| 一、实验目的及要求 1、掌握结构型模式的概念。 2、掌握适配器模式、桥接模式、组合模式、装饰器模式、外观模式、享元模式、代理模式的构造方式及使用情景。 二、实验设备（环境） 1、 软件需求: Dev-Cpp5.4, Rational Rose / Microsoft Visio 2、 硬件需求: Pentium III 450以上的CPU处理器，1G以上的内存，2G的自由硬盘空间 三、实验内容 1、操作系统中的目录结构是一个树形结构，因此在对文件(File)和文件夹(Folder)进行操作时可以应用组合模式。对于文件夹的操作，将递归处理文件夹中的每一个子文件夹和文件。利用组合模式设计并实现某一指定文件夹下所有文件的属性（如文件名）的读取。 2、桥接模式将抽象部分与它的实现部分分离，将两个角色之间的继承关系改为关联关系。利用桥接模式设计并实现步骤1中文件的属性（如文件名）的多种输出方式：文本输出(TextExport)、数据库输出(DbExport)、XML输出(XmlExport)。 3、为了提高开发效率，现需要重用已有的XML文件操作接口（API），这些操作封装在一些由第三方提供的类中。使用适配器模式设计并实现步骤2中XML输出模块，实现在不修改现有类的基础上重用第三方XML文件操作接口。 四、实验步骤与结果 练习一 1.组合模式设计结构图: 
2.实验结果截图: 
3.代码分析: Component.cpp #include "Component.h"
Component::Component()
{
}
Component::~Component()
{
}
void Component::Add(const Component& com)
{
}
Component* Component::GetChild(int index)
{
return 0;
}
void Component::Remove(const Component& com)
{
}
Component.h #ifndef _COMPONENT_H_
#define _COMPONENT_H_
#include
using namespace std;
class Component
{
public:
Component();
virtual ~Component();
public:
virtual void Operation(string path) = 0;
virtual void Add(const Component&);
virtual void Remove(const Component&);
virtual Component* GetChild(int);
protected:
private:
};
#endif //~_COMPONENT_H_
Composite.cpp #include "Composite.h"
#include "Component.h"
#include "Leaf.h"
#include
#include
#include
#include
#include
Composite::Composite()
{
}
Composite::~Composite()
{
}
void Composite::Operation(string path)
{
vector files;
long hFile = 0;
struct _finddata_t fileinfo;
string p;
if ((hFile = _findfirst(p.assign(path).append("\\*").c_str(), &fileinfo)) != -1) {
do {
if ((fileinfo.attrib & _A_SUBDIR)) {
if (strcmp(fileinfo.name, ".") != 0 && strcmp(fileinfo.name, "..") != 0) {
files.push_back(p.assign(path).append("\\").append(fileinfo.name));
Operation(p.assign(path).append("\\").append(fileinfo.name));
}
}
else {
Leaf f;
f.Operation(p.assign(path).append("\\").append(fileinfo.name));
}
} while (_findnext(hFile, &fileinfo) == 0);
_findclose(hFile);
}
}
void Composite::Add(Component* com)
{
comVec.push_back(com);
}
void Composite::Remove(Component* com)
{
vector::iterator comIter;
for (comIter = comVec.begin(); comIter != comVec.end(); comIter++)
if ((*comIter) == com) comVec.erase(comIter);
}
Component* Composite::GetChild(int index)
{
return comVec[index];
}
Composite.h #ifndef _COMPOSITE_H_
#define _COMPOSITE_H_
#include "Component.h"
#include
using namespace std;
class Composite :public Component
{
public:
Composite();
~Composite();
public:
void Operation(string path);
void Add(Component* com);
void Remove(Component* com);
Component* GetChild(int index);
protected:
private:
vector comVec;
};
#endif //~_COMPOSITE_H_
Leaf.cpp #include "Leaf.h"
#include
#include
#include
using namespace std;
Leaf::Leaf()
{
}
Leaf::~Leaf()
{
}
void Leaf::Operation(string path)
{
cout << path << endl;
}
Leaf.h #pragma once
#ifndef _LEAF_H_
#define _LEAF_H_
#include "Component.h"
class Leaf :public Component
{
public:
Leaf();
~Leaf();
void Operation(string path);
protected:
private:
};
#endif //~_LEAF_H_
main.cpp #include "Component.h"
#include "Composite.h"
#include "Leaf.h"
#include
#include
#include
#include
#include
#include
using namespace std;
int main(int argc, char* argv[])
{
Composite *com = new Composite();
string path = "D:\\设计模式课程";
com->Operation(path);
// system("pause");//
return 0;
}
练习二 1.桥接模式设计结构图UML图: 
2.实验结果: 
3.代码分析 Composite.h #ifndef _COMPOSITE_H_
#define _COMPOSITE_H_
#include "Component.h"
#include
using namespace std;
class Composite :public Component
{
public:
Composite();
~Composite();
public:
void Operation(string path,vector &str);
void Add(Component* com);
void Remove(Component* com);
Component* GetChild(int index);
protected:
private:
vector comVec;
};
#endif //~_COMPOSITE_H_
Composite.cpp #include "Composite.h"
#include "Component.h"
#include "Leaf.h"
#include
#include
#include
#include
#include
//#define NULL 0 //define NULL POINTOR
Composite::Composite()
{
//vector::iterator itend = comVec.begin();
}
Composite::~Composite()
{
}
void Composite::Operation(string path,vector &str)
{
str.push_back(path);
vector files;
//文件句柄
long hFile = 0;
//文件信息
struct _finddata_t fileinfo; //很少用的文件信息读取结构
string p; //string类很有意思的一个赋值函数:assign()，有很多重载版本
if ((hFile = _findfirst(p.assign(path).append("\\*").c_str(), &fileinfo)) != -1) {
do {
if ((fileinfo.attrib & _A_SUBDIR)) { //比较文件类型是否是文件夹
if (strcmp(fileinfo.name, ".") != 0 && strcmp(fileinfo.name, "..") != 0) {
files.push_back(p.assign(path).append("\\").append(fileinfo.name));
Operation(p.assign(path).append("\\").append(fileinfo.name),str);
}
}
else {
Leaf f;
f.Operation(p.assign(path).append("\\").append(fileinfo.name),str);
}
} while (_findnext(hFile, &fileinfo) == 0); //寻找下一个，成功返回0，否则-1
_findclose(hFile);
}
}
void Composite::Add(Component* com)
{
comVec.push_back(com);
}
void Composite::Remove(Component* com)
{
vector::iterator comIter;
for (comIter = comVec.begin(); comIter != comVec.end(); comIter++)
if ((*comIter) == com) comVec.erase(comIter);
}
Component* Composite::GetChild(int index)
{
return comVec[index];
}
Component.h #ifndef _COMPONENT_H_
#define _COMPONENT_H_
#include
#include
using namespace std;
class Component
{
public:
Component();
virtual ~Component();
public:
virtual void Operation(string path,vector &str) = 0;
virtual void Add(const Component&);
virtual void Remove(const Component&);
virtual Component* GetChild(int);
protected:
private:
};
#endif //~_COMPONENT_H_
Component.cpp #include "Component.h"
Component::Component()
{
}
Component::~Component()
{
}
void Component::Add(const Component& com)
{
}
Component* Component::GetChild(int index)
{
return 0;
}
void Component::Remove(const Component& com)
{
}
Leaf.h #pragma once
#ifndef _LEAF_H_
#define _LEAF_H_
#include "Component.h"
class Leaf :public Component
{
public:
Leaf();
~Leaf();
void Operation(string path,vector &str);
protected:
private:
};
#endif //~_LEAF_H_
Leaf.cpp #include "Leaf.h"
#include
#include
#include
using namespace std;
Leaf::Leaf()
{
}
Leaf::~Leaf()
{
}
void Leaf::Operation(string path,vector &str)
{
str.push_back(path);
}
EXport.cpp #include "Export.h"
#include "ExportImp.h"
#include
using namespace std;
Export::Export()
{
}
Export::~Export()
{
}
TextExport::TextExport(TextExportImp * imp)
{
_imp = imp;
}
TextExport::~TextExport()
{
}
void TextExport::Operation(vector str)
{
_imp->Operation(str);
}
DbExport::DbExport(DbExportImp * imp)
{
_imp = imp;
}
DbExport::~DbExport()
{
}
void DbExport::Operation(vector str)
{
_imp->Operation(str);
}
XmlExport::XmlExport(XmlExportImp * imp)
{
_imp = imp;
}
XmlExport::~XmlExport()
{
}
void XmlExport::Operation(vector str)
{
_imp->Operation(str);
}
EXport.h #ifndef _EXPORT_H
#define _EXPORT_H
#include
#include
#include "ExportImp.h"
using namespace std;
class ExportImp;
class Export
{
public:
virtual ~Export();
virtual void Operation(vector str) = 0;
protected:
Export();
private:
};
class TextExport :public Export
{
public:
TextExport(TextExportImp* imp);
~TextExport();
void Operation(vector str);
protected:
private:
ExportImp * _imp;
};
class DbExport :public Export
{
public:
DbExport(DbExportImp* imp);
~DbExport();
void Operation(vector str);
protected:
private:
DbExportImp * _imp;
};
class XmlExport :public Export
{
public:
XmlExport(XmlExportImp* imp);
~XmlExport();
void Operation(vector str);
protected:
private:
XmlExportImp * _imp;
};
#endif //~_ABSTRACTION_H_
ExportImp.cpp #include "ExportImp.h"
#include
#include
#include
#include "tinyxml2.h"
using namespace std;
using namespace tinyxml2;
ExportImp::ExportImp()
{
}
ExportImp::~ExportImp()
{
}
TextExportImp::TextExportImp()
{
}
TextExportImp::~TextExportImp()
{
}
void TextExportImp::Operation(vector str)
{
ofstream out("out.txt");
for (int i = 0; i < str.size(); i++)
{
out << str[i] << endl;
}
}
DbExportImp::DbExportImp()
{
}
DbExportImp::~DbExportImp()
{
}
void DbExportImp::Operation(vector str)
{
cout << "目录" << endl;
for (int a = 0; a < str.size(); a++)
{
cout << str[a] << endl;
}
}
XmlExportImp::XmlExportImp()
{
}
XmlExportImp::~XmlExportImp()
{
}
void XmlExportImp::Operation(vector str)
{
XMLDocument *doc = new XMLDocument();
XMLDeclaration *pDel = doc->NewDeclaration("xml version=\"1.0\" encoding=\"UTF-8\"");
XMLElement* root = doc->NewElement(str[0].c_str());
doc->InsertEndChild(root);
for (int a = 0; a < str.size(); a++)
{
XMLElement * location = doc->NewElement("地址");
root->InsertEndChild(location);
XMLText *text = doc->NewText(str[a].c_str());
location->InsertEndChild(text);
}
doc->SaveFile("XMLFile.xml");
}
ExportImp.h #ifndef _EXPORTIMP_h_
#define _EXPORTIMP_h_
#include
#include
using namespace std;
class ExportImp
{
public:
virtual ~ExportImp();
virtual void Operation(vector str) = 0;
protected:
ExportImp();
private:
};
class TextExportImp :public ExportImp
{
public:
TextExportImp();
~TextExportImp();
virtual void Operation(vector str);
protected:
private:
};
class DbExportImp :public ExportImp
{
public:
DbExportImp();
~DbExportImp();
virtual void Operation(vector str);
protected:
private:
};
class XmlExportImp :public ExportImp
{
public:
XmlExportImp();
~XmlExportImp();
virtual void Operation(vector str);
protected:
private:
};
#endif //~_ABSTRACTIONIMP_H_
resource.h //{{NO_DEPENDENCIES}}
// Microsoft Visual C++ 生成的包含文件。
// 供 桥接模式.rc 使用
//
#define IDR_ACCELERATOR1 101
// Next default values for new objects
//
#ifdef APSTUDIO_INVOKED
#ifndef APSTUDIO_READONLY_SYMBOLS
#define _APS_NEXT_RESOURCE_VALUE 102
#define _APS_NEXT_COMMAND_VALUE 40002
#define _APS_NEXT_CONTROL_VALUE 1001
#define _APS_NEXT_SYMED_VALUE 101
#endif
#endif
tinyxml2.h /*
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 TINYXML2_INCLUDED
#define TINYXML2_INCLUDED
#if defined(ANDROID_NDK) || defined(__BORLANDC__) || defined(__QNXNTO__)
# include
# include
# include
# include
# include
# if defined(__PS3__)
# include
# endif
#else
# include
# include
# include
# include
# include
#endif
#include
/*
TODO: intern strings instead of allocation.
