d13278ecc3
Allow retrieving the DOCTYPE specified in an existing document as well as specifying the DOCTYPE to use when writing a new one. Closes #13779.
358 lines
13 KiB
C++
358 lines
13 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/xml/xml.h
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// Purpose: wxXmlDocument - XML parser & data holder class
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// Author: Vaclav Slavik
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// Created: 2000/03/05
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// Copyright: (c) 2000 Vaclav Slavik
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_XML_H_
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#define _WX_XML_H_
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#include "wx/defs.h"
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#if wxUSE_XML
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#include "wx/string.h"
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#include "wx/object.h"
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#include "wx/list.h"
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#include "wx/versioninfo.h"
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#ifdef WXMAKINGDLL_XML
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#define WXDLLIMPEXP_XML WXEXPORT
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#elif defined(WXUSINGDLL)
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#define WXDLLIMPEXP_XML WXIMPORT
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#else // not making nor using DLL
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#define WXDLLIMPEXP_XML
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#endif
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class WXDLLIMPEXP_FWD_XML wxXmlNode;
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class WXDLLIMPEXP_FWD_XML wxXmlAttribute;
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class WXDLLIMPEXP_FWD_XML wxXmlDocument;
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class WXDLLIMPEXP_FWD_XML wxXmlIOHandler;
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class WXDLLIMPEXP_FWD_BASE wxInputStream;
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class WXDLLIMPEXP_FWD_BASE wxOutputStream;
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// Represents XML node type.
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enum wxXmlNodeType
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{
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// note: values are synchronized with xmlElementType from libxml
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wxXML_ELEMENT_NODE = 1,
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wxXML_ATTRIBUTE_NODE = 2,
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wxXML_TEXT_NODE = 3,
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wxXML_CDATA_SECTION_NODE = 4,
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wxXML_ENTITY_REF_NODE = 5,
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wxXML_ENTITY_NODE = 6,
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wxXML_PI_NODE = 7,
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wxXML_COMMENT_NODE = 8,
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wxXML_DOCUMENT_NODE = 9,
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wxXML_DOCUMENT_TYPE_NODE = 10,
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wxXML_DOCUMENT_FRAG_NODE = 11,
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wxXML_NOTATION_NODE = 12,
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wxXML_HTML_DOCUMENT_NODE = 13
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};
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// Represents node property(ies).
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// Example: in <img src="hello.gif" id="3"/> "src" is property with value
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// "hello.gif" and "id" is prop. with value "3".
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class WXDLLIMPEXP_XML wxXmlAttribute
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{
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public:
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wxXmlAttribute() : m_next(NULL) {}
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wxXmlAttribute(const wxString& name, const wxString& value,
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wxXmlAttribute *next = NULL)
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: m_name(name), m_value(value), m_next(next) {}
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virtual ~wxXmlAttribute() {}
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const wxString& GetName() const { return m_name; }
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const wxString& GetValue() const { return m_value; }
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wxXmlAttribute *GetNext() const { return m_next; }
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void SetName(const wxString& name) { m_name = name; }
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void SetValue(const wxString& value) { m_value = value; }
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void SetNext(wxXmlAttribute *next) { m_next = next; }
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private:
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wxString m_name;
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wxString m_value;
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wxXmlAttribute *m_next;
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};
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#if WXWIN_COMPATIBILITY_2_8
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// NB: #define is used instead of typedef so that forward declarations
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// continue to work
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#define wxXmlProperty wxXmlAttribute
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#endif
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// Represents node in XML document. Node has name and may have content and
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// attributes. Most common node types are wxXML_TEXT_NODE (name and attributes
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// are irrelevant) and wxXML_ELEMENT_NODE (e.g. in <title>hi</title> there is
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// element with name="title", irrelevant content and one child (wxXML_TEXT_NODE
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// with content="hi").
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//
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// If wxUSE_UNICODE is 0, all strings are encoded in the encoding given to Load
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// (default is UTF-8).
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class WXDLLIMPEXP_XML wxXmlNode
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{
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public:
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wxXmlNode()
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: m_attrs(NULL), m_parent(NULL), m_children(NULL), m_next(NULL),
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m_lineNo(-1), m_noConversion(false)
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{
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}
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wxXmlNode(wxXmlNode *parent, wxXmlNodeType type,
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const wxString& name, const wxString& content = wxEmptyString,
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wxXmlAttribute *attrs = NULL, wxXmlNode *next = NULL,
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int lineNo = -1);
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virtual ~wxXmlNode();
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// copy ctor & operator=. Note that this does NOT copy siblings
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// and parent pointer, i.e. m_parent and m_next will be NULL
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// after using copy ctor and are never unmodified by operator=.
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// On the other hand, it DOES copy children and attributes.
