/
platform_pocketpc.c
640 lines (498 loc) · 17.4 KB
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/*
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* PocketPC support routines for PhysicsFS.
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*
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* Please see the file LICENSE.txt in the source's root directory.
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*
* This file written by Ryan C. Gordon.
*/
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#define __PHYSICSFS_INTERNAL__
#include "physfs_platforms.h"
#ifdef PHYSFS_PLATFORM_POCKETPC
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#include <windows.h>
#include "physfs_internal.h"
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#define INVALID_FILE_ATTRIBUTES 0xFFFFFFFF
#define INVALID_SET_FILE_POINTER 0xFFFFFFFF
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typedef struct
{
HANDLE handle;
int readonly;
} winCEfile;
const char *__PHYSFS_platformDirSeparator = "\\";
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static char *userDir = NULL;
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/*
* 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(
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FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), /* Default language */
msgbuf,
sizeof (msgbuf) / sizeof (TCHAR),
NULL
);
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/* chop off newlines. */
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for (ptr = msgbuf; *ptr; ptr++)
{
if ((*ptr == '\n') || (*ptr == '\r'))
{
*ptr = ' ';
break;
} /* if */
} /* for */
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return ((const char *) msgbuf);
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} /* win32strerror */
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/* !!! FIXME: need to check all of these for NULLs. */
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#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); \
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w_assignto = (char *) __PHYSFS_smallAlloc(len); \
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PHYSFS_uc2fromutf8(str, (PHYSFS_uint16 *) w_assignto, len); \
} \
} \
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static char *getExePath()
{
DWORD buflen;
int success = 0;
TCHAR *ptr = NULL;
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TCHAR *retval = (TCHAR*) allocator.Malloc(sizeof (TCHAR) * (MAX_PATH + 1));
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char *charretval;
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
retval[0] = _T('\0');
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/* !!! FIXME: don't preallocate here? */
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/* !!! FIXME: use smallAlloc? */
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buflen = GetModuleFileName(NULL, retval, MAX_PATH + 1);
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if (buflen <= 0)
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__PHYSFS_setError(win32strerror());
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else
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{
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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;
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} /* else */
if (!success)
{
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allocator.Free(retval);
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return NULL; /* physfs error message will be set, above. */
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} /* if */
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buflen = (buflen * 4) + 1;
charretval = (char *) allocator.Malloc(buflen);
if (charretval != NULL)
PHYSFS_utf8fromucs2((const PHYSFS_uint16 *) retval, charretval, buflen);
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allocator.Free(retval);
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return charretval; /* w00t. */
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} /* getExePath */
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int __PHYSFS_platformInit(void)
{
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userDir = getExePath();
BAIL_IF_MACRO(userDir == NULL, NULL, 0); /* failed? */
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return 1; /* always succeed. */
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} /* __PHYSFS_platformInit */
int __PHYSFS_platformDeinit(void)
{
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allocator.Free(userDir);
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return 1; /* always succeed. */
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} /* __PHYSFS_platformDeinit */
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void __PHYSFS_platformDetectAvailableCDs(PHYSFS_StringCallback cb, void *data)
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{
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/* no-op on this platform. */
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} /* __PHYSFS_platformDetectAvailableCDs */
char *__PHYSFS_platformCalcBaseDir(const char *argv0)
{
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return getExePath();
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} /* __PHYSFS_platformCalcBaseDir */
char *__PHYSFS_platformGetUserName(void)
{
BAIL_MACRO(ERR_NOT_IMPLEMENTED, NULL);
} /* __PHYSFS_platformGetUserName */
char *__PHYSFS_platformGetUserDir(void)
{
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return userDir;
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BAIL_MACRO(ERR_NOT_IMPLEMENTED, NULL);
} /* __PHYSFS_platformGetUserDir */
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void *__PHYSFS_platformGetThreadID(void)
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{
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return ((void *)1); /* single threaded. */ /* !!! FIXME: is this true? */
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} /* __PHYSFS_platformGetThreadID */
