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| author | Eric Andersen <andersen@codepoet.org> | 1999-10-06 00:30:51 +0000 |
|---|---|---|
| committer | Eric Andersen <andersen@codepoet.org> | 1999-10-06 00:30:51 +0000 |
| commit | 4bea32abb5d25e3b83047c22fd3f4e8fae2479cd (patch) | |
| tree | c8aad7a8b8c573c2421b7fb3e58fdd00a3c1fe9b /util-linux | |
| parent | 2b69c40e8060934c115922c012737bd471956f09 (diff) | |
| download | busybox-w32-4bea32abb5d25e3b83047c22fd3f4e8fae2479cd.tar.gz busybox-w32-4bea32abb5d25e3b83047c22fd3f4e8fae2479cd.tar.bz2 busybox-w32-4bea32abb5d25e3b83047c22fd3f4e8fae2479cd.zip | |
latest and greatest.
Diffstat (limited to 'util-linux')
| -rw-r--r-- | util-linux/more.c | 169 |
1 files changed, 72 insertions, 97 deletions
diff --git a/util-linux/more.c b/util-linux/more.c index 65409999b..2ea709278 100644 --- a/util-linux/more.c +++ b/util-linux/more.c | |||
| @@ -1,110 +1,85 @@ | |||
| 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 | |||
| 1 | #include "internal.h" | 22 | #include "internal.h" |
| 2 | #include <stdio.h> | 23 | #include <stdio.h> |
| 3 | #include <sys/types.h> | 24 | #include <signal.h> |
| 4 | #include <sys/stat.h> | ||
| 5 | #include <sys/ioctl.h> | ||
| 6 | #include <fcntl.h> | ||
| 7 | |||
| 8 | #define BB_MORE_TERM | ||
| 9 | |||
| 10 | #ifdef BB_MORE_TERM | ||
| 11 | #include <termios.h> | ||
| 12 | #include <signal.h> | ||
| 13 | 25 | ||
| 14 | FILE *cin; | 26 | const char more_usage[] = "[file ...]"; |
| 15 | struct termios initial_settings, new_settings; | ||
| 16 | 27 | ||
| 17 | void gotsig(int sig) { | ||
| 18 | tcsetattr(fileno(cin), TCSANOW, &initial_settings); | ||
| 19 | exit(0); | ||
| 20 | } | ||
| 21 | #endif | ||
| 22 | 28 | ||
| 23 | const char more_usage[] = "more [file]\n" | ||
| 24 | "\n" | ||
| 25 | "\tDisplays a file, one page at a time.\n" | ||
| 26 | "\tIf there are no arguments, the standard input is displayed.\n"; | ||
| 27 | 29 | ||
| 28 | extern int | 30 | extern int more_main(int argc, char **argv) |
| 29 | more_fn(const struct FileInfo * i) | ||
| 30 | { | 31 | { |
| 31 | FILE * f = stdin; | 32 | int c, lines=0; |
| 32 | int c; | 33 | int next_page=0, rows = 24, cols=79; |
| 33 | int lines = 0, tlines = 0; | 34 | struct stat st; |
| 34 | int next_page = 0; | 35 | FILE *file = stdin; |
| 35 | int rows = 24, cols = 79; | ||
| 36 | #ifdef BB_MORE_TERM | ||
| 37 | long sizeb = 0; | ||
| 38 | struct stat st; | ||
| 39 | struct winsize win; | ||
| 40 | #endif | ||
| 41 | |||
| 42 | if ( i ) { | ||
| 43 | if (! (f = fopen(i->source, "r") )) { | ||
| 44 | name_and_error(i->source); | ||
| 45 | return 1; | ||
| 46 | } | ||
| 47 | fstat(fileno(f), &st); | ||
| 48 | sizeb = st.st_size / 100; | ||
| 49 | } | ||
| 50 | |||
| 51 | #ifdef BB_MORE_TERM | ||
| 52 | cin = fopen("/dev/tty", "r"); | ||
| 53 | tcgetattr(fileno(cin),&initial_settings); | ||
| 54 | new_settings = initial_settings; | ||
| 55 | new_settings.c_lflag &= ~ICANON; | ||
| 56 | new_settings.c_lflag &= ~ECHO; | ||
