1 /* vi: set sw=4 ts=4: */
3 * Mini more implementation for busybox
6 * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
8 * Latest version blended together by Erik Andersen <andersen@lineo.com>,
9 * based on the original more implementation by Bruce, and code from the
10 * Debian boot-floppies team.
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
32 #include <sys/ioctl.h>
34 static const char more_usage[] = "more [file ...]\n";
36 /* ED: sparc termios is broken: revert back to old termio handling. */
37 #ifdef BB_FEATURE_USE_TERMIOS
40 # define USE_OLD_TERMIO
42 # define termios termio
43 # define stty(fd,argp) ioctl(fd,TCSETAF,argp)
46 # define stty(fd,argp) tcsetattr(fd,TCSANOW,argp)
50 struct termios initial_settings, new_settings;
54 stty(fileno(cin), &initial_settings);
55 fprintf(stdout, "\n");
62 #define TERMINAL_WIDTH 79 /* not 80 in case terminal has linefold bug */
63 #define TERMINAL_HEIGHT 24
66 #if defined BB_FEATURE_AUTOWIDTH
67 static int terminal_width = 0, terminal_height = 0;
69 #define terminal_width TERMINAL_WIDTH
70 #define terminal_height TERMINAL_HEIGHT
75 extern int more_main(int argc, char **argv)
77 int c, lines = 0, input = 0;
82 #ifdef BB_FEATURE_AUTOWIDTH
83 struct winsize win = { 0, 0 };
90 && (strcmp(*argv, "--help") == 0 || strcmp(*argv, "-h") == 0)) {
97 file = fopen(*argv, "r");
103 fstat(fileno(file), &st);
105 #ifdef BB_FEATURE_USE_TERMIOS
106 cin = fopen("/dev/tty", "r");
108 cin = fopen("/dev/console", "r");
109 #ifdef USE_OLD_TERMIO
110 ioctl(fileno(cin), TCGETA, &initial_settings);
112 tcgetattr(fileno(cin), &initial_settings);
114 new_settings = initial_settings;
115 new_settings.c_lflag &= ~ICANON;
116 new_settings.c_lflag &= ~ECHO;
117 stty(fileno(cin), &new_settings);
119 #ifdef BB_FEATURE_AUTOWIDTH
120 ioctl(fileno(stdout), TIOCGWINSZ, &win);
122 terminal_height = win.ws_row - 2;
124 terminal_width = win.ws_col - 1;
127 (void) signal(SIGINT, gotsig);
128 (void) signal(SIGQUIT, gotsig);
129 (void) signal(SIGTERM, gotsig);
132 while ((c = getc(file)) != EOF) {
138 len = fprintf(stdout, "--More-- ");
140 len += fprintf(stdout, "(%d%% of %ld bytes)",
142 ((double) ftell(file) /
143 (double) st.st_size)),
146 len += fprintf(stdout, "%s",
147 #ifdef BB_FEATURE_USE_TERMIOS
157 #ifdef BB_FEATURE_USE_TERMIOS
158 /* Erase the "More" message */
161 while (++len <= terminal_width)
174 /* increment by just one line if we are at
175 * the end of this line*/
179 if (++lines == terminal_height)
188 } while (--argc > 0);
190 #ifdef BB_FEATURE_USE_TERMIOS