c2ca29db6e7edf1d957de7e8f5029c9651ec21b6
[paraslash.git] / recv_common.c
1 /*
2 * Copyright (C) 2006-2009 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 /** \file recv_common.c common functions of para_recv and para_audiod */
8
9 #include "para.h"
10
11 #include "list.h"
12 #include "sched.h"
13 #include "ggo.h"
14 #include "recv.h"
15 #include "string.h"
16
17 DEFINE_RECEIVER_ARRAY;
18
19 /**
20 * Call the init function of each paraslash receiver.
21 */
22 void recv_init(void)
23 {
24 int i;
25
26 FOR_EACH_RECEIVER(i)
27 receivers[i].init(&receivers[i]);
28 }
29
30 static void *parse_receiver_args(int receiver_num, char *options)
31 {
32 struct receiver *r = &receivers[receiver_num];
33 char **argv;
34 int argc, i;
35 void *conf;
36
37
38 PARA_DEBUG_LOG("%s, options: %s\n", r->name,
39 options? options : "(none)");
40 if (options) {
41 PARA_DEBUG_LOG("options: %s\n", options);
42 argc = create_argv(options, " \t", &argv);
43 if (argc < 0)
44 return NULL;
45 for (i = argc - 1; i >= 0; i--)
46 argv[i + 1] = argv[i];
47 argv[0] = NULL;
48 argc++;
49 } else {
50 argc = 1;
51 argv = para_malloc(2 * sizeof(char*));
52 argv[0] = NULL;
53 argv[1] = NULL;
54 }
55 conf = r->parse_config(argc, argv);
56 for (i = 1; i < argc; i++)
57 free(argv[i]);
58 free(argv);
59 return conf;
60 }
61
62 /**
63 * check if given string is a valid command line for any receiver
64 *
65 * \param \ra string of the form receiver_name:options
66 * \param receiver_num contains the number of the receiver upon success
67 *
68 * This function checks whether \a ra starts with the name of a supported
69 * paraslash receiver, optinally followed by a colon and any options for that
70 * receiver. If a valid receiver name was found and further are present, the
71 * remaining part of \a ra is passed to that receiver's config parser.
72 *
73 * \return On success, a pointer to the gengetopt args info struct is returned
74 * and \a receiver_num contains the number of the receiver. Otherwise this function
75 * returns \p NULL.
76 */
77 void *check_receiver_arg(char *ra, int *receiver_num)
78 {
79 int j;
80
81 PARA_DEBUG_LOG("checking %s\n", ra);
82 for (j = 0; receivers[j].name; j++) {
83 const char *name = receivers[j].name;
84 size_t len = strlen(name);
85 char c;
86 if (strlen(ra) < len)
87 continue;
88 if (strncmp(name, ra, len))
89 continue;
90 c = ra[len];
91 if (c && c != ' ')
92 continue;
93 if (c && !receivers[j].parse_config)
94 return NULL;
95 *receiver_num = j;
96 return parse_receiver_args(j, c? ra + len + 1: NULL);
97 }
98 PARA_ERROR_LOG("receiver not found\n");
99 return NULL;
100 }
101
102 /**
103 * Print out the help texts to all receivers.
104 *
105 * \param detailed Whether the detailed help should be printed.
106 */
107 void print_receiver_helps(int detailed)
108 {
109 int i;
110
111 printf_or_die("\nAvailable receivers: \n\t");
112 FOR_EACH_RECEIVER(i)
113 printf_or_die("%s%s", i? " " : "", receivers[i].name);
114 printf_or_die("\n\n");
115 FOR_EACH_RECEIVER(i) {
116 struct receiver *r = receivers + i;
117 if (!r->help.short_help)
118 continue;
119 printf_or_die("Options for %s:\n", r->name);
120 ggo_print_help(&r->help, detailed);
121 }
122 }