mariano
138 lines
4.0 KiB
PHP
138 lines
4.0 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Jfcherng\Diff\Renderer\Text;
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use Jfcherng\Diff\Exception\UnsupportedFunctionException;
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use Jfcherng\Diff\Renderer\AbstractRenderer;
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use Jfcherng\Diff\Renderer\RendererConstant;
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use Jfcherng\Utility\CliColor;
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/**
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* Base renderer for rendering text-based diffs.
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*/
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abstract class AbstractText extends AbstractRenderer
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{
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/**
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* @var bool is this renderer pure text?
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*/
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public const IS_TEXT_RENDERER = true;
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/**
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* @var string the diff output representing there is no EOL at EOF in the GNU diff tool
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*/
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public const GNU_OUTPUT_NO_EOL_AT_EOF = '\ No newline at end of file';
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/**
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* @var bool controls whether cliColoredString() is enabled or not
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*/
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protected $isCliColorEnabled = false;
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public function setOptions(array $options): AbstractRenderer
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{
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parent::setOptions($options);
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// determine $this->isCliColorEnabled
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if ($this->options['cliColorization'] === RendererConstant::CLI_COLOR_ENABLE) {
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$this->isCliColorEnabled = true;
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} elseif ($this->options['cliColorization'] === RendererConstant::CLI_COLOR_DISABLE) {
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$this->isCliColorEnabled = false;
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} else {
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$this->isCliColorEnabled = \PHP_SAPI === 'cli' && $this->hasColorSupport(\STDOUT);
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}
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return $this;
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}
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public function getResultForIdenticalsDefault(): string
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{
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return '';
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}
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protected function renderArrayWorker(array $differArray): string
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{
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throw new UnsupportedFunctionException(__METHOD__);
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return ''; // make IDE not complain
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}
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/**
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* Colorize the string for CLI output.
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*
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* @param string $str the string
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* @param null|string $symbol the symbol
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*
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* @return string the (maybe) colorized string
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*/
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protected function cliColoredString(string $str, ?string $symbol): string
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{
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static $symbolToStyles = [
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'@' => ['f_purple', 'bold'], // header
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'-' => ['f_red', 'bold'], // deleted
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'+' => ['f_green', 'bold'], // inserted
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'!' => ['f_yellow', 'bold'], // replaced
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];
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$styles = $symbolToStyles[$symbol] ?? [];
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if (!$this->isCliColorEnabled || empty($styles)) {
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return $str;
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}
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return CliColor::color($str, $styles);
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}
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/**
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* Returns true if the stream supports colorization.
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*
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* Colorization is disabled if not supported by the stream:
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*
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* This is tricky on Windows, because Cygwin, Msys2 etc emulate pseudo
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* terminals via named pipes, so we can only check the environment.
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*
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* Reference: Composer\XdebugHandler\Process::supportsColor
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* https://github.com/composer/xdebug-handler
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*
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* @see https://github.com/symfony/console/blob/647c51ff073300a432a4a504e29323cf0d5e0571/Output/StreamOutput.php#L81-L124
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*
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* @param resource $stream
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*
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* @return bool true if the stream supports colorization, false otherwise
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*
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* @suppress PhanUndeclaredFunction
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*/
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protected function hasColorSupport($stream): bool
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{
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// Follow https://no-color.org/
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if (isset($_SERVER['NO_COLOR']) || false !== getenv('NO_COLOR')) {
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return false;
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}
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if ('Hyper' === getenv('TERM_PROGRAM')) {
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return true;
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}
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if (\DIRECTORY_SEPARATOR === '\\') {
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return (\function_exists('sapi_windows_vt100_support')
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&& @sapi_windows_vt100_support($stream))
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|| false !== getenv('ANSICON')
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|| 'ON' === getenv('ConEmuANSI')
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|| 'xterm' === getenv('TERM');
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}
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if (\function_exists('stream_isatty')) {
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return @stream_isatty($stream);
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}
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if (\function_exists('posix_isatty')) {
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return @posix_isatty($stream);
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}
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$stat = @fstat($stream);
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// Check if formatted mode is S_IFCHR
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return $stat ? 0020000 === ($stat['mode'] & 0170000) : false;
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}
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}
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