metacopy.cpp

Demonstrates copying metadata from one image to another

// ***************************************************************** -*- C++ -*-
/*
* This program is part of the Exiv2 distribution.
*
* 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., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
*/
/*
Abstract : Tester application for image file handling
File : metacopy.cpp
Author(s): Brad Schick (brad) <brad@robotbattle.com>
History : 13-Jul-04, brad: created
*/
// *****************************************************************************
// included header files
#include <exiv2/exiv2.hpp>
#include <iostream>
#include <fstream>
#include <cassert>
// include local header files which are not part of libexiv2
#include "getopt.hpp"
#include "metacopy.hpp"
// *****************************************************************************
// Main
int main(int argc, char* const argv[])
{
try {
// Handle command line arguments
Params params;
if (params.getopt(argc, argv)) {
params.usage();
return 1;
}
if (params.help_) {
params.help();
return 2;
}
// Use MemIo to increase test coverage.
Exiv2::BasicIo::AutoPtr fileIo(new Exiv2::FileIo(params.read_));
memIo->transfer(*fileIo);
assert(readImg.get() != 0);
readImg->readMetadata();
assert(writeImg.get() != 0);
if (params.preserve_) writeImg->readMetadata();
if (params.iptc_) {
writeImg->setIptcData(readImg->iptcData());
}
if (params.exif_) {
writeImg->setExifData(readImg->exifData());
}
if (params.comment_) {
writeImg->setComment(readImg->comment());
}
if (params.xmp_) {
writeImg->setXmpData(readImg->xmpData());
}
try {
writeImg->writeMetadata();
}
catch (const Exiv2::AnyError&) {
std::cerr << params.progname() <<
": Could not write metadata to (" << params.write_ << ")\n";
return 8;
}
return 0;
}
catch (Exiv2::AnyError& e) {
std::cerr << "Caught Exiv2 exception '" << e << "'\n";
return 10;
}
}
int Params::option(int opt, const std::string& /*optarg*/, int optopt)
{
int rc = 0;
switch (opt) {
case 'h': help_ = true; break;
case 'i': iptc_ = true; break;
case 'e': exif_ = true; break;
case 'c': comment_ = true; break;
case 'x': xmp_ = true; break;
case 'p': preserve_ = true; break;
case 'a':
iptc_ =true;
exif_ =true;
comment_ =true;
xmp_ =true;
break;
case ':':
std::cerr << progname() << ": Option -" << static_cast<char>(optopt)
<< " requires an argument\n";
rc = 1;
break;
case '?':
std::cerr << progname() << ": Unrecognized option -"
<< static_cast<char>(optopt) << "\n";
rc = 1;
break;
default:
std::cerr << progname()
<< ": getopt returned unexpected character code "
<< std::hex << opt << "\n";
rc = 1;
break;
}
return rc;
}
int Params::nonoption(const std::string& argv)
{
if (!write_.empty()) {
std::cerr << progname() << ": Unexpected extra argument (" << argv << ")\n";
return 1;
}
if (first_) read_ = argv;
else write_ = argv;
first_ = false;
return 0;
}
int Params::getopt(int argc, char* const argv[])
{
int rc = Util::Getopt::getopt(argc, argv, optstring_);
// Further consistency checks
if (help_==false) {
if (rc==0 && read_.empty() ) {
std::cerr << progname() << ": Read and write files must be specified\n";
rc = 1;
}
if (rc==0 && write_.empty() ) {
std::cerr << progname() << ": Write file must be specified\n";
rc = 1;
}
if (preserve_ && iptc_ && exif_ && comment_ && xmp_ ) {
std::cerr << progname() << ": Option -p has no effect when all metadata types are specified.\n";
rc = 1;
}
}
return rc;
} // Params::getopt
void Params::usage(std::ostream& os) const
{
os << "\nReads and writes raw metadata. Use -h option for help.\n"
<< "Usage: " << progname()
<< " [-iecaph] readfile writefile\n";
}
void Params::help(std::ostream& os) const
{
usage(os);
os << "\nOptions:\n"
<< " -i Read Iptc data from readfile and write to writefile.\n"
<< " -e Read Exif data from readfile and write to writefile.\n"
<< " -c Read Jpeg comment from readfile and write to writefile.\n"
<< " -x Read XMP data from readfile and write to writefile.\n"
<< " -a Read all metadata from readfile and write to writefile.\n"
<< " -p Preserve existing metadata in writefile if not replaced.\n"
<< " -h Display this help and exit.\n\n";
} // Params::help