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144 lines
4.5 KiB
C++
144 lines
4.5 KiB
C++
/**********************************************************************
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* $Id: cpl_getexecpath.cpp 27721 2014-09-22 12:42:28Z goatbar $
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*
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* Project: CPL - Common Portability Library
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* Purpose: Implement CPLGetExecPath().
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* Author: Frank Warmerdam, warmerdam@pobox.com
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*
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**********************************************************************
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* Copyright (c) 2005, Frank Warmerdam
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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****************************************************************************/
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#include "cpl_conv.h"
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#include "cpl_string.h"
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CPL_CVSID("$Id: cpl_getexecpath.cpp 27721 2014-09-22 12:42:28Z goatbar $");
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#if defined(WIN32) || defined(WIN32CE)
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#define HAVE_IMPLEMENTATION 1
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#if defined(WIN32CE)
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# include "cpl_win32ce_api.h"
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#else
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# include <windows.h>
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#endif
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/************************************************************************/
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/* CPLGetExecPath() */
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/************************************************************************/
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int CPLGetExecPath( char *pszPathBuf, int nMaxLength )
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{
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#ifndef WIN32CE
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if( CSLTestBoolean(
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CPLGetConfigOption( "GDAL_FILENAME_IS_UTF8", "YES" ) ) )
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{
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wchar_t *pwszPathBuf = (wchar_t*)
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CPLCalloc(nMaxLength+1,sizeof(wchar_t));
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if( GetModuleFileNameW( NULL, pwszPathBuf, nMaxLength ) == 0 )
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{
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CPLFree( pwszPathBuf );
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return FALSE;
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}
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else
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{
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char *pszDecoded =
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CPLRecodeFromWChar(pwszPathBuf,CPL_ENC_UCS2,CPL_ENC_UTF8);
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strncpy( pszPathBuf, pszDecoded, nMaxLength );
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CPLFree( pszDecoded );
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CPLFree( pwszPathBuf );
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return TRUE;
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}
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}
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else
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{
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if( GetModuleFileName( NULL, pszPathBuf, nMaxLength ) == 0 )
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return FALSE;
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else
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return TRUE;
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}
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#else
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if( CE_GetModuleFileNameA( NULL, pszPathBuf, nMaxLength ) == 0 )
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return FALSE;
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else
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return TRUE;
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#endif
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}
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#endif
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/************************************************************************/
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/* CPLGetExecPath() */
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/************************************************************************/
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#if !defined(HAVE_IMPLEMENTATION) && defined(__linux)
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#include "cpl_multiproc.h"
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#define HAVE_IMPLEMENTATION 1
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int CPLGetExecPath( char *pszPathBuf, int nMaxLength )
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{
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long nPID = getpid();
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CPLString osExeLink;
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ssize_t nResultLen;
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osExeLink.Printf( "/proc/%ld/exe", nPID );
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nResultLen = readlink( osExeLink, pszPathBuf, nMaxLength );
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if( nResultLen >= 0 )
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pszPathBuf[nResultLen] = '\0';
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else
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pszPathBuf[0] = '\0';
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return nResultLen > 0;
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}
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#endif
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/************************************************************************/
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/* CPLGetExecPath() */
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/************************************************************************/
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/**
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* Fetch path of executable.
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*
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* The path to the executable currently running is returned. This path
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* includes the name of the executable. Currently this only works on
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* win32 and linux platforms. The returned path is UTF-8 encoded.
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*
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* @param pszPathBuf the buffer into which the path is placed.
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* @param nMaxLength the buffer size, MAX_PATH+1 is suggested.
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*
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* @return FALSE on failure or TRUE on success.
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*/
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#ifndef HAVE_IMPLEMENTATION
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int CPLGetExecPath( CPL_UNUSED char *pszPathBuf, CPL_UNUSED int nMaxLength )
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{
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return FALSE;
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}
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#endif
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