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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: */
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