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/*
* Copyright 1998, Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include <stdarg.h>
#include "pmapi.h"
#include "impl.h"
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_TERMIOS_H
#include <termios.h>
#endif
#ifdef HAVE_TERMIO_H
#include <termio.h>
#endif
#define MINCOLS 80
#define MINROWS 24
static int neols = -1;
static int needresize;
static int needscroll;
static int skiprest;
static int nrows;
static int ncols;
static char shortmsg[] = "more? (h=help) ";
static char longmsg[] = \
"[q or n to stop, y or <space> to go on, <enter> to step] more? ";
#ifdef HAVE_TERMIO_H
static struct termio otty;
#endif
void setio(int reset) { neols = 0; skiprest = reset; }
void setscroll(void) { needscroll = 1; }
int resized(void) { return needresize; }
/* looks after window resizing for the printing routine */
void
onwinch(int dummy)
{
#ifdef SIGWINCH
__pmSetSignalHandler(SIGWINCH, onwinch);
#endif
needresize = 1;
}
/* in interactive mode scrolling, if no more wanted skiprest is set */
static void
promptformore(void)
{
int i;
int ch;
int sts = 1;
char c;
char *prompt;
#ifdef HAVE_TERMIO_H
static int first = 1;
struct termio ntty;
#endif
#ifdef HAVE_TERMIO_H
if (first) {
if (ioctl(0, TCGETA, &otty) < 0) {
fprintf(stderr, "%s: TCGETA ioctl failed: %s\n", pmProgname,
osstrerror());
exit(1);
}
first = 0;
}
/* put terminal into raw mode so we can read input immediately */
memcpy(&ntty, &otty, sizeof(struct termio));
ntty.c_cc[VMIN] = 1;
ntty.c_cc[VTIME] = 1;
ntty.c_lflag &= ~(ICANON | ECHO);
if (ioctl(0, TCSETAW, &ntty) < 0) {
fprintf(stderr, "%s: TCSETAW ioctl failed: %s\n", pmProgname,
osstrerror());
exit(1);
}
#endif
prompt = shortmsg;
while (sts == 1) {
putchar('\r');
for (i = 0; i < ncols-1; i++)
putchar(' ');
putchar('\r');
printf("%s", prompt);
fflush(stdout);
if (read(0, &c, 1) != 1) {
sts = 1;
goto reset_tty;
}
ch = (int)c;
switch(ch) {
case 'n': /* stop */
case 'q':
setio(1);
sts = 0;
break;
case 'y': /* page down */
case ' ':
neols = sts = 0;
break;
case '\n': /* step down */
neols = nrows;
sts = 0;
break;
default:
prompt = longmsg;
}
}
reset_tty:
#ifdef HAVE_TERMIO_H
if (ioctl(0, TCSETAW, &otty) < 0) {
fprintf(stderr, "%s: reset TCSETAW ioctl failed: %s\n", pmProgname,
osstrerror());
exit(1);
}
#endif
putchar('\r');
for (i = 0; i < ncols-1; i++)
putchar(' ');
putchar('\r');
fflush(stdout);
}
/*
* generic printing routine which can pause at end of a screenful.
* if this returns 1, the user has requested an end to this info,
* so the caller must always observe the pprintf return value.
*/
void
pprintf(char *format, ...)
{
char *p;
va_list args;
#ifdef TIOCGWINSZ
struct winsize geom;
#endif
static int first = 1;
if (first == 1) { /* first time thru */
first = 0;
#ifdef TIOCGWINSZ
ioctl(0, TIOCGWINSZ, &geom);
nrows = (geom.ws_row < MINROWS? MINROWS : geom.ws_row);
ncols = (geom.ws_col < MINCOLS? MINCOLS : geom.ws_col);
#else
nrows = MINROWS;
ncols = MINCOLS;
#endif
}
if (skiprest)
return;
va_start(args, format);
if (needscroll) {
/*
* use the fact that i know we never print more than MINROWS at once
* to figure out how many lines we've done before doing the vfprintf
*/
if (neols >= nrows-1) {
promptformore();
if (skiprest) {
va_end(args);
return;
}
}
for (p = format; *p != '\0'; p++)
if (*p == '\n') neols++;
vfprintf(stdout, format, args);
}
else
vfprintf(stdout, format, args);
va_end(args);
if (needresize) {
#ifdef HAVE_TIOCGWINSZ
ioctl(0, TIOCGWINSZ, &geom);
nrows = (geom.ws_row < MINROWS? MINROWS : geom.ws_row);
ncols = (geom.ws_col < MINCOLS? MINCOLS : geom.ws_col);
#ifdef PMIECONF_DEBUG
printf("debug - reset size: cols=%d rows=%d\n", ncols, nrows);
#endif
#endif
needresize = 0;
}
}
/* general error printing routine */
void
error(char *format, ...)
{
va_list args;
FILE *f;
if (skiprest)
return;
va_start(args, format);
if (needscroll) {
f = stdout;
fprintf(f, " Error - ");
}
else {
f = stderr;
fprintf(f, "%s: error - ", pmProgname);
}
vfprintf(f, format, args);
fprintf(f, "\n");
neols++;
va_end(args);
}
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