mirror of
https://github.com/reactos/reactos.git
synced 2024-07-05 12:15:46 +00:00
468 lines
9.8 KiB
C
468 lines
9.8 KiB
C
/*
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* INTERNAL.C - command.com internal commands.
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*
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*
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* History:
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*
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* 17/08/94 (Tim Norman)
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* started.
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*
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* 08/08/95 (Matt Rains)
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* i have cleaned up the source code. changes now bring this source into
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* guidelines for recommended programming practice.
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*
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* cd()
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* started.
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*
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* dir()
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* i have added support for file attributes to the DIR() function. the
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* routine adds "d" (directory) and "r" (read only) output. files with the
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* system attribute have the filename converted to lowercase. files with
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* the hidden attribute are not displayed.
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*
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* i have added support for directorys. now if the directory attribute is
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* detected the file size if replaced with the string "<dir>".
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*
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* ver()
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* started.
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*
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* md()
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* started.
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*
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* rd()
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* started.
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*
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* del()
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* started.
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*
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* does not support wildcard selection.
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*
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* todo: add delete directory support.
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* add recursive directory delete support.
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*
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* ren()
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* started.
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*
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* does not support wildcard selection.
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*
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* todo: add rename directory support.
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*
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* a general structure has been used for the cd, rd and md commands. this
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* will be better in the long run. it is too hard to maintain such diverse
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* functions when you are involved in a group project like this.
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*
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* 12/14/95 (Tim Norman)
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* fixed DIR so that it will stick \*.* if a directory is specified and
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* that it will stick on .* if a file with no extension is specified or
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* *.* if it ends in a \
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*
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* 1/6/96 (Tim Norman)
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* added an isatty call to DIR so it won't prompt for keypresses unless
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* stdin and stdout are the console.
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*
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* changed parameters to be mutually consistent to make calling the
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* functions easier
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*
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* rem()
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* started.
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*
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* doskey()
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* started.
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*
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* 01/22/96 (Oliver Mueller)
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* error messages are now handled by perror.
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*
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* 02/05/96 (Tim Norman)
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* converted all functions to accept first/rest parameters
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*
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* 07/26/96 (Tim Norman)
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* changed return values to int instead of void
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*
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* path() started.
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*
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* 12/23/96 (Aaron Kaufman)
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* rewrote dir() to mimic MS-DOS's dir
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*
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* 01/28/97 (Tim Norman)
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* cleaned up Aaron's DIR code
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*
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* 06/13/97 (Tim Norman)
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* moved DIR code to dir.c
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* re-implemented Aaron's DIR code
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*
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* 06/14/97 (Steffan Kaiser)
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* ctrl-break handling
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* bug fixes
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*
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* 27-Jul-1998 (John P Price <linux-guru@gcfl.net>)
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* added config.h include
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*
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* 03-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
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* Replaced DOS calls by Win32 calls.
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*
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* 08-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
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* Added help texts ("/?").
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*
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* 18-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
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* Added support for quoted arguments (cd "program files").
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*
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* 07-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
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* Clean up.
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*
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* 26-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
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* Replaced remaining CRT io functions by Win32 io functions.
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* Unicode safe!
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*
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* 30-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
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* Added "cd -" feature. Changes to the previous directory.
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*
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* 15-Mar-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
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* Fixed bug in "cd -" feature. If the previous directory was a root
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* directory, it was ignored.
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*
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* 23-Feb-2001 (Carl Nettelblad <cnettel@hem.passagen.se>)
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* Improved chdir/cd command.
