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diff --git a/ext/pdo_sqlite/sqlite/src/os.h b/ext/pdo_sqlite/sqlite/src/os.h
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--- a/ext/pdo_sqlite/sqlite/src/os.h
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@@ -1,480 +0,0 @@
-/*
-** 2001 September 16
-**
-** The author disclaims copyright to this source code.  In place of
-** a legal notice, here is a blessing:
-**
-**    May you do good and not evil.
-**    May you find forgiveness for yourself and forgive others.
-**    May you share freely, never taking more than you give.
-**
-******************************************************************************
-**
-** This header file (together with is companion C source-code file
-** "os.c") attempt to abstract the underlying operating system so that
-** the SQLite library will work on both POSIX and windows systems.
-*/
-#ifndef _SQLITE_OS_H_
-#define _SQLITE_OS_H_
-
-/*
-** Figure out if we are dealing with Unix, Windows, or some other
-** operating system.
-*/
-#if !defined(OS_UNIX) && !defined(OS_OTHER)
-# define OS_OTHER 0
-# ifndef OS_WIN
-#   if defined(_WIN32) || defined(WIN32) || defined(__CYGWIN__) || defined(__MINGW32__) || defined(__BORLANDC__)
-#     define OS_WIN 1
-#     define OS_UNIX 0
-#     define OS_OS2 0
-#   elif defined(_EMX_) || defined(_OS2) || defined(OS2) || defined(_OS2_) || defined(__OS2__)
-#     define OS_WIN 0
-#     define OS_UNIX 0
-#     define OS_OS2 1
-#   else
-#     define OS_WIN 0
-#     define OS_UNIX 1
-#     define OS_OS2 0
-#  endif
-# else
-#  define OS_UNIX 0
-#  define OS_OS2 0
-# endif
-#else
-# ifndef OS_WIN
-#  define OS_WIN 0
-# endif
-#endif
-
-
-/*
-** Define the maximum size of a temporary filename
-*/
-#if OS_WIN
-# include <windows.h>
-# define SQLITE_TEMPNAME_SIZE (MAX_PATH+50)
-#elif OS_OS2
-# define INCL_DOSDATETIME
-# define INCL_DOSFILEMGR
-# define INCL_DOSERRORS
-# define INCL_DOSMISC
-# define INCL_DOSPROCESS
-# include <os2.h>
-# define SQLITE_TEMPNAME_SIZE (CCHMAXPATHCOMP)
-#else
-# define SQLITE_TEMPNAME_SIZE 200
-#endif
-
-/* If the SET_FULLSYNC macro is not defined above, then make it
-** a no-op
-*/
-#ifndef SET_FULLSYNC
-# define SET_FULLSYNC(x,y)
-#endif
-
-/*
-** Temporary files are named starting with this prefix followed by 16 random
-** alphanumeric characters, and no file extension. They are stored in the
-** OS's standard temporary file directory, and are deleted prior to exit.
-** If sqlite is being embedded in another program, you may wish to change the
-** prefix to reflect your program's name, so that if your program exits
-** prematurely, old temporary files can be easily identified. This can be done
-** using -DTEMP_FILE_PREFIX=myprefix_ on the compiler command line.
-*/
-#ifndef TEMP_FILE_PREFIX
-# define TEMP_FILE_PREFIX "sqlite_"
-#endif
-
-/*
-** Define the interfaces for Unix, Windows, and OS/2.
