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physfs/platform/win32.c

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/*
* Win32 support routines for PhysicsFS.
*
* Please see the file LICENSE in the source's root directory.
*
* This file written by Ryan C. Gordon, and made sane by Gregory S. Read.
*/
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <time.h>
#include <assert.h>
#define __PHYSICSFS_INTERNAL__
#include "physfs_internal.h"
#define LOWORDER_UINT64(pos) (PHYSFS_uint32)(pos & 0x00000000FFFFFFFF)
#define HIGHORDER_UINT64(pos) (PHYSFS_uint32)(pos & 0xFFFFFFFF00000000)
const char *__PHYSFS_platformDirSeparator = "\\";
static int runningNT = 0; /* TRUE if NT derived OS */
static OSVERSIONINFO OSVersionInfo; /* Information about the OS */
static char *ProfileDirectory = NULL; /* User profile folder */
/* Users without the platform SDK don't have this defined. The original docs
for SetFilePointer() just said to compare with 0xFFFFFFF, so this should
work as desired */
#ifndef INVALID_SET_FILE_POINTER
#define INVALID_SET_FILE_POINTER 0xFFFFFFFF
#endif
/*
* 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];
FormatMessage(
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), /* Default language */
msgbuf,
sizeof (msgbuf) / sizeof (TCHAR),
NULL
);
return((const char *) msgbuf);
} /* win32strerror */
/*
* Uninitialize any NT specific stuff done in doNTInit().
*
* Return zero if there was a catastrophic failure and non-zero otherwise.
*/
static int doNTDeinit(void)
{
/* nothing NT-specific to deinit at this point. */
return 1; /* It's all good */
} /* doNTDeinit */
typedef BOOL (STDMETHODCALLTYPE FAR * LPFNGETUSERPROFILEDIR) (
HANDLE hToken,
LPTSTR lpProfileDir,
LPDWORD lpcchSize);
/*
* Initialize any NT specific stuff. This includes any OS based on NT.
*
* Return zero if there was a catastrophic failure and non-zero otherwise.
*/
static int doNTInit(void)
{
DWORD pathsize = 0;
char dummy[1];
BOOL rc = 0;
HANDLE ProcessHandle = NULL; /* Current process handle */
HANDLE AccessTokenHandle = NULL; /* Security handle to process */
LPFNGETUSERPROFILEDIR GetUserProfileDirectory = NULL;
HMODULE lib = NULL;
const char *err = NULL;
/* Hooray for spaghetti code! */
lib = LoadLibrary("userenv.dll");
if (!lib)
goto ntinit_failed;
/* !!! FIXME: Handle Unicode? */
GetUserProfileDirectory = (LPFNGETUSERPROFILEDIR)
GetProcAddress(lib, "GetUserProfileDirectoryA");
if (!GetUserProfileDirectory)
goto ntinit_failed;
/* Create a process handle associated with the current process ID */
ProcessHandle = GetCurrentProcess();
/* Create a process access token handle */
if(!OpenProcessToken(ProcessHandle, TOKEN_QUERY, &AccessTokenHandle))
goto ntinit_failed; /* we need that token to get the profile dir. */
/* Should fail. Will write the size of the profile path in pathsize */
/* Second parameter can't be NULL or the function fails. */
rc = GetUserProfileDirectory(AccessTokenHandle, dummy, &pathsize);
assert(!rc); /* success?! */
/* Allocate memory for the profile directory */
ProfileDirectory = (char *) malloc(pathsize);
if (ProfileDirectory == NULL)
{
err = ERR_OUT_OF_MEMORY;
goto ntinit_failed;
} /* if */
/* Try to get the profile directory */
if(!GetUserProfileDirectory(AccessTokenHandle, ProfileDirectory, &pathsize))
goto ntinit_failed;
goto ntinit_succeeded; /* We made it: hit the showers. */
ntinit_failed:
if (err == NULL) /* set an error string if we haven't yet. */
__PHYSFS_setError(win32strerror());
if (ProfileDirectory != NULL)
