1 /*
2 *  Copyright (C) 2004 Jack O'Quin
3 *
4 *  This program is free software; you can redistribute it and/or modify
5 *  it under the terms of the GNU Lesser General Public License as published by
6 *  the Free Software Foundation; either version 2.1 of the License, or
7 *  (at your option) any later version.
8 *
9 *  This program is distributed in the hope that it will be useful,
10 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
11 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 *  GNU Lesser General Public License for more details.
13 *
14 *  You should have received a copy of the GNU Lesser General Public License
15 *  along with this program; if not, write to the Free Software
16 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 *
18 */
19 
20 #ifndef __jack_varargs_h__
21 #define __jack_varargs_h__
22 
23 #include <stdlib.h>
24 #include <stdarg.h>
25 #include <string.h>
26 #include "types.h"
27 
28 #ifdef __cplusplus
29 extern "C"
30 {
31 #endif
32 
33     /* variable argument structure */
34     typedef struct {
35         char *server_name;              /* server name */
36         char *load_name;                /* load module name */
37         char *load_init;                /* initialization string */
38         jack_uuid_t session_id;         /* requested session_id */
39     }
40     jack_varargs_t;
41 
jack_default_server_name(void)42     static const char* jack_default_server_name (void)
43     {
44         const char *server_name;
45         if ((server_name = getenv("JACK_DEFAULT_SERVER")) == NULL)
46             server_name = "default";
47         return server_name;
48     }
49 
jack_varargs_init(jack_varargs_t * va)50     static inline void jack_varargs_init (jack_varargs_t *va)
51     {
52         memset (va, 0, sizeof(jack_varargs_t));
53         va->server_name = (char*)jack_default_server_name();
54     }
55 
jack_varargs_parse(jack_options_t options,va_list ap,jack_varargs_t * va)56     static inline void jack_varargs_parse (jack_options_t options, va_list ap, jack_varargs_t *va)
57     {
58         // initialize default settings
59         jack_varargs_init (va);
60 
61         if ((options & JackServerName)) {
62             char *sn = va_arg(ap, char *);
63             if (sn)
64                 va->server_name = sn;
65         }
66         if ((options & JackLoadName))
67             va->load_name = va_arg(ap, char *);
68         if ((options & JackLoadInit))
69             va->load_init = va_arg(ap, char *);
70         if ((options & JackSessionID)) {
71             char *sid = va_arg(ap, char *);
72             if (sid) {
73                 const long long id = atoll( sid );
74                 if (id > 0)
75                     va->session_id = id;
76             }
77         }
78     }
79 
80 #ifdef __cplusplus
81 }
82 #endif
83 
84 #endif /* __jack_varargs_h__ */
85