openfoam/applications/test/ITstream/Test-ITstream.C

/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2017-2021 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

    OpenFOAM 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 3 of the License, or
    (at your option) any later version.

    OpenFOAM 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 OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.

Description

\*---------------------------------------------------------------------------*/

#include "ListStream.H"
#include "UListStream.H"
#include "wordList.H"
#include "IOstreams.H"
#include "argList.H"
#include "ITstream.H"
#include "ListOps.H"
#include "stringListOps.H"

using namespace Foam;

template<class T>
Ostream& toString(Ostream& os, const T& str)
{
    os << str;
    return os;
}


template<>
Ostream& toString(Ostream& os, const UList<char>& list)
{
    for (const char c : list)
    {
        os << c;
    }

    return os;
}


template<>
Ostream& toString(Ostream& os, const List<char>& list)
{
    for (const char c : list)
    {
        os << c;
    }

    return os;
}


void printTokens(Istream& is)
{
    label count = 0;
    token t;
    while (is.good())
    {
        is >> t;
        if (t.good())
        {
            ++count;
            Info<< "token: " << t << endl;
        }
    }

    Info<< count << " tokens" << endl;
}


Ostream& reportPeek(const ITstream& is)
{
    Info<< "  index : " << is.tokenIndex() << nl
        << "  peek  : " << is.peek().info() << nl;
    return Info;
}


template<class BUF>
void doTest
(
    const string& name,
    const BUF& input,
    bool verbose = false,
    bool testskip = false
)
{
    Info<< "test " << name.c_str() << ":" << nl
        << "====" << nl;
    toString(Info, input)
        << nl
        << "====" << nl << endl;

    ITstream its(input);
    Info<< "got " << its.size() << " tokens - index at "
        << its.tokenIndex() << endl;

    if (verbose)
    {
        for (const token& tok : its)
        {
            Info<< "    " << tok.info() << nl;
        }
        Info<< nl;
    }

    if (testskip)
    {
        Info<< " front : " << its.front().info() << nl
            << " back  : " << its.back().info() << nl;

        Info<< "rewind():" << nl;
        reportPeek(its);

        its.skip(3);
        Info<< "skip(3):" << nl;
        reportPeek(its);

        its.skip(2);
        Info<< "skip(2):" << nl;
        reportPeek(its);

        its.skip(-2);
        Info<< "skip(-2):" << nl;
        reportPeek(its);

        its.skip(100);
        Info<< "skip(100):" << nl;
        reportPeek(its);

        its.skip(-1000);
        Info<< "skip(-1000):" << nl;
        reportPeek(its);
    }
}


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Main program:

int main(int argc, char *argv[])
{
    const char* charInput =
        "( const char input \"string\" to tokenize )\n"
        "List<label> 5(0 1 2 3 4);";

    string stringInput("( string     ;    input \"string\" to tokenize )");

    List<char> listInput
    (
        ListOps::create<char>
        (
            stringInput.cbegin(),
            stringInput.cend(),
            Foam::identityOp{}
        )
    );

    doTest("empty", "", true, true);

    doTest("char*", charInput, true, true);
    doTest("string", stringInput, true);
    doTest("List<char>", listInput, true);

    reverse(listInput);
    doTest("List<char>", listInput, true);

    Info<< "\nEnd\n" << endl;

    return 0;
}


// ************************************************************************* //