char *__PHYSFS_platformCvtToDependent(const char *prepend,
const char *dirName,
const char *append)
{
int len = ((prepend) ? strlen(prepend) : 0) +
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((append) ? strlen(append) : 0) +
strlen(dirName) + 1;
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char *retval = (char *) allocator.Malloc(len);
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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 = '\\';
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return retval;
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} /* __PHYSFS_platformCvtToDependent */
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static int doEnumCallback(const wchar_t *w_fname)
{
const PHYSFS_uint64 len = (PHYSFS_uint64) ((wcslen(w_fname) * 4) + 1);
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char *str = (char *) __PHYSFS_smallAlloc(len);
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PHYSFS_utf8fromucs2((const PHYSFS_uint16 *) w_fname, str, len);
callback(callbackdata, origdir, str);
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__PHYSFS_smallFree(str);
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return 1;
} /* doEnumCallback */
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void __PHYSFS_platformEnumerateFiles(const char *dirname,
int omitSymLinks,
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PHYSFS_EnumFilesCallback callback,
const char *origdir,
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void *callbackdata)
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{
HANDLE dir;
WIN32_FIND_DATA ent;
char *SearchPath;
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wchar_t *w_SearchPath;
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size_t len = strlen(dirname);
/* Allocate a new string for path, maybe '\\', "*", and NULL terminator */
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SearchPath = (char *) __PHYSFS_smallAlloc(len + 3);
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BAIL_IF_MACRO(SearchPath == NULL, ERR_OUT_OF_MEMORY, NULL);
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/* 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, "*");
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UTF8_TO_UNICODE_STACK_MACRO(w_SearchPath, SearchPath);
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__PHYSFS_smallFree(SearchPath);
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dir = FindFirstFile(w_SearchPath, &ent);
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__PHYSFS_smallFree(w_SearchPath);
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if (dir == INVALID_HANDLE_VALUE)
return;
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do
{
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const char *str = NULL;
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if (wcscmp(ent.cFileName, L".") == 0)
continue;
if (wcscmp(ent.cFileName, L"..") == 0)
continue;
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if (!doEnumCallback(ent.cFileName))
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break;
} while (FindNextFile(dir, &ent) != 0);
FindClose(dir);
} /* __PHYSFS_platformEnumerateFiles */
char *__PHYSFS_platformCurrentDir(void)
{
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return "\\";
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} /* __PHYSFS_platformCurrentDir */
char *__PHYSFS_platformRealPath(const char *path)
{
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char *retval = (char *) allocator.Malloc(strlen(path) + 1);
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strcpy(retval,path);
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return retval;
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} /* __PHYSFS_platformRealPath */
int __PHYSFS_platformMkDir(const char *path)
{
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int retval = 0;
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wchar_t *w_path = NULL;
UTF8_TO_UNICODE_STACK_MACRO(w_path, path);
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if (w_path != NULL)
{
retval = CreateDirectory(w_path, NULL);
__PHYSFS_smallFree(w_fname);
} /* if */
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return retval;
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} /* __PHYSFS_platformMkDir */
static void *doOpen(const char *fname, DWORD mode, DWORD creation, int rdonly)
{
HANDLE fileHandle;
winCEfile *retval;
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wchar_t *w_fname = NULL;
UTF8_TO_UNICODE_STACK_MACRO(w_fname, fname);
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fileHandle = CreateFile(w_fname, mode, FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, creation, FILE_ATTRIBUTE_NORMAL, NULL);
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__PHYSFS_smallFree(w_fname);
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BAIL_IF_MACRO(fileHandle == INVALID_HANDLE_VALUE, win32strerror(), NULL);
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retval = (winCEfile *) allocator.Malloc(sizeof (winCEfile));
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if (retval == NULL)
{
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CloseHandle(fileHandle);
BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
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} /* if */
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retval->readonly = rdonly;
retval->handle = fileHandle;
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return retval;
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} /* doOpen */
void *__PHYSFS_platformOpenRead(const char *filename)
{
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return doOpen(filename, GENERIC_READ, OPEN_EXISTING, 1);
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} /* __PHYSFS_platformOpenRead */
void *__PHYSFS_platformOpenWrite(const char *filename)
{
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return doOpen(filename, GENERIC_WRITE, CREATE_ALWAYS, 0);
