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/**************************************************************************
* *
* Regina - A Normal Surface Theory Calculator *
* Identify the type (binary/XML) and version of a data file *
* *
* Copyright (c) 1999-2025, Ben Burton *
* For further details contact Ben Burton (bab@debian.org). *
* *
* 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. *
* *
* As an exception, when this program is distributed through (i) the *
* App Store by Apple Inc.; (ii) the Mac App Store by Apple Inc.; or *
* (iii) Google Play by Google Inc., then that store may impose any *
* digital rights management, device limits and/or redistribution *
* restrictions that are required by its terms of service. *
* *
* 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, see <https://www.gnu.org/licenses/>. *
* *
**************************************************************************/
#include "file/fileinfo.h"
#include <cstdlib>
#include <cstring>
#include <iostream>
void usage(const char* progName, const std::string& error = std::string()) {
if (! error.empty())
std::cerr << error << "\n\n";
std::cerr << "Usage:\n";
std::cerr << " " << progName << " <file> ...\n";
std::cerr << " " << progName
<< " [ -v, --version | -?, --help ]\n\n";
std::cerr << " -v, --version : Show which version of Regina "
"is being used\n";
std::cerr << " -?, --help : Display this help\n";
exit(1);
}
int main(int argc, char* argv[]) {
if (argc < 2)
usage(argv[0], "Please specify one or more files.");
// Check for standard arguments:
for (int i = 1; i < argc; ++i) {
if (strcmp(argv[i], "-?") == 0 || strcmp(argv[i], "--help") == 0)
usage(argv[0]);
if (strcmp(argv[i], "-v") == 0 || strcmp(argv[i], "--version") == 0) {
if (argc != 2)
usage(argv[0],
"Option --version cannot be used with "
"any other arguments.");
std::cout << PACKAGE_BUILD_STRING << std::endl;
exit(0);
}
}
for (int i = 1; i < argc; i++) {
if (argc != 2)
std::cout << "[ " << argv[i] << " ]\n";
auto info = regina::FileInfo::identify(argv[i]);
if (info)
info->writeTextLong(std::cout);
else
std::cout << "Unknown file format or file could not be opened.\n";
if (argc != 2)
std::cout << std::endl;
}
return 0;
}
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