mirror of
https://github.com/werkraum-media/abtest.git
synced 2024-12-23 05:46:10 +01:00
567 lines
20 KiB
PHP
567 lines
20 KiB
PHP
<?php
|
|
|
|
/*
|
|
* This file is part of the Symfony package.
|
|
*
|
|
* (c) Fabien Potencier <fabien@symfony.com>
|
|
*
|
|
* For the full copyright and license information, please view the LICENSE
|
|
* file that was distributed with this source code.
|
|
*/
|
|
|
|
namespace WapplerSystems\ABTest2\DeviceDetector\Yaml;
|
|
|
|
use Symfony\Component\Yaml\Exception\DumpException;
|
|
|
|
/**
|
|
* Inline implements a YAML parser/dumper for the YAML inline syntax.
|
|
*
|
|
* @author Fabien Potencier <fabien@symfony.com>
|
|
*/
|
|
class Inline
|
|
{
|
|
const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\']*(?:\'\'[^\']*)*)\')';
|
|
|
|
private static $exceptionOnInvalidType = false;
|
|
private static $objectSupport = false;
|
|
private static $objectForMap = false;
|
|
|
|
/**
|
|
* Converts a YAML string to a PHP array.
|
|
*
|
|
* @param string $value A YAML string
|
|
* @param bool $exceptionOnInvalidType true if an exception must be thrown on invalid types (a PHP resource or object), false otherwise
|
|
* @param bool $objectSupport true if object support is enabled, false otherwise
|
|
* @param bool $objectForMap true if maps should return a stdClass instead of array()
|
|
* @param array $references Mapping of variable names to values
|
|
*
|
|
* @return array A PHP array representing the YAML string
|
|
*
|
|
* @throws ParseException
|
|
*/
|
|
public static function parse($value, $exceptionOnInvalidType = false, $objectSupport = false, $objectForMap = false, $references = array())
|
|
{
|
|
self::$exceptionOnInvalidType = $exceptionOnInvalidType;
|
|
self::$objectSupport = $objectSupport;
|
|
self::$objectForMap = $objectForMap;
|
|
|
|
$value = trim($value);
|
|
|
|
if ('' === $value) {
|
|
return '';
|
|
}
|
|
|
|
if (2 /* MB_OVERLOAD_STRING */ & (int) ini_get('mbstring.func_overload')) {
|
|
$mbEncoding = mb_internal_encoding();
|
|
mb_internal_encoding('ASCII');
|
|
}
|
|
|
|
$i = 0;
|
|
switch ($value[0]) {
|
|
case '[':
|
|
$result = self::parseSequence($value, $i, $references);
|
|
++$i;
|
|
break;
|
|
case '{':
|
|
$result = self::parseMapping($value, $i, $references);
|
|
++$i;
|
|
break;
|
|
default:
|
|
$result = self::parseScalar($value, null, array('"', "'"), $i, true, $references);
|
|
}
|
|
|
|
// some comments are allowed at the end
|
|
if (preg_replace('/\s+#.*$/A', '', substr($value, $i))) {
|
|
throw new ParseException(sprintf('Unexpected characters near "%s".', substr($value, $i)));
|
|
}
|
|
|
|
if (isset($mbEncoding)) {
|
|
mb_internal_encoding($mbEncoding);
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Dumps a given PHP variable to a YAML string.
