mirror of
https://github.com/reactos/reactos.git
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3ade7829d0
* Only expand arguments actually containing wildcard characters (to prevent expanding directory names to all files within that directory) svn path=/trunk/; revision=4018
559 lines
10 KiB
C
559 lines
10 KiB
C
/*
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* MISC.C - misc. functions.
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*
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*
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* History:
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*
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* 07/12/98 (Rob Lake)
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* started
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*
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* 07/13/98 (Rob Lake)
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* moved functions in here
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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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* 18-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
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* Changed split() to accept quoted arguments.
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* Removed parse_firstarg().
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*
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* 23-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
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* Fixed an ugly bug in split(). In rare cases (last character
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* of the string is a space) it ignored the NULL character and
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* tried to add the following to the argument list.
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*
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* 28-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
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* FileGetString() seems to be working now.
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*
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* 06-Nov-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
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* Added PagePrompt() and FilePrompt().
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*/
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#include "config.h"
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#include <windows.h>
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#include <ctype.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <tchar.h>
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#include "cmd.h"
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/*
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* get a character out-of-band and honor Ctrl-Break characters
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*/
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TCHAR cgetchar (VOID)
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{
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HANDLE hInput = GetStdHandle (STD_INPUT_HANDLE);
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INPUT_RECORD irBuffer;
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DWORD dwRead;
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do
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{
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ReadConsoleInput (hInput, &irBuffer, 1, &dwRead);
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if ((irBuffer.EventType == KEY_EVENT) &&
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(irBuffer.Event.KeyEvent.bKeyDown == TRUE))
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{
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if ((irBuffer.Event.KeyEvent.dwControlKeyState &
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(LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED)) &
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(irBuffer.Event.KeyEvent.wVirtualKeyCode == 'C'))
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bCtrlBreak = TRUE;
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break;
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}
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}
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while (TRUE);
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#ifndef _UNICODE
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return irBuffer.Event.KeyEvent.uChar.AsciiChar;
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#else
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return irBuffer.Event.KeyEvent.uChar.UnicodeChar;
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#endif /* _UNICODE */
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}
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/*
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* Check if Ctrl-Break was pressed during the last calls
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*/
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BOOL CheckCtrlBreak (INT mode)
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{
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static BOOL bLeaveAll = FALSE; /* leave all batch files */
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TCHAR c;
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switch (mode)
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{
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case BREAK_OUTOFBATCH:
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bLeaveAll = 0;
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return FALSE;
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case BREAK_BATCHFILE:
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if (bLeaveAll)
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return TRUE;
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if (!bCtrlBreak)
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return FALSE;
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/* we need to be sure the string arrives on the screen! */
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do
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ConOutPuts (_T("\r\nCtrl-Break pressed. Cancel batch file? (Yes/No/All) "));
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while (!_tcschr ("YNA\3", c = _totupper (cgetchar())) || !c);
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ConOutPuts (_T("\r\n"));
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if (c == _T('N'))
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return bCtrlBreak = FALSE; /* ignore */
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/* leave all batch files */
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bLeaveAll = ((c == _T('A')) || (c == _T('\3')));
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break;
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case BREAK_INPUT:
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if (!bCtrlBreak)
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return FALSE;
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break;
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}
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/* state processed */
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bCtrlBreak = FALSE;
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return TRUE;
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}
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/* add new entry for new argument */
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static BOOL add_entry (LPINT ac, LPTSTR **arg, LPTSTR entry)
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{
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LPTSTR q;
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LPTSTR *oldarg;
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q = malloc ((_tcslen(entry) + 1) * sizeof (TCHAR));
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if (NULL == q)
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{
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return FALSE;
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}
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_tcscpy (q, entry);
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oldarg = *arg;
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*arg = realloc (oldarg, (*ac + 2) * sizeof (LPTSTR));
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if (NULL == *arg)
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{
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*arg = oldarg;
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return FALSE;
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}
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/* save new entry */
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(*arg)[*ac] = q;
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(*arg)[++(*ac)] = NULL;
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return TRUE;
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}
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static BOOL expand (LPINT ac, LPTSTR **arg, LPTSTR pattern)
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{
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HANDLE hFind;
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WIN32_FIND_DATA FindData;
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BOOL ok;
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hFind = FindFirstFile (pattern, &FindData);
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if (INVALID_HANDLE_VALUE != hFind)
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{
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do
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{
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ok = add_entry(ac, arg, FindData.cFileName);
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} while (FindNextFile (hFind, &FindData) && ok);
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FindClose (hFind);
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}
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else
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{
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ok = add_entry(ac, arg, pattern);
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}
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return ok;
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}
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/*
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* split - splits a line up into separate arguments, deliminators
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* are spaces and slashes ('/').
