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/* $OpenBSD: arg.c,v 1.1 2009/06/01 22:58:49 nicm Exp $ */
/*
* Copyright (c) 2008 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 <fnmatch.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
struct client *arg_lookup_client(const char *);
struct session *arg_lookup_session(const char *);
struct client *
arg_lookup_client(const char *name)
{
struct client *c;
u_int i;
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c != NULL && strcmp(name, c->tty.path) == 0)
return (c);
}
return (NULL);
}
struct session *
arg_lookup_session(const char *name)
{
struct session *s, *newest = NULL;
struct timeval *tv;
u_int i;
tv = NULL;
for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
s = ARRAY_ITEM(&sessions, i);
if (s == NULL || fnmatch(name, s->name, 0) != 0)
continue;
if (tv == NULL || timercmp(&s->tv, tv, >)) {
newest = s;
tv = &s->tv;
}
}
return (newest);
}
struct client *
arg_parse_client(const char *arg)
{
struct client *c;
char *arg2;
size_t n;
if (arg != NULL && (arg[0] != ':' || arg[1] != '\0')) {
arg2 = xstrdup(arg);
/* Trim a trailing : if any from the argument. */
n = strlen(arg2);
if (arg2[n - 1] == ':')
arg2[n - 1] = '\0';
/* Try and look up the client name. */
c = arg_lookup_client(arg2);
xfree(arg2);
return (c);
}
return (NULL);
}
struct session *
arg_parse_session(const char *arg)
{
struct session *s;
struct client *c;
char *arg2;
size_t n;
if (arg != NULL && (arg[0] != ':' || arg[1] != '\0')) {
arg2 = xstrdup(arg);
/* Trim a trailing : if any from the argument. */
n = strlen(arg2);
if (arg2[n - 1] == ':')
arg2[n - 1] = '\0';
/* See if the argument matches a session. */
if ((s = arg_lookup_session(arg2)) != NULL) {
xfree(arg2);
return (s);
}
/* If not try a client. */
if ((c = arg_lookup_client(arg2)) != NULL) {
xfree(arg2);
return (c->session);
}
xfree(arg2);
}
return (NULL);
}
int
arg_parse_window(const char *arg, struct session **s, int *idx)
{
char *arg2, *ptr;
const char *errstr;
*idx = -1;
/* Handle no argument or a single :. */
if (arg == NULL || (arg[0] == ':' && arg[1] == '\0')) {
*s = arg_parse_session(NULL);
return (0);
}
/* Find the separator if any. */
arg2 = xstrdup(arg);
ptr = strrchr(arg2, ':');
/*
* If it is first, this means no session name, so use current session
* and try to convert the rest as index.
*/
if (ptr == arg2) {
*idx = strtonum(ptr + 1, 0, INT_MAX, &errstr);
if (errstr != NULL) {
xfree(arg2);
return (1);
}
xfree(arg2);
*s = arg_parse_session(NULL);
return (0);
}
/* If missing, try as an index, else look up immediately. */
if (ptr == NULL) {
*idx = strtonum(arg2, 0, INT_MAX, &errstr);
if (errstr == NULL) {
/* This is good as an index; use current session. */
xfree(arg2);
*s = arg_parse_session(NULL);
return (0);
}
*idx = -1;
goto lookup;
}
/* If last, strip it and look up as a session. */
if (ptr[1] == '\0') {
*ptr = '\0';
goto lookup;
}
/* Present but not first and not last. Break and convert both. */
*ptr = '\0';
*idx = strtonum(ptr + 1, 0, INT_MAX, &errstr);
if (errstr != NULL) {
xfree(arg2);
return (1);
}
lookup:
/* Look up as session. */
*s = arg_parse_session(arg2);
xfree(arg2);
if (*s == NULL)
return (1);
return (0);
}
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