253 lines
8.4 KiB
C++
253 lines
8.4 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: 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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// RCS-ID: $Id: xml.h 52976 2008-04-02 10:06:54Z VS $
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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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#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 wxXmlProperty;
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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 wxXmlProperty
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{
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public:
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wxXmlProperty() : m_next(NULL) {}
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wxXmlProperty(const wxString& name, const wxString& value,
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wxXmlProperty *next = NULL)
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: m_name(name), m_value(value), m_next(next) {}
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virtual ~wxXmlProperty() {}
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wxString GetName() const { return m_name; }
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wxString GetValue() const { return m_value; }
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wxXmlProperty *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(wxXmlProperty *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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wxXmlProperty *m_next;
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};
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// Represents node in XML document. Node has name and may have content
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// and properties. Most common node types are wxXML_TEXT_NODE (name and props
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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() : m_properties(NULL), m_parent(NULL),
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m_children(NULL), m_next(NULL) {}
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wxXmlNode(wxXmlNode *parent, wxXmlNodeType type,
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const wxString& name, const wxString& content = wxEmptyString,
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wxXmlProperty *props = NULL, wxXmlNode *next = NULL);
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virtual ~wxXmlNode();
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// copy ctor & operator=. Note that this does NOT copy syblings
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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 properties.
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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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virtual void AddChild(wxXmlNode *child);
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virtual bool InsertChild(wxXmlNode *child, wxXmlNode *followingNode);
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#if wxABI_VERSION >= 20808
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bool InsertChildAfter(wxXmlNode *child, wxXmlNode *precedingNode);
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#endif
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virtual bool RemoveChild(wxXmlNode *child);
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virtual void AddProperty(const wxString& name, const wxString& value);
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virtual bool DeleteProperty(const wxString& name);
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// access methods:
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wxXmlNodeType GetType() const { return m_type; }
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wxString GetName() const { return m_name; }
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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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wxXmlProperty *GetProperties() const { return m_properties; }
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bool GetPropVal(const wxString& propName, wxString *value) const;
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wxString GetPropVal(const wxString& propName,
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const wxString& defaultVal) const;
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bool HasProp(const wxString& propName) const;
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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 SetProperties(wxXmlProperty *prop) { m_properties = prop; }
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virtual void AddProperty(wxXmlProperty *prop);
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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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wxXmlProperty *m_properties;
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wxXmlNode *m_parent, *m_children, *m_next;
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void DoCopy(const wxXmlNode& node);
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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_root); }
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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 = 1) const;
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virtual bool Save(wxOutputStream& stream, int indentstep = 1) const;
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bool IsOk() const { return m_root != NULL; }
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// Returns root node of the document.
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wxXmlNode *GetRoot() const { return m_root; }
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// Returns version of document (may be empty).
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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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wxString GetFileEncoding() const { return m_fileEncoding; }
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// Write-access methods:
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wxXmlNode *DetachRoot() { wxXmlNode *old=m_root; m_root=NULL; return old; }
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void SetRoot(wxXmlNode *node) { wxDELETE(m_root); m_root = 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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#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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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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wxXmlNode *m_root;
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void DoCopy(const wxXmlDocument& doc);
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DECLARE_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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