|
|
*
|
|
* @param mixed $value The PHP variable to convert
|
|
* @param bool $exceptionOnInvalidType true if an exception must be thrown on invalid types (a PHP resource or object), false otherwise
|
|
* @param bool $objectSupport true if object support is enabled, false otherwise
|
|
*
|
|
* @return string The YAML string representing the PHP array
|
|
*
|
|
* @throws DumpException When trying to dump PHP resource
|
|
*/
|
|
public static function dump($value, $exceptionOnInvalidType = false, $objectSupport = false)
|
|
{
|
|
switch (true) {
|
|
case is_resource($value):
|
|
if ($exceptionOnInvalidType) {
|
|
throw new DumpException(sprintf('Unable to dump PHP resources in a YAML file ("%s").', get_resource_type($value)));
|
|
}
|
|
|
|
return 'null';
|
|
case is_object($value):
|
|
if ($objectSupport) {
|
|
return '!php/object:'.serialize($value);
|
|
}
|
|
|
|
if ($exceptionOnInvalidType) {
|
|
throw new DumpException('Object support when dumping a YAML file has been disabled.');
|
|
}
|
|
|
|
return 'null';
|
|
case is_array($value):
|
|
return self::dumpArray($value, $exceptionOnInvalidType, $objectSupport);
|
|
case null === $value:
|
|
return 'null';
|
|
case true === $value:
|
|
return 'true';
|
|
case false === $value:
|
|
return 'false';
|
|
case ctype_digit($value):
|
|
return is_string($value) ? "'$value'" : (int) $value;
|
|
case is_numeric($value):
|
|
$locale = setlocale(LC_NUMERIC, 0);
|
|
if (false !== $locale) {
|
|
setlocale(LC_NUMERIC, 'C');
|
|
}
|
|
if (is_float($value)) {
|
|
$repr = (string) $value;
|
|
if (is_infinite($value)) {
|
|
$repr = str_ireplace('INF', '.Inf', $repr);
|
|
} elseif (floor($value) == $value && $repr == $value) {
|
|
// Preserve float data type since storing a whole number will result in integer value.
|
|
$repr = '!!float '.$repr;
|
|
}
|
|
} else {
|
|
$repr = is_string($value) ? "'$value'" : (string) $value;
|
|
}
|
|
if (false !== $locale) {
|
|
setlocale(LC_NUMERIC, $locale);
|
|
}
|
|
|
|
return $repr;
|
|
case '' == $value:
|
|
return "''";
|
|
case Escaper::requiresDoubleQuoting($value):
|
|
return Escaper::escapeWithDoubleQuotes($value);
|
|
case Escaper::requiresSingleQuoting($value):
|
|
case preg_match(self::getHexRegex(), $value):
|
|
case preg_match(self::getTimestampRegex(), $value):
|
|
return Escaper::escapeWithSingleQuotes($value);
|
|
default:
|
|
return $value;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Dumps a PHP array to a YAML string.
|
|
*
|
|
* @param array $value The PHP array to dump
|
|
* @param bool $exceptionOnInvalidType true if an exception must be thrown on invalid types (a PHP resource or object), false otherwise
|
|
* @param bool $objectSupport true if object support is enabled, false otherwise
|
|
*
|
|
* @return string The YAML string representing the PHP array
|
|
*/
|
|
private static function dumpArray($value, $exceptionOnInvalidType, $objectSupport)
|
|
{
|
|
// array
|
|
$keys = array_keys($value);
|
|
$keysCount = count($keys);
|
|
if ((1 === $keysCount && '0' == $keys[0])
|
|
|| ($keysCount > 1 && array_reduce($keys, function ($v, $w) { return (int) $v + $w; }, 0) === $keysCount * ($keysCount - 1) / 2)
|
|
) {
|
|
$output = array();
|
|
foreach ($value as $val) {
|
|
$output[] = self::dump($val, $exceptionOnInvalidType, $objectSupport);
|
|
}
|
|
|
|
return sprintf('[%s]', implode(', ', $output));
|
|
}
|
|
|
|
// mapping
|
|
$output = array();
|
|
foreach ($value as $key => $val) {
|
|
$output[] = sprintf('%s: %s', self::dump($key, $exceptionOnInvalidType, $objectSupport), self::dump($val, $exceptionOnInvalidType, $objectSupport));
|
|
}
|
|
|
|
return sprintf('{ %s }', implode(', ', $output));
|
|
}
|
|
|
|
/**
|
|
* Parses a scalar to a YAML string.
