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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 distutils.spawn
import itertools
import os
import shutil
import sys
# pylint: disable=relative-import
import common
class PNGDiffer():
def __init__(self, finder, reverse_byte_order):
self.pdfium_diff_path = finder.ExecutablePath('pdfium_diff')
self.os_name = finder.os_name
self.reverse_byte_order = reverse_byte_order
def CheckMissingTools(self, regenerate_expected):
if (regenerate_expected and self.os_name == 'linux' and
not distutils.spawn.find_executable('optipng')):
return 'Please install "optipng" to regenerate expected images.'
return None
def GetActualFiles(self, input_filename, source_dir, working_dir):
actual_paths = []
path_templates = PathTemplates(input_filename, source_dir, working_dir)
for page in itertools.count():
actual_path = path_templates.GetActualPath(page)
expected_path = path_templates.GetExpectedPath(page)
platform_expected_path = path_templates.GetPlatformExpectedPath(
self.os_name, page)
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)
return actual_paths
def HasDifferences(self, input_filename, source_dir, working_dir):
path_templates = PathTemplates(input_filename, source_dir, working_dir)
for page in itertools.count():
actual_path = path_templates.GetActualPath(page)
expected_path = path_templates.GetExpectedPath(page)
# PDFium tests should be platform independent. Platform based results are
# used to capture platform dependent implementations.
platform_expected_path = path_templates.GetPlatformExpectedPath(
self.os_name, page)
if (not os.path.exists(expected_path) and
not os.path.exists(platform_expected_path)):
if page == 0:
print "WARNING: no expected results files for " + input_filename
if os.path.exists(actual_path):
print('FAILURE: Missing expected result for 0-based page %d of %s' %
(page, input_filename))
return True
break
print "Checking " + actual_path
sys.stdout.flush()
if os.path.exists(expected_path):
cmd = [self.pdfium_diff_path]
if self.reverse_byte_order:
cmd.append('--reverse-byte-order')
cmd.extend([expected_path, actual_path])
error = common.RunCommand(cmd)
else:
error = 1
if error:
# When failed, we check against platform based results.
if os.path.exists(platform_expected_path):
cmd = [self.pdfium_diff_path]
if self.reverse_byte_order:
cmd.append('--reverse-byte-order')
cmd.extend([platform_expected_path, actual_path])
error = common.RunCommand(cmd)
if error:
print "FAILURE: " + input_filename + "; " + str(error)
return True
return False
def Regenerate(self, input_filename, source_dir, working_dir, platform_only):
path_templates = PathTemplates(input_filename, source_dir, working_dir)
for page in itertools.count():
# Loop through the generated page images. Stop when there is a page
# missing a png, which means the document ended.
actual_path = path_templates.GetActualPath(page)
if not os.path.isfile(actual_path):
break
platform_expected_path = path_templates.GetPlatformExpectedPath(
self.os_name, page)
# If there is a platform expected png, we will overwrite it. Otherwise,
# overwrite the generic png in "all" mode, or do nothing in "platform"
# mode.
if os.path.exists(platform_expected_path):
expected_path = platform_expected_path
elif not platform_only:
expected_path = path_templates.GetExpectedPath(page)
else:
continue
shutil.copyfile(actual_path, expected_path)
common.RunCommand(['optipng', expected_path])
ACTUAL_TEMPLATE = '.pdf.%d.png'
EXPECTED_TEMPLATE = '_expected' + ACTUAL_TEMPLATE
PLATFORM_EXPECTED_TEMPLATE = '_expected_%s' + ACTUAL_TEMPLATE
class PathTemplates(object):
def __init__(self, input_filename, source_dir, working_dir):
input_root, _ = os.path.splitext(input_filename)
self.actual_path_template = os.path.join(working_dir,
input_root + ACTUAL_TEMPLATE)
self.expected_path = os.path.join(source_dir,
input_root + EXPECTED_TEMPLATE)
self.platform_expected_path = os.path.join(
source_dir, input_root + PLATFORM_EXPECTED_TEMPLATE)
def GetActualPath(self, page):
return self.actual_path_template % page
def GetExpectedPath(self, page):
return self.expected_path % page
def GetPlatformExpectedPath(self, platform, page):
return self.platform_expected_path % (platform, page)
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