hydra/shell.cpp

   1 /* Quarn OS
   2  *
   3  * Basic shell for Quarn
   4  *
   5  * Copyright (C) 2008-2009 Pawel Dziepak
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  */
  22
  23 #include "hydra.h"
  24 #include "ui.h"
  25 #include "label.h"
  26 #include "edit.h"
  27 #include "io.h"
  28
  29 class shell : public hydra::application {
  30 public:
  31         void init();
  32         void command(p<hydra::form>);
  33 };
  34
  35 hydra_app_class(shell)
  36
  37 void shell::init() {
  38         set_ui(hydra::ui::ui_console);
  39         delegate<void, p<hydra::form> > onFilled;
  40         onFilled.method(this, &shell::command);
  41
  42         hydra::form *welc = new hydra::form(this);
  43         new hydra::label(welc, "Welcome to Quarn OS\n\n","welcome");
  44
  45         hydra::form *main = new hydra::form(this, onFilled);
  46         new hydra::label(main, "quarnos> ", "cmd_prompt");
  47         new hydra::edit(main, "cmd");
  48 }
  49
  50 void shell::command(p<hydra::form> query) {
  51         string cmd = query.cast<hydra::form>()->get_element("cmd").cast<hydra::edit>()->get_value();
  52
  53         if (!strcmp(cmd,"exit"))
  54                 exit();
  55         else if (!strcmp(cmd,"info")) {
  56                 hydra::form *msg = new hydra::form(this);
  57                 new hydra::label(msg, "Copyright (C) 2008-2009 Pawel Dziepak\n","copy");
  58         } else if (!strncmp(cmd, "cat ", 4)) {
  59                 string name(&((const char*)cmd)[4]);
  60                 hydra::io *fp = hydra::io::open_file(name);
  61                 hydra::form *msg = new hydra::form(this);
  62                 new hydra::label(msg, fp->readall(), "file");
  63         } else if (!strcmp(cmd, "ls")) {
  64                 hydra::io *dir = hydra::io::enter_dir("/");
  65                 hydra::form *msg = new hydra::form(this);
  66                 list<hydra::io*> ldir = dir->list_dir();
  67                 for (int i = 0; i < ldir.get_count(); i++)
  68                         new hydra::label(msg, ldir[i]->name() + "\n", "file");
  69         } else if (!strcmp(cmd, "help")) {
  70                 hydra::form *msg = new hydra::form(this);
  71                 new hydra::label(msg, "Command list:\n\tcat\t\tshows content of the file\n\tinfo\t\tshows copyright information\n\thelp\t\tshows list of commands\n\tls\t\tshows files in current directory\n\texit\t\thalts shell\n","help");
  72         } else {
  73                 hydra::form *msg = new hydra::form(this);
  74                 new hydra::label(msg, "No such command, type `help' for more information\n","nocmd");
  75         }
  76
  77         query->keep();
  78 }