2 * Mini more implementation for busybox
5 * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
7 * Latest version blended together by Erik Andersen <andersen@lineo.com>,
8 * based on the original more implementation by Bruce, and code from the
9 * Debian boot-floppies team.
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
31 #include <sys/ioctl.h>
33 static const char more_usage[] = "more [file ...]\n";
35 /* ED: sparc termios is broken: revert back to old termio handling. */
36 #ifdef BB_FEATURE_USE_TERMIOS
39 # define USE_OLD_TERMIO
41 # define termios termio
42 # define stty(fd,argp) ioctl(fd,TCSETAF,argp)
45 # define stty(fd,argp) tcsetattr(fd,TCSANOW,argp)
49 struct termios initial_settings, new_settings;
51 void gotsig(int sig) {
52 stty(fileno(cin), &initial_settings);
53 fprintf(stdout, "\n");
60 #define TERMINAL_WIDTH 79 /* not 80 in case terminal has linefold bug */
61 #define TERMINAL_HEIGHT 24
64 #if defined BB_FEATURE_AUTOWIDTH
65 static int terminal_width = 0, terminal_height = 0;
67 #define terminal_width TERMINAL_WIDTH
68 #define terminal_height TERMINAL_HEIGHT
73 extern int more_main(int argc, char **argv)
75 int c, lines=0, input=0;
79 #ifdef BB_FEATURE_AUTOWIDTH
80 struct winsize win = {0,0};
86 if ( argc > 0 && (strcmp(*argv,"--help")==0 || strcmp(*argv,"-h")==0) ) {
94 file = fopen(*argv, "r");
100 fstat(fileno(file), &st);
102 #ifdef BB_FEATURE_USE_TERMIOS
103 cin = fopen("/dev/tty", "r");
105 cin = fopen("/dev/console", "r");
106 #ifdef USE_OLD_TERMIO
107 ioctl(fileno(cin),TCGETA,&initial_settings);
109 tcgetattr(fileno(cin),&initial_settings);
111 new_settings = initial_settings;
112 new_settings.c_lflag &= ~ICANON;
113 new_settings.c_lflag &= ~ECHO;
114 stty(fileno(cin), &new_settings);
116 #ifdef BB_FEATURE_AUTOWIDTH
117 ioctl(fileno(stdout), TIOCGWINSZ, &win);
119 terminal_height = win.ws_row - 2;
121 terminal_width = win.ws_col - 1;
124 (void) signal(SIGINT, gotsig);
125 (void) signal(SIGQUIT, gotsig);
126 (void) signal(SIGTERM, gotsig);
129 while ((c = getc(file)) != EOF) {
134 len = fprintf(stdout, "--More-- ");
136 len += fprintf(stdout, "(%d%% of %ld bytes)",
137 (int) (100*( (double) ftell(file) / (double) st.st_size )),
140 len += fprintf(stdout, "%s",
141 #ifdef BB_FEATURE_USE_TERMIOS
151 #ifdef BB_FEATURE_USE_TERMIOS
152 /* Erase the "More" message */
155 while(++len <= terminal_width)
168 /* increment by just one line if we are at
169 * the end of this line*/
173 if ( ++lines == terminal_height )
182 } while (--argc > 0);
184 #ifdef BB_FEATURE_USE_TERMIOS