poddl.hpp

/*
 MIT License
 
 Copyright (c) 2019 Fredrik B
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 
 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
*/

#include <stdio.h>
#include <errno.h>
#include <algorithm>
#include <sstream>
#include <string>
#include <list>
#include <vector>
#include <iostream>
#include <fstream>
#include <regex>
#include <map>
#include <cstdlib>
#include <cctype>
#include <limits>
#include <chrono>
#include <iomanip>
#include <locale>
#include <ctime>

#ifdef _WIN32
//windows
#define NOMINMAX
#define CURL_STATICLIB
#include <windows.h>
#include <shlwapi.h>
#include <direct.h>
#pragma comment(lib, "Shlwapi.lib")
#pragma comment(lib, "Normaliz.lib")
#pragma comment(lib, "Advapi32.lib")
#pragma comment(lib, "Ws2_32.lib")
#pragma comment(lib, "Wldap32.lib")
#pragma comment(lib, "Crypt32.lib")
#pragma comment(lib, "secur32.lib")
#ifdef WINARM64
#include "../wincurl-arm64/curl.h"
#pragma comment(lib, "../wincurl-arm64/libcurl_a.lib")
#else
#include "../wincurl-x64/curl.h"
#pragma comment(lib, "../wincurl-x64/libcurl_a.lib")
#endif
#else
//unix
#include <unistd.h>
#include <dirent.h>
#include <string.h>
#include <sys/stat.h>
#ifdef CURL_STATICLIB
#include "../libcurl/curl.h"
#else
#include <curl/curl.h>
#endif
#endif

struct Podcast {
    int number = 0;
    std::string url;
    std::string title;
    std::string ext;
    std::size_t timestamp = 0;
    std::string pubdate_str {};
};

struct Options {
    bool list_only = false;
    bool short_names = false;
    bool newest_first = false;
    bool stop_when_file_found = false;
    bool append_episode_nr = false;
    bool append_publish_date = false;
    bool replace_whitespace = false;
    
    int episode_from = -1;
    int episode_to = -1;
    size_t take = 0;
    size_t zero_padded_episode_nr = 0;
    size_t truncate_names = 0;
    std::string whitespace_replace_str {};
    
    std::string stop_when_file_found_string {};
    std::string url {};
    std::string path {};
};

class Parser {
public:
    std::vector<Podcast> get_items(const std::string &xml, bool reverse);
};

class Helper {
public:
    static void debug_print_options(const Options &options);
    static Options get_options(const std::vector<std::string> &args);
    static std::vector<Podcast> get_subset(std::vector<Podcast> &items, int number_from, int number_to);
    static bool string_exists(const std::string &input, const std::string &search);
    static std::string clean_filename(std::string input);
    static std::string url_encode_lazy(std::string input);
    static std::string get_extension(std::string input);
    static std::string get_zero_padded_number_string(const size_t number, const size_t leading_zeros);
    static std::time_t rfc_time_to_timestamp(const std::string &input);
    static std::string time_to_iso_date_string(const std::time_t &time);
    static std::string trim(const std::string& s);
    static void replace_whitespace(std::string &input, const std::string &replacement);
#ifdef _WIN32
    static std::wstring utf8_to_wide_win_string(std::string input);
    static std::string wide_win_string_to_utf8(std::wstring input);
    static std::vector<std::string> get_args(int argc, const wchar_t *argv[]);
#else
    static std::vector<std::string> get_args(int argc, const char *argv[]);
#endif
};

class FileSystem {
public:
#ifdef _WIN32
    static bool directory_exists(std::wstring path);
    static bool create_directory(std::wstring path);
    static bool delete_directory(std::wstring path);
    static bool file_exists(std::wstring path);
    static bool move_file(std::wstring from, std::wstring to);
    static bool directory_is_empty(std::wstring path);
    static bool create_directory_if_not_exists(std::wstring path);
#else
    static bool directory_exists(std::string path);
    static bool create_directory(std::string path);
    static bool delete_directory(std::string path);
    static bool file_exists(std::string path);
    static bool move_file(std::string from, std::string to);
    static bool directory_is_empty(std::string path);
    static bool create_directory_if_not_exists(std::string path);
#endif
};

class Client {
private:
    static size_t curl_write(void* buffer, size_t size, size_t nmemb, void* output_ptr);
    static CURLcode curl_read(const std::string& url, std::ostream& output_stream);
public:
    Client();
    ~Client();
    static bool get_string_stream(std::string url, std::ostringstream &output_stream);
    static bool write_file_stream(std::string url, std::ofstream &output_stream);
};