8000 [Form] Fixed DateTimeToStringTransformer parsing on PHP < 5.3.8 by webmozart · Pull Request #6353 · symfony/symfony · GitHub
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[Form] Fixed DateTimeToStringTransformer parsing on PHP < 5.3.8 #6353

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Merged
merged 1 commit into from
Dec 14, 2012
Merged

[Form] Fixed DateTimeToStringTransformer parsing on PHP < 5.3.8 #6353

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89 changes: 84 additions & 5 deletions src/Symfony/Component/Form/Extension/Core/DataTransformer/DateTimeToStringTransformer.php
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Original file line number Diff line number Diff line change
Expand Up @@ -39,23 +39,38 @@ class DateTimeToStringTransformer extends BaseDateTimeTransformer
*/
private $parseFormat;

/**
* Whether to parse by appending a pipe "|" to the parse format.
*
* This only works as of PHP 5.3.8.
*
* @var Boolean
*/
private $parseUsingPipe;

/**
* Transforms a \DateTime instance to a string
*
* @see \DateTime::format() for supported formats
*
* @param string $inputTimezone The name of the input timezone
* @param string $outputTimezone The name of the output timezone
* @param string $format The date format
* @param string $inputTimezone The name of the input timezone
* @param string $outputTimezone The name of the output timezone
* @param string $format The date format
* @param Boolean $parseUsingPipe Whether to parse by appending a pipe "|" to the parse format
*
* @throws UnexpectedTypeException if a timezone is not a string
*/
public function __construct($inputTimezone = null, $outputTimezone = null, $format = 'Y-m-d H:i:s')
public function __construct($inputTimezone = null, $outputTimezone = null, $format = 'Y-m-d H:i:s', $parseUsingPipe = null)
{
parent::__construct($inputTimezone, $outputTimezone);

$this->generateFormat = $this->parseFormat = $format;

// The pipe in the parser pattern only works as of PHP 5.3.8
$this->parseUsingPipe = null === $parseUsingPipe
? version_compare(phpversion(), '5.3.8', '>=')
: $parseUsingPipe;

// See http://php.net/manual/en/datetime.createfromformat.php
// The character "|" in the format makes sure that the parts of a date
// that are *not* specified in the format are reset to the corresponding
Expand All @@ -64,7 +79,7 @@ public function __construct($inputTimezone = null, $outputTimezone = null, $form
// where the time corresponds to the current server time.
// With "|" and "Y-m-d", "2010-02-03" becomes "2010-02-03 00:00:00",
// which is at least deterministic and thus used here.
if (false === strpos($this->parseFormat, '|')) {
if ($this->parseUsingPipe && false === strpos($this->parseFormat, '|')) {
$this->parseFormat .= '|';
}
}
Expand Down Expand Up @@ -125,6 +140,70 @@ public function reverseTransform($value)
$outputTz = new \DateTimeZone($this->outputTimezone);
$dateTime = \DateTime::createFromFormat($this->parseFormat, $value, $outputTz);

// On PHP versions < 5.3.8 we need to emulate the pipe operator
// and reset parts not given in the format to their equivalent
// of the UNIX base timestamp.
if (!$this->parseUsingPipe) {
list($year, $month, $day, $hour, $minute, $second) = explode('-', $dateTime->format('Y-m-d-H-i-s'));

// Check which of the date parts are present in the pattern
preg_match(
'/(' .
'(?<day>[djDl])|' .
'(?<month>[FMmn])|' .
'(?<year>[Yy])|' .
'(?<hour>[ghGH])|' .
'(?<minute>i)|' .
'(?<second>s)|' .
'(?<dayofyear>z)|' .
'(?<timestamp>U)|' .
'[^djDlFMmnYyghGHiszU]' .
')*/',
$this->parseFormat,
$matches
);

// preg_match() does not guarantee to set all indices, so
// set them unless given
$matches = array_merge(array(
'day' => false,
'month' => false,
'year' => false,
'hour' => false,
'minute' => false,
'second' => false,
'dayofyear' => false,
'timestamp' => false,
), $matches);

// Reset all parts that don't exist in the format to the
// corresponding part of the UNIX base timestamp
if (!$matches['timestamp']) {
if (!$matches['dayofyear']) {
if (!$matches['day']) {
$day = 1;
}
if (!$matches['month']) {
$month = 1;
}
}
if (!$matches['year']) {
$year = 1970;
}
if (!$matches['hour']) {
$hour = 0;
}
if (!$matches['minute']) {
$minute = 0;
}
if (!$matches['second']) {
$second = 0;
}
$dateTime->setDate($year, $month, $day);
$dateTime->setTime($hour, $minute, $second);
}
}

