Add rpmalLookupTE helper

It returns the index of a transaction element in the available
packages list, or (unsigned int)-1 if not fould.

(cherry picked from commit 87b8b19eba9207d6c4d30793bec5a2b8044ecadb)

2 files changed, 20 insertions, 0 deletions

diff --git a/lib/rpmal.c b/lib/rpmal.c
index 8f61c8e64..ca7ab053e 100644
--- a/lib/rpmal.c
+++ b/lib/rpmal.c
@@ -564,3 +564,14 @@ rpmalSatisfiesDepend(const rpmal al, const rpmte te, const rpmds ds)
     }
     return best;
 }
+
+unsigned int
+rpmalLookupTE(const rpmal al, const rpmte te)
+{
+    rpmalNum pkgNum;
+    for (pkgNum=0; pkgNum < al->size; pkgNum++)
+	if (al->list[pkgNum].p == te)
+	    break;
+    return pkgNum < al->size ? pkgNum : (unsigned int)-1;
+}
+
diff --git a/lib/rpmal.h b/lib/rpmal.h
index 3c6a833d3..10fe756d4 100644
--- a/lib/rpmal.h
+++ b/lib/rpmal.h
@@ -80,6 +80,15 @@ rpmte * rpmalAllSatisfiesDepend(const rpmal al, const rpmds ds);
 RPM_GNUC_INTERNAL
 rpmte rpmalSatisfiesDepend(const rpmal al, const rpmte te, const rpmds ds);
 
+/**
+ * Return index of a transaction element  in the available list
+ * @param al           available list
+ * @param te           transaction element
+ * @return             index, (unsigned int)-1 if not found
+ */
+RPM_GNUC_INTERNAL
+unsigned int rpmalLookupTE(const rpmal al, const rpmte te);
+
 #ifdef __cplusplus
 }
 #endif