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wxXmlNode(const wxXmlNode& node);
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wxXmlNode& operator=(const wxXmlNode& node);
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// user-friendly creation:
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wxXmlNode(wxXmlNodeType type, const wxString& name,
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const wxString& content = wxEmptyString,
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int lineNo = -1);
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virtual void AddChild(wxXmlNode *child);
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virtual bool InsertChild(wxXmlNode *child, wxXmlNode *followingNode);
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virtual bool InsertChildAfter(wxXmlNode *child, wxXmlNode *precedingNode);
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virtual bool RemoveChild(wxXmlNode *child);
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virtual void AddAttribute(const wxString& name, const wxString& value);
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virtual bool DeleteAttribute(const wxString& name);
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// access methods:
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wxXmlNodeType GetType() const { return m_type; }
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const wxString& GetName() const { return m_name; }
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const wxString& GetContent() const { return m_content; }
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bool IsWhitespaceOnly() const;
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int GetDepth(wxXmlNode *grandparent = NULL) const;
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// Gets node content from wxXML_ENTITY_NODE
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// The problem is, <tag>content<tag> is represented as
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// wxXML_ENTITY_NODE name="tag", content=""
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// |-- wxXML_TEXT_NODE or
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// wxXML_CDATA_SECTION_NODE name="" content="content"
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wxString GetNodeContent() const;
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wxXmlNode *GetParent() const { return m_parent; }
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wxXmlNode *GetNext() const { return m_next; }
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wxXmlNode *GetChildren() const { return m_children; }
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wxXmlAttribute *GetAttributes() const { return m_attrs; }
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bool GetAttribute(const wxString& attrName, wxString *value) const;
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wxString GetAttribute(const wxString& attrName,
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const wxString& defaultVal = wxEmptyString) const;
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bool HasAttribute(const wxString& attrName) const;
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int GetLineNumber() const { return m_lineNo; }
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void SetType(wxXmlNodeType type) { m_type = type; }
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void SetName(const wxString& name) { m_name = name; }
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void SetContent(const wxString& con) { m_content = con; }
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void SetParent(wxXmlNode *parent) { m_parent = parent; }
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void SetNext(wxXmlNode *next) { m_next = next; }
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void SetChildren(wxXmlNode *child) { m_children = child; }
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void SetAttributes(wxXmlAttribute *attr) { m_attrs = attr; }
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virtual void AddAttribute(wxXmlAttribute *attr);
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// If true, don't do encoding conversion to improve efficiency - node content is ACII text
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bool GetNoConversion() const { return m_noConversion; }
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void SetNoConversion(bool noconversion) { m_noConversion = noconversion; }
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#if WXWIN_COMPATIBILITY_2_8
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wxDEPRECATED( inline wxXmlAttribute *GetProperties() const );
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wxDEPRECATED( inline bool GetPropVal(const wxString& propName,
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wxString *value) const );
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wxDEPRECATED( inline wxString GetPropVal(const wxString& propName,
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const wxString& defaultVal) const );
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wxDEPRECATED( inline bool HasProp(const wxString& propName) const );
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wxDEPRECATED( inline void SetProperties(wxXmlAttribute *prop) );
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#endif // WXWIN_COMPATIBILITY_2_8
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// The following three functions are backward compatibility, but because
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// they were virtual, we must make it possible to override them. This
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// is done by calling e.g. AddProperty() from AddAttribute(), so we have
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// to keep AddProperty() even if 2.8 compatibility is off. To prevent
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// old code from compiling in that case, we make them private and
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// non-virtual. (This can be removed when WXWIN_COMPATIBILITY_2_8 is
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// removed, we'll have just *Attribute versions then.)
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#if WXWIN_COMPATIBILITY_2_8
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wxDEPRECATED_BUT_USED_INTERNALLY(
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virtual void AddProperty(const wxString& name, const wxString& value) );
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wxDEPRECATED_BUT_USED_INTERNALLY(
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virtual bool DeleteProperty(const wxString& name) );
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wxDEPRECATED_BUT_USED_INTERNALLY(
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virtual void AddProperty(wxXmlAttribute *attr) );
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#else
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private:
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void AddProperty(const wxString& name, const wxString& value);
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bool DeleteProperty(const wxString& name);
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void AddProperty(wxXmlAttribute *attr);
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#endif // WXWIN_COMPATIBILITY_2_8/!WXWIN_COMPATIBILITY_2_8
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private:
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wxXmlNodeType m_type;
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wxString m_name;
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wxString m_content;
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wxXmlAttribute *m_attrs;
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wxXmlNode *m_parent, *m_children, *m_next;
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int m_lineNo; // line number in original file, or -1
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bool m_noConversion; // don't do encoding conversion - node is plain text
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void DoFree();
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void DoCopy(const wxXmlNode& node);
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};
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#if WXWIN_COMPATIBILITY_2_8
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inline wxXmlAttribute *wxXmlNode::GetProperties() const
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{ return GetAttributes(); }
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inline bool wxXmlNode::GetPropVal(const wxString& propName,
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wxString *value) const
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{ return GetAttribute(propName, value); }
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inline wxString wxXmlNode::GetPropVal(const wxString& propName,
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const wxString& defaultVal) const
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{ return GetAttribute(propName, defaultVal); }
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inline bool wxXmlNode::HasProp(const wxString& propName) const
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{ return HasAttribute(propName); }
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inline void wxXmlNode::SetProperties(wxXmlAttribute *prop)
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{ SetAttributes(prop); }
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#endif // WXWIN_COMPATIBILITY_2_8
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class WXDLLIMPEXP_XML wxXmlDoctype
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{
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public:
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explicit
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wxXmlDoctype(const wxString& name = wxString(),
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const wxString& sysid = wxString(),
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const wxString& pubid = wxString())
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: m_rootName(name), m_systemId(sysid), m_publicId(pubid)
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{}
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// Default copy ctor and assignment operators are ok.
