Adding upstream version 5.2.37.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

examples/scripts/bcalc

@@ -0,0 +1,104 @@
+#! /bin/bash
+#
+# bcalc - a coproc example that uses bc to evaluate floating point expressions
+#
+#   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 3 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, see <http://www.gnu.org/licenses/>.
+#
+# If supplied command-line arguments, it uses them as the expression to have
+# bc evaluate, and exits after reading the result. Otherwise, it enters an
+# interactive mode, reading expressions and passing them to bc for evaluation,
+# with line editing and history.
+#
+# You could even use this to write bc programs, but you'd have to rework the
+# single-line REPL a little bit to do that (and get over the annoying timeout
+# on the read)
+#
+# Chet Ramey
+# chet.ramey@case.edu
+
+# we force stderr to avoid synchronization issues on calculation errors, even
+# with the read timeout
+init()
+{
+	coproc BC { bc -q 2>&1; }
+	# set scale
+	printf "scale = 10\n" >&${BC[1]}
+	# bash automatically sets BC_PID to the coproc pid; we store it so we
+	# can be sure to use it even after bash reaps the coproc and unsets
+	# the variables
+	coproc_pid=$BC_PID
+}
+
+# not strictly necessary; the pipes will be closed when the program exits
+# but we can use it in reset() below
+fini()
+{
+	eval exec "${BC[1]}>&- ${BC[0]}<&-"
+}
+
+reset()
+{
+	fini	# close the old pipes
+
+	sleep 1
+	kill -1 $coproc_pid >/dev/null 2>&1	# make sure the coproc is dead
+	unset coproc_pid
+
+	init		
+}
+	
+# set a read timeout of a half second to avoid synchronization problems
+calc()
+{
+	printf "%s\n" "$1" >&${BC[1]}
+	read -t 0.5 ANSWER <&${BC[0]}
+}
+
+init
+
+# if we have command line options, process them as a single expression and
+# print the result. we could just run `bc <<<"scale = 10 ; $*"' and be done
+# with it, but we init the coproc before this and run the calculation through
+# the pipes in case we want to do something else with the answer
+
+if [ $# -gt 0 ] ; then
+	calc "$*"
+	printf "%s\n" "$ANSWER"
+	fini
+	exit 0
+fi
+
+# we don't want to save the history anywhere
+unset HISTFILE
+
+while read -e -p 'equation: ' EQN
+do
+	case "$EQN" in
+	'')		continue ;;
+	exit|quit)	break ;;
+	reset)		reset ; continue ;;
+	esac
+
+	# save to the history list
+	history -s "$EQN"
+
+	# run it through bc
+	calc "$EQN"
+	if [ -n "$ANSWER" ] ; then
+		printf "%s\n" "$ANSWER"
+	fi
+done
+fini
+
+exit 0

examples/scripts/cat.sh

@@ -0,0 +1,12 @@
+shcat()
+{
+	while read -r ; do
+		printf "%s\n" "$REPLY"
+	done
+}
+
+if [ -n "$1" ]; then
+	shcat < "$1"
+else
+	shcat
+fi

examples/scripts/center

@@ -0,0 +1,41 @@
+#! /bin/bash
+#
+# center - center a group of lines
+#
+# tabs in the lines might cause this to look a little bit off
+#
+#
+#  Chet Ramey <chet.ramey@case.edu>
+#
+#  Copyright 1999 Chester Ramey
+#
+#   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, or (at your option)
+#   any later version.
+#
+#   TThis 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.
+
+width=${COLUMNS:-80}
+
+if [[ $# == 0 ]]
+then
+	set -- /dev/stdin
+fi
+
+for file
+do
+	while read -r
+	do
+		printf "%*s\n" $(( (width+${#REPLY})/2 )) "$REPLY"
+	done < $file
+done
+
+exit 0

examples/scripts/inpath

@@ -0,0 +1,19 @@
+#! /bin/sh
+#
+# Search $PATH for a file the same name as $1; return TRUE if found.
+#
+
+command=$1
+[ -n "$command" ] || exit 1
+
+set `echo $PATH | sed 's/^:/.:/
+			s/::/:.:/g
+			s/:$/:./
+			s/:/ /g'`
+	
+while [ $# -ne 0 ] ; do
+	[ -f $1/$command ] && exit 0	# test -x not universal
+	shift
+done
+
+exit 1

