#!/usr/bin/env python

# -*- coding: utf-8 -*-

#

# Copyright (C) 2019 Apple Inc. All rights reserved.

#

# 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 APPLE INC. ``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 APPLE INC. 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.

# Class for representing SDK information, in the form of Platform, Version, and

# whether or not it's an Internal SDK. This class also contains a factory

# method for producing an SDK instance from a "specification" string such as

# "macOS15.3Internal", like you would get from 'xcodebuild -showsdks".

import re

from webkitpy.common.system.executive import Executive

test_output = None

class SDK(object):

__slots__ = ["xcode_specification", "platform", "version", "internal"]

def __init__(self, xcode_specification, platform, version, internal):

super(SDK, self).__init__()

self.xcode_specification = xcode_specification

self.platform = platform

self.version = version

self.internal = internal

def __repr__(self):

return "SDK({}, {}, {}, {})".format(

self.xcode_specification,

self.platform,

self.version,

self.internal)

def as_xcode_specification(self):

return "{}.internal".format(self.platform) if self.internal else self.platform

@classmethod

def get_preferred_sdk_for_platform(cls, platform, executive=None):

preferred_sdk = cls._parse_sdk(platform)

executive = executive or Executive()

stdout = executive.run_command(["xcodebuild", "-showsdks"])

for line in stdout.splitlines():

m = re.match(r".*-sdk (.*)", line)

if m:

this_sdk = cls._parse_sdk(m.group(1))

if preferred_sdk.platform != this_sdk.platform:

continue

# Both have version information, so compare versions. If the

# versions are equal, prefer the Internal sdk. Otherwise, keep

# the one with the higher version.

if preferred_sdk.version and this_sdk.version:

if float(preferred_sdk.version) == float(this_sdk.version):

if this_sdk.internal:

preferred_sdk = this_sdk

elif float(preferred_sdk.version) < float(this_sdk.version):

preferred_sdk = this_sdk

# The preferred sdk does not have a version but the prospective

# one does, so keep the prospective one.

elif not preferred_sdk.version and this_sdk.version:

preferred_sdk = this_sdk

# The preferred sdk has a version but the prospective one does

# not, so keep the preferred one.

elif preferred_sdk.version and not this_sdk.version:

pass

# Neither has version information; prefer the current one if

# it's internal.

elif not preferred_sdk.version and not this_sdk.version:

if this_sdk.internal:

preferred_sdk = this_sdk

return preferred_sdk

@classmethod

def _parse_sdk(cls, xcode_specification):

# letters-and-dots, followed by optional numbers-and-dots, followed by

# an optional "internal"

m = re.match(r"([a-zA-Z.]+[a-zA-Z])([0-9.]+[0-9])?\.?(internal)?", xcode_specification)

if not m:

return SDK(xcode_specification, None, None, None)

platform = m.group(1)

version = m.group(2)

internal = m.group(3)

return SDK(xcode_specification, platform, version, internal)