CString openTemporaryFile(const char* prefix, PlatformFileHandle& handle)
{
// BREW does not have a system-wide temporary directory,
// use "fs:/~/tmp" as our temporary directory.
String tempPath("fs:/~/tmp");
PlatformRefPtr<IFileMgr> fileMgr = createRefPtrInstance<IFileMgr>(AEECLSID_FILEMGR);
// Create the temporary directory if it does not exist.
IFILEMGR_MkDir(fileMgr.get(), tempPath.utf8().data());
// Loop until we find a temporary filename that does not exist.
int number = static_cast<int>(randomNumber() * 10000);
CString filename;
do {
StringBuilder builder;
builder.append(tempPath);
builder.append('/');
builder.append(prefix);
builder.append(String::number(number));
filename = builder.toString().utf8();
number++;
} while (IFILEMGR_Test(fileMgr.get(), filename.data()) == SUCCESS);
IFile* tempFile = IFILEMGR_OpenFile(fileMgr.get(), filename.data(), _OFM_CREATE);
if (tempFile) {
handle = tempFile;
return filename;
}
return CString();
}
/**
* 打开文件
* @param file 打开文件名
* @param flag 打开方式
* @return 0:成功 -1:失败
enum {
_OFM_READ = 0x0001,
_OFM_READWRITE = 0x0002,
_OFM_CREATE = 0x0004,
_OFM_APPEND = 0x0008
};
*/
int File::open(const char* file,
int flag)
{
if (_FileMgr == 0)
return -1;
_flag = flag;
if (SUCCESS != IFILEMGR_Test(_FileMgr, file))
{
_flag |= _OFM_CREATE;
}
else
{
_flag |= _OFM_APPEND;
}
_File = IFILEMGR_OpenFile(_FileMgr, file, _flag);
if (!_File)
{
_FileMgr = 0;
return -1;
}
if (_flag|_OFM_APPEND)
{
IFILE_Seek(_File,_SEEK_END,0);
}
return 0;
}
/*=======================================================================
Function: Loc_InitGPSSettings()
Description:
Initializes the GPS configuration to the default values.
=======================================================================*/
uint32 Loc_InitGPSSettings(IShell *pIShell, AEEGPSConfig *gpsConfig)
{
IFileMgr *pIFileMgr = NULL;
IFile *pIConfigFile = NULL;
uint32 nResult = 0;
if (pIShell == NULL || gpsConfig == NULL)
return EFAILED;
// Create the instance of IFileMgr
nResult = ISHELL_CreateInstance( pIShell, AEECLSID_FILEMGR, (void**)&pIFileMgr );
if ( SUCCESS != nResult ) {
return nResult;
}
// If the config file exists, open it and read the settings. Otherwise, we need to
// create a new config file.
nResult = IFILEMGR_Test( pIFileMgr, LOC_CONFIG_FILE );
if ( SUCCESS == nResult ) {
pIConfigFile = IFILEMGR_OpenFile( pIFileMgr, LOC_CONFIG_FILE, _OFM_READ );
if ( !pIConfigFile ) {
nResult = EFAILED;
}
else {
nResult = Loc_ReadGPSSettings( pIConfigFile, gpsConfig );
}
}
else {
pIConfigFile = IFILEMGR_OpenFile( pIFileMgr, LOC_CONFIG_FILE, _OFM_CREATE );
if ( !pIConfigFile ) {
nResult = EFAILED;
}
else {
// Setup the default GPS settings
gpsConfig->optim = AEEGPS_OPT_DEFAULT;
gpsConfig->qos = LOC_QOS_DEFAULT;
gpsConfig->server.svrType = AEEGPS_SERVER_DEFAULT;
nResult = Loc_WriteGPSSettings( pIConfigFile , gpsConfig);
}
}
// Free the IFileMgr and IFile instances
IFILE_Release( pIConfigFile );
IFILEMGR_Release( pIFileMgr );
return nResult;
}
/*=======================================================================
Function: SamplePosDet_InitGPSSettings()
Description:
Initializes the GPS configuration to the default values.
Prototype:
uint32 SamplePosDet_InitGPSSettings( CSamplePosDet *pMe );
Parameters:
pMe: [in]. CSamplePosDet instance.
