Exiv2: exifprint.cpp

00001 // ***************************************************************** -*- C++ -*-
00002 // exifprint.cpp, $Rev: 1757 $
00003 // Sample program to print the Exif metadata of an image
00004 
00005 #include <exiv2/image.hpp>
00006 #include <exiv2/exif.hpp>
00007 #include <iostream>
00008 #include <iomanip>
00009 #include <cassert>
00010 
00011 int main(int argc, char* const argv[])
00012 try {
00013 
00014     if (argc != 2) {
00015         std::cout << "Usage: " << argv[0] << " file\n";
00016         return 1;
00017     }
00018 
00019     Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(argv[1]);
00020     assert(image.get() != 0);
00021     image->readMetadata();
00022 
00023     Exiv2::ExifData &exifData = image->exifData();
00024     if (exifData.empty()) {
00025         std::string error(argv[1]);
00026         error += ": No Exif data found in the file";
00027         throw Exiv2::Error(1, error);
00028     }
00029     Exiv2::ExifData::const_iterator end = exifData.end();
00030     for (Exiv2::ExifData::const_iterator i = exifData.begin(); i != end; ++i) {
00031         const char* tn = i->typeName();
00032         std::cout << std::setw(44) << std::setfill(' ') << std::left
00033                   << i->key() << " "
00034                   << "0x" << std::setw(4) << std::setfill('0') << std::right
00035                   << std::hex << i->tag() << " "
00036                   << std::setw(9) << std::setfill(' ') << std::left
00037                   << (tn ? tn : "Unknown") << " "
00038                   << std::dec << std::setw(3)
00039                   << std::setfill(' ') << std::right
00040                   << i->count() << "  "
00041                   << std::dec << i->value()
00042                   << "\n";
00043     }
00044 
00045     return 0;
00046 }
00047 catch (Exiv2::AnyError& e) {
00048     std::cout << "Caught Exiv2 exception '" << e << "'\n";
00049     return -1;
00050 }