posix/apps/baresh/sh.c

   1 /* $Id: sh.c,v 1.1 2002/01/20 21:22:29 ea Exp $
   2  *
   3  * baresh - Bare Shell for the PSX subsystem.
   4  * Copyright (c) 2002 Emanuele Aliberti
   5  * License: GNU GPL v2
   6  */
   7 #include <stdio.h>
   8 #include <sys/types.h>
   9 #include <dirent.h>
  10
  11 #define INPUT_BUFFER_SIZE 128
  12
  13 int run=1;
  14
  15 void cmd_exit(char*buf)
  16 {
  17   run=0;
  18 }
  19
  20 void cmd_pwd(char * buf)
  21 {
  22   char pwd[1024];
  23
  24   getcwd(pwd,sizeof pwd);
  25   printf("%s\n",pwd);
  26 }
  27
  28 void cmd_ls(char*buf)
  29 {
  30   char pwd[1024];
  31   DIR * dir;
  32   struct dirent * entry;
  33
  34   getcwd(pwd,sizeof pwd);
  35   dir=opendir(pwd);
  36   while (NULL!=(entry=readdir(dir)))
  37   {
  38     printf("%s\n",entry->d_name);
  39   }
  40   closedir(dir);
  41 }
  42
  43 int main(int argc,char*argv[])
  44 {
  45   char buf[INPUT_BUFFER_SIZE];
  46
  47   while (run)
  48   {
  49     printf("# ");
  50     if (gets(buf))
  51     {
  52       if (!strcmp("exit",buf))    cmd_exit(buf);
  53       else if (!strcmp("pwd",buf)) cmd_pwd(buf);
  54       else if (!strcmp("ls",buf)) cmd_ls(buf);
  55       else printf("%s: unknown command\n",argv[0]);
  56     }
  57   }
  58   return 0;
  59 }
  60 /* EOF */