This commit was manufactured by cvs2svn to create tag 'busybox_1_00'.

1 files changed, 211 insertions, 0 deletions

diff --git a/busybox/util-linux/more.c b/busybox/util-linux/more.c
new file mode 100644
index 0000000..e910388
--- /dev/null
+++ b/busybox/util-linux/more.c
@@ -0,0 +1,211 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini more implementation for busybox
+ *
+ * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Latest version blended together by Erik Andersen <andersen@codepoet.org>,
+ * based on the original more implementation by Bruce, and code from the
+ * Debian boot-floppies team.
+ *
+ * Termios corrects by Vladimir Oleynik <dzo@simtreas.ru>
+ *
+ * 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 <stdio.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include "busybox.h"
+
+
+#ifdef CONFIG_FEATURE_USE_TERMIOS
+static int cin_fileno;
+#include <termios.h>
+#define setTermSettings(fd,argp) tcsetattr(fd,TCSANOW,argp)
+#define getTermSettings(fd,argp) tcgetattr(fd, argp);
+
+static struct termios initial_settings, new_settings;
+
+static void set_tty_to_initial_mode(void)
+{
+	setTermSettings(cin_fileno, &initial_settings);
+}
+
+static void gotsig(int sig)
+{
+	putchar('\n');
+	exit(EXIT_FAILURE);
+}
+#endif /* CONFIG_FEATURE_USE_TERMIOS */
+
+
+extern int more_main(int argc, char **argv)
+{
+	int c, lines, input = 0;
+	int please_display_more_prompt = 0;
+	struct stat st;
+	FILE *file;
+	FILE *cin;
+	int len, page_height;
+	int terminal_width;
+	int terminal_height;
+#ifndef CONFIG_FEATURE_USE_TERMIOS
+	int cin_fileno;
+#endif
+
+	argc--;
+	argv++;
+
+
+	/* not use inputing from terminal if usage: more > outfile */
+	if(isatty(STDOUT_FILENO)) {
+		cin = fopen(CURRENT_TTY, "r");
+		if (!cin)
+			cin = bb_xfopen(CONSOLE_DEV, "r");
+		cin_fileno = fileno(cin);
+		please_display_more_prompt = 2;
+#ifdef CONFIG_FEATURE_USE_TERMIOS
+		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);
+		(void) signal(SIGINT, gotsig);
+		(void) signal(SIGQUIT, gotsig);
+		(void) signal(SIGTERM, gotsig);
+#endif
+	} else {
+		cin = stdin;
+	}
+
+	do {
+		if (argc == 0) {
+			file = stdin;
+		} else
+			file = bb_wfopen(*argv, "r");
+		if(file==0)
+			goto loop;
+
+		st.st_size = 0;
+		fstat(fileno(file), &st);
+
+		please_display_more_prompt &= ~1;
+
+		get_terminal_width_height(cin_fileno, &terminal_width, &terminal_height);
+		if (terminal_height > 4)
+			terminal_height -= 2;
+		if (terminal_width > 0)
+			terminal_width -= 1;
+
+		len=0;
+		lines = 0;
+		page_height = terminal_height;
+		while ((c = getc(file)) != EOF) {
+
+			if ((please_display_more_prompt & 3) == 3) {
+				len = printf("--More-- ");
+				if (file != stdin && st.st_size > 0) {
+#if _FILE_OFFSET_BITS == 64
+					len += printf("(%d%% of %lld bytes)",
+						   (int) (100 * ((double) ftell(file) /
+						   (double) st.st_size)), (long long)st.st_size);
+#else
+					len += printf("(%d%% of %ld bytes)",
+						   (int) (100 * ((double) ftell(file) /
+						   (double) st.st_size)), (long)st.st_size);
+#endif
+				}
+
+				fflush(stdout);
+
+				/*
+				 * We've just displayed the "--More--" prompt, so now we need
+				 * to get input from the user.
+				 */
+				input = getc(cin);
+#ifndef CONFIG_FEATURE_USE_TERMIOS
+				printf("\033[A"); /* up cursor */
+#endif
+				/* Erase the "More" message */
+				putc('\r', stdout);
+				while (--len >= 0)
+					putc(' ', stdout);
+				putc('\r', stdout);
+				len=0;
+				lines = 0;
+				page_height = terminal_height;
+				please_display_more_prompt &= ~1;
+
+				if (input == 'q')
+					goto end;
+			}
+
+			/*
+			 * There are two input streams to worry about here:
+			 *
+			 * c     : the character we are reading from the file being "mored"
+			 * input : a character received from the keyboard
+			 *
+			 * If we hit a newline in the _file_ stream, we want to test and
+			 * see if any characters have been hit in the _input_ stream. This
+			 * allows the user to quit while in the middle of a file.
+			 */
+			if (c == '\n') {
+				/* increment by just one line if we are at
+				 * the end of this line */
+				if (input == '\n')
+					please_display_more_prompt |= 1;
+				/* Adjust the terminal height for any overlap, so that
+				 * no lines get lost off the top. */
+				if (len >= terminal_width) {
+					int quot, rem;
+					quot = len / terminal_width;
+					rem  = len - (quot * terminal_width);
+					if (quot) {
+						if (rem)
+							page_height-=quot;
+						else
+							page_height-=(quot-1);
+					}
+				}
+				if (++lines >= page_height) {
+					please_display_more_prompt |= 1;
+				}
+				len=0;
+			}
+			/*
+			 * If we just read a newline from the file being 'mored' and any
+			 * key other than a return is hit, scroll by one page
+			 */
+			putc(c, stdout);
+			len++;
+		}
+		fclose(file);
+		fflush(stdout);
+loop:
+		argv++;
+	} while (--argc > 0);
+  end:
+	return 0;
+}