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Changes to support linking without a parser and without a disk I/O interface. (CVS 2504)

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FossilOrigin-Name: 62a7353d4af4886b1561832e8b36e8e788b38834
This commit is contained in:
drh
2005-06-07 22:22:50 +00:00
parent 80f93bf41f
commit 0ccebe7e2d
6 changed files with 108 additions and 112 deletions
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84
src/os_win.c
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@@ -34,6 +34,13 @@
*/
#include "os_common.h"
/*
** Do not include any of the File I/O interface procedures if the
** SQLITE_OMIT_DISKIO macro is defined (indicating that there database
** will be in-memory only)
*/
#ifndef SQLITE_OMIT_DISKIO
/*
** Delete the named file
*/
@@ -625,6 +632,36 @@ int sqlite3OsUnlock(OsFile *id, int locktype){
return rc;
}
/*
** Turn a relative pathname into a full pathname. Return a pointer
** to the full pathname stored in space obtained from sqliteMalloc().
** The calling function is responsible for freeing this space once it
** is no longer needed.
*/
char *sqlite3OsFullPathname(const char *zRelative){
char *zNotUsed;
char *zFull;
int nByte;
#ifdef __CYGWIN__
nByte = strlen(zRelative) + MAX_PATH + 1001;
zFull = sqliteMalloc( nByte );
if( zFull==0 ) return 0;
if( cygwin_conv_to_full_win32_path(zRelative, zFull) ) return 0;
#else
nByte = GetFullPathNameA(zRelative, 0, 0, &zNotUsed) + 1;
zFull = sqliteMalloc( nByte );
if( zFull==0 ) return 0;
GetFullPathNameA(zRelative, nByte, zFull, &zNotUsed);
#endif
return zFull;
}
#endif /* SQLITE_OMIT_DISKIO */
/***************************************************************************
** Everything above deals with file I/O. Everything that follows deals
** with other miscellanous aspects of the operating system interface
****************************************************************************/
/*
** Get information to seed the random number generator. The seed
** is written into the buffer zBuf[256]. The calling function must
@@ -697,30 +734,6 @@ void sqlite3OsLeaveMutex(){
#endif
}
/*
** Turn a relative pathname into a full pathname. Return a pointer
** to the full pathname stored in space obtained from sqliteMalloc().
** The calling function is responsible for freeing this space once it
** is no longer needed.
*/
char *sqlite3OsFullPathname(const char *zRelative){
char *zNotUsed;
char *zFull;
int nByte;
#ifdef __CYGWIN__
nByte = strlen(zRelative) + MAX_PATH + 1001;
zFull = sqliteMalloc( nByte );
if( zFull==0 ) return 0;
if( cygwin_conv_to_full_win32_path(zRelative, zFull) ) return 0;
#else
nByte = GetFullPathNameA(zRelative, 0, 0, &zNotUsed) + 1;
zFull = sqliteMalloc( nByte );
if( zFull==0 ) return 0;
GetFullPathNameA(zRelative, nByte, zFull, &zNotUsed);
#endif
return zFull;
}
/*
** The following variable, if set to a non-zero value, becomes the result
** returned from sqlite3OsCurrentTime(). This is used for testing.
@@ -751,27 +764,4 @@ int sqlite3OsCurrentTime(double *prNow){
return 0;
}
/*
** Find the time that the file was last modified. Write the
** modification time and date as a Julian Day number into *prNow and
** return SQLITE_OK. Return SQLITE_ERROR if the modification
** time cannot be found.
*/
int sqlite3OsFileModTime(OsFile *id, double *prMTime){
int rc;
FILETIME ft;
/* FILETIME structure is a 64-bit value representing the number of
** 100-nanosecond intervals since January 1, 1601 (= JD 2305813.5).
*/
if( GetFileTime(id->h, 0, 0, &ft) ){
double t;
t = ((double)ft.dwHighDateTime) * 4294967296.0;
*prMTime = (t + ft.dwLowDateTime)/864000000000.0 + 2305813.5;
rc = SQLITE_OK;
}else{
rc = SQLITE_ERROR;
}
return rc;
}
#endif /* OS_WIN */