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*/
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#include "config.h"
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#include <windows.h>
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#include <tchar.h>
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include "cmd.h"
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#ifdef INCLUDE_CMD_CHDIR
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static LPTSTR lpLastPath;
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VOID InitLastPath (VOID)
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{
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lpLastPath = NULL;
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}
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VOID FreeLastPath (VOID)
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{
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if (lpLastPath)
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free (lpLastPath);
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}
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/*
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* CD / CHDIR
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*
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*/
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INT cmd_chdir (LPTSTR cmd, LPTSTR param)
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{
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LPTSTR dir; /* pointer to the directory to change to */
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LPTSTR lpOldPath;
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LPTSTR endofstring; /* pointer to the null character in the directory to change to */
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LPTSTR lastquote; /* pointer to the last quotation mark in the directory to change to */
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/*Should we better declare a variable containing _tsclen(dir) ? It's used a few times,
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but on the other hand paths are generally not very long*/
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if (!_tcsncmp (param, _T("/?"), 2))
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{
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ConOutPuts (_T("Changes the current directory or displays it's name\n\n"
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"CHDIR [drive:][path]\n"
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"CHDIR[..|-]\n"
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"CD [drive:][path]\n"
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"CD[..|-]\n\n"
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" .. parent directory\n"
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" - previous directory\n\n"
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"Type CD drive: to display the current directory on the specified drive.\n"
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"Type CD without a parameter to display the current drive and directory."));
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return 0;
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}
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/* The whole param string is our parameter these days. The only thing we do is eliminating every quotation mark */
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/* Is it safe to change the characters param is pointing to? I presume it is, as there doesn't seem to be any
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post-processing of it after the function call (what would that accomplish?) */
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dir=param;
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endofstring=dir+_tcslen(dir);
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while ((lastquote = _tcsrchr(dir,'\"')))
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{
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endofstring--;
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memmove(lastquote,lastquote+1,endofstring-lastquote);
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*endofstring=_T('\0');
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}
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/* if doing a CD and no parameters given, print out current directory */
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if (!dir || !dir[0])
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{
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TCHAR szPath[MAX_PATH];
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GetCurrentDirectory (MAX_PATH, szPath);
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ConOutPuts (szPath);
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return 0;
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}
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if (dir && _tcslen (dir) == 1 && *dir == _T('-'))
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{
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if (lpLastPath)
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dir = lpLastPath;
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else
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return 0;
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}
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else if (dir && _tcslen (dir)==2 && dir[1] == _T(':'))
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{
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TCHAR szRoot[3] = _T("A:");
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TCHAR szPath[MAX_PATH];
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szRoot[0] = _totupper (dir[0]);
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GetFullPathName (szRoot, MAX_PATH, szPath, NULL);
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/* PathRemoveBackslash */
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if (_tcslen (szPath) > 3)
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{
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LPTSTR p = _tcsrchr (szPath, _T('\\'));
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*p = _T('\0');
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}
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ConOutPuts (szPath);
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return 0;
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}
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/* remove trailing \ if any, but ONLY if dir is not the root dir */
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if (_tcslen (dir) > 3 && dir[_tcslen (dir) - 1] == _T('\\'))
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dir[_tcslen(dir) - 1] = _T('\0');
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/* store current directory */
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lpOldPath = (LPTSTR)malloc (MAX_PATH * sizeof(TCHAR));
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GetCurrentDirectory (MAX_PATH, lpOldPath);
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if (!SetCurrentDirectory (dir))
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{
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ErrorMessage (GetLastError(), _T("CD"));
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/* throw away current directory */
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free (lpOldPath);
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lpOldPath = NULL;
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return 1;
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}
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else
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{
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GetCurrentDirectory(MAX_PATH, dir);
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if (dir[0]!=lpOldPath[0])
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{
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SetCurrentDirectory(lpOldPath);
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free(lpOldPath);
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}
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else
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{
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if (lpLastPath)
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free (lpLastPath);
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lpLastPath = lpOldPath;
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}
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}
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return 0;
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}
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#endif
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#ifdef INCLUDE_CMD_MKDIR
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/*
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* MD / MKDIR
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*
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*/
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INT cmd_mkdir (LPTSTR cmd, LPTSTR param)
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{
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LPTSTR dir; /* pointer to the directory to change to */
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LPTSTR place; /* used to search for the \ when no space is used */
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LPTSTR *p = NULL;
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INT argc;
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if (!_tcsncmp (param, _T("/?"), 2))
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{
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ConOutPuts (_T("Creates a directory.\n\n"
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"MKDIR [drive:]path\nMD [drive:]path"));
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return 0;
