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physfs/platform/pocketpc.c

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/*
* PocketPC support routines for PhysicsFS.
*
* Please see the file LICENSE.txt in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
#define __PHYSICSFS_INTERNAL__
#include "physfs_platforms.h"
#ifdef PHYSFS_PLATFORM_POCKETPC
#include <stdio.h>
#include <windows.h>
#include "physfs_internal.h"
#define INVALID_FILE_ATTRIBUTES 0xFFFFFFFF
#define INVALID_SET_FILE_POINTER 0xFFFFFFFF
typedef struct
{
HANDLE handle;
int readonly;
} winCEfile;
const char *__PHYSFS_platformDirSeparator = "\\";
static char *userDir = NULL;
/*
* Figure out what the last failing Win32 API call was, and
* generate a human-readable string for the error message.
*
* The return value is a static buffer that is overwritten with
* each call to this function.
*/
static const char *win32strerror(void)
{
static TCHAR msgbuf[255];
TCHAR *ptr = msgbuf;
FormatMessage(
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), /* Default language */
msgbuf,
sizeof (msgbuf) / sizeof (TCHAR),
NULL
);
/* chop off newlines. */
for (ptr = msgbuf; *ptr; ptr++)
{
if ((*ptr == '\n') || (*ptr == '\r'))
{
*ptr = ' ';
break;
} /* if */
} /* for */
return((const char *) msgbuf);
} /* win32strerror */
/* !!! FIXME: need to check all of these for NULLs. */
#define UTF8_TO_UNICODE_STACK_MACRO(w_assignto, str) { \
if (str == NULL) \
w_assignto = NULL; \
else { \
const PHYSFS_uint64 len = (PHYSFS_uint64) ((strlen(str) * 4) + 1); \
w_assignto = (char *) __PHYSFS_smallAlloc(len); \
PHYSFS_uc2fromutf8(str, (PHYSFS_uint16 *) w_assignto, len); \
} \
} \
static char *getExePath()
{
DWORD buflen;
int success = 0;
TCHAR *ptr = NULL;
TCHAR *retval = (TCHAR*) allocator.Malloc(sizeof (TCHAR) * (MAX_PATH + 1));
char *charretval;
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
retval[0] = _T('\0');
/* !!! FIXME: don't preallocate here? */
/* !!! FIXME: use smallAlloc? */
buflen = GetModuleFileName(NULL, retval, MAX_PATH + 1);
if (buflen <= 0)
__PHYSFS_setError(win32strerror());
else
{
retval[buflen] = '\0'; /* does API always null-terminate this? */
ptr = retval+buflen;
while( ptr != retval )
{
if( *ptr != _T('\\') )
*ptr-- = _T('\0');
else
break;
} /* while */
success = 1;
} /* else */
if (!success)
{
allocator.Free(retval);
return(NULL); /* physfs error message will be set, above. */
} /* if */
buflen = (buflen * 4) + 1;
charretval = (char *) allocator.Malloc(buflen);
if (charretval != NULL)
PHYSFS_utf8fromucs2((const PHYSFS_uint16 *) retval, charretval, buflen);
allocator.Free(retval);
return(charretval); /* w00t. */
} /* getExePath */
int __PHYSFS_platformInit(void)
{
userDir = getExePath();
BAIL_IF_MACRO(userDir == NULL, NULL, 0); /* failed? */
return(1); /* always succeed. */
} /* __PHYSFS_platformInit */
int __PHYSFS_platformDeinit(void)
{
allocator.Free(userDir);
return(1); /* always succeed. */
} /* __PHYSFS_platformDeinit */
void __PHYSFS_platformDetectAvailableCDs(PHYSFS_StringCallback cb, void *data)
{
/* no-op on this platform. */
} /* __PHYSFS_platformDetectAvailableCDs */
char *__PHYSFS_platformCalcBaseDir(const char *argv0)
{
return(getExePath());
} /* __PHYSFS_platformCalcBaseDir */
char *__PHYSFS_platformGetUserName(void)
{
BAIL_MACRO(ERR_NOT_IMPLEMENTED, NULL);
} /* __PHYSFS_platformGetUserName */
char *__PHYSFS_platformGetUserDir(void)
{
return userDir;
BAIL_MACRO(ERR_NOT_IMPLEMENTED, NULL);
} /* __PHYSFS_platformGetUserDir */
