hush/more.c
Eric Andersen 9d3aba7b37 more stuff
1999-10-06 09:04:55 +00:00

91 lines
2.1 KiB
C

/*
* 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
*
*/
#include "internal.h"
#include <stdio.h>
#include <signal.h>
const char more_usage[] = "[file ...]";
//#define ERASE_STUFF
extern int more_main(int argc, char **argv)
{
int c, lines=0;
int next_page=0, rows = 24;
#ifdef ERASE_STUFF
int cols=79;
#endif
struct stat st;
FILE *file = stdin;
if ( strcmp(*argv,"--help")==0 || strcmp(*argv,"-h")==0 ) {
fprintf(stderr, "Usage: %s %s", *argv, more_usage);
return(FALSE);
}
argc--;
argv++;
while (argc-- > 0) {
file = fopen(*argv, "r");
if (file == NULL) {
perror("Can't open file");
return(FALSE);
}
fstat(fileno(file), &st);
fprintf(stderr, "hi\n");
while ((c = getc(file)) != EOF) {
if ( next_page ) {
int len=0;
next_page = 0;
lines=0;
len = fprintf(stdout, "--More-- (%d%% of %ld bytes)",
(int) (100*( (double) ftell(file) / (double) st.st_size )),
st.st_size);
fflush(stdout);
getc( stdin);
#ifdef ERASE_STUFF
/* Try to erase the "More" message */
while(len-- > 0)
putc('\b', stdout);
while(len++ < cols)
putc(' ', stdout);
while(len-- > 0)
putc('\b', stdout);
fflush(stdout);
#endif
}
if ( c == '\n' && ++lines == (rows + 1) )
next_page = 1;
putc(c, stdout);
}
fclose(file);
fflush(stdout);
argc--;
argv++;
}
return(TRUE);
}