[jan] Add Components_Component#getPreviousVersion().

horde · Apr 5, 2016 · 0714fba · 0714fba
1 parent 3f8e4bd
commit 0714fba
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diff --git a/components/lib/Components/Component.php b/components/lib/Components/Component.php
@@ -55,6 +55,13 @@ public function getDescription();
      */
     public function getVersion();
 
+    /**
+     * Returns the previous version of the component.
+     *
+     * @return string The previous component version.
+     */
+    public function getPreviousVersion();
+
     /**
      * Return the last release date of the component.
      *

diff --git a/components/lib/Components/Component/Base.php b/components/lib/Components/Component/Base.php
@@ -98,6 +98,38 @@ public function getVersion()
         return $this->getPackageXml()->getVersion();
     }
 
+    /**
+     * Returns the previous version of the component.
+     *
+     * @return string The previous component version.
+     */
+    public function getPreviousVersion()
+    {
+        $previousVersion = null;
+        $currentVersion = $this->getVersion();
+        $currentState = $this->getState();
+        $versions = $this->getPackageXml()->getVersions();
+        usort(
+            $versions,
+            function($a, $b) {
+                return version_compare($a['version'], $b['version']);
+            }
+        );
+        foreach ($versions as $version) {
+            // If this is a stable version we want the previous stable version,
+            // otherwise use any previous version.
+            if ($currentState == 'stable' &&
+                $version['stability'] != 'stable') {
+                continue;
+            }
+            if (version_compare($version['version'], $currentVersion, '>=')) {
+                return $previousVersion;
+            }
+            $previousVersion = $version['version'];
+        }
+        return $previousVersion;
+    }
+
     /**
      * Return the last release date of the component.
      *

diff --git a/components/lib/Components/Component/Remote.php b/components/lib/Components/Component/Remote.php
@@ -138,6 +138,34 @@ public function getVersion()
         return $this->_version;
     }
 
+    /**
+     * Returns the previous version of the component.
+     *
+     * @return string The previous component version.
+     */
+    public function getPreviousVersion()
+    {
+        $previousVersion = null;
+        $currentVersion = $this->getVersion();
+        $currentState = $this->getState();
+        $releases = $this->_remote->getReleases();
+        $versions = $releases->listReleases();
+        usort($versions, 'version_compare');
+        foreach ($versions as $version) {
+            // If this is a stable version we want the previous stable version,
+            // otherwise use any previous version.
+            if ($currentState == 'stable' &&
+                $releases->getReleaseStability($version) != 'stable') {
+                continue;
+            }
+            if (version_compare($version, $currentVersion, '>=')) {
+                return $previousVersion;
+            }
+            $previousVersion = $version;
+        }
+        return $previousVersion;
+    }
+
     /**
      * Return the channel of the component.
      *

diff --git a/components/package.xml b/components/package.xml
@@ -21,6 +21,7 @@
  </stability>
  <license uri="http://www.horde.org/licenses/lgpl21">LGPL-2.1</license>
  <notes>
+* [jan] Add Components_Component_Base#getPreviousVersion().
 * [jan] Bundle QC tools.
 * [jan] Remove Freecode support.
 * [jan] Update website versions after releasing a package.
@@ -4581,6 +4582,7 @@
    <date>2016-01-13</date>
    <license uri="http://www.horde.org/licenses/lgpl21">LGPL-2.1</license>
    <notes>
+* [jan] Add Components_Component_Base#getPreviousVersion().
 * [jan] Bundle QC tools.
 * [jan] Remove Freecode support.
 * [jan] Update website versions after releasing a package.