76c28d80e2154ab24f7ef403b72a15dc3cd4ec6c
2 * CMDINPUT.C - handles command input (tab completion, history, etc.).
7 * 01/14/95 (Tim Norman)
10 * 08/08/95 (Matt Rains)
11 * i have cleaned up the source code. changes now bring this source
12 * into guidelines for recommended programming practice.
13 * i have added some constants to help making changes easier.
15 * 12/12/95 (Tim Norman)
16 * added findxy() function to get max x/y coordinates to display
17 * correctly on larger screens
19 * 12/14/95 (Tim Norman)
20 * fixed the Tab completion code that Matt Rains broke by moving local
21 * variables to a more global scope and forgetting to initialize them
25 * fixed a bug in tab completion that caused filenames at the beginning
26 * of the command-line to have their first letter truncated
29 * fixed a silly bug using printf instead of fputs, where typing "%i"
32 * 6/14/97 (Steffan Kaiser)
35 * 6/7/97 (Marc Desrochers)
36 * recoded everything! now properly adjusts when text font is changed.
37 * removed findxy(), reposition(), and reprint(), as these functions
38 * were inefficient. added goxy() function as gotoxy() was buggy when
39 * the screen font was changed. the printf() problem with %i on the
40 * command line was fixed by doing printf("%s",str) instead of
41 * printf(str). Don't ask how I find em just be glad I do :)
43 * 7/12/97 (Tim Norman)
44 * Note: above changes pre-empted Steffan's ctrl-break checking.
46 * 7/7/97 (Marc Desrochers)
47 * rewrote a new findxy() because the new dir() used it. This
48 * findxy() simply returns the values of *maxx *maxy. In the
49 * future, please use the pointers, they will always be correct
50 * since they point to BIOS values.
52 * 7/8/97 (Marc Desrochers)
53 * once again removed findxy(), moved the *maxx, *maxy pointers
54 * global and included them as externs in command.h. Also added
55 * insert/overstrike capability
57 * 7/13/97 (Tim Norman)
58 * added different cursor appearance for insert/overstrike mode
60 * 7/13/97 (Tim Norman)
61 * changed my code to use _setcursortype until I can figure out why
62 * my code is crashing on some machines. It doesn't crash on mine :)
64 * 27-Jul-1998 (John P Price <linux-guru@gcfl.net>)
65 * added config.h include
67 * 28-Jul-1998 (John P Price <linux-guru@gcfl.net>)
68 * put ifdef's around filename completion code.
70 * 30-Jul-1998 (John P Price <linux-guru@gcfl.net>)
71 * moved filename completion code to filecomp.c
72 * made second TAB display list of filename matches
74 * 31-Jul-1998 (John P Price <linux-guru@gcfl.net>)
75 * Fixed bug where if you typed something, then hit HOME, then tried
76 * to type something else in insert mode, it crashed.
78 * 07-Aug-1998 (John P Price <linux-guru@gcfl.net>)
79 * Fixed carrage return output to better match MSDOS with echo
80 * on or off.(marked with "JPP 19980708")
82 * 13-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
83 * Added insert/overwrite cursor.
85 * 25-Jan-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
86 * Replaced CRT io functions by Win32 console io functions.
87 * This can handle <Shift>-<Tab> for 4NT filename completion.
88 * Unicode and redirection safe!
90 * 04-Feb-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
91 * Fixed input bug. A "line feed" character remained in the keyboard
92 * input queue when you pressed <RETURN>. This sometimes caused
93 * some very strange effects.
94 * Fixed some command line editing annoyances.
96 * 30-Apr-2004 (Filip Navara <xnavara@volny.cz>)
97 * Fixed problems when the screen was scrolled away.
