SDL_Surface *GetCIcon(FrameBuf *screen, short cicn_id)
{
char file[256];
LibPath path;
SDL_Surface *cicn;
SDL_RWops *cicn_src;
Uint8 *pixels, *mask;
Uint16 w, h;
/* Open the cicn sprite file.. */
sprintf(file, "Images"DIR_SEP"Maelstrom_Icon#%hd.cicn", cicn_id);
if ( (cicn_src=SDL_RWFromFile(path.Path(file), "r")) == NULL ) {
error("GetCIcon(%hd): Can't open CICN %s: ",
cicn_id, path.Path(file));
return(NULL);
}
w = SDL_ReadBE16(cicn_src);
h = SDL_ReadBE16(cicn_src);
pixels = new Uint8[w*h];
if ( SDL_RWread(cicn_src, pixels, 1, w*h) != (w*h) ) {
error("GetCIcon(%hd): Corrupt CICN!\n", cicn_id);
delete[] pixels;
SDL_RWclose(cicn_src);
return(NULL);
}
mask = new Uint8[(w/8)*h];
if ( SDL_RWread(cicn_src, mask, 1, (w/8)*h) != ((w/8)*h) ) {
error("GetCIcon(%hd): Corrupt CICN!\n", cicn_id);
delete[] pixels;
delete[] mask;
SDL_RWclose(cicn_src);
return(NULL);
}
SDL_RWclose(cicn_src);
cicn = screen->LoadImage(w, h, pixels, mask);
delete[] pixels;
delete[] mask;
if ( cicn == NULL ) {
error("GetCIcon(%hd): Couldn't convert CICN!\n", cicn_id);
}
return(cicn);
}
static void extract_fork(SDL_RWops *fin, int req_id, const char *file_name, const char *fork_name)
{
long id, fork_start, fork_size;
int num_entries, fork_found;
SDL_RWops *fout;
// Look for fork in source file
SDL_RWseek(fin, 0x18, SEEK_SET);
num_entries = SDL_ReadBE16(fin);
while (num_entries--) {
Uint32 id = SDL_ReadBE32(fin);
Sint32 ofs = SDL_ReadBE32(fin);
Sint32 len = SDL_ReadBE32(fin);
if (id == req_id) {
fork_found = 1;
fork_start = ofs;
fork_size = len;
}
}
if (!fork_found) {
fprintf(stderr, "Warning: source file doesn't contain a %s fork.\n", fork_name);
return;
}
// Found, open destination file
fout = SDL_RWFromFile(file_name, "wb");
if (fout == NULL) {
perror("Can't open destination file");
exit(1);
}
// Copy fork
SDL_RWseek(fin, fork_start, SEEK_SET);
while (fork_size) {
long length = fork_size > BUFFER_SIZE ? BUFFER_SIZE : fork_size;
SDL_RWread(fin, buffer, 1, length);
SDL_RWwrite(fout, buffer, 1, length);
fork_size -= length;
}
SDL_FreeRW(fout);
}
/**
* @brief Tests writing and reading from file using endian aware functions.