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*/
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LPTSTR *split (LPTSTR s, LPINT args, BOOL expand_wildcards)
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{
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LPTSTR *arg;
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LPTSTR start;
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LPTSTR q;
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INT ac;
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INT len;
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BOOL bQuoted = FALSE;
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arg = malloc (sizeof (LPTSTR));
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if (!arg)
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return NULL;
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*arg = NULL;
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ac = 0;
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while (*s)
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{
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/* skip leading spaces */
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while (*s && (_istspace (*s) || _istcntrl (*s)))
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++s;
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/* if quote (") then set bQuoted */
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if (*s == _T('\"'))
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{
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++s;
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bQuoted = TRUE;
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}
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start = s;
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/* the first character can be '/' */
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if (*s == _T('/'))
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++s;
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/* skip to next word delimiter or start of next option */
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if (bQuoted)
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{
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while (_istprint (*s) && (*s != _T('\"')) && (*s != _T('/')))
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++s;
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}
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else
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{
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while (_istprint (*s) && !_istspace (*s) && (*s != _T('/')))
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++s;
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}
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/* a word was found */
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if (s != start)
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{
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q = malloc (((len = s - start) + 1) * sizeof (TCHAR));
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if (!q)
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{
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return NULL;
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}
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memcpy (q, start, len * sizeof (TCHAR));
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q[len] = _T('\0');
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if (expand_wildcards && _T('/') != *start &&
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(NULL != _tcschr(q, _T('*')) || NULL != _tcschr(q, _T('?'))))
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{
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if (! expand(&ac, &arg, q))
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{
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free (q);
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freep (arg);
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return NULL;
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}
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}
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else
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{
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if (! add_entry(&ac, &arg, q))
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{
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free (q);
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freep (arg);
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return NULL;
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}
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}
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free (q);
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}
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/* adjust string pointer if quoted (") */
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if (bQuoted)
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{
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++s;
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bQuoted = FALSE;
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}
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}
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*args = ac;
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return arg;
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}
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/*
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* freep -- frees memory used for a call to split
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*
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*/
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VOID freep (LPTSTR *p)
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{
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LPTSTR *q;
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if (!p)
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return;
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q = p;
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while (*q)
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free(*q++);
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free(p);
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}
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LPTSTR stpcpy (LPTSTR dest, LPTSTR src)
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{
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_tcscpy (dest, src);
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return (dest + _tcslen (src));
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}
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/*
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* Checks if a path is valid (accessible)
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*/
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BOOL IsValidPathName (LPCTSTR pszPath)
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{
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TCHAR szOldPath[MAX_PATH];
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BOOL bResult;
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GetCurrentDirectory (MAX_PATH, szOldPath);
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bResult = SetCurrentDirectory (pszPath);
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SetCurrentDirectory (szOldPath);
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return bResult;
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}
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/*
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* Checks if a file exists (accessible)
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*/
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BOOL IsValidFileName (LPCTSTR pszPath)
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{
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return (GetFileAttributes (pszPath) != 0xFFFFFFFF);
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}
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BOOL IsValidDirectory (LPCTSTR pszPath)
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{
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return (GetFileAttributes (pszPath) & FILE_ATTRIBUTE_DIRECTORY);
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}
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BOOL FileGetString (HANDLE hFile, LPTSTR lpBuffer, INT nBufferLength)
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{
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LPTSTR lpString;
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TCHAR ch;
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DWORD dwRead;
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lpString = lpBuffer;
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while ((--nBufferLength > 0) &&
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ReadFile(hFile, &ch, 1, &dwRead, NULL) && dwRead)
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{
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if (ch == _T('\r'))
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{
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/* overread '\n' */
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ReadFile (hFile, &ch, 1, &dwRead, NULL);
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break;
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}
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*lpString++ = ch;
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}
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if (!dwRead && lpString == lpBuffer)
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return FALSE;
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*lpString++ = _T('\0');
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return TRUE;
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}
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#ifndef __REACTOS__
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/*
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* GetConsoleWindow - returns the handle to the current console window
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*/
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HWND GetConsoleWindow (VOID)
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{
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TCHAR original[256];
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TCHAR temp[256];
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HWND h=0;
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if(h)
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return h;
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GetConsoleTitle (original, sizeof(original));
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_tcscpy (temp, original);
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_tcscat (temp, _T("-xxx "));
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if (FindWindow (0, temp) == NULL )
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{
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SetConsoleTitle (temp);
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Sleep (0);
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while(!(h = FindWindow (0, temp)))
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;
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SetConsoleTitle (original);
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}
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return h;
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}
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#endif
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INT PagePrompt (VOID)
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{
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INPUT_RECORD ir;
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ConOutPrintf ("Press a key to continue...\n");
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RemoveBreakHandler ();
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ConInDisable ();
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do
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{
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ConInKey (&ir);
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}
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while ((ir.Event.KeyEvent.wVirtualKeyCode == VK_SHIFT) ||
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(ir.Event.KeyEvent.wVirtualKeyCode == VK_MENU) ||
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(ir.Event.KeyEvent.wVirtualKeyCode == VK_CONTROL));
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AddBreakHandler ();
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ConInEnable ();
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if ((ir.Event.KeyEvent.wVirtualKeyCode == VK_ESCAPE) ||
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((ir.Event.KeyEvent.wVirtualKeyCode == 'C') &&
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(ir.Event.KeyEvent.dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED))))
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return PROMPT_BREAK;
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return PROMPT_YES;
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}
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INT FilePromptYN (LPTSTR szFormat, ...)
