mirror of
https://github.com/tmux/tmux.git
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152 lines
3.4 KiB
C
152 lines
3.4 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2009 Tiago Cunha <me@tiagocunha.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 <errno.h>
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#include <stdlib.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_parse(struct cmd *, int, char **, char **);
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int cmd_if_shell_exec(struct cmd *, struct cmd_ctx *);
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void cmd_if_shell_free(struct cmd *);
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void cmd_if_shell_init(struct cmd *, int);
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size_t cmd_if_shell_print(struct cmd *, char *, size_t);
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struct cmd_if_shell_data {
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char *cmd;
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char *sh_cmd;
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};
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const struct cmd_entry cmd_if_shell_entry = {
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"if-shell", "if",
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"shell-command command",
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0, 0,
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cmd_if_shell_init,
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cmd_if_shell_parse,
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cmd_if_shell_exec,
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cmd_if_shell_free,
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cmd_if_shell_print
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};
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void
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cmd_if_shell_init(struct cmd *self, unused int arg)
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{
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struct cmd_if_shell_data *data;
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self->data = data = xmalloc(sizeof *data);
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data->cmd = NULL;
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data->sh_cmd = NULL;
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}
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int
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cmd_if_shell_parse(struct cmd *self, int argc, char **argv, char **cause)
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{
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struct cmd_if_shell_data *data;
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int opt;
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self->entry->init(self, KEYC_NONE);
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data = self->data;
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while ((opt = getopt(argc, argv, "")) != -1) {
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switch (opt) {
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default:
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goto usage;
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}
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}
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argc -= optind;
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argv += optind;
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if (argc != 2)
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goto usage;
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data->sh_cmd = xstrdup(argv[0]);
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data->cmd = xstrdup(argv[1]);
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return (0);
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usage:
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xasprintf(cause, "usage: %s %s", self->entry->name, self->entry->usage);
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self->entry->free(self);
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return (-1);
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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 cmd_if_shell_data *data = self->data;
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struct cmd_list *cmdlist;
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char *cause;
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int ret;
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if ((ret = system(data->sh_cmd)) < 0) {
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ctx->error(ctx, "system error: %s", strerror(errno));
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return (-1);
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} else if (ret != 0)
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return (0);
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if (cmd_string_parse(data->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 (-1);
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}
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if (cmd_list_exec(cmdlist, ctx) < 0) {
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cmd_list_free(cmdlist);
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return (-1);
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}
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cmd_list_free(cmdlist);
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return (0);
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}
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void
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cmd_if_shell_free(struct cmd *self)
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{
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struct cmd_if_shell_data *data = self->data;
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if (data->cmd != NULL)
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xfree(data->cmd);
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if (data->sh_cmd != NULL)
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xfree(data->sh_cmd);
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xfree(data);
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}
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size_t
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cmd_if_shell_print(struct cmd *self, char *buf, size_t len)
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{
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struct cmd_if_shell_data *data = self->data;
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size_t off = 0;
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off += xsnprintf(buf, len, "%s", self->entry->name);
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if (data == NULL)
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return (off);
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if (off < len && data->sh_cmd != NULL)
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off += cmd_prarg(buf + off, len - off, " ", data->sh_cmd);
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if (off < len && data->cmd != NULL)
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off += cmd_prarg(buf + off, len - off, " ", data->cmd);
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return (off);
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}
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