workbench/c/shellcommands/NewShell.c

   1 /*
   2     Copyright © 1995-2012, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: NewShell CLI Command
   6     Lang: English
   7 */
   8
   9 /******************************************************************************
  10
  11
  12     NAME
  13
  14         NewShell
  15
  16     SYNOPSIS
  17
  18         WINDOW,FROM
  19
  20     LOCATION
  21
  22         C:
  23
  24     FUNCTION
  25
  26         Create a new shell in a new console window. This window will become
  27         the active one. The new shell inherits most attributes of the parent
  28         shell like the current directory, stack size, prompt and so on.
  29         However, it is completely independent of the parent shell.
  30             The window belonging to the new shell may be specified by
  31         using the WINDOW keyword.
  32
  33     INPUTS
  34
  35         WINDOW  --  Specification of the shell window
  36
  37                     X         --  number of pixels from the left edge of
  38                                   the screen
  39                     Y         --  number of pixels from the top edge of
  40                                   the screen
  41                     WIDTH     --  width of the shell window in pixels
  42                     HEIGHT    --  height of the shell window in pixels
  43                     TITLE     --  text to appear in the shell window's
  44                                   title bar
  45                     AUTO      --  the window automatically appears when the
  46                                   program needs input or output
  47                     ALT       --  the window appears in the specified size
  48                                   and position when the zoom gadget is clicked
  49                     BACKDROP  --  the window is a backdrop window
  50                     CLOSE     --  include a close gadget
  51                     INACTIVE  --  the window is not made active when opened
  52                     NOBORDER  --  the window is borderless, only the size,
  53                                   depth and zoom gadgets are available
  54                     NOCLOSE   --  the window has no close gadget
  55                     NODEPTH   --  the window has no depth gadget
  56                     NODRAG    --  the window cannot be drag; implies NOCLOSE
  57                     NOSIZE    --  the window has no size gadget
  58                     SCREEN    --  name of a public screen to open the window on
  59                     SIMPLE    --  if the window is enlarged the text expands to
  60                                   fill the available space
  61                     SMART     --  if the window is enlarged the text will not
  62                                   expand
  63                     WAIT      --  the window can only be closed by selecting
  64                                   the close gadget or entering CTRL-\.
  65
  66
  67         FROM    --  File to execute before resorting to normal shell
  68                     operations. If nothing is specified S:Shell-Startup
  69                     is used.
  70
  71     RESULT
  72
  73     NOTES
  74
  75     EXAMPLE
  76
  77         NewShell "CON:10/10/640/480/My own shell/CLOSE"
  78
  79     BUGS
  80
  81     SEE ALSO
  82
  83     INTERNALS
  84
  85     HISTORY
  86
  87 ******************************************************************************/
  88
  89 #include <exec/memory.h>
  90 #include <proto/exec.h>
  91 #include <proto/dos.h>
  92 #include <dos/dosextens.h>
  93 #include <dos/dostags.h>
  94 #include <aros/asmcall.h>
  95 #include <string.h>
  96
  97 #include <aros/shcommands.h>
  98
  99 AROS_SH3(NewShell, 41.2,
 100 AROS_SHA(STRPTR, ,WINDOW, ,"CON:10/50/640/480/AROS-Shell/CLOSE"),
 101 AROS_SHA(STRPTR, ,FROM,   ,"S:Shell-Startup"),
 102 AROS_SHA(LONG *, ,STACK,/N,NULL))
 103 {
 104     AROS_SHCOMMAND_INIT
 105
 106     BPTR from = Open(SHArg(FROM),   MODE_OLDFILE);
 107     BPTR win  = Open(SHArg(WINDOW), MODE_OLDFILE);
 108     LONG *stackp = SHArg(STACK);
 109     ULONG stack;
 110
 111     LONG rc = RETURN_FAIL;
 112
 113     if (stackp == NULL || *stackp < AROS_STACKSIZE)
 114         stack = AROS_STACKSIZE;
 115     else
 116         stack = *stackp;
 117
 118     if (win)
 119     {
 120         struct TagItem tags[] =
 121         {
 122             { SYS_Asynch,      TRUE       },
 123             { SYS_Background,  FALSE      },
 124             { SYS_Input,       (IPTR)win  },
 125             { SYS_Output,      (IPTR)NULL },
 126             { SYS_Error,       (IPTR)NULL },
 127             { SYS_ScriptInput, (IPTR)from },
 128             { SYS_UserShell,   TRUE       },
 129             { NP_StackSize,    stack      },
 130             { TAG_DONE,        0          }
 131         };
 132
 133         rc = SystemTagList("", tags);
 134         if (rc != -1)
 135         {
 136             win  = BNULL;
 137             from = BNULL;
 138         }
 139         else
 140             rc = RETURN_FAIL;
 141     }
 142     else
 143     {
 144         PrintFault(IoErr(), "NewShell");
 145     }
 146
 147     Close(win);
 148     Close(from);
 149
 150     return rc;
 151
 152     AROS_SHCOMMAND_EXIT
 153 }