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// ***************************************************************** -*- C++ -*-
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/*
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* Copyright (C) 2004-2017 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., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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Abstract : Test application to extract metadata from image to exv file
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*/
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// *****************************************************************************
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// included header files
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#include <exiv2/exiv2.hpp>
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#include <iostream>
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#include <fstream>
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#include <cassert>
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#include "utils.hpp"
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#include "toexv.hpp"
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static size_t exifMetadataCount(Exiv2::Image::AutoPtr& image)
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{
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size_t result = 0 ;
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Exiv2::ExifData& exif = image->exifData();
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Exiv2::ExifData::const_iterator end = exif.end();
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for (Exiv2::ExifData::const_iterator i = exif.begin(); i != end; ++i) result++;
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return result;
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}
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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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try {
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// Handle command line arguments
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Params params(":iecCahsx");
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if (params.getopt(argc, argv)) return params.usage();
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if (params.help_ ) return params.help();
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Exiv2::Image::AutoPtr readImage = Exiv2::ImageFactory::open(params.read_);
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assert(readImage.get() != 0);
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readImage->readMetadata();
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if ( params.write_ == "+" ) {
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std::cout << "exifMetadataCount = " << exifMetadataCount(readImage) << std::endl;
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// create an in-memory file and write the metadata
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Exiv2::BasicIo::AutoPtr memIo (new Exiv2::MemIo());
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Exiv2::Image::AutoPtr memImage(new Exiv2::ExvImage(memIo,true));
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memImage->setMetadata (*readImage);
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memImage->writeMetadata();
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// serialize the in-memory file into buff
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size_t size = memImage->io().size();
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Exiv2::byte buff[size];
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memImage->io().seek(0,Exiv2::BasicIo::beg);
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memImage->io().read(buff,size);
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std::cout << "size = " << size << std::endl;
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// create an in-memory file with buff and read the metadata into buffImage
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Exiv2::BasicIo::AutoPtr buffIo (new Exiv2::MemIo(buff,size));
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Exiv2::Image::AutoPtr buffImage(new Exiv2::ExvImage(buffIo,false));
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assert(buffImage.get() != 0);
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buffImage->readMetadata();
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std::cout << "exifMetadataCount = " << exifMetadataCount(buffImage) << std::endl;
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} else if ( params.write_ != "-" ) {
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// create a file and write the metadata
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Exiv2::Image::AutoPtr writeImage = Exiv2::ImageFactory::create(Exiv2::ImageType::exv,params.write_);
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params.copyMetadata(readImage,writeImage);
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} else {
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// create an in-memory file
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Exiv2::BasicIo::AutoPtr memIo (new Exiv2::MemIo());
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Exiv2::Image::AutoPtr memImage(new Exiv2::ExvImage(memIo,true));
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params.copyMetadata(readImage,memImage);
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// read a few bytes from the in-memory file
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size_t size = memImage->io().size();
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if (size>32) size = 32;
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Exiv2::byte data[size];
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memImage->io().seek(0,Exiv2::BasicIo::beg);
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memImage->io().read(data,size);
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// dump the bytes
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for ( size_t i = 0 ; i < size ; i++ ) {
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char c = (char) data[i] ;
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if ( !isascii(c) ) c = '.' ;
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std::cout << c ;
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}
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std::cout << std::endl;
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}
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return 0;
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} catch (Exiv2::AnyError& e) {
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std::cerr << "Caught Exiv2 exception '" << e << "'\n";
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return 3;
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}
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}
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Params::Params( const char* opts)
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: optstring_(opts)
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, first_(true)
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, help_(false)
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, iptc_(false)
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, exif_(false)
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, ICC_(false)
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, all_(false)
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, comment_(false)
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, xmp_(false)
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, size_(false)
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, usage_(false)
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{}
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void Params::copyMetadata(Exiv2::Image::AutoPtr& readImage,Exiv2::Image::AutoPtr& writeImage)
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{
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if (all_ ) writeImage->setMetadata (*readImage);
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if (iptc_ ) writeImage->setIptcData ( readImage->iptcData());
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if (exif_ ) writeImage->setExifData ( readImage->exifData());
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if (ICC_ ) writeImage->setIccProfile(*readImage->iccProfile());
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if (comment_) writeImage->setComment ( readImage->comment());
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if (xmp_ ) writeImage->setXmpData ( readImage->xmpData());
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writeImage->writeMetadata();
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if ( size_ ) std::cout << write_ << " " << writeImage->io().size() << std::endl;
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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': help_ = true ; break;
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case 'i': iptc_ = true ; break;
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case 'e': exif_ = true ; break;
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case 'c': comment_ = true ; break;
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case 'C': ICC_ = true ; break;
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case 'x': xmp_ = true ; break;
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case 'a': all_ = true ; break;
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case 's': size_ = true ; break;
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case 'p': /* ignore for backwards compatibility */ ; 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 " << (char) opt
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<< " 0x" << std::hex << opt << "\n";
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rc = 1;
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break;
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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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if (!write_.empty()) {
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std::cerr << progname() << ": Unexpected extra argument (" << argv << ")\n";
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return 1;
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}
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if (first_) read_ = argv;
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else write_ = argv;
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first_ = false;
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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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if ( argc == 1 ) usage_ = true;
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// Further consistency checks
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if ( !help_ && !usage_ ) {
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if (rc==0 && read_.empty() ) {
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std::cerr << progname() << ": Read and write files must be specified\n";
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rc = 1;
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}
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if (rc==0 && write_.empty() ) {
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std::cerr << progname() << ": Write file must be specified\n";
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rc = 1;
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}
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}
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if ( argc == 3 ) { all_ = true; size_ = true; }
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if ( usage_ ) return 2 ;
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return rc;
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}
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int Params::usage(std::ostream& os) const
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{
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os << "Reads and writes raw metadata. Use -h option for help.\n"
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<< "Usage: " << progname()
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<< " [-" << optstring_ << "]"
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<< " readfile {-|+|writefile}\n";
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return 2;
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}
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int 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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" -i Read Iptc data from readfile and write to writefile.\n"
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" -e Read Exif data from readfile and write to writefile.\n"
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" -c Read Jpeg comment from readfile and write to writefile.\n"
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" -C Read ICC profile from readfile and write to writefile.\n"
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" -x Read XMP data from readfile and write to writefile.\n"
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" -a Read all metadata from readfile and write to writefile.\n"
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" -s Print size of writefile.\n"
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" -h Display this help and exit.\n";
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return 1;
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}
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