tmux/cmd-switch-client.c

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/* $Id: cmd-switch-client.c,v 1.23 2010-12-22 15:31:00 tcunha Exp $ */
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/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* 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 <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
/*
* Switch client to a different session.
*/
void cmd_switch_client_init(struct cmd *, int);
int cmd_switch_client_parse(struct cmd *, int, char **, char **);
int cmd_switch_client_exec(struct cmd *, struct cmd_ctx *);
void cmd_switch_client_free(struct cmd *);
size_t cmd_switch_client_print(struct cmd *, char *, size_t);
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struct cmd_switch_client_data {
char *name;
char *target;
int flag_last;
int flag_next;
int flag_previous;
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};
const struct cmd_entry cmd_switch_client_entry = {
"switch-client", "switchc",
"[-lnp] [-c target-client] [-t target-session]",
0, "",
cmd_switch_client_init,
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cmd_switch_client_parse,
cmd_switch_client_exec,
cmd_switch_client_free,
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cmd_switch_client_print
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};
void
cmd_switch_client_init(struct cmd *self, int key)
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{
struct cmd_switch_client_data *data;
self->data = data = xmalloc(sizeof *data);
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data->name = NULL;
data->target = NULL;
data->flag_last = 0;
data->flag_next = 0;
data->flag_previous = 0;
switch (key) {
case '(':
data->flag_previous = 1;
break;
case ')':
data->flag_next = 1;
break;
case 'L':
data->flag_last = 1;
break;
}
}
int
cmd_switch_client_parse(struct cmd *self, int argc, char **argv, char **cause)
{
struct cmd_switch_client_data *data;
int opt;
self->entry->init(self, KEYC_NONE);
data = self->data;
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while ((opt = getopt(argc, argv, "c:lnpt:")) != -1) {
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switch (opt) {
case 'c':
if (data->name == NULL)
data->name = xstrdup(optarg);
break;
case 'l':
if (data->flag_next || data->flag_previous ||
data->target != NULL)
goto usage;
data->flag_last = 1;
break;
case 'n':
if (data->flag_previous || data->flag_last ||
data->target != NULL)
goto usage;
data->flag_next = 1;
break;
case 'p':
if (data->flag_next || data->flag_last ||
data->target != NULL)
goto usage;
data->flag_next = 1;
break;
case 't':
if (data->flag_next || data->flag_previous)
goto usage;
if (data->target == NULL)
data->target = xstrdup(optarg);
break;
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default:
goto usage;
}
}
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argc -= optind;
argv += optind;
if (argc != 0)
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goto usage;
return (0);
usage:
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);
}
int
cmd_switch_client_exec(struct cmd *self, struct cmd_ctx *ctx)
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{
struct cmd_switch_client_data *data = self->data;
struct client *c;
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struct session *s;
if (data == NULL)
return (0);
if ((c = cmd_find_client(ctx, data->name)) == NULL)
return (-1);
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s = NULL;
if (data->flag_next) {
if ((s = session_next_session(c->session)) == NULL) {
ctx->error(ctx, "can't find next session");
return (-1);
}
} else if (data->flag_previous) {
if ((s = session_previous_session(c->session)) == NULL) {
ctx->error(ctx, "can't find previous session");
return (-1);
}
} else if (data->flag_last) {
if (c->last_session != NULL && session_alive(c->last_session))
s = c->last_session;
if (s == NULL) {
ctx->error(ctx, "can't find last session");
return (-1);
}
} else
s = cmd_find_session(ctx, data->target);
if (s == NULL)
return (-1);
if (c->session != NULL)
c->last_session = c->session;
c->session = s;
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recalculate_sizes();
server_check_unattached();
server_redraw_client(c);
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return (0);
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}
void
cmd_switch_client_free(struct cmd *self)
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{
struct cmd_switch_client_data *data = self->data;
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if (data->name != NULL)
xfree(data->name);
if (data->target != NULL)
xfree(data->target);
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xfree(data);
}
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size_t
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cmd_switch_client_print(struct cmd *self, char *buf, size_t len)
{
struct cmd_switch_client_data *data = self->data;
size_t off = 0;
off += xsnprintf(buf, len, "%s", self->entry->name);
if (data == NULL)
return (off);
if (off < len && data->flag_last)
off += xsnprintf(buf + off, len - off, "%s", " -l");
if (off < len && data->flag_next)
off += xsnprintf(buf + off, len - off, "%s", " -n");
if (off < len && data->flag_previous)
off += xsnprintf(buf + off, len - off, "%s", " -p");
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if (off < len && data->name != NULL)
off += cmd_prarg(buf + off, len - off, " -c ", data->name);
if (off < len && data->target != NULL)
off += cmd_prarg(buf + off, len - off, " -t ", data->target);
return (off);
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}