Setup project

.gitattributes

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+.gitattributes export-ignore
+.gitignore export-ignore
+composer.lock export-ignore
+phpunit.xml.dist export-ignore
+
+* text eol=lf

.github/workflows/continuous-integration.yml

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+name: Testing
+on: [push]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php-versions:
+          - 5.3
+          - 5.4
+          - 5.5
+          - 5.6
+          - 7.0
+          - 7.1
+          - 7.2
+          - 7.3
+          - 7.4
+          - 8.0
+        dependency-levels:
+          - 'highest'
+        experimental:
+          - false
+        include:
+          - php-versions: 5.4
+            dependency-levels: 'lowest'
+            experimental: false
+    continue-on-error: ${{ matrix.experimental }}
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Setup PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: ${{ matrix.php-versions }}
+
+    - name: Validating PHP syntax
+      run: find ./tests/ -type f -name '*.php' -print0 | xargs -0 -L 1 -P 4 -- php -l
+
+    - name: Validate composer.json and composer.lock
+      run: composer validate
+
+      # Because PHPCS 3 requires PHP 5.4
+    - run: composer require --dev -W squizlabs/php_codesniffer:^2.0 symfony/yaml:^2.0 phpdocumentor/reflection-docblock:^2.0
+      if: matrix.php-versions == '5.3'
+
+    - name: Install dependencies
+      uses: ramsey/composer-install@v1
+      with:
+        dependency-versions: "${{ matrix.dependency-levels }}"
+        composer-options: "--prefer-dist"
+
+    - name: PhpUnit
+      run: ./vendor/bin/phpunit
+
+    - name: PHPCS
+      run: ./vendor/bin/phpcs -s --report-source --runtime-set ignore_warnings_on_exit 1
+      # Because PHPCS 2 does not have PSR-12 rule
+      if: matrix.php-versions != '5.3'

.gitignore

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+/vendor/
+/.idea
+/.env
+/.env.example
+/docker/
+/docker-compose.yml
+/.editorconfig
+/.phpunit.result.cache

CHANGELOG.md

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+# Change log
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/)
+and this project adheres to [Semantic Versioning](http://semver.org/).
+
+## [[*next-version*]] - YYYY-MM-DD
+Initial release. This ports the test for and from [`psr/log`][], according to
+[decision][1].
+
+
+[`psr/log`]: https://packagist.org/packages/psr/log
+[1]: https://github.com/php-fig/log/pull/76#issuecomment-858743302

README.md

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+# PSR - Log Util
+Utilities for the [`psr/log`][] package that backs the [PSR-3][] specification.
+
+
+[`psr/log`]: https://packagist.org/packages/psr/log
+[PSR-3]: https://www.php-fig.org/psr/psr-3/

composer.json

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+{
+  "name": "psr/log-util",
+  "description": "Utilities for the psr/log package that backs the PSR-3 specification.",
+  "minimum-stability": "dev",
+  "license": "MIT",
+  "authors": [
+    {
+      "name": "PHP-FIG",
+      "homepage": "https://www.php-fig.org/",
+      "role": "Organisation"
+    },
+    {
+      "name": "Anton Ukhanev",
+      "email": "xedin.unknown@gmail.com",
+      "role": "Developer"
+    }
+  ],
+  "require": {
+    "php": "^5.3 | ^7.0 | ^8.0",
+    "psr/log": "^1.1.4"
+  },
+  "require-dev": {
+    "phpunit/phpunit": "^4.0 | ^5.0 | ^6.0 | ^7.0 | ^8.0 | ^9.0",
+    "squizlabs/php_codesniffer": "^3.6"
+  },
+  "autoload": {
+    "psr-4": {
+      "Psr\\Log\\Util\\": "src"
+    }
+  },
+  "autoload-dev": {
+    "psr-4": {
+      "Psr\\Log\\Util\\Tests\\": "tests"
+    }
+  }
+}