|
|
*
|
|
* @param string $scalar
|
|
* @param string $delimiters
|
|
* @param array $stringDelimiters
|
|
* @param int &$i
|
|
* @param bool $evaluate
|
|
* @param array $references
|
|
*
|
|
* @return string A YAML string
|
|
*
|
|
* @throws ParseException When malformed inline YAML string is parsed
|
|
*
|
|
* @internal
|
|
*/
|
|
public static function parseScalar($scalar, $delimiters = null, $stringDelimiters = array('"', "'"), &$i = 0, $evaluate = true, $references = array())
|
|
{
|
|
if (in_array($scalar[$i], $stringDelimiters)) {
|
|
// quoted scalar
|
|
$output = self::parseQuotedScalar($scalar, $i);
|
|
|
|
if (null !== $delimiters) {
|
|
$tmp = ltrim(substr($scalar, $i), ' ');
|
|
if (!in_array($tmp[0], $delimiters)) {
|
|
throw new ParseException(sprintf('Unexpected characters (%s).', substr($scalar, $i)));
|
|
}
|
|
}
|
|
} else {
|
|
// "normal" string
|
|
if (!$delimiters) {
|
|
$output = substr($scalar, $i);
|
|
$i += strlen($output);
|
|
|
|
// remove comments
|
|
if (preg_match('/[ \t]+#/', $output, $match, PREG_OFFSET_CAPTURE)) {
|
|
$output = substr($output, 0, $match[0][1]);
|
|
}
|
|
} elseif (preg_match('/^(.+?)('.implode('|', $delimiters).')/', substr($scalar, $i), $match)) {
|
|
$output = $match[1];
|
|
$i += strlen($output);
|
|
} else {
|
|
throw new ParseException(sprintf('Malformed inline YAML string (%s).', $scalar));
|
|
}
|
|
|
|
// a non-quoted string cannot start with @ or ` (reserved) nor with a scalar indicator (| or >)
|
|
if ($output && ('@' === $output[0] || '`' === $output[0] || '|' === $output[0] || '>' === $output[0])) {
|
|
throw new ParseException(sprintf('The reserved indicator "%s" cannot start a plain scalar; you need to quote the scalar.', $output[0]));
|
|
}
|
|
|
|
if ($evaluate) {
|
|
$output = self::evaluateScalar($output, $references);
|
|
}
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Parses a quoted scalar to YAML.
|
|
*
|
|
* @param string $scalar
|
|
* @param int &$i
|
|
*
|
|
* @return string A YAML string
|
|
*
|
|
* @throws ParseException When malformed inline YAML string is parsed
|
|
*/
|
|
private static function parseQuotedScalar($scalar, &$i)
|
|
{
|
|
if (!preg_match('/'.self::REGEX_QUOTED_STRING.'/Au', substr($scalar, $i), $match)) {
|
|
throw new ParseException(sprintf('Malformed inline YAML string (%s).', substr($scalar, $i)));
|
|
}
|
|
|
|
$output = substr($match[0], 1, strlen($match[0]) - 2);
|
|
|
|
$unescaper = new Unescaper();
|
|
if ('"' == $scalar[$i]) {
|
|
$output = $unescaper->unescapeDoubleQuotedString($output);
|
|
} else {
|
|
$output = $unescaper->unescapeSingleQuotedString($output);
|
|
}
|
|
|
|
$i += strlen($match[0]);
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Parses a sequence to a YAML string.
|
|
*
|
|
* @param string $sequence
|
|
* @param int &$i
|
|
* @param array $references
|
|
*
|
|
* @return string A YAML string
|
|
*
|
|
* @throws ParseException When malformed inline YAML string is parsed
|
|
*/
|
|
private static function parseSequence($sequence, &$i = 0, $references = array())
|
|
{
|
|
$output = array();
|
|
$len = strlen($sequence);
|
|
++$i;
|
|
|
|
// [foo, bar, ...]
|
|
while ($i < $len) {
|
|
switch ($sequence[$i]) {
|
|
case '[':
|
|
// nested sequence
|
|
$output[] = self::parseSequence($sequence, $i, $references);
|
|
break;
|
|
case '{':
|
|
// nested mapping
|
|
$output[] = self::parseMapping($sequence, $i, $references);
|
|
break;
|
|
case ']':
|
|
return $output;
|
|
case ',':
|
|
case ' ':
|
|
break;
|
|
default:
|
|
$isQuoted = in_array($sequence[$i], array('"', "'"));
|
|
$value = self::parseScalar($sequence, array(',', ']'), array('"', "'"), $i, true, $references);
|
|
|
|
// the value can be an array if a reference has been resolved to an array var
|
|
if (!is_array($value) && !$isQuoted && false !== strpos($value, ': ')) {
|
|
// embedded mapping?
