1 files changed, 53 insertions, 0 deletions
diff --git a/hdlist2prereq.cc b/hdlist2prereq.cc
new file mode 100644
index 0000000..68434f0
--- /dev/null
+++ b/hdlist2prereq.cc
@@ -0,0 +1,53 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <rpm/rpmlib.h>
+#include <rpm/header.h>
+#include <iostream>
+
+
+char *get_name(Header header, int_32 tag) {
+  int_32 type, count;
+  char *name;
+
+  headerGetEntry(header, tag, &type, (void **) &name, &count);
+  return name;
+}
+
+int get_int(Header header, int_32 tag) {
+  int_32 type, count;
+  int *i;
+
+  headerGetEntry(header, tag, &type, (void **) &i, &count);
+  return *i;
+}
+
+int main(int argc, char **argv) 
+{
+  if (argc <= 1) {
+    cerr << "usage: hdlist2prereq <hdlist> [<hdlists...>]\n";
+    exit(1);
+  }
+  for (int i = 1; i < argc; i++) {
+    FD_t fd = strcmp(argv[i], "-") == 0 ? fdDup(STDIN_FILENO) : fdOpen(argv[i], O_RDONLY, 0);
+    if (fdFileno(fd) < 0) cerr << "rpmpackdeps: cannot open file " << argv[i] << "\n";
+    else  {
+      Header header;
+      int_32 type, count;
+      char **list;
+      int *flags;
+
+      while ((header=headerRead(fd, HEADER_MAGIC_YES))) {
+	char *name = get_name(header, RPMTAG_NAME);
+
+	headerGetEntry(header, RPMTAG_REQUIRENAME, &type, (void **) &list, &count);
+	headerGetEntry(header, RPMTAG_REQUIREFLAGS, &type, (void **) &flags, &count);
+
+	if (flags && list)
+	  for(i = 0; i < count; i++)
+	    if (flags[i] & RPMSENSE_PREREQ) printf("%s:%s\n", name, list[i]);
+      }
+    }
+    fdClose(fd);
+  }
+}