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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <cassert>
+#include <set>
+
+#include <com/sun/star/uno/RuntimeException.hpp>
+#include <rtl/ustring.hxx>
+#include <sal/types.h>
+
+#include "data.hxx"
+#include "partial.hxx"
+
+namespace configmgr {
+
+namespace {
+
+bool parseSegment(
+ OUString const & path, sal_Int32 * index, OUString * segment)
+{
+ assert(
+ index != nullptr && *index >= 0 && *index <= path.getLength() &&
+ segment != nullptr);
+ if (path[(*index)++] == '/') {
+ OUString name;
+ bool setElement;
+ OUString templateName;
+ *index = Data::parseSegment(
+ path, *index, &name, &setElement, &templateName);
+ if (*index != -1) {
+ *segment = Data::createSegment(templateName, name);
+ return *index == path.getLength();
+ }
+ }
+ throw css::uno::RuntimeException("bad path " + path);
+}
+
+}
+
+Partial::Partial(
+ std::set< OUString > const & includedPaths,
+ std::set< OUString > const & excludedPaths)
+{
+ // The Partial::Node tree built up here encodes the following information:
+ // * Inner node, startInclude: an include starts here that contains excluded
+ // sub-trees
+ // * Inner node, !startInclude: contains in-/excluded sub-trees
+ // * Leaf node, startInclude: an include starts here
+ // * Leaf node, !startInclude: an exclude starts here
+ for (auto const& includedPath : includedPaths)
+ {
+ sal_Int32 n = 0;
+ for (Node * p = &root_;;) {
+ OUString seg;
+ bool end = parseSegment(includedPath, &n, &seg);
+ p = &p->children[seg];
+ if (p->startInclude) {
+ break;
+ }
+ if (end) {
+ p->children.clear();
+ p->startInclude = true;
+ break;
+ }
+ }
+ }
+ for (auto const& excludedPath : excludedPaths)
+ {
+ sal_Int32 n = 0;
+ for (Node * p = &root_;;) {
+ OUString seg;
+ bool end = parseSegment(excludedPath, &n, &seg);
+ if (end) {
+ p->children[seg].clear();
+ break;
+ }
+ Node::Children::iterator j(p->children.find(seg));
+ if (j == p->children.end()) {
+ break;
+ }
+ p = &j->second;
+ }
+ }
+}
+
+Partial::~Partial() {}
+
+Partial::Containment Partial::contains(std::vector<OUString> const & path) const {
+ //TODO: For set elements, the segment names recorded in the node tree need
+ // not match the corresponding path segments, so this function can fail.
+
+ // * If path ends at a leaf node or goes past a leaf node:
+ // ** If that leaf node is startInclude: => CONTAINS_NODE
+ // ** If that leaf node is !startInclude: => CONTAINS_NOT
+ // * If path ends at inner node:
+ // ** If there is some startInclude along its trace: => CONTAINS_NODE
+ // ** If there is no startInclude along its trace: => CONTAINS_SUBNODES
+ Node const * p = &root_;
+ bool bIncludes = false;
+ for (auto const& elemPath : path)
+ {
+ Node::Children::const_iterator j(p->children.find(elemPath));
+ if (j == p->children.end()) {
+ return p->startInclude ? CONTAINS_NODE : CONTAINS_NOT;
+ }
+ p = &j->second;
+ bIncludes |= p->startInclude;
+ }
+ return p->children.empty() && !p->startInclude
+ ? CONTAINS_NOT
+ : bIncludes ? CONTAINS_NODE : CONTAINS_SUBNODES;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */