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112 lines
4.2 KiB
C++
112 lines
4.2 KiB
C++
// Copyright 2010, Google Inc. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// 3. Neither the name of Google Inc. nor the names of its contributors may be
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// used to endorse or promote products derived from this software without
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// specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// This file contains the implementation of the KmlFeatureListSaver class.
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#ifndef KML_CONVENIENCE_KML_FEATURE_LIST_SAVER_H__
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#define KML_CONVENIENCE_KML_FEATURE_LIST_SAVER_H__
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#include "kml/convenience/feature_list.h"
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#include "kml/dom.h"
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#include "kml/engine/engine_types.h"
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namespace kmlconvenience {
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// This ParserObserver saves the non-Container Features in the input KML
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// to the given FeatureList and the shared style selectors to the given
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// SharedStyleMap if one is supplied. If a style_base is supplied any Feature
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// with a in-file relative reference is saved to the FeatureList with the
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// given string as the base. The SharedStyleMap and style_base are optional.
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// Example usage:
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// FeatureList feature_list;
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// SharedStyleMap shared_style_map;
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// KmlFeatureListSaver kml_saver(&feature_list, &shared_style_map, "s.kml");
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// Parser parser;
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// parser.AddObserver(&kml_saver);
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// string errors;
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// parser.Parse(kml, &errors);
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class KmlFeatureListSaver : public kmldom::ParserObserver {
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public:
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KmlFeatureListSaver(FeatureList* feature_list,
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kmlengine::SharedStyleMap* shared_style_map,
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const char* style_base)
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: feature_list_(feature_list),
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shared_style_map_(shared_style_map),
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in_update_(false) {
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if (style_base) {
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style_base_ = string(style_base);
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}
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}
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virtual bool StartElement(const kmldom::ElementPtr& element) {
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if (element->Type() == kmldom::Type_Update) {
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in_update_ = true;
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}
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return true;
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}
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virtual bool EndElement(const kmldom::ElementPtr& parent,
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const kmldom::ElementPtr& child) {
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if (child->Type() == kmldom::Type_Update) { // </Update>
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in_update_ = false;
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return false;
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}
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if (in_update_) {
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return true;
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}
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if (child->IsA(kmldom::Type_Feature) &&
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!child->IsA(kmldom::Type_Container)) {
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kmldom::FeaturePtr feature = kmldom::AsFeature(child);
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if (!style_base_.empty() && feature->has_styleurl()) {
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const string& styleurl = feature->get_styleurl();
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if (styleurl.size() > 2 && styleurl[0] == '#') {
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feature->set_styleurl(style_base_ + styleurl);
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}
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}
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feature_list_->PushBack(feature);
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return false;
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}
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if (shared_style_map_ && child->IsA(kmldom::Type_StyleSelector) &&
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parent->IsA(kmldom::Type_Document)) {
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const kmldom::StyleSelectorPtr ss = kmldom::AsStyleSelector(child);
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if (ss->has_id()) {
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(*shared_style_map_)[ss->get_id()] = ss;
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return false;
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}
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}
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return true;
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}
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private:
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FeatureList* feature_list_;
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kmlengine::SharedStyleMap* shared_style_map_;
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string style_base_;
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bool in_update_;
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};
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} // end namespace kmlconvenience
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#endif // KML_CONVENIENCE_KML_FEATURE_LIST_SAVER_H__
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