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112 lines
4.4 KiB
C++
112 lines
4.4 KiB
C++
// Copyright 2008, 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 declaration of the XsdSchema class.
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#ifndef KML_XSD_XSD_SCHEMA_H__
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#define KML_XSD_XSD_SCHEMA_H__
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#include "boost/intrusive_ptr.hpp"
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#include "boost/scoped_ptr.hpp"
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#include "kml/base/attributes.h"
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#include "kml/base/referent.h"
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#include "kml/base/xmlns.h"
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namespace kmlxsd {
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// XsdSchema corresponds to <xs:schema ... >
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class XsdSchema : public kmlbase::Referent {
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public:
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// Create an XsdSchema from the given attributes. The attributes must
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// include both a targetNamespace="tns" and xmlns:prefix="tns". All xmlns:'s
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// are processed and saved.
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static XsdSchema* Create(const kmlbase::Attributes& attributes) {
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XsdSchema* xsd_schema = new XsdSchema;
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if (xsd_schema->Parse(attributes)) {
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return xsd_schema;
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}
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delete xsd_schema;
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return NULL;
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}
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// Return the value of the targetNamespace= attribute.
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const string& get_target_namespace() const {
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return target_namespace_;
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}
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// Return the xmlns prefix whose value is the targetNamespace. For example,
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// if targetNamespace="a:b:c" and xmlns:foo="a:b:c" this returns "foo".
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const string& get_target_namespace_prefix() const {
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return target_namespace_prefix_;
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}
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// If the given namespace qualified name is prefixed with the target
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// namespace prefix then return true and save the local portion to ncname.
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// For example, if ns_name is "kml:LookAt" and the target namespace prefix
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// is "kml" then name is set to "LookAt" and true is returned.
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bool SplitNsName(const string& ns_name, string* name) const {
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size_t prefix_size = target_namespace_prefix_.size();
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if (ns_name.size() > prefix_size + 1 &&
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ns_name.compare(0, prefix_size + 1,
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target_namespace_prefix_ + ":") == 0) {
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if (name) {
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*name = ns_name.substr(prefix_size + 1);
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}
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return true;
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}
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return false;
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}
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private:
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XsdSchema() {} // Use static Create().
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// Set state from attributes, returns true if both targetNamespace= and the
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// target namespace prefix were found, false otherwise.
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bool Parse(const kmlbase::Attributes& attributes) {
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attributes.GetString("targetNamespace", &target_namespace_);
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if (target_namespace_.empty()) {
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return false;
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}
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xmlns_.reset(kmlbase::Xmlns::Create(attributes));
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if (!xmlns_.get()) {
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return false;
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}
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// Find the prefix used for the targetNamespace.
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// For example, if xmlns:foo="a:b:c" and targetNamespace="a:b:c" then the
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// prefix we seek is "foo". A targetNamespace and xmlns:prefix _must_
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// appear in the <schema> for this to be a valid XSD.
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target_namespace_prefix_ = xmlns_->GetKey(target_namespace_);
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return !target_namespace_.empty() && !target_namespace_prefix_.empty();
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}
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boost::scoped_ptr<kmlbase::Xmlns> xmlns_;
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string target_namespace_;
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string target_namespace_prefix_;
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};
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typedef boost::intrusive_ptr<XsdSchema> XsdSchemaPtr;
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} // end namespace kmlxsd
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#endif // KML_XSD_XSD_SCHEMA_H__
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