|
|
try {
|
|
$pos = 0;
|
|
$value = self::parseMapping('{'.$value.'}', $pos, $references);
|
|
} catch (\InvalidArgumentException $e) {
|
|
// no, it's not
|
|
}
|
|
}
|
|
|
|
$output[] = $value;
|
|
|
|
--$i;
|
|
}
|
|
|
|
++$i;
|
|
}
|
|
|
|
throw new ParseException(sprintf('Malformed inline YAML string %s', $sequence));
|
|
}
|
|
|
|
/**
|
|
* Parses a mapping to a YAML string.
|
|
*
|
|
* @param string $mapping
|
|
* @param int &$i
|
|
* @param array $references
|
|
*
|
|
* @return string A YAML string
|
|
*
|
|
* @throws ParseException When malformed inline YAML string is parsed
|
|
*/
|
|
private static function parseMapping($mapping, &$i = 0, $references = array())
|
|
{
|
|
$output = array();
|
|
$len = strlen($mapping);
|
|
++$i;
|
|
|
|
// {foo: bar, bar:foo, ...}
|
|
while ($i < $len) {
|
|
switch ($mapping[$i]) {
|
|
case ' ':
|
|
case ',':
|
|
++$i;
|
|
continue 2;
|
|
case '}':
|
|
if (self::$objectForMap) {
|
|
return (object) $output;
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
// key
|
|
$key = self::parseScalar($mapping, array(':', ' '), array('"', "'"), $i, false);
|
|
|
|
// value
|
|
$done = false;
|
|
|
|
while ($i < $len) {
|
|
switch ($mapping[$i]) {
|
|
case '[':
|
|
// nested sequence
|
|
$value = self::parseSequence($mapping, $i, $references);
|
|
// Spec: Keys MUST be unique; first one wins.
|
|
// Parser cannot abort this mapping earlier, since lines
|
|
// are processed sequentially.
|
|
if (!isset($output[$key])) {
|
|
$output[$key] = $value;
|
|
}
|
|
$done = true;
|
|
break;
|
|
case '{':
|
|
// nested mapping
|
|
$value = self::parseMapping($mapping, $i, $references);
|
|
// Spec: Keys MUST be unique; first one wins.
|
|
// Parser cannot abort this mapping earlier, since lines
|
|
// are processed sequentially.
|
|
if (!isset($output[$key])) {
|
|
$output[$key] = $value;
|
|
}
|
|
$done = true;
|
|
break;
|
|
case ':':
|
|
case ' ':
|
|
break;
|
|
default:
|
|
$value = self::parseScalar($mapping, array(',', '}'), array('"', "'"), $i, true, $references);
|
|
// Spec: Keys MUST be unique; first one wins.
|
|
// Parser cannot abort this mapping earlier, since lines
|
|
// are processed sequentially.
|
|
if (!isset($output[$key])) {
|
|
$output[$key] = $value;
|
|
}
|
|
$done = true;
|
|
--$i;
|
|
}
|
|
|
|
++$i;
|
|
|
|
if ($done) {
|
|
continue 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
throw new ParseException(sprintf('Malformed inline YAML string %s', $mapping));
|
|
}
|
|
|
|
/**
|
|
* Evaluates scalars and replaces magic values.
|
|
*
|
|
* @param string $scalar
|
|
* @param array $references
|
|
*
|
|
* @return string A YAML string
|
|
*
|
|
* @throws ParseException when object parsing support was disabled and the parser detected a PHP object or when a reference could not be resolved
|
|
*/
|
|
private static function evaluateScalar($scalar, $references = array())
|
|
{
|
|
$scalar = trim($scalar);
|
|
$scalarLower = strtolower($scalar);
|
|
|
|
if (0 === strpos($scalar, '*')) {
|
|
if (false !== $pos = strpos($scalar, '#')) {
|
|
$value = substr($scalar, 1, $pos - 2);
|
|
} else {
|
|
$value = substr($scalar, 1);
|
|
}
|
|
|
|
// an unquoted *
|
|
if (false === $value || '' === $value) {
|
|
throw new ParseException('A reference must contain at least one character.');
|
|
}
|
|
|
|
if (!array_key_exists($value, $references)) {
|
|
throw new ParseException(sprintf('Reference "%s" does not exist.', $value));
|
|
}
|
|
|
|
return $references[$value];
|
|
}
|
|
|
|
switch (true) {
|
|
case 'null' === $scalarLower:
|
|
case '' === $scalar:
|
|
case '~' === $scalar:
|
|
return;
|
|
case 'true' === $scalarLower:
|
|
return true;
|
|
case 'false' === $scalarLower:
|
|
return false;
|
|
// Optimise for returning strings.
