#

# Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

# All rights reserved.

# This component and the accompanying materials are made available

# under the terms of the License "Eclipse Public License v1.0"

# which accompanies this distribution, and is available

# at the URL "http://www.eclipse.org/legal/epl-v10.html".

#

# Initial Contributors:

# Nokia Corporation - initial contribution.

#

# Contributors:

#

# Description: 

# Filter class for doing --what and --check operations

#

import os

import sys

import re

import filter_interface

class FilterWhat(filter_interface.Filter):

	def print_file(self, line, start, end):

		"Ensure DOS slashes on Windows"

		"""Use chars between enclosing tags ("<>", "''", etc)

				start = opening tag, so the line we need

				actually starts at 'start + 1' """

		if "win" in self.buildparameters.platform:

			filename = line[(start + 1):end].replace("/","\\")

		else:

			filename = line[(start + 1):end]

		if self.check:

			if not os.path.isfile(filename):

				print "MISSING:", filename

				self.ok = False

		else:

			self.outfile.write(filename+"\n")

	def open(self, build_parameters):

		"initialise"

		self.buildparameters = build_parameters

		self.check = build_parameters.doCheck

		self.what = build_parameters.doWhat

		self.outfile = sys.stdout

		self.outfile_close = False

		if "FILTERWHAT_FILE" in os.environ:

			try:

				self.outfile = open(os.environ['FILTERWHAT_FILE'],"w+")

				self.outfile_close = True

			except Exception,e:

				raise Exception("The 'What Filter' could not open the output file specified in the FILTER_WHAT environment variable: " + os.environ['FILTERWHAT_FILE'])

		# repetitions is for tracking repeated lines in the output log

		# when --check and --what are called

		self.repetitions = {}

		"Regex for old what output"

		if "win" in self.buildparameters.platform:

			self.regex = re.compile("^[a-zA-Z]:\S+$")

		else:

			self.regex = re.compile("^/\S+$")

		"Regex for targets"

		self.target_regex = re.compile("^<(build|stringtable|resource|bitmap)>.*")

		"Regex for exports"

		self.export_regex = re.compile("^<export destination.*")

		"Regex for zip exports"

		self.zip_export_regex = re.compile("^<member>.*")

		self.ok = True		

		return self.ok

	def write(self, text):

		"process some log text"

		for line in text.splitlines():

			line = line.rstrip()

			if not line in self.repetitions:

				self.repetitions[line] = 0

			if self.repetitions[line] == 0:

				if self.regex.match(line) and (self.what or self.check):

					"Print the whole line"

					self.print_file(line, (-1), len(line))

				if self.target_regex.match(line):

					"Grab the filename between <build> and </build>" 

					start = line.find(">")

					end = line.rfind("<")

					self.print_file(line, start, end)

				elif self.export_regex.match(line):

					"Grab the filename between the first set of '' chars" 

					start = line.find("'")

					end = line.find("'", (start + 1))

					self.print_file(line, start, end)

				elif self.zip_export_regex.match(line):

					"Grab the filename between <member> and </member>" 

					start = line.find(">")

					end = line.rfind("<")

					self.print_file(line, start, end)

			self.repetitions[line] += 1

		return self.ok

	def close(self):

		if self.outfile_close:

			self.outfile.close()

		return self.ok