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Simplified Win32 file opening code

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--HG--
branch : SDL-1.2
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/branches/SDL-1.2%402468
This commit is contained in:
Sam Lantinga 2007-07-10 16:01:46 +00:00
parent 5d9a9d6e7f
commit bfef646388
1 changed files with 12 additions and 19 deletions
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29
src/file/SDL_rwops.c
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@ -56,12 +56,7 @@ static int SDLCALL win32_file_open(SDL_RWops *context, const char *filename, con
int a_mode; int a_mode;
if (!context) if (!context)
return -1; return -1; /* failed (invalid call) */
context->hidden.win32io.h = INVALID_HANDLE_VALUE; /* mark this as unusable */
context->hidden.win32io.buffer.data = NULL;
context->hidden.win32io.buffer.size = 0;
context->hidden.win32io.buffer.left = 0;
/* "r" = reading, file must exist */ /* "r" = reading, file must exist */
/* "w" = writing, truncate existing, file may not exist */ /* "w" = writing, truncate existing, file may not exist */
@ -79,12 +74,6 @@ static int SDLCALL win32_file_open(SDL_RWops *context, const char *filename, con
if (!r_right && !w_right) /* inconsistent mode */ if (!r_right && !w_right) /* inconsistent mode */
return -1; /* failed (invalid call) */ return -1; /* failed (invalid call) */
context->hidden.win32io.buffer.data = (char *)SDL_malloc(READAHEAD_BUFFER_SIZE);
if (!context->hidden.win32io.buffer.data) {
SDL_OutOfMemory();
return -1;
}
#ifdef _WIN32_WCE #ifdef _WIN32_WCE
{ {
size_t size = SDL_strlen(filename)+1; size_t size = SDL_strlen(filename)+1;
@ -93,8 +82,6 @@ static int SDLCALL win32_file_open(SDL_RWops *context, const char *filename, con
if ( MultiByteToWideChar(CP_UTF8, 0, filename, -1, filenameW, size) == 0 ) { if ( MultiByteToWideChar(CP_UTF8, 0, filename, -1, filenameW, size) == 0 ) {
SDL_SetError("Unable to convert filename to Unicode"); SDL_SetError("Unable to convert filename to Unicode");
SDL_stack_free(filenameW); SDL_stack_free(filenameW);
SDL_free(context->hidden.win32io.buffer.data);
context->hidden.win32io.buffer.data = NULL;
return -1; return -1;
} }
h = CreateFile(filenameW, (w_right|r_right), (w_right)? 0 : FILE_SHARE_READ, h = CreateFile(filenameW, (w_right|r_right), (w_right)? 0 : FILE_SHARE_READ,
@ -114,13 +101,20 @@ static int SDLCALL win32_file_open(SDL_RWops *context, const char *filename, con
if (h==INVALID_HANDLE_VALUE) { if (h==INVALID_HANDLE_VALUE) {
SDL_SetError("Couldn't open %s",filename); SDL_SetError("Couldn't open %s",filename);
SDL_free(context->hidden.win32io.buffer.data);
context->hidden.win32io.buffer.data = NULL;
return -2; /* failed (CreateFile) */ return -2; /* failed (CreateFile) */
} }
context->hidden.win32io.h = h; context->hidden.win32io.h = h;
context->hidden.win32io.append = a_mode; context->hidden.win32io.append = a_mode;
context->hidden.win32io.buffer.data = (char *)SDL_malloc(READAHEAD_BUFFER_SIZE);
if (!context->hidden.win32io.buffer.data) {
SDL_OutOfMemory();
CloseHandle(context->hidden.win32io.h);
return -1;
}
context->hidden.win32io.buffer.size = 0;
context->hidden.win32io.buffer.left = 0;
return 0; /* ok */ return 0; /* ok */
} }
static int SDLCALL win32_file_seek(SDL_RWops *context, int offset, int whence) static int SDLCALL win32_file_seek(SDL_RWops *context, int offset, int whence)
@ -435,8 +429,7 @@ SDL_RWops *SDL_RWFromFile(const char *file, const char *mode)
rwops = SDL_AllocRW(); rwops = SDL_AllocRW();
if (!rwops) if (!rwops)
return NULL; /* SDL_SetError already setup by SDL_AllocRW() */ return NULL; /* SDL_SetError already setup by SDL_AllocRW() */
rwops->hidden.win32io.h = INVALID_HANDLE_VALUE; if (win32_file_open(rwops,file,mode) < 0) {
if (win32_file_open(rwops,file,mode)) {
SDL_FreeRW(rwops); SDL_FreeRW(rwops);
return NULL; return NULL;
} }