TagBuilder: add method HasType()

2 files changed, 17 insertions, 0 deletions

diff --git a/src/tag/TagBuilder.cxx b/src/tag/TagBuilder.cxx
index 25e5cc24b..02749cfd5 100644
--- a/src/tag/TagBuilder.cxx
+++ b/src/tag/TagBuilder.cxx
@@ -74,6 +74,16 @@ TagBuilder::Commit()
 	return tag;
 }
 
+bool
+TagBuilder::HasType(TagType type) const
+{
+	for (auto i : items)
+		if (i->type == type)
+			return true;
+
+	return false;
+}
+
 inline void
 TagBuilder::AddItemInternal(TagType type, const char *value, size_t length)
 {
diff --git a/src/tag/TagBuilder.hxx b/src/tag/TagBuilder.hxx
index ffc60a1b2..ff6251014 100644
--- a/src/tag/TagBuilder.hxx
+++ b/src/tag/TagBuilder.hxx
@@ -109,6 +109,13 @@ public:
 	}
 
 	/**
+	 * Checks whether the tag contains one or more items with
+	 * the specified type.
+	 */
+	gcc_pure
+	bool HasType(TagType type) const;
+
+	/**
 	 * Appends a new tag item.
 	 *
 	 * @param type the type of the new tag item