Combine PHP Source Files Into THE MONOLITH

php-source-merge.py

# -*- coding: utf-8 -*-

# This script is used to combine PHP source files together into one big glob.
# I wrote this so I could distribute a single file web application, but develop
# it in a sane fashion.

# Copyright (c) 2010, John M. Hobbs
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
#    * Redistributions of source code must retain the above copyright notice, 
#      this list of conditions and the following disclaimer.
#    * Redistributions in binary form must reproduce the above copyright notice,
#      this list of conditions and the following disclaimer in the documentation
#      and/or other materials provided with the distribution.
#    * Neither the name of the <ORGANIZATION> nor the names of its contributors
#      may be used to endorse or promote products derived from this software 
#      without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

import os
import re

php_open_tags = re.compile( r'<\?php' )
php_close_tags = re.compile( r'\?>' )
php_include_file = re.compile( r'^.*[\'"](.*)[\'"].*' )

def is_include ( line ):
	head = line.strip()
	return head[0:12] == "include_once" or head[0:12] == "require_once" or head[0:7] == "include" or head[0:7] == "require"

def expand_file ( parent, filename, outhandle ):
	working_directory = os.path.dirname( filename )
	unclosed_tags = 0
	try:
		with open( filename, 'r' ) as inhandle:
			print "INCLUDE:", parent, "=>", filename
			for line in inhandle:
				unclosed_tags += len( php_open_tags.findall( line ) )
				unclosed_tags -= len( php_close_tags.findall( line ) )
				if is_include( line ):
					included_filename = php_include_file.sub( r'\1', line.strip() )
					outhandle.write( "?>\n" )
					expand_file( filename, "%s/%s" % ( working_directory, included_filename ), outhandle )
					outhandle.write( "<?php\n" )
				else:
					outhandle.write( line )
	except IOError, e:
		print "WARNING: In %s, could not find %s" % ( parent, filename )

	if unclosed_tags == 1:
		outhandle.write( "?>\n" );
	elif unclosed_tags > 1:
		print "ERROR: Too many unclosed tags in", filename

if __name__ == "__main__":
	import sys
	
	if len( sys.argv ) < 3:
		print "Usage: %s [input] [output]" % sys.argv[0]
		exit( 1 )
	
	# Extract!
	with open( "%s.tmp" % sys.argv[2], 'w' ) as out:
		expand_file( os.path.dirname( os.path.abspath( __file__ ) ), os.path.abspath( sys.argv[1] ), out )
	
	# Minor post-processing to strip useless lines
	with open( sys.argv[2], 'w' ) as outfile:
		with open( "%s.tmp" % sys.argv[2], 'r' ) as infile:
			last_line = None
			for line in infile:
				# ?>
				# <?php
				if last_line == "?>\n" and line == "<?php\n":
					last_line = None
					continue
				# <?php
				# ?>
				if last_line == "<?php\n" and line == "?>\n":
					last_line = None
					continue

				if last_line:
					outfile.write( last_line )

				last_line = line

		if last_line:
			outfile.write( last_line )
	
	os.unlink( "%s.tmp" % sys.argv[2] )