adding kafka plugin for auto-completion

plugins/kafka/generate.zsh

@@ -0,0 +1,95 @@
+#!/bin/zsh
+
+OUT=kafka.zsh
+COMMANDS=("kafka-acls" "kafka-avro-console-consumer" "kafka-avro-console-producer"
+"kafka-broker-api-versions" "kafka-configs" "kafka-console-consumer" 
+"kafka-console-producer" "kafka-consumer-groups" "kafka-consumer-perf-test" 
+"kafka-delegation-tokens" "kafka-topics" "kafka-producer-perf-test"
+"kafka-dump-log" "kafka-log-dirs" "kafka-verifiable-consumer"
+"kafka-verifiable-producer" "kafka-streams-application-reset"
+"kafka-mirror-maker" "kafka-delete-records" "replicator"
+)
+
+function kafka_retrieve_help_command() {
+	cmd=$1
+	option=""
+	desc=""
+	help_output=`$cmd 2>&1`
+	arg_name="$(echo $cmd | tr - _)_args"
+	start_desc_column=`echo $help_output | grep Description | head -n 1`
+
+	# If a "Description" column is present 
+	# look for the offset to truncate the 
+	# description of the options.
+	#
+	# This as some tools usage use a table with 2
+	# column with the format
+	# Option    Description
+	# --blbla   this is 
+	#           useful! 
+	if [[ ! -z $start_desc_column ]]; then
+		searchstring="Description"
+	  rest=${start_desc_column##*$searchstring}
+		start_desc_column=$(( ${#start_desc_column} - ${#rest} - ${#searchstring} ))
+	else
+		start_desc_column=1
+	fi
+
+	echo "declare -a $arg_name"  >> $OUT
+	echo "$arg_name=()" >> $OUT
+
+	# Iterate over each line to check for options 
+	# after check the iteration, truncate over the 
+	# offset and iterate word by word to build the
+	# description 
+	IFS=$'\n'
+	for line in `echo $help_output`; do
+		if [[ $line =~ "^[ \t]*--[a-z][a-z\-\.]+" ]]; then
+			if [ ! -z $option ]; then
+				echo "$arg_name+=('$option:${desc//\'/''}')" >> $OUT
+			fi	
+
+			option=`echo $line | sed -E 's/^\s*(--[a-z\.\\\-]+).*$/\1/'`
+			desc=""
+		fi
+		IFS=" "
+		for word in `echo $line | cut -c $start_desc_column-`; do
+			desc="$desc $word"
+		done
+		IFS=$'\n'
+	done
+
+	unset IFS
+
+	if [ ! -z $option ]; then
+		echo "$arg_name+=('$option:${desc//\'/''}')" >> $OUT
+	fi	
+}
+
+function kafka-command() {
+	cmd=$1
+	echo "compdef \"_kafka-command $cmd\" $cmd" >> $OUT
+}
+
+cat << EOF > $OUT
+#!/bin/sh
+#
+# DISCLAIMER: THIS FILE HAS BEEN AUTOMATICALLY GENERATED
+# PLEASE DO NOT TOUCH!!!
+# IF YOU NEED TO DO ANY MODIFICATION, EDIT GENERATE.ZSH
+# FOR MORE INFORMATION https://github.com/Dabz/kafka-zsh-completions
+#
+
+function _kafka-command() {
+	cmd=\$1
+	arg_name="\$(echo \$cmd | tr - _)_args"
+	typeset -a options
+	eval _describe 'values' options -- \$arg_name
+}
+
+EOF
+
+for cmd in ${COMMANDS[@]}; do
+	kafka_retrieve_help_command $cmd
+	kafka-command $cmd
+done