main.cpp

#include <cstring>
#include <filesystem>
#include <iostream>
#include <ncurses.h>
#include <string>
#include <vector>

const char *name = "Terminal Explorer";
std::string path = "";
std::vector<std::pair<int, std::string>> list;
bool hidden = false;
int start, sel;

int get_type(std::string p)
{
  std::filesystem::path pth(p);
  std::error_code ec;
  if (std::filesystem::is_directory(pth, ec))
  {
    return 1;
  }
  return 0;
}

int getlist()
{
  list.clear();
  FILE *l;
  std::string modified_path = "";
  for (int i = 0; i < path.size(); i++)
  {
    if (path[i] == ' ' || path[i] == '\'' || path[i] == '\"' ||
        path[i] == '\\' || path[i] == '(' || path[i] == ')')
      modified_path += '\\';
    modified_path += path[i];
  }
  if (hidden)
    l = popen(std::string("ls -A ").append(modified_path).c_str(), "r");
  else
    l = popen(std::string("ls ").append(modified_path).c_str(), "r");
  if (l != NULL)
  {
    while (true)
    {
      char *line;
      char buff[1000];
      line = fgets(buff, sizeof(buff), l);
      if (line == NULL)
        break;
      std::string fpath = line;
      fpath = fpath.substr(0, fpath.size() - 1);
      list.push_back(std::make_pair(get_type(path + "/" + fpath), fpath));
    }
  }
  else
  {
    pclose(l);
    return 1;
  }
  pclose(l);
  return 0;
}

void printmenu(int sel, int start = 0)
{
  clear();
  attron(A_BOLD);
  attron(A_UNDERLINE);
  printw(name);
  attroff(A_BOLD);
  attroff(A_UNDERLINE);
  mvprintw(0, getmaxx(stdscr) - path.size(), path.c_str());
  int cr = 1;
  for (int i = start; i < list.size(); i++)
  {
    if (cr == getmaxy(stdscr) - 3)
      break;
    if (sel == i)
      attron(A_REVERSE);
    if (list[i].first)
      attron(A_BOLD);
    mvprintw(cr++, 0, "%s", list[i].second.c_str());
    if (list[i].first)
      attroff(A_BOLD);
    if (sel == i)
      attroff(A_REVERSE);
  }
  for (int i = 0; i < getmaxx(stdscr); i++)
    mvprintw(getmaxy(stdscr) - 3, i, "_");
  refresh();
}

void openf(std::string path)
{
  std::string modified_path = "";
  for (int i = 0; i < path.size(); i++)
  {
    if (path[i] == ' ' || path[i] == '\'' || path[i] == '\"' ||
        path[i] == '\\' || path[i] == '(' || path[i] == ')')
      modified_path += '\\';
    modified_path += path[i];
  }
  system(std::string("xdg-open ")
             .append(modified_path)
             .append(std::string(" > /dev/null 2>&1"))
             .c_str());
}

void openVim(std::string path)
{
  std::string modified_path = "";
  for (int i = 0; i < path.size(); i++)
  {
    if (path[i] == ' ' || path[i] == '\'' || path[i] == '\"' ||
        path[i] == '\\' || path[i] == '(' || path[i] == ')')
      modified_path += '\\';
    modified_path += path[i];
  }
  system(std::string("tmux new-window vim ").append(modified_path).c_str());
}

bool isValidChar(int c)
{
  if (c == '/' || c == KEY_UP || c == '\n' || c == KEY_DOWN || c == KEY_RIGHT ||
      c == KEY_LEFT || c == 27)
    return false;
  return true;
}

