diff options
| -rw-r--r-- | console-tools/resize.c | 8 | ||||
| -rw-r--r-- | miscutils/less.c | 5 | ||||
| -rw-r--r-- | util-linux/more.c | 77 |
3 files changed, 43 insertions, 47 deletions
diff --git a/console-tools/resize.c b/console-tools/resize.c index 2fe5526..40a1b4e 100644 --- a/console-tools/resize.c +++ b/console-tools/resize.c @@ -9,6 +9,8 @@ /* no options, no getopt */ #include "busybox.h" +#define ESC "\033" + int resize_main(int argc, char **argv); int resize_main(int argc, char **argv) { @@ -27,10 +29,10 @@ int resize_main(int argc, char **argv) * get_cursor_pos [6n * restore_cursor_pos 8 */ - printf("\0337\033[r\033[999;999H\033[6n"); - scanf("\033[%hu;%huR", &w.ws_row, &w.ws_col); + printf(ESC"7" ESC"[r" ESC"[999;999H" ESC"[6n"); + scanf(ESC"[%hu;%huR", &w.ws_row, &w.ws_col); ret = ioctl(STDOUT_FILENO, TIOCSWINSZ, &w); - printf("\0338"); + printf(ESC"8"); tcsetattr(STDOUT_FILENO, TCSANOW, &old); if (ENABLE_FEATURE_RESIZE_PRINT) printf("COLUMNS=%d;LINES=%d;export COLUMNS LINES;\n", diff --git a/miscutils/less.c b/miscutils/less.c index 79732cc..a704155 100644 --- a/miscutils/less.c +++ b/miscutils/less.c @@ -1251,6 +1251,9 @@ int less_main(int argc, char **argv) * is not a tty and turns into cat. This makes sense. */ if (!isatty(STDOUT_FILENO)) return bb_cat(argv); + kbd_fd = open(CURRENT_TTY, O_RDONLY); + if (kbd_fd < 0) + return bb_cat(argv); if (!num_files) { if (isatty(STDIN_FILENO)) { @@ -1261,8 +1264,6 @@ int less_main(int argc, char **argv) } else filename = xstrdup(files[0]); - kbd_fd = xopen(CURRENT_TTY, O_RDONLY); - get_terminal_width_height(kbd_fd, &width, &max_displayed_line); /* 20: two tabstops + 4 */ if (width < 20 || max_displayed_line < 3) diff --git a/util-linux/more.c b/util-linux/more.c index 23ac526..2a38ef3 100644 --- a/util-linux/more.c +++ b/util-linux/more.c @@ -50,52 +50,46 @@ int more_main(int argc, char **argv) int terminal_width; int terminal_height; - argc--; argv++; + /* Another popular pager, most, detects when stdout + * is not a tty and turns into cat. This makes sense. */ + if (!isatty(STDOUT_FILENO)) + return bb_cat(argv); + cin = fopen(CURRENT_TTY, "r"); + if (!cin) + return bb_cat(argv); - cin = stdin; - /* use input from terminal unless we do "more >outfile" */ - if (isatty(STDOUT_FILENO)) { - cin = fopen(CURRENT_TTY, "r"); - /* Huh? why not just fail if "/dev/tty" isn't available? - * If user has no ctty, it's his own problem */ - if (!cin) - cin = xfopen(DEV_CONSOLE, "r"); - please_display_more_prompt = 2; #if ENABLE_FEATURE_USE_TERMIOS - cin_fileno = fileno(cin); - getTermSettings(cin_fileno, &initial_settings); - new_settings = initial_settings; - new_settings.c_lflag &= ~ICANON; - new_settings.c_lflag &= ~ECHO; - new_settings.c_cc[VMIN] = 1; - new_settings.c_cc[VTIME] = 0; - setTermSettings(cin_fileno, &new_settings); - atexit(set_tty_to_initial_mode); - signal(SIGINT, gotsig); - signal(SIGQUIT, gotsig); - signal(SIGTERM, gotsig); + cin_fileno = fileno(cin); + getTermSettings(cin_fileno, &initial_settings); + new_settings = initial_settings; + new_settings.c_lflag &= ~ICANON; + new_settings.c_lflag &= ~ECHO; + new_settings.c_cc[VMIN] = 1; + new_settings.c_cc[VTIME] = 0; + setTermSettings(cin_fileno, &new_settings); + atexit(set_tty_to_initial_mode); + signal(SIGINT, gotsig); + signal(SIGQUIT, gotsig); + signal(SIGTERM, gotsig); #endif - } + please_display_more_prompt = 2; do { file = stdin; - if (argc != 0) { + if (*argv) { file = fopen_or_warn(*argv, "r"); if (!file) - goto loop; + continue; } - st.st_size = 0; fstat(fileno(file), &st); please_display_more_prompt &= ~1; - + /* never returns w, h <= 1 */ get_terminal_width_height(fileno(cin), &terminal_width, &terminal_height); - if (terminal_height > 4) - terminal_height -= 2; - if (terminal_width > 0) - terminal_width -= 1; + terminal_width -= 1; + terminal_height -= 1; len = 0; lines = 0; @@ -104,7 +98,7 @@ int more_main(int argc, char **argv) if ((please_display_more_prompt & 3) == 3) { len = printf("--More-- "); - if (file != stdin && st.st_size > 0) { + if (/*file != stdin &&*/ st.st_size > 0) { len += printf("(%d%% of %"OFF_FMT"d bytes)", (int) (ftello(file)*100 / st.st_size), st.st_size); @@ -123,7 +117,9 @@ int more_main(int argc, char **argv) printf("\r%*s\r", len, ""); len = 0; lines = 0; - page_height = terminal_height; + /* Bottom line on page will become top line + * after one page forward. Thus -1: */ + page_height = terminal_height - 1; please_display_more_prompt &= ~1; if (input == 'q') @@ -151,12 +147,9 @@ int more_main(int argc, char **argv) int quot, rem; quot = len / terminal_width; rem = len - (quot * terminal_width); - if (quot) { - if (rem) - page_height -= quot; - else - page_height -= (quot - 1); - } + page_height -= (quot - 1); + if (rem) + page_height--; } if (++lines >= page_height) { please_display_more_prompt |= 1; @@ -168,13 +161,13 @@ int more_main(int argc, char **argv) * key other than a return is hit, scroll by one page */ putc(c, stdout); + /* My small mind cannot fathom tabs, backspaces, + * and UTF-8 */ len++; } fclose(file); fflush(stdout); - loop: - argv++; - } while (--argc > 0); + } while (*argv && *++argv); end: return 0; } |