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bool IsValid() const;
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void Clear();
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const wxString& GetRootName() const { return m_rootName; }
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const wxString& GetSystemId() const { return m_systemId; }
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const wxString& GetPublicId() const { return m_publicId; }
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wxString GetFullString() const;
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private:
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wxString m_rootName;
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wxString m_systemId;
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wxString m_publicId;
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};
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// special indentation value for wxXmlDocument::Save
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#define wxXML_NO_INDENTATION (-1)
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// flags for wxXmlDocument::Load
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enum wxXmlDocumentLoadFlag
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{
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wxXMLDOC_NONE = 0,
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wxXMLDOC_KEEP_WHITESPACE_NODES = 1
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};
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// This class holds XML data/document as parsed by XML parser.
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class WXDLLIMPEXP_XML wxXmlDocument : public wxObject
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{
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public:
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wxXmlDocument();
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wxXmlDocument(const wxString& filename,
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const wxString& encoding = wxT("UTF-8"));
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wxXmlDocument(wxInputStream& stream,
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const wxString& encoding = wxT("UTF-8"));
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virtual ~wxXmlDocument() { wxDELETE(m_docNode); }
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wxXmlDocument(const wxXmlDocument& doc);
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wxXmlDocument& operator=(const wxXmlDocument& doc);
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// Parses .xml file and loads data. Returns TRUE on success, FALSE
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// otherwise.
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virtual bool Load(const wxString& filename,
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const wxString& encoding = wxT("UTF-8"), int flags = wxXMLDOC_NONE);
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virtual bool Load(wxInputStream& stream,
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const wxString& encoding = wxT("UTF-8"), int flags = wxXMLDOC_NONE);
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// Saves document as .xml file.
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virtual bool Save(const wxString& filename, int indentstep = 2) const;
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virtual bool Save(wxOutputStream& stream, int indentstep = 2) const;
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bool IsOk() const { return GetRoot() != NULL; }
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// Returns root node of the document.
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wxXmlNode *GetRoot() const;
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// Returns the document node.
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wxXmlNode *GetDocumentNode() const { return m_docNode; }
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// Returns version of document (may be empty).
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const wxString& GetVersion() const { return m_version; }
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// Returns encoding of document (may be empty).
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// Note: this is the encoding original file was saved in, *not* the
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// encoding of in-memory representation!
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const wxString& GetFileEncoding() const { return m_fileEncoding; }
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const wxXmlDoctype& GetDoctype() const { return m_doctype; }
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// Write-access methods:
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wxXmlNode *DetachDocumentNode() { wxXmlNode *old=m_docNode; m_docNode=NULL; return old; }
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void SetDocumentNode(wxXmlNode *node) { wxDELETE(m_docNode); m_docNode = node; }
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wxXmlNode *DetachRoot();
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void SetRoot(wxXmlNode *node);
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void SetVersion(const wxString& version) { m_version = version; }
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void SetFileEncoding(const wxString& encoding) { m_fileEncoding = encoding; }
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void SetDoctype(const wxXmlDoctype& doctype) { m_doctype = doctype; }
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void AppendToProlog(wxXmlNode *node);
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#if !wxUSE_UNICODE
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// Returns encoding of in-memory representation of the document
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// (same as passed to Load or ctor, defaults to UTF-8).
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// NB: this is meaningless in Unicode build where data are stored as wchar_t*
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wxString GetEncoding() const { return m_encoding; }
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void SetEncoding(const wxString& enc) { m_encoding = enc; }
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#endif
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static wxVersionInfo GetLibraryVersionInfo();
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private:
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wxString m_version;
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wxString m_fileEncoding;
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#if !wxUSE_UNICODE
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wxString m_encoding;
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#endif
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wxXmlDoctype m_doctype;
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wxXmlNode *m_docNode;
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void DoCopy(const wxXmlDocument& doc);
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wxDECLARE_CLASS(wxXmlDocument);
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};
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#endif // wxUSE_XML
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#endif // _WX_XML_H_
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