+++ /dev/null
-/* Copyright (c) 1992, 1995 John E. Davis
- * All rights reserved.
- *
- * You may distribute under the terms of either the GNU General Public
- * License or the Perl Artistic License.
- */
-
-#include "config.h"
-
-#include <stdio.h>
-
-#include "slang.h"
-#include "_slang.h"
-
-#define INCL_BASE
-#define INCL_NOPM
-#define INCL_VIO
-#define INCL_KBD
-#define INCL_DOS
-#if 0
-# define INCL_DOSSEMAPHORES
-#endif
-#ifdef LONG
-#undef LONG
-#endif
-#ifdef VOID
-#undef VOID
-#endif
-#include <os2.h>
-
-#include <signal.h>
-#include <process.h>
-
-KBDINFO initialKbdInfo; /* keyboard info */
-
-/* Code to read keystrokes in a separate thread */
-
-typedef struct kbdcodes {
- UCHAR ascii;
- UCHAR scan;
-/* USHORT shift; */
-} KBDCODES;
-
-#define BUFFER_LEN 4096
-static KBDCODES threadKeys[BUFFER_LEN];
-static int atEnd = 0;
-static int startBuf;
-static int endBuf;
-
-/* Original code used semaphores to control access to threadKeys.
- * It is expected that the semaphore code will be deleted after 0.97.
-*/
-#if 0
-
-#ifdef __os2_16__
-
-typedef USHORT APIRET;
-static HSEM Hmtx;
-
-#define DosRequestMutexSem(hmtx,timeout) DosSemRequest(hmtx,timeout)
-#define DosReleaseMutexSem(hmtx) DosSemClear(hmtx)
-#define DosCloseMutexSem(hmtx) DosCloseSem(hmtx)
-
-#else /* !defined(__os2_16__) */
-
-static HMTX Hmtx; /* Mutex Semaphore */
-
-#endif
-
-
-static APIRET CreateSem(void)
-{
-#ifdef __os2_16__
- char SemName[32];
- sprintf(SemName, "\\SEM\\jed\\%u", getpid());
- return ( DosCreateSem (0, &Hmtx, SemName) );
-#else
- return ( DosCreateMutexSem (NULL, &Hmtx, 0, 0) );
-#endif
-}
-
-static APIRET RequestSem(void)
-{
- return ( DosRequestMutexSem (Hmtx, -1) );
-}
-
-static APIRET ReleaseSem(void)
-{
- return ( DosReleaseMutexSem (Hmtx) );
-}
-
-static APIRET CloseSem(void)
-{
- return( DosCloseMutexSem (Hmtx) );
-}
-
-#else
-
-#define CreateSem()
-#define RequestSem()
-#define ReleaseSem()
-#define CloseSem()
-
-#endif
-
-
-static void set_kbd(void)
-{
- KBDINFO kbdInfo;
-
- kbdInfo = initialKbdInfo;
- kbdInfo.fsMask &= ~0x0001; /* not echo on */
- kbdInfo.fsMask |= 0x0002; /* echo off */
- kbdInfo.fsMask &= ~0x0008; /* cooked mode off */
- kbdInfo.fsMask |= 0x0004; /* raw mode */
- kbdInfo.fsMask &= ~0x0100; /* shift report off */
- KbdSetStatus(&kbdInfo, 0);
-}
-
-static void thread_getkey ()
-{
- KBDKEYINFO keyInfo;
- int n;
-
- while (!atEnd) { /* at end is a flag */
- set_kbd();
- KbdCharIn(&keyInfo, IO_NOWAIT, 0); /* get a character */
- if (keyInfo.fbStatus & 0x040) { /* found a char process it */
- if (keyInfo.chChar == SLang_Abort_Char) {
- if (SLang_Ignore_User_Abort == 0) SLang_Error = USER_BREAK;
- SLKeyBoard_Quit = 1;
- }
- n = (endBuf + 1) % BUFFER_LEN;
- if (n == startBuf) {
- DosBeep (500, 20);
- KbdFlushBuffer(0);
- continue;
- }
- RequestSem();
- threadKeys [n].ascii = keyInfo.chChar;
- threadKeys [n].scan = keyInfo.chScan;
-/* threadKeys [n].shift = keyInfo.fsState; */
- endBuf = n;
- ReleaseSem();
- } else /* no char available*/
- DosSleep (20);
- }
-}
-
-static void thread_code (void *Args)
-{
- (void) Args;
- startBuf = -1; /* initialize the buffer pointers */
- endBuf = -1;
- thread_getkey ();
- atEnd = 0; /* reset the flag */
- _endthread();
-}
-
-
-/* The code below is in the main thread */
-
-int SLang_init_tty(int abort_char, int dum2, int dum3)
-{
- VIOCURSORINFO cursorInfo, OldcursorInfo;
-
- (void) dum2; (void) dum3;
- if (abort_char == -1) abort_char = 3; /* ^C */
- SLang_Abort_Char = abort_char;
-
- /* set ^C off */
- signal (SIGINT, SIG_IGN);
- signal (SIGBREAK, SIG_IGN);
-
- /* set up the keyboard */
-
- initialKbdInfo.cb = sizeof(initialKbdInfo);
- KbdGetStatus(&initialKbdInfo, 0);
- set_kbd();
-
- /* open a semaphore */
- CreateSem();
-
- /* start a separate thread to read the keyboard */
-#if defined(__BORLANDC__)
- _beginthread (thread_code, 8096, NULL);
-#else
- _beginthread (thread_code, NULL, 8096, NULL);
-#endif
-
- VioGetCurType (&OldcursorInfo, 0);
- cursorInfo.yStart = 1;
- cursorInfo.cEnd = 15;
- cursorInfo.cx = 1;
- cursorInfo.attr = 1;
- if (VioSetCurType (&cursorInfo, 0))
- VioSetCurType (&OldcursorInfo, 0); /* reset to previous value */
-
- return 0;
-}
-
-void SLang_reset_tty (void)
-{
- atEnd = 1; /* set flag and wait until thread ends */
- while (atEnd) {DosSleep (0);}
-
- CloseSem();
-
- /* close the keyboard */
- KbdSetStatus(&initialKbdInfo, 0); /* restore original state */
-}
-
-#define keyWaiting() (endBuf != startBuf)
-
-/* sleep for *tsecs tenths of a sec waiting for input */
-
-int SLsys_input_pending(int tsecs)
-{
- int count = tsecs * 5;
-
- if (count)
- {
- while(count > 0)
- {
- DosSleep(20); /* 20 ms or 1/50 sec */
- if (keyWaiting ()) break;
- count--;
- }
- return(count);
- }
- else return(keyWaiting ());
-}
-
-unsigned int SLsys_getkey ()
-{
- unsigned int c;
- unsigned char scan;
-
- int tsecs = 300;
-
- if (!keyWaiting())
- while (!SLsys_input_pending(tsecs));
-
- /* read codes from buffer */
- RequestSem();
- startBuf = (startBuf + 1) % BUFFER_LEN;
- c = threadKeys [startBuf].ascii;
- scan = threadKeys [startBuf].scan;
- ReleaseSem();
-
- if ((c == 8) && (scan == 0x0e)) c = 127;
- if (c == 0xE0) c = 0;
- if (c == 0) SLang_ungetkey (scan);
- return (c);
-}
-
-
-void SLang_set_abort_signal (void (*dum)(int))
-{
- (void) dum;
-}
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