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78 lines
2.5 KiB
PHP
78 lines
2.5 KiB
PHP
<?php
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/*
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* Copyright 2018 Google LLC
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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namespace Google\ApiCore;
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/**
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* @internal
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*/
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class Version
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{
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/**
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* @var ?string
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*/
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private static $version = null;
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/**
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* @return string The version of the ApiCore library.
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*/
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public static function getApiCoreVersion()
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{
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if (is_null(self::$version)) {
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$versionFile = implode(DIRECTORY_SEPARATOR, [__DIR__, '..', 'VERSION']);
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self::$version = self::readVersionFile($versionFile);
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}
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return self::$version;
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}
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/**
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* Reads a VERSION file and returns the contents. If the file does not
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* exist, returns "".
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*
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* @param string $file
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* @return string
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*/
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public static function readVersionFile(string $file)
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{
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$versionString = file_exists($file)
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? (string) file_get_contents($file)
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: "";
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return trim($versionString);
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}
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/**
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* Private constructor.
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*/
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private function __construct()
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{
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}
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}
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