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}
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/* check if there is no space between the command and the path */
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if (param[0] == _T('\0'))
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{
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/* search for the \ or . so that both short & long names will work */
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for (place = cmd; *place; place++)
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if (*place == _T('.') || *place == _T('\\'))
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break;
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if (*place)
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dir = place;
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else
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/* signal that there are no parameters */
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dir = NULL;
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}
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else
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{
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p = split (param, &argc);
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if (argc > 1)
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{
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/*JPP 20-Jul-1998 use standard error message */
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error_too_many_parameters (param);
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freep (p);
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return 1;
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}
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else
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dir = p[0];
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}
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if (!dir)
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{
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ConErrPrintf (_T("Required parameter missing\n"));
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return 1;
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}
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/* remove trailing \ if any, but ONLY if dir is not the root dir */
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if (_tcslen (dir) >= 2 && dir[_tcslen (dir) - 1] == _T('\\'))
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dir[_tcslen(dir) - 1] = _T('\0');
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if (!CreateDirectory (dir, NULL))
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{
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ErrorMessage (GetLastError(), _T("MD"));
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freep (p);
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return 1;
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}
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freep (p);
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return 0;
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}
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#endif
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#ifdef INCLUDE_CMD_RMDIR
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/*
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* RD / RMDIR
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*
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*/
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INT cmd_rmdir (LPTSTR cmd, LPTSTR param)
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{
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LPTSTR dir; /* pointer to the directory to change to */
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LPTSTR place; /* used to search for the \ when no space is used */
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LPTSTR *p = NULL;
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INT argc;
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if (!_tcsncmp (param, _T("/?"), 2))
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{
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ConOutPuts (_T("Removes a directory.\n\n"
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"RMDIR [drive:]path\nRD [drive:]path"));
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return 0;
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}
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/* check if there is no space between the command and the path */
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if (param[0] == _T('\0'))
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{
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/* search for the \ or . so that both short & long names will work */
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for (place = cmd; *place; place++)
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if (*place == _T('.') || *place == _T('\\'))
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break;
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if (*place)
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dir = place;
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else
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/* signal that there are no parameters */
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dir = NULL;
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}
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else
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{
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p = split (param, &argc);
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if (argc > 1)
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{
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/*JPP 20-Jul-1998 use standard error message */
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error_too_many_parameters (param);
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freep (p);
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return 1;
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}
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else
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dir = p[0];
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}
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if (!dir)
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{
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ConErrPrintf (_T("Required parameter missing\n"));
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return 1;
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}
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/* remove trailing \ if any, but ONLY if dir is not the root dir */
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if (_tcslen (dir) >= 2 && dir[_tcslen (dir) - 1] == _T('\\'))
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dir[_tcslen(dir) - 1] = _T('\0');
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if (!RemoveDirectory (dir))
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{
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ErrorMessage (GetLastError(), _T("RD"));
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freep (p);
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return 1;
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}
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freep (p);
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return 0;
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}
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#endif
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/*
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* set the exitflag to true
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*
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*/
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INT CommandExit (LPTSTR cmd, LPTSTR param)
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{
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if (!_tcsncmp (param, _T("/?"), 2))
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{
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ConOutPuts (_T("Exits the command line interpreter.\n\nEXIT"));
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return 0;
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}
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bExit = TRUE;
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return 0;
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}
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#ifdef INCLUDE_CMD_REM
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/*
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* does nothing
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*
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*/
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INT CommandRem (LPTSTR cmd, LPTSTR param)
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{
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if (!_tcsncmp (param, _T("/?"), 2))
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{
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ConOutPuts (_T("Starts a comment line in a batch file.\n\n"
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"REM [Comment]"));
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}
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return 0;
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}
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#endif /* INCLUDE_CMD_REM */
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INT CommandShowCommands (LPTSTR cmd, LPTSTR param)
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{
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PrintCommandList ();
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return 0;
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}
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/* EOF */ |