Initialer Commit: Kundenverwaltung (PHP/Smarty)

Bestehende Codebasis als Ausgangsstand aufgenommen.

- .gitignore: Kundendaten (uploads_*), Smarty-Compile-Cache
  (templates_c), Laufzeit-Temp und Datenbank-Dumps ausgeschlossen;
  Verzeichnisstruktur ueber .gitkeep erhalten
- .gitattributes: Zeilenenden normalisiert (LF im Repo),
  Binaerformate markiert
- db-backup.php: MySQL-Zugangsdaten kommen jetzt wie im Rest der
  Anwendung aus der externen Konfiguration statt hartkodiert aus der
  Datei; Passwort wird ueber eine temporaere Optionsdatei statt per
  Kommandozeile uebergeben, Fehler von mysqldump/gzip werden gemeldet,
  Aufraeumen aelterer Backups berechnet Jahr und Monat konsistent

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

smarty3/libs/sysplugins/smarty_internal_resource_string.php

@@ -0,0 +1,96 @@
+<?php
+/**
+ * Smarty Internal Plugin Resource String
+ *
+ * @package Smarty
+ * @subpackage TemplateResources
+ * @author Uwe Tews
+ * @author Rodney Rehm
+ */
+
+/**
+ * Smarty Internal Plugin Resource String
+ *
+ * Implements the strings as resource for Smarty template
+ *
+ * {@internal unlike eval-resources the compiled state of string-resources is saved for subsequent access}}
+ *
+ * @package Smarty
+ * @subpackage TemplateResources
+ */
+class Smarty_Internal_Resource_String extends Smarty_Resource {
+
+    /**
+     * populate Source Object with meta data from Resource
+     *
+     * @param Smarty_Template_Source   $source    source object
+     * @param Smarty_Internal_Template $_template template object
+     * @return void
+     */
+    public function populate(Smarty_Template_Source $source, Smarty_Internal_Template $_template=null)
+    {
+        $source->uid = $source->filepath = sha1($source->name);
+        $source->timestamp = 0;
+        $source->exists = true;
+    }
+
+    /**
+     * Load template's source from $resource_name into current template object
+     *
+     * @uses decode() to decode base64 and urlencoded template_resources
+     * @param Smarty_Template_Source $source source object
+     * @return string template source
+     */
+    public function getContent(Smarty_Template_Source $source)
+    {
+        return $this->decode($source->name);
+    }
+    
+    /**
+     * decode base64 and urlencode
+     *
+     * @param string $string template_resource to decode
+     * @return string decoded template_resource
+     */
+    protected function decode($string)
+    {
+        // decode if specified
+        if (($pos = strpos($string, ':')) !== false) {
+            if (!strncmp($string, 'base64', 6)) {
+                return base64_decode(substr($string, 7));
+            } elseif (!strncmp($string, 'urlencode', 9)) {
+                return urldecode(substr($string, 10));
+            }
+        }
+        
+        return $string;
+    }
+    
+    /**
+     * modify resource_name according to resource handlers specifications
+     *
+     * @param Smarty $smarty        Smarty instance
+     * @param string $resource_name resource_name to make unique
+     * @return string unique resource name
+     */
+    protected function buildUniqueResourceName(Smarty $smarty, $resource_name)
+    {
+        return get_class($this) . '#' .$this->decode($resource_name);
+    }
+
+    /**
+     * Determine basename for compiled filename
+     *
+     * Always returns an empty string.
+     *
+     * @param Smarty_Template_Source $source source object
+     * @return string resource's basename
+     */
+    protected function getBasename(Smarty_Template_Source $source)
+    {
+        return '';
+    }
+
+}
+
+?>