Mercurial > hg > early-roguelike
changeset 86:8757a0593e6e
srogue: add arrow-key support.
This is a first attempt which may not be completely portable.
| author | John "Elwin" Edwards |
|---|---|
| date | Sat, 10 Aug 2013 17:43:58 -0700 |
| parents | d852b8f088c5 |
| children | f871cb0539d3 |
| files | srogue/Makefile srogue/io.c srogue/main.c srogue/mdport.c |
| diffstat | 4 files changed, 660 insertions(+), 9 deletions(-) [+] |
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--- a/srogue/Makefile Fri Aug 09 09:34:07 2013 -0700 +++ b/srogue/Makefile Sat Aug 10 17:43:58 2013 -0700 @@ -16,15 +16,15 @@ HDRS= bob.h cx.h ncx.h rdk.h rogue.h OBJS= vers.o armor.o chase.o command.o daemon.o daemons.o disply.o encumb.o \ - fight.o global.o init.o io.o list.o main.o misc.o monsters.o move.o \ - new_leve.o options.o pack.o passages.o potions.o pstats.o rings.o rip.o \ - rooms.o save.o scrolls.o state.o sticks.o things.o trader.o weapons.o \ - wizard.o xcrypt.o + fight.o global.o init.o io.o list.o main.o mdport.o misc.o monsters.o \ + move.o new_leve.o options.o pack.o passages.o potions.o pstats.o \ + rings.o rip.o rooms.o save.o scrolls.o state.o sticks.o things.o \ + trader.o weapons.o wizard.o xcrypt.o CFILES= vers.c armor.c chase.c command.c daemon.c daemons.c disply.c encumb.c \ - fight.c global.c init.c io.c list.c main.c misc.c monsters.c move.c \ - new_leve.c options.c pack.c passages.c potions.c pstats.c rings.c rip.c \ - rooms.c save.c scrolls.c state.c sticks.c things.c trader.c weapons.c \ - wizard.c xcrypt.c + fight.c global.c init.c io.c list.c main.c mdport.c misc.c monsters.c \ + move.c new_leve.c options.c pack.c passages.c potions.c pstats.c \ + rings.c rip.c rooms.c save.c scrolls.c state.c sticks.c things.c \ + trader.c weapons.c wizard.c xcrypt.c MISC= Makefile LICENSE.TXT rogue.nr
--- a/srogue/io.c Fri Aug 09 09:34:07 2013 -0700 +++ b/srogue/io.c Sat Aug 10 17:43:58 2013 -0700 @@ -20,6 +20,8 @@ #include "rogue.h" #include "rogue.ext" +int md_readchar(WINDOW *win); + /* * msg: * Display a message at the top of the screen. @@ -132,7 +134,7 @@ char c; fflush(stdout); - return( wgetch(cw) ); + return( md_readchar(cw) ); } char *hungstr[] = {
--- a/srogue/main.c Fri Aug 09 09:34:07 2013 -0700 +++ b/srogue/main.c Sat Aug 10 17:43:58 2013 -0700 @@ -235,6 +235,7 @@ cw = newwin(0, 0, 0, 0); mw = newwin(0, 0, 0, 0); hw = newwin(0, 0, 0, 0); + keypad(cw, 1); waswizard = wizard; /* Draw current level */
