reactos/rosapps/cmd/internal.c

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/*
* INTERNAL.C - command.com internal commands.
*
*
* History:
*
* 17/08/94 (Tim Norman)
* started.
*
* 08/08/95 (Matt Rains)
* i have cleaned up the source code. changes now bring this source into
* guidelines for recommended programming practice.
*
* cd()
* started.
*
* dir()
* i have added support for file attributes to the DIR() function. the
* routine adds "d" (directory) and "r" (read only) output. files with the
* system attribute have the filename converted to lowercase. files with
* the hidden attribute are not displayed.
*
* i have added support for directorys. now if the directory attribute is
* detected the file size if replaced with the string "<dir>".
*
* ver()
* started.
*
* md()
* started.
*
* rd()
* started.
*
* del()
* started.
*
* does not support wildcard selection.
*
* todo: add delete directory support.
* add recursive directory delete support.
*
* ren()
* started.
*
* does not support wildcard selection.
*
* todo: add rename directory support.
*
* a general structure has been used for the cd, rd and md commands. this
* will be better in the long run. it is too hard to maintain such diverse
* functions when you are involved in a group project like this.
*
* 12/14/95 (Tim Norman)
* fixed DIR so that it will stick \*.* if a directory is specified and
* that it will stick on .* if a file with no extension is specified or
* *.* if it ends in a \
*
* 1/6/96 (Tim Norman)
* added an isatty call to DIR so it won't prompt for keypresses unless
* stdin and stdout are the console.
*
* changed parameters to be mutually consistent to make calling the
* functions easier
*
* rem()
* started.
*
* doskey()
* started.
*
* 01/22/96 (Oliver Mueller)
* error messages are now handled by perror.
*
* 02/05/96 (Tim Norman)
* converted all functions to accept first/rest parameters
*
* 07/26/96 (Tim Norman)
* changed return values to int instead of void
*
* path() started.
*
* 12/23/96 (Aaron Kaufman)
* rewrote dir() to mimic MS-DOS's dir
*
* 01/28/97 (Tim Norman)
* cleaned up Aaron's DIR code
*
* 06/13/97 (Tim Norman)
* moved DIR code to dir.c
* re-implemented Aaron's DIR code
*
* 06/14/97 (Steffan Kaiser)
* ctrl-break handling
* bug fixes
*
* 27-Jul-1998 (John P Price <linux-guru@gcfl.net>)
* added config.h include
*
* 03-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
* Replaced DOS calls by Win32 calls.
*
* 08-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
* Added help texts ("/?").
*
* 18-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
* Added support for quoted arguments (cd "program files").
*
* 07-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
* Clean up.
*
* 26-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
* Replaced remaining CRT io functions by Win32 io functions.
* Unicode safe!
*
* 30-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
* Added "cd -" feature. Changes to the previous directory.
*
* 15-Mar-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
* Fixed bug in "cd -" feature. If the previous directory was a root
* directory, it was ignored.
*
* 23-Feb-2001 (Carl Nettelblad <cnettel@hem.passagen.se>)
* Improved chdir/cd command.
*/
#include "config.h"
#include <windows.h>
#include <tchar.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include "cmd.h"
#ifdef INCLUDE_CMD_CHDIR
static LPTSTR lpLastPath;
VOID InitLastPath (VOID)
{
lpLastPath = NULL;
}
VOID FreeLastPath (VOID)
{
if (lpLastPath)
free (lpLastPath);
}
/*
* CD / CHDIR
*
*/
INT cmd_chdir (LPTSTR cmd, LPTSTR param)
{
LPTSTR dir; /* pointer to the directory to change to */
LPTSTR lpOldPath;
LPTSTR endofstring; /* pointer to the null character in the directory to change to */
LPTSTR lastquote; /* pointer to the last quotation mark in the directory to change to */
/*Should we better declare a variable containing _tsclen(dir) ? It's used a few times,
but on the other hand paths are generally not very long*/
if (!_tcsncmp (param, _T("/?"), 2))
{
ConOutPuts (_T("Changes the current directory or displays it's name\n\n"
"CHDIR [drive:][path]\n"
"CHDIR[..|-]\n"
"CD [drive:][path]\n"
"CD[..|-]\n\n"
" .. parent directory\n"
" - previous directory\n\n"
"Type CD drive: to display the current directory on the specified drive.\n"
"Type CD without a parameter to display the current drive and directory."));
return 0;
}
/* The whole param string is our parameter these days. The only thing we do is eliminating every quotation mark */
/* Is it safe to change the characters param is pointing to? I presume it is, as there doesn't seem to be any