void *__PHYSFS_platformGetThreadID(void)
{
return((void *)1); /* single threaded. */
} /* __PHYSFS_platformGetThreadID */
int __PHYSFS_platformExists(const char *fname)
{
int retval = 0;
wchar_t *w_fname = NULL;
UTF8_TO_UNICODE_STACK_MACRO(w_fname, fname);
if (w_fname != NULL)
retval = (GetFileAttributes(w_fname) != INVALID_FILE_ATTRIBUTES);
__PHYSFS_smallFree(w_fname);
return(retval);
} /* __PHYSFS_platformExists */
int __PHYSFS_platformIsSymLink(const char *fname)
{
BAIL_MACRO(ERR_NOT_IMPLEMENTED, 0);
} /* __PHYSFS_platformIsSymlink */
int __PHYSFS_platformIsDirectory(const char *fname)
{
int retval = 0;
wchar_t *w_fname = NULL;
UTF8_TO_UNICODE_STACK_MACRO(w_fname, fname);
if (w_fname != NULL)
retval = ((GetFileAttributes(w_fname) & FILE_ATTRIBUTE_DIRECTORY) != 0);
__PHYSFS_smallFree(w_fname);
return(retval);
} /* __PHYSFS_platformIsDirectory */
char *__PHYSFS_platformCvtToDependent(const char *prepend,
const char *dirName,
const char *append)
{
int len = ((prepend) ? strlen(prepend) : 0) +
((append) ? strlen(append) : 0) +
strlen(dirName) + 1;
char *retval = (char *) allocator.Malloc(len);
char *p;
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
if (prepend)
strcpy(retval, prepend);
else
retval[0] = '\0';
strcat(retval, dirName);
if (append)
strcat(retval, append);
for (p = strchr(retval, '/'); p != NULL; p = strchr(p + 1, '/'))
*p = '\\';
return(retval);
} /* __PHYSFS_platformCvtToDependent */
static int doEnumCallback(const wchar_t *w_fname)
{
const PHYSFS_uint64 len = (PHYSFS_uint64) ((wcslen(w_fname) * 4) + 1);
char *str = (char *) __PHYSFS_smallAlloc(len);
PHYSFS_utf8fromucs2((const PHYSFS_uint16 *) w_fname, str, len);
callback(callbackdata, origdir, str);
__PHYSFS_smallFree(str);
return 1;
} /* doEnumCallback */
void __PHYSFS_platformEnumerateFiles(const char *dirname,
int omitSymLinks,
PHYSFS_EnumFilesCallback callback,
const char *origdir,
void *callbackdata)
{
HANDLE dir;
WIN32_FIND_DATA ent;
char *SearchPath;
wchar_t *w_SearchPath;
size_t len = strlen(dirname);
/* Allocate a new string for path, maybe '\\', "*", and NULL terminator */
SearchPath = (char *) __PHYSFS_smallAlloc(len + 3);
BAIL_IF_MACRO(SearchPath == NULL, ERR_OUT_OF_MEMORY, NULL);
/* Copy current dirname */
strcpy(SearchPath, dirname);
/* if there's no '\\' at the end of the path, stick one in there. */
if (SearchPath[len - 1] != '\\')
{
SearchPath[len++] = '\\';
SearchPath[len] = '\0';
} /* if */
/* Append the "*" to the end of the string */
strcat(SearchPath, "*");
UTF8_TO_UNICODE_STACK_MACRO(w_SearchPath, SearchPath);
__PHYSFS_smallFree(SearchPath);
dir = FindFirstFile(w_SearchPath, &ent);
__PHYSFS_smallFree(w_SearchPath);
if (dir == INVALID_HANDLE_VALUE)
return;
do
{
const char *str = NULL;
if (wcscmp(ent.cFileName, L".") == 0)
continue;
if (wcscmp(ent.cFileName, L"..") == 0)
continue;
if (!doEnumCallback(ent.cFileName))
break;
} while (FindNextFile(dir, &ent) != 0);
FindClose(dir);
} /* __PHYSFS_platformEnumerateFiles */
char *__PHYSFS_platformCurrentDir(void)
{
return("\\");
} /* __PHYSFS_platformCurrentDir */
char *__PHYSFS_platformRealPath(const char *path)
{
char *retval = (char *) allocator.Malloc(strlen(path) + 1);
strcpy(retval,path);
return(retval);
} /* __PHYSFS_platformRealPath */
int __PHYSFS_platformMkDir(const char *path)
{
int retval = 0;
wchar_t *w_path = NULL;
UTF8_TO_UNICODE_STACK_MACRO(w_path, path);
if (w_path != NULL)
{
retval = CreateDirectory(w_path, NULL);
__PHYSFS_smallFree(w_fname);
} /* if */
return(retval);
} /* __PHYSFS_platformMkDir */
