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
41 # define termios termio
42 # define setTermSettings(fd,argp) ioctl(fd,TCSETAF,argp)
43 # define getTermSettings(fd,argp) ioctl(fd,TCGETA,argp)
46 # define setTermSettings(fd,argp) tcsetattr(fd,TCSANOW,argp)
47 # define getTermSettings(fd,argp) tcgetattr(fd, argp);
51 struct termios initial_settings, new_settings;
55 setTermSettings(fileno(cin), &initial_settings);
56 fprintf(stdout, "\n");
63 #define TERMINAL_WIDTH 79 /* not 80 in case terminal has linefold bug */
64 #define TERMINAL_HEIGHT 24
67 #if defined BB_FEATURE_AUTOWIDTH
68 static int terminal_width = 0, terminal_height = 0;
70 #define terminal_width TERMINAL_WIDTH
71 #define terminal_height TERMINAL_HEIGHT
76 extern int more_main(int argc, char **argv)
78 int c, lines = 0, input = 0;
83 #ifdef BB_FEATURE_AUTOWIDTH
84 struct winsize win = { 0, 0 };
91 && (strcmp(*argv, "--help") == 0 || strcmp(*argv, "-h") == 0)) {
98 file = fopen(*argv, "r");
104 fstat(fileno(file), &st);
106 #ifdef BB_FEATURE_USE_TERMIOS
107 cin = fopen("/dev/tty", "r");
109 cin = fopen("/dev/console", "r");
110 getTermSettings(fileno(cin), &initial_settings);
111 new_settings = initial_settings;
112 new_settings.c_cc[VMIN] = 1;
113 new_settings.c_cc[VTIME] = 0;
114 new_settings.c_lflag &= ~ICANON;
115 new_settings.c_lflag &= ~ECHO;
116 setTermSettings(fileno(cin), &new_settings);
118 #ifdef BB_FEATURE_AUTOWIDTH
119 ioctl(fileno(stdout), TIOCGWINSZ, &win);
121 terminal_height = win.ws_row - 2;
123 terminal_width = win.ws_col - 1;
126 (void) signal(SIGINT, gotsig);
127 (void) signal(SIGQUIT, gotsig);
128 (void) signal(SIGTERM, gotsig);
131 while ((c = getc(file)) != EOF) {
137 len = fprintf(stdout, "--More-- ");
139 len += fprintf(stdout, "(%d%% of %ld bytes)",
141 ((double) ftell(file) /
142 (double) st.st_size)),
145 len += fprintf(stdout, "%s",
146 #ifdef BB_FEATURE_USE_TERMIOS
156 #ifdef BB_FEATURE_USE_TERMIOS
157 /* Erase the "More" message */
160 while (++len <= terminal_width)
173 /* increment by just one line if we are at
174 * the end of this line*/
178 if (++lines == terminal_height)
187 } while (--argc > 0);
189 #ifdef BB_FEATURE_USE_TERMIOS