101 #include "resource.h"
108 * global command line insert/overwrite flag
110 static BOOL bInsert
= TRUE
;
114 ClearCommandLine (LPTSTR str
, INT maxlen
, SHORT orgx
, SHORT orgy
)
118 SetCursorXY (orgx
, orgy
);
119 for (count
= 0; count
< (INT
)_tcslen (str
); count
++)
120 ConOutChar (_T(' '));
121 _tcsnset (str
, _T('\0'), maxlen
);
122 SetCursorXY (orgx
, orgy
);
126 /* read in a command line */
127 VOID
ReadCommand (LPTSTR str
, INT maxlen
)
129 SHORT orgx
; /* origin x/y */
131 SHORT curx
; /*current x/y cursor position*/
134 INT count
; /*used in some for loops*/
135 INT current
= 0; /*the position of the cursor in the string (str)*/
136 INT charcount
= 0;/*chars in the string (str)*/
140 BOOL bContinue
=FALSE
;/*is TRUE the second case will not be executed*/
141 BOOL bReturn
= FALSE
;
142 TCHAR szPath
[MAX_PATH
];
144 /* get screen size */
145 GetScreenSize (&maxx
, &maxy
);
147 /* JPP 19980807 - if echo off, don't print prompt */
151 GetCursorXY (&orgx
, &orgy
);
152 GetCursorXY (&curx
, &cury
);
154 memset (str
, 0, maxlen
* sizeof (TCHAR
));
156 SetCursorType (bInsert
, TRUE
);
165 if (ir
.Event
.KeyEvent
.dwControlKeyState
&
166 (RIGHT_ALT_PRESSED
|RIGHT_ALT_PRESSED
|
167 RIGHT_CTRL_PRESSED
|LEFT_CTRL_PRESSED
) )
170 switch (ir
.Event
.KeyEvent
.wVirtualKeyCode
)
173 #ifdef FEATURE_HISTORY
176 /*add the current command line to the history*/
177 if (ir
.Event
.KeyEvent
.dwControlKeyState
&
178 (LEFT_CTRL_PRESSED
|RIGHT_CTRL_PRESSED
))
184 ClearCommandLine (str
, maxlen
, orgx
, orgy
);
185 current
= charcount
= 0;
193 /*delete current history entry*/
194 if (ir
.Event
.KeyEvent
.dwControlKeyState
&
195 (LEFT_CTRL_PRESSED
|RIGHT_CTRL_PRESSED
))
197 ClearCommandLine (str
, maxlen
, orgx
, orgy
);
198 History_del_current_entry(str
);
199 current
= charcount
= _tcslen (str
);
200 ConOutPrintf (_T("%s"), str
);
201 GetCursorXY (&curx
, &cury
);
206 #endif/*FEATURE_HISTORY*/
219 switch (ir
.Event
.KeyEvent
.wVirtualKeyCode
)
222 /* <BACKSPACE> - delete character to left of cursor */
223 if (current
> 0 && charcount
> 0)
225 if (current
== charcount
)
227 /* if at end of line */
228 str
[current
- 1] = _T('\0');
229 if (GetCursorX () != 0)
231 ConOutPrintf (_T("\b \b"));
236 SetCursorXY ((SHORT
)(maxx
- 1), (SHORT
)(GetCursorY () - 1));
237 ConOutChar (_T(' '));
238 SetCursorXY ((SHORT
)(maxx
- 1), (SHORT
)(GetCursorY () - 1));
245 for (count
= current
- 1; count
< charcount
; count
++)
246 str
[count
] = str
[count
+ 1];
247 if (GetCursorX () != 0)
249 SetCursorXY ((SHORT
)(GetCursorX () - 1), GetCursorY ());
254 SetCursorXY ((SHORT
)(maxx
- 1), (SHORT
)(GetCursorY () - 1));
258 GetCursorXY (&curx
, &cury
);
259 ConOutPrintf (_T("%s "), &str
[current
- 1]);
260 SetCursorXY (curx
, cury
);
268 /* toggle insert/overstrike mode */
270 SetCursorType (bInsert
, TRUE
);
274 /* delete character under cursor */
275 if (current
!= charcount
&& charcount
> 0)
277 for (count
= current
; count
< charcount
; count
++)
278 str
[count
] = str
[count
+ 1];
280 GetCursorXY (&curx
, &cury
);
281 ConOutPrintf (_T("%s "), &str
[current
]);
282 SetCursorXY (curx
, cury
);
287 /* goto beginning of string */
290 SetCursorXY (orgx
, orgy
);
298 /* goto end of string */
299 if (current
!= charcount
)
301 SetCursorXY (orgx
, orgy
);
302 ConOutPrintf (_T("%s"), str
);
303 GetCursorXY (&curx
, &cury
);
309 #ifdef FEATURE_UNIX_FILENAME_COMPLETION
310 /* expand current file name */
311 if ((current
== charcount
) ||
312 (current
== charcount
- 1 &&
313 str
[current
] == _T('"'))) /* only works at end of line*/
315 if (wLastKey
!= VK_TAB
)
317 /* if first TAB, complete filename*/
318 tempscreen
= charcount
;
319 CompleteFilename (str
, charcount
);
320 charcount
= _tcslen (str
);
323 SetCursorXY (orgx
, orgy
);
324 ConOutPrintf (_T("%s"), str
);
326 if (tempscreen
> charcount
)
328 GetCursorXY (&curx
, &cury
);
329 for (count
= tempscreen
- charcount
; count
--; )
330 ConOutChar (_T(' '));
331 SetCursorXY (curx
, cury
);
335 if (((charcount
+ orgx
) / maxx
) + orgy
> maxy
- 1)
336 orgy
+= maxy
- ((charcount
+ orgx
) / maxx
+ orgy
+ 1);
339 /* set cursor position */
340 SetCursorXY ((orgx
+ current
