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// $Id$
//-----------------------------------------------------------------------------
// Flat File class implementations
//-----------------------------------------------------------------------------
#include "Flat_File_Persistence.h"
#include "ace/Log_Msg.h"
#include "ace/OS_NS_sys_stat.h"
#include "ace/OS_NS_unistd.h"
#include "ace/OS_NS_fcntl.h"
TAO_NS_FlatFileStream::TAO_NS_FlatFileStream (const ACE_CString & file,
const char * mode)
: fl_ (0)
{
ACE_TRACE("TAO_NS_FlatFileStream");
file_ = file;
mode_ = mode;
}
TAO_NS_FlatFileStream::~TAO_NS_FlatFileStream ()
{
ACE_TRACE("~TAO_NS_FlatFileStream");
if ( fl_ != 0 )
this->close();
}
void
TAO_NS_FlatFileStream::remove ()
{
ACE_TRACE("remove");
ACE_OS::unlink(file_.c_str());
}
int
TAO_NS_FlatFileStream::exists ()
{
ACE_TRACE("exists");
// We could check the mode for this file, but for now just check exists
return ! ACE_OS::access(file_.c_str(), F_OK);
}
int
TAO_NS_FlatFileStream::open()
{
ACE_TRACE("open");
// For now, three flags exist "r", "w", and "c"
int flags = 0;
const char *fdmode = 0;
if( strchr(mode_.c_str(), 'r') )
if( strchr(mode_.c_str(), 'w') )
flags = O_RDWR, fdmode = "r+";
else
flags = O_RDONLY, fdmode = "r";
else
flags = O_WRONLY, fdmode = "w";
if( strchr(mode_.c_str(), 'c') )
flags |= O_CREAT;
#ifndef ACE_WIN32
if( ACE_OS::flock_init (&filelock_, flags, file_.c_str(), 0666) != 0 )
ACE_ERROR_RETURN ((LM_ERROR,
"Cannot open file %s for mode %s: (%d) %s\n",
file_.c_str(), mode_.c_str(),
errno, ACE_OS::strerror(errno)),
-1);
#else
if( (filelock_.handle_= ACE_OS::open (file_.c_str(), flags, 0)) == ACE_INVALID_HANDLE )
ACE_ERROR_RETURN ((LM_ERROR,
"Cannot open file %s for mode %s: (%d) %s\n",
file_.c_str(), mode_.c_str(),
errno, ACE_OS::strerror(errno)),
-1);
#endif
this->fl_ = ACE_OS::fdopen(filelock_.handle_, fdmode);
if (this->fl_ == 0)
ACE_ERROR_RETURN ((LM_ERROR,
"Cannot fdopen file %s for mode %s: (%d) %s\n",
file_.c_str(), mode_.c_str(),
errno, ACE_OS::strerror(errno)),
-1);
return 0;
}
int
TAO_NS_FlatFileStream::close()
{
ACE_TRACE("close");
ACE_OS::fflush(fl_);
#ifndef ACE_WIN32
ACE_OS::flock_destroy (&filelock_, 0);
#else
ACE_OS::fclose (fl_);
#endif
fl_ = 0;
return 0;
}
int
TAO_NS_FlatFileStream::flock (int whence, int start, int len)
{
ACE_TRACE("flock");
#if defined (ACE_WIN32)
ACE_UNUSED_ARG (whence);
ACE_UNUSED_ARG (start);
ACE_UNUSED_ARG (len);
#else
if( ACE_OS::strcmp(mode_.c_str(), "r") == 0 )
ACE_OS::flock_rdlock(&filelock_, whence, start, len);
else
ACE_OS::flock_wrlock(&filelock_, whence, start, len);
#endif
return 0;
}
int
TAO_NS_FlatFileStream::funlock (int whence, int start, int len)
{
ACE_TRACE("funlock");
#if defined (ACE_WIN32)
ACE_UNUSED_ARG (whence);
ACE_UNUSED_ARG (start);
ACE_UNUSED_ARG (len);
#else
ACE_OS::flock_unlock(&filelock_, whence, start, len);
#endif
return 0;
}
time_t
TAO_NS_FlatFileStream::last_changed(void)
{
ACE_TRACE("TAO_NS_FlatFileStream::last_changed");
ACE_stat st;
ACE_OS::fstat(filelock_.handle_, &st);
return st.st_mtime;
}
TAO_Storable_Base &
TAO_NS_FlatFileStream::operator <<(
const TAO_NS_Persistence_Header &header)
{
