Added exifprint utility
Andreas Huggel
22 years ago
parent
23c0d08f8f
commit
ee73fc397d
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// ***************************************************************** -*- C++ -*-
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/*
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* Copyright (C) 2004 Andreas Huggel <ahuggel@gmx.net>
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*
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* This program is part of the Exiv2 distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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Author(s): Andreas Huggel (ahu) <ahuggel@gmx.net>
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History:
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26-Jan-04, ahu: created
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RCS information
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$Name: $
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$Revision: 1.1 $
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*/
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// *****************************************************************************
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// included header files
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#include "exifprint.hpp"
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#include "tags.hpp"
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#include "exif.hpp"
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#include "utils.hpp"
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// + standard includes
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#include <iostream>
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#include <iomanip>
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#include <cstring>
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using namespace Exif;
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// *****************************************************************************
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// Main
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int main(int argc, char* const argv[])
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{
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// Handle command line arguments
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Params& params = Params::instance();
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if (params.getopt(argc, argv)) {
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params.usage();
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return 1;
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}
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if (params.help_) {
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params.help();
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return 0;
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}
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if (params.version_) {
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params.version();
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return 0;
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}
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ExifData exifData;
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int rc = exifData.read(argv[1]);
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if (rc == 0) {
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ExifData::const_iterator beg = exifData.begin();
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ExifData::const_iterator end = exifData.end();
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ExifData::const_iterator i = beg;
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for (; i != end; ++i) {
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std::cout << "0x"
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<< std::hex << std::setw(4) << std::setfill('0') << std::right
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<< i->tag() << " "
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<< std::setw(27) << std::setfill(' ') << std::left
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// << i->tagName() << " "
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<< i->key() << " "
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<< std::setw(17) << std::setfill(' ') << std::left
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<< i->typeName() << " "
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<< std::dec << std::setw(3)
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<< std::setfill(' ') << std::right
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<< i->count() << " "
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<< std::dec << i->value() << "\n";
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}
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}
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return rc;
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}
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// *****************************************************************************
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// class Params
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Params* Params::instance_ = 0;
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Params& Params::instance()
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{
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if (0 == instance_) {
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instance_ = new Params;
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}
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return *instance_;
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}
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void Params::version(std::ostream& os) const
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{
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os << "Exifprint 0.1\n\n"
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<< "Copyright (C) 2004 Andreas Huggel <ahuggel@gmx.net>\n";
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}
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void Params::usage(std::ostream& os) const
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{
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os << "Usage: " << progname()
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<< " [ -hv ] file ...\n\n"
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<< "Print the Exif metadata of the image files.\n";
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}
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void Params::help(std::ostream& os) const
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{
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usage(os);
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os << "\nOptions:\n"
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<< " -h Display this help and exit.\n"
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<< " -v Show the program version and exit.\n\n";
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}
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int Params::option(int opt, const std::string& optarg, int optopt)
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{
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int rc = 0;
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switch (opt) {
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case 'h':
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help_ = true;
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break;
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case 'v':
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version_ = true;
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break;
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case ':':
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std::cerr << progname() << ": Option -" << static_cast<char>(optopt)
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<< " requires an argument\n";
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rc = 1;
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break;
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case '?':
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std::cerr << progname() << ": Unrecognized option -"
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<< static_cast<char>(optopt) << "\n";
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rc = 1;
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break;
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default:
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std::cerr << progname()
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<< ": getopt returned unexpected character code "
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<< std::hex << opt << "\n";
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rc = 1;
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}
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return rc;
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}
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int Params::nonoption(const std::string& argv)
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{
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files_.push_back(argv);
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return 0;
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}
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int Params::getopt(int argc, char* const argv[])
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{
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int rc = Util::Getopt::getopt(argc, argv, optstring_);
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// Further consistency checks
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if (help_ || version_) return 0;
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if (0 == files_.size()) {
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std::cerr << progname() << ": At least one file is required\n";
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rc = 1;
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}
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return rc;
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}
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@ -0,0 +1,146 @@
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// ***************************************************************** -*- C++ -*-
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/*
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* Copyright (C) 2004 Andreas Huggel <ahuggel@gmx.net>
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*
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* This program is part of the Exiv2 distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*!
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@file exifprint.hpp
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@brief Utility to print Exif data of input files to standard out
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@version $Name: $ $Revision: 1.1 $
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@author Andreas Huggel (ahu)
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<a href="mailto:ahuggel@gmx.net">ahuggel@gmx.net</a>
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@date 26-Jan-04, ahu: created
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*/
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#ifndef EXIFPRINT_HPP_
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#define EXIFPRINT_HPP_
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// *****************************************************************************
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// included header files
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#include "utils.hpp"
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// + standard includes
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#include <string>
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#include <vector>
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#include <iostream>
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// *****************************************************************************
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// namespace extensions
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// *****************************************************************************
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// class declarations
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// *****************************************************************************
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// class definitions
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/*!
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@brief Implements the command line handling for the program.
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Derives from Util::Getopt to use the command line argument parsing
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functionalty provided there. This class is implemented as a Singleton,
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i.e., there is only one global instance of it, which can be accessed
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from everywhere.
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<b>Usage example:</b> <br>
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@code
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#include "exifprint.hpp"
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int main(int argc, char* const argv[])
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{
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Params& params = Params::instance();
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if (params.getopt(argc, argv)) {
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params.usage();
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return 1;
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}
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if (params.help_) {
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params.help();
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return 0;
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}
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if (params.version_) {
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params.version();
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return 0;
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}
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// do something useful here...
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return 0;
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}
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@endcode
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*/
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class Params : public Util::Getopt {
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private:
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std::string optstring_;
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public:
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/*!
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@brief Controls all access to the global Params instance.
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@return Reference to the global Params instance.
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*/
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static Params& instance();
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bool help_; //!< Help option flag.
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bool version_; //!< Version option flag.
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//! Container to store filenames.
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typedef std::vector<std::string> Files;
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Files files_; //!< List of non-option arguments.
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private:
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/*!
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@brief Default constructor. Note that optstring_ is initialized here.
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Private to force instantiation through instance().
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*/
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Params() : optstring_(":hv"),
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help_(false),
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version_(false) {}
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//! Prevent copy-construction: not implemented.
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Params(const Params& rhs);
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//! Pointer to the global Params object.
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static Params* instance_;
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public:
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/*!
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@brief Call Getopt::getopt() with optstring, perform consistency
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checks after all command line arguments are parsed.
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@param argc Argument count as passed to main() on program invocation.
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@param argv Argument array as passed to main() on program invocation.
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@return 0 if successful, >0 in case of errors.
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*/
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int getopt(int argc, char* const argv[]);
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//! Handle options and their arguments.
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virtual int option(int opt, const std::string& optarg, int optopt);
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//! Handle non-option parameters.
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virtual int nonoption(const std::string& argv);
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//! Print a minimal usage note to an output stream.
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void usage(std::ostream& os =std::cout) const;
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//! Print further usage explanations to an output stream.
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void help(std::ostream& os =std::cout) const;
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//! Print version information to an output stream.
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void version(std::ostream& os =std::cout) const;
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};
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#endif // #ifndef EXIFPRINT_HPP_
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