1 files changed, 165 insertions, 0 deletions
diff --git a/platform/www/inc/Draft.php b/platform/www/inc/Draft.php
new file mode 100644
index 0000000..f80016c
--- /dev/null
+++ b/platform/www/inc/Draft.php
@@ -0,0 +1,165 @@
+<?php
+
+namespace dokuwiki;
+
+/**
+ * Class Draft
+ *
+ * @package dokuwiki
+ */
+class Draft
+{
+
+    protected $errors = [];
+    protected $cname;
+    protected $id;
+    protected $client;
+
+    /**
+     * Draft constructor.
+     *
+     * @param string $ID the page id for this draft
+     * @param string $client the client identification (username or ip or similar) for this draft
+     */
+    public function __construct($ID, $client)
+    {
+        $this->id = $ID;
+        $this->client = $client;
+        $this->cname = getCacheName($client.$ID, '.draft');
+        if(file_exists($this->cname) && file_exists(wikiFN($ID))) {
+            if (filemtime($this->cname) < filemtime(wikiFN($ID))) {
+                // remove stale draft
+                $this->deleteDraft();
+            }
+        }
+    }
+
+    /**
+     * Get the filename for this draft (whether or not it exists)
+     *
+     * @return string
+     */
+    public function getDraftFilename()
+    {
+        return $this->cname;
+    }
+
+    /**
+     * Checks if this draft exists on the filesystem
+     *
+     * @return bool
+     */
+    public function isDraftAvailable()
+    {
+        return file_exists($this->cname);
+    }
+
+    /**
+     * Save a draft of a current edit session
+     *
+     * The draft will not be saved if
+     *   - drafts are deactivated in the config
+     *   - or the editarea is empty and there are no event handlers registered
+     *   - or the event is prevented
+     *
+     * @triggers DRAFT_SAVE
+     *
+     * @return bool whether has the draft been saved
+     */
+    public function saveDraft()
+    {
+        global $INPUT, $INFO, $EVENT_HANDLER, $conf;
+        if (!$conf['usedraft']) {
+            return false;
+        }
+        if (!$INPUT->post->has('wikitext') &&
+            !$EVENT_HANDLER->hasHandlerForEvent('DRAFT_SAVE')) {
+            return false;
+        }
+        $draft = [
+            'id' => $this->id,
+            'prefix' => substr($INPUT->post->str('prefix'), 0, -1),
+            'text' => $INPUT->post->str('wikitext'),
+            'suffix' => $INPUT->post->str('suffix'),
+            'date' => $INPUT->post->int('date'),
+            'client' => $this->client,
+            'cname' => $this->cname,
+            'errors' => [],
+        ];
+        $event = new Extension\Event('DRAFT_SAVE', $draft);
+        if ($event->advise_before()) {
+            $draft['hasBeenSaved'] = io_saveFile($draft['cname'], serialize($draft));
+            if ($draft['hasBeenSaved']) {
+                $INFO['draft'] = $draft['cname'];
+            }
+        } else {
+            $draft['hasBeenSaved'] = false;
+        }
+        $event->advise_after();
+
+        $this->errors = $draft['errors'];
+
+        return $draft['hasBeenSaved'];
+    }
+
+    /**
+     * Get the text from the draft file
+     *
+     * @throws \RuntimeException if the draft file doesn't exist
+     *
+     * @return string
+     */
+    public function getDraftText()
+    {
+        if (!file_exists($this->cname)) {
+            throw new \RuntimeException(
+                "Draft for page $this->id and user $this->client doesn't exist at $this->cname."
+            );
+        }
+        $draft = unserialize(io_readFile($this->cname,false));
+        return cleanText(con($draft['prefix'],$draft['text'],$draft['suffix'],true));
+    }
+
+    /**
+     * Remove the draft from the filesystem
+     *
+     * Also sets $INFO['draft'] to null
+     */
+    public function deleteDraft()
+    {
+        global $INFO;
+        @unlink($this->cname);
+        $INFO['draft'] = null;
+    }
+
+    /**
+     * Get a formatted message stating when the draft was saved
+     *
+     * @return string
+     */
+    public function getDraftMessage()
+    {
+        global $lang;
+        return $lang['draftdate'] . ' ' . dformat(filemtime($this->cname));
+    }
+
+    /**
+     * Retrieve the errors that occured when saving the draft
+     *
+     * @return array
+     */
+    public function getErrors()
+    {
+        return $this->errors;
+    }
+
+    /**
+     * Get the timestamp when this draft was saved
+     *
+     * @return int
+     */
+    public function getDraftDate()
+    {
+        return filemtime($this->cname);
+    }
+}