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exifprint.cpp
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// ***************************************************************** -*- C++ -*-
/*
* Copyright (C) 2004-2021 Exiv2 authors
* 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.
*/
#include <exiv2/exiv2.hpp>
#include <iostream>
#include <iomanip>
#include <set>
#include <cassert>
#include <regex>
// https://github.com/Exiv2/exiv2/issues/468
#if defined(EXV_UNICODE_PATH) && defined(__MINGW__)
#undef EXV_UNICODE_PATH
#endif
#ifdef EXV_UNICODE_PATH
#define _tchar wchar_t
#define _tstrcmp wcscmp
#define _t(s) L##s
#define _tcout wcout
#define _tmain wmain
#else
#define _tchar char
#define _tstrcmp strcmp
#define _t(s) s
#define _tcout cout
#define _tmain main
#endif
// copied from src/tiffvisitor_int.cpp
static const Exiv2::TagInfo* findTag(const Exiv2::TagInfo* pList,uint16_t tag)
{
while ( pList->tag_ != 0xffff && pList->tag_ != tag ) pList++;
return pList->tag_ != 0xffff ? pList : NULL;
}
int _tmain(int argc, _tchar* const argv[])
try {
Exiv2::XmpParser::initialize();
::atexit(Exiv2::XmpParser::terminate);
#ifdef EXV_ENABLE_BMFF
Exiv2::enableBMFF();
#endif
const _tchar* prog = argv[0];
if (argc == 1) {
std::_tcout << _t("Usage: ") << prog << _t(" [ [--lint] path | --version | --version-test ]") << std::endl;
return 1;
}
int rc = 0 ;
const _tchar* file = argv[1];
bool bLint = _tstrcmp(file,_t("--lint")) == 0 && argc == 3;
if ( bLint ) file= argv[2];
if ( _tstrcmp(file,_t("--version")) == 0 ) {
std::vector<std::regex> keys;
Exiv2::dumpLibraryInfo(std::cout,keys);
return rc;
} else if ( _tstrcmp(file,_t("--version-test")) == 0 ) {
// verifies/test macro EXIV2_TEST_VERSION
// described in include/exiv2/version.hpp
std::cout << "EXV_PACKAGE_VERSION " << EXV_PACKAGE_VERSION << std::endl
<< "Exiv2::version() " << Exiv2::version() << std::endl
<< "strlen(Exiv2::version()) " << ::strlen(Exiv2::version()) << std::endl
<< "Exiv2::versionNumber() " << Exiv2::versionNumber() << std::endl
<< "Exiv2::versionString() " << Exiv2::versionString() << std::endl
<< "Exiv2::versionNumberHexString() " << Exiv2::versionNumberHexString() << std::endl
;
// Test the Exiv2 version available at runtime but compile the if-clause only if
// the compile-time version is at least 0.15. Earlier versions didn't have a
// testVersion() function:
#if EXIV2_TEST_VERSION(0,15,0)
if (Exiv2::testVersion(0,13,0)) {
std::cout << "Available Exiv2 version is equal to or greater than 0.13\n";
} else {
std::cout << "Installed Exiv2 version is less than 0.13\n";
}
#else
std::cout << "Compile-time Exiv2 version doesn't have Exiv2::testVersion()\n";
#endif
return rc;
}
Exiv2::Image::UniquePtr image = Exiv2::ImageFactory::open(file);
assert(image.get() != 0);
image->readMetadata();
Exiv2::ExifData &exifData = image->exifData();
if (exifData.empty()) {
std::string error("No Exif data found in file");
throw Exiv2::Error(Exiv2::kerErrorMessage, error);
}
std::set<std::string> shortLong;
shortLong.insert("Exif.Photo.PixelXDimension");
shortLong.insert("Exif.Photo.PixelYDimension");
shortLong.insert("Exif.Photo.ImageLength");
shortLong.insert("Exif.Photo.ImageWidth");
shortLong.insert("Exif.Photo.RowsPerStrip");
shortLong.insert("Exif.Photo.StripOffsets");
shortLong.insert("Exif.Photo.StripByteCounts");
auto end = exifData.end();
for (auto i = exifData.begin(); i != end; ++i) {
if ( ! bLint ) {
const char* tn = i->typeName();
std::cout << std::setw(44) << std::setfill(' ') << std::left
<< i->key() << " "
<< "0x" << std::setw(4) << std::setfill('0') << std::right
<< std::hex << i->tag() << " "
<< std::setw(9) << std::setfill(' ') << std::left
<< (tn ? tn : "Unknown") << " "
<< std::dec << std::setw(3)
<< std::setfill(' ') << std::right
<< i->count() << " "
<< std::dec << i->toString()
<< "\n";
} else {
const Exiv2::TagInfo* tagInfo = findTag( Exiv2::ExifTags::tagList(i->groupName()),i->tag() );
if ( tagInfo ) {
Exiv2::TypeId type = i->typeId();
if ( type!= tagInfo-> typeId_
&&!(tagInfo->typeId_ == Exiv2::comment && type == Exiv2::undefined) // comment is stored as undefined
&&!(shortLong.find(i->key())!=shortLong.end() &&(type == Exiv2::unsignedShort||type==Exiv2::unsignedLong)) // can be short or long!
) {
std::cerr << i->key()
<< " type " << i->typeName() << " (" << type << ")"
<< " expected " << Exiv2::TypeInfo::typeName(tagInfo-> typeId_) << " (" << tagInfo-> typeId_ << ")"
<< std::endl;
rc=2;
}
}
}
}
return rc;
}
//catch (std::exception& e) {
//catch (Exiv2::AnyError& e) {
catch (Exiv2::Error& e) {
std::cout << "Caught Exiv2 exception '" << e.what() << "'\n";
return -1;
}