| 57 | tcsetattr(fileno(cin), TCSANOW, &new_settings); | ||
| 58 | |||
| 59 | (void) signal(SIGINT, gotsig); | ||
| 60 | 36 | ||
| 61 | ioctl(STDOUT_FILENO, TIOCGWINSZ, &win); | 37 | if ( strcmp(*argv,"--help")==0 || strcmp(*argv,"-h")==0 ) { |
| 62 | if (win.ws_row > 4) rows = win.ws_row - 2; | 38 | fprintf(stderr, "Usage: %s %s", *argv, more_usage); |
| 63 | if (win.ws_col > 0) cols = win.ws_col - 1; | 39 | return(FALSE); |
| 40 | } | ||
| 41 | argc--; | ||
| 42 | argv++; | ||
| 64 | 43 | ||
| 44 | while (argc-- > 0) { | ||
| 45 | file = fopen(*argv, "r"); | ||
| 46 | if (file == NULL) { | ||
| 47 | perror(*argv); | ||
| 48 | return(FALSE); | ||
| 49 | } | ||
| 50 | fstat(fileno(file), &st); | ||
| 65 | 51 | ||
| 52 | while ((c = getc(file)) != EOF) { | ||
| 53 | if ( next_page ) { | ||
| 54 | int len=0; | ||
| 55 | next_page = 0; | ||
| 56 | lines=0; | ||
| 57 | len = fprintf(stdout, "--More-- (%d%% of %ld bytes)\n", | ||
| 58 | (int) (100*( (double) ftell(file) / (double) st.st_size )), | ||
| 59 | st.st_size); | ||
| 60 | fflush(stdout); | ||
| 61 | getc( stdin); | ||
| 62 | #if 0 | ||
| 63 | while(len-- > 0) | ||
| 64 | putc('\b', stdout); | ||
| 65 | while(len++ < cols) | ||
| 66 | putc('8', stdout); | ||
| 67 | while(len-- > 0) | ||
| 68 | putc('\b', stdout); | ||
| 69 | fflush(stdout); | ||
| 66 | #endif | 70 | #endif |
| 67 | 71 | } | |
| 68 | while ( (c = getc(f)) != EOF ) { | 72 | if ( c == '\n' && ++lines == (rows + 1) ) |
| 69 | if ( next_page ) { | 73 | next_page = 1; |
| 70 | char garbage; | 74 | putc(c, stdout); |
| 71 | int len; | ||
| 72 | tlines += lines; | ||
| 73 | lines = 0; | ||
| 74 | next_page = 0; //Percentage is based on bytes, not lines. | ||
| 75 | if ( i && i->source ) //It is not very acurate, but still useful. | ||
| 76 | len = printf("%s - %%%2ld - line: %d", i->source, (ftell(f) - sizeb - sizeb) / sizeb, tlines); | ||
| 77 | else | ||
| 78 | len = printf("line: %d", tlines); | ||
| 79 | |||
| 80 | fflush(stdout); | ||
| 81 | #ifndef BB_MORE_TERM | ||
| 82 | read(2, &garbage, 1); | ||
| 83 | #else | ||
| 84 | do { | ||
| 85 | fread(&garbage, 1, 1, cin); | ||
| 86 | } while ((garbage != ' ') && (garbage != '\n')); | ||
| 87 | |||
| 88 | if (garbage == '\n') { | ||
| 89 | lines = rows; | ||
| 90 | tlines -= rows; | ||
| 91 | } | ||
| 92 | garbage = 0; | ||
| 93 | //clear line, since tabs don't overwrite. | ||
| 94 | while(len-- > 0) putchar('\b'); | ||
| 95 | while(len++ < cols) putchar(' '); | ||
| 96 | while(len-- > 0) putchar('\b'); | ||
| 97 | fflush(stdout); | ||
| 98 | #endif | ||
| 99 | } | ||
| 100 | putchar(c); | ||
| 101 | if ( c == '\n' && ++lines == (rows + 1) ) | ||
| 102 | next_page = 1; | ||
| 103 | } | 75 | } |
| 104 | if ( f != stdin ) | 76 | fclose(file); |
| 105 | fclose(f); | 77 | fflush(stdout); |
| 106 | #ifdef BB_MORE_TERM | 78 | |
| 107 | gotsig(0); | 79 | argc--; |
| 108 | #endif | 80 | argv++; |
| 109 | return 0; | 81 | } |
| 82 | return(TRUE); | ||
| 110 | } | 83 | } |
| 84 | |||
| 85 | |||
