patch_manager.cpp

#include "patch_manager.h"


void PatchManager::get_patch(
    std::string domain, std::string port, std::string starting_uri_dir, std::string ignore_str
) 
{
    ignore_regex = boost::regex(ignore_str, boost::regex_constants::icase);

    downloader.init(domain, port, starting_uri_dir);
    download_patch_file();
    download_patch_contents();

    std::cout << std::endl;
    std::cout << "Patch list received" << std::endl;
    //downloader.run();
}

void PatchManager::download_patch_file()
{
    downloader.get("/patch.txt");
    downloader.run();
}


void PatchManager::download_patch_contents()
{ 
    std::string line = "";
    std::ifstream patch("patch/patch.txt");
    int index;
    int line_num = 0;
    std::string checksum;
    std::string filename;

    if(patch) {
        while(patch.good()) {
            getline(patch, line);

            if(line.empty()) {
                continue;
            }
            
            index = line.find("\t");
            if(index != std::string::npos) {
                filename = line.substr(0, index);
                checksum = line.substr(index + 1);

                // Do not try to download if the file is meant to be ignored
                if(!boost::regex_match(filename, ignore_regex)) {

                    // If the local file's checksum doesn't match the 
                    // checksum on the patch file, we know that the file is 
                    // out of date, so download it.
                    if(checksum != FileManager::checksum(filename)) {
                        downloader.get(filename, checksum);
                    }
                }
                else {
                    std::cout << filename << " ignored" << std::endl;
                }
            }
            else {
                std::cout << std::endl << "Invalid line in patch file: " << line_num << std::endl;
            }

            std::cout << ".";
            ++line_num;
        }
        
        patch.close();
    }
    else {
        std::cout << "Could not open local patch file in patch/patch.txt" << std::endl;
    }
}