Copying android pictures from a downloaded resource folder into an Android Studio resources folders

android_res_copy

#!/bin/bash

FOLDER_DOES_NOT_EXIST=1
FOLDER_LACKS_SOME_SUBFOLDERS=2
PROMPT_EMPTY=3

# Getting the source folder

echo -n "What is the android resource pack root folder (the one that has the pictures to be copied) ? ($PWD) "
read srcFolder

srcFolder="${srcFolder/#\~/$HOME}" # Substituting the beginning ~ with $HOME value

if [ -z $srcFolder ]
then
	srcFolder=$PWD
fi

if [ ! -d $srcFolder ]
then
	echo "The folder $srcFolder does not exist !"
	exit $FOLDER_DOES_NOT_EXIST
fi

echo "Using source folder $srcFolder."

echo -n "What is the base name (XXX) of drawbles subfolders inside source folder, e.g XXX-hdpi ? (mipmap) ? "
read drawablesBaseNameForSource

if [ -z $drawablesBaseNameForSource ]
then
	drawablesBaseNameForSource="mipmap"
fi

# Checking that the source folder has the five drawable-{h,m,xh,xxh,xxxh}dpi subfolders.
IFS=' ';declare -a bases=(h m xh xxh xxxh)
for current_base in ${bases[@]}
do
	sub_folder_name="${drawablesBaseNameForSource}-${current_base}dpi"
	sub_folder_path="$srcFolder/$sub_folder_name"
	if [ ! -d $sub_folder_path ]
	then
		echo "No folder $sub_folder_name in given source folder ($srcFolder) !"
		exit $FOLDER_LACKS_SOME_SUBFOLDERS
	fi
done

# Getting the destination folder and the resource folders name base

echo -n "What is the destination folder, base of all drawables folders ? "
read destBaseFolder
destBaseFolder="${destBaseFolder/#\~/$HOME}"

if [ -z $destBaseFolder ]
then
	echo "Destination folder name can't be empty !"
	exit $PROMPT_EMPTY
fi

if [ ! -d $destBaseFolder ]
then
	echo "Destination folder does not exist !"
	exit $FOLDER_DOES_NOT_EXIST
fi

# checks that dest base folder name does not end with /
substIndex=$((${#destBaseFolder}-1))
lastChar="${destBaseFolder:$substIndex:1}"
if [ '/' = $lastChar ]
then
	destBaseFolder=${destBaseFolder::-1}
fi

echo -n "What is the base name (XXX) of drawbles subfolders inside destination folder, e.g XXX-hdpi ? (mipmap) ? "
read drawablesBaseNameForDest

if [ -z $drawablesBaseNameForDest ]
then
	drawablesBaseNameForDest="mipmap"
fi

# Processing files
for current_base in ${bases[@]}
do
	current_src_folder="${srcFolder}/$drawablesBaseNameForSource-${current_base}dpi"
	current_dest_folder="${destBaseFolder}/${drawablesBaseNameForDest}-${current_base}dpi"
	mkdir -p $current_dest_folder;
	for subElement in "$current_src_folder"/*
	do
		if [ -f $subElement ]
		then
			cp -v $subElement $current_dest_folder
			if [ $? -ne 0 ]
			then
				echo "Error copying file $subElement !"
			fi
		fi
	done
done

echo "Done."

Please don't be too critic : just a poor script written in just 3/4 hours though I am a bash scripting beginner.