{
free(ProfileDirectory);
ProfileDirectory = NULL;
} /* if */
/* drop through and clean up the rest of the stuff... */
ntinit_succeeded:
if (lib != NULL)
FreeLibrary(lib);
if (AccessTokenHandle != NULL)
CloseHandle(AccessTokenHandle);
return ((err == NULL) ? 1 : 0);
} /* doNTInit */
static BOOL MediaInDrive(const char *DriveLetter)
{
UINT OldErrorMode;
DWORD DummyValue;
BOOL ReturnValue;
/* Prevent windows warning message to appear when checking media size */
OldErrorMode = SetErrorMode(SEM_FAILCRITICALERRORS);
/* If this function succeeds, there's media in the drive */
ReturnValue = GetDiskFreeSpace(DriveLetter, &DummyValue, &DummyValue, &DummyValue, &DummyValue);
/* Revert back to old windows error handler */
SetErrorMode(OldErrorMode);
return ReturnValue;
} /* MediaInDrive */
char **__PHYSFS_platformDetectAvailableCDs(void)
{
char **retval = (char **) malloc(sizeof (char *));
int cd_count = 1; /* We count the NULL entry. */
char drive_str[4] = "x:\\";
for (drive_str[0] = 'A'; drive_str[0] <= 'Z'; drive_str[0]++)
{
if (GetDriveType(drive_str) == DRIVE_CDROM && MediaInDrive(drive_str))
{
char **tmp = realloc(retval, sizeof (char *) * cd_count + 1);
if (tmp)
{
retval = tmp;
retval[cd_count-1] = (char *) malloc(4);
if (retval[cd_count-1])
{
strcpy(retval[cd_count-1], drive_str);
cd_count++;
} /* if */
} /* if */
} /* if */
} /* for */
retval[cd_count - 1] = NULL;
return(retval);
} /* __PHYSFS_detectAvailableCDs */
static char *getExePath(const char *argv0)
{
char *filepart = NULL;
char *retval;
DWORD buflen;
retval = (char *) malloc(sizeof (TCHAR) * (MAX_PATH + 1));
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
buflen = GetModuleFileName(NULL, retval, MAX_PATH + 1);
if (buflen == 0)
{
const char *err = win32strerror();
free(retval);
BAIL_MACRO(err, NULL);
} /* if */
retval[buflen] = '\0'; /* does API always null-terminate the string? */
/* make sure the string was not truncated. */
if (__PHYSFS_platformStricmp(&retval[buflen - 4], ".exe") == 0)
{
char *ptr = strrchr(retval, '\\');
if (ptr != NULL)
{
*(ptr + 1) = '\0'; /* chop off filename. */
/* free up the bytes we didn't actually use. */
ptr = (char *) realloc(retval, strlen(retval) + 1);
if (ptr != NULL)
retval = ptr;
return(retval);
} /* if */
} /* if */
/* if any part of the previous approach failed, try SearchPath()... */
buflen = SearchPath(NULL, argv0, NULL, buflen, NULL, NULL);
retval = (char *) realloc(retval, buflen);
BAIL_IF_MACRO(!retval, ERR_OUT_OF_MEMORY, NULL);
SearchPath(NULL, argv0, NULL, buflen, retval, &filepart);
return(retval);
} /* getExePath */
char *__PHYSFS_platformCalcBaseDir(const char *argv0)
{
if (strchr(argv0, '\\') != NULL) /* default behaviour can handle this. */
return(NULL);
return(getExePath(argv0));
} /* __PHYSFS_platformCalcBaseDir */
char *__PHYSFS_platformGetUserName(void)
{
DWORD bufsize = 0;
LPTSTR retval = NULL;
if (GetUserName(NULL, &bufsize) == 0) /* This SHOULD fail. */
{
retval = (LPTSTR) malloc(bufsize);
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
if (GetUserName(retval, &bufsize) == 0) /* ?! */
{
__PHYSFS_setError(win32strerror());
free(retval);
retval = NULL;
} /* if */
} /* if */
return((char *) retval);
} /* __PHYSFS_platformGetUserName */
char *__PHYSFS_platformGetUserDir(void)
{
char *retval = (char *) malloc(strlen(ProfileDirectory) + 1);
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
strcpy(retval, ProfileDirectory); /* calculated at init time. */
return retval;
} /* __PHYSFS_platformGetUserDir */