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{
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TCHAR szOut[512];
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va_list arg_ptr;
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// TCHAR cKey = 0;
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// LPTSTR szKeys = _T("yna");
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TCHAR szIn[10];
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LPTSTR p;
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va_start (arg_ptr, szFormat);
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_vstprintf (szOut, szFormat, arg_ptr);
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va_end (arg_ptr);
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ConOutPrintf (szFormat);
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/* preliminary fix */
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ConInString (szIn, 10);
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ConOutPrintf (_T("\n"));
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_tcsupr (szIn);
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for (p = szIn; _istspace (*p); p++)
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;
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if (*p == _T('Y'))
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return PROMPT_YES;
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else if (*p == _T('N'))
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return PROMPT_NO;
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#if 0
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else if (*p == _T('\03'))
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return PROMPT_BREAK;
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#endif
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return PROMPT_NO;
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/* unfinished sollution */
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#if 0
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RemoveBreakHandler ();
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ConInDisable ();
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do
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{
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ConInKey (&ir);
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cKey = _totlower (ir.Event.KeyEvent.uChar.AsciiChar);
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if (_tcschr (szKeys, cKey[0]) == NULL)
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cKey = 0;
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}
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while ((ir.Event.KeyEvent.wVirtualKeyCode == VK_SHIFT) ||
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(ir.Event.KeyEvent.wVirtualKeyCode == VK_MENU) ||
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(ir.Event.KeyEvent.wVirtualKeyCode == VK_CONTROL));
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AddBreakHandler ();
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ConInEnable ();
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if ((ir.Event.KeyEvent.wVirtualKeyCode == VK_ESCAPE) ||
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((ir.Event.KeyEvent.wVirtualKeyCode == 'C') &&
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(ir.Event.KeyEvent.dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED))))
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return PROMPT_BREAK;
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return PROMPT_YES;
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#endif
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}
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INT FilePromptYNA (LPTSTR szFormat, ...)
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{
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TCHAR szOut[512];
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va_list arg_ptr;
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// TCHAR cKey = 0;
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// LPTSTR szKeys = _T("yna");
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TCHAR szIn[10];
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LPTSTR p;
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va_start (arg_ptr, szFormat);
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_vstprintf (szOut, szFormat, arg_ptr);
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va_end (arg_ptr);
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ConOutPrintf (szFormat);
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/* preliminary fix */
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ConInString (szIn, 10);
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ConOutPrintf (_T("\n"));
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_tcsupr (szIn);
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for (p = szIn; _istspace (*p); p++)
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;
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if (*p == _T('Y'))
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return PROMPT_YES;
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else if (*p == _T('N'))
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return PROMPT_NO;
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if (*p == _T('A'))
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return PROMPT_ALL;
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#if 0
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else if (*p == _T('\03'))
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return PROMPT_BREAK;
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#endif
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return PROMPT_NO;
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/* unfinished sollution */
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#if 0
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RemoveBreakHandler ();
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ConInDisable ();
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do
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{
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ConInKey (&ir);
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cKey = _totlower (ir.Event.KeyEvent.uChar.AsciiChar);
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if (_tcschr (szKeys, cKey[0]) == NULL)
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cKey = 0;
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}
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while ((ir.Event.KeyEvent.wVirtualKeyCode == VK_SHIFT) ||
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(ir.Event.KeyEvent.wVirtualKeyCode == VK_MENU) ||
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(ir.Event.KeyEvent.wVirtualKeyCode == VK_CONTROL));
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AddBreakHandler ();
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ConInEnable ();
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if ((ir.Event.KeyEvent.wVirtualKeyCode == VK_ESCAPE) ||
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((ir.Event.KeyEvent.wVirtualKeyCode == 'C') &&
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(ir.Event.KeyEvent.dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED))))
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return PROMPT_BREAK;
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return PROMPT_YES;
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#endif
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}
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/* EOF */
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