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/srogue/mdport.c Sat Aug 10 17:43:58 2013 -0700 @@ -0,0 +1,648 @@ +/* + mdport.c - Machine Dependent Code + + Copyright (C) 2005-2008 Nicholas J. Kisseberth + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + 3. Neither the name(s) of the author(s) nor the names of other contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS ``AS IS'' AND + ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTORS BE LIABLE + FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + SUCH DAMAGE. +*/ + +/* This is a temporary stub version of rogue5's mdport.c. It is only to make + * md_readchar() available until srogue is ported to autoconf. Then the + * whole file should work. + */ + +#include <stdlib.h> +#include <string.h> + +#if defined(_WIN32) +#include <Windows.h> +#include <Lmcons.h> +#include <io.h> +#include <conio.h> +#pragma warning( disable: 4201 ) +#include <shlobj.h> +#pragma warning( default: 4201 ) +#include <Shlwapi.h> +#undef MOUSE_MOVED +#endif + +#include <sys/types.h> + +#include <curses.h> /* AIX requires curses.h be included before term.h */ + +#include <ctype.h> +#include "rogue.h" + +/* + Cursor/Keypad Support + + Sadly Cursor/Keypad support is less straightforward than it should be. + + The various terminal emulators/consoles choose to differentiate the + cursor and keypad keys (with modifiers) in different ways (if at all!). + Furthermore they use different code set sequences for each key only + a subset of which the various curses libraries recognize. Partly due + to incomplete termcap/terminfo entries and partly due to inherent + limitations of those terminal capability databases. + + I give curses first crack at decoding the sequences. If it fails to decode + it we check for common ESC-prefixed sequences. + + All cursor/keypad results are translated into standard rogue movement + commands. + + Unmodified keys are translated to walk commands: hjklyubn + Modified (shift,control,alt) are translated to run commands: HJKLYUBN + + Console and supported (differentiated) keys + Interix: Cursor Keys, Keypad, Ctl-Keypad + Cygwin: Cursor Keys, Keypad, Alt-Cursor Keys + MSYS: Cursor Keys, Keypad, Ctl-Cursor Keys, Ctl-Keypad + Win32: Cursor Keys, Keypad, Ctl/Shift/Alt-Cursor Keys, Ctl/Alt-Keypad + DJGPP: Cursor Keys, Keypad, Ctl/Shift/Alt-Cursor Keys, Ctl/Alt-Keypad + + Interix Console (raw, ncurses) + ============================== + normal shift ctrl alt + ESC [D, ESC F^, ESC [D, ESC [D /# Left #/ + ESC [C, ESC F$, ESC [C, ESC [C /# Right #/ + ESC [A, ESC F-, local win, ESC [A /# Up #/ + ESC [B, ESC F+, local win, ESC [B /# Down #/ + ESC [H, ESC [H, ESC [H, ESC [H /# Home #/ + ESC [S, local win, ESC [S, ESC [S /# Page Up #/ + ESC [T, local win, ESC [T, ESC [T /# Page Down #/ + ESC [U, ESC [U, ESC [U, ESC [U /# End #/ + ESC [D, ESC F^, ESC [D, O /# Keypad Left #/ + ESC [C, ESC F$, ESC [C, O /# Keypad Right #/ + ESC [A, ESC [A, ESC [-1, O /# Keypad Up #/ + ESC [B, ESC [B, ESC [-2, O /# Keypad