Allow access to single variables from deviceinfo

libssu/ssudeviceinfo.cpp

@@ -337,6 +337,26 @@ QStringList SsuDeviceInfo::repos(bool rnd, int filter){
   return result;
 }
 
+QVariant SsuDeviceInfo::variable(QString section, const QString &key){
+  if (!section.startsWith("var-"))
+    section = "var-" + section;
+
+  if (boardMappings->contains(section + "/" + key)){
+    return boardMappings->value(section + "/" + key);
+  }
+
+  if (boardMappings->contains(section + "/variables")){
+    QStringList sections = boardMappings->value(section + "/variables").toStringList();
+    foreach(const QString &section, sections){
+      QVariant value = variable(section, key);
+      if (value.type() != QMetaType::UnknownType)
+        return value;
+    }
+  }
+
+  return QVariant();
+}
+
 void SsuDeviceInfo::variableSection(QString section, QHash<QString, QString> *storageHash){
   if (!section.startsWith("var-"))
     section = "var-" + section;

libssu/ssudeviceinfo.h

@@ -71,12 +71,18 @@ class SsuDeviceInfo: public QObject {
      * Override device model autodetection
      */
     Q_INVOKABLE void setDeviceModel(QString model="");
+    /**
+     * Return a variable from the given variable section. 'var'- is automatically
+     * prepended to the section name if not specified already. Recursive search
+     * through several variable sections (specified in the section) is supported,
+     * returned will be the first occurence of the variable.
+     */
+    QVariant variable(QString section, const QString &key);
     /**
      * Return the requested variable section. 'var-' is automatically
      * prepended to the section name if not specified already.
      */
     void variableSection(QString section, QHash<QString, QString> *storageHash);
-
     /**
      * Return a value from an adaptation section. Returns an empty string
      * or a given default value if key does not exist.