static void *doOpen(const char *fname, DWORD mode, DWORD creation, int rdonly)
{
HANDLE fileHandle;
winCEfile *retval;
wchar_t *w_fname = NULL;
UTF8_TO_UNICODE_STACK_MACRO(w_fname, fname);
fileHandle = CreateFile(w_fname, mode, FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, creation, FILE_ATTRIBUTE_NORMAL, NULL);
__PHYSFS_smallFree(w_fname);
BAIL_IF_MACRO(fileHandle == INVALID_HANDLE_VALUE, win32strerror(), NULL);
retval = (winCEfile *) allocator.Malloc(sizeof (winCEfile));
if (retval == NULL)
{
CloseHandle(fileHandle);
BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
} /* if */
retval->readonly = rdonly;
retval->handle = fileHandle;
return(retval);
} /* doOpen */
void *__PHYSFS_platformOpenRead(const char *filename)
{
return(doOpen(filename, GENERIC_READ, OPEN_EXISTING, 1));
} /* __PHYSFS_platformOpenRead */
void *__PHYSFS_platformOpenWrite(const char *filename)
{
return(doOpen(filename, GENERIC_WRITE, CREATE_ALWAYS, 0));
} /* __PHYSFS_platformOpenWrite */
void *__PHYSFS_platformOpenAppend(const char *filename)
{
void *retval = doOpen(filename, GENERIC_WRITE, OPEN_ALWAYS, 0);
if (retval != NULL)
{
HANDLE h = ((winCEfile *) retval)->handle;
if (SetFilePointer(h, 0, NULL, FILE_END) == INVALID_SET_FILE_POINTER)
{
const char *err = win32strerror();
CloseHandle(h);
allocator.Free(retval);
BAIL_MACRO(err, NULL);
} /* if */
} /* if */
return(retval);
} /* __PHYSFS_platformOpenAppend */
PHYSFS_sint64 __PHYSFS_platformRead(void *opaque, void *buffer,
PHYSFS_uint32 size, PHYSFS_uint32 count)
{
HANDLE Handle = ((winCEfile *) opaque)->handle;
DWORD CountOfBytesRead;
PHYSFS_sint64 retval;
/* Read data from the file */
/*!!! - uint32 might be a greater # than DWORD */
if (!ReadFile(Handle, buffer, count * size, &CountOfBytesRead, NULL))
{
retval = -1;
} /* if */
else
{
/* Return the number of "objects" read. */
/* !!! - What if not the right amount of bytes was read to make an object? */
retval = CountOfBytesRead / size;
} /* else */
return(retval);
} /* __PHYSFS_platformRead */
PHYSFS_sint64 __PHYSFS_platformWrite(void *opaque, const void *buffer,
PHYSFS_uint32 size, PHYSFS_uint32 count)
{
HANDLE Handle = ((winCEfile *) opaque)->handle;
DWORD CountOfBytesWritten;
PHYSFS_sint64 retval;
/* Read data from the file */
/*!!! - uint32 might be a greater # than DWORD */
if (!WriteFile(Handle, buffer, count * size, &CountOfBytesWritten, NULL))
{
retval = -1;
} /* if */
else
{
/* Return the number of "objects" read. */
/*!!! - What if not the right number of bytes was written? */
retval = CountOfBytesWritten / size;
} /* else */
return(retval);
} /* __PHYSFS_platformWrite */
int __PHYSFS_platformSeek(void *opaque, PHYSFS_uint64 pos)
{
HANDLE Handle = ((winCEfile *) opaque)->handle;
DWORD HighOrderPos;
DWORD rc;
/* Get the high order 32-bits of the position */
//HighOrderPos = HIGHORDER_UINT64(pos);
HighOrderPos = (unsigned long)(pos>>32);
/*!!! SetFilePointer needs a signed 64-bit value. */
/* Move pointer "pos" count from start of file */
rc = SetFilePointer(Handle, (unsigned long)(pos&0x00000000ffffffff),
&HighOrderPos, FILE_BEGIN);
if ((rc == INVALID_SET_FILE_POINTER) && (GetLastError() != NO_ERROR))
{
BAIL_MACRO(win32strerror(), 0);
}
return(1); /* No error occured */
} /* __PHYSFS_platformSeek */
PHYSFS_sint64 __PHYSFS_platformTell(void *opaque)
{
HANDLE Handle = ((winCEfile *) opaque)->handle;
DWORD HighPos = 0;
DWORD LowPos;
PHYSFS_sint64 retval;
/* Get current position */
LowPos = SetFilePointer(Handle, 0, &HighPos, FILE_CURRENT);
