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/*
CVSNT Generic API
Copyright (C) 2004-5 Tony Hoyle and March-Hare Software Ltd
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License version 2.1 as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Unix specific */
#include <config.h>
#include <stdio.h>
#include <ctype.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <ltdl.h>
#include <glob.h>
#include <config.h>
#include "../lib/api_system.h"
#include "../cvs_string.h"
#include "../FileAccess.h"
#include "../ServerIO.h"
#include "../LibraryAccess.h"
namespace
{
static unsigned initcount;
static int dlref()
{
if(!initcount++)
lt_dlinit();
}
static int dlunref()
{
if(!--initcount)
lt_dlexit();
}
};
CLibraryAccess::CLibraryAccess(const void *lib /*= NULL*/)
{
m_lib = (void*)lib;
}
CLibraryAccess::~CLibraryAccess()
{
Unload();
}
bool CLibraryAccess::Load(const char *name, const char *directory)
{
if(m_lib)
Unload();
cvs::filename fn;
if(directory && *directory)
cvs::sprintf(fn,256,"%s/%s",directory,name);
else
fn = name;
dlref();
m_lib = (void*)lt_dlopenext(fn.c_str());
if(!m_lib)
{
CServerIo::trace(3,"LibraryAccess::Load failed for '%s', error = %s",fn.c_str(),strerror(errno));
dlunref();
return false;
}
return true;
}
bool CLibraryAccess::Unload()
{
if(!m_lib)
return true;
lt_dlclose((lt_dlhandle)m_lib);
dlunref();
m_lib = NULL;
return true;
}
void *CLibraryAccess::GetProc(const char *name)
{
if(!m_lib)
return NULL;
return lt_dlsym((lt_dlhandle)m_lib,name);
}
void *CLibraryAccess::Detach()
{
void *lib = m_lib;
m_lib = NULL;
return lib;
}
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