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#!/usr/bin/env python
# Copyright 2015 The PDFium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import os
import sys
import common
class PNGDiffer():
ACTUAL_TEMPLATE = '.pdf.%d.png'
EXPECTED_TEMPLATE = '_expected' + ACTUAL_TEMPLATE
PLATFORM_EXPECTED_TEMPLATE = '_expected_%s' + ACTUAL_TEMPLATE
def __init__(self, finder):
self.pdfium_diff_path = finder.ExecutablePath('pdfium_diff')
self.os_name = finder.os_name
def GetActualFiles(self, input_filename, source_dir, working_dir):
actual_paths = []
template_paths = self._GetTemplatePaths(
input_filename, source_dir, working_dir)
actual_path_template = template_paths[0];
expected_path_template = template_paths[1]
platform_expected_path_template = template_paths[2]
i = 0
while True:
actual_path = actual_path_template % i
expected_path = expected_path_template % i
platform_expected_path = (
platform_expected_path_template % (self.os_name, i))
if os.path.exists(platform_expected_path):
expected_path = platform_expected_path
elif not os.path.exists(expected_path):
break
actual_paths.append(actual_path)
i += 1
return actual_paths
def HasDifferences(self, input_filename, source_dir, working_dir,
redirect_output=False):
template_paths = self._GetTemplatePaths(
input_filename, source_dir, working_dir)
actual_path_template = template_paths[0];
expected_path_template = template_paths[1]
platform_expected_path_template = template_paths[2]
i = 0
while True:
actual_path = actual_path_template % i
expected_path = expected_path_template % i
# PDFium tests should be platform independent. Platform based results are
# used to capture platform dependent implementations.
platform_expected_path = (
platform_expected_path_template % (self.os_name, i))
if (not os.path.exists(expected_path) and
not os.path.exists(platform_expected_path)):
if i == 0:
print "WARNING: no expected results files for " + input_filename
break
print "Checking " + actual_path
sys.stdout.flush()
if os.path.exists(expected_path):
error = common.RunCommand(
[self.pdfium_diff_path, expected_path, actual_path],
redirect_output)
else:
error = 1;
if error:
# When failed, we check against platform based results.
if os.path.exists(platform_expected_path):
error = common.RunCommand(
[self.pdfium_diff_path, platform_expected_path, actual_path],
redirect_output)
if error:
print "FAILURE: " + input_filename + "; " + str(error)
return True
i += 1
return False
def _GetTemplatePaths(self, input_filename, source_dir, working_dir):
input_root, _ = os.path.splitext(input_filename)
actual_path = os.path.join(working_dir, input_root + self.ACTUAL_TEMPLATE)
expected_path = os.path.join(
source_dir, input_root + self.EXPECTED_TEMPLATE)
platform_expected_path = os.path.join(
source_dir, input_root + self.PLATFORM_EXPECTED_TEMPLATE)
return (actual_path, expected_path, platform_expected_path)
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