$lastErrors = \DateTime::getLastErrors();

if (0 < $lastErrors['warning_count'] || 0 < $lastErrors['error_count']) {
Expand Down
61 changes: 51 additions & 10 deletions ...y/Component/Form/Tests/Extension/Core/DataTransformer/DateTimeToStringTransformerTest.php
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Original file line number Diff line number Diff line change
Expand Up @@ -18,18 +18,43 @@ class DateTimeToStringTransformerTest extends DateTimeTestCase
public function dataProvider()
{
return array(
array('Y-m-d H:i:s', '2010-02-03 04:05:06', '2010-02-03 04:05:06 UTC'),
array('Y-m-d H:i:00', '2010-02-03 04:05:00', '2010-02-03 04:05:00 UTC'),
array('Y-m-d H:i', '2010-02-03 04:05', '2010-02-03 04:05:00 UTC'),
array('Y-m-d H', '2010-02-03 04', '2010-02-03 04:00:00 UTC'),
array('Y-m-d H:i:s', '2010-02-03 16:05:06', '2010-02-03 16:05:06 UTC'),
array('Y-m-d H:i:00', '2010-02-03 16:05:00', '2010-02-03 16:05:00 UTC'),
array('Y-m-d H:i', '2010-02-03 16:05', '2010-02-03 16:05:00 UTC'),
array('Y-m-d H', '2010-02-03 16', '2010-02-03 16:00:00 UTC'),
array('Y-m-d', '2010-02-03', '2010-02-03 00:00:00 UTC'),
array('Y-m', '2010-02', '2010-02-01 00:00:00 UTC'),
array('Y', '2010', '2010-01-01 00:00:00 UTC'),
array('d-m-Y', '03-02-2010', '2010-02-03 00:00:00 UTC'),
array('H:i:s', '04:05:06', '1970-01-01 04:05:06 UTC'),
array('H:i:00', '04:05:00', '1970-01-01 04:05:00 UTC'),
array('H:i', '04:05', '1970-01-01 04:05:00 UTC'),
array('H', '04', '1970-01-01 04:00:00 UTC'),
array('H:i:s', '16:05:06', '1970-01-01 16:05:06 UTC'),
array('H:i:00', '16:05:00', '1970-01-01 16:05:00 UTC'),
array('H:i', '16:05', '1970-01-01 16:05:00 UTC'),
array('H', '16', '1970-01-01 16:00:00 UTC'),

// different day representations
array('Y-m-j', '2010-02-3', '2010-02-03 00:00:00 UTC'),
array('Y-z', '2010-33', '2010-02-03 00:00:00 UTC'),
array('z', '33', '1970-02-03 00:00:00 UTC'),

// not bijective
//array('Y-m-D', '2010-02-Wed', '2010-02-03 00:00:00 UTC'),
//array('Y-m-l', '2010-02-Wednesday', '2010-02-03 00:00:00 UTC'),

// different month representations
array('Y-n-d', '2010-2-03', '2010-02-03 00:00:00 UTC'),
array('Y-M-d', '2010-Feb-03', '2010-02-03 00:00:00 UTC'),
array('Y-F-d', '2010-February-03', '2010-02-03 00:00:00 UTC'),

// different year representations
array('y-m-d', '10-02-03', '2010-02-03 00:00:00 UTC'),

// different time representations
array('G:i:s', '16:05:06', '1970-01-01 16:05:06 UTC'),
array('g:i:s a', '4:05:06 pm', '1970-01-01 16:05:06 UTC'),
array('h:i:s a', '04:05:06 pm', '1970-01-01 16:05:06 UTC'),

// seconds since unix
array('U', '1265213106', '2010-02-03 16:05:06 UTC'),
);
}

Expand Down Expand Up @@ -75,8 +100,24 @@ public function testTransformExpectsDateTime()
/**
* @dataProvider dataProvider
*/
public function testReverseTransform($format, $input, $output)
public function testReverseTransformBeforePhp538($format, $input, $output)
{
$reverseTransformer = new DateTimeToStringTransformer('UTC', 'UTC', $format, false);

$output = new \DateTime($output);

$this->assertDateTimeEquals($output, $reverseTransformer->reverseTransform($input));
}

/**
* @dataProvider dataProvider
*/
public function testReverseTransformAsOfPhp538($format, $input, $output)
{
if (version_compare(phpversion(), '5.3.8', '<')) {
$this->markTestSkipped('Requires PHP 5.3.8 or newer');
}

$reverseTransformer = new DateTimeToStringTransformer('UTC', 'UTC', $format);

$output = new \DateTime($output);
Expand All @@ -95,7 +136,7 @@ public function testReverseTransform_differentTimezones()
{
$reverseTransformer = new DateTimeToStringTransformer('America/New_York', 'Asia/Hong_Kong', 'Y-m-d H:i:s');

$output = new \DateTime('2010-02-03 04:05:06 Asia/Hong_Kong');
$output = new \DateTime('2010-02-03 16:05:06 Asia/Hong_Kong');
$input = $output->format('Y-m-d H:i:s');
$output->setTimeZone(new \DateTimeZone('America/New_York'));

Expand Down
0