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} /* __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);
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allocator.Free(retval);
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BAIL_MACRO(err, NULL);
} /* if */
} /* if */
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return retval;
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} /* __PHYSFS_platformOpenAppend */
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PHYSFS_sint64 __PHYSFS_platformRead(void *opaque, void *buf, PHYSFS_uint64 len)
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{
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HANDLE Handle = ((winCEfile *) opaque)->handle;
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DWORD CountOfBytesRead = 0;
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BAIL_IF_MACRO(!__PHYSFS_ui64FitsAddressSpace(len),ERR_INVALID_ARGUMENT,-1);
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if (!ReadFile(Handle, buf, (DWORD) len, &CountOfBytesRead, NULL))
return -1; /* !!! FIXME: set an error string? */
return (PHYSFS_sint64) CountOfBytesRead;
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} /* __PHYSFS_platformRead */
PHYSFS_sint64 __PHYSFS_platformWrite(void *opaque, const void *buffer,
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PHYSFS_uint64 len)
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{
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HANDLE Handle = ((winCEfile *) opaque)->handle;
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DWORD CountOfBytesWritten = 0;
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BAIL_IF_MACRO(!__PHYSFS_ui64FitsAddressSpace(len),ERR_INVALID_ARGUMENT,-1);
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if (!WriteFile(Handle, buffer, (DWORD) len, &CountOfBytesWritten, NULL))
return -1;
return PHYSFS_sint64) CountOfBytesWritten;
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} /* __PHYSFS_platformWrite */
int __PHYSFS_platformSeek(void *opaque, PHYSFS_uint64 pos)
{
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HANDLE Handle = ((winCEfile *) opaque)->handle;
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DWORD HighOrderPos;
DWORD rc;
/* Get the high order 32-bits of the position */
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/*HighOrderPos = HIGHORDER_UINT64(pos);*/
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HighOrderPos = (unsigned long)(pos>>32);
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/*!!! SetFilePointer needs a signed 64-bit value. */
/* Move pointer "pos" count from start of file */
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rc = SetFilePointer(Handle, (unsigned long)(pos&0x00000000ffffffff),
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&HighOrderPos, FILE_BEGIN);
if ((rc == INVALID_SET_FILE_POINTER) && (GetLastError() != NO_ERROR))
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{
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BAIL_MACRO(win32strerror(), 0);
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}
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return 1; /* No error occured */
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} /* __PHYSFS_platformSeek */
PHYSFS_sint64 __PHYSFS_platformTell(void *opaque)
{
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HANDLE Handle = ((winCEfile *) opaque)->handle;
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DWORD HighPos = 0;
DWORD LowPos;
PHYSFS_sint64 retval;
/* Get current position */
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LowPos = SetFilePointer(Handle, 0, &HighPos, FILE_CURRENT);
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if ((LowPos == INVALID_SET_FILE_POINTER) && (GetLastError() != NO_ERROR))
{
BAIL_MACRO(win32strerror(), 0);
} /* if */
else
{
/* Combine the high/low order to create the 64-bit position value */
retval = (((PHYSFS_uint64) HighPos) << 32) | LowPos;
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/*assert(retval >= 0);*/
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} /* else */
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return retval;
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} /* __PHYSFS_platformTell */
PHYSFS_sint64 __PHYSFS_platformFileLength(void *opaque)
{
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HANDLE Handle = ((winCEfile *) opaque)->handle;
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DWORD SizeHigh;
DWORD SizeLow;
PHYSFS_sint64 retval;
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SizeLow = GetFileSize(Handle, &SizeHigh);
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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;
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/*assert(retval >= 0);*/
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} /* else */
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return retval;
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} /* __PHYSFS_platformFileLength */
int __PHYSFS_platformEOF(void *opaque)
{
PHYSFS_sint64 FilePosition;
int retval = 0;
/* Get the current position in the file */
if ((FilePosition = __PHYSFS_platformTell(opaque)) != 0)
{
/* Non-zero if EOF is equal to the file length */
retval = FilePosition == __PHYSFS_platformFileLength(opaque);
} /* if */
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return retval;
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} /* __PHYSFS_platformEOF */
int __PHYSFS_platformFlush(void *opaque)
{
winCEfile *fh = ((winCEfile *) opaque);
if (!fh->readonly)
BAIL_IF_MACRO(!FlushFileBuffers(fh->handle), win32strerror(), 0);
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return 1;
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} /* __PHYSFS_platformFlush */
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void __PHYSFS_platformClose(void *opaque)
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{
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HANDLE Handle = ((winCEfile *) opaque)->handle;
