mirror of
https://github.com/tmux/tmux.git
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135 lines
3.2 KiB
C
135 lines
3.2 KiB
C
/* $Id$ */
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/*
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* Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
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* Copyright (c) 2009 Nicholas Marriott <nicm@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <string.h>
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#include "tmux.h"
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/*
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* Executes a tmux command if a shell command returns true.
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*/
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int cmd_if_shell_check(struct args *);
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int cmd_if_shell_exec(struct cmd *, struct cmd_ctx *);
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void cmd_if_shell_callback(struct job *);
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void cmd_if_shell_free(void *);
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const struct cmd_entry cmd_if_shell_entry = {
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"if-shell", "if",
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"", 2, 4,
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"shell-command command [else command]",
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0,
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NULL,
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cmd_if_shell_check,
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cmd_if_shell_exec
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};
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struct cmd_if_shell_data {
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char *cmd_if;
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char *cmd_else;
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struct cmd_ctx ctx;
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};
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int
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cmd_if_shell_check(struct args *args)
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{
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if (args->argc == 3)
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return (-1);
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if (args->argc == 4 && strcmp(args->argv[2], "else") != 0)
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return (-1);
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return (0);
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}
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int
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cmd_if_shell_exec(struct cmd *self, struct cmd_ctx *ctx)
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{
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struct args *args = self->args;
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struct cmd_if_shell_data *cdata;
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const char *shellcmd = args->argv[0];
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cdata = xmalloc(sizeof *cdata);
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cdata->cmd_if = xstrdup(args->argv[1]);
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if (args->argc == 4)
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cdata->cmd_else = xstrdup(args->argv[3]);
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else
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cdata->cmd_else = NULL;
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memcpy(&cdata->ctx, ctx, sizeof cdata->ctx);
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if (ctx->cmdclient != NULL)
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ctx->cmdclient->references++;
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if (ctx->curclient != NULL)
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ctx->curclient->references++;
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job_run(shellcmd, cmd_if_shell_callback, cmd_if_shell_free, cdata);
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return (1); /* don't let client exit */
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}
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void
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cmd_if_shell_callback(struct job *job)
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{
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struct cmd_if_shell_data *cdata = job->data;
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struct cmd_ctx *ctx = &cdata->ctx;
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struct cmd_list *cmdlist;
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char *cmd;
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char *cause;
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if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0) {
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cmd = cdata->cmd_else;
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if (cmd == NULL)
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return;
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} else
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cmd = cdata->cmd_if;
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if (cmd_string_parse(cmd, &cmdlist, &cause) != 0) {
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if (cause != NULL) {
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ctx->error(ctx, "%s", cause);
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xfree(cause);
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}
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return;
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}
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cmd_list_exec(cmdlist, ctx);
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cmd_list_free(cmdlist);
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}
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void
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cmd_if_shell_free(void *data)
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{
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struct cmd_if_shell_data *cdata = data;
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struct cmd_ctx *ctx = &cdata->ctx;
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struct msg_exit_data exitdata;
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if (ctx->cmdclient != NULL) {
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ctx->cmdclient->references--;
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exitdata.retcode = ctx->cmdclient->retcode;
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ctx->cmdclient->flags |= CLIENT_EXIT;
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}
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if (ctx->curclient != NULL)
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ctx->curclient->references--;
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if (cdata->cmd_else != NULL)
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xfree(cdata->cmd_else);
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xfree(cdata->cmd_if);
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xfree(cdata);
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}
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