*/
/*
gcc:
g++ -Wall -DTINYXML2_DEBUG tinyxml2.cpp xmltest.cpp -o gccxmltest.exe
Formatting, Artistic Style:
AStyle.exe --style=1tbs --indent-switches --break-closing-brackets --indent-preprocessor tinyxml2.cpp tinyxml2.h
*/
#if defined( _DEBUG ) || defined (__DEBUG__)
# ifndef TINYXML2_DEBUG
# define TINYXML2_DEBUG
# endif
#endif
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable: 4251)
#endif
#ifdef _WIN32
# ifdef TINYXML2_EXPORT
# define TINYXML2_LIB __declspec(dllexport)
# elif defined(TINYXML2_IMPORT)
# define TINYXML2_LIB __declspec(dllimport)
# else
# define TINYXML2_LIB
# endif
#elif __GNUC__ >= 4
# define TINYXML2_LIB __attribute__((visibility("default")))
#else
# define TINYXML2_LIB
#endif
#if defined(TINYXML2_DEBUG)
# if defined(_MSC_VER)
# // "(void)0," is for suppressing C4127 warning in "assert(false)", "assert(true)" and the like
# define TIXMLASSERT( x ) if ( !((void)0,(x))) { __debugbreak(); }
# elif defined (ANDROID_NDK)
# include
# define TIXMLASSERT( x ) if ( !(x)) { __android_log_assert( "assert", "grinliz", "ASSERT in '%s' at %d.", __FILE__, __LINE__ ); }
# else
# include
# define TIXMLASSERT assert
# endif
#else
# define TIXMLASSERT( x ) {}
#endif
/* Versioning, past 1.0.14:
http://semver.org/
*/
static const int TIXML2_MAJOR_VERSION = 6;
static const int TIXML2_MINOR_VERSION = 2;
static const int TIXML2_PATCH_VERSION = 0;
#define TINYXML2_MAJOR_VERSION 6
#define TINYXML2_MINOR_VERSION 2
#define TINYXML2_PATCH_VERSION 0
// A fixed element depth limit is problematic. There needs to be a
// limit to avoid a stack overflow. However, that limit varies per
// system, and the capacity of the stack. On the other hand, it's a trivial
// attack that can result from ill, malicious, or even correctly formed XML,
// so there needs to be a limit in place.
static const int TINYXML2_MAX_ELEMENT_DEPTH = 100;
namespace tinyxml2
{
class XMLDocument;
class XMLElement;
class XMLAttribute;
class XMLComment;
class XMLText;
class XMLDeclaration;
class XMLUnknown;
class XMLPrinter;
/*
A class that wraps strings. Normally stores the start and end
pointers into the XML file itself, and will apply normalization
and entity translation if actually read. Can also store (and memory
manage) a traditional char[]
*/
class StrPair
{
public:
enum {
NEEDS_ENTITY_PROCESSING = 0x01,
NEEDS_NEWLINE_NORMALIZATION = 0x02,
NEEDS_WHITESPACE_COLLAPSING = 0x04,
TEXT_ELEMENT = NEEDS_ENTITY_PROCESSING | NEEDS_NEWLINE_NORMALIZATION,
TEXT_ELEMENT_LEAVE_ENTITIES = NEEDS_NEWLINE_NORMALIZATION,
ATTRIBUTE_NAME = 0,
ATTRIBUTE_VALUE = NEEDS_ENTITY_PROCESSING | NEEDS_NEWLINE_NORMALIZATION,
ATTRIBUTE_VALUE_LEAVE_ENTITIES = NEEDS_NEWLINE_NORMALIZATION,
COMMENT = NEEDS_NEWLINE_NORMALIZATION
};
StrPair() : _flags( 0 ), _start( 0 ), _end( 0 ) {}
~StrPair();
void Set( char* start, char* end, int flags ) {
TIXMLASSERT( start );
TIXMLASSERT( end );
Reset();
_start = start;
_end = end;
_flags = flags | NEEDS_FLUSH;
}
const char* GetStr();
bool Empty() const {
return _start == _end;
}
void SetInternedStr( const char* str ) {
Reset();
_start = const_cast(str);
}
void SetStr( const char* str, int flags=0 );
char* ParseText( char* in, const char* endTag, int strFlags, int* curLineNumPtr );
char* ParseName( char* in );
void TransferTo( StrPair* other );
void Reset();
private:
void CollapseWhitespace();
enum {
NEEDS_FLUSH = 0x100,
NEEDS_DELETE = 0x200
};
int _flags;
char* _start;
char* _end;
StrPair( const StrPair& other ); // not supported
void operator=( StrPair& other ); // not supported, use TransferTo()
};
/*
A dynamic array of Plain Old Data. Doesn't support constructors, etc.
Has a small initial memory pool, so that low or no usage will not
cause a call to new/delete
*/
template
class DynArray
{
public:
DynArray() :
_mem( _pool ),
_allocated( INITIAL_SIZE ),
_size( 0 )
{
}
~DynArray() {
if ( _mem != _pool ) {
delete [] _mem;
}
}
void Clear() {
_size = 0;
}
void Push( T t ) {
TIXMLASSERT( _size < INT_MAX );
EnsureCapacity( _size+1 );
_mem[_size] = t;
++_size;
}
T* PushArr( int count ) {
TIXMLASSERT( count >= 0 );
TIXMLASSERT( _size <= INT_MAX - count );
EnsureCapacity( _size+count );
T* ret = &_mem[_size];
_size += count;
return ret;
}
T Pop() {
TIXMLASSERT( _size > 0 );
--_size;
return _mem[_size];
}
void PopArr( int count ) {
TIXMLASSERT( _size >= count );
_size -= count;
}
bool Empty() const {
return _size == 0;
}
T& operator[](int i) {
TIXMLASSERT( i>= 0 && i < _size );
return _mem[i];
}
const T& operator[](int i) const {
TIXMLASSERT( i>= 0 && i < _size );
return _mem[i];
}
const T& PeekTop() const {
TIXMLASSERT( _size > 0 );
return _mem[ _size - 1];
}
int Size() const {
TIXMLASSERT( _size >= 0 );
return _size;
}
int Capacity() const {
TIXMLASSERT( _allocated >= INITIAL_SIZE );
return _allocated;
}
void SwapRemove(int i) {
TIXMLASSERT(i >= 0 && i < _size);
TIXMLASSERT(_size > 0);
_mem[i] = _mem[_size - 1];
--_size;
}
const T* Mem() const {
TIXMLASSERT( _mem );
return _mem;
}
T* Mem() {
TIXMLASSERT( _mem );
return _mem;
}
private:
DynArray( const DynArray& ); // not supported
void operator=( const DynArray& ); // not supported
void EnsureCapacity( int cap ) {
TIXMLASSERT( cap > 0 );
if ( cap > _allocated ) {
TIXMLASSERT( cap <= INT_MAX / 2 );
int newAllocated = cap * 2;
T* newMem = new T[newAllocated];
TIXMLASSERT( newAllocated >= _size );
memcpy( newMem, _mem, sizeof(T)*_size ); // warning: not using constructors, only works for PODs
if ( _mem != _pool ) {
delete [] _mem;
}
_mem = newMem;
_allocated = newAllocated;
}
}
T* _mem;
T _pool[INITIAL_SIZE];
int _allocated; // objects allocated
int _size; // number objects in use
};
/*
Parent virtual class of a pool for fast allocation
and deallocation of objects.
*/
class MemPool
{
public:
MemPool() {}
virtual ~MemPool() {}
virtual int ItemSize() const = 0;
virtual void* Alloc() = 0;
virtual void Free( void* ) = 0;
virtual void SetTracked() = 0;
virtual void Clear() = 0;
};
/*
Template child class to create pools of the correct type.
*/
template< int ITEM_SIZE >
class MemPoolT : public MemPool
{
public:
MemPoolT() : _blockPtrs(), _root(0), _currentAllocs(0), _nAllocs(0), _maxAllocs(0), _nUntracked(0) {}
~MemPoolT() {
Clear();
}
void Clear() {
// Delete the blocks.
while( !_blockPtrs.Empty()) {
Block* lastBlock = _blockPtrs.Pop();
delete lastBlock;
}
_root = 0;
_currentAllocs = 0;
_nAllocs = 0;
_maxAllocs = 0;
_nUntracked = 0;
}
virtual int ItemSize() const {
return ITEM_SIZE;
}
int CurrentAllocs() const {
return _currentAllocs;
}
virtual void* Alloc() {
if ( !_root ) {
// Need a new block.
Block* block = new Block();
_blockPtrs.Push( block );
Item* blockItems = block->items;
for( int i = 0; i < ITEMS_PER_BLOCK - 1; ++i ) {
blockItems[i].next = &(blockItems[i + 1]);
}
blockItems[ITEMS_PER_BLOCK - 1].next = 0;
_root = blockItems;
}
Item* const result = _root;
TIXMLASSERT( result != 0 );
_root = _root->next;
++_currentAllocs;
if ( _currentAllocs > _maxAllocs ) {
_maxAllocs = _currentAllocs;
}
++_nAllocs;
++_nUntracked;
return result;
}
virtual void Free( void* mem ) {
if ( !mem ) {
return;
}
--_currentAllocs;
Item* item = static_cast( mem );
#ifdef TINYXML2_DEBUG
memset( item, 0xfe, sizeof( *item ) );
#endif
item->next = _root;
_root = item;
}
void Trace( const char* name ) {
printf( "Mempool %s watermark=%d [%dk] current=%d size=%d nAlloc=%d blocks=%d\n",
name, _maxAllocs, _maxAllocs * ITEM_SIZE / 1024, _currentAllocs,
ITEM_SIZE, _nAllocs, _blockPtrs.Size() );
}
void SetTracked() {
--_nUntracked;
}
int Untracked() const {
return _nUntracked;
}
// This number is perf sensitive. 4k seems like a good tradeoff on my machine.
// The test file is large, 170k.
// Release: VS2010 gcc(no opt)
// 1k: 4000
// 2k: 4000
// 4k: 3900 21000
// 16k: 5200
// 32k: 4300
// 64k: 4000 21000
// Declared public because some compilers do not accept to use ITEMS_PER_BLOCK
// in private part if ITEMS_PER_BLOCK is private
enum { ITEMS_PER_BLOCK = (4 * 1024) / ITEM_SIZE };
private:
MemPoolT( const MemPoolT& ); // not supported
void operator=( const MemPoolT& ); // not supported
union Item {
Item* next;
char itemData[ITEM_SIZE];
};
struct Block {
Item items[ITEMS_PER_BLOCK];
};
DynArray< Block*, 10 > _blockPtrs;
Item* _root;
int _currentAllocs;
int _nAllocs;
int _maxAllocs;
int _nUntracked;
};
/**
Implements the interface to the "Visitor pattern" (see the Accept() method.)
If you call the Accept() method, it requires being passed a XMLVisitor
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 leafs
are simply called with Visit().
If you return 'true' from a Visit method, recursive parsing will continue. If you return
false, no children of this node or its siblings 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 XMLDocument, although all nodes support visiting.
You should never change the document from a callback.
@sa XMLNode::Accept()
*/
class TINYXML2_LIB XMLVisitor
{
public:
virtual ~XMLVisitor() {}
/// Visit a document.
virtual bool VisitEnter( const XMLDocument& /*doc*/ ) {
return true;
}
/// Visit a document.
virtual bool VisitExit( const XMLDocument& /*doc*/ ) {
return true;
}
/// Visit an element.
virtual bool VisitEnter( const XMLElement& /*element*/, const XMLAttribute* /*firstAttribute*/ ) {
return true;
}
/// Visit an element.
virtual bool VisitExit( const XMLElement& /*element*/ ) {
return true;
}
/// Visit a declaration.
virtual bool Visit( const XMLDeclaration& /*declaration*/ ) {
return true;
}
/// Visit a text node.
virtual bool Visit( const XMLText& /*text*/ ) {
return true;
}
/// Visit a comment node.
virtual bool Visit( const XMLComment& /*comment*/ ) {
return true;
}
/// Visit an unknown node.
virtual bool Visit( const XMLUnknown& /*unknown*/ ) {
return true;
}
};
// WARNING: must match XMLDocument::_errorNames[]
enum XMLError {
XML_SUCCESS = 0,
XML_NO_ATTRIBUTE,
XML_WRONG_ATTRIBUTE_TYPE,
XML_ERROR_FILE_NOT_FOUND,
XML_ERROR_FILE_COULD_NOT_BE_OPENED,
XML_ERROR_FILE_READ_ERROR,
UNUSED_XML_ERROR_ELEMENT_MISMATCH, // remove at next major version
XML_ERROR_PARSING_ELEMENT,
XML_ERROR_PARSING_ATTRIBUTE,
UNUSED_XML_ERROR_IDENTIFYING_TAG, // remove at next major version
XML_ERROR_PARSING_TEXT,
XML_ERROR_PARSING_CDATA,
XML_ERROR_PARSING_COMMENT,
XML_ERROR_PARSING_DECLARATION,
XML_ERROR_PARSING_UNKNOWN,
XML_ERROR_EMPTY_DOCUMENT,
XML_ERROR_MISMATCHED_ELEMENT,
XML_ERROR_PARSING,
XML_CAN_NOT_CONVERT_TEXT,
XML_NO_TEXT_NODE,
XML_ELEMENT_DEPTH_EXCEEDED,
XML_ERROR_COUNT
};
/*
Utility functionality.
*/
class TINYXML2_LIB XMLUtil
{
public:
static const char* SkipWhiteSpace( const char* p, int* curLineNumPtr ) {
TIXMLASSERT( p );
while( IsWhiteSpace(*p) ) {
if (curLineNumPtr && *p == '\n') {
++(*curLineNumPtr);
}
++p;
}
TIXMLASSERT( p );
return p;
}
static char* SkipWhiteSpace( char* p, int* curLineNumPtr ) {
return const_cast( SkipWhiteSpace( const_cast(p), curLineNumPtr ) );
}
// Anything in the high order range of UTF-8 is assumed to not be whitespace. This isn't
// correct, but simple, and usually works.
static bool IsWhiteSpace( char p ) {
return !IsUTF8Continuation(p) && isspace( static_cast(p) );
}
inline static bool IsNameStartChar( unsigned char ch ) {
if ( ch >= 128 ) {
// This is a heuristic guess in attempt to not implement Unicode-aware isalpha()
return true;
}
if ( isalpha( ch ) ) {
return true;
}
return ch == ':' || ch == '_';
}
inline static bool IsNameChar( unsigned char ch ) {
return IsNameStartChar( ch )
|| isdigit( ch )
|| ch == '.'
|| ch == '-';
}
inline static bool StringEqual( const char* p, const char* q, int nChar=INT_MAX ) {
if ( p == q ) {
return true;
}
TIXMLASSERT( p );
TIXMLASSERT( q );
TIXMLASSERT( nChar >= 0 );
return strncmp( p, q, nChar ) == 0;
}
inline static bool IsUTF8Continuation( char p ) {
return ( p & 0x80 ) != 0;
}
static const char* ReadBOM( const char* p, bool* hasBOM );
// p is the starting location,
// the UTF-8 value of the entity will be placed in value, and length filled in.
static const char* GetCharacterRef( const char* p, char* value, int* length );
static void ConvertUTF32ToUTF8( unsigned long input, char* output, int* length );
// converts primitive types to strings
static void ToStr( int v, char* buffer, int bufferSize );
static void ToStr( unsigned v, char* buffer, int bufferSize );
static void ToStr( bool v, char* buffer, int bufferSize );
static void ToStr( float v, char* buffer, int bufferSize );
static void ToStr( double v, char* buffer, int bufferSize );
static void ToStr(int64_t v, char* buffer, int bufferSize);
// converts strings to primitive types
static bool ToInt( const char* str, int* value );
static bool ToUnsigned( const char* str, unsigned* value );
static bool ToBool( const char* str, bool* value );
static bool ToFloat( const char* str, float* value );
static bool ToDouble( const char* str, double* value );
static bool ToInt64(const char* str, int64_t* value);
// Changes what is serialized for a boolean value.
