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79 lines
2.2 KiB
PHTML
79 lines
2.2 KiB
PHTML
5 years ago
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<?php
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/*
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* This file is part of Composer.
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*
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* (c) Nils Adermann <naderman@naderman.de>
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* Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Composer\Util;
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class MetadataMinifier
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{
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public static function expand(array $versions)
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{
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$expanded = array();
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$expandedVersion = null;
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foreach ($versions as $versionData) {
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if (!$expandedVersion) {
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$expandedVersion = $versionData;
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$expanded[] = $expandedVersion;
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continue;
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}
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// add any changes from the previous version to the expanded one
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foreach ($versionData as $key => $val) {
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if ($val === '__unset') {
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unset($expandedVersion[$key]);
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} else {
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$expandedVersion[$key] = $val;
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}
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}
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$expanded[] = $expandedVersion;
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}
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return $expanded;
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}
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public static function minify(array $versions)
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{
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$minifiedVersions = array();
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$lastKnownVersionData = null;
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foreach ($versions as $version) {
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if (!$lastKnownVersionData) {
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$lastKnownVersionData = $version;
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$minifiedVersions[] = $version;
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continue;
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}
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$minifiedVersion = [];
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// add any changes from the previous version
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foreach ($version as $key => $val) {
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if (!isset($lastKnownVersionData[$key]) || $lastKnownVersionData[$key] !== $val) {
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$minifiedVersion[$key] = $val;
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$lastKnownVersionData[$key] = $val;
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}
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}
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// store any deletions from the previous version for keys missing in current one
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foreach ($lastKnownVersionData as $key => $val) {
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if (!isset($version[$key])) {
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$minifiedVersion[$key] = "__unset";
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unset($lastKnownVersionData[$key]);
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}
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}
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$minifiedVersions[] = $minifiedVersion;
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}
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return $minifiedVersions;
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}
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}
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