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<?php |
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namespace Honeybadger; |
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use SplFileObject; |
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class FileSource |
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{ |
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/** |
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* @var string |
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*/ |
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protected $filename; |
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/** |
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* @var int |
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*/ |
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protected $lineNumber; |
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/** |
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* @var int |
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*/ |
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protected $radius; |
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/** |
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* @param string $filename |
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* @param int $lineNumber |
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* @param int $radius |
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*/ |
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public function __construct(string $filename, int $lineNumber, int $radius = 4) |
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{ |
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$this->filename = $filename; |
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$this->lineNumber = $lineNumber < 0 ? 0 : $lineNumber; |
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$this->radius = $radius; |
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} |
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/** |
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* @return array |
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*/ |
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public function getSource() : array |
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{ |
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if (! $this->canReadFile()) { |
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return []; |
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} |
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return array_slice( |
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$this->fileLines($this->readFile()), |
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$this->startingLineNumber(), |
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($this->radius * 2) + 1, |
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$preserveKeys = true |
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); |
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} |
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/** |
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* @param string $line |
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* @return string |
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*/ |
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private function trimLine(string $line) : string |
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{ |
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$trimmed = trim($line, "\n\r\0\x0B"); |
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return preg_replace(['/\s*$/D', '/\t/'], ['', ' '], $trimmed); |
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} |
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/** |
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* @return bool |
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*/ |
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private function canReadFile() : bool |
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{ |
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return is_file($this->filename) && is_readable($this->filename); |
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} |
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/** |
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* @return \SplFileObject |
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*/ |
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private function readFile() : SplFileObject |
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{ |
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return new SplFileObject($this->filename, 'r'); |
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} |
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/** |
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* @param \SplFileObject $file |
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* @return array |
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*/ |
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private function fileLines(SplFileObject $file) : array |
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{ |
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$lines = []; |
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while (! $file->eof()) { |
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$lines[] = $this->trimLine($file->fgets()); |
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} |
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// Set the array to base 1 so it actually reflects the line number of code |
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array_unshift($lines, null); |
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unset($lines[0]); |
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return $lines; |
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} |
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/** |
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* @return int |
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*/ |
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private function startingLineNumber() : int |
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{ |
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$start = $this->lineNumber - ($this->radius + 1); |
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return $start >= 0 ? $start : 0; |
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} |
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} |
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honeybadger-io /
honeybadger-php
