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      1 # Copyright (C) 2010 Apple Inc. All rights reserved.
      2 #
      3 # Redistribution and use in source and binary forms, with or without
      4 # modification, are permitted provided that the following conditions
      5 # are met:
      6 # 1.  Redistributions of source code must retain the above copyright
      7 #     notice, this list of conditions and the following disclaimer.
      8 # 2.  Redistributions in binary form must reproduce the above copyright
      9 #     notice, this list of conditions and the following disclaimer in the
     10 #     documentation and/or other materials provided with the distribution.
     11 #
     12 # THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
     13 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     14 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     15 # DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR
     16 # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     17 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     18 # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
     19 # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     20 # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     21 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     22 
     23 """Functions relating to building WebKit"""
     24 
     25 import re
     26 
     27 
     28 def _should_file_trigger_build(target_platform, file):
     29     # The directories and patterns lists below map directory names or
     30     # regexp patterns to the bot platforms for which they should trigger a
     31     # build. Mapping to the empty list means that no builds should be
     32     # triggered on any platforms. Earlier directories/patterns take
     33     # precendence over later ones.
     34 
     35     # FIXME: The patterns below have only been verified to be correct on
     36     # the platforms listed below. We should implement this for other platforms
     37     # and start using it for their bots. Someone familiar with each platform
     38     # will have to figure out what the right set of directories/patterns is for
     39     # that platform.
     40     assert(target_platform in ("mac-leopard", "mac-snowleopard", "win"))
     41 
     42     directories = [
     43         # Directories that shouldn't trigger builds on any bots.
     44         ("Examples", []),
     45         ("PerformanceTests", []),
     46         ("Source/WebCore/manual-tests", []),
     47         ("Tools/BuildSlaveSupport/build.webkit.org-config/public_html", []),
     48         ("Websites", []),
     49         ("android", []),
     50         ("brew", []),
     51         ("efl", []),
     52         ("haiku", []),
     53         ("iphone", []),
     54         ("opengl", []),
     55         ("opentype", []),
     56         ("openvg", []),
     57         ("wince", []),
     58         ("wx", []),
     59 
     60         # Directories that should trigger builds on only some bots.
     61         ("Source/JavaScriptGlue", ["mac"]),
     62         ("Source/WebCore/image-decoders", ["chromium"]),
     63         ("LayoutTests/platform/mac", ["mac", "win"]),
     64         ("cairo", ["gtk", "wincairo"]),
     65         ("cf", ["chromium-mac", "mac", "qt", "win"]),
     66         ("chromium", ["chromium"]),
     67         ("cocoa", ["chromium-mac", "mac"]),
     68         ("curl", ["gtk", "wincairo"]),
     69         ("gobject", ["gtk"]),
     70         ("gpu", ["chromium", "mac"]),
     71         ("gstreamer", ["gtk"]),
     72         ("gtk", ["gtk"]),
     73         ("mac", ["chromium-mac", "mac"]),
     74         ("mac-leopard", ["mac-leopard"]),
     75         ("mac-snowleopard", ["mac", "win"]),
     76         ("mac-wk2", ["mac-snowleopard", "win"]),
     77         ("objc", ["mac"]),
     78         ("qt", ["qt"]),
     79         ("skia", ["chromium"]),
     80         ("soup", ["gtk"]),
     81         ("v8", ["chromium"]),
     82         ("win", ["chromium-win", "win"]),
     83     ]
     84     patterns = [
     85         # Patterns that shouldn't trigger builds on any bots.
     86         (r"(?:^|/)ChangeLog.*$", []),
     87         (r"(?:^|/)Makefile$", []),
     88         (r"/ARM", []),
     89         (r"/CMake.*", []),
     90         (r"/LICENSE[^/]+$", []),
     91         (r"ARM(?:v7)?\.(?:cpp|h)$", []),
     92         (r"MIPS\.(?:cpp|h)$", []),
     93         (r"WinCE\.(?:cpp|h|mm)$", []),
     94         (r"\.(?:bkl|mk)$", []),
     95 
     96         # Patterns that should trigger builds on only some bots.
     97         (r"(?:^|/)GNUmakefile\.am$", ["gtk"]),
     98         (r"/\w+Chromium\w*\.(?:cpp|h|mm)$", ["chromium"]),
     99         (r"Mac\.(?:cpp|h|mm)$", ["mac"]),
    100         (r"\.(?:vcproj|vsprops|sln)$", ["win"]),
    101         (r"\.exp(?:\.in)?$", ["mac"]),
    102         (r"\.gypi?", ["chromium"]),
    103         (r"\.order$", ["mac"]),
    104         (r"\.pr[io]$", ["qt"]),
    105         (r"\.vcproj/", ["win"]),
    106         (r"\.xcconfig$", ["mac"]),
    107         (r"\.xcodeproj/", ["mac"]),
    108     ]
    109 
    110     base_platform = target_platform.split("-")[0]
    111 
    112     # See if the file is in one of the known directories.
    113     for directory, platforms in directories:
    114         if re.search(r"(?:^|/)%s/" % directory, file):
    115             return target_platform in platforms or base_platform in platforms
    116 
    117     # See if the file matches a known pattern.
    118     for pattern, platforms in patterns:
    119         if re.search(pattern, file):
    120             return target_platform in platforms or base_platform in platforms
    121 
    122     # See if the file is a platform-specific test result.
    123     match = re.match("LayoutTests/platform/(?P<platform>[^/]+)/", file)
    124     if match:
    125         # See if the file is a test result for this platform, our base
    126         # platform, or one of our sub-platforms.
    127         return match.group("platform") in (target_platform, base_platform) or match.group("platform").startswith("%s-" % target_platform)
    128 
    129     # The file isn't one we know about specifically, so we should assume we
    130     # have to build.
    131     return True
    132 
    133 
    134 def should_build(target_platform, changed_files):
    135     """Returns true if the changed files affect the given platform, and
    136     thus a build should be performed. target_platform should be one of the
    137     platforms used in the build.webkit.org master's config.json file."""
    138     return any(_should_file_trigger_build(target_platform, file) for file in changed_files)
    139