) % maxx
,
341 orgy
+ (orgx
+ current
) / maxx
);
342 GetCursorXY (&curx
, &cury
);
346 /*if second TAB, list matches*/
347 if (ShowCompletionMatches (str
, charcount
))
350 GetCursorXY (&orgx
, &orgy
);
351 ConOutPrintf (_T("%s"), str
);
353 /* set cursor position */
354 SetCursorXY ((orgx
+ current
) % maxx
,
355 orgy
+ (orgx
+ current
) / maxx
);
356 GetCursorXY (&curx
, &cury
);
366 #ifdef FEATURE_4NT_FILENAME_COMPLETION
368 /* used to later see if we went down to the next line */
369 tempscreen
= charcount
;
372 /* str is the whole things that is on the current line
373 that is and and out. arg 2 is weather it goes back
374 one file or forward one file */
375 CompleteFilename(str
, !(ir
.Event
.KeyEvent
.dwControlKeyState
& SHIFT_PRESSED
), szPath
, current
);
376 /* Attempt to clear the line */
377 ClearCommandLine (str
, maxlen
, orgx
, orgy
);
380 current
= charcount
= 0;
383 /* Everything is deleted, lets add it back in */
386 /* Figure out where cusor is going to be after we print it */
387 charcount
= _tcslen (str
);
390 SetCursorXY (orgx
, orgy
);
391 /* Print out what we have now */
392 ConOutPrintf (_T("%s"), str
);
394 /* Move cursor accordingly */
395 if(tempscreen
> charcount
)
397 GetCursorXY (&curx
, &cury
);
398 for(count
= tempscreen
- charcount
; count
--; )
399 ConOutChar (_T(' '));
400 SetCursorXY (curx
, cury
);
404 if(((charcount
+ orgx
) / maxx
) + orgy
> maxy
- 1)
405 orgy
+= maxy
- ((charcount
+ orgx
) / maxx
+ orgy
+ 1);
407 SetCursorXY((short)(((int)orgx
+ current
) % maxx
), (short)((int)orgy
+ ((int)orgx
+ current
) / maxx
));
408 GetCursorXY(&curx
, &cury
);
414 /* ^M does the same as return */
415 if(!(ir
.Event
.KeyEvent
.dwControlKeyState
&
416 (RIGHT_CTRL_PRESSED
|LEFT_CTRL_PRESSED
)))
422 /* end input, return to main */
423 #ifdef FEATURE_HISTORY
424 /* add to the history */
429 ConOutChar (_T('\n'));
434 /* clear str Make this callable! */
435 ClearCommandLine (str
, maxlen
, orgx
, orgy
);
438 current
= charcount
= 0;
441 #ifdef FEATURE_HISTORY
443 History_move_to_bottom();
446 #ifdef FEATURE_HISTORY
447 /* get previous command from buffer */
448 ClearCommandLine (str
, maxlen
, orgx
, orgy
);
450 current
= charcount
= _tcslen (str
);
451 if (((charcount
+ orgx
) / maxx
) + orgy
> maxy
- 1)
452 orgy
+= maxy
- ((charcount
+ orgx
) / maxx
+ orgy
+ 1);
453 ConOutPrintf (_T("%s"), str
);
454 GetCursorXY (&curx
, &cury
);
459 #ifdef FEATURE_HISTORY
460 /* get next command from buffer */
461 ClearCommandLine (str
, maxlen
, orgx
, orgy
);
463 current
= charcount
= _tcslen (str
);
464 if (((charcount
+ orgx
) / maxx
) + orgy
> maxy
- 1)
465 orgy
+= maxy
- ((charcount
+ orgx
) / maxx
+ orgy
+ 1);
466 ConOutPrintf (_T("%s"), str
);
467 GetCursorXY (&curx
, &cury
);
472 /* move cursor left */
476 if (GetCursorX () == 0)
478 SetCursorXY ((SHORT
)(maxx
- 1), (SHORT
)(GetCursorY () - 1));
484 SetCursorXY ((SHORT
)(GetCursorX () - 1), GetCursorY ());
495 /* move cursor right */
496 if (current
!= charcount
)
499 if (GetCursorX () == maxx
- 1)
501 SetCursorXY (0, (SHORT
)(GetCursorY () + 1));
507 SetCursorXY ((SHORT
)(GetCursorX () + 1), GetCursorY ());
515 ch
= ir
.Event
.KeyEvent
.uChar
.UnicodeChar
;
516 if ((ch
>= 32 && ch
<= 255) && (charcount
!= (maxlen
- 2)))
518 ch
= ir
.Event
.KeyEvent
.uChar
.AsciiChar
;
519 if ((UCHAR
)ch
>= 32 && (charcount
!= (maxlen
- 2)))
520 #endif /* _UNICODE */
522 /* insert character into string... */
523 if (bInsert
&& current
!= charcount
)
525 /* If this character insertion will cause screen scrolling,
526 * adjust the saved origin of the command prompt. */
527 tempscreen
= _tcslen(str
+ current
) + curx
;
528 if ((tempscreen
% maxx
) == (maxx
- 1) &&
529 (tempscreen
/ maxx
) + cury
== (maxy
- 1))
535 for (count
= charcount
; count
> current
; count
--)
536 str
[count
] = str
[count
- 1];
538 if (curx
== maxx
- 1)
542 ConOutPrintf (_T("%s"), &str
[current
- 1]);
543 SetCursorXY (curx
, cury
);
548 if (current
== charcount
)
551 if (GetCursorX () == maxx
- 1 && GetCursorY () == maxy
- 1)
553 if (GetCursorX () == maxx
- 1)
561 wLastKey
= ir
.Event
.KeyEvent
.wVirtualKeyCode
;
565 SetCursorType (bInsert
, TRUE
);