code.delx.au - pulseaudio/blob - polyp/pamodinfo.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   6   polypaudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published
   8   by the Free Software Foundation; either version 2 of the License,
   9   or (at your option) any later version.
  10
  11   polypaudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with polypaudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <string.h>
  27 #include <getopt.h>
  28 #include <assert.h>
  29 #include <stdio.h>
  30 #include <ltdl.h>
  31
  32 #include "modinfo.h"
  33
  34 #define PREFIX "module-"
  35
  36 static int verbose = 0;
  37
  38 static void short_info(const char *name, const char *path, struct pa_modinfo *i) {
  39     assert(name && i);
  40     printf("%-40s%s\n", name, i->description ? i->description : "n/a");
  41 }
  42
  43 static void long_info(const char *name, const char *path, struct pa_modinfo *i) {
  44     assert(name && i);
  45     static int nl = 0;
  46
  47     if (nl)
  48         printf("\n");
  49
  50     nl = 1;
  51
  52     printf("Name: %s\n", name);
  53
  54     if (!i->description && !i->version && !i->author && !i->usage)
  55         printf("No module information available\n");
  56     else {
  57         if (i->version)
  58             printf("Version: %s\n", i->version);
  59         if (i->description)
  60             printf("Description: %s\n", i->description);
  61         if (i->author)
  62             printf("Author: %s\n", i->author);
  63         if (i->usage)
  64             printf("Usage: %s\n", i->usage);
  65     }
  66
  67     if (path)
  68         printf("Path: %s\n", path);
  69 }
  70
  71 static void show_info(const char *name, const char *path, void (*info)(const char *name, const char *path, struct pa_modinfo*i)) {
  72     struct pa_modinfo *i;
  73
  74     if ((i = pa_modinfo_get_by_name(path ? path : name))) {
  75         info(name, path, i);
  76         pa_modinfo_free(i);
  77     }
  78 }
  79
  80 static int callback(const char *path, lt_ptr data) {
  81     const char *e;
  82
  83     if ((e = (const char*) strrchr(path, '/')))
  84         e++;
  85     else
  86         e = path;
  87
  88     if (strlen(e) > sizeof(PREFIX)-1 && !strncmp(e, PREFIX, sizeof(PREFIX)-1))
  89         show_info(e, path, verbose ? long_info : short_info);
  90
  91     return 0;
  92 }
  93
  94 int main(int argc, char *argv[]) {
  95     int r = lt_dlinit();
  96     char *path  = NULL;
  97     int c;
  98     assert(r == 0);
  99
 100     while ((c = getopt(argc, argv, "p:v")) != -1) {
 101         switch (c) {
 102             case 'p':
 103                 path = optarg;
 104                 break;
 105             case 'v':
 106                 verbose = 1;
 107                 break;
 108             default:
 109                 return 1;
 110         }
 111     }
 112
 113     if (path)
 114         lt_dlsetsearchpath(path);
 115 #ifdef DLSEARCHPATH
 116     else
 117         lt_dlsetsearchpath(DLSEARCHPATH);
 118 #endif
 119
 120     if (argc > optind)
 121         show_info(argv[optind], NULL, long_info);
 122     else
 123         lt_dlforeachfile(NULL, callback, NULL);
 124
 125     lt_dlexit();
 126 }