Jack2: varargs.h Source File

Jack2 1.9.12

varargs.h
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 int session_id; /* requested session_id */
39 }
40 jack_varargs_t;
41
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
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 va->session_id = -1;
55 }
56
57 static inline void jack_varargs_parse (jack_options_t options, va_list ap, jack_varargs_t *va)
58 {
59 // initialize default settings
60 jack_varargs_init (va);
61
62 if ((options & JackServerName)) {
63 char *sn = va_arg(ap, char *);
64 if (sn)
65 va->server_name = sn;
66 }
67 if ((options & JackLoadName))
68 va->load_name = va_arg(ap, char *);
69 if ((options & JackLoadInit))
70 va->load_init = va_arg(ap, char *);
71 if ((options & JackSessionID)) {
72 char *sid = va_arg(ap, char *);
73 if (sid)
74 va->session_id = atoi( sid );
75 }
76 }
77
78 #ifdef __cplusplus
79 }
80 #endif
81
82 #endif /* __jack_varargs_h__ */
jack_varargs_t
Definition: varargs.h:34