Create utility method for moving entries from one group to another

This will become especially useful when moving state data from the config file
to a dedicated state data file.

Task: https://phabricator.kde.org/T12549

1 files changed, 26 insertions, 0 deletions

diff --git a/src/core/kconfiggroup.cpp b/src/core/kconfiggroup.cpp
index a15c45eb..be1f2b0e 100644
--- a/src/core/kconfiggroup.cpp
+++ b/src/core/kconfiggroup.cpp
@@ -1257,3 +1257,29 @@ void KConfigGroup::reparent(KConfigBase *parent, WriteConfigFlags pFlags)
     oldGroup.copyTo(this, pFlags);
     oldGroup.deleteGroup(); // so that the entries with the old group name are deleted on sync
 }
+
+void KConfigGroup::moveValuesTo(const QList<const char *> &keys, KConfigGroup &other, WriteConfigFlags pFlags)
+{
+    Q_ASSERT(isValid());
+    Q_ASSERT(other.isValid());
+
+    for (const auto key : keys) {
+        const QByteArray groupName = name().toLocal8Bit();
+        const auto entry = config()->d_ptr->lookupInternalEntry(groupName, key, KEntryMap::SearchLocalized);
+
+        // Only write the entry if it is not null, if it is a global enry there is no point in moving it
+        if (!entry.mValue.isNull() && !entry.bGlobal) {
+            deleteEntry(key, pFlags);
+            KEntryMap::EntryOptions options = KEntryMap::EntryOption::EntryDirty;
+            if (entry.bDeleted) {
+                options |= KEntryMap::EntryDeleted;
+            }
+
+            if (entry.bExpand) {
+                options |= KEntryMap::EntryExpansion;
+            }
+
+            other.config()->d_ptr->setEntryData(other.name().toLocal8Bit(), key, entry.mValue, options);
+        }
+    }
+}