Add alternative header iterator method

- we dont always want the actual contents of the tag to be copied
  on iteration, so add an interface that returns the next tag in the
  header
- this lets callers to decide what to do with the tag and how to
  retrieve it

1 files changed, 8 insertions, 1 deletions

diff --git a/lib/header.h b/lib/header.h
index e39b7a73c..dff0b48e9 100644
--- a/lib/header.h
+++ b/lib/header.h
@@ -309,7 +309,7 @@ HeaderIterator headerFreeIterator(HeaderIterator hi);
 HeaderIterator headerInitIterator(Header h);
 
 /** \ingroup header
- * Return next tag from header.
+ * Return next tag contents from header.
  * @param hi		header tag iterator
  * @retval td		tag data container
  * @return		1 on success, 0 on failure
@@ -317,6 +317,13 @@ HeaderIterator headerInitIterator(Header h);
 int headerNext(HeaderIterator hi, rpmtd td);
 
 /** \ingroup header
+ * Return next tag number from header.
+ * @param hi		header tag iterator
+ * @return		next tag, RPMTAG_NOT_FOUND to stop iteration
+ */
+rpmTag headerNextTag(HeaderIterator hi);
+
+/** \ingroup header
  * Return name, version, release strings from header.
  * @param h		header
  * @retval *np		name pointer (or NULL)