sqlite移植for symbian

直接去sqlite网站上档一个源码，然后把文件读写的接口改成symbian的。就可以用了。。
 
 
 
但是需要注意的是，别做成dll,只能做成static lib. dll里面不支持static，如果你非要做成dll,那需要把所有的static放到tls里面。我尝试过，逻辑比较多。而且改动较大。所以static lib就可以了。。
 
 
============================================================================
 
Name : sqlite_symbian.cpp
 
Author :
 
Version : 1.0
 
Copyright : Arthur Hu
 
Description : sqlite_symbian declaration
 
============================================================================
 
*/
 
 
 
#include "sqlite3.h"
 
#include "sqliteInt.h"
 
#include "os_common.h"
 
 
 
#include <f32file.h>
 
#include <stdio.h>
 
#include <string.h>
 
#include <bautils.h>
 
 
 
#include <utf.h>
 
 
 
void Utf8ToUnicode(const char* src, TDes& aDes)
 
{
 
const TUint8* ptr = (const TUint8*) src;
 
TPtrC8 srcPtr(ptr, User::StringLength(ptr));
 
CnvUtfConverter::ConvertToUnicodeFromUtf8(aDes, srcPtr);
 
}
 
 
 
typedef struct SymbianFile SymbianFile;
 
struct SymbianFile
 
{
 
const sqlite3_io_methods *pMethod; /*** Must be first ***/
 
sqlite3_vfs *pVfs; /* The VFS used to open this file */
 
 
 
RFs iFs;
 
RFile iFile;
 
 
 
unsigned char locktype; /* Type of lock currently held on this file */
 
short sharedLockByte; /* Randomly chosen byte used as a shared lock */
 
char zPath[255]; /* Full pathname of this file */
 
};
 
 
 
int FileClose(sqlite3_file* f)
 
{
 
SymbianFile* file = (SymbianFile*) f;
 
file->iFile.Close();
 
file->iFs.Close();
 
return SQLITE_OK;
 
}
 
int FileRead(sqlite3_file* f, void* data, int len, sqlite3_int64 offset)
 
{
 
SymbianFile* file = (SymbianFile*) f;
 
TInt off = offset;
 
TInt err = file->iFile.Seek(ESeekStart, off);
 
 
 
if (err != KErrNone)
 
{
 
return SQLITE_IOERR_READ;
 
}
 
 
 
TPtr8 ptr((TUint8*) data, len);
 
err = file->iFile.Read(ptr);
 
if (err != KErrNone)
 
{
 
return SQLITE_IOERR_READ;
 
}
 
 
 
if (ptr.Length() < len)
 
{
 
return SQLITE_IOERR_SHORT_READ;
 
}
 
 
 
return SQLITE_OK;
 
}
 
 
 
int FileWrite(sqlite3_file* f, const void* data, int len, sqlite3_int64 offset)
 
{
 
SymbianFile* file = (SymbianFile*) f;
 
TInt off = offset;
 
TInt err = file->iFile.Seek(ESeekStart, off);
 
 
 
if (err != KErrNone)
 
{
 
return SQLITE_IOERR_WRITE;
 
}
 
 
 
TPtrC8 ptr((const TUint8*) data, len);
 
err = file->iFile.Write(ptr);
 
if (err != KErrNone)