106 lines
2.6 KiB
C++
106 lines
2.6 KiB
C++
/* Program to navigate directories */
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#include <iostream>
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#include <fstream> //file I/O
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#include <string>
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#include <map>
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#include <unistd.h> //for get_current_dir() and chdir()
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#include "Directory.h"
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typedef std::string str_t;
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typedef std::pair<int, str_t> pair_t;
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typedef std::map<int, str_t> pairmap_t;
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/* Clearing the tty */
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#define CLEAR (std::cout << "\033[2J\033[;H") // \033[2J\033[;H is an ANSI escape sequence to clear the screen, ANSI is supported on most OS's
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pairmap_t /* Returns a std::map, constructed like the following: <index, file_name>*/
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display_directory_content()
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{
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//chdir(path.c_str());
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Directory dir(get_current_dir_name());
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int count=1;
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pairmap_t content_map;
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std::cout << "* Viewing contents of " << get_current_dir_name() << " *\n\n";
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while ((dir.read()) != NULL)
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{
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if (dir.type() == Types::DIR)
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{
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str_t dir_name = "/" + dir.name() + "/";
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std::cout << "* " << count << ": " << dir_name << '\n'; /* Prepend directories with slash */
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content_map.insert(pair_t( count, dir_name ));
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}
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else if (dir.type() == Types::FILE)
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{
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std::cout << "* " << count << ": " << dir.name() << '\n';
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content_map.insert(pair_t( count, dir.name() ));
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}
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count++;
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}
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return content_map;
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}
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void
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display_file_content(const str_t file_name) /* Displays the content of a file */
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{
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std::cout << "* Viewing contents of " << file_name << " *\n\n";
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std::ifstream file(file_name);
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if (file)
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{
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str_t line;
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while (getline(file, line))
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std::cout << line << "\n";
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}
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else std::cerr << "* Error viewing contents of " << file_name << " *\n";
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}
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int
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main(int argc, char *argv[])
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{
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if (!argv[1])
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chdir( get_current_dir_name() ) ; /* If argv is not specified we will then view the contents of current working directory */
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else chdir(argv[1]);
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CLEAR;
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pairmap_t map = display_directory_content();
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/* Program loop */
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while (true)
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{
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std::cout << "\nNavigate directory (0 to quit): ";
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unsigned option;
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std::cin >> option;
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if ( option == 0 ) break;
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if ( option > map.size() ) {std::cerr << "Invalid input"; continue;}
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if ( map[option][0] != '/' ) { /* If it doesn't start with a '/', we know it's a file */
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CLEAR;
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display_file_content(map[option]);
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{
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str_t temp;
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std::cout << "Return (\\n)";
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std::cin.ignore(); //Flush newline char
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getline(std::cin, temp);
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}
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CLEAR;
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display_directory_content();
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continue;
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}
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else
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{
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str_t path = get_current_dir_name() + map [option]; chdir( path.c_str() ); //Change current directory
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CLEAR;
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map = display_directory_content();
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}
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}
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return 0;
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}
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