstrdup(args->argv[1]); if (args->argc == 3) cdata->cmd_else = xstrdup(args->argv[2]); else cdata->cmd_else = NULL; cdata->bflag = args_has(args, 'b'); cdata->started = 0; cdata->cmdq = cmdq; cmdq->references++; job_run(shellcmd, s, cmd_if_shell_callback, cmd_if_shell_free, cdata); free(shellcmd); if (cdata->bflag) return (CMD_RETURN_NORMAL); return (CMD_RETURN_WAIT); } void cmd_if_shell_callback(struct job *job) { struct cmd_if_shell_data *cdata = job->data; struct cmd_q *cmdq = cdata->cmdq, *cmdq1; struct cmd_list *cmdlist; char *cause, *cmd; if (cmdq->dead) return; if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0) cmd = cdata->cmd_else; else cmd = cdata->cmd_if; if (cmd == NULL) return; if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) { if (cause != NULL) { cmdq_error(cmdq, "%s", cause); free(cause); } return; } cdata->started = 1; cmdq1 = cmdq_new(cmdq->client); cmdq1->emptyfn = cmd_if_shell_done; cmdq1->data = cdata; cmdq_run(cmdq1, cmdlist); cmd_list_free(cmdlist); } void cmd_if_shell_done(struct cmd_q *cmdq1) { struct cmd_if_shell_data *cdata = cmdq1->data; struct cmd_q *cmdq = cdata->cmdq; if (!cmdq_free(cmdq) && !cdata->bflag) cmdq_continue(cmdq); cmdq_free(cmdq1); free(cdata->cmd_else); free(cdata->cmd_if); free(cdata); } void cmd_if_shell_free(void *data) { struct cmd_if_shell_data *cdata = data; struct cmd_q *cmdq = cdata->cmdq; if (cdata->started) return; if (!cmdq_free(cmdq) && !cdata->bflag) cmdq_continue(cmdq); free(cdata->cmd_else); free(cdata->cmd_if); free(cdata); }