kicad/common/prependpath.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2014 CERN
* Copyright (C) 2014 KiCad Developers, see CHANGELOG.TXT for contributors.
* @author Maciej Suminski <maciej.suminski@cern.ch>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <macros.h>
#include <fctsys.h>
#include <wx/filename.h>
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#if !wxCHECK_VERSION( 2, 9, 0 )
// implement missing wx2.8 function until >= wx3.0 pervades.
static wxString wxJoin(const wxArrayString& arr, const wxChar sep,
const wxChar escape = '\\')
{
size_t count = arr.size();
if ( count == 0 )
return wxEmptyString;
wxString str;
// pre-allocate memory using the estimation of the average length of the
// strings in the given array: this is very imprecise, of course, but
// better than nothing
str.reserve(count*(arr[0].length() + arr[count-1].length()) / 2);
if ( escape == wxT('\0') )
{
// escaping is disabled:
for ( size_t i = 0; i < count; i++ )
{
if ( i )
str += sep;
str += arr[i];
}
}
else // use escape character
{
for ( size_t n = 0; n < count; n++ )
{
if ( n )
str += sep;
for ( wxString::const_iterator i = arr[n].begin(),
end = arr[n].end();
i != end;
++i )
{
const wxChar ch = *i;
if ( ch == sep )
str += escape; // escape this separator
str += ch;
}
}
}
str.Shrink(); // release extra memory if we allocated too much
return str;
}
#endif
/// Put aPriorityPath in front of all paths in the value of aEnvVar.
const wxString PrePendPath( const wxString& aEnvVar, const wxString& aPriorityPath )
{
wxPathList paths;
paths.AddEnvList( aEnvVar );
paths.Insert( aPriorityPath, 0 );
return wxJoin( paths, wxPATH_SEP[0] );
}