| # Copyright (C) 2012 Balazs Ankes (bank@inf.u-szeged.hu) University of Szeged |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # 1. Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # 2. 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. |
| # |
| # 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 |
| # OWNER 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. |
| """Supports checking WebKit style in png files.""" |
| |
| from blinkpy.common import read_checksum_from_png |
| from blinkpy.common.system.system_host import SystemHost |
| |
| |
| class PNGChecker(object): |
| |
| categories = set(['image/png']) |
| |
| def __init__(self, file_path, handle_style_error, host=None): |
| self._file_path = file_path |
| self._handle_style_error = handle_style_error |
| self._host = host or SystemHost() |
| self._fs = self._host.filesystem |
| |
| def check(self, inline=None): |
| if self._fs.exists( |
| self._file_path) and self._file_path.endswith('-expected.png'): |
| with self._fs.open_binary_file_for_reading( |
| self._file_path) as filehandle: |
| if not read_checksum_from_png.read_checksum(filehandle): |
| self._handle_style_error( |
| 0, 'image/png', 5, |
| 'Image lacks a checksum. Generate pngs using run_web_tests.py to ensure they have a checksum.' |
| ) |
