1 files changed, 49 insertions, 0 deletions
diff --git a/rpm-find-leaves.c b/rpm-find-leaves.c
new file mode 100644
index 0000000..c72337a
--- /dev/null
+++ b/rpm-find-leaves.c
@@ -0,0 +1,49 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <rpm/rpmlib.h>
+#include <rpm/header.h>
+
+static Header header;
+
+#define die(f) { perror(f); exit(1); }
+
+rpmdb open_rpmdb(void) {
+  rpmdb db;
+  if (rpmdbOpen("", &db, O_RDONLY, 0644)) die("rpmdbOpen");
+  return db;
+}
+
+char *get(int_32 tag) {
+  int_32 type, count;
+  char *s;
+  if (headerGetEntry(header, tag, &type, (void **) &s, &count) != 1) die("bad header ??");
+  return s;
+}
+
+
+int main() {
+  rpmTransactionSet trans;
+  struct rpmDependencyConflict *conflicts;
+  int numConflicts;
+  rpmdb db;
+  int i;
+
+  rpmReadConfigFiles(NULL, NULL);
+
+  db = open_rpmdb();
+
+  for(i = rpmdbFirstRecNum(db); i; i = rpmdbNextRecNum(db, i)) {
+    trans = rpmtransCreateSet(db, NULL);
+    rpmtransRemovePackage(trans, i);
+    if (rpmdepCheck(trans, &conflicts, &numConflicts)) die("rpmdepCheck");
+    if (numConflicts == 0) {
+      header = rpmdbGetRecord(db, i);
+      printf("%s-%s-%s\n", get(RPMTAG_NAME), get(RPMTAG_VERSION), get(RPMTAG_RELEASE));
+      headerFree(header);
+    }
+    rpmdepFreeConflicts(conflicts, numConflicts);
+    rpmtransFree(trans);
+  }
+  exit(0);
+}