Merge commit 'meins/master'
[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 static void *parse_receiver_args(int receiver_num, char *options)
19 {
20 struct receiver *r = &receivers[receiver_num];
21 char **argv;
22 int argc, i;
23 void *conf;
24
25
26 // PARA_DEBUG_LOG("%s, options: %s\n", r->name,
27 // options? options : "(none)");
28 if (options) {
29 PARA_DEBUG_LOG("options: %s\n", options);
30 argc = split_args(options, &argv, " \t");
31 for (i = argc - 1; i >= 0; i--)
32 argv[i + 1] = argv[i];
33 argv[0] = para_strdup(r->name);
34 argc += 1;
35 PARA_DEBUG_LOG("argc = %d, argv[0]: %s\n", argc, argv[0]);
36 } else {
37 argc = 1;
38 argv = para_malloc(2 * sizeof(char*));
39 argv[0] = NULL;
40 argv[1] = NULL;
41 }
42 conf = r->parse_config(argc, argv);
43 free(argv[0]);
44 free(argv);
45 return conf;
46 }
47
48 /**
49 * check if given string is a valid command line for any receiver
50 *
51 * \param \ra string of the form receiver_name:options
52 * \param receiver_num contains the number of the receiver upon success
53 *
54 * This function checks whether \a ra starts with the name of a supported
55 * paraslash receiver, optinally followed by a colon and any options for that
56 * receiver. If a valid receiver name was found and further are present, the
57 * remaining part of \a ra is passed to that receiver's config parser.
58 *
59 * \return On success, a pointer to the gengetopt args info struct is returned
60 * and \a receiver_num contains the number of the receiver. Otherwise this function
61 * returns \p NULL.
62 */
63 void *check_receiver_arg(char *ra, int *receiver_num)
64 {
65 int j;
66
67 PARA_DEBUG_LOG("checking %s\n", ra);
68 for (j = 0; receivers[j].name; j++) {
69 const char *name = receivers[j].name;
70 size_t len = strlen(name);
71 char c;
72 if (strlen(ra) < len)
73 continue;
74 if (strncmp(name, ra, len))
75 continue;
76 c = ra[len];
77 if (c && c != ' ')
78 continue;
79 if (c && !receivers[j].parse_config)
80 return NULL;
81 *receiver_num = j;
82 return parse_receiver_args(j, c? ra + len + 1: NULL);
83 }
84 PARA_ERROR_LOG("receiver not found\n");
85 return NULL;
86 }
87
88 /**
89 * Print out the help texts to all receivers.
90 *
91 * \param detailed Whether the detailed help should be printed.
92 */
93 void print_receiver_helps(int detailed)
94 {
95 int i;
96
97 printf_or_die("\nAvailable receivers: \n\t");
98 FOR_EACH_RECEIVER(i)
99 printf_or_die("%s%s", i? " " : "", receivers[i].name);
100 printf_or_die("\n\n");
101 FOR_EACH_RECEIVER(i) {
102 struct receiver *r = receivers + i;
103
104 if (!r->help.short_help)
105 continue;
106 printf_or_die("Options for %s:\n", r->name);
107 ggo_print_help(&r->help, detailed);
108 }
109 }