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/* Copyright (c) 1992, 1998 John E. Davis
* This file is part of the S-Lang library.
*
* You may distribute under the terms of either the GNU General Public
* License or the Perl Artistic License.
*/
#include "config.h"
#include "sl-feat.h"
#include <stdio.h>
#include "slang.h"
#include "_slang.h"
unsigned int SLang_Input_Buffer_Len = 0;
unsigned char SLang_Input_Buffer [SL_MAX_INPUT_BUFFER_LEN];
int SLang_Abort_Char = 7;
int SLang_Ignore_User_Abort = 0;
/* This has the effect of mapping all characters in the range 128-169 to
* ESC [ something
*/
unsigned int SLang_getkey (void)
{
unsigned int imax;
unsigned int ch;
if (SLang_Input_Buffer_Len)
{
ch = (unsigned int) *SLang_Input_Buffer;
SLang_Input_Buffer_Len--;
imax = SLang_Input_Buffer_Len;
SLMEMCPY ((char *) SLang_Input_Buffer,
(char *) (SLang_Input_Buffer + 1), imax);
}
else if (SLANG_GETKEY_ERROR == (ch = _SLsys_getkey ())) return ch;
#if _SLANG_MAP_VTXXX_8BIT
# if !defined(IBMPC_SYSTEM)
if (ch & 0x80)
{
unsigned char i;
i = (unsigned char) (ch & 0x7F);
if (i < ' ')
{
i += 64;
SLang_ungetkey (i);
ch = 27;
}
}
# endif
#endif
return(ch);
}
int SLang_ungetkey_string (unsigned char *s, unsigned int n)
{
register unsigned char *bmax, *b, *b1;
if (SLang_Input_Buffer_Len + n + 3 > SL_MAX_INPUT_BUFFER_LEN)
return -1;
b = SLang_Input_Buffer;
bmax = (b - 1) + SLang_Input_Buffer_Len;
b1 = bmax + n;
while (bmax >= b) *b1-- = *bmax--;
bmax = b + n;
while (b < bmax) *b++ = *s++;
SLang_Input_Buffer_Len += n;
return 0;
}
int SLang_buffer_keystring (unsigned char *s, unsigned int n)
{
if (n + SLang_Input_Buffer_Len + 3 > SL_MAX_INPUT_BUFFER_LEN) return -1;
SLMEMCPY ((char *) SLang_Input_Buffer + SLang_Input_Buffer_Len,
(char *) s, n);
SLang_Input_Buffer_Len += n;
return 0;
}
int SLang_ungetkey (unsigned char ch)
{
return SLang_ungetkey_string(&ch, 1);
}
int SLang_input_pending (int tsecs)
{
int n;
unsigned char c;
if (SLang_Input_Buffer_Len) return (int) SLang_Input_Buffer_Len;
n = _SLsys_input_pending (tsecs);
if (n <= 0) return 0;
c = (unsigned char) SLang_getkey ();
SLang_ungetkey_string (&c, 1);
return n;
}
void SLang_flush_input (void)
{
int quit = SLKeyBoard_Quit;
SLang_Input_Buffer_Len = 0;
SLKeyBoard_Quit = 0;
while (_SLsys_input_pending (0) > 0)
{
(void) _SLsys_getkey ();
/* Set this to 0 because _SLsys_getkey may stuff keyboard buffer if
* key sends key sequence (OS/2, DOS, maybe VMS).
*/
SLang_Input_Buffer_Len = 0;
}
SLKeyBoard_Quit = quit;
}
#ifdef IBMPC_SYSTEM
static int Map_To_ANSI;
int SLgetkey_map_to_ansi (int enable)
{
Map_To_ANSI = enable;
return 0;
}
unsigned int _SLpc_convert_scancode (unsigned int scan)
{
char *keystr;
if (Map_To_ANSI == 0)
{
SLang_ungetkey (scan);
return 0;
}
/* These mappings correspond to what rxvt produces under Linux */
switch (scan)
{
default:
return 0;
case 'G': /* home */
keystr = "[1~";
break;
case 'H': /* up */
keystr = "[A";
break;
case 'I': /* PgUp */
keystr = "[5~";
break;
case 'K': /* Left */
keystr = "[D";
break;
case 'M': /* Right */
keystr = "[C";
break;
case 'O': /* End */
keystr = "[4~";
break;
case 'P': /* Down */
keystr = "[B";
break;
case 'Q': /* PgDn */
keystr = "[6~";
break;
case 'R': /* Insert */
keystr = "[2~";
break;
case 'S': /* Delete */
keystr = "[3~";
break;
case ';': /* F1 */
case 'T': /* (shift) */
case '^': /* (ctrl) */
case 'h': /* (alt) */
keystr = "[11~";
break;
case '<': /* F2 */
case 'U': /* (shift) */
case '_': /* (ctrl) */
case 'i': /* (alt) */
keystr = "[12~";
break;
case '=': /* F3 */
case 'V': /* (shift) */
case '`': /* (ctrl) */
case 'j': /* (alt) */
keystr = "[13~";
break;
case '>': /* F4 */
case 'W': /* (shift) */
case 'a': /* (ctrl) */
case 'k': /* (alt) */
keystr = "[14~";
break;
case '?': /* F5 */
case 'X': /* (shift) */
case 'b': /* (ctrl) */
case 'l': /* (alt) */
keystr = "[15~";
break;
case '@': /* F6 */
case 'Y': /* (shift) */
case 'c': /* (ctrl) */
case 'm': /* (alt) */
keystr = "[17~";
break;
case 'A': /* F7 */
case 'Z': /* (shift) */
case 'd': /* (ctrl) */
case 'n': /* (alt) */
keystr = "[18~";
break;
case 'B': /* F8 */
case '[': /* (shift) */
case 'e': /* (ctrl) */
case 'o': /* (alt) */
keystr = "[19~";
break;
case 'C': /* F9 */
case '\\': /* (shift) */
case 'f': /* (ctrl) */
case 'p': /* (alt) */
keystr = "[20~";
break;
case 'D': /* F10 */
case ']': /* (shift) */
case 'g': /* (ctrl) */
case 'q': /* (alt) */
keystr = "[21~";
break;
case 133: /* F11 */
case 135: /* (shift) */
case 137: /* (ctrl) */
case 139: /* (alt) */
keystr = "[23~";
break;
case 134: /* F12 */
case 136: /* (shift) */
case 138: /* (ctrl) */
case 140: /* (alt) */
keystr = "[24~";
break;
}
(void) SLang_ungetkey_string ((unsigned char *)keystr, strlen (keystr));
return 27;
}
#endif
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