459aaad0f9
- use ignore instead of seekg/tellg to swallow input (robuster) - check for bad gcount() values - wrap Foam::fileSize() compressed/uncompressed handling into IFstream. - improve handling of compressed files in masterUncollatedFileOperation. Previously read into a string via stream iterators. Now read chunk-wise into a List of char for fewer reallocations.
147 lines
4.1 KiB
C
147 lines
4.1 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | www.openfoam.com
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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Copyright (C) 2020-2023 OpenCFD Ltd.
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Application
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Test-IFstream
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Description
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Tests on low-level reading
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\*---------------------------------------------------------------------------*/
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#include "argList.H"
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#include "Fstream.H"
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#include "OSspecific.H"
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#include "etcFiles.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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// Main program:
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int main(int argc, char *argv[])
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{
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argList::noBanner();
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argList::noParallel();
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argList::noParallel();
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argList::addOption("ignore", "file", "Test readRaw with ignore");
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#include "setRootCase.H"
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// Test with etc/controlDict (mandatory, from distribution)
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if (!args.found("ignore"))
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{
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const fileName inputFile
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(
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findEtcFile("controlDict", true, 0007)
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);
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Info<< nl << "Test getLine" << nl << inputFile << nl;
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IFstream is(inputFile);
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string buf;
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// Test that buffer resizing works as expected
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Info<< "buf: " << buf.size() << '/' << buf.capacity() << nl;
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bool skipDoc = true;
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while (is.good())
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{
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if (skipDoc || is.lineNumber() % 2)
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{
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is.getLine(buf);
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Info<< is.lineNumber() << ": "
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<< buf.size() << '/' << buf.capacity() << ' '
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<< buf << nl;
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if (buf.starts_with("Documentation"))
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{
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skipDoc = false;
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Info<< "Found Documentation: skip until closing '}'"
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<< " line number will now be incorrect"
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<< nl;
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auto n = is.getLine(nullptr, '}');
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Info<< is.lineNumber() << ": [" << label(n) << "]" << nl;
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}
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}
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else
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{
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auto n = is.getLine(nullptr);
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Info<< is.lineNumber() << ": [" << label(n) << "]" << nl;
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}
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}
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}
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fileName testFile;
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if (args.readIfPresent("ignore", testFile))
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{
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if (testFile.has_ext("gz"))
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{
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testFile.remove_ext();
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Info<< "stripping extraneous .gz ending" << endl;
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}
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IFstream is(testFile);
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auto& stdStream = is.stdStream();
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List<char> buffer(1000);
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Info<< "Test readRaw with: " << is.name()
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<< " compressed:" << int(is.compression())
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<< " file-size:" << is.fileSize() << nl;
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for (int iter = 0; is.good() && iter < 1000; ++iter)
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{
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Info<< "iter:" << iter;
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if (iter % 2)
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{
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Info<< " [read] ";
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is.readRaw(buffer.data(), buffer.size());
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}
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else
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{
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Info<< " [ignore]";
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is.readRaw(nullptr, buffer.size() / 2);
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}
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Info<< " : " << stdStream.gcount() << endl;
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}
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}
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Info<< "\nEnd\n" << endl;
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return 0;
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}
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// ************************************************************************* //
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