PHYSFS_uint64 __PHYSFS_platformGetThreadID(void)
{
return((PHYSFS_uint64)GetCurrentThreadId());
} /* __PHYSFS_platformGetThreadID */
/* ...make this Cygwin AND Visual C friendly... */
int __PHYSFS_platformStricmp(const char *x, const char *y)
{
#if (defined _MSC_VER)
return(stricmp(x, y));
#else
int ux, uy;
do
{
ux = toupper((int) *x);
uy = toupper((int) *y);
if (ux > uy)
return(1);
else if (ux < uy)
return(-1);
x++;
y++;
} while ((ux) && (uy));
return(0);
#endif
} /* __PHYSFS_platformStricmp */
int __PHYSFS_platformExists(const char *fname)
{
return(GetFileAttributes(fname) != 0xffffffff);
} /* __PHYSFS_platformExists */
int __PHYSFS_platformIsSymLink(const char *fname)
{
return(0); /* no symlinks on win32. */
} /* __PHYSFS_platformIsSymlink */
int __PHYSFS_platformIsDirectory(const char *fname)
{
return((GetFileAttributes(fname) & FILE_ATTRIBUTE_DIRECTORY) != 0);
} /* __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 = 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 */
/* Much like my college days, try to sleep for 10 milliseconds at a time... */
void __PHYSFS_platformTimeslice(void)
{
Sleep(10);
} /* __PHYSFS_platformTimeslice */
LinkedStringList *__PHYSFS_platformEnumerateFiles(const char *dirname,
int omitSymLinks)
{
LinkedStringList *retval = NULL;
LinkedStringList *l = NULL;
LinkedStringList *prev = NULL;
HANDLE dir;
WIN32_FIND_DATA ent;
char *SearchPath;
size_t len = strlen(dirname);
/* Allocate a new string for path, maybe '\\', "*", and NULL terminator */
SearchPath = (char *) _alloca(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, "*");
dir = FindFirstFile(SearchPath, &ent);
BAIL_IF_MACRO(dir == INVALID_HANDLE_VALUE, win32strerror(), NULL);
do
{
if (strcmp(ent.cFileName, ".") == 0)
continue;
if (strcmp(ent.cFileName, "..") == 0)
continue;
l = (LinkedStringList *) malloc(sizeof (LinkedStringList));
if (l == NULL)
break;
l->str = (char *) malloc(strlen(ent.cFileName) + 1);
if (l->str == NULL)
{
free(l);
break;
} /* if */
strcpy(l->str, ent.cFileName);
if (retval == NULL)
retval = l;
else
prev->next = l;
prev = l;
l->next = NULL;
} while (FindNextFile(dir, &ent) != 0);
FindClose(dir);
return(retval);
} /* __PHYSFS_platformEnumerateFiles */
char *__PHYSFS_platformCurrentDir(void)
{
LPTSTR retval;
DWORD buflen = 0;
buflen = GetCurrentDirectory(buflen, NULL);
retval = (LPTSTR) malloc(sizeof (TCHAR) * (buflen + 2));
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
GetCurrentDirectory(buflen, retval);
if (retval[buflen - 2] != '\\')
strcat(retval, "\\");
return((char *) retval);
} /* __PHYSFS_platformCurrentDir */
/* this could probably use a cleanup. */
char *__PHYSFS_platformRealPath(const char *path)
{
char *retval = NULL;
char *p = NULL;
BAIL_IF_MACRO(path == NULL, ERR_INVALID_ARGUMENT, NULL);
BAIL_IF_MACRO(*path == '\0', ERR_INVALID_ARGUMENT, NULL);
retval = (char *) malloc(MAX_PATH);
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
/*
* If in \\server\path format, it's already an absolute path.
* We'll need to check for "." and ".." dirs, though, just in case.
*/
if ((path[0] == '\\') && (path[1] == '\\'))
strcpy(retval, path);
else
{
char *currentDir = __PHYSFS_platformCurrentDir();
if (currentDir == NULL)
{
free(retval);
BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
} /* if */
if (path[1] == ':') /* drive letter specified? */
{
/*
* Apparently, "D:mypath" is the same as "D:\\mypath" if
* D: is not the current drive. However, if D: is the
* current drive, then "D:mypath" is a relative path. Ugh.
