Added env lexer and printer

src/Parser/EnvLexer.php

@@ -0,0 +1,94 @@
+<?php
+
+namespace Winter\LaravelConfigWriter\Parser;
+
+use Winter\LaravelConfigWriter\Contracts\DataFileLexerInterface;
+use Winter\LaravelConfigWriter\Exceptions\EnvParserException;
+
+class EnvLexer implements DataFileLexerInterface
+{
+ public const T_ENV = 'T_ENV';
+ public const T_QUOTED_ENV = 'T_QUOTED_ENV';
+ public const T_ENV_NO_VALUE = 'T_ENV_NO_VALUE';
+ public const T_WHITESPACE = 'T_WHITESPACE';
+ public const T_COMMENT = 'T_COMMENT';
+
+ protected $tokenMap = [
+ '/^([\w]*)="?(.+)["|$]/' => self::T_QUOTED_ENV,
+ '/^([\w]*)="?(.*)(?:"|$)/' => self::T_ENV,
+ '/^(\w+)/' => self::T_ENV_NO_VALUE,
+ '/^(\s+)/' => self::T_WHITESPACE,
+ '/(#[\w\s]).*/' => self::T_COMMENT,
+ ];
+
+ public function parse(array $src): array
+ {
+ $tokens = [];
+
+ foreach ($src as $line => $str) {
+ $read = 0;
+ do {
+ $result = $this->match($str, $line, $read);
+
+ if (is_null($result)) {
+ throw new EnvParserException("Unable to parse line " . ($line + 1) . ".");
+ }
+
+ $tokens[] = $result;
+
+ $read += strlen($result['match']);
+ } while ($read < strlen($str));
+ }
+
+ return $tokens;
+ }
+
+ public function match(string $str, int $line, int $offset): ?array
+ {
+ $str = substr($str, $offset);
+
+ foreach ($this->tokenMap as $pattern => $name) {
+ if (!preg_match($pattern, $str, $matches)) {
+ continue;
+ }
+
+ switch ($name) {
+ case static::T_ENV:
+ case static::T_QUOTED_ENV:
+ return [
+ 'match' => $matches[0],
+ 'env' => [
+ 'key' => $matches[1],
+ 'value' => $matches[2],
+ ],
+ 'token' => $name,
+ 'line' => $line + 1
+ ];
+ case static::T_ENV_NO_VALUE:
+ return [
+ 'match' => $matches[0],
+ 'env' => [
+ 'key' => $matches[1],
+ 'value' => '',
+ ],
+ 'token' => $name,
+ 'line' => $line + 1
+ ];
+ case static::T_COMMENT:
+ return [
+ 'match' => $matches[0],
+ 'token' => $name,
+ 'line' => $line + 1
+ ];
+ case static::T_WHITESPACE:
+ return [
+ 'match' => $matches[1],
+ 'token' => $name,
+ 'line' => $line + 1
+ ];
+ }
+ }
+
+ return null;
+ }
+}

src/Printer/EnvPrinter.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Winter\LaravelConfigWriter\Printer;
+
+use Winter\LaravelConfigWriter\Contracts\DataFilePrinterInterface;
+use Winter\LaravelConfigWriter\Parser\EnvLexer;
+
+class EnvPrinter implements DataFilePrinterInterface
+{
+ public function render(array $ast): string
+ {
+ $output = '';
+
+ foreach ($ast as $item) {
+ switch ($item['token']) {
+ case EnvLexer::T_ENV:
+ $output .= sprintf('%s=%s', $item['env']['key'], $item['env']['value']);
+ break;
+ case EnvLexer::T_QUOTED_ENV:
+ $output .= sprintf('%s="%s"', $item['env']['key'], $item['env']['value']);
+ break;
+ case EnvLexer::T_ENV_NO_VALUE:
+ $output .= $item['env']['key'];
+ break;
+ case EnvLexer::T_COMMENT:
+ case EnvLexer::T_WHITESPACE:
+ $output .= $item['match'];
+ break;
+ }
+ }
+
+ return $output;
+ }
+}