reactos/rosapps/cmd/misc.c
Eric Kohl 8bbcdc3d4a Fixed current directory handling
Added new prompt functions
Fixed dangling pointer bug in copy command

svn path=/trunk/; revision=874
1999-12-15 00:50:41 +00:00

503 lines
9.1 KiB
C

/*
* MISC.C - misc. functions.
*
*
* History:
*
* 07/12/98 (Rob Lake)
* started
*
* 07/13/98 (Rob Lake)
* moved functions in here
*
* 27-Jul-1998 (John P Price <linux-guru@gcfl.net>)
* added config.h include
*
* 18-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
* Changed split() to accept quoted arguments.
* Removed parse_firstarg().
*
* 23-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
* Fixed an ugly bug in split(). In rare cases (last character
* of the string is a space) it ignored the NULL character and
* tried to add the following to the argument list.
*
* 28-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
* FileGetString() seems to be working now.
*
* 06-Nov-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
* Added PagePrompt() and FilePrompt().
*/
#include "config.h"
#include <windows.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
//#include <stdarg.h>
#include <stdio.h>
#include <tchar.h>
#include "cmd.h"
/*
* get a character out-of-band and honor Ctrl-Break characters
*/
TCHAR cgetchar (VOID)
{
HANDLE hInput = GetStdHandle (STD_INPUT_HANDLE);
INPUT_RECORD irBuffer;
DWORD dwRead;
do
{
ReadConsoleInput (hInput, &irBuffer, 1, &dwRead);
if ((irBuffer.EventType == KEY_EVENT) &&
(irBuffer.Event.KeyEvent.bKeyDown == TRUE))
{
if ((irBuffer.Event.KeyEvent.dwControlKeyState &
(LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED)) &
(irBuffer.Event.KeyEvent.wVirtualKeyCode == 'C'))
bCtrlBreak = TRUE;
break;
}
}
while (TRUE);
#ifndef _UNICODE
return irBuffer.Event.KeyEvent.uChar.AsciiChar;
#else
return irBuffer.Event.KeyEvent.uChar.UnicodeChar;
#endif /* _UNICODE */
}
/*
* Check if Ctrl-Break was pressed during the last calls
*/
BOOL CheckCtrlBreak (INT mode)
{
static BOOL bLeaveAll = FALSE; /* leave all batch files */
TCHAR c;
switch (mode)
{
case BREAK_OUTOFBATCH:
bLeaveAll = 0;
return FALSE;
case BREAK_BATCHFILE:
if (bLeaveAll)
return TRUE;
if (!bCtrlBreak)
return FALSE;
/* we need to be sure the string arrives on the screen! */
do
ConOutPuts (_T("\r\nCtrl-Break pressed. Cancel batch file? (Yes/No/All) "));
while (!_tcschr ("YNA\3", c = _totupper (cgetchar())) || !c);
ConOutPuts (_T("\r\n"));
if (c == _T('N'))
return bCtrlBreak = FALSE; /* ignore */
/* leave all batch files */
bLeaveAll = ((c == _T('A')) || (c == _T('\3')));
break;
case BREAK_INPUT:
if (!bCtrlBreak)
return FALSE;
break;
}
/* state processed */
bCtrlBreak = FALSE;
return TRUE;
}
/*
* split - splits a line up into separate arguments, deliminators
* are spaces and slashes ('/').
