+ unsigned int i;
+ struct archive* archive;
+ struct archive_entry* entry;
+
+ map<string, mode_t> hardlink_target_modes;
+
+ // We first do a run over the archive and remember the modes
+ // of regular files.
+ // In the second run, we print the footprint - using the stored
+ // modes for hardlinks.
+ //
+ // FIXME the code duplication here is butt ugly
+ archive = archive_read_new();
+ INIT_ARCHIVE(archive);
+
+ if (archive_read_open_filename(archive,
+ filename.c_str(),
+ DEFAULT_BYTES_PER_BLOCK) != ARCHIVE_OK)
+ throw runtime_error_with_errno("could not open " + filename, archive_errno(archive));
+
+ for (i = 0; archive_read_next_header(archive, &entry) ==
+ ARCHIVE_OK; ++i) {
+
+ mode_t mode = archive_entry_mode(entry);
+
+ if (!archive_entry_hardlink(entry)) {
+ const char *s = archive_entry_pathname(entry);
+
+ hardlink_target_modes[s] = mode;
+ }