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(void) CloseHandle(Handle); /* ignore errors. You should have flushed! */
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allocator.Free(opaque);
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} /* __PHYSFS_platformClose */
int __PHYSFS_platformDelete(const char *path)
{
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wchar_t *w_path = NULL;
UTF8_TO_UNICODE_STACK_MACRO(w_path, path);
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/* If filename is a folder */
if (GetFileAttributes(w_path) == FILE_ATTRIBUTE_DIRECTORY)
{
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int retval = !RemoveDirectory(w_path);
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__PHYSFS_smallFree(w_path);
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BAIL_IF_MACRO(retval, win32strerror(), 0);
} /* if */
else
{
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int retval = !DeleteFile(w_path);
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__PHYSFS_smallFree(w_path);
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BAIL_IF_MACRO(retval, win32strerror(), 0);
} /* else */
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return 1; /* if you got here, it worked. */
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} /* __PHYSFS_platformDelete */
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/* Shamelessly copied from platform_windows.c */
static PHYSFS_sint64 FileTimeToPhysfsTime(const FILETIME *ft)
{
SYSTEMTIME st_utc;
SYSTEMTIME st_localtz;
TIME_ZONE_INFORMATION tzi;
DWORD tzid;
PHYSFS_sint64 retval;
struct tm tm;
BAIL_IF_MACRO(!FileTimeToSystemTime(ft, &st_utc), winApiStrError(), -1);
tzid = GetTimeZoneInformation(&tzi);
BAIL_IF_MACRO(tzid == TIME_ZONE_ID_INVALID, winApiStrError(), -1);
/* (This API is unsupported and fails on non-NT systems. */
if (!SystemTimeToTzSpecificLocalTime(&tzi, &st_utc, &st_localtz))
{
/* do it by hand. Grumble... */
ULARGE_INTEGER ui64;
FILETIME new_ft;
ui64.LowPart = ft->dwLowDateTime;
ui64.HighPart = ft->dwHighDateTime;
if (tzid == TIME_ZONE_ID_STANDARD)
tzi.Bias += tzi.StandardBias;
else if (tzid == TIME_ZONE_ID_DAYLIGHT)
tzi.Bias += tzi.DaylightBias;
/* convert from minutes to 100-nanosecond increments... */
ui64.QuadPart -= (((LONGLONG) tzi.Bias) * (600000000));
/* Move it back into a FILETIME structure... */
new_ft.dwLowDateTime = ui64.LowPart;
new_ft.dwHighDateTime = ui64.HighPart;
/* Convert to something human-readable... */
if (!FileTimeToSystemTime(&new_ft, &st_localtz))
BAIL_MACRO(winApiStrError(), -1);
} /* if */
/* Convert to a format that mktime() can grok... */
tm.tm_sec = st_localtz.wSecond;
tm.tm_min = st_localtz.wMinute;
tm.tm_hour = st_localtz.wHour;
tm.tm_mday = st_localtz.wDay;
tm.tm_mon = st_localtz.wMonth - 1;
tm.tm_year = st_localtz.wYear - 1900;
tm.tm_wday = -1 /*st_localtz.wDayOfWeek*/;
tm.tm_yday = -1;
tm.tm_isdst = -1;
/* Convert to a format PhysicsFS can grok... */
retval = (PHYSFS_sint64) mktime(&tm);
BAIL_IF_MACRO(retval == -1, strerror(errno), -1);
return retval;
} /* FileTimeToPhysfsTime */
int __PHYSFS_platformStat(const char *filename, int *exists, PHYSFS_Stat *stat)
{
WIN32_FIND_DATA winstat;
const HANDLE searchhandle = FindFirstFile(filename, &winstat);
if (searchhandle == INVALID_HANDLE_VALUE) /* call failed? */
{
/* !!! FIXME: FindFirstFile() doesn't set errno. Use GetLastError()?. */
if (errno == ERROR_FILE_NOT_FOUND)
{
*exists = 0;
return 0;
} /* if */
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BAIL_MACRO(win32strerror, 0);
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} /* if */
FindClose(searchhandle); /* close handle, not needed anymore */
*exists = 1;
if(winstat.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
stat->filetype = PHYSFS_FILETYPE_DIRECTORY;
else if (winstat.dwFileAttributes & (FILE_ATTRIBUTE_OFFLINE | FILE_ATTRIBUTE_ROMMODULE))
stat->filetype = PHYSFS_FILETYPE_OTHER;
else
stat->filetype = PHYSFS_FILETYPE_OTHER; /* !!! FIXME: _REGULAR? */
if (stat->filetype == PHYSFS_FILETYPE_REGULAR)
stat->filesize = (((PHYSFS_uint64) winstat.nFileSizeHigh) << 32) | winstat.nFileSizeLow;
stat->modtime = FileTimeToPhysfsTime(&winstat.ftLastWriteTime);
stat->accesstime = FileTimeToPhysfsTime(&winstat.ftLastAccessTime);
stat->createtime = FileTimeToPhysfsTime(&winstat.ftCreationTime);
stat->readonly = ((winstat.dwFileAttributes & (FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_INROM)) != 0);
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return 1;
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} /* __PHYSFS_platformStat */
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/*
* !!! 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.
*/
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void *__PHYSFS_platformCreateMutex(void)
{
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return ((void *) CreateMutex(NULL, FALSE, NULL));
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} /* __PHYSFS_platformCreateMutex */
void __PHYSFS_platformDestroyMutex(void *mutex)
{
CloseHandle((HANDLE) mutex);
} /* __PHYSFS_platformDestroyMutex */
int __PHYSFS_platformGrabMutex(void *mutex)
{
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return (WaitForSingleObject((HANDLE) mutex, INFINITE) != WAIT_FAILED);
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} /* __PHYSFS_platformGrabMutex */
void __PHYSFS_platformReleaseMutex(void *mutex)
{
ReleaseMutex((HANDLE) mutex);
} /* __PHYSFS_platformReleaseMutex */
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/* !!! FIXME: Don't use C runtime for allocators? */
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int __PHYSFS_platformSetDefaultAllocator(PHYSFS_Allocator *a)
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{
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return 0; /* just use malloc() and friends. */
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} /* __PHYSFS_platformSetDefaultAllocator */
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#endif /* PHYSFS_PLATFORM_POCKETPC */
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/* end of pocketpc.c ... */