*/
LPTSTR *split (LPTSTR s, LPINT args)
{
LPTSTR *arg;
LPTSTR *p;
LPTSTR start;
LPTSTR q;
INT ac;
INT len;
BOOL bQuoted = FALSE;
arg = malloc (sizeof (LPTSTR));
if (!arg)
return NULL;
*arg = NULL;
ac = 0;
while (*s)
{
/* skip leading spaces */
while (*s && (_istspace (*s) || _istcntrl (*s)))
++s;
/* if quote (") then set bQuoted */
if (*s == _T('\"'))
{
++s;
bQuoted = TRUE;
}
start = s;
/* the first character can be '/' */
if (*s == _T('/'))
++s;
/* skip to next word delimiter or start of next option */
if (bQuoted)
{
while (_istprint (*s) && (*s != _T('\"')) && (*s != _T('/')))
++s;
}
else
{
while (_istprint (*s) && !_istspace (*s) && (*s != _T('/')))
++s;
}
/* a word was found */
if (s != start)
{
/* add new entry for new argument */
arg = realloc (p = arg, (ac + 2) * sizeof (LPTSTR));
if (!arg)
{
freep (p);
return NULL;
}
/* create new entry */
q = arg[ac] = malloc (((len = s - start) + 1) * sizeof (TCHAR));
arg[++ac] = NULL;
if (!q)
{
freep (arg);
return NULL;
}
memcpy (q, start, len * sizeof (TCHAR));
q[len] = _T('\0');
}
/* adjust string pointer if quoted (") */
if (bQuoted)
{
++s;
bQuoted = FALSE;
}
}
*args = ac;
return arg;
}
/*
* freep -- frees memory used for a call to split
*
*/
VOID freep (LPTSTR *p)
{
LPTSTR *q;
if (!p)
return;
q = p;
while (*q)
free(*q++);
free(p);
}
LPTSTR stpcpy (LPTSTR dest, LPTSTR src)
{
_tcscpy (dest, src);
return (dest + _tcslen (src));
}
/*
* Checks if a path is valid (accessible)
*/
BOOL IsValidPathName (LPCTSTR pszPath)
{
TCHAR szOldPath[MAX_PATH];
BOOL bResult;
GetCurrentDirectory (MAX_PATH, szOldPath);
bResult = SetCurrentDirectory (pszPath);
SetCurrentDirectory (szOldPath);
return bResult;
}
/*
* Checks if a file exists (accessible)
*/
BOOL IsValidFileName (LPCTSTR pszPath)
{
return (GetFileAttributes (pszPath) != 0xFFFFFFFF);
}
BOOL IsValidDirectory (LPCTSTR pszPath)
{
return (GetFileAttributes (pszPath) & FILE_ATTRIBUTE_DIRECTORY);
}
BOOL FileGetString (HANDLE hFile, LPTSTR lpBuffer, INT nBufferLength)
{
LPTSTR lpString;
TCHAR ch;
DWORD dwRead;
lpString = lpBuffer;
while ((--nBufferLength > 0) &&
ReadFile(hFile, &ch, 1, &dwRead, NULL) && dwRead)
{
if (ch == _T('\r'))
{
/* overread '\n' */
ReadFile (hFile, &ch, 1, &dwRead, NULL);
break;
}
*lpString++ = ch;
}
if (!dwRead && lpString == lpBuffer)
return FALSE;
*lpString++ = _T('\0');
return TRUE;
}
#ifndef __REACTOS__
/*
* GetConsoleWindow - returns the handle to the current console window
*/
HWND GetConsoleWindow (VOID)
{
TCHAR original[256];
TCHAR temp[256];
HWND h=0;
if(h)
return h;
GetConsoleTitle (original, sizeof(original));
_tcscpy (temp, original);
_tcscat (temp, _T("-xxx "));
if (FindWindow (0, temp) == NULL )
{
SetConsoleTitle (temp);
Sleep (0);
while(!(h = FindWindow (0, temp)))
;
SetConsoleTitle (original);
}
return h;
}
#endif
INT PagePrompt (VOID)
{
INPUT_RECORD ir;
ConOutPrintf ("Press a key to continue...\n");
RemoveBreakHandler ();
ConInDisable ();
do
{
ConInKey (&ir);
}
while ((ir.Event.KeyEvent.wVirtualKeyCode == VK_SHIFT) ||
(ir.Event.KeyEvent.wVirtualKeyCode == VK_MENU) ||
(ir.Event.KeyEvent.wVirtualKeyCode == VK_CONTROL));
AddBreakHandler ();
ConInEnable ();
if ((ir.Event.KeyEvent.wVirtualKeyCode == VK_ESCAPE) ||
((ir.Event.KeyEvent.wVirtualKeyCode == 'C') &&
(ir.Event.KeyEvent.dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED))))
return PROMPT_BREAK;
return PROMPT_YES;
}
INT FilePromptYN (LPTSTR szFormat, ...)