-*/
-#if OS_UNIX
-#define sqlite3OsOpenReadWrite      sqlite3UnixOpenReadWrite
-#define sqlite3OsOpenExclusive      sqlite3UnixOpenExclusive
-#define sqlite3OsOpenReadOnly       sqlite3UnixOpenReadOnly
-#define sqlite3OsDelete             sqlite3UnixDelete
-#define sqlite3OsFileExists         sqlite3UnixFileExists
-#define sqlite3OsFullPathname       sqlite3UnixFullPathname
-#define sqlite3OsIsDirWritable      sqlite3UnixIsDirWritable
-#define sqlite3OsSyncDirectory      sqlite3UnixSyncDirectory
-#define sqlite3OsTempFileName       sqlite3UnixTempFileName
-#define sqlite3OsRandomSeed         sqlite3UnixRandomSeed
-#define sqlite3OsSleep              sqlite3UnixSleep
-#define sqlite3OsCurrentTime        sqlite3UnixCurrentTime
-#define sqlite3OsEnterMutex         sqlite3UnixEnterMutex
-#define sqlite3OsLeaveMutex         sqlite3UnixLeaveMutex
-#define sqlite3OsInMutex            sqlite3UnixInMutex
-#define sqlite3OsThreadSpecificData sqlite3UnixThreadSpecificData
-#define sqlite3OsMalloc             sqlite3GenericMalloc
-#define sqlite3OsRealloc            sqlite3GenericRealloc
-#define sqlite3OsFree               sqlite3GenericFree
-#define sqlite3OsAllocationSize     sqlite3GenericAllocationSize
-#endif
-#if OS_WIN
-#define sqlite3OsOpenReadWrite      sqlite3WinOpenReadWrite
-#define sqlite3OsOpenExclusive      sqlite3WinOpenExclusive
-#define sqlite3OsOpenReadOnly       sqlite3WinOpenReadOnly
-#define sqlite3OsDelete             sqlite3WinDelete
-#define sqlite3OsFileExists         sqlite3WinFileExists
-#define sqlite3OsFullPathname       sqlite3WinFullPathname
-#define sqlite3OsIsDirWritable      sqlite3WinIsDirWritable
-#define sqlite3OsSyncDirectory      sqlite3WinSyncDirectory
-#define sqlite3OsTempFileName       sqlite3WinTempFileName
-#define sqlite3OsRandomSeed         sqlite3WinRandomSeed
-#define sqlite3OsSleep              sqlite3WinSleep
-#define sqlite3OsCurrentTime        sqlite3WinCurrentTime
-#define sqlite3OsEnterMutex         sqlite3WinEnterMutex
-#define sqlite3OsLeaveMutex         sqlite3WinLeaveMutex
-#define sqlite3OsInMutex            sqlite3WinInMutex
-#define sqlite3OsThreadSpecificData sqlite3WinThreadSpecificData
-#define sqlite3OsMalloc             sqlite3GenericMalloc
-#define sqlite3OsRealloc            sqlite3GenericRealloc
-#define sqlite3OsFree               sqlite3GenericFree
-#define sqlite3OsAllocationSize     sqlite3GenericAllocationSize
-#endif
-#if OS_OS2
-#define sqlite3OsOpenReadWrite      sqlite3Os2OpenReadWrite
-#define sqlite3OsOpenExclusive      sqlite3Os2OpenExclusive
-#define sqlite3OsOpenReadOnly       sqlite3Os2OpenReadOnly
-#define sqlite3OsDelete             sqlite3Os2Delete
-#define sqlite3OsFileExists         sqlite3Os2FileExists
-#define sqlite3OsFullPathname       sqlite3Os2FullPathname
-#define sqlite3OsIsDirWritable      sqlite3Os2IsDirWritable
-#define sqlite3OsSyncDirectory      sqlite3Os2SyncDirectory
-#define sqlite3OsTempFileName       sqlite3Os2TempFileName
-#define sqlite3OsRandomSeed         sqlite3Os2RandomSeed
-#define sqlite3OsSleep              sqlite3Os2Sleep
-#define sqlite3OsCurrentTime        sqlite3Os2CurrentTime
-#define sqlite3OsEnterMutex         sqlite3Os2EnterMutex
-#define sqlite3OsLeaveMutex         sqlite3Os2LeaveMutex
-#define sqlite3OsInMutex            sqlite3Os2InMutex
-#define sqlite3OsThreadSpecificData sqlite3Os2ThreadSpecificData
-#define sqlite3OsMalloc             sqlite3GenericMalloc
-#define sqlite3OsRealloc            sqlite3GenericRealloc
-#define sqlite3OsFree               sqlite3GenericFree
-#define sqlite3OsAllocationSize     sqlite3GenericAllocationSize
-#endif
-
-
-
-
-/*
-** If using an alternative OS interface, then we must have an "os_other.h"
-** header file available for that interface.  Presumably the "os_other.h"
-** header file contains #defines similar to those above.
-*/
-#if OS_OTHER
-# include "os_other.h"
-#endif
-
-
-
-/*
-** Forward declarations
-*/
-typedef struct OsFile OsFile;
-typedef struct IoMethod IoMethod;
-
-/*
-** An instance of the following structure contains pointers to all
-** methods on an OsFile object.
-*/
-struct IoMethod {
-  int (*xClose)(OsFile**);
-  int (*xOpenDirectory)(OsFile*, const char*);
-  int (*xRead)(OsFile*, void*, int amt);
-  int (*xWrite)(OsFile*, const void*, int amt);
-  int (*xSeek)(OsFile*, i64 offset);
-  int (*xTruncate)(OsFile*, i64 size);
-  int (*xSync)(OsFile*, int);
-  void (*xSetFullSync)(OsFile *id, int setting);
-  int (*xFileHandle)(OsFile *id);
-  int (*xFileSize)(OsFile*, i64 *pSize);
-  int (*xLock)(OsFile*, int);
-  int (*xUnlock)(OsFile*, int);
-  int (*xLockState)(OsFile *id);
-  int (*xCheckReservedLock)(OsFile *id);
-};
-
-/*
-** The OsFile object describes an open disk file in an OS-dependent way.
