CSFCloud\TempFiles\TempFile::getLastLines()

Complexity

Conditions	6
Paths	9

Size

Total Lines	26
Code Lines	17

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	42

Importance

Changes

0

<?php
    public function getLastLines(int $lines = 10, $buffer = 4096) : string {
        $f = fopen($this->full_path, "rb");
        if ($f === false) {
            throw new Exception("Cant open file");
        }

        fseek($f, -1, SEEK_END);
        if (fread($f, 1) != "\n") {
            $lines -= 1;
        }
        $output = '';

        while (ftell($f) > 0 && $lines >= 0) {
            $seek = min(ftell($f), $buffer);
            fseek($f, -$seek, SEEK_CUR);
            $output = ($chunk = fread($f, $seek)) . $output;
            fseek($f, -mb_strlen($chunk, '8bit'), SEEK_CUR);
            $lines -= substr_count($chunk, "\n");
        }

        while ($lines++ < 0) {
            $output = substr($output, strpos($output, "\n") + 1);
        }
    
        fclose($f);
        return $output;
    }
}