src/engine/music-dummymod.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3
   4 #include "music-module.h"
   5 #include "upkg.h"
   6
   7 struct music_mod {
   8         struct upkg_file *f;
   9 };
  10
  11 int music_mod_init(void)
  12 {
  13         return 0;
  14 }
  15
  16 void music_mod_exit(void)
  17 {
  18 }
  19
  20 struct music_mod *music_mod_open(struct upkg_file *f)
  21 {
  22         struct music_mod *m = malloc(sizeof *m);
  23
  24         if (m) {
  25                 m->f = f;
  26         }
  27
  28         return m;
  29 }
  30
  31 void music_mod_close(struct music_mod *m)
  32 {
  33         free(m);
  34 }
  35
  36 int music_mod_dump(struct music_mod *m, FILE *of)
  37 {
  38         unsigned char buf[1024];
  39         size_t rc;
  40
  41         if (upkg_export_seek(m->f, 0, SEEK_SET) != 0) {
  42                 return -1;
  43         }
  44
  45         while (1) {
  46                 rc = upkg_export_read(m->f, buf, sizeof buf);
  47                 if (rc == 0) {
  48                         if (!m->f->eof)
  49                                 return -1;
  50                         return 0;
  51                 }
  52
  53                 if (fwrite(buf, rc, 1, of) != 1) {
  54                         if (feof(of)) {
  55                                 fprintf(stderr, "unexpected end-of-file.\n");
  56                         } else {
  57                                 perror("fwrite");
  58                         }
  59                         return -1;
  60                 }
  61
  62                 if (rc < sizeof buf) {
  63                         if (!m->f->eof)
  64                                 return -1;
  65                         return 0;
  66                 }
  67         }
  68 }
  69
  70 const char *music_mod_type(struct music_mod *mod)
  71 {
  72         return "unknown";
  73 }