-** The version of OsFile defined here is a generic version.  Each OS
-** implementation defines its own subclass of this structure that contains
-** additional information needed to handle file I/O.  But the pMethod
-** entry (pointing to the virtual function table) always occurs first
-** so that we can always find the appropriate methods.
-*/
-struct OsFile {
-  IoMethod const *pMethod;
-};
-
-/*
-** The following values may be passed as the second argument to
-** sqlite3OsLock(). The various locks exhibit the following semantics:
-**
-** SHARED:    Any number of processes may hold a SHARED lock simultaneously.
-** RESERVED:  A single process may hold a RESERVED lock on a file at
-**            any time. Other processes may hold and obtain new SHARED locks.
-** PENDING:   A single process may hold a PENDING lock on a file at
-**            any one time. Existing SHARED locks may persist, but no new
-**            SHARED locks may be obtained by other processes.
-** EXCLUSIVE: An EXCLUSIVE lock precludes all other locks.
-**
-** PENDING_LOCK may not be passed directly to sqlite3OsLock(). Instead, a
-** process that requests an EXCLUSIVE lock may actually obtain a PENDING
-** lock. This can be upgraded to an EXCLUSIVE lock by a subsequent call to
-** sqlite3OsLock().
-*/
-#define NO_LOCK         0
-#define SHARED_LOCK     1
-#define RESERVED_LOCK   2
-#define PENDING_LOCK    3
-#define EXCLUSIVE_LOCK  4
-
-/*
-** File Locking Notes:  (Mostly about windows but also some info for Unix)
-**
-** We cannot use LockFileEx() or UnlockFileEx() on Win95/98/ME because
-** those functions are not available.  So we use only LockFile() and
-** UnlockFile().
-**
-** LockFile() prevents not just writing but also reading by other processes.
-** A SHARED_LOCK is obtained by locking a single randomly-chosen 
-** byte out of a specific range of bytes. The lock byte is obtained at 
-** random so two separate readers can probably access the file at the 
-** same time, unless they are unlucky and choose the same lock byte.
-** An EXCLUSIVE_LOCK is obtained by locking all bytes in the range.
-** There can only be one writer.  A RESERVED_LOCK is obtained by locking
-** a single byte of the file that is designated as the reserved lock byte.
-** A PENDING_LOCK is obtained by locking a designated byte different from
-** the RESERVED_LOCK byte.
-**
-** On WinNT/2K/XP systems, LockFileEx() and UnlockFileEx() are available,
-** which means we can use reader/writer locks.  When reader/writer locks
-** are used, the lock is placed on the same range of bytes that is used
-** for probabilistic locking in Win95/98/ME.  Hence, the locking scheme
-** will support two or more Win95 readers or two or more WinNT readers.
-** But a single Win95 reader will lock out all WinNT readers and a single
-** WinNT reader will lock out all other Win95 readers.
-**
-** The following #defines specify the range of bytes used for locking.
-** SHARED_SIZE is the number of bytes available in the pool from which
-** a random byte is selected for a shared lock.  The pool of bytes for
-** shared locks begins at SHARED_FIRST. 
-**
-** These #defines are available in sqlite_aux.h so that adaptors for
-** connecting SQLite to other operating systems can use the same byte
-** ranges for locking.  In particular, the same locking strategy and
-** byte ranges are used for Unix.  This leaves open the possiblity of having
-** clients on win95, winNT, and unix all talking to the same shared file
-** and all locking correctly.  To do so would require that samba (or whatever
-** tool is being used for file sharing) implements locks correctly between
-** windows and unix.  I'm guessing that isn't likely to happen, but by
-** using the same locking range we are at least open to the possibility.
-**
-** Locking in windows is manditory.  For this reason, we cannot store
-** actual data in the bytes used for locking.  The pager never allocates
-** the pages involved in locking therefore.  SHARED_SIZE is selected so
-** that all locks will fit on a single page even at the minimum page size.
-** PENDING_BYTE defines the beginning of the locks.  By default PENDING_BYTE
-** is set high so that we don't have to allocate an unused page except
-** for very large databases.  But one should test the page skipping logic 
-** by setting PENDING_BYTE low and running the entire regression suite.
