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/*
* Copyright (c) 2009 Samit Basu
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "Array.hpp"
#include "Interpreter.hpp"
#include "PathSearch.hpp"
#include <QtCore>
static int ExistBuiltinFunction(QString fname, Interpreter* eval) {
bool isDefed;
FuncPtr d;
isDefed = eval->getContext()->lookupFunction(fname,d);
if (isDefed && ((d->type() == FM_BUILT_IN_FUNCTION) ||
(d->type() == FM_SPECIAL_FUNCTION)))
return 5;
else
return 0;
return 0;
}
static int ExistDirFunction(QString fname, Interpreter* eval) {
// Check for extra termination
int flen = fname.size();
if ((fname[flen-1] == '/') ||
(fname[flen-1] == '\\'))
fname[flen-1] = 0;
QFileInfo filestat(fname);
if (!filestat.exists()) return 0;
if (filestat.isDir()) return 7;
return 0;
}
static int ExistFileFunction(QString fname, Interpreter* eval) {
PathSearcher src(eval->getPath());
QString path = src.ResolvePath(fname);
if( !path.isNull() )
return 2;
bool isDefed;
FuncPtr d;
isDefed = eval->getContext()->lookupFunction(fname,d);
if (isDefed && (d->type() == FM_M_FUNCTION))
return 2;
return 0;
}
static int ExistVariableFunction(QString fname, Interpreter* eval) {
ParentScopeLocker lock(eval->getContext());
bool isDefed = (eval->getContext()->lookupVariable(fname).valid());
if (isDefed)
return 1;
else
return 0;
}
static int ExistAllFunction(QString fname, Interpreter* eval) {
int ret;
ret = ExistVariableFunction(fname,eval);
if (ret) return ret;
ret = ExistFileFunction(fname,eval);
if (ret) return ret;
ret = ExistDirFunction(fname,eval);
if (ret) return ret;
ret = ExistBuiltinFunction(fname,eval);
if (ret) return ret;
return 0;
}
//@@Signature
//sfunction exist ExistFunction
//inputs item kind
//outputs y
//DOCBLOCK inspection_exist
ArrayVector ExistFunction(int nargout, const ArrayVector& arg, Interpreter* eval) {
if (arg.size() < 1)
throw Exception("exist function takes at least one argument - the name of the object to check for");
QString fname = arg[0].asString();
QString stype;
if (arg.size() > 1) {
stype = arg[1].asString();
} else {
stype = "all";
}
int retval;
if (stype=="all")
retval = ExistAllFunction(fname,eval);
else if (stype=="builtin")
retval = ExistBuiltinFunction(fname,eval);
else if (stype=="dir")
retval = ExistDirFunction(fname,eval);
else if (stype=="file")
retval = ExistFileFunction(fname,eval);
else if (stype=="var")
retval = ExistVariableFunction(fname,eval);
else throw Exception("Unrecognized search type for function 'exist'");
return ArrayVector(Array(double(retval)));
}
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