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/*
* Mini more implementation for busybox
*
* Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/* Turning this off makes things a bit smaller (and less pretty) */
#define BB_MORE_TERM
#include "internal.h"
#include <stdio.h>
#include <fcntl.h>
#include <signal.h>
static const char more_usage[] = "[file ...]";
/* ED: sparc termios is broken: revert back to old termio handling. */
#ifdef BB_MORE_TERM
#if defined (__sparc__)
# define USE_OLD_TERMIO
# include <termio.h>
# include <sys/ioctl.h>
# define termios termio
# define stty(fd,argp) ioctl(fd,TCSETAF,argp)
#else
# include <termios.h>
# define stty(fd,argp) tcsetattr(fd,TCSANOW,argp)
#endif
FILE *cin;
struct termios initial_settings, new_settings;
void gotsig(int sig) {
stty(fileno(cin), &initial_settings);
exit( TRUE);
}
#endif
extern int more_main(int argc, char **argv)
{
int c, lines=0, input=0;
int next_page=0;
struct stat st;
FILE *file;
if ( strcmp(*argv,"--help")==0 || strcmp(*argv,"-h")==0 ) {
usage (more_usage);
}
argc--;
argv++;
while (argc >= 0) {
if (argc==0) {
file = stdin;
}
else
file = fopen(*argv, "r");
if (file == NULL) {
perror(*argv);
exit(FALSE);
}
fstat(fileno(file), &st);
#ifdef BB_MORE_TERM
cin = fopen("/dev/tty", "r");
if (!cin)
cin = fopen("/dev/console", "r");
#ifdef USE_OLD_TERMIO
ioctl(fileno(cin),TCGETA,&initial_settings);
#else
tcgetattr(fileno(cin),&initial_settings);
#endif
new_settings = initial_settings;
new_settings.c_lflag &= ~ICANON;
new_settings.c_lflag &= ~ECHO;
stty(fileno(cin), &new_settings);
(void) signal(SIGINT, gotsig);
#endif
while ((c = getc(file)) != EOF) {
if ( next_page ) {
int len=0;
next_page = 0;
lines=0;
len = fprintf(stdout, "--More-- ");
if (file != stdin) {
len += fprintf(stdout, "(%d%% of %ld bytes)",
(int) (100*( (double) ftell(file) / (double) st.st_size )),
st.st_size);
}
len += fprintf(stdout, "%s",
#ifdef BB_MORE_TERM
""
#else
"\n"
#endif
);
fflush(stdout);
input = getc( cin);
#ifdef BB_MORE_TERM
/* Erase the "More" message */
while(len-- > 0)
putc('\b', stdout);
while(len++ < 79)
putc(' ', stdout);
while(len-- > 0)
putc('\b', stdout);
fflush(stdout);
#endif
}
if (input=='q')
goto end;
if (input==' ' && c == '\n' )
next_page = 1;
if ( c == '\n' && ++lines == 24 )
next_page = 1;
putc(c, stdout);
}
fclose(file);
fflush(stdout);
argc--;
argv++;
}
end:
#ifdef BB_MORE_TERM
gotsig(0);
#endif
exit(TRUE);
}
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