Added a terminal print functions file

#

set -e

# LIBDIR is populated by the install script

LIBDIR=`dirname $0`

source $LIBDIR/string_functions

BIN=`basename "$0"`

GIT="git ${GIT_DIR+--git-dir "${GIT_DIR}"}"

GIT_DIR="${GIT_DIR:-`git rev-parse --git-dir`}"

	USAGE

}

die ()

{

	printf -- "$@"

	echo

	exit 1

} >&2

add_arg ()

{

		case "$1" in

			--help|-h)

				printf "$BIN $command"

				sumarise_args

				sumarise_args | wrap "    "

				return 1

				;;

			--summary)

#! /bin/bash

#

#  This file contains functions for printing well formatted messages to a text 

#  terminal from bash scripts.

#

#  Copyright (C) 2013  Dom Sekotill

#

#  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/>.

#

##

# column()

# Find the column the terminal cursor is currently in.

#

# Usage:

# column > column number

##

column ()

{

	local oldstty pos

	exec < /dev/tty

	oldstty=`stty -g`

	stty raw -echo min 0

	echo -en '\033[6n' > /dev/tty

	read -sdR pos

	stty $oldstty

	printf "${pos#*;}"

}

##

# wrap()

# Intelligently word wrap standard input, with an optional prefix on each line.

#

# If printing does not start at the left-most column the first prefix will be 

# omitted.

#

# Usage:

# wrap [prefix] < pre-wrapped text > post-wrapped text

##

wrap ()

{

	local prefix="$1"

	local width=`tput cols`

	local maxspace=$((width/4))

	local line column word space

	local IFS

	# minimum terminal width is 80 characters, less is just silly

	[ ${width:-0} -lt 80 ] && width=80

	[ ${#prefix} -gt $((width/4)) ] && prefix="${prefix::$((width/4-4))}... "

	while read -a line; do

		column=`column`

		# only print the prefix if starting at the beginning of a line

		if [ $column -le 1 ]; then

			printf "$prefix"

			column=$((column+${#prefix}))

		fi

		for word in ${line[*]}; do

			while [ "$word" ]; do

				space=$((width - $column))

				if [ ${#word} -gt $space ]; then

					if [ $space -gt 4 ] && [ ${#word} -gt $maxspace ]; then

						space=$((space-1))

						printf " ${word::$space}-"

						word="${word:$space}"

					fi

					printf "\n$prefix"

					column=$((${#prefix}+1))

				else

					printf " $word"

					column=$((column+${#word}+1))

					word=

				fi

			done

		done

		echo

	done

}

##

# die()

# Print an error message and exit.

#

# Prints an error message given by the arguments, well wrapped and prefixed 

# with the string "ERROR:". If accepts arguments identical to printf except for 

# '-v <variable>', which will be treated as strings if given.

#

# The value of EXIT_CODE will be used as the exit code if it exists, otherwise 

# the exit code will be 1

#

# Usage:

# [EXIT_CODE={X}]

# die "<format string>" [<option 1> [<option 2> ...]]

##

die ()

{

	printf -- "$@" | wrap ERROR:

	echo

	exit ${EXIT_CODE:-1}

} >&2