Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Mini more implementation for busybox |
| 3 | * |
| 4 | * Copyright (C) 1998 by Erik Andersen <andersee@debian.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | * |
| 20 | */ |
| 21 | |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 22 | |
| 23 | /* Turning this off makes things a bit smaller (and less pretty) */ |
| 24 | #define BB_MORE_TERM |
| 25 | |
| 26 | |
| 27 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 28 | #include "internal.h" |
| 29 | #include <stdio.h> |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 30 | #include <signal.h> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 31 | |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 32 | |
Eric Andersen | e77ae3a | 1999-10-19 20:03:34 +0000 | [diff] [blame] | 33 | static const char more_usage[] = "[file ...]"; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 34 | |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 35 | |
| 36 | #ifdef BB_MORE_TERM |
| 37 | #include <termios.h> |
| 38 | #include <signal.h> |
| 39 | #include <sys/ioctl.h> |
| 40 | |
| 41 | FILE *cin; |
| 42 | struct termios initial_settings, new_settings; |
| 43 | |
| 44 | void gotsig(int sig) { |
| 45 | tcsetattr(fileno(cin), TCSANOW, &initial_settings); |
| 46 | exit( TRUE); |
| 47 | } |
| 48 | #endif |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 49 | |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 50 | extern int more_main(int argc, char **argv) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 51 | { |
Eric Andersen | 21943ce | 1999-10-13 18:04:51 +0000 | [diff] [blame] | 52 | int c, lines=0, input=0; |
Eric Andersen | 9d3aba7 | 1999-10-06 09:04:55 +0000 | [diff] [blame] | 53 | int next_page=0, rows = 24; |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 54 | #ifdef BB_MORE_TERM |
Eric Andersen | 21943ce | 1999-10-13 18:04:51 +0000 | [diff] [blame] | 55 | int cols=79; |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 56 | struct winsize win; |
Eric Andersen | 9d3aba7 | 1999-10-06 09:04:55 +0000 | [diff] [blame] | 57 | #endif |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 58 | struct stat st; |
| 59 | FILE *file = stdin; |
| 60 | |
| 61 | if ( strcmp(*argv,"--help")==0 || strcmp(*argv,"-h")==0 ) { |
Eric Andersen | b0e9a70 | 1999-10-18 22:28:26 +0000 | [diff] [blame] | 62 | usage (more_usage); |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 63 | } |
| 64 | argc--; |
| 65 | argv++; |
| 66 | |
| 67 | while (argc-- > 0) { |
Eric Andersen | 9d3aba7 | 1999-10-06 09:04:55 +0000 | [diff] [blame] | 68 | file = fopen(*argv, "r"); |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 69 | if (file == NULL) { |
Eric Andersen | 9d3aba7 | 1999-10-06 09:04:55 +0000 | [diff] [blame] | 70 | perror("Can't open file"); |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 71 | exit(FALSE); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 72 | } |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 73 | fstat(fileno(file), &st); |
Eric Andersen | 9d3aba7 | 1999-10-06 09:04:55 +0000 | [diff] [blame] | 74 | fprintf(stderr, "hi\n"); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 75 | |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 76 | #ifdef BB_MORE_TERM |
| 77 | cin = fopen("/dev/tty", "r"); |
| 78 | tcgetattr(fileno(cin),&initial_settings); |
| 79 | new_settings = initial_settings; |
| 80 | new_settings.c_lflag &= ~ICANON; |
| 81 | new_settings.c_lflag &= ~ECHO; |
| 82 | tcsetattr(fileno(cin), TCSANOW, &new_settings); |
| 83 | |
| 84 | (void) signal(SIGINT, gotsig); |
| 85 | |
| 86 | ioctl(STDOUT_FILENO, TIOCGWINSZ, &win); |
| 87 | if (win.ws_row > 4) rows = win.ws_row - 2; |
| 88 | if (win.ws_col > 0) cols = win.ws_col - 1; |
| 89 | |
| 90 | |
| 91 | #endif |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 92 | while ((c = getc(file)) != EOF) { |
| 93 | if ( next_page ) { |
| 94 | int len=0; |
| 95 | next_page = 0; |
| 96 | lines=0; |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 97 | len = fprintf(stdout, "--More-- (%d%% of %ld bytes)%s", |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 98 | (int) (100*( (double) ftell(file) / (double) st.st_size )), |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 99 | st.st_size, |
| 100 | #ifdef BB_MORE_TERM |
| 101 | "" |
| 102 | #else |
| 103 | "\n" |
| 104 | #endif |
| 105 | ); |
| 106 | |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 107 | fflush(stdout); |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 108 | input = getc( stdin); |
| 109 | |
| 110 | #ifdef BB_MORE_TERM |
| 111 | /* Erase the "More" message */ |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 112 | while(len-- > 0) |
| 113 | putc('\b', stdout); |
| 114 | while(len++ < cols) |
Eric Andersen | 9d3aba7 | 1999-10-06 09:04:55 +0000 | [diff] [blame] | 115 | putc(' ', stdout); |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 116 | while(len-- > 0) |
| 117 | putc('\b', stdout); |
| 118 | fflush(stdout); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 119 | #endif |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 120 | |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 121 | } |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 122 | if (input=='q') |
| 123 | goto end; |
| 124 | if (input==' ' && c == '\n' ) |
| 125 | next_page = 1; |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 126 | if ( c == '\n' && ++lines == (rows + 1) ) |
| 127 | next_page = 1; |
| 128 | putc(c, stdout); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 129 | } |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 130 | fclose(file); |
| 131 | fflush(stdout); |
| 132 | |
| 133 | argc--; |
| 134 | argv++; |
| 135 | } |
Eric Andersen | 3cf52d1 | 1999-10-12 22:26:06 +0000 | [diff] [blame] | 136 | end: |
| 137 | #ifdef BB_MORE_TERM |
| 138 | gotsig(0); |
| 139 | #endif |
| 140 | exit(TRUE); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 141 | } |
Eric Andersen | 4bea32a | 1999-10-06 00:30:51 +0000 | [diff] [blame] | 142 | |