ACE_TRACE("TAO_NS_FlatFileStream::operator <<");
ACE_OS::rewind(this->fl_);
ACE_OS::fprintf(this->fl_, "%d\n%d\n", header.size(), header.destroyed());
ACE_OS::fflush(this->fl_);
return *this;
}
TAO_Storable_Base &
TAO_NS_FlatFileStream::operator >>(
TAO_NS_Persistence_Header &header)
{
ACE_TRACE("TAO_NS_FlatFileStream::operator >>");
unsigned int size;
int destroyed;
ACE_OS::rewind(this->fl_);
fscanf(fl_, "%u\n", &size);
header.size(size);
fscanf(fl_, "%d\n", &destroyed);
header.destroyed(destroyed);
return *this;
}
TAO_Storable_Base &
TAO_NS_FlatFileStream::operator <<(
const TAO_NS_Persistence_Record &record)
{
ACE_TRACE("TAO_NS_FlatFileStream::operator <<");
TAO_NS_Persistence_Record::Record_Type type = record.type();
ACE_OS::fprintf(this->fl_, "%d\n", type);
ACE_CString id = record.id();
ACE_OS::fprintf(this->fl_, ACE_SIZE_T_FORMAT_SPECIFIER "\n%s\n",
id.length(), id.c_str());
ACE_CString kind = record.kind();
ACE_OS::fprintf(this->fl_, ACE_SIZE_T_FORMAT_SPECIFIER "\n%s\n",
kind.length(), kind.c_str());
ACE_CString ref = record.ref();
ACE_OS::fprintf(this->fl_, ACE_SIZE_T_FORMAT_SPECIFIER "\n%s\n",
ref.length(), ref.c_str());
ACE_OS::fflush(this->fl_);
return *this;
}
TAO_Storable_Base &
TAO_NS_FlatFileStream::operator >>(
TAO_NS_Persistence_Record &record)
{
ACE_TRACE("TAO_NS_FlatFileStream::operator >>");
TAO_NS_Persistence_Record::Record_Type type;
int temp_type_in;
fscanf(fl_, "%d\n", &temp_type_in);
type = (TAO_NS_Persistence_Record::Record_Type) temp_type_in;
record.type(type);
size_t bufSize = 0;
//id
fscanf(fl_, ACE_SIZE_T_FORMAT_SPECIFIER "\n", &bufSize);
char *id = new char[bufSize+1];
//char *id;
//ACE_NEW_RETURN (id, char[bufSize+1], 1);
ACE_OS::fgets(id, bufSize+1, fl_);
ACE_CString newId(id);
record.id(newId);
delete [] id;
//kind
fscanf(fl_, ACE_SIZE_T_FORMAT_SPECIFIER "\n", &bufSize);
char *kind = new char[bufSize+1];
//char *kind;
//ACE_NEW (kind, char[bufSize+1]);
ACE_OS::fgets(kind, bufSize+1, fl_);
kind[bufSize] = '\0';
ACE_CString newKind(kind);
record.kind(newKind);
delete [] kind;
//ref
fscanf(fl_, ACE_SIZE_T_FORMAT_SPECIFIER "\n", &bufSize);
char *ref = new char[bufSize+1];
//char *ref;
//ACE_NEW(ref, char[bufSize+1]);
ACE_OS::fgets(ref, bufSize+1, fl_);
ACE_CString newRef(ref);
record.ref(newRef);
delete [] ref;
return *this;
}
TAO_Storable_Base &
TAO_NS_FlatFileStream::operator <<(
const TAO_NS_Persistence_Global &global)
{
ACE_TRACE("TAO_NS_FlatFileStream::operator <<");
ACE_OS::rewind(this->fl_);
ACE_OS::fprintf(this->fl_, "%d\n", global.counter());
ACE_OS::fflush(this->fl_);
return *this;
}
TAO_Storable_Base &
TAO_NS_FlatFileStream::operator >>(
TAO_NS_Persistence_Global &global)
{
ACE_TRACE("TAO_NS_FlatFileStream::operator >>");
unsigned int counter = 0;
ACE_OS::rewind(this->fl_);
fscanf(fl_, "%u\n", &counter);
global.counter(counter);
return *this;
}
TAO_Storable_Base *TAO_NS_FlatFileFactory::create_stream(
const ACE_CString & file,
const char * mode)
{
ACE_TRACE("TAO_NS_FlatFileFactory::create_stream");
TAO_Storable_Base *stream = 0;
ACE_NEW_RETURN (stream,
TAO_NS_FlatFileStream(file, mode),
0);
return stream;
}
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