*
* \sa
* http://wiki.libsdl.org/moin.cgi/SDL_RWFromFile
* http://wiki.libsdl.org/moin.cgi/SDL_RWClose
* http://wiki.libsdl.org/moin.cgi/SDL_ReadBE16
* http://wiki.libsdl.org/moin.cgi/SDL_WriteBE16
*/
int
rwops_testFileWriteReadEndian(void)
{
SDL_RWops *rw;
Sint64 result;
int mode;
size_t objectsWritten;
Uint16 BE16value;
Uint32 BE32value;
Uint64 BE64value;
Uint16 LE16value;
Uint32 LE32value;
Uint64 LE64value;
Uint16 BE16test;
Uint32 BE32test;
Uint64 BE64test;
Uint16 LE16test;
Uint32 LE32test;
Uint64 LE64test;
int cresult;
for (mode = 0; mode < 3; mode++) {
/* Create test data */
switch (mode) {
case 0:
SDLTest_Log("All 0 values");
BE16value = 0;
BE32value = 0;
BE64value = 0;
LE16value = 0;
LE32value = 0;
LE64value = 0;
break;
case 1:
SDLTest_Log("All 1 values");
BE16value = 1;
BE32value = 1;
BE64value = 1;
LE16value = 1;
LE32value = 1;
LE64value = 1;
break;
case 2:
SDLTest_Log("Random values");
BE16value = SDLTest_RandomUint16();
BE32value = SDLTest_RandomUint32();
BE64value = SDLTest_RandomUint64();
LE16value = SDLTest_RandomUint16();
LE32value = SDLTest_RandomUint32();
LE64value = SDLTest_RandomUint64();
break;
}
/* Write test. */
rw = SDL_RWFromFile(RWopsWriteTestFilename, "w+");
SDLTest_AssertPass("Call to SDL_RWFromFile(..,\"w+\")");
SDLTest_AssertCheck(rw != NULL, "Verify opening file with SDL_RWFromFile in write mode does not return NULL");
/* Bail out if NULL */
if (rw == NULL) return TEST_ABORTED;
/* Write test data */
objectsWritten = SDL_WriteBE16(rw, BE16value);
SDLTest_AssertPass("Call to SDL_WriteBE16");
SDLTest_AssertCheck(objectsWritten == 1, "Validate number of objects written, expected: 1, got: %i", objectsWritten);
objectsWritten = SDL_WriteBE32(rw, BE32value);
SDLTest_AssertPass("Call to SDL_WriteBE32");
SDLTest_AssertCheck(objectsWritten == 1, "Validate number of objects written, expected: 1, got: %i", objectsWritten);
objectsWritten = SDL_WriteBE64(rw, BE64value);
SDLTest_AssertPass("Call to SDL_WriteBE64");
SDLTest_AssertCheck(objectsWritten == 1, "Validate number of objects written, expected: 1, got: %i", objectsWritten);
objectsWritten = SDL_WriteLE16(rw, LE16value);
SDLTest_AssertPass("Call to SDL_WriteLE16");
SDLTest_AssertCheck(objectsWritten == 1, "Validate number of objects written, expected: 1, got: %i", objectsWritten);
objectsWritten = SDL_WriteLE32(rw, LE32value);
SDLTest_AssertPass("Call to SDL_WriteLE32");
SDLTest_AssertCheck(objectsWritten == 1, "Validate number of objects written, expected: 1, got: %i", objectsWritten);
objectsWritten = SDL_WriteLE64(rw, LE64value);
SDLTest_AssertPass("Call to SDL_WriteLE64");
SDLTest_AssertCheck(objectsWritten == 1, "Validate number of objects written, expected: 1, got: %i", objectsWritten);
/* Test seek to start */
result = SDL_RWseek( rw, 0, RW_SEEK_SET );
SDLTest_AssertPass("Call to SDL_RWseek succeeded");
SDLTest_AssertCheck(result == 0, "Verify result from position 0 with SDL_RWseek, expected 0, got %i", result);
/* Read test data */
BE16test = SDL_ReadBE16(rw);
SDLTest_AssertPass("Call to SDL_ReadBE16");
SDLTest_AssertCheck(BE16test == BE16value, "Validate return value from SDL_ReadBE16, expected: %hu, got: %hu", BE16value, BE16test);
BE32test = SDL_ReadBE32(rw);
SDLTest_AssertPass("Call to SDL_ReadBE32");
