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conin.c@ 6262b5c

Last change on this file since 6262b5c was 6262b5c, checked in by Thomas Lopatic <thomas@…>, 8 years ago
Added include files for global functions and variables.
Property mode set to `100644`
File size: 1.0 KB

Line
1	/*
2	=============================================================================
3	conin.c -- read from the console
4	Version 6 -- 1987-06-30 -- D.N. Lynx Crowe
5	=============================================================================
6	*/
7
8	#define _FS_DEF_ /* to avoid unnecessary externals */
9
10	#include "all.h"
11
12	extern void memcpy(void vp1, void *vp2, int16_t n);
13	extern int16_t readbuf(int16_t dev, int8_t *buf);
14	extern void writeln(int16_t unit, int8_t *buf);
15
16	int8_t _ConBuf[258]; /* console input buffer */
17	int16_t _CBused;
18
19	int16_t _conin(int8_t *buff, int16_t len)
20	{
21	int16_t nbp;
22	register int16_t l;
23
24	if (_ConBuf[1] EQ 0) {
25
26	_ConBuf[0] = 255;
27	_ConBuf[1] = _ConBuf[2] = 0;
28
29	readbuf(CON_DEV, _ConBuf);
30	writeln(CON_DEV, "\r\n");
31
32	if (_ConBuf[2] EQ 0x1a) {
33
34	_ConBuf[1] = 0;
35	return(0);
36	}
37
38	nbp = ++_ConBuf[1];
39	_ConBuf[nbp++ + 1] = '\r';
40	_ConBuf[nbp + 1] = '\n';
41	_CBused = 2;
42	}
43
44	if ((l = _ConBuf[1]) > len)
45	l = len;
46
47	memcpy(buff, (_ConBuf + _CBused), l);
48	_CBused += l;
49	_ConBuf[1] -= l;
50	return (l);
51	}
52

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