Jack2  1.9.9
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  }
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__ */