src_platform/sdl/bz/resources/resource.c

   1 #include <bz/resources/resource.h>
   2
   3 #include <bz/types/identifier_internal.h>
   4 #include <stb_sprintf.h>
   5 #include <physfs.h>
   6 #include <stdlib.h>
   7
   8 struct BZResource { PHYSFS_File unused; };
   9
  10 // This is FOR DEBUG ONLY!
  11 char *gBZDataDebugDirectory = NULL;
  12
  13 void bzFileSystemInit(const char *argv0, const char *dataPath) {
  14         PHYSFS_init(argv0);
  15
  16         if (gBZDataDebugDirectory != NULL) {
  17                 bzLog("!!! A debug data directory was found !!!");
  18                 bzLog("!!! DO NOT SHIP IF THIS IS DISPLAYED !!!");
  19                 int fsr3 = PHYSFS_mount(gBZDataDebugDirectory, NULL, 0);
  20                 bzAssert(fsr3 != 0);
  21                 bzLog("Trying to load: %s", gBZDataDebugDirectory);
  22         } else {
  23                 char tmp[1024];
  24                 stbsp_snprintf(tmp, 1024, "%s%s", dataPath, "assets.pak");
  25                 int fsr2 = PHYSFS_mount(tmp, NULL, 0);
  26                 bzAssert(fsr2 != 0);
  27                 bzLog("Trying to load: %s", tmp);
  28         }
  29 }
  30
  31 void bzFileSystemTeardown() {
  32         PHYSFS_deinit();
  33 }
  34
  35 BZResourceID bzResourcesOpenResource(const char *type, const char *identifierFmt, ...) {
  36         bzMakeIdentifier(identifier, identifierFmt);
  37         bzLog("Trying to load: %s", identifier);
  38
  39         BZResourceID resource = (BZResourceID)PHYSFS_openRead(identifier);
  40         bzAssertMessage(resource != NULL, "Error opening resource '%s': %s", identifier, PHYSFS_getLastError());
  41
  42         return resource;
  43 }
  44
  45 extern void bzResourcesCloseResource(BZResourceID resource) {
  46         PHYSFS_File *handle = (PHYSFS_File *)resource;
  47         PHYSFS_close(handle);
  48 }
  49
  50 size_t bzResourcesFileLength(BZResourceID resource) {
  51         PHYSFS_File *handle = (PHYSFS_File *)resource;
  52         return PHYSFS_fileLength(handle);
  53 }
  54
  55 size_t bzResourcesTell(BZResourceID resource) {
  56         PHYSFS_File *handle = (PHYSFS_File *)resource;
  57         return PHYSFS_tell(handle);
  58 }
  59
  60 size_t bzResourcesSeek(BZResourceID resource, size_t position) {
  61         PHYSFS_File *handle = (PHYSFS_File *)resource;
  62         return PHYSFS_seek(handle, position);
  63 }
  64
  65 size_t bzResourcesReadBytes(BZResourceID resource, void *outputBuffer, size_t numBytes) {
  66         PHYSFS_File *handle = (PHYSFS_File *)resource;
  67         PHYSFS_sint64 r = PHYSFS_readBytes(handle, outputBuffer, numBytes);
  68         if (r == -1) {
  69                 // FIXME, handle error?
  70                 return 0;
  71         } else {
  72                 return (size_t)r;
  73         }
  74 }