Teach get_terminal_width_height to fall back to $LINES and $COLUMNS when

used via things like a serial console.

diff --git a/libbb/Makefile.in b/libbb/Makefile.in
index 3db891d59a4b1ce135a384b2b588b06ee198c845..f731e6e03de832e189a2868125eca5a50fb21d65 100644 (file)
--- a/libbb/Makefile.in
+++ b/libbb/Makefile.in
@@ -22,16 +22,14 @@ LIBBB-y:= \
        kernel_version.c last_char_is.c login.c \
        make_directory.c md5.c mode_string.c mtab_file.c \
        obscure.c parse_mode.c parse_number.c perror_msg.c \
-       perror_msg_and_die.c get_console.c \
-       process_escape_sequence.c procps.c \
-       recursive_action.c remove_file.c \
+       perror_msg_and_die.c get_console.c process_escape_sequence.c procps.c \
+       recursive_action.c remove_file.c info_msg.c vinfo_msg.c \
        restricted_shell.c run_parts.c run_shell.c safe_read.c safe_write.c \
        safe_strncpy.c setup_environment.c sha1.c simplify_path.c \
        trim.c u_signal_names.c vdprintf.c verror_msg.c \
-       info_msg.c vinfo_msg.c \
        vherror_msg.c vperror_msg.c wfopen.c xconnect.c xgetcwd.c \
        xgethostbyname.c xgethostbyname2.c xreadlink.c xgetlarg.c \
-       get_terminal_width_height.c fclose_nonstdin.c fflush_stdout_and_exit.c \
+       fclose_nonstdin.c fflush_stdout_and_exit.c \
        getopt_ulflags.c default_error_retval.c wfopen_input.c speed_table.c \
        perror_nomsg_and_die.c perror_nomsg.c skip_whitespace.c bb_askpass.c \
        warn_ignoring_args.c concat_subpath_file.c vfork_daemon_rexec.c \

diff --git a/libbb/get_terminal_width_height.c b/libbb/get_terminal_width_height.c
deleted file mode 100644 (file)
index 941f04c..0000000
--- a/libbb/get_terminal_width_height.c
+++ /dev/null
@@ -1,31 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * Determine the width and height of the terminal.
- *
- * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
- *
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
- */
-
-#include <stdio.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <unistd.h>
-#include <termios.h>
-#include <sys/ioctl.h>
-#include "libbb.h"
-
-/* It is perfectly ok to pass in a NULL for either width or for
- * height, in which case that value will not be set.  */
-int get_terminal_width_height(int fd, int *width, int *height)
-{
-       struct winsize win = { 0, 0, 0, 0 };
-       int ret = ioctl(fd, TIOCGWINSZ, &win);
-       if (win.ws_row <= 1) win.ws_row = 24;
-       if (win.ws_col <= 1) win.ws_col = 80;
-       if (height) *height = (int) win.ws_row;
-       if (width) *width = (int) win.ws_col;
-
-       return ret;
-}

diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c
index d77bf3839098901904e1501f811ab344406a9ecd..92091e555032060fe2fdaf34292a7ea288c5193f 100644 (file)
--- a/libbb/xfuncs.c
+++ b/libbb/xfuncs.c
@@ -6,7 +6,7 @@
  * Copyright (C) 2006 Rob Landley
  * Copyright (C) 2006 Denis Vlasenko
  *
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPL version 2, see file LICENSE in this tarball for details.
  */
 
 #include "busybox.h"
@@ -494,3 +494,26 @@ void xstat(char *name, struct stat *stat_buf)
 }
 #endif
 
+#ifdef L_get_terminal_width_height
+/* It is perfectly ok to pass in a NULL for either width or for
+ *  * height, in which case that value will not be set.  */
+int get_terminal_width_height(int fd, int *width, int *height)
+{
+       struct winsize win = { 0, 0, 0, 0 };
+       int ret = ioctl(fd, TIOCGWINSZ, &win);
+       if (!win.ws_row) {
+               char *s = getenv("LINES");
+               if (s) win.ws_row = atoi(s);
+       }
+       if (win.ws_row <= 1) win.ws_row = 24;
+       if (!win.ws_col) {
+               char *s = getenv("COLUMNS");
+               if (s) win.ws_col = atoi(s);
+       }
+       if (win.ws_col <= 1) win.ws_col = 80;
+       if (height) *height = (int) win.ws_row;
+       if (width) *width = (int) win.ws_col;
+
+       return ret;
+}
+#endif