/*
** Open a file.
*/
static int winOpen(
sqlite3_vfs pVfs, /* Not used */
string zName, /* Name of the file (UTF-8) */
sqlite3_file pFile, /* Write the SQLite file handle here */
int flags, /* Open mode flags */
ref int pOutFlags /* Status return flags */
)
{
if (pFile.fs != null)
{
return(SQLITE_OK);
}
//HANDLE h;
//pFile.fs = null;
//fs = null;
FileAccess dwDesiredAccess;
FileShare dwShareMode;
FileMode dwCreationDisposition;
string zConverted; /* Filename in OS encoding */
string zUtf8Name = zName; /* Filename in UTF-8 encoding */
StringBuilder zTmpname = new StringBuilder(MAX_PATH + 1); /* Buffer used to create temp filename */
Debug.Assert(pFile != null);
UNUSED_PARAMETER(pVfs);
/* If the second argument to this function is NULL, generate a
** temporary file name to use
*/
if (String.IsNullOrEmpty(zUtf8Name))
{
int rc = getTempname(MAX_PATH + 1, zTmpname);
if (rc != SQLITE_OK)
{
return(rc);
}
zUtf8Name = zTmpname.ToString();
}
// /* Convert the filename to the system encoding. */
zConverted = zUtf8Name;// convertUtf8Filename( zUtf8Name );
if (String.IsNullOrEmpty(zConverted))
{
return(SQLITE_NOMEM);
}
if ((flags & SQLITE_OPEN_READWRITE) != 0)
{
dwDesiredAccess = FileAccess.Read | FileAccess.Write; // GENERIC_READ | GENERIC_WRITE;
}
else
{
dwDesiredAccess = FileAccess.Read; // GENERIC_READ;
}
/* SQLITE_OPEN_EXCLUSIVE is used to make sure that a new file is
** created. SQLite doesn't use it to indicate "exclusive access"
** as it is usually understood.
*/
Debug.Assert(0 == (flags & SQLITE_OPEN_EXCLUSIVE) || (flags & SQLITE_OPEN_CREATE) != 0);
if ((flags & SQLITE_OPEN_EXCLUSIVE) != 0)
{
/* Creates a new file, only if it does not already exist. */
/* If the file exists, it fails. */
dwCreationDisposition = FileMode.CreateNew;// CREATE_NEW;
}
else if ((flags & SQLITE_OPEN_CREATE) != 0)
{
/* Open existing file, or create if it doesn't exist */
dwCreationDisposition = FileMode.OpenOrCreate;// OPEN_ALWAYS;
}
else
{
/* Opens a file, only if it exists. */
dwCreationDisposition = FileMode.Open; //OPEN_EXISTING;
}
dwShareMode = FileShare.Read | FileShare.Write; // FILE_SHARE_READ | FILE_SHARE_WRITE;
if ((flags & SQLITE_OPEN_DELETEONCLOSE) != 0)
{
}
else
{
}
/* Reports from the internet are that performance is always
** better if FILE_FLAG_RANDOM_ACCESS is used. Ticket #2699. */
if (isNT())
{
int retries = 3;
//while ( ( pFile.fs == null ) && ( retries > 0 ) )
while ((pFile.fs == null) && (retries > 0))
{
try
{
retries--;
//pFile.fs = new IsolatedStorageFileStream(zConverted, dwCreationDisposition, dwDesiredAccess, dwShareMode, pFile.store);
//pFile.fs = new IsolatedStorageFileStream(zConverted, dwCreationDisposition, dwDesiredAccess, dwShareMode, store);
pFile.fs = new IsolatedStorageFileStream(zConverted, FileMode.OpenOrCreate, dwDesiredAccess, dwShareMode, store);
}
catch (Exception e)
{
Thread.Sleep(100);
}
}
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
** Since the ASCII version of these Windows API do not exist for WINCE,
** it's important to not reference them for WINCE builds.
*/
}
//if ( pFile.fs == null
if (pFile.fs == null
||
//!pFile.fs.CanRead
!pFile.fs.CanRead
)
{
if ((flags & SQLITE_OPEN_READWRITE) != 0)
{
return(winOpen(pVfs, zName, pFile,
((flags | SQLITE_OPEN_READONLY) & ~SQLITE_OPEN_READWRITE), ref pOutFlags));
}
else
{
return(SQLITE_CANTOPEN_BKPT());
}
}
if ((flags & SQLITE_OPEN_READWRITE) != 0)
{
pOutFlags = SQLITE_OPEN_READWRITE;
}
else
{
pOutFlags = SQLITE_OPEN_READONLY;
}
//}
pFile.Clear(); // memset(pFile, 0, sizeof(*pFile));
pFile.pMethods = winIoMethod;
pFile.lastErrno = NO_ERROR;
pFile.sectorSize = (ulong)getSectorSize(pVfs, zUtf8Name);
return(SQLITE_OK);