// Default to "true" and "false". Shouldn't be changed
// unless you have a special testing or compatibility need.
// Be careful: static, global, & not thread safe.
// Be sure to set static const memory as parameters.
static void SetBoolSerialization(const char* writeTrue, const char* writeFalse);
private:
static const char* writeBoolTrue;
static const char* writeBoolFalse;
};
/** XMLNode is a base class for every object that is in the
XML Document Object Model (DOM), except XMLAttributes.
Nodes have siblings, a parent, and children which can
be navigated. A node is always in a XMLDocument.
The type of a XMLNode can be queried, and it can
be cast to its more defined type.
A XMLDocument allocates memory for all its Nodes.
When the XMLDocument gets deleted, all its Nodes
will also be deleted.
@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)
@endverbatim
*/
class TINYXML2_LIB XMLNode
{
friend class XMLDocument;
friend class XMLElement;
public:
/// Get the XMLDocument that owns this XMLNode.
const XMLDocument* GetDocument() const {
TIXMLASSERT( _document );
return _document;
}
/// Get the XMLDocument that owns this XMLNode.
XMLDocument* GetDocument() {
TIXMLASSERT( _document );
return _document;
}
/// Safely cast to an Element, or null.
virtual XMLElement* ToElement() {
return 0;
}
/// Safely cast to Text, or null.
virtual XMLText* ToText() {
return 0;
}
/// Safely cast to a Comment, or null.
virtual XMLComment* ToComment() {
return 0;
}
/// Safely cast to a Document, or null.
virtual XMLDocument* ToDocument() {
return 0;
}
/// Safely cast to a Declaration, or null.
virtual XMLDeclaration* ToDeclaration() {
return 0;
}
/// Safely cast to an Unknown, or null.
virtual XMLUnknown* ToUnknown() {
return 0;
}
virtual const XMLElement* ToElement() const {
return 0;
}
virtual const XMLText* ToText() const {
return 0;
}
virtual const XMLComment* ToComment() const {
return 0;
}
virtual const XMLDocument* ToDocument() const {
return 0;
}
virtual const XMLDeclaration* ToDeclaration() const {
return 0;
}
virtual const XMLUnknown* ToUnknown() const {
return 0;
}
/** The meaning of 'value' changes for the specific type.
@verbatim
Document: empty (NULL is returned, not an empty string)
Element: name of the element
Comment: the comment text
Unknown: the tag contents
Text: the text string
@endverbatim
*/
const char* Value() const;
/** Set the Value of an XML node.
@sa Value()
*/
void SetValue( const char* val, bool staticMem=false );
/// Gets the line number the node is in, if the document was parsed from a file.
int GetLineNum() const { return _parseLineNum; }
/// Get the parent of this node on the DOM.
const XMLNode* Parent() const {
return _parent;
}
XMLNode* Parent() {
return _parent;
}
/// Returns true if this node has no children.
bool NoChildren() const {
return !_firstChild;
}
/// Get the first child node, or null if none exists.
const XMLNode* FirstChild() const {
return _firstChild;
}
XMLNode* FirstChild() {
return _firstChild;
}
/** Get the first child element, or optionally the first child
element with the specified name.
*/
const XMLElement* FirstChildElement( const char* name = 0 ) const;
XMLElement* FirstChildElement( const char* name = 0 ) {
return const_cast(const_cast(this)->FirstChildElement( name ));
}
/// Get the last child node, or null if none exists.
const XMLNode* LastChild() const {
return _lastChild;
}
XMLNode* LastChild() {
return _lastChild;
}
/** Get the last child element or optionally the last child
element with the specified name.
*/
const XMLElement* LastChildElement( const char* name = 0 ) const;
XMLElement* LastChildElement( const char* name = 0 ) {
return const_cast(const_cast(this)->LastChildElement(name) );
}
/// Get the previous (left) sibling node of this node.
const XMLNode* PreviousSibling() const {
return _prev;
}
XMLNode* PreviousSibling() {
return _prev;
}
/// Get the previous (left) sibling element of this node, with an optionally supplied name.
const XMLElement* PreviousSiblingElement( const char* name = 0 ) const ;
XMLElement* PreviousSiblingElement( const char* name = 0 ) {
return const_cast(const_cast(this)->PreviousSiblingElement( name ) );
}
/// Get the next (right) sibling node of this node.
const XMLNode* NextSibling() const {
return _next;
}
XMLNode* NextSibling() {
return _next;
}
/// Get the next (right) sibling element of this node, with an optionally supplied name.
const XMLElement* NextSiblingElement( const char* name = 0 ) const;
XMLElement* NextSiblingElement( const char* name = 0 ) {
return const_cast(const_cast(this)->NextSiblingElement( name ) );
}
/**
Add a child node as the last (right) child.
If the child node is already part of the document,
it is moved from its old location to the new location.
Returns the addThis argument or 0 if the node does not
belong to the same document.
*/
XMLNode* InsertEndChild( XMLNode* addThis );
XMLNode* LinkEndChild( XMLNode* addThis ) {
return InsertEndChild( addThis );
}
/**
Add a child node as the first (left) child.
If the child node is already part of the document,
it is moved from its old location to the new location.
Returns the addThis argument or 0 if the node does not
belong to the same document.
*/
XMLNode* InsertFirstChild( XMLNode* addThis );
/**
Add a node after the specified child node.
If the child node is already part of the document,
it is moved from its old location to the new location.
Returns the addThis argument or 0 if the afterThis node
is not a child of this node, or if the node does not
belong to the same document.
*/
XMLNode* InsertAfterChild( XMLNode* afterThis, XMLNode* addThis );
/**
Delete all the children of this node.
*/
void DeleteChildren();
/**
Delete a child of this node.
*/
void DeleteChild( XMLNode* node );
/**
Make a copy of this node, but not its children.
You may pass in a Document pointer that will be
the owner of the new Node. If the 'document' is
null, then the node returned will be allocated
from the current Document. (this->GetDocument())
Note: if called on a XMLDocument, this will return null.
*/
virtual XMLNode* ShallowClone( XMLDocument* document ) const = 0;
/**
Make a copy of this node and all its children.
If the 'target' is null, then the nodes will
be allocated in the current document. If 'target'
is specified, the memory will be allocated is the
specified XMLDocument.
NOTE: This is probably not the correct tool to
copy a document, since XMLDocuments can have multiple
top level XMLNodes. You probably want to use
XMLDocument::DeepCopy()
*/
XMLNode* DeepClone( XMLDocument* target ) const;
/**
Test if 2 nodes are the same, but don't test children.
The 2 nodes do not need to be in the same Document.
Note: if called on a XMLDocument, this will return false.
*/
virtual bool ShallowEqual( const XMLNode* compare ) const = 0;
/** Accept a hierarchical visit of the nodes in the TinyXML-2 DOM. Every node in the
XML tree will be conditionally visited and the host will be called back
via the XMLVisitor interface.
This is essentially a SAX interface for TinyXML-2. (Note however it doesn't re-parse
the XML for the callbacks, so the performance of TinyXML-2 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
XMLPrinter printer;
tinyxmlDoc.Accept( &printer );
const char* xmlcstr = printer.CStr();
@endverbatim
*/
virtual bool Accept( XMLVisitor* visitor ) const = 0;
/**
Set user data into the XMLNode. TinyXML-2 in
no way processes or interprets user data.
It is initially 0.
*/
void SetUserData(void* userData) { _userData = userData; }
/**
Get user data set into the XMLNode. TinyXML-2 in
no way processes or interprets user data.
It is initially 0.
*/
void* GetUserData() const { return _userData; }
protected:
XMLNode( XMLDocument* );
virtual ~XMLNode();
virtual char* ParseDeep( char* p, StrPair* parentEndTag, int* curLineNumPtr);
XMLDocument* _document;
XMLNode* _parent;
mutable StrPair _value;
int _parseLineNum;
XMLNode* _firstChild;
XMLNode* _lastChild;
XMLNode* _prev;
XMLNode* _next;
void* _userData;
private:
MemPool* _memPool;
void Unlink( XMLNode* child );
static void DeleteNode( XMLNode* node );
void InsertChildPreamble( XMLNode* insertThis ) const;
const XMLElement* ToElementWithName( const char* name ) const;
XMLNode( const XMLNode& ); // not supported
XMLNode& operator=( const XMLNode& ); // not supported
};
/** XML text.
Note that a text node can have child element nodes, for example:
@verbatim
This is bold
@endverbatim
A text node can have 2 ways to output the next. "normal" output
and CDATA. It will default to the mode it was parsed from the XML file and
you generally want to leave it alone, but you can change the output mode with
SetCData() and query it with CData().
*/
class TINYXML2_LIB XMLText : public XMLNode
{
friend class XMLDocument;
public:
virtual bool Accept( XMLVisitor* visitor ) const;
virtual XMLText* ToText() {
return this;
}
virtual const XMLText* ToText() const {
return this;
}
/// Declare whether this should be CDATA or standard text.
void SetCData( bool isCData ) {
_isCData = isCData;
}
/// Returns true if this is a CDATA text element.
bool CData() const {
return _isCData;
}
virtual XMLNode* ShallowClone( XMLDocument* document ) const;
virtual bool ShallowEqual( const XMLNode* compare ) const;
protected:
XMLText( XMLDocument* doc ) : XMLNode( doc ), _isCData( false ) {}
virtual ~XMLText() {}
char* ParseDeep( char* p, StrPair* parentEndTag, int* curLineNumPtr );
private:
bool _isCData;
XMLText( const XMLText& ); // not supported
XMLText& operator=( const XMLText& ); // not supported
};
/** An XML Comment. */
class TINYXML2_LIB XMLComment : public XMLNode
{
friend class XMLDocument;
public:
virtual XMLComment* ToComment() {
return this;
}
virtual const XMLComment* ToComment() const {
return this;
}
virtual bool Accept( XMLVisitor* visitor ) const;
virtual XMLNode* ShallowClone( XMLDocument* document ) const;
virtual bool ShallowEqual( const XMLNode* compare ) const;
protected:
XMLComment( XMLDocument* doc );
virtual ~XMLComment();
char* ParseDeep( char* p, StrPair* parentEndTag, int* curLineNumPtr);
private:
XMLComment( const XMLComment& ); // not supported
XMLComment& operator=( const XMLComment& ); // not supported
};
/** In correct XML the declaration is the first entry in the file.
@verbatim
@endverbatim
TinyXML-2 will happily read or write files without a declaration,
however.
The text of the declaration isn't interpreted. It is parsed
and written as a string.
*/
class TINYXML2_LIB XMLDeclaration : public XMLNode
{
friend class XMLDocument;
public:
virtual XMLDeclaration* ToDeclaration() {
return this;
}
virtual const XMLDeclaration* ToDeclaration() const {
return this;
}
virtual bool Accept( XMLVisitor* visitor ) const;
virtual XMLNode* ShallowClone( XMLDocument* document ) const;
virtual bool ShallowEqual( const XMLNode* compare ) const;
protected:
XMLDeclaration( XMLDocument* doc );
virtual ~XMLDeclaration();
char* ParseDeep( char* p, StrPair* parentEndTag, int* curLineNumPtr );
private:
XMLDeclaration( const XMLDeclaration& ); // not supported
XMLDeclaration& operator=( const XMLDeclaration& ); // not supported
};
/** Any tag that TinyXML-2 doesn't recognize is saved as an
unknown. It is a tag of text, but should not be modified.
It will be written back to the XML, unchanged, when the file
is saved.
DTD tags get thrown into XMLUnknowns.
*/
class TINYXML2_LIB XMLUnknown : public XMLNode
{
friend class XMLDocument;
public:
virtual XMLUnknown* ToUnknown() {
return this;
}
virtual const XMLUnknown* ToUnknown() const {
return this;
}
virtual bool Accept( XMLVisitor* visitor ) const;
virtual XMLNode* ShallowClone( XMLDocument* document ) const;
virtual bool ShallowEqual( const XMLNode* compare ) const;
protected:
XMLUnknown( XMLDocument* doc );
virtual ~XMLUnknown();
char* ParseDeep( char* p, StrPair* parentEndTag, int* curLineNumPtr );
private:
XMLUnknown( const XMLUnknown& ); // not supported
XMLUnknown& operator=( const XMLUnknown& ); // not supported
};
/** An attribute is a name-value pair. Elements have an arbitrary
number of attributes, each with a unique name.
@note The attributes are not XMLNodes. You may only query the
Next() attribute in a list.
*/
class TINYXML2_LIB XMLAttribute
{
friend class XMLElement;
public:
/// The name of the attribute.
const char* Name() const;
/// The value of the attribute.
const char* Value() const;
/// Gets the line number the attribute is in, if the document was parsed from a file.
int GetLineNum() const { return _parseLineNum; }
/// The next attribute in the list.
const XMLAttribute* Next() const {
return _next;
}
/** IntValue interprets the attribute as an integer, and returns the value.
If the value isn't an integer, 0 will be returned. There is no error checking;
use QueryIntValue() if you need error checking.
*/
int IntValue() const {
int i = 0;
QueryIntValue(&i);
return i;
}
int64_t Int64Value() const {
int64_t i = 0;
QueryInt64Value(&i);
return i;
}
/// Query as an unsigned integer. See IntValue()
unsigned UnsignedValue() const {
unsigned i=0;
QueryUnsignedValue( &i );
return i;
}
/// Query as a boolean. See IntValue()
bool BoolValue() const {
bool b=false;
QueryBoolValue( &b );
return b;
}
/// Query as a double. See IntValue()
double DoubleValue() const {
double d=0;
QueryDoubleValue( &d );
return d;
}
/// Query as a float. See IntValue()
float FloatValue() const {
float f=0;
QueryFloatValue( &f );
return f;
}
/** QueryIntValue interprets the attribute as an integer, and returns the value
in the provided parameter. The function will return XML_SUCCESS on success,
and XML_WRONG_ATTRIBUTE_TYPE if the conversion is not successful.