-**
-** Changing the value of PENDING_BYTE results in a subtly incompatible
-** file format.  Depending on how it is changed, you might not notice
-** the incompatibility right away, even running a full regression test.
-** The default location of PENDING_BYTE is the first byte past the
-** 1GB boundary.
-**
-*/
-#ifndef SQLITE_TEST
-#define PENDING_BYTE      0x40000000  /* First byte past the 1GB boundary */
-#else
-extern unsigned int sqlite3_pending_byte;
-#define PENDING_BYTE sqlite3_pending_byte
-#endif
-
-#define RESERVED_BYTE     (PENDING_BYTE+1)
-#define SHARED_FIRST      (PENDING_BYTE+2)
-#define SHARED_SIZE       510
-
-/*
-** Prototypes for operating system interface routines.
-*/
-int sqlite3OsClose(OsFile**);
-int sqlite3OsOpenDirectory(OsFile*, const char*);
-int sqlite3OsRead(OsFile*, void*, int amt);
-int sqlite3OsWrite(OsFile*, const void*, int amt);
-int sqlite3OsSeek(OsFile*, i64 offset);
-int sqlite3OsTruncate(OsFile*, i64 size);
-int sqlite3OsSync(OsFile*, int);
-void sqlite3OsSetFullSync(OsFile *id, int setting);
-int sqlite3OsFileHandle(OsFile *id);
-int sqlite3OsFileSize(OsFile*, i64 *pSize);
-int sqlite3OsLock(OsFile*, int);
-int sqlite3OsUnlock(OsFile*, int);
-int sqlite3OsLockState(OsFile *id);
-int sqlite3OsCheckReservedLock(OsFile *id);
-int sqlite3OsOpenReadWrite(const char*, OsFile**, int*);
-int sqlite3OsOpenExclusive(const char*, OsFile**, int);
-int sqlite3OsOpenReadOnly(const char*, OsFile**);
-int sqlite3OsDelete(const char*);
-int sqlite3OsFileExists(const char*);
-char *sqlite3OsFullPathname(const char*);
-int sqlite3OsIsDirWritable(char*);
-int sqlite3OsSyncDirectory(const char*);
-int sqlite3OsTempFileName(char*);
-int sqlite3OsRandomSeed(char*);
-int sqlite3OsSleep(int ms);
-int sqlite3OsCurrentTime(double*);
-void sqlite3OsEnterMutex(void);
-void sqlite3OsLeaveMutex(void);
-int sqlite3OsInMutex(int);
-ThreadData *sqlite3OsThreadSpecificData(int);
-void *sqlite3OsMalloc(int);
-void *sqlite3OsRealloc(void *, int);
-void sqlite3OsFree(void *);
-int sqlite3OsAllocationSize(void *);
-
-/*
-** If the SQLITE_ENABLE_REDEF_IO macro is defined, then the OS-layer
-** interface routines are not called directly but are invoked using
-** pointers to functions.  This allows the implementation of various
-** OS-layer interface routines to be modified at run-time.  There are
-** obscure but legitimate reasons for wanting to do this.  But for
-** most users, a direct call to the underlying interface is preferable
-** so the the redefinable I/O interface is turned off by default.
-*/
-#ifdef SQLITE_ENABLE_REDEF_IO
-
-/*
-** When redefinable I/O is enabled, a single global instance of the
-** following structure holds pointers to the routines that SQLite 
-** uses to talk with the underlying operating system.  Modify this
-** structure (before using any SQLite API!) to accomodate perculiar
-** operating system interfaces or behaviors.
-*/
-struct sqlite3OsVtbl {
-  int (*xOpenReadWrite)(const char*, OsFile**, int*);
-  int (*xOpenExclusive)(const char*, OsFile**, int);
-  int (*xOpenReadOnly)(const char*, OsFile**);
-
-  int (*xDelete)(const char*);
-  int (*xFileExists)(const char*);
-  char *(*xFullPathname)(const char*);
-  int (*xIsDirWritable)(char*);
-  int (*xSyncDirectory)(const char*);
-  int (*xTempFileName)(char*);
-
-  int (*xRandomSeed)(char*);
-  int (*xSleep)(int ms);
-  int (*xCurrentTime)(double*);
-
-  void (*xEnterMutex)(void);
-  void (*xLeaveMutex)(void);
-  int (*xInMutex)(int);
-  ThreadData *(*xThreadSpecificData)(int);
-
-  void *(*xMalloc)(int);
-  void *(*xRealloc)(void *, int);
-  void (*xFree)(void *);
-  int (*xAllocationSize)(void *);
-};
-
-/* Macro used to comment out routines that do not exists when there is
-** no disk I/O 
-*/
-#ifdef SQLITE_OMIT_DISKIO
-# define IF_DISKIO(X)  0
-#else
-# define IF_DISKIO(X)  X
-#endif
-
-#ifdef _SQLITE_OS_C_
-  /*
-  ** The os.c file implements the global virtual function table.
