111 lines
3.3 KiB
PHP
111 lines
3.3 KiB
PHP
<?php
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declare(strict_types=1);
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namespace CoreLibs\Get;
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class DotEnv
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{
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/** @var string constant comment char, set to # */
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private const COMMENT_CHAR = '#';
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/**
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* parses .env file
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*
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* Rules for .env file
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* variable is any alphanumeric string followed by = on the same line
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* content starts with the first non space part
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* strings can be contained in "
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* strings MUST be contained in " if they are multiline
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* if string starts with " it will match until another " is found
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* anything AFTER " is ignored
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* if there are two variables with the same name only the first is used
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* variables are case sensitive
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*
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* @param string $path Folder to file, default is __DIR__
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* @param string $env_file What file to load, default is .env
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* @return int -1 other error
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* 0 for success full load
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* 1 for file loadable, no data or data already loaded
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* 2 for file not readable or open failed
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* 3 for file not found
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*/
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public static function readEnvFile(
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string $path = __DIR__,
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string $env_file = '.env'
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): int {
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// default -1;
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$status = -1;
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$env_file_target = $path . DIRECTORY_SEPARATOR . $env_file;
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// this is not a file -> abort
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if (!is_file($env_file_target)) {
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$status = 3;
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return $status;
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}
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// cannot open file -> abort
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if (!is_readable($env_file_target)) {
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$status = 2;
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return $status;
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}
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// open file
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if (($fp = fopen($env_file_target, 'r')) === false) {
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$status = 2;
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return $status;
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}
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// set to readable but not yet any data loaded
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$status = 1;
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$block = false;
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$var = '';
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while ($line = fgets($fp)) {
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// main match for variable = value part
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if (preg_match("/^\s*([\w_.]+)\s*=\s*((\"?).*)/", $line, $matches)) {
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$var = $matches[1];
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$value = $matches[2];
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$quotes = $matches[3];
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// write only if env is not set yet, and write only the first time
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if (empty($_ENV[$var])) {
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if (!empty($quotes)) {
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// match greedy for first to last so we move any " if there are
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if (preg_match('/^"(.*[^\\\])"/U', $value, $matches)) {
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$value = $matches[1];
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} else {
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// this is a multi line
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$block = true;
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// first " in string remove
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// add removed new line back because this is a multi line
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$value = ltrim($value, '"') . PHP_EOL;
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}
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} else {
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// strip any quotes at end for unquoted single line
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// an right hand spaces are removed too
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$value = false !== ($pos = strpos($value, self::COMMENT_CHAR)) ?
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rtrim(substr($value, 0, $pos)) : $value;
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}
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// if block is set, we strip line of slashes
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$_ENV[$var] = $block === true ? stripslashes($value) : $value;
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// set successful load
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$status = 0;
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}
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} elseif ($block === true) {
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// read line until there is a unescaped "
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// this also strips everything after the last "
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if (preg_match("/(.*[^\\\])\"/", $line, $matches)) {
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$block = false;
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// strip ending " and EVERYTHING that follows after that
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$line = $matches[1];
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}
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// just be sure it is init before we fill
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if (!isset($_ENV[$var])) {
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$_ENV[$var] = '';
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}
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// strip line of slashes
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$_ENV[$var] .= stripslashes($line);
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}
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}
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fclose($fp);
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return $status;
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}
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}
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// __END__
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