mirror of
https://github.com/VCMP-SqMod/SqMod.git
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4a6bfc086c
Switched to POCO library for unified platform/library interface. Deprecated the external module API. It was creating more problems than solving. Removed most built-in libraries in favor of system libraries for easier maintenance. Cleaned and secured code with help from static analyzers.
210 lines
7.2 KiB
C++
210 lines
7.2 KiB
C++
//
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// XMLConfiguration.h
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//
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// Library: Util
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// Package: Configuration
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// Module: XMLConfiguration
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//
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// Definition of the XMLConfiguration class.
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#ifndef Util_XMLConfiguration_INCLUDED
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#define Util_XMLConfiguration_INCLUDED
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#include "Poco/Util/Util.h"
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#ifndef POCO_UTIL_NO_XMLCONFIGURATION
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#include "Poco/Util/MapConfiguration.h"
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#include "Poco/DOM/Document.h"
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#include "Poco/DOM/AutoPtr.h"
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#include "Poco/DOM/DOMWriter.h"
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#include "Poco/SAX/InputSource.h"
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#include <istream>
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namespace Poco {
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namespace Util {
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class Util_API XMLConfiguration: public AbstractConfiguration
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/// This configuration class extracts configuration properties
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/// from an XML document. An XPath-like syntax for property
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/// names is supported to allow full access to the XML document.
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/// XML namespaces are not supported. The name of the root element
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/// of the XML document is not significant and ignored.
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/// Periods in tag names are not supported.
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///
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/// Given the following XML document as an example:
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///
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/// <config>
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/// <prop1>value1</prop1>
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/// <prop2>value2</prop2>
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/// <prop3>
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/// <prop4 attr="value3"/>
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/// <prop4 attr="value4"/>
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/// </prop3>
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/// <prop5 id="first">value5</prop5>
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/// <prop5 id="second">value6</prop5>
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/// </config>
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///
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/// The following property names would be valid and would
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/// yield the shown values:
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///
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/// prop1 -> value1
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/// prop2 -> value2
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/// prop3.prop4 -> (empty string)
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/// prop3.prop4[@attr] -> value3
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/// prop3.prop4[1][@attr] -> value4
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/// prop5[0] -> value5
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/// prop5[1] -> value6
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/// prop5[@id=first] -> value5
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/// prop5[@id='second'] -> value6
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///
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/// Enumerating attributes is not supported.
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/// Calling keys("prop3.prop4") will return an empty range.
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///
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/// As a special feature, the delimiter character used to delimit
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/// property names can be changed to something other than period ('.') by
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/// passing the desired character to the constructor. This allows
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/// working with XML documents having element names with periods
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/// in them.
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{
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public:
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XMLConfiguration();
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/// Creates an empty XMLConfiguration with a "config" root element.
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XMLConfiguration(char delim);
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/// Creates an empty XMLConfiguration with a "config" root element,
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/// using the given delimiter char instead of the default '.'.
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XMLConfiguration(Poco::XML::InputSource* pInputSource);
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/// Creates an XMLConfiguration and loads the XML document from
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/// the given InputSource.
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XMLConfiguration(Poco::XML::InputSource* pInputSource, char delim);
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/// Creates an XMLConfiguration and loads the XML document from
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/// the given InputSource. Uses the given delimiter char instead
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/// of the default '.'.
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XMLConfiguration(std::istream& istr);
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/// Creates an XMLConfiguration and loads the XML document from
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/// the given stream.
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XMLConfiguration(std::istream& istr, char delim);
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/// Creates an XMLConfiguration and loads the XML document from
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/// the given stream. Uses the given delimiter char instead
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/// of the default '.'.
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XMLConfiguration(const std::string& path);
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/// Creates an XMLConfiguration and loads the XML document from
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/// the given path.
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XMLConfiguration(const std::string& path, char delim);
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/// Creates an XMLConfiguration and loads the XML document from
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/// the given path. Uses the given delimiter char instead
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/// of the default '.'.
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XMLConfiguration(const Poco::XML::Document* pDocument);
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/// Creates the XMLConfiguration using the given XML document.
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XMLConfiguration(const Poco::XML::Document* pDocument, char delim);
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/// Creates the XMLConfiguration using the given XML document.
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/// Uses the given delimiter char instead of the default '.'.
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XMLConfiguration(const Poco::XML::Node* pNode);
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/// Creates the XMLConfiguration using the given XML node.
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XMLConfiguration(const Poco::XML::Node* pNode, char delim);
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/// Creates the XMLConfiguration using the given XML node.
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/// Uses the given delimiter char instead of the default '.'.
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void load(Poco::XML::InputSource* pInputSource);
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/// Loads the XML document containing the configuration data
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/// from the given InputSource.
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void load(Poco::XML::InputSource* pInputSource, unsigned long namePoolSize);
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/// Loads the XML document containing the configuration data
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/// from the given InputSource. Uses the give namePoolSize (which
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/// should be a suitable prime like 251, 509, 1021, 4093) for the
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/// internal DOM Document's name pool.
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void load(std::istream& istr);
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/// Loads the XML document containing the configuration data
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/// from the given stream.
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void load(const std::string& path);
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/// Loads the XML document containing the configuration data
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/// from the given file.
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void load(const Poco::XML::Document* pDocument);
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/// Loads the XML document containing the configuration data
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/// from the given XML document.
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void load(const Poco::XML::Node* pNode);
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/// Loads the XML document containing the configuration data
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/// from the given XML node.
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void loadEmpty(const std::string& rootElementName);
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/// Loads an empty XML document containing only the
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/// root element with the given name.
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void save(const std::string& path) const;
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/// Writes the XML document containing the configuration data
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/// to the file given by path.
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void save(std::ostream& str) const;
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/// Writes the XML document containing the configuration data
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/// to the given stream.
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void save(Poco::XML::DOMWriter& writer, const std::string& path) const;
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/// Writes the XML document containing the configuration data
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/// to the file given by path, using the given DOMWriter.
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///
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/// This can be used to use a DOMWriter with custom options.
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void save(Poco::XML::DOMWriter& writer, std::ostream& str) const;
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/// Writes the XML document containing the configuration data
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/// to the given stream.
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///
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/// This can be used to use a DOMWriter with custom options.
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protected:
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bool getRaw(const std::string& key, std::string& value) const;
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void setRaw(const std::string& key, const std::string& value);
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void enumerate(const std::string& key, Keys& range) const;
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void removeRaw(const std::string& key);
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~XMLConfiguration();
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private:
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const Poco::XML::Node* findNode(const std::string& key) const;
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Poco::XML::Node* findNode(const std::string& key);
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Poco::XML::Node* findNode(std::string::const_iterator& it, const std::string::const_iterator& end, Poco::XML::Node* pNode, bool create = false) const;
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static Poco::XML::Node* findElement(const std::string& name, Poco::XML::Node* pNode, bool create);
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static Poco::XML::Node* findElement(int index, Poco::XML::Node* pNode, bool create);
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static Poco::XML::Node* findElement(const std::string& attr, const std::string& value, Poco::XML::Node* pNode);
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static Poco::XML::Node* findAttribute(const std::string& name, Poco::XML::Node* pNode, bool create);
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Poco::XML::AutoPtr<Poco::XML::Node> _pRoot;
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Poco::XML::AutoPtr<Poco::XML::Document> _pDocument;
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char _delim;
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};
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} } // namespace Poco::Util
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#endif // POCO_UTIL_NO_XMLCONFIGURATION
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#endif // Util_XMLConfiguration_INCLUDED
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