}
/*
** Open a file.
*/
static int winOpen(
sqlite3_vfs pVfs, /* Not used */
string zName, /* Name of the file (UTF-8) */
sqlite3_file pFile, /* Write the SQLite file handle here */
int flags, /* Open mode flags */
ref int pOutFlags /* Status return flags */
)
{
if (pFile.fs != null)
return SQLITE_OK;
//HANDLE h;
//pFile.fs = null;
//fs = null;
FileAccess dwDesiredAccess;
FileShare dwShareMode;
FileMode dwCreationDisposition;
string zConverted; /* Filename in OS encoding */
string zUtf8Name = zName; /* Filename in UTF-8 encoding */
StringBuilder zTmpname = new StringBuilder( MAX_PATH + 1 ); /* Buffer used to create temp filename */
Debug.Assert( pFile != null );
UNUSED_PARAMETER( pVfs );
/* If the second argument to this function is NULL, generate a
** temporary file name to use
*/
if ( String.IsNullOrEmpty( zUtf8Name ) )
{
int rc = getTempname( MAX_PATH + 1, zTmpname );
if ( rc != SQLITE_OK )
{
return rc;
}
zUtf8Name = zTmpname.ToString();
}
// /* Convert the filename to the system encoding. */
zConverted = zUtf8Name;// convertUtf8Filename( zUtf8Name );
if ( String.IsNullOrEmpty( zConverted ) )
{
return SQLITE_NOMEM;
}
if ( ( flags & SQLITE_OPEN_READWRITE ) != 0 )
{
dwDesiredAccess = FileAccess.Read | FileAccess.Write; // GENERIC_READ | GENERIC_WRITE;
}
else
{
dwDesiredAccess = FileAccess.Read; // GENERIC_READ;
}
/* SQLITE_OPEN_EXCLUSIVE is used to make sure that a new file is
** created. SQLite doesn't use it to indicate "exclusive access"
** as it is usually understood.
*/
Debug.Assert( 0 == ( flags & SQLITE_OPEN_EXCLUSIVE ) || ( flags & SQLITE_OPEN_CREATE ) != 0 );
if ( ( flags & SQLITE_OPEN_EXCLUSIVE ) != 0 )
{
/* Creates a new file, only if it does not already exist. */
/* If the file exists, it fails. */
dwCreationDisposition = FileMode.CreateNew;// CREATE_NEW;
}
else if ( ( flags & SQLITE_OPEN_CREATE ) != 0 )
{
/* Open existing file, or create if it doesn't exist */
dwCreationDisposition = FileMode.OpenOrCreate;// OPEN_ALWAYS;
}
else
{
/* Opens a file, only if it exists. */
dwCreationDisposition = FileMode.Open;//OPEN_EXISTING;
}
dwShareMode = FileShare.Read | FileShare.Write;// FILE_SHARE_READ | FILE_SHARE_WRITE;
if ( ( flags & SQLITE_OPEN_DELETEONCLOSE ) != 0 )
{
}
else
{
}
/* Reports from the internet are that performance is always
** better if FILE_FLAG_RANDOM_ACCESS is used. Ticket #2699. */
if ( isNT() )
{
int retries = 3;
//while ( ( pFile.fs == null ) && ( retries > 0 ) )
while ((pFile.fs == null) && (retries > 0))
try
{
retries--;
//pFile.fs = new IsolatedStorageFileStream(zConverted, dwCreationDisposition, dwDesiredAccess, dwShareMode, pFile.store);
pFile.fs = new IsolatedStorageFileStream(zConverted, dwCreationDisposition, dwDesiredAccess, dwShareMode, store);
}
catch ( Exception e )
{
Thread.Sleep( 100 );
}
/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed.
** Since the ASCII version of these Windows API do not exist for WINCE,
** it's important to not reference them for WINCE builds.
*/
}
//if ( pFile.fs == null
if (pFile.fs == null
||
//!pFile.fs.CanRead
!pFile.fs.CanRead
)
{
if ( ( flags & SQLITE_OPEN_READWRITE ) != 0 )
{
return winOpen( pVfs, zName, pFile,
( ( flags | SQLITE_OPEN_READONLY ) & ~SQLITE_OPEN_READWRITE ), ref pOutFlags );
}
else
{
return SQLITE_CANTOPEN_BKPT();
}
}
if ( ( flags & SQLITE_OPEN_READWRITE ) != 0 )
{
pOutFlags = SQLITE_OPEN_READWRITE;
}
else
{
pOutFlags = SQLITE_OPEN_READONLY;
}
//}
pFile.Clear(); // memset(pFile, 0, sizeof(*pFile));
pFile.pMethods = winIoMethod;
pFile.lastErrno = NO_ERROR;
pFile.sectorSize = (ulong)getSectorSize( pVfs, zUtf8Name );
return SQLITE_OK;
}
