letterconv

#!/bin/bash
# This script's framework was created using makescript 
# version v1.0.3, dated 2019-07-19
# Makescript and its accompanying scripts are copyrighted
# by Aetesaki (c) 2018
# 
# letterconv (c) 2019 aetesaki
#
# ##################################################
# HISTORY:
# ##################################################
#
# * 2019-07-21 - v0.0.0  - First Creation
# * 2019-07-21 - v1.0.0  - First release
#
# ##################################################
# Initializing constants and variables
# ##################################################
# Setting constants
version="v1.0.0"            # Sets version variable
lastEdited="2019-07-21"     # Sets last edited variable
[ ! -t 0 ] && pipe=$(cat)   # if stdin is open dump stdin to $pipe
# Declaring variables
declare conv # converted letter
# Declare array
declare -A letter
# Declare all variables to be used in the script 
# ##################################################
# short help function
# ##################################################
shorthelp() {
    # Edit as required
    cat << EOF
Usage: letterconv [letter]
       letterconv --help
       letterconv --version"
EOF
}
# ##################################################
# no arguments gives short help
# ##################################################
# if number of arguments is 0
if [ "$#" == "0" ]; then
	# if length of $pipe is 0
	if [ -z "$pipe" ]; then
		# display shorthelp and exit
		shorthelp
		exit 1
	else
		# else set arguments to $pipe
		set -- "$pipe"
	fi
fi 
# ##################################################
# -- help
# ##################################################
# if the first argument is --help
if [ "$1" == "--help" ]; then
    shorthelp
    # Write options and explanations
    cat << EOF
   --help                 Displays this text and exit.
   --version              Displays the version of the script and exit.
   
   Note that the delang letters L, Z, and z, has to be prefixed with
   del, and included within quote marks
   
   examples:
   $ letterconv L
   Л
   $ letterconv "del L"
   R
   
EOF
    # Write information on arguments afterwards
    # Write examples as required
    exit 0
fi 
# ##################################################
# -- version
# ##################################################
# if the first argument is --version
if [ "$1" == "--version" ]; then
	# display the version text
    cat << EOF
letterconv ${version}, dated ${lastEdited}
(c) 2019 aetesaki
EOF
    exit 0
fi
# ##################################################
# Array setup section
# ##################################################
# Latin to Delang
letter["A"]="А"; letter["a"]="а"
letter["AU"]="Ҩ"; letter["Au"]="Ҩ"; letter["au"]="ҩ"
letter["B"]="Б"; letter["b"]="б"
letter["C"]="З"; letter["c"]="з"
letter["D"]="Δ"; letter["d"]="δ"
letter["E"]="Е"; letter["e"]="е"
letter["EU"]="Є"; letter["Eu"]="Є"; letter["eu"]="є"
letter["F"]="F"; letter["f"]="ƒ"
letter["G"]="Г"; letter["g"]="г"
letter["H"]="Ƕ"; letter["h"]="ƕ"
letter["I"]="І"; letter["i"]="і"
letter["J"]="Ј"; letter["j"]="ј"
letter["K"]="К"; letter["k"]="к"
letter["L"]="Л"; letter["l"]="л"
letter["LL"]="Љ"; letter["Ll"]="Љ"; letter["ll"]="љ"
letter["M"]="М"; letter["m"]="м"
letter["N"]="Н"; letter["n"]="н"
letter["NG"]="Њ"; letter["Ng"]="Њ"; letter["ng"]="њ"
letter["O"]="О"; letter["o"]="о"
letter["P"]="П"; letter["p"]="п"
letter["Q"]="Ь"; letter["q"]="Ь"
letter["QJ"]="Ҍ"; letter["Qj"]="Ҍ"; letter["qj"]="ҍ"
letter["R"]="del L"; letter["r"]="ł"
letter["S"]="Ѕ"; letter["s"]="ѕ"
letter["SJ"]="del Z"; letter["Sj"]="del Z"; letter["sj"]="del z"
letter["T"]="Т"; letter["t"]="т"
letter["U"]="И"; letter["u"]="и"
letter["V"]="В"; letter["v"]="в"
letter["W"]="Ѡ"; letter["w"]="ѡ"
letter["X"]="Р"; letter["x"]="р"
letter["Y"]="Y"; letter["y"]="y"
letter["Z"]="С"; letter["z"]="с"
letter["ZJ"]="Ҫ"; letter["Zj"]="Ҫ"; letter["zj"]="ҫ"

# Delang to Latin
letter["А"]="A"; letter["а"]="a"
letter["Ҩ"]="Au"; letter["ҩ"]="au"
letter["Б"]="B"; letter["б"]="b"
letter["З"]="C"; letter["з"]="c"
letter["Δ"]="D"; letter["δ"]="d"
letter["Е"]="E"; letter["е"]="e"
letter["Є"]="Eu"; letter["є"]="eu"
letter["F"]="F"; letter["ƒ"]="f"
letter["Г"]="G"; letter["г"]="g"
letter["Ƕ"]="H"; letter["ƕ"]="h"
letter["І"]="I"; letter["і"]="i"
letter["Ј"]="J"; letter["ј"]="j"
letter["К"]="K"; letter["к"]="k"
letter["Л"]="L"; letter["л"]="l"
letter["Љ"]="Ll"; letter["љ"]="ll"
letter["М"]="M"; letter["м"]="m"
letter["Н"]="N"; letter["н"]="n"
letter["Њ"]="Ng"; letter["њ"]="ng"
letter["О"]="O"; letter["о"]="o"
letter["П"]="P"; letter["п"]="p"
letter["Ь"]="Q"; letter["Ь"]="q"
letter["Ҍ"]="Qj"; letter["ҍ"]="qj"
letter["del L"]="R"; letter["ł"]="r"
letter["Ѕ"]="S"; letter["ѕ"]="s"
letter["del Z"]="Sj"; letter["del z"]="sj"
letter["Т"]="T"; letter["т"]="t"
letter["И"]="U"; letter["и"]="u"
letter["В"]="v"; letter["в"]="v"
letter["Ѡ"]="W"; letter["ѡ"]="w"
letter["Р"]="X"; letter["р"]="x"
letter["Y"]="y"; letter["y"]="y"
letter["С"]="Z"; letter["с"]="z"
letter["Ҫ"]="Zj"; letter["ҫ"]="zj"

# ##################################################
# Main section
# ##################################################
# Write your script here
# convert the letter
conv=${letter["$1"]}
# if $conv is empty
if [ -z $conv ]; then
	# display error message and exit
	echo "$1 is not a valid letter." >&2
	exit 1
fi
echo $conv