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diff --git a/0.8.0/paludis/qa/digest_collisions_check.cc b/0.8.0/paludis/qa/digest_collisions_check.cc
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+++ b/0.8.0/paludis/qa/digest_collisions_check.cc
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+/* vim: set sw=4 sts=4 et foldmethod=syntax : */
+
+/*
+ * Copyright (c) 2006 Ciaran McCreesh <ciaranm@ciaranm.org>
+ *
+ * This file is part of the Paludis package manager. Paludis is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU General
+ * Public License version 2, as published by the Free Software Foundation.
+ *
+ * Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <fstream>
+#include <map>
+#include <paludis/hashed_containers.hh>
+#include <paludis/qa/digest_collisions_check.hh>
+#include <paludis/util/dir_iterator.hh>
+#include <paludis/util/is_file_with_extension.hh>
+#include <paludis/util/tokeniser.hh>
+
+using namespace paludis;
+using namespace paludis::qa;
+
+namespace
+{
+ static MakeHashedMap<std::string, std::pair<std::string, FSEntry> >::Type digests;
+}
+
+DigestCollisionsCheck::DigestCollisionsCheck()
+{
+}
+
+CheckResult
+DigestCollisionsCheck::operator() (const FSEntry & d) const
+{
+ CheckResult result(d, identifier());
+
+ for (DirIterator i(d / "files") ; i != DirIterator() ; ++i)
+ {
+ if (! IsFileWithExtension("digest-", "")(*i))
+ continue;
+
+ std::fstream f(stringify(*i).c_str());
+ std::string line;
+ Tokeniser<delim_kind::AnyOfTag, delim_mode::DelimiterTag> tokeniser(" \t\n");
+ while (std::getline(f, line))
+ {
+ std::vector<std::string> entries;
+ tokeniser.tokenise(line, std::back_inserter(entries));
+
+ if (entries.size() != 4)
+ continue;
+
+ if ("MD5" != entries.at(0))
+ continue;
+
+ MakeHashedMap<std::string, std::pair<std::string, FSEntry> >::Type::iterator existing(
+ digests.find(entries.at(2)));
+ if (digests.end() != existing)
+ {
+ if (entries.at(1) != existing->second.first)
+ result << Message(qal_major, "Digest conflict on '" + entries.at(2) +
+ "' in '" + stringify(*i) +
+ "' (original was '" + stringify(existing->second.second) + "')");
+ }
+ else
+ digests.insert(std::make_pair(entries.at(2), std::make_pair(entries.at(1), *i)));
+ }
+ }
+
+ return result;
+}
+
+const std::string &
+DigestCollisionsCheck::identifier()
+{
+ static const std::string id("digest_collisions");
+ return id;
+}
+
+