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-rw-r--r--qobject/qdict.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/qobject/qdict.c b/qobject/qdict.c
index 42ec4c0..ea239f0 100644
--- a/qobject/qdict.c
+++ b/qobject/qdict.c
@@ -665,3 +665,35 @@ void qdict_array_split(QDict *src, QList **dst)
qlist_append_obj(*dst, subqobj ?: QOBJECT(subqdict));
}
}
+
+/**
+ * qdict_join(): Absorb the src QDict into the dest QDict, that is, move all
+ * elements from src to dest.
+ *
+ * If an element from src has a key already present in dest, it will not be
+ * moved unless overwrite is true.
+ *
+ * If overwrite is true, the conflicting values in dest will be discarded and
+ * replaced by the corresponding values from src.
+ *
+ * Therefore, with overwrite being true, the src QDict will always be empty when
+ * this function returns. If overwrite is false, the src QDict will be empty
+ * iff there were no conflicts.
+ */
+void qdict_join(QDict *dest, QDict *src, bool overwrite)
+{
+ const QDictEntry *entry, *next;
+
+ entry = qdict_first(src);
+ while (entry) {
+ next = qdict_next(src, entry);
+
+ if (overwrite || !qdict_haskey(dest, entry->key)) {
+ qobject_incref(entry->value);
+ qdict_put_obj(dest, entry->key, entry->value);
+ qdict_del(src, entry->key);
+ }
+
+ entry = next;
+ }
+}