*/
if (path[2] == '\\') /* maybe an absolute path? */
strcpy(retval, path);
else /* definitely an absolute path. */
{
if (path[0] == currentDir[0]) /* current drive; relative. */
{
strcpy(retval, currentDir);
strcat(retval, path + 2);
} /* if */
else /* not current drive; absolute. */
{
retval[0] = path[0];
retval[1] = ':';
retval[2] = '\\';
strcpy(retval + 3, path + 2);
} /* else */
} /* else */
} /* if */
else /* no drive letter specified. */
{
if (path[0] == '\\') /* absolute path. */
{
retval[0] = currentDir[0];
retval[1] = ':';
strcpy(retval + 2, path);
} /* if */
else
{
strcpy(retval, currentDir);
strcat(retval, path);
} /* else */
} /* else */
free(currentDir);
} /* else */
/* (whew.) Ok, now take out "." and ".." path entries... */
p = retval;
while ( (p = strstr(p, "\\.")) != NULL)
{
/* it's a "." entry that doesn't end the string. */
if (p[2] == '\\')
memmove(p + 1, p + 3, strlen(p + 3) + 1);
/* it's a "." entry that ends the string. */
else if (p[2] == '\0')
p[0] = '\0';
/* it's a ".." entry. */
else if (p[2] == '.')
{
char *prevEntry = p - 1;
while ((prevEntry != retval) && (*prevEntry != '\\'))
prevEntry--;
if (prevEntry == retval) /* make it look like a "." entry. */
memmove(p + 1, p + 2, strlen(p + 2) + 1);
else
{
if (p[3] != '\0') /* doesn't end string. */
*prevEntry = '\0';
else /* ends string. */
memmove(prevEntry + 1, p + 4, strlen(p + 4) + 1);
p = prevEntry;
} /* else */
} /* else if */
else
{
p++; /* look past current char. */
} /* else */
} /* while */
/* shrink the retval's memory block if possible... */
p = (char *) realloc(retval, strlen(retval) + 1);
if (p != NULL)
retval = p;
return(retval);
} /* __PHYSFS_platformRealPath */
int __PHYSFS_platformMkDir(const char *path)
{
DWORD rc = CreateDirectory(path, NULL);
BAIL_IF_MACRO(rc == 0, win32strerror(), 0);
return(1);
} /* __PHYSFS_platformMkDir */
/*
* Get OS info and save it.
*
* Returns non-zero if successful, otherwise it returns zero on failure.
*/
int getOSInfo(void)
{
/* Get OS info */
OSVersionInfo.dwOSVersionInfoSize = sizeof(OSVersionInfo);
BAIL_IF_MACRO(!GetVersionEx(&OSVersionInfo), win32strerror(), 0);
/* Set to TRUE if we are runnign a WinNT based OS 4.0 or greater */
runningNT = (OSVersionInfo.dwPlatformId == VER_PLATFORM_WIN32_NT) &&
(OSVersionInfo.dwMajorVersion > 3);
return 1;
}
int __PHYSFS_platformInit(void)
{
BAIL_IF_MACRO(!getOSInfo(), NULL, 0);
/* If running an NT system (NT/Win2k/XP, etc...) */
if(runningNT)
{
BAIL_IF_MACRO(!doNTInit(), NULL, 0);
} /* if */
else
{
/* Profile directory is the exe path on 95/98/ME systems. */
ProfileDirectory = getExePath(NULL);
BAIL_IF_MACRO(ProfileDirectory == NULL, win32strerror(), 0);
} /* else */
return 1; /* It's all good */
}
int __PHYSFS_platformDeinit(void)
{
if (runningNT)
{
BAIL_IF_MACRO(!doNTDeinit(), NULL, 0);
} /* if */
if (ProfileDirectory != NULL)
{
free(ProfileDirectory);
ProfileDirectory = NULL;
} /* if */
return 1; /* It's all good */
}
void *__PHYSFS_platformOpenRead(const char *filename)
{
HANDLE FileHandle;
/* Open an existing file for read only. File can be opened by others
who request read access on the file only. */
FileHandle = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
BAIL_IF_MACRO(FileHandle == INVALID_HANDLE_VALUE, win32strerror(), NULL);
return (void *)FileHandle;
}
void *__PHYSFS_platformOpenWrite(const char *filename)
{
HANDLE FileHandle;
/* Open an existing file for write only. File can be opened by others
who request read access to the file only */
FileHandle = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL,
CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
BAIL_IF_MACRO(FileHandle == INVALID_HANDLE_VALUE, win32strerror(), NULL);
return (void *)FileHandle;
}
void *__PHYSFS_platformOpenAppend(const char *filename)
{
HANDLE FileHandle;
/* Open an existing file for appending only. File can be opened by others
who request read access to the file only. */
FileHandle = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL,
OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
BAIL_IF_MACRO(FileHandle == INVALID_HANDLE_VALUE, win32strerror(), NULL);
return (void *)FileHandle;
}
PHYSFS_sint64 __PHYSFS_platformRead(void *opaque, void *buffer,
PHYSFS_uint32 size, PHYSFS_uint32 count)
{
HANDLE FileHandle;
DWORD CountOfBytesRead;
PHYSFS_sint64 retval;
/* Cast the generic handle to a Win32 handle */
FileHandle = (HANDLE)opaque;
/* Read data from the file */
/*!!! - uint32 might be a greater # than DWORD */
if(!ReadFile(FileHandle, buffer, count * size, &CountOfBytesRead, NULL))
{
BAIL_MACRO(win32strerror(), -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_sint64 __PHYSFS_platformWrite(void *opaque, void *buffer,
PHYSFS_uint32 size, PHYSFS_uint32 count)
{
HANDLE FileHandle;
DWORD CountOfBytesWritten;
PHYSFS_sint64 retval;
/* Cast the generic handle to a Win32 handle */
FileHandle = (HANDLE)opaque;
/* Read data from the file */
/*!!! - uint32 might be a greater # than DWORD */
if(!WriteFile(FileHandle, buffer, count * size, &CountOfBytesWritten, NULL))
{
BAIL_MACRO(win32strerror(), -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;
}
int __PHYSFS_platformSeek(void *opaque, PHYSFS_uint64 pos)
{
HANDLE FileHandle;
int retval;
DWORD HighOrderPos;
/* Cast the generic handle to a Win32 handle */
FileHandle = (HANDLE)opaque;
/* Get the high order 32-bits of the position */
HighOrderPos = HIGHORDER_UINT64(pos);
/*!!! SetFilePointer needs a signed 64-bit value. */
/* Move pointer "pos" count from start of file */
if((SetFilePointer(FileHandle, LOWORDER_UINT64(pos), &HighOrderPos, FILE_BEGIN)
== INVALID_SET_FILE_POINTER) && (GetLastError() != NO_ERROR))
{
/* An error occured. Set the error to GetLastError */
__PHYSFS_setError(win32strerror());
retval = 0;
}
else
{
/* No error occured */
retval = 1;
}
return retval;
}
PHYSFS_sint64 __PHYSFS_platformTell(void *opaque)
{
HANDLE FileHandle;
DWORD HighOrderPos = 0;
DWORD LowOrderPos;
PHYSFS_sint64 retval;
/* Cast the generic handle to a Win32 handle */
FileHandle = (HANDLE)opaque;
/* Get current position */
if(((LowOrderPos = SetFilePointer(FileHandle, 0, &HighOrderPos, FILE_CURRENT))
== INVALID_SET_FILE_POINTER) && (GetLastError() != NO_ERROR))
{
/* Set the error to GetLastError */
__PHYSFS_setError(win32strerror());
/* We errored out */
retval = 0;
}
else
{
/* Combine the high/low order to create the 64-bit position value */
retval = HighOrderPos;
retval = retval << 32;
retval |= LowOrderPos;
}
/*!!! Can't find a file pointer routine?!?!?!!?!?*/
return retval;
}
PHYSFS_sint64 __PHYSFS_platformFileLength(void *handle)
{
HANDLE FileHandle;
DWORD FileSizeHigh;
DWORD FileSizeLow;
PHYSFS_sint64 retval;
/* Cast the generic handle to a Win32 handle */
FileHandle = (HANDLE)handle;
/* Get the file size. Condition evaluates to TRUE if an error occured */
if(((FileSizeLow = GetFileSize(FileHandle, &FileSizeHigh))
== 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 = FileSizeHigh;
retval = retval << 32;
retval |= FileSizeLow;
} /* else */
return retval;
}
int __PHYSFS_platformEOF(void *opaque)
{
HANDLE FileHandle;
PHYSFS_sint64 FilePosition;
int retval = 0;
/* Cast the generic handle to a Win32 handle */
FileHandle = (HANDLE)opaque;
/* 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);
}
return retval;
}
int __PHYSFS_platformFlush(void *opaque)
{
HANDLE FileHandle;
int retval;
/* Cast the generic handle to a Win32 handle */
FileHandle = (HANDLE)opaque;
/* Close the file */
if(!(retval = FlushFileBuffers(FileHandle)))
{
/* Set the error to GetLastError */
__PHYSFS_setError(win32strerror());
}
return retval;
}
int __PHYSFS_platformClose(void *opaque)
{
HANDLE FileHandle;
int retval;
/* Cast the generic handle to a Win32 handle */
FileHandle = (HANDLE)opaque;
/* Close the file */
if(!(retval = CloseHandle(FileHandle)))
{
/* Set the error to GetLastError */
__PHYSFS_setError(win32strerror());
}
return retval;
}
int __PHYSFS_platformDelete(const char *path)
{
int retval;
/* If filename is a folder */
if(GetFileAttributes(path) == FILE_ATTRIBUTE_DIRECTORY)
{
retval = RemoveDirectory(path);
}
else
{
retval = DeleteFile(path);
}
if(!retval)
{
/* Set the error to GetLastError */
__PHYSFS_setError(win32strerror());
}
return retval;
}
void *__PHYSFS_platformCreateMutex(void)
{
return (void *)CreateMutex(NULL, FALSE, NULL);
}
void __PHYSFS_platformDestroyMutex(void *mutex)
{
CloseHandle((HANDLE)mutex);
}
int __PHYSFS_platformGrabMutex(void *mutex)
{
int retval;
if(WaitForSingleObject((HANDLE)mutex, INFINITE) == WAIT_FAILED)
{
/* Our wait failed for some unknown reason */
retval = 0;
}
else
{
/* Good to go */
retval = 1;
}
return retval;
}
void __PHYSFS_platformReleaseMutex(void *mutex)
{
ReleaseMutex((HANDLE)mutex);
}
static time_t FileTimeToTimeT(FILETIME *ft)
{
SYSTEMTIME st_utc;
SYSTEMTIME st_localtz;
TIME_ZONE_INFORMATION TimeZoneInfo;
struct tm tm;
FileTimeToSystemTime(ft, &st_utc);
GetTimeZoneInformation(&TimeZoneInfo);
SystemTimeToTzSpecificLocalTime(&TimeZoneInfo, &st_utc, &st_localtz);
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 = st_localtz.wDayOfWeek;
tm.tm_yday = -1;
tm.tm_isdst = -1;
return mktime(&tm);
} /* FileTimeToTimeT */
PHYSFS_sint64 __PHYSFS_platformGetLastModTime(const char *fname)
{
WIN32_FILE_ATTRIBUTE_DATA AttributeData;
GetFileAttributesEx(fname, GetFileExInfoStandard, &AttributeData);
/* 0 return value indicates an error or not supported */
if(AttributeData.ftLastWriteTime.dwHighDateTime == 0 &&
AttributeData.ftLastWriteTime.dwLowDateTime == 0)
{
/* Return error */
BAIL_MACRO(win32strerror(), -1);
}
/* Return UNIX time_t version of last write time */
return (PHYSFS_sint64)FileTimeToTimeT(&AttributeData.ftLastWriteTime);
/*return (PHYSFS_sint64)FileTimeToTimeT(&AttributeData.ftCreationTime);*/
} /* __PHYSFS_platformGetLastModTime */
/* end of win32.c ... */
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