Down #/ + ESC [H, ESC [H, ESC [-263, O /# Keypad Home #/ + ESC [S, ESC [S, ESC [-19, O /# Keypad PgUp #/ + ESC [T, ESC [T, ESC [-20, O /# Keypad PgDn #/ + ESC [U, ESC [U, ESC [-21, O /# Keypad End #/ + nothing, nothing, nothing, O /# Kaypad 5 #/ + + Interix Console (term=interix, ncurses) + ============================== + KEY_LEFT, ESC F^, KEY_LEFT, KEY_LEFT /# Left #/ + KEY_RIGHT, ESC F$, KEY_RIGHT, KEY_RIGHT /# Right #/ + KEY_UP, 0x146, local win, KEY_UP /# Up #/ + KEY_DOWN, 0x145, local win, KEY_DOWN /# Down #/ + ESC [H, ESC [H, ESC [H, ESC [H /# Home #/ + KEY_PPAGE, local win, KEY_PPAGE, KEY_PPAGE /# Page Up #/ + KEY_NPAGE, local win, KEY_NPAGE, KEY_NPAGE /# Page Down #/ + KEY_LL, KEY_LL, KEY_LL, KEY_LL /# End #/ + KEY_LEFT, ESC F^, ESC [-4, O /# Keypad Left #/ + KEY_RIGHT, ESC F$, ESC [-3, O /# Keypad Right #/ + KEY_UP, KEY_UP, ESC [-1, O /# Keypad Up #/ + KEY_DOWN, KEY_DOWN, ESC [-2, O /# Keypad Down #/ + ESC [H, ESC [H, ESC [-263, O /# Keypad Home #/ + KEY_PPAGE, KEY_PPAGE, ESC [-19, O /# Keypad PgUp #/ + KEY_NPAGE, KEY_NPAGE, ESC [-20, O /# Keypad PgDn #/ + KEY_LL, KEY_LL, ESC [-21, O /# Keypad End #/ + nothing, nothing, nothing, O /# Keypad 5 #/ + + Cygwin Console (raw, ncurses) + ============================== + normal shift ctrl alt + ESC [D, ESC [D, ESC [D, ESC ESC [D /# Left #/ + ESC [C, ESC [C, ESC [C, ESC ESC [C /# Rght #/ + ESC [A, ESC [A, ESC [A, ESC ESC [A /# Up #/ + ESC [B, ESC [B, ESC [B, ESC ESC [B /# Down #/ + ESC [1~, ESC [1~, ESC [1~, ESC ESC [1~ /# Home #/ + ESC [5~, ESC [5~, ESC [5~, ESC ESC [5~ /# Page Up #/ + ESC [6~, ESC [6~, ESC [6~, ESC ESC [6~ /# Page Down #/ + ESC [4~, ESC [4~, ESC [4~, ESC ESC [4~ /# End #/ + ESC [D, ESC [D, ESC [D, ESC ESC [D,O /# Keypad Left #/ + ESC [C, ESC [C, ESC [C, ESC ESC [C,O /# Keypad Right #/ + ESC [A, ESC [A, ESC [A, ESC ESC [A,O /# Keypad Up #/ + ESC [B, ESC [B, ESC [B, ESC ESC [B,O /# Keypad Down #/ + ESC [1~, ESC [1~, ESC [1~, ESC ESC [1~,O /# Keypad Home #/ + ESC [5~, ESC [5~, ESC [5~, ESC ESC [5~,O /# Keypad PgUp #/ + ESC [6~, ESC [6~, ESC [6~, ESC ESC [6~,O /# Keypad PgDn #/ + ESC [4~, ESC [4~, ESC [4~, ESC ESC [4~,O /# Keypad End #/ + ESC [-71, nothing, nothing, O /# Keypad 5 #/ + + Cygwin Console (term=cygwin, ncurses) + ============================== + KEY_LEFT, KEY_LEFT, KEY_LEFT, ESC-260 /# Left #/ + KEY_RIGHT, KEY_RIGHT, KEY_RIGHT, ESC-261 /# Rght #/ + KEY_UP, KEY_UP, KEY_UP, ESC-259 /# Up #/ + KEY_DOWN, KEY_DOWN, KEY_DOWN, ESC-258 /# Down #/ + KEY_HOME, KEY_HOME, KEY_HOME, ESC-262 /# Home #/ + KEY_PPAGE, KEY_PPAGE, KEY_PPAGE, ESC-339 /# Page Up #/ + KEY_NPAGE, KEY_NPAGE, KEY_NPAGE, ESC-338 /# Page Down #/ + KEY_END, KEY_END, KEY_END, ESC-360 /# End #/ + KEY_LEFT, KEY_LEFT, KEY_LEFT, ESC-260,O /# Keypad