|
|
case $scalar[0] === '+' || $scalar[0] === '-' || $scalar[0] === '.' || $scalar[0] === '!' || is_numeric($scalar[0]):
|
|
switch (true) {
|
|
case 0 === strpos($scalar, '!str'):
|
|
return (string) substr($scalar, 5);
|
|
case 0 === strpos($scalar, '! '):
|
|
return (int) self::parseScalar(substr($scalar, 2));
|
|
case 0 === strpos($scalar, '!php/object:'):
|
|
if (self::$objectSupport) {
|
|
return unserialize(substr($scalar, 12));
|
|
}
|
|
|
|
if (self::$exceptionOnInvalidType) {
|
|
throw new ParseException('Object support when parsing a YAML file has been disabled.');
|
|
}
|
|
|
|
return;
|
|
case 0 === strpos($scalar, '!!php/object:'):
|
|
if (self::$objectSupport) {
|
|
return unserialize(substr($scalar, 13));
|
|
}
|
|
|
|
if (self::$exceptionOnInvalidType) {
|
|
throw new ParseException('Object support when parsing a YAML file has been disabled.');
|
|
}
|
|
|
|
return;
|
|
case 0 === strpos($scalar, '!!float '):
|
|
return (float) substr($scalar, 8);
|
|
case ctype_digit($scalar):
|
|
$raw = $scalar;
|
|
$cast = (int) $scalar;
|
|
|
|
return '0' == $scalar[0] ? octdec($scalar) : (((string) $raw == (string) $cast) ? $cast : $raw);
|
|
case '-' === $scalar[0] && ctype_digit(substr($scalar, 1)):
|
|
$raw = $scalar;
|
|
$cast = (int) $scalar;
|
|
|
|
return '0' == $scalar[1] ? octdec($scalar) : (((string) $raw === (string) $cast) ? $cast : $raw);
|
|
case is_numeric($scalar):
|
|
case preg_match(self::getHexRegex(), $scalar):
|
|
return '0x' === $scalar[0].$scalar[1] ? hexdec($scalar) : (float) $scalar;
|
|
case '.inf' === $scalarLower:
|
|
case '.nan' === $scalarLower:
|
|
return -log(0);
|
|
case '-.inf' === $scalarLower:
|
|
return log(0);
|
|
case preg_match('/^(-|\+)?[0-9,]+(\.[0-9]+)?$/', $scalar):
|
|
return (float) str_replace(',', '', $scalar);
|
|
case preg_match(self::getTimestampRegex(), $scalar):
|
|
$timeZone = date_default_timezone_get();
|
|
date_default_timezone_set('UTC');
|
|
$time = strtotime($scalar);
|
|
date_default_timezone_set($timeZone);
|
|
|
|
return $time;
|
|
}
|
|
default:
|
|
return (string) $scalar;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets a regex that matches a YAML date.
|
|
*
|
|
* @return string The regular expression
|
|
*
|
|
* @see http://www.yaml.org/spec/1.2/spec.html#id2761573
|
|
*/
|
|
private static function getTimestampRegex()
|
|
{
|
|
return <<<EOF
|
|
~^
|
|
(?P<year>[0-9][0-9][0-9][0-9])
|
|
-(?P<month>[0-9][0-9]?)
|
|
-(?P<day>[0-9][0-9]?)
|
|
(?:(?:[Tt]|[ \t]+)
|
|
(?P<hour>[0-9][0-9]?)
|
|
:(?P<minute>[0-9][0-9])
|
|
:(?P<second>[0-9][0-9])
|
|
(?:\.(?P<fraction>[0-9]*))?
|
|
(?:[ \t]*(?P<tz>Z|(?P<tz_sign>[-+])(?P<tz_hour>[0-9][0-9]?)
|
|
(?::(?P<tz_minute>[0-9][0-9]))?))?)?
|
|
$~x
|
|
EOF;
|
|
}
|
|
|
|
/**
|
|
* Gets a regex that matches a YAML number in hexadecimal notation.
|
|
*
|
|
* @return string
|
|
*/
|
|
private static function getHexRegex()
|
|
{
|
|
return '~^0x[0-9a-f]++$~i';
|
|
}
|
|
}
|