Send Cypher commands to Neo4j instance.

neo.sh

#!/usr/bin/env bash

# usage neo.sh [-h host:port] [-u user:pass] [cmd]
# end cypher statements with semicolon
# terminate read loop with ^d or return

# Originially from: https://gist.github.com/jexp/8213614
# Slight edits and comments by:
# @author Robert Brisita <rbrisita@snap-interactive.com>

# Check if host parameter was given
HOST="localhost:7474"
if [ "$1" == "-h" ]
then
	shift 1		# Remove argument name from argument array
	HOST="$1"	# Save value
	shift 1		# Remove argument value from argument array
fi

# Check if authorization parameter was given
AUTH=""
if [ "$1" == "-u" ]
then
	shift 1
	AUTH="-u $1"
	shift 1
fi

# Set up Neo4j execution point
URL="http://${HOST}/db/manage/server/console"

# Set up CURL HTTP Headers
HEADERS=' -H accept:application/json -H content-type:application/json '

# The run function with given command 
function run
{
	CMD="$@"
	DATA="{\"command\":\"${CMD}\",\"engine\":\"shell\"}"
	RES=$(curl -s $HEADERS $AUTH -d "$DATA" "$URL")	# Execute CURL

	# Bash substitution
	RES=${RES#'[ "'}
	PROMPT_PATTERN="\", \"neo4j-sh (*)$ \" ]"
	RES=${RES%$PROMPT_PATTERN}

	# Continue reading, incomplete command
	if [ "$RES" == "\", \"> \" ]" ]
	then 
		return 1
	else 
		echo -e "${RES//\\\\n/\\n}"
		return 0
	fi
}


# Check if command given
if [ "$@" ]
then 
	run "$@"
	exit $?
fi

# Create Neo4j shell command
NEO_SH="neo4j-sh (*)\$ "

# Display prompt (-p) and read into CMD
read -p "$NEO_SH" CMD;

# Run command and continue reading if need be
while [ "$CMD" ]; do
	run "$CMD"
	if [ $? == 0 ]
	then
		read -p "$NEO_SH" CMD
	else
		# Continue reading, incomplete command
		read -p "> " CMD1
		CMD="${CMD} ${CMD1}"	# Build command
	fi
done