Left #/ + KEY_RIGHT, KEY_RIGHT, KEY_RIGHT, ESC-261,O /# Keypad Right #/ + KEY_UP, KEY_UP, KEY_UP, ESC-259,O /# Keypad Up #/ + KEY_DOWN, KEY_DOWN, KEY_DOWN, ESC-258,O /# Keypad Down #/ + KEY_HOME, KEY_HOME, KEY_HOME, ESC-262,O /# Keypad Home #/ + KEY_PPAGE, KEY_PPAGE, KEY_PPAGE, ESC-339,O /# Keypad PgUp #/ + KEY_NPAGE, KEY_NPAGE, KEY_NPAGE, ESC-338,O /# Keypad PgDn #/ + KEY_END, KEY_END, KEY_END, ESC-360,O /# Keypad End #/ + ESC [G, nothing, nothing, O /# Keypad 5 #/ + + MSYS Console (raw, ncurses) + ============================== + normal shift ctrl alt + ESC OD, ESC [d, ESC Od nothing /# Left #/ + ESC OE, ESC [e, ESC Oe, nothing /# Right #/ + ESC OA, ESC [a, ESC Oa, nothing /# Up #/ + ESC OB, ESC [b, ESC Ob, nothing /# Down #/ + ESC [7~, ESC [7$, ESC [7^, nothing /# Home #/ + ESC [5~, local window, ESC [5^, nothing /# Page Up #/ + ESC [6~, local window, ESC [6^, nothing /# Page Down #/ + ESC [8~, ESC [8$, ESC [8^, nothing /# End #/ + ESC OD, ESC [d, ESC Od O /# Keypad Left #/ + ESC OE, ESC [c, ESC Oc, O /# Keypad Right #/ + ESC OA, ESC [a, ESC Oa, O /# Keypad Up #/ + ESC OB, ESC [b, ESC Ob, O /# Keypad Down #/ + ESC [7~, ESC [7$, ESC [7^, O /# Keypad Home #/ + ESC [5~, local window, ESC [5^, O /# Keypad PgUp #/ + ESC [6~, local window, ESC [6^, O /# Keypad PgDn #/ + ESC [8~, ESC [8$, ESC [8^, O /# Keypad End #/ + 11, 11, 11, O /# Keypad 5 #/ + + MSYS Console (term=rxvt, ncurses) + ============================== + normal shift ctrl alt + KEY_LEFT, KEY_SLEFT, 514 nothing /# Left #/ + KEY_RIGHT, KEY_SRIGHT, 516, nothing /# Right #/ + KEY_UP, 518, 519, nothing /# Up #/ + KEY_DOWN, 511, 512, nothing /# Down #/ + KEY_HOME, KEY_SHOME, ESC [7^, nothing /# Home #/ + KEY_PPAGE, local window, ESC [5^, nothing /# Page Up #/ + KEY_NPAGE, local window, ESC [6^, nothing /# Page Down #/ + KEY_END, KEY_SEND, KEY_EOL, nothing /# End #/ + KEY_LEFT, KEY_SLEFT, 514 O /# Keypad Left #/ + KEY_RIGHT, KEY_SRIGHT, 516, O /# Keypad Right #/ + KEY_UP, 518, 519, O /# Keypad Up #/ + KEY_DOWN, 511, 512, O /# Keypad Down #/ + KEY_HOME, KEY_SHOME, ESC [7^, O /# Keypad Home #/ + KEY_PPAGE, local window, ESC [5^, O /# Keypad PgUp #/ + KEY_NPAGE, local window, ESC [6^, O /# Keypad PgDn #/ + KEY_END, KEY_SEND, KEY_EOL, O /# Keypad End #/ + 11, 11, 11, O /# Keypad 5 #/ + + Win32 Console (raw, pdcurses) + DJGPP Console (raw, pdcurses) + ============================== + normal shift ctrl alt + 260, 391, 443, 493 /# Left #/ + 261, 400, 444, 492 /# Right #/ + 259, 547, 480, 490 /# Up #/ + 258, 548, 481, 491 /# Down #/ + 262, 388, 447, 524 /# Home #/ + 339, 396, 445, 526 /# Page Up #/ + 338, 394, 446, 520 /# Page Down #/ + 358, 384, 448, 518 /# End #/ + 452, 52('4'), 511, 521 /# Keypad Left #/ + 454, 54('6'), 513, 523 /# Keypad Right #/ + 450, 56('8'), 515, 525 /# Keypad Up #/ + 456, 50('2'), 509, 519 /# Keypad Down #/ + 449, 55('7'), 514, 524 /# Keypad Home #/ + 451, 57('9'), 516, 526 /# Keypad PgUp #/ + 457, 51('3'), 510, 520 /# Keypad PgDn #/ + 455, 49('1'), 508, 518 /# Keypad End #/ + 453, 53('5'), 512, 522 /# Keypad 5 #/ + + Win32 Console (pdcurses, MSVC/MingW32) + DJGPP Console (pdcurses) + ============================== + normal shift ctrl alt + KEY_LEFT, KEY_SLEFT, CTL_LEFT, ALT_LEFT /# Left #/ + KEY_RIGHT, KEY_SRIGHT, CTL_RIGHT, ALT_RIGHT /# Right #/ + KEY_UP, KEY_SUP, CTL_UP, ALT_UP /# Up #/ + KEY_DOWN, KEY_SDOWN, CTL_DOWN, ALT_DOWN /# Down #/ + KEY_HOME, KEY_SHOME, CTL_HOME, ALT_HOME /# Home #/ + KEY_PPAGE, KEY_SPREVIOUS, CTL_PGUP, ALT_PGUP /# Page Up #/ + KEY_NPAGE, KEY_SNEXTE, CTL_PGDN, ALT_PGDN /# Page Down #/ + KEY_END, KEY_SEND, CTL_END, ALT_END /# End #/ + KEY_B1, 52('4'), CTL_PAD4, ALT_PAD4 /# Keypad Left #/ + KEY_B3, 54('6'), CTL_PAD6, ALT_PAD6 /# Keypad Right #/ + KEY_A2, 56('8'), CTL_PAD8, ALT_PAD8 /# Keypad Up #/ + KEY_C2, 50('2'), CTL_PAD2, ALT_PAD2 /# Keypad Down #/ + KEY_A1, 55('7'), CTL_PAD7, ALT_PAD7 /# Keypad Home #/ + KEY_A3, 57('9'), CTL_PAD9, ALT_PAD9 /# Keypad PgUp #/ + KEY_C3, 51('3'), CTL_PAD3, ALT_PAD3 /# Keypad PgDn #/ + KEY_C1, 49('1'), CTL_PAD1, ALT_PAD1 /# Keypad End #/ + KEY_B2, 53('5'), CTL_PAD5, ALT_PAD5 /# Keypad 5 #/ + + Windows Telnet (raw) + ============================== + normal shift ctrl alt + ESC [D, ESC [D, ESC [D, ESC [D /# Left #/ + ESC [C, ESC [C, ESC [C, ESC [C /# Right #/ + ESC [A, ESC [A, ESC [A, ESC [A /# Up #/ + ESC [B, ESC [B, ESC [B, ESC [B /# Down #/ + ESC [1~, ESC [1~, ESC [1~, ESC [1~ /# Home #/ + ESC [5~, ESC [5~, ESC [5~, ESC [5~ /# Page Up #/ + ESC [6~, ESC [6~, ESC [6~, ESC [6~ /# Page Down #/ + ESC [4~, ESC [4~, ESC [4~, ESC [4~ /# End #/ + ESC [D, ESC [D, ESC [D, ESC [D /# Keypad Left #/ + ESC [C, ESC [C, ESC [C, ESC [C /# Keypad Right #/ + ESC [A, ESC [A, ESC [A, ESC [A /# Keypad Up #/ + ESC [B, ESC [B, ESC [B, ESC [B /# Keypad Down #/ + ESC [1~, ESC [1~, ESC [1~, ESC [1~ /# Keypad Home #/ + ESC [5~, ESC [5~, ESC [5~, ESC [5~ /# Keypad PgUp #/ + ESC [6~, ESC [6~, ESC [6~, ESC [6~ /# Keypad PgDn #/ + ESC [4~, ESC [4~, ESC [4~, ESC [4~ /# Keypad End #/ + nothing, nothing, nothing, nothing /# Keypad 5 #/ + + Windows Telnet (term=xterm) + ============================== + normal shift ctrl alt + KEY_LEFT, KEY_LEFT, KEY_LEFT, KEY_LEFT /# Left #/ + KEY_RIGHT, KEY_RIGHT, KEY_RIGHT, KEY_RIGHT /# Right #/ + KEY_UP, KEY_UP, KEY_UP, KEY_UP /# Up #/ + KEY_DOWN, KEY_DOWN, KEY_DOWN, KEY_DOWN /# Down #/ + ESC [1~, ESC [1~, ESC [1~, ESC [1~ /# Home #/ + KEY_PPAGE, KEY_PPAGE, KEY_PPAGE, KEY_PPAGE /# Page Up #/ + KEY_NPAGE, KEY_NPAGE, KEY_NPAGE, KEY_NPAGE /# Page Down #/ + ESC [4~, ESC [4~, ESC [4~, ESC [4~ /# End #/ + KEY_LEFT, KEY_LEFT, KEY_LEFT, O /# Keypad Left #/ + KEY_RIGHT, KEY_RIGHT, KEY_RIGHT, O /# Keypad Right #/ + KEY_UP, KEY_UP, KEY_UP, O /# Keypad Up #/ + KEY_DOWN, KEY_DOWN, KEY_DOWN, O /# Keypad Down #/ + ESC [1~, ESC [1~, ESC [1~, ESC [1~ /# Keypad Home #/ + KEY_PPAGE, KEY_PPAGE, KEY_PPAGE, KEY_PPAGE /# Keypad PgUp #/ + KEY_NPAGE, KEY_NPAGE, KEY_NPAGE, KEY_NPAGE /# Keypad PgDn #/ + ESC [4~, ESC [4~, ESC [4~, O /# Keypad End #/ + ESC [-71, nothing, nothing, O /# Keypad 5 #/ + + PuTTY + ============================== + normal shift ctrl alt + ESC [D, ESC [D, ESC OD, ESC [D /# Left #/ + ESC [C, ESC [C, ESC OC, ESC [C /# Right #/ + ESC [A, ESC [A, ESC OA, ESC [A /# Up #/ + ESC [B, ESC [B, ESC OB, ESC [B /# Down #/ + ESC [1~, ESC [1~, local win, ESC [1~ /# Home #/ + ESC [5~, local win, local win, ESC [5~ /# Page Up #/ + ESC [6~, local win, local win, ESC [6~ /# Page Down #/ + ESC [4~, ESC [4~, local win, ESC [4~ /# End #/ + ESC [D, ESC [D, ESC [D, O /# Keypad Left #/ + ESC [C, ESC [C, ESC [C, O /# Keypad Right #/ + ESC [A, ESC [A, ESC [A, O /# Keypad Up #/ + ESC [B, ESC [B, ESC [B, O /# Keypad Down #/ + ESC [1~, ESC [1~, ESC [1~, O /# Keypad Home #/ + ESC [5~, ESC [5~, ESC [5~, O /# Keypad PgUp #/ + ESC [6~, ESC [6~, ESC [6~, O /# Keypad PgDn #/ + ESC [4~, ESC [4~, ESC [4~, O /# Keypad End #/ + nothing, nothing, nothing, O /# Keypad 5 #/ + + PuTTY + ============================== + normal shift ctrl alt + KEY_LEFT, KEY_LEFT, ESC OD, ESC KEY_LEFT /# Left #/ + KEY_RIGHT KEY_RIGHT, ESC OC, ESC KEY_RIGHT /# Right #/ + KEY_UP, KEY_UP, ESC OA, ESC KEY_UP /# Up #/ + KEY_DOWN, KEY_DOWN, ESC OB, ESC KEY_DOWN /# Down #/ + ESC [1~, ESC [1~, local win, ESC ESC [1~ /# Home #/ + KEY_PPAGE local win, local win, ESC KEY_PPAGE /# Page Up #/ + KEY_NPAGE local win, local win, ESC KEY_NPAGE /# Page Down #/ + ESC [4~, ESC [4~, local win, ESC ESC [4~ /# End #/ + ESC Ot, ESC Ot, ESC Ot, O /# Keypad Left #/ + ESC Ov, ESC Ov, ESC Ov, O /# Keypad Right #/ + ESC Ox, ESC Ox, ESC Ox, O /# Keypad Up #/ + ESC Or, ESC Or, ESC Or, O /# Keypad Down #/ + ESC Ow, ESC Ow, ESC Ow, O /# Keypad Home #/ + ESC Oy, ESC Oy, ESC Oy, O /# Keypad PgUp #/ + ESC Os, ESC Os, ESC Os, O /# Keypad PgDn #/ + ESC Oq, ESC Oq, ESC Oq, O /# Keypad End #/ + ESC Ou, ESC Ou, ESC Ou, O /# Keypad 5 #/ +*/ + +#define M_NORMAL 0 +#define M_ESC 1 +#define M_KEYPAD 2 +#define M_TRAIL 3 + +int undo[5]; +int uindex = -1; + +int +reread() +{ + int redo; + + if (uindex < 0) + return 0; + + redo = undo[0]; + undo[0] = undo[1]; + undo[1] = undo[2]; + undo[2] = undo[3]; + undo[3] = undo[4]; + uindex--; + return redo; +} + +void +unread(int c) +{ + if (uindex >= 4) + abort(); +