*/
XMLError QueryIntValue( int* value ) const;
/// See QueryIntValue
XMLError QueryUnsignedValue( unsigned int* value ) const;
/// See QueryIntValue
XMLError QueryInt64Value(int64_t* value) const;
/// See QueryIntValue
XMLError QueryBoolValue( bool* value ) const;
/// See QueryIntValue
XMLError QueryDoubleValue( double* value ) const;
/// See QueryIntValue
XMLError QueryFloatValue( float* value ) const;
/// Set the attribute to a string value.
void SetAttribute( const char* value );
/// Set the attribute to value.
void SetAttribute( int value );
/// Set the attribute to value.
void SetAttribute( unsigned value );
/// Set the attribute to value.
void SetAttribute(int64_t value);
/// Set the attribute to value.
void SetAttribute( bool value );
/// Set the attribute to value.
void SetAttribute( double value );
/// Set the attribute to value.
void SetAttribute( float value );
private:
enum { BUF_SIZE = 200 };
XMLAttribute() : _name(), _value(),_parseLineNum( 0 ), _next( 0 ), _memPool( 0 ) {}
virtual ~XMLAttribute() {}
XMLAttribute( const XMLAttribute& ); // not supported
void operator=( const XMLAttribute& ); // not supported
void SetName( const char* name );
char* ParseDeep( char* p, bool processEntities, int* curLineNumPtr );
mutable StrPair _name;
mutable StrPair _value;
int _parseLineNum;
XMLAttribute* _next;
MemPool* _memPool;
};
/** 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 TINYXML2_LIB XMLElement : public XMLNode
{
friend class XMLDocument;
public:
/// Get the name of an element (which is the Value() of the node.)
const char* Name() const {
return Value();
}
/// Set the name of the element.
void SetName( const char* str, bool staticMem=false ) {
SetValue( str, staticMem );
}
virtual XMLElement* ToElement() {
return this;
}
virtual const XMLElement* ToElement() const {
return this;
}
virtual bool Accept( XMLVisitor* visitor ) const;
/** Given an attribute name, Attribute() returns the value
for the attribute of that name, or null if none
exists. For example:
@verbatim
const char* value = ele->Attribute( "foo" );
@endverbatim
The 'value' parameter is normally null. However, if specified,
the attribute will only be returned if the 'name' and 'value'
match. This allow you to write code:
@verbatim
if ( ele->Attribute( "foo", "bar" ) ) callFooIsBar();
@endverbatim
rather than:
@verbatim
if ( ele->Attribute( "foo" ) ) {
if ( strcmp( ele->Attribute( "foo" ), "bar" ) == 0 ) callFooIsBar();
}
@endverbatim
*/
const char* Attribute( const char* name, const char* value=0 ) const;
/** Given an attribute name, IntAttribute() returns the value
of the attribute interpreted as an integer. The default
value will be returned if the attribute isn't present,
or if there is an error. (For a method with error
checking, see QueryIntAttribute()).
*/
int IntAttribute(const char* name, int defaultValue = 0) const;
/// See IntAttribute()
unsigned UnsignedAttribute(const char* name, unsigned defaultValue = 0) const;
/// See IntAttribute()
int64_t Int64Attribute(const char* name, int64_t defaultValue = 0) const;
/// See IntAttribute()
bool BoolAttribute(const char* name, bool defaultValue = false) const;
/// See IntAttribute()
double DoubleAttribute(const char* name, double defaultValue = 0) const;
/// See IntAttribute()
float FloatAttribute(const char* name, float defaultValue = 0) const;
/** Given an attribute name, QueryIntAttribute() returns
XML_SUCCESS, XML_WRONG_ATTRIBUTE_TYPE if the conversion
can't be performed, or XML_NO_ATTRIBUTE if the attribute
doesn't exist. If successful, the result of the conversion
will be written to 'value'. If not successful, nothing will
be written to 'value'. This allows you to provide default
value:
@verbatim
int value = 10;
QueryIntAttribute( "foo", &value ); // if "foo" isn't found, value will still be 10
@endverbatim
*/
XMLError QueryIntAttribute( const char* name, int* value ) const {
const XMLAttribute* a = FindAttribute( name );
if ( !a ) {
return XML_NO_ATTRIBUTE;
}
return a->QueryIntValue( value );
}
/// See QueryIntAttribute()
XMLError QueryUnsignedAttribute( const char* name, unsigned int* value ) const {
const XMLAttribute* a = FindAttribute( name );
if ( !a ) {
return XML_NO_ATTRIBUTE;
}
return a->QueryUnsignedValue( value );
}
/// See QueryIntAttribute()
XMLError QueryInt64Attribute(const char* name, int64_t* value) const {
const XMLAttribute* a = FindAttribute(name);
if (!a) {
return XML_NO_ATTRIBUTE;
}
return a->QueryInt64Value(value);
}
/// See QueryIntAttribute()
XMLError QueryBoolAttribute( const char* name, bool* value ) const {
const XMLAttribute* a = FindAttribute( name );
if ( !a ) {
return XML_NO_ATTRIBUTE;
}
return a->QueryBoolValue( value );
}
/// See QueryIntAttribute()
XMLError QueryDoubleAttribute( const char* name, double* value ) const {
const XMLAttribute* a = FindAttribute( name );
if ( !a ) {
return XML_NO_ATTRIBUTE;
}
return a->QueryDoubleValue( value );
}
/// See QueryIntAttribute()
XMLError QueryFloatAttribute( const char* name, float* value ) const {
const XMLAttribute* a = FindAttribute( name );
if ( !a ) {
return XML_NO_ATTRIBUTE;
}
return a->QueryFloatValue( value );
}
/// See QueryIntAttribute()
XMLError QueryStringAttribute(const char* name, const char** value) const {
const XMLAttribute* a = FindAttribute(name);
if (!a) {
return XML_NO_ATTRIBUTE;
}
*value = a->Value();
return XML_SUCCESS;
}
/** Given an attribute name, QueryAttribute() returns
XML_SUCCESS, XML_WRONG_ATTRIBUTE_TYPE if the conversion
can't be performed, or XML_NO_ATTRIBUTE if the attribute
doesn't exist. It is overloaded for the primitive types,
and is a generally more convenient replacement of
QueryIntAttribute() and related functions.
If successful, the result of the conversion
will be written to 'value'. If not successful, nothing will
be written to 'value'. This allows you to provide default
value:
@verbatim
int value = 10;
QueryAttribute( "foo", &value ); // if "foo" isn't found, value will still be 10
@endverbatim
*/
int QueryAttribute( const char* name, int* value ) const {
return QueryIntAttribute( name, value );
}
int QueryAttribute( const char* name, unsigned int* value ) const {
return QueryUnsignedAttribute( name, value );
}
int QueryAttribute(const char* name, int64_t* value) const {
return QueryInt64Attribute(name, value);
}
int QueryAttribute( const char* name, bool* value ) const {
return QueryBoolAttribute( name, value );
}
int QueryAttribute( const char* name, double* value ) const {
return QueryDoubleAttribute( name, value );
}
int QueryAttribute( const char* name, float* value ) const {
return QueryFloatAttribute( name, value );
}
/// Sets the named attribute to value.
void SetAttribute( const char* name, const char* value ) {
XMLAttribute* a = FindOrCreateAttribute( name );
a->SetAttribute( value );
}
/// Sets the named attribute to value.
void SetAttribute( const char* name, int value ) {
XMLAttribute* a = FindOrCreateAttribute( name );
a->SetAttribute( value );
}
/// Sets the named attribute to value.
void SetAttribute( const char* name, unsigned value ) {
XMLAttribute* a = FindOrCreateAttribute( name );
a->SetAttribute( value );
}
/// Sets the named attribute to value.
void SetAttribute(const char* name, int64_t value) {
XMLAttribute* a = FindOrCreateAttribute(name);
a->SetAttribute(value);
}
/// Sets the named attribute to value.
void SetAttribute( const char* name, bool value ) {
XMLAttribute* a = FindOrCreateAttribute( name );
a->SetAttribute( value );
}
/// Sets the named attribute to value.
void SetAttribute( const char* name, double value ) {
XMLAttribute* a = FindOrCreateAttribute( name );
a->SetAttribute( value );
}
/// Sets the named attribute to value.
void SetAttribute( const char* name, float value ) {
XMLAttribute* a = FindOrCreateAttribute( name );
a->SetAttribute( value );
}
/**
Delete an attribute.
*/
void DeleteAttribute( const char* name );
/// Return the first attribute in the list.
const XMLAttribute* FirstAttribute() const {
return _rootAttribute;
}
/// Query a specific attribute in the list.
const XMLAttribute* FindAttribute( const char* name ) const;
/** Convenience function for easy access to the text inside an element. Although easy
and concise, GetText() is limited compared to getting the XMLText child
and accessing it directly.
If the first child of 'this' is a XMLText, the GetText()
returns the character string of the Text node, else null is returned.
This is a convenient method for getting the text of simple contained text:
@verbatim
This is text
const char* str = fooElement->GetText();
@endverbatim
'str' will be a pointer to "This is text".
Note that this function can be misleading. If the element foo was created from
this XML:
@verbatim
This is text
@endverbatim
then the value of str would be null. The first child node isn't a text node, it is
another element. From this XML:
@verbatim
This is text
@endverbatim
GetText() will return "This is ".
*/
const char* GetText() const;
/** Convenience function for easy access to the text inside an element. Although easy
and concise, SetText() is limited compared to creating an XMLText child
and mutating it directly.
If the first child of 'this' is a XMLText, SetText() sets its value to
the given string, otherwise it will create a first child that is an XMLText.
This is a convenient method for setting the text of simple contained text:
@verbatim
This is text
fooElement->SetText( "Hullaballoo!" );
Hullaballoo!
@endverbatim
Note that this function can be misleading. If the element foo was created from
this XML:
@verbatim
This is text
@endverbatim
then it will not change "This is text", but rather prefix it with a text element:
@verbatim
Hullaballoo!This is text
@endverbatim
For this XML:
@verbatim
@endverbatim
SetText() will generate
@verbatim
Hullaballoo!
@endverbatim
*/
void SetText( const char* inText );
/// Convenience method for setting text inside an element. See SetText() for important limitations.
void SetText( int value );
/// Convenience method for setting text inside an element. See SetText() for important limitations.
void SetText( unsigned value );
/// Convenience method for setting text inside an element. See SetText() for important limitations.
void SetText(int64_t value);
/// Convenience method for setting text inside an element. See SetText() for important limitations.
void SetText( bool value );
/// Convenience method for setting text inside an element. See SetText() for important limitations.
void SetText( double value );
/// Convenience method for setting text inside an element. See SetText() for important limitations.
void SetText( float value );
/**
Convenience method to query the value of a child text node. This is probably best
shown by example. Given you have a document is this form:
@verbatim
1
1.4
@endverbatim
The QueryIntText() and similar functions provide a safe and easier way to get to the
"value" of x and y.
@verbatim
int x = 0;
float y = 0; // types of x and y are contrived for example
const XMLElement* xElement = pointElement->FirstChildElement( "x" );
const XMLElement* yElement = pointElement->FirstChildElement( "y" );
xElement->QueryIntText( &x );
yElement->QueryFloatText( &y );
@endverbatim
@returns XML_SUCCESS (0) on success, XML_CAN_NOT_CONVERT_TEXT if the text cannot be converted
to the requested type, and XML_NO_TEXT_NODE if there is no child text to query.
*/
XMLError QueryIntText( int* ival ) const;
/// See QueryIntText()
XMLError QueryUnsignedText( unsigned* uval ) const;
/// See QueryIntText()
XMLError QueryInt64Text(int64_t* uval) const;
/// See QueryIntText()
XMLError QueryBoolText( bool* bval ) const;
/// See QueryIntText()
XMLError QueryDoubleText( double* dval ) const;
/// See QueryIntText()
XMLError QueryFloatText( float* fval ) const;
int IntText(int defaultValue = 0) const;
/// See QueryIntText()
unsigned UnsignedText(unsigned defaultValue = 0) const;
/// See QueryIntText()
int64_t Int64Text(int64_t defaultValue = 0) const;
/// See QueryIntText()
bool BoolText(bool defaultValue = false) const;
/// See QueryIntText()
double DoubleText(double defaultValue = 0) const;
/// See QueryIntText()
float FloatText(float defaultValue = 0) const;
// internal:
enum ElementClosingType {
OPEN, //
CLOSED, //
CLOSING //
};
ElementClosingType ClosingType() const {
return _closingType;
}
virtual XMLNode* ShallowClone( XMLDocument* document ) const;
virtual bool ShallowEqual( const XMLNode* compare ) const;
protected:
char* ParseDeep( char* p, StrPair* parentEndTag, int* curLineNumPtr );
private:
XMLElement( XMLDocument* doc );
virtual ~XMLElement();
XMLElement( const XMLElement& ); // not supported
void operator=( const XMLElement& ); // not supported
XMLAttribute* FindAttribute( const char* name ) {
return const_cast(const_cast(this)->FindAttribute( name ));
}
XMLAttribute* FindOrCreateAttribute( const char* name );
//void LinkAttribute( XMLAttribute* attrib );
char* ParseAttributes( char* p, int* curLineNumPtr );
static void DeleteAttribute( XMLAttribute* attribute );
XMLAttribute* CreateAttribute();
enum { BUF_SIZE = 200 };
ElementClosingType _closingType;
// The attribute list is ordered; there is no 'lastAttribute'
// because the list needs to be scanned for dupes before adding
// a new attribute.
XMLAttribute* _rootAttribute;
};
enum Whitespace {
PRESERVE_WHITESPACE,
COLLAPSE_WHITESPACE
};
/** A Document binds together all the functionality.