int main(int argc, char* argv[])
{
  path = std::getenv("HOME");
  if(argc > 1) {
      FILE* pwd = popen(std::string("cd ").append(argv[1]).append("; pwd").c_str(),"r");
      char buff[1000];
      char* line;
      line = fgets(buff,sizeof(buff),pwd);
      path = line;
      path = path.substr(0,path.size()-1);
      pclose(pwd);
  }
  initscr();
  clear();
  noecho();
  curs_set(0);
  cbreak();
  keypad(stdscr, true);
  getlist();
  sel = 0, start = 0;
  printmenu(sel);
  int in = 0;
  while ((in = getch()) != 27 && in != 'q' && in != 'Q')
  {
  keychk:
    if (in == KEY_DOWN)
    {
      sel = (sel + 1) % list.size();
      if ((sel - start) > getmaxy(stdscr) - 5)
        start = sel - getmaxy(stdscr) + 5;
      if (sel < start)
        start = sel;
      printmenu(sel, start);
    }
    else if (in == KEY_UP)
    {
      sel = (sel + list.size() - 1) % list.size();
      if ((sel - start) > getmaxy(stdscr) - 5)
        start = sel - getmaxy(stdscr) + 5;
      if (sel < start)
        start = sel;
      printmenu(sel, start);
    }
    else if (in == KEY_LEFT)
    {
      path = path.substr(0, path.find_last_of('/'));
      if (path.size() == 0)
        path = "/";
      getlist();
      sel = 0;
      start = 0;
      printmenu(sel);
    }
    else if (in == KEY_RIGHT || in == '\n')
    {
      if (list[sel].first)
      {
        path = path + "/" + list[sel].second;
        getlist();
        sel = 0;
        start = 0;
        printmenu(sel);
      }
      else
      {
        openf(path + "/" + list[sel].second);
      }
    }
    else if (in == 'v' || in == 'V')
    {
      openVim(path + "/" + list[sel].second);
    }
    else if (in == 'r' || in == 'R')
    {
      getlist();
      sel = 0;
      start = 0;
      printmenu(sel);
    }
    else if (in == 'h' || in == 'H')
    {
      hidden = !hidden;
      getlist();
      printmenu(sel);
    }
    else if (in == 'f' || in == 'F')
    {
      openf(path);
    }
    else if (in == 't' || in == 'T')
    {
      std::string modified_path = "";
      for (int i = 0; i < path.size(); i++)
      {
        if (path[i] == ' ' || path[i] == '\'' || path[i] == '\"' ||
            path[i] == '\\' || path[i] == '(' || path[i] == ')')
          modified_path += '\\';
        modified_path += path[i];
      }
      system(std::string("tmux new-window -c ")
                 .append(modified_path)
                 .c_str());
    }
    else if (in == 's' || in == 'S')
    {
      int si = 0;
      while (isValidChar(in = getch()))
      {
        for (int i = 0; i < list.size(); i++)
        {
          if (si > list[i].second.size())
            continue;
          if (si == 0 && list[i].second[si] == '.')
          {
            if (list[i].second.size() > 1 && list[i].second[1] < in)
              continue;
            else if (list[i].second.size() <= 1)
              continue;
          }
          if (list[i].second[si] >= 'A' && list[i].second[si] <= 'Z')
          {
            if (in > (list[i].second[si] + 32))
              continue;
          }
          else if (in > list[i].second[si])
            continue;
          if (si == list[i].second[si] == in ||
              (in == (list[i].second[si] + 32) && list[i].second[si] >= 'A' &&
               list[i].second[si] <= 'Z'))
            si++;
          sel = i;
          start = i;
          printmenu(sel, start);
          break;
        }
      }
      goto keychk;
    }
    else if (in == KEY_DC)
    {
      std::string modified_path = "";
      std::string pth = path + "/" + list[sel].second;
      for (int i = 0; i < pth.size(); i++)
      {
        if (pth[i] == ' ' || pth[i] == '\'' || pth[i] == '\"' ||
            pth[i] == '\\' || pth[i] == '(' || pth[i] == ')')
          modified_path += '\\';
        modified_path += pth[i];
      }
      system(std::string("trash-put ")
                 .append(modified_path)
                 .append(std::string(" > /dev/null 2>&1"))
                 .c_str());
      getlist();
      printmenu(sel, start);
    }
  }
  endwin();
}