Bash script to format JSON copied text into a JSONArray file

putme_on_array.sh

### Validate a clipboard copied JSONArray. If the JSON is not an Array, this
### script put within to one.
### Usage
### 1. Copy a JSON string
### 2. Run this script ./putme_on_array.sh
### 3. If success, can happen
### 3.1 If JSON is a JSONObject, then the script will write a ~/json_array.json file with 
###     the result in your clipboard
### 3.2 Otherwise the script will print an error  

#!/bin/bash
copiedtext=$(pbpaste)
echo $copiedtext | json_pp | grep "" > /dev/null
clipboard_result=$?

# JSON is correctly formatted?
if [ $clipboard_result = 0 ]; then

	# Check if copied text is within an array
	firstchar="$(printf '%c' "$(pbpaste)")"
	lastchar=`echo $copiedtext | sed -E 's/.*(.)/\1/'`

	if [ $firstchar = "[" ] && [ $lastchar = "]" ]; then
		echo "Its a JSON Array!"
		formatted_text=`echo "${copiedtext}" | json_pp`
		echo $formatted_text >> ~/json_array.json		
	else
		echo "Is not a JSON Array, converting into an array..."
		formatted_text=`echo "[${copiedtext}]" | json_pp`
		echo $formatted_text | pbcopy
		echo $formatted_text >> ~/json_array.json		
	fi

	echo "Done!"
fi