It can be saved, loaded, and printed to the screen.
All Nodes are connected and allocated to a Document.
If the Document is deleted, all its Nodes are also deleted.
*/
class TINYXML2_LIB XMLDocument : public XMLNode
{
friend class XMLElement;
// Gives access to SetError and Push/PopDepth, but over-access for everything else.
// Wishing C++ had "internal" scope.
friend class XMLNode;
friend class XMLText;
friend class XMLComment;
friend class XMLDeclaration;
friend class XMLUnknown;
public:
/// constructor
XMLDocument( bool processEntities = true, Whitespace whitespaceMode = PRESERVE_WHITESPACE );
~XMLDocument();
virtual XMLDocument* ToDocument() {
TIXMLASSERT( this == _document );
return this;
}
virtual const XMLDocument* ToDocument() const {
TIXMLASSERT( this == _document );
return this;
}
/**
Parse an XML file from a character string.
Returns XML_SUCCESS (0) on success, or
an errorID.
You may optionally pass in the 'nBytes', which is
the number of bytes which will be parsed. If not
specified, TinyXML-2 will assume 'xml' points to a
null terminated string.
*/
XMLError Parse( const char* xml, size_t nBytes=(size_t)(-1) );
/**
Load an XML file from disk.
Returns XML_SUCCESS (0) on success, or
an errorID.
*/
XMLError LoadFile( const char* filename );
/**
Load an XML file from disk. You are responsible
for providing and closing the FILE*.
NOTE: The file should be opened as binary ("rb")
not text in order for TinyXML-2 to correctly
do newline normalization.
Returns XML_SUCCESS (0) on success, or
an errorID.
*/
XMLError LoadFile( FILE* );
/**
Save the XML file to disk.
Returns XML_SUCCESS (0) on success, or
an errorID.
*/
XMLError SaveFile( const char* filename, bool compact = false );
/**
Save the XML file to disk. You are responsible
for providing and closing the FILE*.
Returns XML_SUCCESS (0) on success, or
an errorID.
*/
XMLError SaveFile( FILE* fp, bool compact = false );
bool ProcessEntities() const {
return _processEntities;
}
Whitespace WhitespaceMode() const {
return _whitespaceMode;
}
/**
Returns true if this document has a leading Byte Order Mark of UTF8.
*/
bool HasBOM() const {
return _writeBOM;
}
/** Sets whether to write the BOM when writing the file.
*/
void SetBOM( bool useBOM ) {
_writeBOM = useBOM;
}
/** Return the root element of DOM. Equivalent to FirstChildElement().
To get the first node, use FirstChild().
*/
XMLElement* RootElement() {
return FirstChildElement();
}
const XMLElement* RootElement() const {
return FirstChildElement();
}
/** Print the Document. If the Printer is not provided, it will
print to stdout. If you provide Printer, this can print to a file:
@verbatim
XMLPrinter printer( fp );
doc.Print( &printer );
@endverbatim
Or you can use a printer to print to memory:
@verbatim
XMLPrinter printer;
doc.Print( &printer );
// printer.CStr() has a const char* to the XML
@endverbatim
*/
void Print( XMLPrinter* streamer=0 ) const;
virtual bool Accept( XMLVisitor* visitor ) const;
/**
Create a new Element associated with
this Document. The memory for the Element
is managed by the Document.
*/
XMLElement* NewElement( const char* name );
/**
Create a new Comment associated with
this Document. The memory for the Comment
is managed by the Document.
*/
XMLComment* NewComment( const char* comment );
/**
Create a new Text associated with
this Document. The memory for the Text
is managed by the Document.
*/
XMLText* NewText( const char* text );
/**
Create a new Declaration associated with
this Document. The memory for the object
is managed by the Document.
If the 'text' param is null, the standard
declaration is used.:
@verbatim
@endverbatim
*/
XMLDeclaration* NewDeclaration( const char* text=0 );
/**
Create a new Unknown associated with
this Document. The memory for the object
is managed by the Document.
*/
XMLUnknown* NewUnknown( const char* text );
/**
Delete a node associated with this document.
It will be unlinked from the DOM.
*/
void DeleteNode( XMLNode* node );
void ClearError() {
SetError(XML_SUCCESS, 0, 0);
}
/// Return true if there was an error parsing the document.
bool Error() const {
return _errorID != XML_SUCCESS;
}
/// Return the errorID.
XMLError ErrorID() const {
return _errorID;
}
const char* ErrorName() const;
static const char* ErrorIDToName(XMLError errorID);
/** Returns a "long form" error description. A hopefully helpful
diagnostic with location, line number, and/or additional info.
*/
const char* ErrorStr() const;
/// A (trivial) utility function that prints the ErrorStr() to stdout.
void PrintError() const;
/// Return the line where the error occured, or zero if unknown.
int ErrorLineNum() const
{
return _errorLineNum;
}
/// Clear the document, resetting it to the initial state.
void Clear();
/**
Copies this document to a target document.
The target will be completely cleared before the copy.
If you want to copy a sub-tree, see XMLNode::DeepClone().
NOTE: that the 'target' must be non-null.
*/
void DeepCopy(XMLDocument* target) const;
// internal
char* Identify( char* p, XMLNode** node );
// internal
void MarkInUse(XMLNode*);
virtual XMLNode* ShallowClone( XMLDocument* /*document*/ ) const {
return 0;
}
virtual bool ShallowEqual( const XMLNode* /*compare*/ ) const {
return false;
}
private:
XMLDocument( const XMLDocument& ); // not supported
void operator=( const XMLDocument& ); // not supported
bool _writeBOM;
bool _processEntities;
XMLError _errorID;
Whitespace _whitespaceMode;
mutable StrPair _errorStr;
int _errorLineNum;
char* _charBuffer;
int _parseCurLineNum;
int _parsingDepth;
// Memory tracking does add some overhead.
// However, the code assumes that you don't
// have a bunch of unlinked nodes around.
// Therefore it takes less memory to track
// in the document vs. a linked list in the XMLNode,
// and the performance is the same.
DynArray _unlinked;
MemPoolT< sizeof(XMLElement) > _elementPool;
MemPoolT< sizeof(XMLAttribute) > _attributePool;
MemPoolT< sizeof(XMLText) > _textPool;
MemPoolT< sizeof(XMLComment) > _commentPool;
static const char* _errorNames[XML_ERROR_COUNT];
void Parse();
void SetError( XMLError error, int lineNum, const char* format, ... );
// Something of an obvious security hole, once it was discovered.
// Either an ill-formed XML or an excessively deep one can overflow
// the stack. Track stack depth, and error out if needed.
class DepthTracker {
public:
DepthTracker(XMLDocument * document) {
this->_document = document;
document->PushDepth();
}
~DepthTracker() {
_document->PopDepth();
}
private:
XMLDocument * _document;
};
void PushDepth();
void PopDepth();
template
NodeType* CreateUnlinkedNode( MemPoolT& pool );
};
template
inline NodeType* XMLDocument::CreateUnlinkedNode( MemPoolT& pool )
{
TIXMLASSERT( sizeof( NodeType ) == PoolElementSize );
TIXMLASSERT( sizeof( NodeType ) == pool.ItemSize() );
NodeType* returnNode = new (pool.Alloc()) NodeType( this );
TIXMLASSERT( returnNode );
returnNode->_memPool = &pool;
_unlinked.Push(returnNode);
return returnNode;
}
/**
A XMLHandle is a class that wraps a node pointer with null checks; this is
an incredibly useful thing. Note that XMLHandle is not part of the TinyXML-2
DOM structure. It is a separate utility class.
Take an example:
@verbatim
@endverbatim
Assuming you want the value of "attributeB" in the 2nd "Child" element, it's very
easy to write a *lot* of code that looks like:
@verbatim
XMLElement* root = document.FirstChildElement( "Document" );
if ( root )
{
XMLElement* element = root->FirstChildElement( "Element" );
if ( element )
{
XMLElement* child = element->FirstChildElement( "Child" );
if ( child )
{
XMLElement* child2 = child->NextSiblingElement( "Child" );
if ( child2 )
{
// Finally do something useful.
@endverbatim
And that doesn't even cover "else" cases. XMLHandle addresses the verbosity
of such code. A XMLHandle checks for null pointers so it is perfectly safe
and correct to use:
@verbatim
XMLHandle docHandle( &document );
XMLElement* child2 = docHandle.FirstChildElement( "Document" ).FirstChildElement( "Element" ).FirstChildElement().NextSiblingElement();
if ( child2 )
{
// do something useful
@endverbatim
Which is MUCH more concise and useful.
It is also safe to copy handles - internally they are nothing more than node pointers.
@verbatim
XMLHandle handleCopy = handle;
@endverbatim
See also XMLConstHandle, which is the same as XMLHandle, but operates on const objects.
*/
class TINYXML2_LIB XMLHandle
{
public:
/// Create a handle from any node (at any depth of the tree.) This can be a null pointer.
XMLHandle( XMLNode* node ) : _node( node ) {
}
/// Create a handle from a node.
XMLHandle( XMLNode& node ) : _node( &node ) {
}
/// Copy constructor
XMLHandle( const XMLHandle& ref ) : _node( ref._node ) {
}
/// Assignment
XMLHandle& operator=( const XMLHandle& ref ) {
_node = ref._node;
return *this;
}
/// Get the first child of this handle.
XMLHandle FirstChild() {
return XMLHandle( _node ? _node->FirstChild() : 0 );
}
/// Get the first child element of this handle.
XMLHandle FirstChildElement( const char* name = 0 ) {
return XMLHandle( _node ? _node->FirstChildElement( name ) : 0 );
}
/// Get the last child of this handle.
XMLHandle LastChild() {
return XMLHandle( _node ? _node->LastChild() : 0 );
}
/// Get the last child element of this handle.
XMLHandle LastChildElement( const char* name = 0 ) {
return XMLHandle( _node ? _node->LastChildElement( name ) : 0 );
}
/// Get the previous sibling of this handle.
XMLHandle PreviousSibling() {
return XMLHandle( _node ? _node->PreviousSibling() : 0 );
}
/// Get the previous sibling element of this handle.
XMLHandle PreviousSiblingElement( const char* name = 0 ) {
return XMLHandle( _node ? _node->PreviousSiblingElement( name ) : 0 );
}
/// Get the next sibling of this handle.
XMLHandle NextSibling() {
return XMLHandle( _node ? _node->NextSibling() : 0 );
}
/// Get the next sibling element of this handle.
XMLHandle NextSiblingElement( const char* name = 0 ) {
return XMLHandle( _node ? _node->NextSiblingElement( name ) : 0 );
}
/// Safe cast to XMLNode. This can return null.
XMLNode* ToNode() {
return _node;
}
/// Safe cast to XMLElement. This can return null.
XMLElement* ToElement() {
return ( _node ? _node->ToElement() : 0 );
}
/// Safe cast to XMLText. This can return null.
XMLText* ToText() {
return ( _node ? _node->ToText() : 0 );
}
/// Safe cast to XMLUnknown. This can return null.
XMLUnknown* ToUnknown() {
return ( _node ? _node->ToUnknown() : 0 );
}
/// Safe cast to XMLDeclaration. This can return null.
XMLDeclaration* ToDeclaration() {
return ( _node ? _node->ToDeclaration() : 0 );
}
private:
XMLNode* _node;
};
/**
A variant of the XMLHandle class for working with const XMLNodes and Documents. It is the
same in all regards, except for the 'const' qualifiers. See XMLHandle for API.
*/
class TINYXML2_LIB XMLConstHandle
{
public:
XMLConstHandle( const XMLNode* node ) : _node( node ) {
}
XMLConstHandle( const XMLNode& node ) : _node( &node ) {
}
XMLConstHandle( const XMLConstHandle& ref ) : _node( ref._node ) {
}
XMLConstHandle& operator=( const XMLConstHandle& ref ) {
_node = ref._node;
return *this;
}
const XMLConstHandle FirstChild() const {
return XMLConstHandle( _node ? _node->FirstChild() : 0 );
}
const XMLConstHandle FirstChildElement( const char* name = 0 ) const {
return XMLConstHandle( _node ? _node->FirstChildElement( name ) : 0 );
}
const XMLConstHandle LastChild() const {
return XMLConstHandle( _node ? _node->LastChild() : 0 );
}
const XMLConstHandle LastChildElement( const char* name = 0 ) const {
return XMLConstHandle( _node ? _node->LastChildElement( name ) : 0 );
}
const XMLConstHandle PreviousSibling() const {
return XMLConstHandle( _node ? _node->PreviousSibling() : 0 );
}
const XMLConstHandle PreviousSiblingElement( const char* name = 0 ) const {
return XMLConstHandle( _node ? _node->PreviousSiblingElement( name ) : 0 );
}
const XMLConstHandle NextSibling() const {
return XMLConstHandle( _node ? _node->NextSibling() : 0 );
}
const XMLConstHandle NextSiblingElement( const char* name = 0 ) const {
return XMLConstHandle( _node ? _node->NextSiblingElement( name ) : 0 );
}
const XMLNode* ToNode() const {
return _node;
}
const XMLElement* ToElement() const {
return ( _node ? _node->ToElement() : 0 );
}
const XMLText* ToText() const {
return ( _node ? _node->ToText() : 0 );
}
const XMLUnknown* ToUnknown() const {
return ( _node ? _node->ToUnknown() : 0 );
}
const XMLDeclaration* ToDeclaration() const {
return ( _node ? _node->ToDeclaration() : 0 );
}
private:
const XMLNode* _node;
};
/**
Printing functionality. The XMLPrinter gives you more
options than the XMLDocument::Print() method.
It can:
-# Print to memory.
-# Print to a file you provide.
-# Print XML without a XMLDocument.
Print to Memory
@verbatim
XMLPrinter printer;
doc.Print( &printer );
SomeFunction( printer.CStr() );
@endverbatim
Print to a File
You provide the file pointer.
@verbatim
XMLPrinter printer( fp );
doc.Print( &printer );
@endverbatim
Print without a XMLDocument
When loading, an XML parser is very useful. However, sometimes
when saving, it just gets in the way. The code is often set up
for streaming, and constructing the DOM is just overhead.
The Printer supports the streaming case. The following code
prints out a trivially simple XML file without ever creating
an XML document.
@verbatim
XMLPrinter printer( fp );
printer.OpenElement( "foo" );
printer.PushAttribute( "foo", "bar" );
printer.CloseElement();
@endverbatim
*/
class TINYXML2_LIB XMLPrinter : public XMLVisitor
{
public:
/** Construct the printer. If the FILE* is specified,
this will print to the FILE. Else it will print
to memory, and the result is available in CStr().
If 'compact' is set to true, then output is created
with only required whitespace and newlines.
*/
XMLPrinter( FILE* file=0, bool compact = false, int depth = 0 );
virtual ~XMLPrinter() {}
/** If streaming, write the BOM and declaration. */
void PushHeader( bool writeBOM, bool writeDeclaration );
/** If streaming, start writing an element.
The element must be closed with CloseElement()
*/
void OpenElement( const char* name, bool compactMode=false );
/// If streaming, add an attribute to an open element.
void PushAttribute( const char* name, const char* value );
void PushAttribute( const char* name, int value );
void PushAttribute( const char* name, unsigned value );
void PushAttribute(const char* name, int64_t value);
void PushAttribute( const char* name, bool value );
void PushAttribute( const char* name, double value );
/// If streaming, close the Element.
virtual void CloseElement( bool compactMode=false );
/// Add a text node.
void PushText( const char* text, bool cdata=false );
/// Add a text node from an integer.
void PushText( int value );
/// Add a text node from an unsigned.
void PushText( unsigned value );
/// Add a text node from an unsigned.
void PushText(int64_t value);
/// Add a text node from a bool.
void PushText( bool value );
/// Add a text node from a float.
void PushText( float value );
/// Add a text node from a double.
void PushText( double value );
/// Add a comment
void PushComment( const char* comment );
void PushDeclaration( const char* value );
void PushUnknown( const char* value );
virtual bool VisitEnter( const XMLDocument& /*doc*/ );
virtual bool VisitExit( const XMLDocument& /*doc*/ ) {
return true;
}
virtual bool VisitEnter( const XMLElement& element, const XMLAttribute* attribute );
virtual bool VisitExit( const XMLElement& element );
virtual bool Visit( const XMLText& text );
virtual bool Visit( const XMLComment& comment );
virtual bool Visit( const XMLDeclaration& declaration );
virtual bool Visit( const XMLUnknown& unknown );
/**
If in print to memory mode, return a pointer to
the XML file in memory.
*/
const char* CStr() const {
return _buffer.Mem();
}
/**
If in print to memory mode, return the size
of the XML file in memory. (Note the size returned
includes the terminating null.)
*/
int CStrSize() const {
return _buffer.Size();
}
/**
If in print to memory mode, reset the buffer to the
beginning.
*/
void ClearBuffer() {
_buffer.Clear();
_buffer.Push(0);
_firstElement = true;
}
protected:
virtual bool CompactMode( const XMLElement& ) { return _compactMode; }
/** Prints out the space before an element. You may override to change
the space and tabs used. A PrintSpace() override should call Print().
*/
virtual void PrintSpace( int depth );
void Print( const char* format, ... );
void Write( const char* data, size_t size );
inline void Write( const char* data ) { Write( data, strlen( data ) ); }
void Putc( char ch );
void SealElementIfJustOpened();
bool _elementJustOpened;
DynArray< const char*, 10 > _stack;
private:
void PrintString( const char*, bool restrictedEntitySet ); // prints out, after detecting entities.
bool _firstElement;
FILE* _fp;
int _depth;
int _textDepth;
bool _processEntities;
bool _compactMode;
enum {
ENTITY_RANGE = 64,
BUF_SIZE = 200
};
bool _entityFlag[ENTITY_RANGE];
bool _restrictedEntityFlag[ENTITY_RANGE];
DynArray< char, 20 > _buffer;
// Prohibit cloning, intentionally not implemented
XMLPrinter( const XMLPrinter& );
XMLPrinter& operator=( const XMLPrinter& );
};
} // tinyxml2
#if defined(_MSC_VER)
# pragma warning(pop)
#endif
#endif // TINYXML2_INCLUDED
tinyxml2.cpp /*
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.
*/
#include "tinyxml2.h"
#include // yes, this one new style header, is in the Android SDK.
#if defined(ANDROID_NDK) || defined(__BORLANDC__) || defined(__QNXNTO__)
# include
# include
#else
# include
# include
#endif
#if defined(_MSC_VER) && (_MSC_VER >= 1400 ) && (!defined WINCE)
// Microsoft Visual Studio, version 2005 and higher. Not WinCE.
/*int _snprintf_s(
char *buffer,
size_t sizeOfBuffer,
size_t count,
const char *format [,
argument] ...
);*/
static inline int TIXML_SNPRINTF( char* buffer, size_t size, const char* format, ... )
{
va_list va;
va_start( va, format );
int result = vsnprintf_s( buffer, size, _TRUNCATE, format, va );
va_end( va );
return result;
}
static inline int TIXML_VSNPRINTF( char* buffer, size_t size, const char* format, va_list va )
{
int result = vsnprintf_s( buffer, size, _TRUNCATE, format, va );
return result;
}
#define TIXML_VSCPRINTF _vscprintf
#define TIXML_SSCANF sscanf_s
#elif defined _MSC_VER
// Microsoft Visual Studio 2003 and earlier or WinCE
#define TIXML_SNPRINTF _snprintf
#define TIXML_VSNPRINTF _vsnprintf
#define TIXML_SSCANF sscanf
#if (_MSC_VER < 1400 ) && (!defined WINCE)
// Microsoft Visual Studio 2003 and not WinCE.
#define TIXML_VSCPRINTF _vscprintf // VS2003's C runtime has this, but VC6 C runtime or WinCE SDK doesn't have.
#else
// Microsoft Visual Studio 2003 and earlier or WinCE.
static inline int TIXML_VSCPRINTF( const char* format, va_list va )
{
int len = 512;
for (;;) {
len = len*2;
char* str = new char[len]();
const int required = _vsnprintf(str, len, format, va);
delete[] str;
if ( required != -1 ) {
TIXMLASSERT( required >= 0 );
len = required;
break;
}
}
TIXMLASSERT( len >= 0 );
return len;
}
#endif
#else
// GCC version 3 and higher
//#warning( "Using sn* functions." )
#define TIXML_SNPRINTF snprintf
#define TIXML_VSNPRINTF vsnprintf
static inline int TIXML_VSCPRINTF( const char* format, va_list va )
{
int len = vsnprintf( 0, 0, format, va );
TIXMLASSERT( len >= 0 );
return len;
}
#define TIXML_SSCANF sscanf
#endif
static const char LINE_FEED = (char)0x0a; // all line endings are normalized to LF
static const char LF = LINE_FEED;
static const char CARRIAGE_RETURN = (char)0x0d; // CR gets filtered out
static const char CR = CARRIAGE_RETURN;
static const char SINGLE_QUOTE = '\'';
static const char DOUBLE_QUOTE = '\"';
// Bunch of unicode info at:
// http://www.unicode.org/faq/utf_bom.html
// ef bb bf (Microsoft "lead bytes") - designates UTF-8
static const unsigned char TIXML_UTF_LEAD_0 = 0xefU;
static const unsigned char TIXML_UTF_LEAD_1 = 0xbbU;
static const unsigned char TIXML_UTF_LEAD_2 = 0xbfU;
namespace tinyxml2
{
struct Entity {
const char* pattern;
int length;
char value;
};
static const int NUM_ENTITIES = 5;
static const Entity entities[NUM_ENTITIES] = {
{ "quot", 4, DOUBLE_QUOTE },
{ "amp", 3, '&' },
{ "apos", 4, SINGLE_QUOTE },
{ "lt", 2, '<' },
{ "gt", 2, '>' }
};
StrPair::~StrPair()
{
Reset();
}
void StrPair::TransferTo( StrPair* other )
{
if ( this == other ) {
return;
}
// This in effect implements the assignment operator by "moving"
// ownership (as in auto_ptr).
TIXMLASSERT( other != 0 );
TIXMLASSERT( other->_flags == 0 );
TIXMLASSERT( other->_start == 0 );
TIXMLASSERT( other->_end == 0 );
other->Reset();
other->_flags = _flags;
other->_start = _start;
other->_end = _end;
_flags = 0;
_start = 0;
_end = 0;
}
void StrPair::Reset()
{
if ( _flags & NEEDS_DELETE ) {
delete [] _start;
}
_flags = 0;
_start = 0;
_end = 0;
}
void StrPair::SetStr( const char* str, int flags )
{
TIXMLASSERT( str );
Reset();
size_t len = strlen( str );
TIXMLASSERT( _start == 0 );
_start = new char[ len+1 ];
memcpy( _start, str, len+1 );
_end = _start + len;
_flags = flags | NEEDS_DELETE;
}
char* StrPair::ParseText( char* p, const char* endTag, int strFlags, int* curLineNumPtr )
{
TIXMLASSERT( p );
TIXMLASSERT( endTag && *endTag );
TIXMLASSERT(curLineNumPtr);
char* start = p;
char endChar = *endTag;
size_t length = strlen( endTag );
// Inner loop of text parsing.
while ( *p ) {
if ( *p == endChar && strncmp( p, endTag, length ) == 0 ) {
Set( start, p, strFlags );
return p + length;
} else if (*p == '\n') {
++(*curLineNumPtr);
}
++p;
TIXMLASSERT( p );
}
return 0;
}
char* StrPair::ParseName( char* p )
{
if ( !p || !(*p) ) {
return 0;
}
if ( !XMLUtil::IsNameStartChar( *p ) ) {
return 0;
}
char* const start = p;
++p;
while ( *p && XMLUtil::IsNameChar( *p ) ) {
++p;
}
Set( start, p, 0 );
return p;
}
void StrPair::CollapseWhitespace()
{
// Adjusting _start would cause undefined behavior on delete[]
TIXMLASSERT( ( _flags & NEEDS_DELETE ) == 0 );
// Trim leading space.
_start = XMLUtil::SkipWhiteSpace( _start, 0 );
if ( *_start ) {
const char* p = _start; // the read pointer
char* q = _start; // the write pointer
while( *p ) {
if ( XMLUtil::IsWhiteSpace( *p )) {
p = XMLUtil::SkipWhiteSpace( p, 0 );
if ( *p == 0 ) {
break; // don't write to q; this trims the trailing space.
}
*q = ' ';
++q;
}
*q = *p;
++q;
++p;
}
*q = 0;
}
}
const char* StrPair::GetStr()
{
TIXMLASSERT( _start );
TIXMLASSERT( _end );
if ( _flags & NEEDS_FLUSH ) {
*_end = 0;
_flags ^= NEEDS_FLUSH;
if ( _flags ) {
const char* p = _start; // the read pointer
char* q = _start; // the write pointer
while( p < _end ) {
if ( (_flags & NEEDS_NEWLINE_NORMALIZATION) && *p == CR ) {
// CR-LF pair becomes LF
// CR alone becomes LF
// LF-CR becomes LF
if ( *(p+1) == LF ) {
p += 2;
}
else {
++p;
}
*q = LF;
++q;
}
else if ( (_flags & NEEDS_NEWLINE_NORMALIZATION) && *p == LF ) {
if ( *(p+1) == CR ) {
p += 2;
}
else {
++p;
}
*q = LF;
++q;
}
else if ( (_flags & NEEDS_ENTITY_PROCESSING) && *p == '&' ) {
// Entities handled by tinyXML2:
// - special entities in the entity table [in/out]
// - numeric character reference [in]
// 中 or 中
if ( *(p+1) == '#' ) {
const int buflen = 10;
char buf[buflen] = { 0 };
int len = 0;
char* adjusted = const_cast( XMLUtil::GetCharacterRef( p, buf, &len ) );
if ( adjusted == 0 ) {
*q = *p;
++p;
++q;
}
else {
TIXMLASSERT( 0 <= len && len <= buflen );
TIXMLASSERT( q + len <= adjusted );
p = adjusted;
memcpy( q, buf, len );
q += len;
}
}
else {
bool entityFound = false;
for( int i = 0; i < NUM_ENTITIES; ++i ) {
const Entity& entity = entities[i];
if ( strncmp( p + 1, entity.pattern, entity.length ) == 0
&& *( p + entity.length + 1 ) == ';' ) {
// Found an entity - convert.
*q = entity.value;
++q;
p += entity.length + 2;
entityFound = true;
break;
}
}
if ( !entityFound ) {
// fixme: treat as error?
++p;
++q;
}
}
}
else {
*q = *p;
++p;
++q;
}
}
*q = 0;
}
// The loop below has plenty going on, and this
// is a less useful mode. Break it out.
if ( _flags & NEEDS_WHITESPACE_COLLAPSING ) {
CollapseWhitespace();
}
_flags = (_flags & NEEDS_DELETE);
}
TIXMLASSERT( _start );
return _start;
}
// --------- XMLUtil ----------- //
const char* XMLUtil::writeBoolTrue = "true";
const char* XMLUtil::writeBoolFalse = "false";
void XMLUtil::SetBoolSerialization(const char* writeTrue, const char* writeFalse)
{
static const char* defTrue = "true";
static const char* defFalse = "false";
writeBoolTrue = (writeTrue) ? writeTrue : defTrue;
writeBoolFalse = (writeFalse) ? writeFalse : defFalse;
}
const char* XMLUtil::ReadBOM( const char* p, bool* bom )
{
TIXMLASSERT( p );
TIXMLASSERT( bom );
*bom = false;
const unsigned char* pu = reinterpret_cast(p);
// Check for BOM:
if ( *(pu+0) == TIXML_UTF_LEAD_0
&& *(pu+1) == TIXML_UTF_LEAD_1
&& *(pu+2) == TIXML_UTF_LEAD_2 ) {
*bom = true;
p += 3;
}
TIXMLASSERT( p );
return p;
}
void XMLUtil::ConvertUTF32ToUTF8( unsigned long input, char* output, int* length )
{
const unsigned long BYTE_MASK = 0xBF;
const unsigned long BYTE_MARK = 0x80;
const unsigned long FIRST_BYTE_MARK[7] = { 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
if (input < 0x80) {
*length = 1;
}
else if ( input < 0x800 ) {
*length = 2;
}
else if ( input < 0x10000 ) {
*length = 3;
}
else if ( input < 0x200000 ) {
*length = 4;
}
else {
*length = 0; // This code won't convert this correctly anyway.
return;
}
output += *length;
// Scary scary fall throughs are annotated with carefully designed comments
// to suppress compiler warnings such as -Wimplicit-fallthrough in gcc
switch (*length) {
case 4:
--output;
*output = (char)((input | BYTE_MARK) & BYTE_MASK);
input >>= 6;
//fall through
case 3:
--output;
*output = (char)((input | BYTE_MARK) & BYTE_MASK);
input >>= 6;
//fall through
case 2:
--output;
*output = (char)((input | BYTE_MARK) & BYTE_MASK);
input >>= 6;
//fall through
case 1:
--output;
*output = (char)(input | FIRST_BYTE_MARK[*length]);
break;
default:
TIXMLASSERT( false );
}
}
const char* XMLUtil::GetCharacterRef( const char* p, char* value, int* length )
{
// Presume an entity, and pull it out.
*length = 0;
if ( *(p+1) == '#' && *(p+2) ) {
unsigned long ucs = 0;
TIXMLASSERT( sizeof( ucs ) >= 4 );
ptrdiff_t delta = 0;
unsigned mult = 1;
static const char SEMICOLON = ';';
if ( *(p+2) == 'x' ) {
// Hexadecimal.
const char* q = p+3;
if ( !(*q) ) {
return 0;
}
q = strchr( q, SEMICOLON );
if ( !q ) {
return 0;
}
TIXMLASSERT( *q == SEMICOLON );
delta = q-p;
--q;
while ( *q != 'x' ) {
unsigned int digit = 0;
if ( *q >= '0' && *q <= '9' ) {
digit = *q - '0';
}
else if ( *q >= 'a' && *q <= 'f' ) {
digit = *q - 'a' + 10;
}
else if ( *q >= 'A' && *q <= 'F' ) {
digit = *q - 'A' + 10;
}
else {
return 0;
}
TIXMLASSERT( digit < 16 );
TIXMLASSERT( digit == 0 || mult <= UINT_MAX / digit );
const unsigned int digitScaled = mult * digit;
TIXMLASSERT( ucs <= ULONG_MAX - digitScaled );
ucs += digitScaled;
TIXMLASSERT( mult <= UINT_MAX / 16 );
mult *= 16;
--q;
}
}
else {
// Decimal.
const char* q = p+2;
if ( !(*q) ) {
return 0;
}
q = strchr( q, SEMICOLON );
if ( !q ) {
return 0;
}
TIXMLASSERT( *q == SEMICOLON );
delta = q-p;
--q;
while ( *q != '#' ) {
if ( *q >= '0' && *q <= '9' ) {
const unsigned int digit = *q - '0';
TIXMLASSERT( digit < 10 );
TIXMLASSERT( digit == 0 || mult <= UINT_MAX / digit );
const unsigned int digitScaled = mult * digit;
TIXMLASSERT( ucs <= ULONG_MAX - digitScaled );
ucs += digitScaled;
}
else {
return 0;
}
TIXMLASSERT( mult <= UINT_MAX / 10 );
mult *= 10;
--q;
}
}
// convert the UCS to UTF-8
ConvertUTF32ToUTF8( ucs, value, length );
return p + delta + 1;
}
return p+1;
}
void XMLUtil::ToStr( int v, char* buffer, int bufferSize )
{
TIXML_SNPRINTF( buffer, bufferSize, "%d", v );
}
void XMLUtil::ToStr( unsigned v, char* buffer, int bufferSize )
{
TIXML_SNPRINTF( buffer, bufferSize, "%u", v );
}
void XMLUtil::ToStr( bool v, char* buffer, int bufferSize )
{
TIXML_SNPRINTF( buffer, bufferSize, "%s", v ? writeBoolTrue : writeBoolFalse);
}
/*
ToStr() of a number is a very tricky topic.
https://github.com/leethomason/tinyxml2/issues/106
*/
void XMLUtil::ToStr( float v, char* buffer, int bufferSize )
{
TIXML_SNPRINTF( buffer, bufferSize, "%.8g", v );
}
void XMLUtil::ToStr( double v, char* buffer, int bufferSize )
{
TIXML_SNPRINTF( buffer, bufferSize, "%.17g", v );
}
void XMLUtil::ToStr(int64_t v, char* buffer, int bufferSize)
{
// horrible syntax trick to make the compiler happy about %lld
TIXML_SNPRINTF(buffer, bufferSize, "%lld", (long long)v);
}
bool XMLUtil::ToInt( const char* str, int* value )
{
if ( TIXML_SSCANF( str, "%d", value ) == 1 ) {
return true;
}
return false;
}
bool XMLUtil::ToUnsigned( const char* str, unsigned *value )
{
if ( TIXML_SSCANF( str, "%u", value ) == 1 ) {
return true;
}
return false;
}
bool XMLUtil::ToBool( const char* str, bool* value )
{
int ival = 0;
if ( ToInt( str, &ival )) {
*value = (ival==0) ? false : true;
return true;
}
if ( StringEqual( str, "true" ) ) {
*value = true;
return true;
}
else if ( StringEqual( str, "false" ) ) {
*value = false;
return true;
}
return false;
}
bool XMLUtil::ToFloat( const char* str, float* value )
{
if ( TIXML_SSCANF( str, "%f", value ) == 1 ) {
return true;
}
return false;
}
bool XMLUtil::ToDouble( const char* str, double* value )
{
if ( TIXML_SSCANF( str, "%lf", value ) == 1 ) {
return true;
}
return false;
}
bool XMLUtil::ToInt64(const char* str, int64_t* value)
{
long long v = 0; // horrible syntax trick to make the compiler happy about %lld
if (TIXML_SSCANF(str, "%lld", &v) == 1) {
*value = (int64_t)v;
return true;
}
return false;
}
char* XMLDocument::Identify( char* p, XMLNode** node )
{
TIXMLASSERT( node );
TIXMLASSERT( p );
char* const start = p;
int const startLine = _parseCurLineNum;
p = XMLUtil::SkipWhiteSpace( p, &_parseCurLineNum );
if( !*p ) {
*node = 0;
TIXMLASSERT( p );
return p;
}
// These strings define the matching patterns:
static const char* xmlHeader = { "( _commentPool );
returnNode->_parseLineNum = _parseCurLineNum;
p += xmlHeaderLen;
}
else if ( XMLUtil::StringEqual( p, commentHeader, commentHeaderLen ) ) {
returnNode = CreateUnlinkedNode( _commentPool );
returnNode->_parseLineNum = _parseCurLineNum;
p += commentHeaderLen;
}
else if ( XMLUtil::StringEqual( p, cdataHeader, cdataHeaderLen ) ) {
XMLText* text = CreateUnlinkedNode( _textPool );
returnNode = text;
returnNode->_parseLineNum = _parseCurLineNum;
p += cdataHeaderLen;
text->SetCData( true );
}
else if ( XMLUtil::StringEqual( p, dtdHeader, dtdHeaderLen ) ) {
returnNode = CreateUnlinkedNode( _commentPool );
returnNode->_parseLineNum = _parseCurLineNum;
p += dtdHeaderLen;
}
else if ( XMLUtil::StringEqual( p, elementHeader, elementHeaderLen ) ) {
returnNode = CreateUnlinkedNode( _elementPool );
returnNode->_parseLineNum = _parseCurLineNum;
p += elementHeaderLen;
}
else {
returnNode = CreateUnlinkedNode( _textPool );
returnNode->_parseLineNum = _parseCurLineNum; // Report line of first non-whitespace character
p = start; // Back it up, all the text counts.
_parseCurLineNum = startLine;
}
TIXMLASSERT( returnNode );
TIXMLASSERT( p );
*node = returnNode;
return p;
}
bool XMLDocument::Accept( XMLVisitor* visitor ) const
{
TIXMLASSERT( visitor );
if ( visitor->VisitEnter( *this ) ) {
for ( const XMLNode* node=FirstChild(); node; node=node->NextSibling() ) {
if ( !node->Accept( visitor ) ) {
break;
}
}
}
return visitor->VisitExit( *this );
}
// --------- XMLNode ----------- //
XMLNode::XMLNode( XMLDocument* doc ) :
_document( doc ),
_parent( 0 ),
_value(),
_parseLineNum( 0 ),
_firstChild( 0 ), _lastChild( 0 ),
_prev( 0 ), _next( 0 ),
_userData( 0 ),
_memPool( 0 )
{
}
XMLNode::~XMLNode()
{
DeleteChildren();
if ( _parent ) {
_parent->Unlink( this );
}
}
const char* XMLNode::Value() const
{
// Edge case: XMLDocuments don't have a Value. Return null.
if ( this->ToDocument() )
return 0;
return _value.GetStr();
}
void XMLNode::SetValue( const char* str, bool staticMem )
{
if ( staticMem ) {
_value.SetInternedStr( str );
}
else {
_value.SetStr( str );
}
}
XMLNode* XMLNode::DeepClone(XMLDocument* target) const
{
XMLNode* clone = this->ShallowClone(target);
if (!clone) return 0;
for (const XMLNode* child = this->FirstChild(); child; child = child->NextSibling()) {
XMLNode* childClone = child->DeepClone(target);
TIXMLASSERT(childClone);
clone->InsertEndChild(childClone);
}
return clone;
}
void XMLNode::DeleteChildren()
{
while( _firstChild ) {
TIXMLASSERT( _lastChild );
DeleteChild( _firstChild );
}
_firstChild = _lastChild = 0;
}
void XMLNode::Unlink( XMLNode* child )
{
TIXMLASSERT( child );
TIXMLASSERT( child->_document == _document );
TIXMLASSERT( child->_parent == this );
if ( child == _firstChild ) {
_firstChild = _firstChild->_next;
}
if ( child == _lastChild ) {
_lastChild = _lastChild->_prev;
}
if ( child->_prev ) {
child->_prev->_next = child->_next;
}
if ( child->_next ) {
child->_next->_prev = child->_prev;
}
child->_next = 0;
child->_prev = 0;
child->_parent = 0;
}
void XMLNode::DeleteChild( XMLNode* node )
{
TIXMLASSERT( node );
TIXMLASSERT( node->_document == _document );
TIXMLASSERT( node->_parent == this );
Unlink( node );
TIXMLASSERT(node->_prev == 0);
TIXMLASSERT(node->_next == 0);
TIXMLASSERT(node->_parent == 0);
DeleteNode( node );
}
XMLNode* XMLNode::InsertEndChild( XMLNode* addThis )
{
TIXMLASSERT( addThis );
if ( addThis->_document != _document ) {
TIXMLASSERT( false );
return 0;
}
InsertChildPreamble( addThis );
if ( _lastChild ) {
TIXMLASSERT( _firstChild );
TIXMLASSERT( _lastChild->_next == 0 );
_lastChild->_next = addThis;
addThis->_prev = _lastChild;
_lastChild = addThis;
addThis->_next = 0;
}
else {
TIXMLASSERT( _firstChild == 0 );
_firstChild = _lastChild = addThis;
addThis->_prev = 0;
addThis->_next = 0;
}
addThis->_parent = this;
return addThis;
}
XMLNode* XMLNode::InsertFirstChild( XMLNode* addThis )
{
TIXMLASSERT( addThis );
if ( addThis->_document != _document ) {
TIXMLASSERT( false );
return 0;
}
InsertChildPreamble( addThis );
if ( _firstChild ) {
TIXMLASSERT( _lastChild );
TIXMLASSERT( _firstChild->_prev == 0 );
_firstChild->_prev = addThis;
addThis->_next = _firstChild;
_firstChild = addThis;
addThis->_prev = 0;
}
else {
TIXMLASSERT( _lastChild == 0 );
_firstChild = _lastChild = addThis;
addThis->_prev = 0;
addThis->_next = 0;
}
addThis->_parent = this;
return addThis;
}
XMLNode* XMLNode::InsertAfterChild( XMLNode* afterThis, XMLNode* addThis )
{
TIXMLASSERT( addThis );
if ( addThis->_document != _document ) {
TIXMLASSERT( false );
return 0;
}
TIXMLASSERT( afterThis );
if ( afterThis->_parent != this ) {
TIXMLASSERT( false );
return 0;
}
if ( afterThis == addThis ) {
// Current state: BeforeThis -> AddThis -> OneAfterAddThis
// Now AddThis must disappear from it's location and then
// reappear between BeforeThis and OneAfterAddThis.
// So just leave it where it is.
return addThis;
}
if ( afterThis->_next == 0 ) {
// The last node or the only node.
return InsertEndChild( addThis );
}
InsertChildPreamble( addThis );
addThis->_prev = afterThis;
addThis->_next = afterThis->_next;
afterThis->_next->_prev = addThis;
afterThis->_next = addThis;
addThis->_parent = this;
return addThis;
}
const XMLElement* XMLNode::FirstChildElement( const char* name ) const
{
for( const XMLNode* node = _firstChild; node; node = node->_next ) {
const XMLElement* element = node->ToElementWithName( name );
if ( element ) {
return element;
}
}
return 0;
}
const XMLElement* XMLNode::LastChildElement( const char* name ) const
{
for( const XMLNode* node = _lastChild; node; node = node->_prev ) {
const XMLElement* element = node->ToElementWithName( name );
if ( element ) {
return element;
}
}
return 0;
}
const XMLElement* XMLNode::NextSiblingElement( const char* name ) const
{
for( const XMLNode* node = _next; node; node = node->_next ) {
const XMLElement* element = node->ToElementWithName( name );
if ( element ) {
return element;
}
}
return 0;
}
const XMLElement* XMLNode::PreviousSiblingElement( const char* name ) const
{
for( const XMLNode* node = _prev; node; node = node->_prev ) {
const XMLElement* element = node->ToElementWithName( name );
if ( element ) {
return element;
}
}
return 0;
}
char* XMLNode::ParseDeep( char* p, StrPair* parentEndTag, int* curLineNumPtr )
{
// This is a recursive method, but thinking about it "at the current level"
// it is a pretty simple flat list:
//
//
//
// With a special case:
//
//
//
//
// Where the closing element (/foo) *must* be the next thing after the opening
// element, and the names must match. BUT the tricky bit is that the closing
// element will be read by the child.
