/home/kueuepay/public_html/vendor/vlucas/phpdotenv/src/Parser/EntryParser.php
<?php
declare(strict_types=1);
namespace Dotenv\Parser;
use Dotenv\Util\Regex;
use Dotenv\Util\Str;
use GrahamCampbell\ResultType\Error;
use GrahamCampbell\ResultType\Result;
use GrahamCampbell\ResultType\Success;
final class EntryParser
{
private const INITIAL_STATE = 0;
private const UNQUOTED_STATE = 1;
private const SINGLE_QUOTED_STATE = 2;
private const DOUBLE_QUOTED_STATE = 3;
private const ESCAPE_SEQUENCE_STATE = 4;
private const WHITESPACE_STATE = 5;
private const COMMENT_STATE = 6;
private const REJECT_STATES = [self::SINGLE_QUOTED_STATE, self::DOUBLE_QUOTED_STATE, self::ESCAPE_SEQUENCE_STATE];
/**
* This class is a singleton.
*
* @codeCoverageIgnore
*
* @return void
*/
private function __construct()
{
//
}
/**
* Parse a raw entry into a proper entry.
*
* That is, turn a raw environment variable entry into a name and possibly
* a value. We wrap the answer in a result type.
*
* @param string $entry
*
* @return \GrahamCampbell\ResultType\Result<\Dotenv\Parser\Entry,string>
*/
public static function parse(string $entry)
{
return self::splitStringIntoParts($entry)->flatMap(static function (array $parts) {
[$name, $value] = $parts;
return self::parseName($name)->flatMap(static function (string $name) use ($value) {
/** @var Result<Value|null,string> */
$parsedValue = $value === null ? Success::create(null) : self::parseValue($value);
return $parsedValue->map(static function (?Value $value) use ($name) {
return new Entry($name, $value);
});
});
});
}
/**
* Split the compound string into parts.
*
* @param string $line
*
* @return \GrahamCampbell\ResultType\Result<array{string,string|null},string>
*/
private static function splitStringIntoParts(string $line)
{
/** @var array{string,string|null} */
$result = Str::pos($line, '=')->map(static function () use ($line) {
return \array_map('trim', \explode('=', $line, 2));
})->getOrElse([$line, null]);
if ($result[0] === '') {
/** @var \GrahamCampbell\ResultType\Result<array{string,string|null},string> */
return Error::create(self::getErrorMessage('an unexpected equals', $line));
}
/** @var \GrahamCampbell\ResultType\Result<array{string,string|null},string> */
return Success::create($result);
}
/**
* Parse the given variable name.
*
* That is, strip the optional quotes and leading "export" from the
* variable name. We wrap the answer in a result type.
*
* @param string $name
*
* @return \GrahamCampbell\ResultType\Result<string,string>
*/
private static function parseName(string $name)
{
if (Str::len($name) > 8 && Str::substr($name, 0, 6) === 'export' && \ctype_space(Str::substr($name, 6, 1))) {
$name = \ltrim(Str::substr($name, 6));
}
if (self::isQuotedName($name)) {
$name = Str::substr($name, 1, -1);
}
if (!self::isValidName($name)) {
/** @var \GrahamCampbell\ResultType\Result<string,string> */
return Error::create(self::getErrorMessage('an invalid name', $name));
}
/** @var \GrahamCampbell\ResultType\Result<string,string> */
return Success::create($name);
}
/**
* Is the given variable name quoted?
*
* @param string $name
*
* @return bool
*/
private static function isQuotedName(string $name)
{
if (Str::len($name) < 3) {
return false;
}
$first = Str::substr($name, 0, 1);
$last = Str::substr($name, -1, 1);
return ($first === '"' && $last === '"') || ($first === '\'' && $last === '\'');
}
/**
* Is the given variable name valid?
*
* @param string $name
*
* @return bool
*/
private static function isValidName(string $name)
{
return Regex::matches('~(*UTF8)\A[\p{Ll}\p{Lu}\p{M}\p{N}_.]+\z~', $name)->success()->getOrElse(false);
}
/**
* Parse the given variable value.
*
* This has the effect of stripping quotes and comments, dealing with
* special characters, and locating nested variables, but not resolving
* them. Formally, we run a finite state automaton with an output tape: a
* transducer. We wrap the answer in a result type.
*
* @param string $value
*
* @return \GrahamCampbell\ResultType\Result<\Dotenv\Parser\Value,string>
*/
private static function parseValue(string $value)
{
if (\trim($value) === '') {
/** @var \GrahamCampbell\ResultType\Result<\Dotenv\Parser\Value,string> */
return Success::create(Value::blank());
}
return \array_reduce(\iterator_to_array(Lexer::lex($value)), static function (Result $data, string $token) {
return $data->flatMap(static function (array $data) use ($token) {
return self::processToken($data[1], $token)->map(static function (array $val) use ($data) {
return [$data[0]->append($val[0], $val[1]), $val[2]];
});
});
}, Success::create([Value::blank(), self::INITIAL_STATE]))->flatMap(static function (array $result) {
/** @psalm-suppress DocblockTypeContradiction */
if (in_array($result[1], self::REJECT_STATES, true)) {
/** @var \GrahamCampbell\ResultType\Result<\Dotenv\Parser\Value,string> */
return Error::create('a missing closing quote');
}
/** @var \GrahamCampbell\ResultType\Result<\Dotenv\Parser\Value,string> */
return Success::create($result[0]);
})->mapError(static function (string $err) use ($value) {
return self::getErrorMessage($err, $value);
});
}
/**
* Process the given token.
