Lib\Env\Parser\DotenvParser

Complexity

Total Complexity

14

Size/Duplication

Total Lines	63
Duplicated Lines	0 %

Test Coverage

Coverage

0%

Importance

Changes

0

5 Methods

Rating	Name	Duplication	Size	Complexity
A	lexName()	0	6	2
A	lexValue()	0	13	5
A	isQuoted()	0	3	1
A	parse()	0	18	4
A	emptyLine()	0	6	2

<?php

namespace Lib\Env\Parser;

use Lib\Env\Exception\FormatException;

class DotenvParser implements EnvParserInterface
{
    private const REGEX_VARNAME = '(export[ \t]++)?((?i:[A-Z][A-Z0-9_]*+))';
    private const REGEX_QUOTED = '/["\']+(?:.*)["\']+$/A';
    private const REGEX_EMPTY_OR_COMMENT = '(?:\s*+(?:#[^\n]*+)?+)++';

    public function parse(string $data): array
    {
        $values = [];
        $lines = explode("\n", $data);
        foreach ($lines as $line) {
            if ($this->emptyLine($line)) {
                continue;
            }
            [$name, $value] = explode('=', $line, 2);
            try {
                $this->lexName($name);
                $this->lexValue($value);
            } catch (\Exception $e) {
                throw $e;
            }
            $values[$name] = $value;
        }
        return $values;
    }

    private function emptyLine(string $line): bool
    {
        if (preg_match('/'.self::REGEX_EMPTY_OR_COMMENT.'/A', $line)) {
            return true;
        }
        return false;
    }

    private function lexName(string $name): string
    {
        if (!preg_match(self::REGEX_VARNAME, $name, $matches)) {
            throw new FormatException('name', $name);
        }
        return $matches[2];
    }

    private function lexValue(string $value): string
    {
        // strip inline comments on the right hand side
        $value = explode(' #', $value, 2)[0];

        if ($this->isQuoted($value)) {
            // strip quotes
            $value = substr(substr($value, 0, -1), 1);

            $pos = strpos($value, '"');
            if (0 !== $pos && \strlen($value) - 1 !== $pos) {
                if ($value{$pos - 1} !== '\\') {
                    throw new FormatException('value', $value);
                }

The function implicitly returns null when the if condition on line 60 is false. This is incompatible with the type-hinted return string. Consider adding a return statement or allowing null as return value.

            }
        }
    }

    private function isQuoted(string $value): bool
    {
        return (bool) preg_match(self::REGEX_QUOTED, $value);
    }
}