{
TCHAR szOut[512];
va_list arg_ptr;
// TCHAR cKey = 0;
// LPTSTR szKeys = _T("yna");
TCHAR szIn[10];
LPTSTR p;
va_start (arg_ptr, szFormat);
_vstprintf (szOut, szFormat, arg_ptr);
va_end (arg_ptr);
ConOutPrintf (szFormat);
/* preliminary fix */
ConInString (szIn, 10);
ConOutPrintf (_T("\n"));
_tcsupr (szIn);
for (p = szIn; _istspace (*p); p++)
;
if (*p == _T('Y'))
return PROMPT_YES;
else if (*p == _T('N'))
return PROMPT_NO;
#if 0
else if (*p == _T('\03'))
return PROMPT_BREAK;
#endif
return PROMPT_NO;
/* unfinished sollution */
#if 0
RemoveBreakHandler ();
ConInDisable ();
do
{
ConInKey (&ir);
cKey = _totlower (ir.Event.KeyEvent.uChar.AsciiChar);
if (_tcschr (szKeys, cKey[0]) == NULL)
cKey = 0;
}
while ((ir.Event.KeyEvent.wVirtualKeyCode == VK_SHIFT) ||
(ir.Event.KeyEvent.wVirtualKeyCode == VK_MENU) ||
(ir.Event.KeyEvent.wVirtualKeyCode == VK_CONTROL));
AddBreakHandler ();
ConInEnable ();
if ((ir.Event.KeyEvent.wVirtualKeyCode == VK_ESCAPE) ||
((ir.Event.KeyEvent.wVirtualKeyCode == 'C') &&
(ir.Event.KeyEvent.dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED))))
return PROMPT_BREAK;
return PROMPT_YES;
#endif
}
INT FilePromptYNA (LPTSTR szFormat, ...)
{
TCHAR szOut[512];
va_list arg_ptr;
// TCHAR cKey = 0;
// LPTSTR szKeys = _T("yna");
TCHAR szIn[10];
LPTSTR p;
va_start (arg_ptr, szFormat);
_vstprintf (szOut, szFormat, arg_ptr);
va_end (arg_ptr);
ConOutPrintf (szFormat);
/* preliminary fix */
ConInString (szIn, 10);
ConOutPrintf (_T("\n"));
_tcsupr (szIn);
for (p = szIn; _istspace (*p); p++)
;
if (*p == _T('Y'))
return PROMPT_YES;
else if (*p == _T('N'))
return PROMPT_NO;
if (*p == _T('A'))
return PROMPT_ALL;
#if 0
else if (*p == _T('\03'))
return PROMPT_BREAK;
#endif
return PROMPT_NO;
/* unfinished sollution */
#if 0
RemoveBreakHandler ();
ConInDisable ();
do
{
ConInKey (&ir);
cKey = _totlower (ir.Event.KeyEvent.uChar.AsciiChar);
if (_tcschr (szKeys, cKey[0]) == NULL)
cKey = 0;
}
while ((ir.Event.KeyEvent.wVirtualKeyCode == VK_SHIFT) ||
(ir.Event.KeyEvent.wVirtualKeyCode == VK_MENU) ||
(ir.Event.KeyEvent.wVirtualKeyCode == VK_CONTROL));
AddBreakHandler ();
ConInEnable ();
if ((ir.Event.KeyEvent.wVirtualKeyCode == VK_ESCAPE) ||
((ir.Event.KeyEvent.wVirtualKeyCode == 'C') &&
(ir.Event.KeyEvent.dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED))))
return PROMPT_BREAK;
return PROMPT_YES;
#endif
}
/* EOF */