#!/usr/bin/ruby
# Copyright (c) 2012 Apple Inc. All Rights Reserved.
#
# IMPORTANT NOTE: This file is licensed only for use on Apple-branded
# computers and is subject to the terms and conditions of the Apple Software
# License Agreement accompanying the package this file is a part of.
# You may not port this file to another platform without Apple's written consent.

# Wrapper script for postgres; waits for dataPath to be mounted before proceeding
# Reads additional arguments from a plist specified by optional
#   "--apple-configuration" flag. These args are appended to the original ARGV, and
#   the --apple-configuration args are removed, before handing the final set of args
#   to the real postgres executable.

postgres_real_path = "@PATH_TEMPLATE@"
PLIST_BUDDY = "/usr/libexec/PlistBuddy"

config_file_index = ARGV.index("--apple-configuration")
if !config_file_index.nil?
	config_path = ARGV[config_file_index + 1]
	if config_path.nil?
		puts "Error: missing required argument for --apple-configuration"
		exit(1)
	end
	ARGV.delete_at(config_file_index+1)
	ARGV.delete_at(config_file_index)
	if !FileTest.exists?(config_path)
		puts "Error: missing configuration file at #{config_path}"
		exit(1)
	end
	config_lines = `#{PLIST_BUDDY} -c 'Print :ProgramArguments' #{config_path}`
	config_lines.each do |line|
		if (line =~ /^Array \{/) || (line =~ /^\}/)
			next
		end
		line.chomp!
		line = line.sub(/^\s+/, '')
		ARGV.push(line)
	end
end

dataPathArgIndicatorIndex = ARGV.index("-D")

if !dataPathArgIndicatorIndex.nil?
	dataPathArg = ARGV[dataPathArgIndicatorIndex + 1]
	system("/bin/wait4path", dataPathArg) unless dataPathArg.nil?
end

nargv = ["#{postgres_real_path}", ARGV].flatten
exec(*nargv)
exit(0)