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tinyxml.h
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tinyxml.h
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/*
www.sourceforge.net/projects/tinyxml
Original code by Lee Thomason (www.grinninglizard.com)
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any
damages arising from the use of this software.
Permission is granted to anyone to use this software for any
purpose, including commercial applications, and to alter it and
redistribute it freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must
not claim that you wrote the original software. If you use this
software in a product, an acknowledgment in the product documentation
would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and
must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
*/
#ifndef TINYXML_INCLUDED
#define TINYXML_INCLUDED
#ifdef _MSC_VER
#pragma warning( push )
#pragma warning( disable : 4530 )
#pragma warning( disable : 4786 )
#endif
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
// Help out windows:
#if defined( _DEBUG ) && !defined( DEBUG )
#define DEBUG
#endif
// XXX just force to always on
#define TIXML_USE_STL
#ifdef TIXML_USE_STL
#include <string>
#include <iostream>
#include <sstream>
#define TIXML_STRING std::string
#else
#include "tinystr.h"
#define TIXML_STRING TiXmlString
#endif
// Deprecated library function hell. Compilers want to use the
// new safe versions. This probably doesn't fully address the problem,
// but it gets closer. There are too many compilers for me to fully
// test. If you get compilation troubles, undefine TIXML_SAFE
#define TIXML_SAFE
#ifdef TIXML_SAFE
#if defined(_MSC_VER) && (_MSC_VER >= 1400 )
// Microsoft visual studio, version 2005 and higher.
#define TIXML_SNPRINTF _snprintf_s
#define TIXML_SSCANF sscanf_s
#elif defined(_MSC_VER) && (_MSC_VER >= 1200 )
// Microsoft visual studio, version 6 and higher.
//#pragma message( "Using _sn* functions." )
#define TIXML_SNPRINTF _snprintf
#define TIXML_SSCANF sscanf
#elif defined(__GNUC__) && (__GNUC__ >= 3 )
// GCC version 3 and higher.s
//#warning( "Using sn* functions." )
#define TIXML_SNPRINTF snprintf
#define TIXML_SSCANF sscanf
#else
#define TIXML_SNPRINTF snprintf
#define TIXML_SSCANF sscanf
#endif
#endif
class TiXmlDocument;
class TiXmlElement;
class TiXmlComment;
class TiXmlUnknown;
class TiXmlAttribute;
class TiXmlText;
class TiXmlDeclaration;
class TiXmlParsingData;
const int TIXML_MAJOR_VERSION = 2;
const int TIXML_MINOR_VERSION = 6;
const int TIXML_PATCH_VERSION = 2;
/* Internal structure for tracking location of items
in the XML file.
*/
struct TiXmlCursor
{
TiXmlCursor() { Clear(); }
void Clear() { row = col = -1; }
int row; // 0 based.
int col; // 0 based.
};
/**
Implements the interface to the "Visitor pattern" (see the Accept() method.)
If you call the Accept() method, it requires being passed a TiXmlVisitor
class to handle callbacks. For nodes that contain other nodes (Document, Element)
you will get called with a VisitEnter/VisitExit pair. Nodes that are always leaves
are simply called with Visit().
If you return 'true' from a Visit method, recursive parsing will continue. If you return
false, <b>no children of this node or its sibilings</b> will be Visited.
All flavors of Visit methods have a default implementation that returns 'true' (continue
visiting). You need to only override methods that are interesting to you.
Generally Accept() is called on the TiXmlDocument, although all nodes suppert Visiting.
You should never change the document from a callback.
@sa TiXmlNode::Accept()
*/
class TiXmlVisitor
{
public:
virtual ~TiXmlVisitor() {}
/// Visit a document.
virtual bool VisitEnter( const TiXmlDocument& /*doc*/ ) { return true; }
/// Visit a document.
virtual bool VisitExit( const TiXmlDocument& /*doc*/ ) { return true; }
/// Visit an element.
virtual bool VisitEnter( const TiXmlElement& /*element*/, const TiXmlAttribute* /*firstAttribute*/ ) { return true; }
/// Visit an element.
virtual bool VisitExit( const TiXmlElement& /*element*/ ) { return true; }
/// Visit a declaration
virtual bool Visit( const TiXmlDeclaration& /*declaration*/ ) { return true; }
/// Visit a text node
virtual bool Visit( const TiXmlText& /*text*/ ) { return true; }
/// Visit a comment node
virtual bool Visit( const TiXmlComment& /*comment*/ ) { return true; }
/// Visit an unknown node
virtual bool Visit( const TiXmlUnknown& /*unknown*/ ) { return true; }
};
// Only used by Attribute::Query functions
enum
{
TIXML_SUCCESS,
TIXML_NO_ATTRIBUTE,
TIXML_WRONG_TYPE
};
// Used by the parsing routines.
enum TiXmlEncoding
{
TIXML_ENCODING_UNKNOWN,
TIXML_ENCODING_UTF8,
TIXML_ENCODING_LEGACY
};
const TiXmlEncoding TIXML_DEFAULT_ENCODING = TIXML_ENCODING_UNKNOWN;
/** TiXmlBase is a base class for every class in TinyXml.
It does little except to establish that TinyXml classes
can be printed and provide some utility functions.
In XML, the document and elements can contain
other elements and other types of nodes.
@verbatim
A Document can contain: Element (container or leaf)
Comment (leaf)
Unknown (leaf)
Declaration( leaf )
An Element can contain: Element (container or leaf)
Text (leaf)
Attributes (not on tree)
Comment (leaf)
Unknown (leaf)
A Decleration contains: Attributes (not on tree)
@endverbatim
*/
class TiXmlBase
{
friend class TiXmlNode;
friend class TiXmlElement;
friend class TiXmlDocument;
public:
TiXmlBase() : userData(0) {}
virtual ~TiXmlBase() {}
/** All TinyXml classes can print themselves to a filestream
or the string class (TiXmlString in non-STL mode, std::string
in STL mode.) Either or both cfile and str can be null.
This is a formatted print, and will insert
tabs and newlines.
(For an unformatted stream, use the << operator.)
*/
virtual void Print( FILE* cfile, int depth ) const = 0;
/** The world does not agree on whether white space should be kept or
not. In order to make everyone happy, these global, static functions
are provided to set whether or not TinyXml will condense all white space
into a single space or not. The default is to condense. Note changing this
value is not thread safe.
*/
static void SetCondenseWhiteSpace( bool condense ) { condenseWhiteSpace = condense; }
/// Return the current white space setting.
static bool IsWhiteSpaceCondensed() { return condenseWhiteSpace; }
/** Return the position, in the original source file, of this node or attribute.
The row and column are 1-based. (That is the first row and first column is
1,1). If the returns values are 0 or less, then the parser does not have
a row and column value.
Generally, the row and column value will be set when the TiXmlDocument::Load(),
TiXmlDocument::LoadFile(), or any TiXmlNode::Parse() is called. It will NOT be set
when the DOM was created from operator>>.
The values reflect the initial load. Once the DOM is modified programmatically
(by adding or changing nodes and attributes) the new values will NOT update to
reflect changes in the document.
There is a minor performance cost to computing the row and column. Computation
can be disabled if TiXmlDocument::SetTabSize() is called with 0 as the value.
@sa TiXmlDocument::SetTabSize()
*/
int Row() const { return location.row + 1; }
int Column() const { return location.col + 1; } ///< See Row()
void SetUserData( void* user ) { userData = user; } ///< Set a pointer to arbitrary user data.
void* GetUserData() { return userData; } ///< Get a pointer to arbitrary user data.
const void* GetUserData() const { return userData; } ///< Get a pointer to arbitrary user data.
// Table that returs, for a given lead byte, the total number of bytes
// in the UTF-8 sequence.
static const int utf8ByteTable[256];
virtual const char* Parse( const char* p,
TiXmlParsingData* data,
TiXmlEncoding encoding /*= TIXML_ENCODING_UNKNOWN */ ) = 0;
/** Expands entities in a string. Note this should not contian the tag's '<', '>', etc,
or they will be transformed into entities!
*/
static void EncodeString( const TIXML_STRING& str, TIXML_STRING* out );
enum
{
TIXML_NO_ERROR = 0,
TIXML_ERROR,
TIXML_ERROR_OPENING_FILE,
TIXML_ERROR_PARSING_ELEMENT,
TIXML_ERROR_FAILED_TO_READ_ELEMENT_NAME,
TIXML_ERROR_READING_ELEMENT_VALUE,
TIXML_ERROR_READING_ATTRIBUTES,
TIXML_ERROR_PARSING_EMPTY,
TIXML_ERROR_READING_END_TAG,
TIXML_ERROR_PARSING_UNKNOWN,
TIXML_ERROR_PARSING_COMMENT,
TIXML_ERROR_PARSING_DECLARATION,
TIXML_ERROR_DOCUMENT_EMPTY,
TIXML_ERROR_EMBEDDED_NULL,
TIXML_ERROR_PARSING_CDATA,
TIXML_ERROR_DOCUMENT_TOP_ONLY,
TIXML_ERROR_STRING_COUNT
};
protected:
static const char* SkipWhiteSpace( const char*, TiXmlEncoding encoding );
inline static bool IsWhiteSpace( char c )
{
return ( isspace( (unsigned char) c ) || c == '\n' || c == '\r' );
}
inline static bool IsWhiteSpace( int c )
{
if ( c < 256 )
return IsWhiteSpace( (char) c );
return false; // Again, only truly correct for English/Latin...but usually works.
}
#ifdef TIXML_USE_STL
static bool StreamWhiteSpace( std::istream * in, TIXML_STRING * tag );
static bool StreamTo( std::istream * in, int character, TIXML_STRING * tag );
#endif
/* Reads an XML name into the string provided. Returns
a pointer just past the last character of the name,
or 0 if the function has an error.
*/
static const char* ReadName( const char* p, TIXML_STRING* name, TiXmlEncoding encoding );
/* Reads text. Returns a pointer past the given end tag.
Wickedly complex options, but it keeps the (sensitive) code in one place.
*/
static const char* ReadText( const char* in, // where to start
TIXML_STRING* text, // the string read
bool ignoreWhiteSpace, // whether to keep the white space
const char* endTag, // what ends this text
bool ignoreCase, // whether to ignore case in the end tag
TiXmlEncoding encoding ); // the current encoding
// If an entity has been found, transform it into a character.
static const char* GetEntity( const char* in, char* value, int* length, TiXmlEncoding encoding );
// Get a character, while interpreting entities.
// The length can be from 0 to 4 bytes.
inline static const char* GetChar( const char* p, char* _value, int* length, TiXmlEncoding encoding )
{
assert( p );
if ( encoding == TIXML_ENCODING_UTF8 )
{
*length = utf8ByteTable[ *((const unsigned char*)p) ];
assert( *length >= 0 && *length < 5 );
}
else
{
*length = 1;
}
if ( *length == 1 )
{
if ( *p == '&' )
return GetEntity( p, _value, length, encoding );
*_value = *p;
return p+1;
}
else if ( *length )
{
//strncpy( _value, p, *length ); // lots of compilers don't like this function (unsafe),
// and the null terminator isn't needed
for( int i=0; p[i] && i<*length; ++i ) {
_value[i] = p[i];
}
return p + (*length);
}
else
{
// Not valid text.
return 0;
}
}
// Return true if the next characters in the stream are any of the endTag sequences.
// Ignore case only works for english, and should only be relied on when comparing
// to English words: StringEqual( p, "version", true ) is fine.
static bool StringEqual( const char* p,
const char* endTag,
bool ignoreCase,
TiXmlEncoding encoding );
static const char* errorString[ TIXML_ERROR_STRING_COUNT ];
TiXmlCursor location;
/// Field containing a generic user pointer
void* userData;
// None of these methods are reliable for any language except English.
// Good for approximation, not great for accuracy.
static int IsAlpha( unsigned char anyByte, TiXmlEncoding encoding );
static int IsAlphaNum( unsigned char anyByte, TiXmlEncoding encoding );
inline static int ToLower( int v, TiXmlEncoding encoding )
{
if ( encoding == TIXML_ENCODING_UTF8 )
{
if ( v < 128 ) return tolower( v );
return v;
}
else
{
return tolower( v );
}
}
static void ConvertUTF32ToUTF8( unsigned long input, char* output, int* length );
private:
TiXmlBase( const TiXmlBase& ); // not implemented.
void operator=( const TiXmlBase& base ); // not allowed.
struct Entity
{
const char* str;
unsigned int strLength;
char chr;
};
enum
{
NUM_ENTITY = 5,
MAX_ENTITY_LENGTH = 6
};
static Entity entity[ NUM_ENTITY ];
static bool condenseWhiteSpace;
};
/** The parent class for everything in the Document Object Model.
(Except for attributes).
Nodes have siblings, a parent, and children. A node can be
in a document, or stand on its own. The type of a TiXmlNode
can be queried, and it can be cast to its more defined type.
*/
class TiXmlNode : public TiXmlBase
{
friend class TiXmlDocument;
friend class TiXmlElement;
public:
#ifdef TIXML_USE_STL
/** An input stream operator, for every class. Tolerant of newlines and
formatting, but doesn't expect them.
*/
friend std::istream& operator >> (std::istream& in, TiXmlNode& base);
/** An output stream operator, for every class. Note that this outputs
without any newlines or formatting, as opposed to Print(), which
includes tabs and new lines.
The operator<< and operator>> are not completely symmetric. Writing
a node to a stream is very well defined. You'll get a nice stream
of output, without any extra whitespace or newlines.
But reading is not as well defined. (As it always is.) If you create
a TiXmlElement (for example) and read that from an input stream,
the text needs to define an element or junk will result. This is
true of all input streams, but it's worth keeping in mind.
A TiXmlDocument will read nodes until it reads a root element, and
all the children of that root element.
*/
friend std::ostream& operator<< (std::ostream& out, const TiXmlNode& base);
/// Appends the XML node or attribute to a std::string.
friend std::string& operator<< (std::string& out, const TiXmlNode& base );
#endif
/** The types of XML nodes supported by TinyXml. (All the
unsupported types are picked up by UNKNOWN.)
*/
enum NodeType
{
TINYXML_DOCUMENT,
TINYXML_ELEMENT,
TINYXML_COMMENT,
TINYXML_UNKNOWN,
TINYXML_TEXT,
TINYXML_DECLARATION,
TINYXML_TYPECOUNT
};
virtual ~TiXmlNode();
/** The meaning of 'value' changes for the specific type of
TiXmlNode.
@verbatim
Document: filename of the xml file
Element: name of the element
Comment: the comment text
Unknown: the tag contents
Text: the text string
@endverbatim
The subclasses will wrap this function.
*/
const char *Value() const { return value.c_str (); }
#ifdef TIXML_USE_STL
/** Return Value() as a std::string. If you only use STL,
this is more efficient than calling Value().
Only available in STL mode.
*/
const std::string& ValueStr() const { return value; }
#endif
const TIXML_STRING& ValueTStr() const { return value; }
/** Changes the value of the node. Defined as:
@verbatim
Document: filename of the xml file
Element: name of the element
Comment: the comment text
Unknown: the tag contents
Text: the text string
@endverbatim
*/
void SetValue(const char * _value) { value = _value;}
#ifdef TIXML_USE_STL
/// STL std::string form.
void SetValue( const std::string& _value ) { value = _value; }
#endif
/// Delete all the children of this node. Does not affect 'this'.
void Clear();
/// One step up the DOM.
TiXmlNode* Parent() { return parent; }
const TiXmlNode* Parent() const { return parent; }
const TiXmlNode* FirstChild() const { return firstChild; } ///< The first child of this node. Will be null if there are no children.
TiXmlNode* FirstChild() { return firstChild; }
const TiXmlNode* FirstChild( const char * value ) const; ///< The first child of this node with the matching 'value'. Will be null if none found.
/// The first child of this node with the matching 'value'. Will be null if none found.
TiXmlNode* FirstChild( const char * _value ) {
// Call through to the const version - safe since nothing is changed. Exiting syntax: cast this to a const (always safe)
// call the method, cast the return back to non-const.
return const_cast< TiXmlNode* > ((const_cast< const TiXmlNode* >(this))->FirstChild( _value ));
}
const TiXmlNode* LastChild() const { return lastChild; } /// The last child of this node. Will be null if there are no children.
TiXmlNode* LastChild() { return lastChild; }
const TiXmlNode* LastChild( const char * value ) const; /// The last child of this node matching 'value'. Will be null if there are no children.
TiXmlNode* LastChild( const char * _value ) {
return const_cast< TiXmlNode* > ((const_cast< const TiXmlNode* >(this))->LastChild( _value ));
}
#ifdef TIXML_USE_STL
const TiXmlNode* FirstChild( const std::string& _value ) const { return FirstChild (_value.c_str ()); } ///< STL std::string form.
TiXmlNode* FirstChild( const std::string& _value ) { return FirstChild (_value.c_str ()); } ///< STL std::string form.
const TiXmlNode* LastChild( const std::string& _value ) const { return LastChild (_value.c_str ()); } ///< STL std::string form.
TiXmlNode* LastChild( const std::string& _value ) { return LastChild (_value.c_str ()); } ///< STL std::string form.
#endif
/** An alternate way to walk the children of a node.
One way to iterate over nodes is:
@verbatim
for( child = parent->FirstChild(); child; child = child->NextSibling() )
@endverbatim
IterateChildren does the same thing with the syntax:
@verbatim
child = 0;
while( child = parent->IterateChildren( child ) )
@endverbatim
IterateChildren takes the previous child as input and finds
the next one. If the previous child is null, it returns the
first. IterateChildren will return null when done.
*/
const TiXmlNode* IterateChildren( const TiXmlNode* previous ) const;
TiXmlNode* IterateChildren( const TiXmlNode* previous ) {
return const_cast< TiXmlNode* >( (const_cast< const TiXmlNode* >(this))->IterateChildren( previous ) );
}
/// This flavor of IterateChildren searches for children with a particular 'value'
const TiXmlNode* IterateChildren( const char * value, const TiXmlNode* previous ) const;
TiXmlNode* IterateChildren( const char * _value, const TiXmlNode* previous ) {
return const_cast< TiXmlNode* >( (const_cast< const TiXmlNode* >(this))->IterateChildren( _value, previous ) );
}
#ifdef TIXML_USE_STL
const TiXmlNode* IterateChildren( const std::string& _value, const TiXmlNode* previous ) const { return IterateChildren (_value.c_str (), previous); } ///< STL std::string form.
TiXmlNode* IterateChildren( const std::string& _value, const TiXmlNode* previous ) { return IterateChildren (_value.c_str (), previous); } ///< STL std::string form.
#endif
/** Add a new node related to this. Adds a child past the LastChild.
Returns a pointer to the new object or NULL if an error occured.
*/
TiXmlNode* InsertEndChild( const TiXmlNode& addThis );
/** Add a new node related to this. Adds a child past the LastChild.
NOTE: the node to be added is passed by pointer, and will be
henceforth owned (and deleted) by tinyXml. This method is efficient
and avoids an extra copy, but should be used with care as it
uses a different memory model than the other insert functions.
@sa InsertEndChild
*/
TiXmlNode* LinkEndChild( TiXmlNode* addThis );
/** Add a new node related to this. Adds a child before the specified child.
Returns a pointer to the new object or NULL if an error occured.
*/
TiXmlNode* InsertBeforeChild( TiXmlNode* beforeThis, const TiXmlNode& addThis );
/** Add a new node related to this. Adds a child after the specified child.
Returns a pointer to the new object or NULL if an error occured.
*/
TiXmlNode* InsertAfterChild( TiXmlNode* afterThis, const TiXmlNode& addThis );
/** Replace a child of this node.
Returns a pointer to the new object or NULL if an error occured.
*/
TiXmlNode* ReplaceChild( TiXmlNode* replaceThis, const TiXmlNode& withThis );
/// Delete a child of this node.
bool RemoveChild( TiXmlNode* removeThis );
/// Navigate to a sibling node.
const TiXmlNode* PreviousSibling() const { return prev; }
TiXmlNode* PreviousSibling() { return prev; }
/// Navigate to a sibling node.
const TiXmlNode* PreviousSibling( const char * ) const;
TiXmlNode* PreviousSibling( const char *_prev ) {
return const_cast< TiXmlNode* >( (const_cast< const TiXmlNode* >(this))->PreviousSibling( _prev ) );
}
#ifdef TIXML_USE_STL
const TiXmlNode* PreviousSibling( const std::string& _value ) const { return PreviousSibling (_value.c_str ()); } ///< STL std::string form.
TiXmlNode* PreviousSibling( const std::string& _value ) { return PreviousSibling (_value.c_str ()); } ///< STL std::string form.
const TiXmlNode* NextSibling( const std::string& _value) const { return NextSibling (_value.c_str ()); } ///< STL std::string form.
TiXmlNode* NextSibling( const std::string& _value) { return NextSibling (_value.c_str ()); } ///< STL std::string form.
#endif
/// Navigate to a sibling node.
const TiXmlNode* NextSibling() const { return next; }
TiXmlNode* NextSibling() { return next; }
/// Navigate to a sibling node with the given 'value'.
const TiXmlNode* NextSibling( const char * ) const;
TiXmlNode* NextSibling( const char* _next ) {
return const_cast< TiXmlNode* >( (const_cast< const TiXmlNode* >(this))->NextSibling( _next ) );
}
/** Convenience function to get through elements.
Calls NextSibling and ToElement. Will skip all non-Element
nodes. Returns 0 if there is not another element.
*/
const TiXmlElement* NextSiblingElement() const;
TiXmlElement* NextSiblingElement() {
return const_cast< TiXmlElement* >( (const_cast< const TiXmlNode* >(this))->NextSiblingElement() );
}
/** Convenience function to get through elements.
Calls NextSibling and ToElement. Will skip all non-Element
nodes. Returns 0 if there is not another element.
*/
const TiXmlElement* NextSiblingElement( const char * ) const;
TiXmlElement* NextSiblingElement( const char *_next ) {
return const_cast< TiXmlElement* >( (const_cast< const TiXmlNode* >(this))->NextSiblingElement( _next ) );
}
#ifdef TIXML_USE_STL
const TiXmlElement* NextSiblingElement( const std::string& _value) const { return NextSiblingElement (_value.c_str ()); } ///< STL std::string form.
TiXmlElement* NextSiblingElement( const std::string& _value) { return NextSiblingElement (_value.c_str ()); } ///< STL std::string form.
#endif
/// Convenience function to get through elements.
const TiXmlElement* FirstChildElement() const;
TiXmlElement* FirstChildElement() {
return const_cast< TiXmlElement* >( (const_cast< const TiXmlNode* >(this))->FirstChildElement() );
}
/// Convenience function to get through elements.
const TiXmlElement* FirstChildElement( const char * _value ) const;
TiXmlElement* FirstChildElement( const char * _value ) {
return const_cast< TiXmlElement* >( (const_cast< const TiXmlNode* >(this))->FirstChildElement( _value ) );
}
#ifdef TIXML_USE_STL
const TiXmlElement* FirstChildElement( const std::string& _value ) const { return FirstChildElement (_value.c_str ()); } ///< STL std::string form.
TiXmlElement* FirstChildElement( const std::string& _value ) { return FirstChildElement (_value.c_str ()); } ///< STL std::string form.
#endif
/** Query the type (as an enumerated value, above) of this node.
The possible types are: TINYXML_DOCUMENT, TINYXML_ELEMENT, TINYXML_COMMENT,
TINYXML_UNKNOWN, TINYXML_TEXT, and TINYXML_DECLARATION.
*/
int Type() const { return type; }
/** Return a pointer to the Document this node lives in.
Returns null if not in a document.
*/
const TiXmlDocument* GetDocument() const;
TiXmlDocument* GetDocument() {
return const_cast< TiXmlDocument* >( (const_cast< const TiXmlNode* >(this))->GetDocument() );
}
/// Returns true if this node has no children.
bool NoChildren() const { return !firstChild; }
virtual const TiXmlDocument* ToDocument() const { return 0; } ///< Cast to a more defined type. Will return null if not of the requested type.
virtual const TiXmlElement* ToElement() const { return 0; } ///< Cast to a more defined type. Will return null if not of the requested type.
virtual const TiXmlComment* ToComment() const { return 0; } ///< Cast to a more defined type. Will return null if not of the requested type.
virtual const TiXmlUnknown* ToUnknown() const { return 0; } ///< Cast to a more defined type. Will return null if not of the requested type.
virtual const TiXmlText* ToText() const { return 0; } ///< Cast to a more defined type. Will return null if not of the requested type.
virtual const TiXmlDeclaration* ToDeclaration() const { return 0; } ///< Cast to a more defined type. Will return null if not of the requested type.
virtual TiXmlDocument* ToDocument() { return 0; } ///< Cast to a more defined type. Will return null if not of the requested type.
virtual TiXmlElement* ToElement() { return 0; } ///< Cast to a more defined type. Will return null if not of the requested type.
virtual TiXmlComment* ToComment() { return 0; } ///< Cast to a more defined type. Will return null if not of the requested type.
virtual TiXmlUnknown* ToUnknown() { return 0; } ///< Cast to a more defined type. Will return null if not of the requested type.
virtual TiXmlText* ToText() { return 0; } ///< Cast to a more defined type. Will return null if not of the requested type.
virtual TiXmlDeclaration* ToDeclaration() { return 0; } ///< Cast to a more defined type. Will return null if not of the requested type.
/** Create an exact duplicate of this node and return it. The memory must be deleted
by the caller.
*/
virtual TiXmlNode* Clone() const = 0;
/** Accept a hierchical visit the nodes in the TinyXML DOM. Every node in the
XML tree will be conditionally visited and the host will be called back
via the TiXmlVisitor interface.
This is essentially a SAX interface for TinyXML. (Note however it doesn't re-parse
the XML for the callbacks, so the performance of TinyXML is unchanged by using this
interface versus any other.)
The interface has been based on ideas from:
- http://www.saxproject.org/
- http://c2.com/cgi/wiki?HierarchicalVisitorPattern
Which are both good references for "visiting".
An example of using Accept():
@verbatim
TiXmlPrinter printer;
tinyxmlDoc.Accept( &printer );
const char* xmlcstr = printer.CStr();
@endverbatim
*/
virtual bool Accept( TiXmlVisitor* visitor ) const = 0;
protected:
TiXmlNode( NodeType _type );
// Copy to the allocated object. Shared functionality between Clone, Copy constructor,
// and the assignment operator.
void CopyTo( TiXmlNode* target ) const;
#ifdef TIXML_USE_STL
// The real work of the input operator.
virtual void StreamIn( std::istream* in, TIXML_STRING* tag ) = 0;
#endif
// Figure out what is at *p, and parse it. Returns null if it is not an xml node.
TiXmlNode* Identify( const char* start, TiXmlEncoding encoding );
TiXmlNode* parent;
NodeType type;
TiXmlNode* firstChild;
TiXmlNode* lastChild;
TIXML_STRING value;
TiXmlNode* prev;
TiXmlNode* next;
private:
TiXmlNode( const TiXmlNode& ); // not implemented.
void operator=( const TiXmlNode& base ); // not allowed.
};
/** An attribute is a name-value pair. Elements have an arbitrary
number of attributes, each with a unique name.
@note The attributes are not TiXmlNodes, since they are not
part of the tinyXML document object model. There are other
suggested ways to look at this problem.
*/
class TiXmlAttribute : public TiXmlBase
{
friend class TiXmlAttributeSet;
public:
/// Construct an empty attribute.
TiXmlAttribute() : TiXmlBase()
{
document = 0;
prev = next = 0;
}
#ifdef TIXML_USE_STL
/// std::string constructor.
TiXmlAttribute( const std::string& _name, const std::string& _value )
{
name = _name;
value = _value;
document = 0;
prev = next = 0;
}
#endif
/// Construct an attribute with a name and value.
TiXmlAttribute( const char * _name, const char * _value )
{
name = _name;
value = _value;
document = 0;
prev = next = 0;
}
const char* Name() const { return name.c_str(); } ///< Return the name of this attribute.
const char* Value() const { return value.c_str(); } ///< Return the value of this attribute.
#ifdef TIXML_USE_STL
const std::string& ValueStr() const { return value; } ///< Return the value of this attribute.
#endif
int IntValue() const; ///< Return the value of this attribute, converted to an integer.
double DoubleValue() const; ///< Return the value of this attribute, converted to a double.
// Get the tinyxml string representation
const TIXML_STRING& NameTStr() const { return name; }
/** QueryIntValue examines the value string. It is an alternative to the
IntValue() method with richer error checking.
If the value is an integer, it is stored in 'value' and
the call returns TIXML_SUCCESS. If it is not
an integer, it returns TIXML_WRONG_TYPE.
A specialized but useful call. Note that for success it returns 0,
which is the opposite of almost all other TinyXml calls.
*/
int QueryIntValue( int* _value ) const;
/// QueryDoubleValue examines the value string. See QueryIntValue().
int QueryDoubleValue( double* _value ) const;
void SetName( const char* _name ) { name = _name; } ///< Set the name of this attribute.
void SetValue( const char* _value ) { value = _value; } ///< Set the value.
void SetIntValue( int _value ); ///< Set the value from an integer.
void SetDoubleValue( double _value ); ///< Set the value from a double.
#ifdef TIXML_USE_STL
/// STL std::string form.
void SetName( const std::string& _name ) { name = _name; }
/// STL std::string form.
void SetValue( const std::string& _value ) { value = _value; }
#endif
/// Get the next sibling attribute in the DOM. Returns null at end.
const TiXmlAttribute* Next() const;
TiXmlAttribute* Next() {
return const_cast< TiXmlAttribute* >( (const_cast< const TiXmlAttribute* >(this))->Next() );
}
/// Get the previous sibling attribute in the DOM. Returns null at beginning.
const TiXmlAttribute* Previous() const;
TiXmlAttribute* Previous() {
return const_cast< TiXmlAttribute* >( (const_cast< const TiXmlAttribute* >(this))->Previous() );
}
bool operator==( const TiXmlAttribute& rhs ) const { return rhs.name == name; }
bool operator<( const TiXmlAttribute& rhs ) const { return name < rhs.name; }
bool operator>( const TiXmlAttribute& rhs ) const { return name > rhs.name; }
/* Attribute parsing starts: first letter of the name
returns: the next char after the value end quote
*/
virtual const char* Parse( const char* p, TiXmlParsingData* data, TiXmlEncoding encoding );
// Prints this Attribute to a FILE stream.
virtual void Print( FILE* cfile, int depth ) const {
Print( cfile, depth, 0 );
}
void Print( FILE* cfile, int depth, TIXML_STRING* str ) const;
// [internal use]
// Set the document pointer so the attribute can report errors.
void SetDocument( TiXmlDocument* doc ) { document = doc; }
private:
TiXmlAttribute( const TiXmlAttribute& ); // not implemented.
void operator=( const TiXmlAttribute& base ); // not allowed.
TiXmlDocument* document; // A pointer back to a document, for error reporting.
TIXML_STRING name;
TIXML_STRING value;
TiXmlAttribute* prev;
TiXmlAttribute* next;
};
/* A class used to manage a group of attributes.
It is only used internally, both by the ELEMENT and the DECLARATION.
The set can be changed transparent to the Element and Declaration
classes that use it, but NOT transparent to the Attribute
which has to implement a next() and previous() method. Which makes
it a bit problematic and prevents the use of STL.
This version is implemented with circular lists because:
- I like circular lists
- it demonstrates some independence from the (typical) doubly linked list.
*/
class TiXmlAttributeSet
{
public:
TiXmlAttributeSet();
~TiXmlAttributeSet();
void Add( TiXmlAttribute* attribute );
void Remove( TiXmlAttribute* attribute );
const TiXmlAttribute* First() const { return ( sentinel.next == &sentinel ) ? 0 : sentinel.next; }
TiXmlAttribute* First() { return ( sentinel.next == &sentinel ) ? 0 : sentinel.next; }
const TiXmlAttribute* Last() const { return ( sentinel.prev == &sentinel ) ? 0 : sentinel.prev; }
TiXmlAttribute* Last() { return ( sentinel.prev == &sentinel ) ? 0 : sentinel.prev; }
TiXmlAttribute* Find( const char* _name ) const;
TiXmlAttribute* FindOrCreate( const char* _name );
# ifdef TIXML_USE_STL
TiXmlAttribute* Find( const std::string& _name ) const;
TiXmlAttribute* FindOrCreate( const std::string& _name );
# endif
private:
//*ME: Because of hidden/disabled copy-construktor in TiXmlAttribute (sentinel-element),
//*ME: this class must be also use a hidden/disabled copy-constructor !!!
TiXmlAttributeSet( const TiXmlAttributeSet& ); // not allowed
void operator=( const TiXmlAttributeSet& ); // not allowed (as TiXmlAttribute)
TiXmlAttribute sentinel;
};
/** The element is a container class. It has a value, the element name,
and can contain other elements, text, comments, and unknowns.
Elements also contain an arbitrary number of attributes.
*/
class TiXmlElement : public TiXmlNode
{
public:
/// Construct an element.
TiXmlElement (const char * in_value);
#ifdef TIXML_USE_STL
/// std::string constructor.
TiXmlElement( const std::string& _value );
#endif
TiXmlElement( const TiXmlElement& );
TiXmlElement& operator=( const TiXmlElement& base );
virtual ~TiXmlElement();
/** Given an attribute name, Attribute() returns the value
for the attribute of that name, or null if none exists.
*/
const char* Attribute( const char* name ) const;
/** Given an attribute name, Attribute() returns the value
for the attribute of that name, or null if none exists.
If the attribute exists and can be converted to an integer,
the integer value will be put in the return 'i', if 'i'
is non-null.
*/
const char* Attribute( const char* name, int* i ) const;
/** Given an attribute name, Attribute() returns the value
for the attribute of that name, or null if none exists.
If the attribute exists and can be converted to an double,
the double value will be put in the return 'd', if 'd'
is non-null.
*/
const char* Attribute( const char* name, double* d ) const;
/** QueryIntAttribute examines the attribute - it is an alternative to the
Attribute() method with richer error checking.
If the attribute is an integer, it is stored in 'value' and
the call returns TIXML_SUCCESS. If it is not
an integer, it returns TIXML_WRONG_TYPE. If the attribute
does not exist, then TIXML_NO_ATTRIBUTE is returned.
*/
int QueryIntAttribute( const char* name, int* _value ) const;
/// QueryUnsignedAttribute examines the attribute - see QueryIntAttribute().
int QueryUnsignedAttribute( const char* name, unsigned* _value ) const;
/** QueryBoolAttribute examines the attribute - see QueryIntAttribute().
Note that '1', 'true', or 'yes' are considered true, while '0', 'false'
and 'no' are considered false.
*/
int QueryBoolAttribute( const char* name, bool* _value ) const;
/// QueryDoubleAttribute examines the attribute - see QueryIntAttribute().
int QueryDoubleAttribute( const char* name, double* _value ) const;
/// QueryFloatAttribute examines the attribute - see QueryIntAttribute().
int QueryFloatAttribute( const char* name, float* _value ) const {
double d;
int result = QueryDoubleAttribute( name, &d );