-  */
-  struct sqlite3OsVtbl sqlite3Os = {
-    IF_DISKIO( sqlite3OsOpenReadWrite ),
-    IF_DISKIO( sqlite3OsOpenExclusive ),
-    IF_DISKIO( sqlite3OsOpenReadOnly ),
-    IF_DISKIO( sqlite3OsDelete ),
-    IF_DISKIO( sqlite3OsFileExists ),
-    IF_DISKIO( sqlite3OsFullPathname ),
-    IF_DISKIO( sqlite3OsIsDirWritable ),
-    IF_DISKIO( sqlite3OsSyncDirectory ),
-    IF_DISKIO( sqlite3OsTempFileName ),
-    sqlite3OsRandomSeed,
-    sqlite3OsSleep,
-    sqlite3OsCurrentTime,
-    sqlite3OsEnterMutex,
-    sqlite3OsLeaveMutex,
-    sqlite3OsInMutex,
-    sqlite3OsThreadSpecificData,
-    sqlite3OsMalloc,
-    sqlite3OsRealloc,
-    sqlite3OsFree,
-    sqlite3OsAllocationSize
-  };
-#else
-  /*
-  ** Files other than os.c just reference the global virtual function table. 
-  */
-  extern struct sqlite3OsVtbl sqlite3Os;
-#endif /* _SQLITE_OS_C_ */
-
-
-/* This additional API routine is available with redefinable I/O */
-struct sqlite3OsVtbl *sqlite3_os_switch(void);
-
-
-/*
-** Redefine the OS interface to go through the virtual function table
-** rather than calling routines directly.
-*/
-#undef sqlite3OsOpenReadWrite
-#undef sqlite3OsOpenExclusive
-#undef sqlite3OsOpenReadOnly
-#undef sqlite3OsDelete
-#undef sqlite3OsFileExists
-#undef sqlite3OsFullPathname
-#undef sqlite3OsIsDirWritable
-#undef sqlite3OsSyncDirectory
-#undef sqlite3OsTempFileName
-#undef sqlite3OsRandomSeed
-#undef sqlite3OsSleep
-#undef sqlite3OsCurrentTime
-#undef sqlite3OsEnterMutex
-#undef sqlite3OsLeaveMutex
-#undef sqlite3OsInMutex
-#undef sqlite3OsThreadSpecificData
-#undef sqlite3OsMalloc
-#undef sqlite3OsRealloc
-#undef sqlite3OsFree
-#undef sqlite3OsAllocationSize
-#define sqlite3OsOpenReadWrite      sqlite3Os.xOpenReadWrite
-#define sqlite3OsOpenExclusive      sqlite3Os.xOpenExclusive
-#define sqlite3OsOpenReadOnly       sqlite3Os.xOpenReadOnly
-#define sqlite3OsDelete             sqlite3Os.xDelete
-#define sqlite3OsFileExists         sqlite3Os.xFileExists
-#define sqlite3OsFullPathname       sqlite3Os.xFullPathname
-#define sqlite3OsIsDirWritable      sqlite3Os.xIsDirWritable
-#define sqlite3OsSyncDirectory      sqlite3Os.xSyncDirectory
-#define sqlite3OsTempFileName       sqlite3Os.xTempFileName
-#define sqlite3OsRandomSeed         sqlite3Os.xRandomSeed
-#define sqlite3OsSleep              sqlite3Os.xSleep
-#define sqlite3OsCurrentTime        sqlite3Os.xCurrentTime
-#define sqlite3OsEnterMutex         sqlite3Os.xEnterMutex
-#define sqlite3OsLeaveMutex         sqlite3Os.xLeaveMutex
-#define sqlite3OsInMutex            sqlite3Os.xInMutex
-#define sqlite3OsThreadSpecificData sqlite3Os.xThreadSpecificData
-#define sqlite3OsMalloc             sqlite3Os.xMalloc
-#define sqlite3OsRealloc            sqlite3Os.xRealloc
-#define sqlite3OsFree               sqlite3Os.xFree
-#define sqlite3OsAllocationSize     sqlite3Os.xAllocationSize
-
-#endif /* SQLITE_ENABLE_REDEF_IO */
-
-#endif /* _SQLITE_OS_H_ */