home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Otherware
/
Otherware_1_SB_Development.iso
/
amiga
/
os
/
kludge03.tz
/
kludge03
/
mk74
/
user
/
libmach
/
printf.c
< prev
next >
Wrap
C/C++ Source or Header
|
1992-02-26
|
3KB
|
168 lines
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* HISTORY
* $Log: printf.c,v $
* Revision 2.5 92/02/19 15:10:55 elf
* Created.
* [92/02/11 rpd]
*
*/
#include <mach.h>
#include <device/device.h>
#include <varargs.h>
static mach_port_t console_port;
void
printf_init(device_server_port)
mach_port_t device_server_port;
{
(void) device_open(device_server_port,
0,
"console",
&console_port);
}
#define PRINTF_BUFMAX 128
struct printf_state {
char buf[PRINTF_BUFMAX + 1]; /* extra for '\r\n' */
unsigned int index;
};
static void
flush(state)
struct printf_state *state;
{
int amt;
(void) device_write_inband(console_port, 0, 0,
state->buf, state->index, &amt);
state->index = 0;
}
static void
putchar(arg, c)
char *arg;
int c;
{
struct printf_state *state = (struct printf_state *) arg;
if (c == '\n') {
state->buf[state->index] = '\r';
state->index++;
}
state->buf[state->index] = c;
state->index++;
if (state->index >= PRINTF_BUFMAX)
flush(state);
}
/*
* Printing (to console)
*/
vprintf(fmt, args)
char *fmt;
va_list args;
{
struct printf_state state;
state.index = 0;
_doprnt(fmt, args, 0, (void (*)()) putchar, (char *) &state);
if (state.index != 0)
flush(&state);
}
/*VARARGS1*/
printf(fmt, va_alist)
char *fmt;
va_dcl
{
va_list args;
va_start(args);
vprintf(fmt, args);
va_end(args);
}
safe_gets(str, maxlen)
char *str;
int maxlen;
{
register char *lp;
register int c;
char inbuf[IO_INBAND_MAX];
unsigned int count;
register char *ip;
char *strmax = str + maxlen - 1; /* allow space for trailing 0 */
lp = str;
for (;;) {
count = IO_INBAND_MAX;
(void) device_read_inband(console_port, 0, 0,
sizeof(inbuf), inbuf, &count);
for (ip = inbuf; ip < &inbuf[count]; ip++) {
c = *ip;
switch (c) {
case '\n':
case '\r':
printf("\n");
*lp++ = 0;
return;
case '\b':
case '#':
case '\177':
if (lp > str) {
printf("\b \b");
lp--;
}
continue;
case '@':
case 'u'&037:
lp = str;
printf("\n\r");
continue;
default:
if (c >= ' ' && c < '\177') {
if (lp < strmax) {
*lp++ = c;
printf("%c", c);
}
else {
printf("%c", '\007'); /* beep */
}
}
}
}
}
}