examples/scripts/shprompt

@@ -0,0 +1,153 @@
+#
+# shprompt -- give a prompt and get an answer satisfying certain criteria
+#
+# shprompt [-dDfFsy] prompt
+#	s = prompt for string
+#	f = prompt for filename
+#	F = prompt for full pathname to a file or directory
+#	d = prompt for a directory name
+#	D = prompt for a full pathname to a directory
+#	y = prompt for y or n answer
+#
+# Chet Ramey
+# chet@ins.CWRU.Edu
+#
+#  Copyright 2002 Chester Ramey
+#
+#   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, or (at your option)
+#   any later version.
+#
+#   TThis 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.
+
+type=file
+
+OPTS=dDfFsy
+
+succeed()
+{
+	echo "$1"
+	exit 0
+}
+
+while getopts "$OPTS" c
+do
+	case "$c" in
+	s)	type=string
+		;;
+	f)	type=file
+		;;
+	F)	type=path
+		;;
+	d)	type=dir
+		;;
+	D)	type=dirpath
+		;;
+	y)	type=yesno
+		;;
+	?)	echo "usage: $0 [-$OPTS] prompt" 1>&2
+		exit 2
+		;;
+	esac
+done
+
+if [ "$OPTIND" -gt 1 ] ; then
+	shift $(( $OPTIND - 1 ))
+fi
+
+while :
+do
+	case "$type" in
+	string)
+		echo -n "$1" 1>&2
+		read ans || exit 1
+		if [ -n "$ans" ] ; then
+			succeed "$ans"
+		fi
+		;;
+	file|path)
+		echo -n "$1" 1>&2
+		read ans || exit 1
+		#
+		# use `fn' and eval so that bash will do tilde expansion for
+		# me
+		#
+		eval fn="$ans"
+		case "$fn" in
+		/*)	if test -e "$fn" ; then
+				succeed "$fn"
+			else
+				echo "$0: '$fn' does not exist" 1>&2
+			fi
+			;;
+		*)	if [ "$type" = "path" ] ; then
+				echo "$0: must give full pathname to file" 1>&2
+			else
+				if test -e "$fn" ; then
+					succeed "$fn"
+				else
+					echo "$0: '$fn' does not exist" 1>&2
+				fi
+			fi
+			;;
+		esac
+		;;
+	dir|dirpath)
+		echo -n "$1" 1>&2
+		read ans || exit 1
+		#
+		# use `fn' and eval so that bash will do tilde expansion for
+		# me
+		#
+		eval fn="$ans"
+		case "$fn" in
+		/*)	if test -d "$fn" ; then
+				succeed "$fn"
+			elif test -e "$fn" ; then
+				echo "$0 '$fn' is not a directory" 1>&2
+			else
+				echo "$0: '$fn' does not exist" 1>&2
+			fi
+			;;
+		*)	if [ "$type" = "dirpath" ] ; then
+				echo "$0: must give full pathname to directory" 1>&2
+			else
+				if test -d "$fn" ; then
+					succeed "$fn"
+				elif test -e "$fn" ; then
+					echo "$0 '$fn' is not a directory" 1>&2
+				else
+					echo "$0: '$fn' does not exist" 1>&2
+				fi
+			fi
+			;;
+		esac
+		;;
+	yesno)
+		echo -n "$1" 1>&2
+		read ans || exit 1
+		case "$ans" in
+		y|Y|[yY][eE][sS])
+			succeed "yes"
+			;;
+		n|N|[nN][oO])
+			succeed "no"
+			exit 0
+			;;
+		*)
+			echo "$0: yes or no required" 1>&2
+			;;
+		esac
+		;;
+	esac
+done
+
+exit 1

examples/scripts/spin.bash

@@ -0,0 +1,37 @@
+#!/bin/bash
+#
+# spin.bash -- provide a `spinning wheel' to show progress
+#
+# Chet Ramey
+# chet@po.cwru.edu
+#
+#  Copyright 1997 Chester Ramey
+#
+#   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, or (at your option)
+#   any later version.
+#
+#   TThis 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.
+
+bs=$'\b'
+ 
+chars="|${bs} \\${bs} -${bs} /${bs}"
+ 
+# Infinite loop for demo. purposes
+while :
+do
+    for letter in $chars
+    do
+        echo -n ${letter}
+    done
+done
+
+exit 0

examples/scripts/xterm_title

@@ -0,0 +1,44 @@
+#! /bin/bash
+#
+# xterm_title - print the contents of the xterm title bar
+#
+# Derived from http://www.clark.net/pub/dickey/xterm/xterm.faq.html#how2_title
+#
+
+#  Copyright 1997 Chester Ramey
+#
+#   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, or (at your option)
+#   any later version.
+#
+#   TThis 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.
+
+P=${0##*/}
+[ -z "$DISPLAY" ] && {
+	echo "${P}: not running X" >&2
+	exit 1
+}
+
+if [ -z "$TERM" ] || [ "$TERM" != "xterm" ]; then
+	echo "${P}: not running in an xterm" >&2
+	exit 1
+fi
+
+exec </dev/tty
+old=$(stty -g)
+stty raw -echo min 0  time ${1-10}
+echo -e "\033[21t\c" > /dev/tty
+IFS='' read -r a
+stty $old
+b=${a#???}
+echo "${b%??}"
+
+exit 0

examples/scripts/zprintf

@@ -0,0 +1,43 @@
+#! /bin/bash
+#
+# zprintf - function that calls gawk to do printf for those systems that
+#	    don't have a printf executable
+#
+# The format and arguments can have trailing commas, just like gawk
+#
+# example:
+#	zprintf 'Eat %x %x and suck %x!\n' 57005 48879 64206
+#
+# Chet Ramey
+# chet@po.cwru.edu
+
+#  Copyright 1996 Chester Ramey
+#
+#   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, or (at your option)
+#   any later version.
+#
+#   TThis 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.
+
+
+[ $# -lt 1 ] && {
+	echo "zprintf: usage: zprintf format [args ...]" >&2
+	exit 2
+}
+
+fmt="${1%,}"
+shift
+
+for a in "$@"; do
+	args="$args,\"${a%,}\""
+done
+
+gawk "BEGIN { printf \"$fmt\" $args }"