Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Mini more implementation for busybox |
| 3 | * |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 4 | * |
| 5 | * Copyright (C) 1999 by Lineo, inc. |
| 6 | * Blended by Erik Andersen <andersen@lineo.com>, <andersee@debian.org> |
| 7 | * based on the original more implementation and code from the Debian |
| 8 | * boot-floppies team. |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 18 | * General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 23 | * |
| 24 | */ |
| 25 | |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 26 | |
| 27 | /* Turning this off makes things a bit smaller (and less pretty) */ |
| 28 | #define BB_MORE_TERM |
| 29 | |
| 30 | |
| 31 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 32 | #include "internal.h" |
| 33 | #include <stdio.h> |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 34 | #include <fcntl.h> |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 35 | #include <signal.h> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 36 | |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 37 | |
Eric Andersen | e77ae3a | 1999-10-19 20:03:34 +0000 | [diff] [blame] | 38 | static const char more_usage[] = "[file ...]"; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 39 | |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 40 | |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 41 | /* ED: sparc termios is broken: revert back to old termio handling. */ |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 42 | #ifdef BB_MORE_TERM |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 43 | |
Eric Andersen | fbb39c8 | 1999-11-08 17:00:52 +0000 | [diff] [blame^] | 44 | #if #cpu(sparc) |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 45 | # define USE_OLD_TERMIO |
| 46 | # include <termio.h> |
| 47 | # include <sys/ioctl.h> |
| 48 | # define termios termio |
| 49 | # define stty(fd,argp) ioctl(fd,TCSETAF,argp) |
| 50 | #else |
| 51 | # include <termios.h> |
| 52 | # define stty(fd,argp) tcsetattr(fd,TCSANOW,argp) |
| 53 | #endif |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 54 | |
| 55 | FILE *cin; |
| 56 | struct termios initial_settings, new_settings; |
| 57 | |
| 58 | void gotsig(int sig) { |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 59 | stty(fileno(cin), &initial_settings); |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 60 | exit( TRUE); |
| 61 | } |
| 62 | #endif |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 63 | |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 64 | extern int more_main(int argc, char **argv) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 65 | { |
Eric Andersen | 21943ce | 1999-10-13 18:04:51 +0000 | [diff] [blame] | 66 | int c, lines=0, input=0; |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 67 | int next_page=0; |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 68 | struct stat st; |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 69 | FILE *file; |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 70 | |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 71 | argc--; |
| 72 | argv++; |
| 73 | |
Eric Andersen | fbb39c8 | 1999-11-08 17:00:52 +0000 | [diff] [blame^] | 74 | if ( argc > 0 && (strcmp(*argv,"--help")==0 || strcmp(*argv,"-h")==0) ) { |
| 75 | usage (more_usage); |
| 76 | } |
| 77 | do { |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 78 | if (argc==0) { |
| 79 | file = stdin; |
| 80 | } |
| 81 | else |
Eric Andersen | 9d3aba7 | 1999-10-06 09:04:55 +0000 | [diff] [blame] | 82 | file = fopen(*argv, "r"); |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 83 | |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 84 | if (file == NULL) { |
Eric Andersen | ef8b6c7 | 1999-10-20 08:05:35 +0000 | [diff] [blame] | 85 | perror(*argv); |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 86 | exit(FALSE); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 87 | } |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 88 | fstat(fileno(file), &st); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 89 | |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 90 | #ifdef BB_MORE_TERM |
| 91 | cin = fopen("/dev/tty", "r"); |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 92 | if (!cin) |
| 93 | cin = fopen("/dev/console", "r"); |
| 94 | #ifdef USE_OLD_TERMIO |
| 95 | ioctl(fileno(cin),TCGETA,&initial_settings); |
| 96 | #else |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 97 | tcgetattr(fileno(cin),&initial_settings); |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 98 | #endif |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 99 | new_settings = initial_settings; |
| 100 | new_settings.c_lflag &= ~ICANON; |
| 101 | new_settings.c_lflag &= ~ECHO; |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 102 | stty(fileno(cin), &new_settings); |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 103 | |
| 104 | (void) signal(SIGINT, gotsig); |
Eric Andersen | fbb39c8 | 1999-11-08 17:00:52 +0000 | [diff] [blame^] | 105 | (void) signal(SIGQUIT, gotsig); |
| 106 | (void) signal(SIGTERM, gotsig); |
| 107 | |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 108 | |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 109 | #endif |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 110 | while ((c = getc(file)) != EOF) { |
| 111 | if ( next_page ) { |
| 112 | int len=0; |
| 113 | next_page = 0; |
| 114 | lines=0; |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 115 | len = fprintf(stdout, "--More-- "); |
| 116 | if (file != stdin) { |
| 117 | len += fprintf(stdout, "(%d%% of %ld bytes)", |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 118 | (int) (100*( (double) ftell(file) / (double) st.st_size )), |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 119 | st.st_size); |
| 120 | } |
| 121 | len += fprintf(stdout, "%s", |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 122 | #ifdef BB_MORE_TERM |
| 123 | "" |
| 124 | #else |
| 125 | "\n" |
| 126 | #endif |
| 127 | ); |
| 128 | |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 129 | fflush(stdout); |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 130 | input = getc( cin); |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 131 | |
| 132 | #ifdef BB_MORE_TERM |
| 133 | /* Erase the "More" message */ |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 134 | while(len-- > 0) |
| 135 | putc('\b', stdout); |
Eric Andersen | f5a3838 | 1999-10-19 22:26:25 +0000 | [diff] [blame] | 136 | while(len++ < 79) |
Eric Andersen | 9d3aba7 | 1999-10-06 09:04:55 +0000 | [diff] [blame] | 137 | putc(' ', stdout); |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 138 | while(len-- > 0) |
| 139 | putc('\b', stdout); |
| 140 | fflush(stdout); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 141 | #endif |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 142 | |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 143 | } |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 144 | if (input=='q') |
| 145 | goto end; |
Eric Andersen | fbb39c8 | 1999-11-08 17:00:52 +0000 | [diff] [blame^] | 146 | if (input=='\n' && c == '\n' ) |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 147 | next_page = 1; |
Eric Andersen | fbb39c8 | 1999-11-08 17:00:52 +0000 | [diff] [blame^] | 148 | if ( c == ' ' && ++lines == 24 ) |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 149 | next_page = 1; |
| 150 | putc(c, stdout); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 151 | } |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 152 | fclose(file); |
| 153 | fflush(stdout); |
| 154 | |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 155 | argv++; |
Eric Andersen | fbb39c8 | 1999-11-08 17:00:52 +0000 | [diff] [blame^] | 156 | } while (--argc > 0); |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 157 | end: |
| 158 | #ifdef BB_MORE_TERM |
| 159 | gotsig(0); |
| 160 | #endif |
| 161 | exit(TRUE); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 162 | } |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 163 | |