diff options
Diffstat (limited to 'util-linux/more.c')
| -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 6540999..2ea7092 100644 --- a/util-linux/more.c +++ b/util-linux/more.c @@ -1,110 +1,85 @@ +/* + * Mini more implementation for busybox + * + * Copyright (C) 1998 by Erik Andersen <andersee@debian.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + #include "internal.h" #include <stdio.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/ioctl.h> -#include <fcntl.h> - -#define BB_MORE_TERM - -#ifdef BB_MORE_TERM - #include <termios.h> - #include <signal.h> +#include <signal.h> - FILE *cin; - struct termios initial_settings, new_settings; +const char more_usage[] = "[file ...]"; - void gotsig(int sig) { - tcsetattr(fileno(cin), TCSANOW, &initial_settings); - exit(0); - } -#endif -const char more_usage[] = "more [file]\n" -"\n" -"\tDisplays a file, one page at a time.\n" -"\tIf there are no arguments, the standard input is displayed.\n"; -extern int -more_fn(const struct FileInfo * i) +extern int more_main(int argc, char **argv) { - FILE * f = stdin; - int c; - int lines = 0, tlines = 0; - int next_page = 0; - int rows = 24, cols = 79; -#ifdef BB_MORE_TERM - long sizeb = 0; - struct stat st; - struct winsize win; -#endif - - if ( i ) { - if (! (f = fopen(i->source, "r") )) { - name_and_error(i->source); - return 1; - } - fstat(fileno(f), &st); - sizeb = st.st_size / 100; - } - -#ifdef BB_MORE_TERM - cin = fopen("/dev/tty", "r"); - tcgetattr(fileno(cin),&initial_settings); - new_settings = initial_settings; - new_settings.c_lflag &= ~ICANON; - new_settings.c_lflag &= ~ECHO; - tcsetattr(fileno(cin), TCSANOW, &new_settings); - - (void) signal(SIGINT, gotsig); + int c, lines=0; + int next_page=0, rows = 24, cols=79; + struct stat st; + FILE *file = stdin; - ioctl(STDOUT_FILENO, TIOCGWINSZ, &win); - if (win.ws_row > 4) rows = win.ws_row - 2; - if (win.ws_col > 0) cols = win.ws_col - 1; + if ( strcmp(*argv,"--help")==0 || strcmp(*argv,"-h")==0 ) { + fprintf(stderr, "Usage: %s %s", *argv, more_usage); + return(FALSE); + } + argc--; + argv++; + while (argc-- > 0) { + file = fopen(*argv, "r"); + if (file == NULL) { + perror(*argv); + return(FALSE); + } + fstat(fileno(file), &st); + while ((c = getc(file)) != EOF) { + if ( next_page ) { + int len=0; + next_page = 0; + lines=0; + len = fprintf(stdout, "--More-- (%d%% of %ld bytes)\n", + (int) (100*( (double) ftell(file) / (double) st.st_size )), + st.st_size); + fflush(stdout); + getc( stdin); +#if 0 + while(len-- > 0) + putc('\b', stdout); + while(len++ < cols) + putc('8', stdout); + while(len-- > 0) + putc('\b', stdout); + fflush(stdout); #endif - - while ( (c = getc(f)) != EOF ) { - if ( next_page ) { - char garbage; - int len; - tlines += lines; - lines = 0; - next_page = 0; //Percentage is based on bytes, not lines. - if ( i && i->source ) //It is not very acurate, but still useful. - len = printf("%s - %%%2ld - line: %d", i->source, (ftell(f) - sizeb - sizeb) / sizeb, tlines); - else - len = printf("line: %d", tlines); - - fflush(stdout); -#ifndef BB_MORE_TERM - read(2, &garbage, 1); -#else - do { - fread(&garbage, 1, 1, cin); - } while ((garbage != ' ') && (garbage != '\n')); - - if (garbage == '\n') { - lines = rows; - tlines -= rows; - } - garbage = 0; - //clear line, since tabs don't overwrite. - while(len-- > 0) putchar('\b'); - while(len++ < cols) putchar(' '); - while(len-- > 0) putchar('\b'); - fflush(stdout); -#endif - } - putchar(c); - if ( c == '\n' && ++lines == (rows + 1) ) - next_page = 1; + } + if ( c == '\n' && ++lines == (rows + 1) ) + next_page = 1; + putc(c, stdout); } - if ( f != stdin ) - fclose(f); -#ifdef BB_MORE_TERM - gotsig(0); -#endif - return 0; + fclose(file); + fflush(stdout); + + argc--; + argv++; + } + return(TRUE); } + + |