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#include <iostream>
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#include <string>
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#include <boost/filesystem.hpp>
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#include <boost/program_options.hpp>
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#include <boost/regex.hpp>
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#include "PhotoCompressArchiver.hh"
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// Alias the namespace for readability
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namespace bpo = boost::program_options;
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void header()
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{
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std::cout << BOLD << "Photo Compress Archiver -- " << version << "\n" << ENDC;
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std::cout << " Copyright 2017-2018 -- David Sorber\n";
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std::cout << " >>> Utilizing packJPG by Matthias Stirner\n" << std::endl;
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}
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void usage(char** argv)
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{
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// Remove leading "./" if it exits
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char* app_name = argv[0];
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if (argv[0][0] == '.' && argv[0][1] == '/')
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{
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char* app_name = &argv[0][2];
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}
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header();
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std::cout << "USAGE: " << app_name << " [-hdk] [-t <num threads>] "
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<< "[-f <filter regex>] <file path>\n\n";
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std::cout << "Positional arguments:\n";
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std::cout << " <file path> path in which to recursively look "
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<< "for input files\n\n";
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std::cout << "General options:\n";
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std::cout << " -h [ --help ] display this help message\n";
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std::cout << " -d [ --decompress ] find '*.pjg' files and decompress them\n";
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std::cout << " -k [ --delete-orig ] delete original files\n";
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std::cout << " -t [ --num-threads ] number of processing threads to use (max 2x system cores)\n";
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std::cout << " -f [ --filter ] regex with which to filter out input files\n";
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std::cout << std::endl;
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}
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// NOTE: useful filter: -f ^\\._.+$
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int main(int argc, char** argv)
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{
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uint32_t num_cores = std::thread::hardware_concurrency();
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uint32_t num_threads = 0;
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std::string search_path("");
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std::string filter_str("");
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bpo::variables_map general_opts_vm;
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try
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{
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// General options
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bpo::options_description general_opts("General options");
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general_opts.add_options()
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("help,h", "display this help message")
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("decompress,d", "find '*.pjg' files and decompress them")
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("delete-orig,k", "delete orignal files")
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("num-threads,t",
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bpo::value<uint32_t>(&num_threads)->default_value(num_cores),
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"number of processing threads to use")
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("filter,f",
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bpo::value<std::string>(&filter_str),
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"regex with which to filter out input files")
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// Note this has to be here even though it's a positional argument
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("file_path", bpo::value<std::string>(&search_path)->required(),
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"path in which to recursively look for input files")
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;
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// Positional arguments
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bpo::positional_options_description pos_opts;
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pos_opts.add("file_path", 1);
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// Parse general/positional options
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bpo::store(bpo::command_line_parser(argc, argv)
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.options(general_opts)
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.positional(pos_opts).run(),
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general_opts_vm);
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// Display help if the option is listed or if no arguments are provided
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if (general_opts_vm.count("help") || (argc == 1))
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{
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usage(argv);
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return 0;
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}
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bpo::notify(general_opts_vm);
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}
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catch (std::exception& e)
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{
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std::cerr << BOLD << RED << "\nERROR: " << ENDC << e.what() << "\n"
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<< std::endl;
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return -1;
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}
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// Make sure that path specified actually exists before proceeding
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if (! bfs::exists(search_path))
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{
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std::cerr << BOLD << RED << "\nERROR: " << ENDC << "the path \""
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<< search_path << "\" does not exist\n" << std::endl;
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return -2;
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}
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// Validate number of threads
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if (num_threads > (2 * std::thread::hardware_concurrency()))
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{
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std::cerr << BOLD << RED << "\nERROR: " << ENDC << "the maximum number "
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<< "of threads is: " << (2 * num_cores) << "(2 * " << num_cores
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<< ")\n" << std::endl;
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return -2;
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}
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// Check for, and if present validate the filter regex
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boost::regex filter_regex("");
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if (general_opts_vm.count("filter"))
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{
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try
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{
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filter_regex = filter_str;
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}
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catch (std::exception& e)
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{
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std::cerr << BOLD << RED << "ERROR: " << ENDC << "the filter \""
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<< filter_str << "\" is not a valid regular expression.\n";
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std::cerr << " " << e.what() << std::endl;
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return -1;
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}
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}
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// Display header and options
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header();
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std::cout << " [" << num_cores << " cores detected]\n" << std::endl;
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std::cout << BOLD << ">>> Options:" << ENDC << std::endl;
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// Decode/store decompress option
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bool decompress = false;
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if (general_opts_vm.count("decompress"))
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{
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decompress = true;
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}
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std::cout << " decompress mode => " << (decompress ? "ON" : "OFF")
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<< std::endl;
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// Decode/store delete-orig option
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bool delete_orig = false;
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if (general_opts_vm.count("delete-orig"))
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{
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delete_orig = true;
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}
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std::cout << " delete original files => " << (delete_orig ? "ON" : "OFF")
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<< std::endl;
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// Number of processing threads option
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std::cout << " num processing threads => " << num_threads << std::endl;
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// Filter regex option
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if (general_opts_vm.count("filter"))
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{
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std::cout << " filter regex => ON (" << filter_str << ")\n";
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}
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std::cout << std::endl;
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// Create the PCA object and let 'er rip!
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auto pca = new PhotoCompressArchiver(search_path, num_threads, decompress,
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delete_orig, filter_regex);
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pca->execute();
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delete pca;
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return 0;
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}
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