Bundle relevant parts of sqlite 2.8.0.

# sqlite has a completely non-restrictive license
2025-08-20 01:14:28 +02:00 · 2003-04-17 11:27:30 +00:00 · 2003-04-17 11:27:30 +00:00 · 05d5a35c9b
commit 05d5a35c9b
parent 826583dc91
36 changed files with 38179 additions and 0 deletions
--- a/ext/sqlite/libsqlite/src/os.h
+++ b/ext/sqlite/libsqlite/src/os.h
@ -0,0 +1,172 @@
+/*
+** 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_
+
+/*
+** These #defines should enable >2GB file support on Posix if the
+** underlying operating system supports it.  If the OS lacks
+** large file support, or if the OS is windows, these should be no-ops.
+**
+** Large file support can be disabled using the -DSQLITE_DISABLE_LFS switch
+** on the compiler command line.  This is necessary if you are compiling
+** on a recent machine (ex: RedHat 7.2) but you want your code to work
+** on an older machine (ex: RedHat 6.0).  If you compile on RedHat 7.2
+** without this option, LFS is enable.  But LFS does not exist in the kernel
+** in RedHat 6.0, so the code won't work.  Hence, for maximum binary
+** portability you should omit LFS.
+**
+** Similar is true for MacOS.  LFS is only supported on MacOS 9 and later.
+*/
+#ifndef SQLITE_DISABLE_LFS
+# define _LARGE_FILE       1
+# define _FILE_OFFSET_BITS 64
+# define _LARGEFILE_SOURCE 1
+#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
+
+/*
+** Figure out if we are dealing with Unix, Windows or MacOS.
+**
+** N.B. MacOS means Mac Classic (or Carbon). Treat Darwin (OS X) as Unix.
+**      The MacOS build is designed to use CodeWarrior (tested with v8)
+*/
+#ifndef OS_UNIX
+# ifndef OS_WIN
+#  ifndef OS_MAC
+#    if defined(__MACOS__)
+#      define OS_MAC 1
+#      define OS_WIN 0
+#      define OS_UNIX 0
+#    elif defined(_WIN32) || defined(WIN32) || defined(__CYGWIN__) || defined(__MINGW32__) || defined(__BORLANDC__)
+#      define OS_MAC 0
+#      define OS_WIN 1
+#      define OS_UNIX 0
+#    else
+#      define OS_MAC 0
+#      define OS_WIN 0
+#      define OS_UNIX 1
+#    endif
+#  else
+#    define OS_WIN 0
+#    define OS_UNIX 0
+#  endif
+# else
+#  define OS_MAC 0
+#  define OS_UNIX 0
+# endif
+#else
+# define OS_MAC 0
+# define OS_WIN 0
+#endif
+
+/*
+** A handle for an open file is stored in an OsFile object.
+*/
+#if OS_UNIX
+# include <sys/types.h>
+# include <sys/stat.h>
+# include <fcntl.h>
+# include <unistd.h>
+  typedef struct OsFile OsFile;
+  struct OsFile {
+    struct lockInfo *pLock;  /* Information about locks on this inode */
+    int fd;                  /* The file descriptor */
+    int locked;              /* True if this user holds the lock */
+  };
+# define SQLITE_TEMPNAME_SIZE 200
+# if defined(HAVE_USLEEP) && HAVE_USLEEP
+#  define SQLITE_MIN_SLEEP_MS 1
+# else
+#  define SQLITE_MIN_SLEEP_MS 1000
+# endif
+#endif
+
+#if OS_WIN
+#include <windows.h>
+#include <winbase.h>
+  typedef struct OsFile OsFile;
+  struct OsFile {
+    HANDLE h;               /* Handle for accessing the file */
+    int locked;             /* 0: unlocked, <0: write lock, >0: read lock */
+  };
+# if defined(_MSC_VER) || defined(__BORLANDC__)
+    typedef __int64 off_t;
+# else
+    typedef long long off_t;
+# endif
+# define SQLITE_TEMPNAME_SIZE (MAX_PATH+50)
+# define SQLITE_MIN_SLEEP_MS 1
+#endif
+
+#if OS_MAC
+# include <unistd.h>
+# include <Files.h>
+  typedef struct OsFile OsFile;
+  struct OsFile {
+    SInt16 refNum;           /* Data fork/file reference number */
+    SInt16 refNumRF;         /* Resource fork reference number (for locking) */
+    int locked;              /* 0: unlocked, <0: write lock, >0: read lock */
+    int delOnClose;          /* True if file is to be deleted on close */
+    char *pathToDel;         /* Name of file to delete on close */
+  };
+# ifdef _LARGE_FILE
+    typedef SInt64 off_t;
+# else
+    typedef SInt32 off_t;
+# endif
+# define SQLITE_TEMPNAME_SIZE _MAX_PATH
+# define SQLITE_MIN_SLEEP_MS 17
+#endif
+
+int sqliteOsDelete(const char*);
+int sqliteOsFileExists(const char*);
+int sqliteOsOpenReadWrite(const char*, OsFile*, int*);
+int sqliteOsOpenExclusive(const char*, OsFile*, int);
+int sqliteOsOpenReadOnly(const char*, OsFile*);
+int sqliteOsTempFileName(char*);
+int sqliteOsClose(OsFile*);
+int sqliteOsRead(OsFile*, void*, int amt);
+int sqliteOsWrite(OsFile*, const void*, int amt);
+int sqliteOsSeek(OsFile*, off_t offset);
+int sqliteOsSync(OsFile*);
+int sqliteOsTruncate(OsFile*, off_t size);
+int sqliteOsFileSize(OsFile*, off_t *pSize);
+int sqliteOsReadLock(OsFile*);
+int sqliteOsWriteLock(OsFile*);
+int sqliteOsUnlock(OsFile*);
+int sqliteOsRandomSeed(char*);
+int sqliteOsSleep(int ms);
+void sqliteOsEnterMutex(void);
+void sqliteOsLeaveMutex(void);
+char *sqliteOsFullPathname(const char*);
+
+
+
+#endif /* _SQLITE_OS_H_ */