Return Value:
SUCCESS - If the settings were initialized successfully.
Returns error code otherwise.
Comments:
None
Side Effects:
None
See Also:
None
=======================================================================*/
uint32 SamplePosDet_InitGPSSettings(CSamplePosDet *pMe)
{
IFileMgr *pIFileMgr = NULL;
IFile *pIConfigFile = NULL;
uint32 nResult = 0;
// Create the instance of IFileMgr
nResult = ISHELL_CreateInstance( pMe->theApp.m_pIShell, AEECLSID_FILEMGR, (void**)&pIFileMgr );
if ( SUCCESS != nResult ) {
return nResult;
}
// If the config file exists, open it and read the settings. Otherwise, we need to
// create a new config file.
nResult = IFILEMGR_Test( pIFileMgr, SPD_CONFIG_FILE );
if ( SUCCESS == nResult ) {
pIConfigFile = IFILEMGR_OpenFile( pIFileMgr, SPD_CONFIG_FILE, _OFM_READ );
if ( !pIConfigFile ) {
nResult = EFAILED;
}
else {
nResult = SamplePosDet_ReadGPSSettings( pMe, pIConfigFile );
}
}
else {
pIConfigFile = IFILEMGR_OpenFile( pIFileMgr, SPD_CONFIG_FILE, _OFM_CREATE );
if ( !pIConfigFile ) {
nResult = EFAILED;
}
else {
// Setup the default GPS settings
pMe->gpsSettings.optim = AEEGPS_OPT_DEFAULT;
pMe->gpsSettings.qos = SPD_QOS_DEFAULT;
pMe->gpsSettings.server.svrType = AEEGPS_SERVER_DEFAULT;
nResult = SamplePosDet_WriteGPSSettings( pMe, pIConfigFile );
}
}
// Free the IFileMgr and IFile instances
IFILE_Release( pIConfigFile );
IFILEMGR_Release( pIFileMgr );
return nResult;
}
/*=======================================================================
Function: SamplePosDet_SaveGPSSettings()
Description:
Opens the configuration file and saves the settings.
Prototype:
uint32 SamplePosDet_SaveGPSSettings(CSamplePosDet *pMe);
Parameters:
pMe: [in]. CSamplePosDet instance.
Return Value:
SUCCESS - If the settings were written successfully.
Error code otherwise.
Comments:
None
Side Effects:
None
See Also:
None
=======================================================================*/
uint32 SamplePosDet_SaveGPSSettings( CSamplePosDet *pMe )
{
IFileMgr *pIFileMgr = NULL;
IFile *pIConfigFile = NULL;
uint32 nResult = 0;
// Create the instance of IFileMgr
nResult = ISHELL_CreateInstance( pMe->theApp.m_pIShell, AEECLSID_FILEMGR, (void**)&pIFileMgr );
if ( SUCCESS != nResult ) {
return nResult;
}
// If the config file exists, open it and read the settings. Otherwise, we need to
// create a new config file.
nResult = IFILEMGR_Test( pIFileMgr, SPD_CONFIG_FILE );
if ( SUCCESS == nResult ) {
pIConfigFile = IFILEMGR_OpenFile( pIFileMgr, SPD_CONFIG_FILE, _OFM_READWRITE );
if ( !pIConfigFile ) {
nResult = EFAILED;
}
else {
nResult = SamplePosDet_WriteGPSSettings( pMe, pIConfigFile );
}
}
else {
pIConfigFile = IFILEMGR_OpenFile( pIFileMgr, SPD_CONFIG_FILE, _OFM_CREATE );
if ( !pIConfigFile ) {
nResult = EFAILED;
}
else {
nResult = SamplePosDet_WriteGPSSettings( pMe, pIConfigFile );
}
}
// Free the IFileMgr and IFile instances
IFILE_Release( pIConfigFile );
IFILEMGR_Release( pIFileMgr );
return nResult;
}
bool fileExists(const String& path)
{
PlatformRefPtr<IFileMgr> fileMgr = createRefPtrInstance<IFileMgr>(AEECLSID_FILEMGR);
return (IFILEMGR_Test(fileMgr.get(), path.utf8().data()) == SUCCESS);
}