*
* @param int $state
* @param string $token
*
* @return \GrahamCampbell\ResultType\Result<array{string,bool,int},string>
*/
private static function processToken(int $state, string $token)
{
switch ($state) {
case self::INITIAL_STATE:
if ($token === '\'') {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create(['', false, self::SINGLE_QUOTED_STATE]);
} elseif ($token === '"') {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create(['', false, self::DOUBLE_QUOTED_STATE]);
} elseif ($token === '#') {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create(['', false, self::COMMENT_STATE]);
} elseif ($token === '$') {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create([$token, true, self::UNQUOTED_STATE]);
} else {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create([$token, false, self::UNQUOTED_STATE]);
}
case self::UNQUOTED_STATE:
if ($token === '#') {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create(['', false, self::COMMENT_STATE]);
} elseif (\ctype_space($token)) {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create(['', false, self::WHITESPACE_STATE]);
} elseif ($token === '$') {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create([$token, true, self::UNQUOTED_STATE]);
} else {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create([$token, false, self::UNQUOTED_STATE]);
}
case self::SINGLE_QUOTED_STATE:
if ($token === '\'') {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create(['', false, self::WHITESPACE_STATE]);
} else {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create([$token, false, self::SINGLE_QUOTED_STATE]);
}
case self::DOUBLE_QUOTED_STATE:
if ($token === '"') {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create(['', false, self::WHITESPACE_STATE]);
} elseif ($token === '\\') {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create(['', false, self::ESCAPE_SEQUENCE_STATE]);
} elseif ($token === '$') {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create([$token, true, self::DOUBLE_QUOTED_STATE]);
} else {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create([$token, false, self::DOUBLE_QUOTED_STATE]);
}
case self::ESCAPE_SEQUENCE_STATE:
if ($token === '"' || $token === '\\') {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create([$token, false, self::DOUBLE_QUOTED_STATE]);
} elseif ($token === '$') {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create([$token, false, self::DOUBLE_QUOTED_STATE]);
} else {
$first = Str::substr($token, 0, 1);
if (\in_array($first, ['f', 'n', 'r', 't', 'v'], true)) {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create([\stripcslashes('\\'.$first).Str::substr($token, 1), false, self::DOUBLE_QUOTED_STATE]);
} else {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Error::create('an unexpected escape sequence');
}
}
case self::WHITESPACE_STATE:
if ($token === '#') {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create(['', false, self::COMMENT_STATE]);
} elseif (!\ctype_space($token)) {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Error::create('unexpected whitespace');
} else {
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create(['', false, self::WHITESPACE_STATE]);
}
case self::COMMENT_STATE:
/** @var \GrahamCampbell\ResultType\Result<array{string,bool,int},string> */
return Success::create(['', false, self::COMMENT_STATE]);
default:
throw new \Error('Parser entered invalid state.');
}
}
/**
* Generate a friendly error message.
*
* @param string $cause
* @param string $subject
*
* @return string
*/
private static function getErrorMessage(string $cause, string $subject)
{
return \sprintf(
'Encountered %s at [%s].',
$cause,
\strtok($subject, "\n")
);
}
}
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About NFC Pay: Our Story and Mission
NFC Pay was founded with a vision to transform the way people handle transactions. Our journey is defined by a commitment to innovation, security, and convenience. We strive to deliver seamless, user-friendly payment solutions that make everyday transactions effortless and secure. Our mission is to empower you to pay with ease and confidence, anytime, anywhere.
Simplifying Payments, One Tap at a Time.
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Experience the Ease of Tap and Pay.
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Frequently Asked Questions About NFC Pay
Here are answers to some common questions about NFC Pay. We aim to provide clear and concise information to help you understand how our platform works and how it can benefit you. If you have any further inquiries, please don’t hesitate to contact our support team.
How do I register for NFC Pay?
Download the app and sign up using your email or phone number, then complete the verification process.
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Can I add multiple cards to my NFC Pay wallet?
Absolutely, you can link multiple debit or credit cards to your wallet.
How do I transfer money to another user?
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What should I do if I forget my PIN?
Use the “Forgot PIN” feature in the app to reset it following the provided instructions.
How can I activate my merchant account?
Sign up for a merchant account through the app and follow the setup instructions to start accepting payments.
Can I track my payment status?
Yes, you can view and track your payment status in the account dashboard
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