if ((LowPos == INVALID_SET_FILE_POINTER) && (GetLastError() != NO_ERROR))
{
BAIL_MACRO(win32strerror(), -1);
} /* if */
else
{
/* Combine the high/low order to create the 64-bit position value */
retval = (((PHYSFS_uint64) HighPos) << 32) | LowPos;
//assert(retval >= 0);
} /* else */
return(retval);
} /* __PHYSFS_platformTell */
PHYSFS_sint64 __PHYSFS_platformFileLength(void *opaque)
{
HANDLE Handle = ((winCEfile *) opaque)->handle;
DWORD SizeHigh;
DWORD SizeLow;
PHYSFS_sint64 retval;
SizeLow = GetFileSize(Handle, &SizeHigh);
if ((SizeLow == INVALID_SET_FILE_POINTER) && (GetLastError() != NO_ERROR))
{
BAIL_MACRO(win32strerror(), -1);
} /* if */
else
{
/* Combine the high/low order to create the 64-bit position value */
retval = (((PHYSFS_uint64) SizeHigh) << 32) | SizeLow;
//assert(retval >= 0);
} /* else */
return(retval);
} /* __PHYSFS_platformFileLength */
int __PHYSFS_platformEOF(void *opaque)
{
const PHYSFS_sint64 FileLength = __PHYSFS_platformFileLength(opaque);
PHYSFS_sint64 FilePosition;
int retval = 0;
if (FileLength == 0)
return 1; /* we're definitely at EOF. */
/* Get the current position in the file */
if ((FilePosition = __PHYSFS_platformTell(opaque)) != -1)
{
/* Non-zero if EOF is equal to the file length */
retval = (FilePosition == FileLength);
} /* if */
return(retval);
} /* __PHYSFS_platformEOF */
int __PHYSFS_platformFlush(void *opaque)
{
winCEfile *fh = ((winCEfile *) opaque);
if (!fh->readonly)
BAIL_IF_MACRO(!FlushFileBuffers(fh->handle), win32strerror(), 0);
return(1);
} /* __PHYSFS_platformFlush */
int __PHYSFS_platformClose(void *opaque)
{
HANDLE Handle = ((winCEfile *) opaque)->handle;
BAIL_IF_MACRO(!CloseHandle(Handle), win32strerror(), 0);
allocator.Free(opaque);
return(1);
} /* __PHYSFS_platformClose */
int __PHYSFS_platformDelete(const char *path)
{
wchar_t *w_path = NULL;
UTF8_TO_UNICODE_STACK_MACRO(w_path, path);
/* If filename is a folder */
if (GetFileAttributes(w_path) == FILE_ATTRIBUTE_DIRECTORY)
{
int retval = !RemoveDirectory(w_path);
__PHYSFS_smallFree(w_path);
BAIL_IF_MACRO(retval, win32strerror(), 0);
} /* if */
else
{
int retval = !DeleteFile(w_path);
__PHYSFS_smallFree(w_path);
BAIL_IF_MACRO(retval, win32strerror(), 0);
} /* else */
return(1); /* if you got here, it worked. */
} /* __PHYSFS_platformDelete */
/*
* !!! FIXME: why aren't we using Critical Sections instead of Mutexes?
* !!! FIXME: mutexes on Windows are for cross-process sync. CritSects are
* !!! FIXME: mutexes for threads in a single process and are faster.
*/
void *__PHYSFS_platformCreateMutex(void)
{
return((void *) CreateMutex(NULL, FALSE, NULL));
} /* __PHYSFS_platformCreateMutex */
void __PHYSFS_platformDestroyMutex(void *mutex)
{
CloseHandle((HANDLE) mutex);
} /* __PHYSFS_platformDestroyMutex */
int __PHYSFS_platformGrabMutex(void *mutex)
{
return(WaitForSingleObject((HANDLE) mutex, INFINITE) != WAIT_FAILED);
} /* __PHYSFS_platformGrabMutex */
void __PHYSFS_platformReleaseMutex(void *mutex)
{
ReleaseMutex((HANDLE) mutex);
} /* __PHYSFS_platformReleaseMutex */
PHYSFS_sint64 __PHYSFS_platformGetLastModTime(const char *fname)
{
BAIL_MACRO(ERR_NOT_IMPLEMENTED, -1);
} /* __PHYSFS_platformGetLastModTime */
/* !!! FIXME: Don't use C runtime for allocators? */
int __PHYSFS_platformSetDefaultAllocator(PHYSFS_Allocator *a)
{
return(0); /* just use malloc() and friends. */
} /* __PHYSFS_platformSetDefaultAllocator */
#endif /* PHYSFS_PLATFORM_POCKETPC */
/* end of pocketpc.c ... */
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