// ***************************************************************** -*- C++ -*-

/*

  Abstract:  Print a simple comma separated list of tags defined in Exiv2

  File:      taglist.cpp

  Author(s): Andreas Huggel (ahu) <ahuggel@gmx.net>

  History:   07-Jan-04, ahu: created

 */

// *****************************************************************************

#include <exiv2/exiv2.hpp>

#include <iostream>

#include <string>

#include <sstream>

using namespace Exiv2;

int main(int argc, char* argv[])

{

    Exiv2::XmpParser::initialize();

    ::atexit(Exiv2::XmpParser::terminate);

    int rc = EXIT_SUCCESS;

    std::ostringstream out;

    try {

        bool bHelp     = false;

        switch (argc) {

            case 2: {

                std::string item(argv[1]);

                if ( item == "--help" ) {

                    bHelp = true;

                    break;

                }

                if (item == "Groups") {

                    const GroupInfo* groupList = ExifTags::groupList();

                    if (groupList) {

                        while (groupList->tagList_) {

                            std::cout << groupList->groupName_ << std::endl;

                            groupList++;

                        }

                    }

                    break;

                }

                if (item == "all" || item == "ALL" ) {

                    const GroupInfo* groupList = ExifTags::groupList();

                    if (groupList) {

                        std::string line;

                        while (groupList->tagList_) {

                            std::ostringstream tags;

                            ExifTags::taglist(tags,groupList->groupName_);

                            std::istringstream input(tags.str()) ;

                            while (std::getline(input, line)) {

                                std::cout << groupList->groupName_ << "."

                                          << (item == "all" ? line.substr(0,line.find(",")) : line)

                                          << std::endl;

                            }

                            groupList++;

                        }

                    }

                    break;

                }

                if (item == "Exif") {

                    ExifTags::taglist(std::cout);

                    break;

                }

                if (item == "Iptc") {

                    IptcDataSets::dataSetList(std::cout);

                    break;

                }

                if (ExifTags::isExifGroup(item) || ExifTags::isMakerGroup(item)) {

                    ExifTags::taglist(std::cout, item);

                    break;

                }

                try {

                    XmpProperties::printProperties(std::cout, item);

                    break;

                } catch (const AnyError&) {

                    rc = 2;

                }

                std::cerr << "Unexpected argument "  << argv[1] << std::endl;

                break;

            }

            case 1:

                ExifTags::taglist(std::cout);

                break;

            case 3: {

                std::string item(argv[1]);

                std::string name(argv[2]);

                rc = EXIT_FAILURE;  // assume unhappy ending!

                if (item == "--group") {

                    if ( ExifTags::isExifGroup(name) ) {

                        ExifTags::taglist(std::cout,name);

                        rc = EXIT_SUCCESS;  // result is good

                    } else {

                        std::cerr << "warning:"

                                  << name

                                  << " is not a valid Exif group name "

                                  << std::endl

                                  ;

                        const GroupInfo* groupList = ExifTags::groupList();

                        if (groupList) {

                            while (rc && groupList->tagList_) {

                                if (name == groupList->groupName_) {

                                    const Exiv2::TagInfo* tagInfo = groupList->tagList_();

                                    while (tagInfo->tag_ != 0xFFFF) {

                                        std::cout << tagInfo->name_ << std::endl;

                                        tagInfo++;

                                    }

                                    rc = EXIT_SUCCESS;  // result is good

                                }

                                groupList++;

                            }

                        }

                    }

                }

            } break;

            default:

                rc = EXIT_FAILURE;

            break;

        }

        if (rc || bHelp) {

            std::cout << "Usage: taglist [--help]"                     << std::endl

                << "           [--group name|"                         << std::endl

                << "            Groups|Exif|Canon|CanonCs|CanonSi|CanonCf|Fujifilm|Minolta|Nikon1|Nikon2|Nikon3|Olympus|" << std::endl

                << "            Panasonic|Pentax|Sigma|Sony|Iptc|"                                                        << std::endl

                << "            dc|xmp|xmpRights|xmpMM|xmpBJ|xmpTPg|xmpDM|pdf|photoshop|crs|tiff|exif|aux|iptc|all|ALL"  << std::endl

                << "           ]"                                      << std::endl

                << "Print Exif tags, MakerNote tags, or Iptc datasets" << std::endl

                ;

        }

    } catch (AnyError& e) {

        std::cout << "Caught Exiv2 exception '" << e << "'\n";

        rc = EXIT_FAILURE ;

    }

    return rc;

}