@ -269,33 +269,49 @@ class VersionParser
return array(new EmptyConstraint);
}
// match tilde constraints
// like wildcard constraints, unsuffixed tilde constraints say that they must be greater than the previous
// version, to ensure that unstable instances of the current version are allowed.
// however, if a stability suffix is added to the constraint, then a >= match on the current version is
// used instead
if (preg_match('{^~(\d+)(?:\.(\d+))?(?:\.(\d+))?(?:\.(\d+))?'.self::$modifierRegex.'?$}i', $constraint, $matches)) {
if (isset($matches[4]) & & '' !== $matches[4]) {
$highVersion = $matches[1] . '.' . $matches[2] . '.' . ($matches[3] + 1) . '.0-dev';
$lowVersion = $matches[1] . '.' . $matches[2] . '.' . $matches[3]. '.' . $matches[4];
} elseif (isset($matches[3]) & & '' !== $matches[3]) {
$highVersion = $matches[1] . '.' . ($matches[2] + 1) . '.0.0-dev';
$lowVersion = $matches[1] . '.' . $matches[2] . '.' . $matches[3]. '.0';
} else {
$highVersion = ($matches[1] + 1) . '.0.0.0-dev';
if (isset($matches[2]) & & '' !== $matches[2]) {
$lowVersion = $matches[1] . '.' . $matches[2] . '.0.0';
} else {
$lowVersion = $matches[1] . '.0.0.0';
}
}
// Work out which position in the version we are operating at
if (isset($matches[4]) & & '' !== $matches[4]) $position = 4;
else if (isset($matches[3]) & & '' !== $matches[3]) $position = 3;
else if (isset($matches[2]) & & '' !== $matches[2]) $position = 2;
else $position = 1;
// Calculate the stability suffix
$stabilitySuffix = '';
if (!empty($matches[5])) {
$lowVersion .= '-' . $this->expandStability($matches[5]) . (!empty($matches[6]) ? $matches[6] : '');
$stabilitySuffix .= '-' . $this->expandStability($matches[5]) . (!empty($matches[6]) ? $matches[6] : '');
}
if (!empty($matches[7])) {
$lowVersion .= '-dev';
$stabilitySuffix .= '-dev';
}
// If we don't have a stability suffix, the lower bound is "> the previous version"
if ($stabilitySuffix == '') {
$lowVersion = $this->manipulateVersionString($matches, $position,-1,'9999999');
$lowerBound = new VersionConstraint('>', $lowVersion);
// If we have a stability suffix, then our comparison is ">= this version"
} else {
$lowVersion = $this->manipulateVersionString($matches,$position,0);
$lowerBound = new VersionConstraint('>=', $lowVersion . $stabilitySuffix);
}
// For upper bound, we increment the position of one more significance,
// but highPosition = 0 would be illegal
$highPosition = max(1,$position-1);
$highVersion = $this->manipulateVersionString($matches,$highPosition,1).'-dev';
$upperBound = new VersionConstraint('< ', $highVersion);
return array(
new VersionConstraint('>=', $lowVersion),
new VersionConstraint('< ', $highVersion),
$lowerBound ,
$upperBound
);
}
@ -355,6 +371,34 @@ class VersionParser
throw new \UnexpectedValueException($message);
}
/**
* Increment, decrement, or simply pad a version number.
*
* Support function for {@link parseConstraint()}
*
* @param array $matches Array with version parts in array indexes 1,2,3,4
* @param int $position 1,2,3,4 - which segment of the version to decrement
* @param string $pad The string to pad version parts after $position
* @return string The new version
*/
private function manipulateVersionString($matches, $position, $increment = 0, $pad = '0') {
for($i = 4; $i>0; $i--) {
if($i > $position) {
$matches[$i] = $pad;
} else if(($i == $position) & & $increment) {
$matches[$i] += $increment;
// If $matches[$i] was 0, carry the decrement
if($matches[$i] < 0 ) {
$matches[$i] = $pad;
$position--;
}
}
}
return $matches[1] . '.' . $matches[2] . '.' . $matches[3] . '.' . $matches[4];
}
private function expandStability($stability)
{
$stability = strtolower($stability);
Sam Minnee
11 years ago