SDLTest_AssertCheck(BE32test == BE32value, "Validate return value from SDL_ReadBE32, expected: %u, got: %u", BE32value, BE32test);
BE64test = SDL_ReadBE64(rw);
SDLTest_AssertPass("Call to SDL_ReadBE64");
SDLTest_AssertCheck(BE64test == BE64value, "Validate return value from SDL_ReadBE64, expected: %llu, got: %llu", BE64value, BE64test);
LE16test = SDL_ReadLE16(rw);
SDLTest_AssertPass("Call to SDL_ReadLE16");
SDLTest_AssertCheck(LE16test == LE16value, "Validate return value from SDL_ReadLE16, expected: %hu, got: %hu", LE16value, LE16test);
LE32test = SDL_ReadLE32(rw);
SDLTest_AssertPass("Call to SDL_ReadLE32");
SDLTest_AssertCheck(LE32test == LE32value, "Validate return value from SDL_ReadLE32, expected: %u, got: %u", LE32value, LE32test);
LE64test = SDL_ReadLE64(rw);
SDLTest_AssertPass("Call to SDL_ReadLE64");
SDLTest_AssertCheck(LE64test == LE64value, "Validate return value from SDL_ReadLE64, expected: %llu, got: %llu", LE64value, LE64test);
/* Close handle */
cresult = SDL_RWclose(rw);
SDLTest_AssertPass("Call to SDL_RWclose() succeeded");
SDLTest_AssertCheck(cresult == 0, "Verify result value is 0; got: %d", cresult);
}
return TEST_COMPLETED;
}
// Determine file type
Typecode FileSpecifier::GetType()
{
// if there's an extension, assume it's correct
const char *extension = strrchr(GetPath(), '.');
if (extension) {
extension_mapping *mapping = extensions;
while (mapping->extension)
{
if (( mapping->case_sensitive && (strcmp(extension + 1, mapping->extension) == 0)) ||
(!mapping->case_sensitive && (strcasecmp(extension + 1, mapping->extension) == 0)))
{
return mapping->typecode;
}
++mapping;
}
}
// Open file
OpenedFile f;
if (!Open(f))
return _typecode_unknown;
SDL_RWops *p = f.GetRWops();
int32 file_length = 0;
f.GetLength(file_length);
// Check for Sounds file
{
f.SetPosition(0);
uint32 version = SDL_ReadBE32(p);
uint32 tag = SDL_ReadBE32(p);
if ((version == 0 || version == 1) && tag == FOUR_CHARS_TO_INT('s', 'n', 'd', '2'))
return _typecode_sounds;
}
// Check for Map/Physics file
{
f.SetPosition(0);
int version = SDL_ReadBE16(p);
int data_version = SDL_ReadBE16(p);
if ((version == 0 || version == 1 || version == 2 || version == 4) && (data_version == 0 || data_version == 1 || data_version == 2)) {
SDL_RWseek(p, 68, SEEK_CUR);
int32 directory_offset = SDL_ReadBE32(p);
if (directory_offset >= file_length)
goto not_map;
f.SetPosition(128);
uint32 tag = SDL_ReadBE32(p);
// ghs: I do not believe this list is comprehensive
// I think it's just what we've seen so far?
switch (tag) {
case LINE_TAG:
case POINT_TAG:
case SIDE_TAG:
return _typecode_scenario;
break;
case MONSTER_PHYSICS_TAG:
return _typecode_physics;
break;
}
}
not_map: ;
}
// Check for Shapes file
{
f.SetPosition(0);
for (int i=0; i<32; i++) {
uint32 status_flags = SDL_ReadBE32(p);
int32 offset = SDL_ReadBE32(p);
int32 length = SDL_ReadBE32(p);
int32 offset16 = SDL_ReadBE32(p);
int32 length16 = SDL_ReadBE32(p);
if (status_flags != 0
|| (offset != NONE && (offset >= file_length || offset + length > file_length))
|| (offset16 != NONE && (offset16 >= file_length || offset16 + length16 > file_length)))
goto not_shapes;
SDL_RWseek(p, 12, SEEK_CUR);
}
return _typecode_shapes;
not_shapes: ;
}
// Not identified
return _typecode_unknown;
}