post-processing of it after the function call (what would that accomplish?) */
dir=param;
endofstring=dir+_tcslen(dir);
while ((lastquote = _tcsrchr(dir,'\"')))
{
endofstring--;
memmove(lastquote,lastquote+1,endofstring-lastquote);
*endofstring=_T('\0');
}
/* if doing a CD and no parameters given, print out current directory */
if (!dir || !dir[0])
{
TCHAR szPath[MAX_PATH];
GetCurrentDirectory (MAX_PATH, szPath);
ConOutPuts (szPath);
return 0;
}
if (dir && _tcslen (dir) == 1 && *dir == _T('-'))
{
if (lpLastPath)
dir = lpLastPath;
else
return 0;
}
else if (dir && _tcslen (dir)==2 && dir[1] == _T(':'))
{
TCHAR szRoot[3] = _T("A:");
TCHAR szPath[MAX_PATH];
szRoot[0] = _totupper (dir[0]);
GetFullPathName (szRoot, MAX_PATH, szPath, NULL);
/* PathRemoveBackslash */
if (_tcslen (szPath) > 3)
{
LPTSTR p = _tcsrchr (szPath, _T('\\'));
*p = _T('\0');
}
ConOutPuts (szPath);
return 0;
}
/* remove trailing \ if any, but ONLY if dir is not the root dir */
if (_tcslen (dir) > 3 && dir[_tcslen (dir) - 1] == _T('\\'))
dir[_tcslen(dir) - 1] = _T('\0');
/* store current directory */
lpOldPath = (LPTSTR)malloc (MAX_PATH * sizeof(TCHAR));
GetCurrentDirectory (MAX_PATH, lpOldPath);
if (!SetCurrentDirectory (dir))
{
ErrorMessage (GetLastError(), _T("CD"));
/* throw away current directory */
free (lpOldPath);
lpOldPath = NULL;
return 1;
}
else
{
GetCurrentDirectory(MAX_PATH, dir);
if (dir[0]!=lpOldPath[0])
{
SetCurrentDirectory(lpOldPath);
free(lpOldPath);
}
else
{
if (lpLastPath)
free (lpLastPath);
lpLastPath = lpOldPath;
}
}
return 0;
}
#endif
#ifdef INCLUDE_CMD_MKDIR
/*
* MD / MKDIR
*
*/
INT cmd_mkdir (LPTSTR cmd, LPTSTR param)
{
LPTSTR dir; /* pointer to the directory to change to */
LPTSTR place; /* used to search for the \ when no space is used */
LPTSTR *p = NULL;
INT argc;
if (!_tcsncmp (param, _T("/?"), 2))
{
ConOutPuts (_T("Creates a directory.\n\n"
"MKDIR [drive:]path\nMD [drive:]path"));
return 0;
}
/* check if there is no space between the command and the path */
if (param[0] == _T('\0'))
{
/* search for the \ or . so that both short & long names will work */
for (place = cmd; *place; place++)
if (*place == _T('.') || *place == _T('\\'))
break;
if (*place)
dir = place;
else
/* signal that there are no parameters */
dir = NULL;
}
else
{
p = split (param, &argc);
if (argc > 1)
{
/*JPP 20-Jul-1998 use standard error message */
error_too_many_parameters (param);
freep (p);
return 1;
}
else
dir = p[0];
}
if (!dir)
{
ConErrPrintf (_T("Required parameter missing\n"));
return 1;
}
/* remove trailing \ if any, but ONLY if dir is not the root dir */
if (_tcslen (dir) >= 2 && dir[_tcslen (dir) - 1] == _T('\\'))
dir[_tcslen(dir) - 1] = _T('\0');
if (!CreateDirectory (dir, NULL))
{
ErrorMessage (GetLastError(), _T("MD"));
freep (p);
return 1;
}
freep (p);
return 0;
}
#endif
#ifdef INCLUDE_CMD_RMDIR
/*
* RD / RMDIR
*
*/
INT cmd_rmdir (LPTSTR cmd, LPTSTR param)
{
LPTSTR dir; /* pointer to the directory to change to */
LPTSTR place; /* used to search for the \ when no space is used */
LPTSTR *p = NULL;
INT argc;
if (!_tcsncmp (param, _T("/?"), 2))
{
ConOutPuts (_T("Removes a directory.\n\n"
"RMDIR [drive:]path\nRD [drive:]path"));
return 0;
}
/* check if there is no space between the command and the path */
if (param[0] == _T('\0'))
{
/* search for the \ or . so that both short & long names will work */
for (place = cmd; *place; place++)
if (*place == _T('.') || *place == _T('\\'))
break;
if (*place)
dir = place;
else
/* signal that there are no parameters */
dir = NULL;
}
else
{
p = split (param, &argc);
if (argc > 1)
{
/*JPP 20-Jul-1998 use standard error message */
error_too_many_parameters (param);
freep (p);
return 1;
}
else
dir = p[0];
}
if (!dir)
{
ConErrPrintf (_T("Required parameter missing\n"));
return 1;
}
/* remove trailing \ if any, but ONLY if dir is not the root dir */
if (_tcslen (dir) >= 2 && dir[_tcslen (dir) - 1] == _T('\\'))
dir[_tcslen(dir) - 1] = _T('\0');
if (!RemoveDirectory (dir))
{
ErrorMessage (GetLastError(), _T("RD"));
freep (p);
return 1;
}
freep (p);
return 0;
}
#endif
/*
* set the exitflag to true
*
*/
INT CommandExit (LPTSTR cmd, LPTSTR param)
{
if (!_tcsncmp (param, _T("/?"), 2))
{
ConOutPuts (_T("Exits the command line interpreter.\n\nEXIT"));
return 0;
}
bExit = TRUE;
return 0;
}
#ifdef INCLUDE_CMD_REM
/*
* does nothing
*
*/
INT CommandRem (LPTSTR cmd, LPTSTR param)
{
if (!_tcsncmp (param, _T("/?"), 2))
{
ConOutPuts (_T("Starts a comment line in a batch file.\n\n"
"REM [Comment]"));
}
return 0;
}
#endif /* INCLUDE_CMD_REM */
INT CommandShowCommands (LPTSTR cmd, LPTSTR param)
{
PrintCommandList ();
return 0;
}
/* EOF */