//
// 'endTag' is the end tag for this node, it is returned by a call to a child.
// 'parentEnd' is the end tag for the parent, which is filled in and returned.
XMLDocument::DepthTracker tracker(_document);
if (_document->Error())
return 0;
while( p && *p ) {
XMLNode* node = 0;
p = _document->Identify( p, &node );
TIXMLASSERT( p );
if ( node == 0 ) {
break;
}
int initialLineNum = node->_parseLineNum;
StrPair endTag;
p = node->ParseDeep( p, &endTag, curLineNumPtr );
if ( !p ) {
DeleteNode( node );
if ( !_document->Error() ) {
_document->SetError( XML_ERROR_PARSING, initialLineNum, 0);
}
break;
}
XMLDeclaration* decl = node->ToDeclaration();
if ( decl ) {
// Declarations are only allowed at document level
bool wellLocated = ( ToDocument() != 0 );
if ( wellLocated ) {
// Multiple declarations are allowed but all declarations
// must occur before anything else
for ( const XMLNode* existingNode = _document->FirstChild(); existingNode; existingNode = existingNode->NextSibling() ) {
if ( !existingNode->ToDeclaration() ) {
wellLocated = false;
break;
}
}
}
if ( !wellLocated ) {
_document->SetError( XML_ERROR_PARSING_DECLARATION, initialLineNum, "XMLDeclaration value=%s", decl->Value());
DeleteNode( node );
break;
}
}
XMLElement* ele = node->ToElement();
if ( ele ) {
// We read the end tag. Return it to the parent.
if ( ele->ClosingType() == XMLElement::CLOSING ) {
if ( parentEndTag ) {
ele->_value.TransferTo( parentEndTag );
}
node->_memPool->SetTracked(); // created and then immediately deleted.
DeleteNode( node );
return p;
}
// Handle an end tag returned to this level.
// And handle a bunch of annoying errors.
bool mismatch = false;
if ( endTag.Empty() ) {
if ( ele->ClosingType() == XMLElement::OPEN ) {
mismatch = true;
}
}
else {
if ( ele->ClosingType() != XMLElement::OPEN ) {
mismatch = true;
}
else if ( !XMLUtil::StringEqual( endTag.GetStr(), ele->Name() ) ) {
mismatch = true;
}
}
if ( mismatch ) {
_document->SetError( XML_ERROR_MISMATCHED_ELEMENT, initialLineNum, "XMLElement name=%s", ele->Name());
DeleteNode( node );
break;
}
}
InsertEndChild( node );
}
return 0;
}
/*static*/ void XMLNode::DeleteNode( XMLNode* node )
{
if ( node == 0 ) {
return;
}
TIXMLASSERT(node->_document);
if (!node->ToDocument()) {
node->_document->MarkInUse(node);
}
MemPool* pool = node->_memPool;
node->~XMLNode();
pool->Free( node );
}
void XMLNode::InsertChildPreamble( XMLNode* insertThis ) const
{
TIXMLASSERT( insertThis );
TIXMLASSERT( insertThis->_document == _document );
if (insertThis->_parent) {
insertThis->_parent->Unlink( insertThis );
}
else {
insertThis->_document->MarkInUse(insertThis);
insertThis->_memPool->SetTracked();
}
}
const XMLElement* XMLNode::ToElementWithName( const char* name ) const
{
const XMLElement* element = this->ToElement();
if ( element == 0 ) {
return 0;
}
if ( name == 0 ) {
return element;
}
if ( XMLUtil::StringEqual( element->Name(), name ) ) {
return element;
}
return 0;
}
// --------- XMLText ---------- //
char* XMLText::ParseDeep( char* p, StrPair*, int* curLineNumPtr )
{
if ( this->CData() ) {
p = _value.ParseText( p, "]]>", StrPair::NEEDS_NEWLINE_NORMALIZATION, curLineNumPtr );
if ( !p ) {
_document->SetError( XML_ERROR_PARSING_CDATA, _parseLineNum, 0 );
}
return p;
}
else {
int flags = _document->ProcessEntities() ? StrPair::TEXT_ELEMENT : StrPair::TEXT_ELEMENT_LEAVE_ENTITIES;
if ( _document->WhitespaceMode() == COLLAPSE_WHITESPACE ) {
flags |= StrPair::NEEDS_WHITESPACE_COLLAPSING;
}
p = _value.ParseText( p, "<", flags, curLineNumPtr );
if ( p && *p ) {
return p-1;
}
if ( !p ) {
_document->SetError( XML_ERROR_PARSING_TEXT, _parseLineNum, 0 );
}
}
return 0;
}
XMLNode* XMLText::ShallowClone( XMLDocument* doc ) const
{
if ( !doc ) {
doc = _document;
}
XMLText* text = doc->NewText( Value() ); // fixme: this will always allocate memory. Intern?
text->SetCData( this->CData() );
return text;
}
bool XMLText::ShallowEqual( const XMLNode* compare ) const
{
TIXMLASSERT( compare );
const XMLText* text = compare->ToText();
return ( text && XMLUtil::StringEqual( text->Value(), Value() ) );
}
bool XMLText::Accept( XMLVisitor* visitor ) const
{
TIXMLASSERT( visitor );
return visitor->Visit( *this );
}
// --------- XMLComment ---------- //
XMLComment::XMLComment( XMLDocument* doc ) : XMLNode( doc )
{
}
XMLComment::~XMLComment()
{
}
char* XMLComment::ParseDeep( char* p, StrPair*, int* curLineNumPtr )
{
// Comment parses as text.
p = _value.ParseText( p, "-->", StrPair::COMMENT, curLineNumPtr );
if ( p == 0 ) {
_document->SetError( XML_ERROR_PARSING_COMMENT, _parseLineNum, 0 );
}
return p;
}
XMLNode* XMLComment::ShallowClone( XMLDocument* doc ) const
{
if ( !doc ) {
doc = _document;
}
XMLComment* comment = doc->NewComment( Value() ); // fixme: this will always allocate memory. Intern?
return comment;
}
bool XMLComment::ShallowEqual( const XMLNode* compare ) const
{
TIXMLASSERT( compare );
const XMLComment* comment = compare->ToComment();
return ( comment && XMLUtil::StringEqual( comment->Value(), Value() ));
}
bool XMLComment::Accept( XMLVisitor* visitor ) const
{
TIXMLASSERT( visitor );
return visitor->Visit( *this );
}
// --------- XMLDeclaration ---------- //
XMLDeclaration::XMLDeclaration( XMLDocument* doc ) : XMLNode( doc )
{
}
XMLDeclaration::~XMLDeclaration()
{
//printf( "~XMLDeclaration\n" );
}
char* XMLDeclaration::ParseDeep( char* p, StrPair*, int* curLineNumPtr )
{
// Declaration parses as text.
p = _value.ParseText( p, "?>", StrPair::NEEDS_NEWLINE_NORMALIZATION, curLineNumPtr );
if ( p == 0 ) {
_document->SetError( XML_ERROR_PARSING_DECLARATION, _parseLineNum, 0 );
}
return p;
}
XMLNode* XMLDeclaration::ShallowClone( XMLDocument* doc ) const
{
if ( !doc ) {
doc = _document;
}
XMLDeclaration* dec = doc->NewDeclaration( Value() ); // fixme: this will always allocate memory. Intern?
return dec;
}
bool XMLDeclaration::ShallowEqual( const XMLNode* compare ) const
{
TIXMLASSERT( compare );
const XMLDeclaration* declaration = compare->ToDeclaration();
return ( declaration && XMLUtil::StringEqual( declaration->Value(), Value() ));
}
bool XMLDeclaration::Accept( XMLVisitor* visitor ) const
{
TIXMLASSERT( visitor );
return visitor->Visit( *this );
}
// --------- XMLUnknown ---------- //
XMLUnknown::XMLUnknown( XMLDocument* doc ) : XMLNode( doc )
{
}
XMLUnknown::~XMLUnknown()
{
}
char* XMLUnknown::ParseDeep( char* p, StrPair*, int* curLineNumPtr )
{
// Unknown parses as text.
p = _value.ParseText( p, ">", StrPair::NEEDS_NEWLINE_NORMALIZATION, curLineNumPtr );
if ( !p ) {
_document->SetError( XML_ERROR_PARSING_UNKNOWN, _parseLineNum, 0 );
}
return p;
}
XMLNode* XMLUnknown::ShallowClone( XMLDocument* doc ) const
{
if ( !doc ) {
doc = _document;
}
XMLUnknown* text = doc->NewUnknown( Value() ); // fixme: this will always allocate memory. Intern?
return text;
}
bool XMLUnknown::ShallowEqual( const XMLNode* compare ) const
{
TIXMLASSERT( compare );
const XMLUnknown* unknown = compare->ToUnknown();
return ( unknown && XMLUtil::StringEqual( unknown->Value(), Value() ));
}
bool XMLUnknown::Accept( XMLVisitor* visitor ) const
{
TIXMLASSERT( visitor );
return visitor->Visit( *this );
}
// --------- XMLAttribute ---------- //
const char* XMLAttribute::Name() const
{
return _name.GetStr();
}
const char* XMLAttribute::Value() const
{
return _value.GetStr();
}
char* XMLAttribute::ParseDeep( char* p, bool processEntities, int* curLineNumPtr )
{
// Parse using the name rules: bug fix, was using ParseText before
p = _name.ParseName( p );
if ( !p || !*p ) {
return 0;
}
// Skip white space before =
p = XMLUtil::SkipWhiteSpace( p, curLineNumPtr );
if ( *p != '=' ) {
return 0;
}
++p; // move up to opening quote
p = XMLUtil::SkipWhiteSpace( p, curLineNumPtr );
if ( *p != '\"' && *p != '\'' ) {
return 0;
}
char endTag[2] = { *p, 0 };
++p; // move past opening quote
p = _value.ParseText( p, endTag, processEntities ? StrPair::ATTRIBUTE_VALUE : StrPair::ATTRIBUTE_VALUE_LEAVE_ENTITIES, curLineNumPtr );
return p;
}
void XMLAttribute::SetName( const char* n )
{
_name.SetStr( n );
}
XMLError XMLAttribute::QueryIntValue( int* value ) const
{
if ( XMLUtil::ToInt( Value(), value )) {
return XML_SUCCESS;
}
return XML_WRONG_ATTRIBUTE_TYPE;
}
XMLError XMLAttribute::QueryUnsignedValue( unsigned int* value ) const
{
if ( XMLUtil::ToUnsigned( Value(), value )) {
return XML_SUCCESS;
}
return XML_WRONG_ATTRIBUTE_TYPE;
}
XMLError XMLAttribute::QueryInt64Value(int64_t* value) const
{
if (XMLUtil::ToInt64(Value(), value)) {
return XML_SUCCESS;
}
return XML_WRONG_ATTRIBUTE_TYPE;
}
XMLError XMLAttribute::QueryBoolValue( bool* value ) const
{
if ( XMLUtil::ToBool( Value(), value )) {
return XML_SUCCESS;
}
return XML_WRONG_ATTRIBUTE_TYPE;
}
XMLError XMLAttribute::QueryFloatValue( float* value ) const
{
if ( XMLUtil::ToFloat( Value(), value )) {
return XML_SUCCESS;
}
return XML_WRONG_ATTRIBUTE_TYPE;
}
XMLError XMLAttribute::QueryDoubleValue( double* value ) const
{
if ( XMLUtil::ToDouble( Value(), value )) {
return XML_SUCCESS;
}
return XML_WRONG_ATTRIBUTE_TYPE;
}
void XMLAttribute::SetAttribute( const char* v )
{
_value.SetStr( v );
}
void XMLAttribute::SetAttribute( int v )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( v, buf, BUF_SIZE );
_value.SetStr( buf );
}
void XMLAttribute::SetAttribute( unsigned v )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( v, buf, BUF_SIZE );
_value.SetStr( buf );
}
void XMLAttribute::SetAttribute(int64_t v)
{
char buf[BUF_SIZE];
XMLUtil::ToStr(v, buf, BUF_SIZE);
_value.SetStr(buf);
}
void XMLAttribute::SetAttribute( bool v )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( v, buf, BUF_SIZE );
_value.SetStr( buf );
}
void XMLAttribute::SetAttribute( double v )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( v, buf, BUF_SIZE );
_value.SetStr( buf );
}
void XMLAttribute::SetAttribute( float v )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( v, buf, BUF_SIZE );
_value.SetStr( buf );
}
// --------- XMLElement ---------- //
XMLElement::XMLElement( XMLDocument* doc ) : XMLNode( doc ),
_closingType( OPEN ),
_rootAttribute( 0 )
{
}
XMLElement::~XMLElement()
{
while( _rootAttribute ) {
XMLAttribute* next = _rootAttribute->_next;
DeleteAttribute( _rootAttribute );
_rootAttribute = next;
}
}
const XMLAttribute* XMLElement::FindAttribute( const char* name ) const
{
for( XMLAttribute* a = _rootAttribute; a; a = a->_next ) {
if ( XMLUtil::StringEqual( a->Name(), name ) ) {
return a;
}
}
return 0;
}
const char* XMLElement::Attribute( const char* name, const char* value ) const
{
const XMLAttribute* a = FindAttribute( name );
if ( !a ) {
return 0;
}
if ( !value || XMLUtil::StringEqual( a->Value(), value )) {
return a->Value();
}
return 0;
}
int XMLElement::IntAttribute(const char* name, int defaultValue) const
{
int i = defaultValue;
QueryIntAttribute(name, &i);
return i;
}
unsigned XMLElement::UnsignedAttribute(const char* name, unsigned defaultValue) const
{
unsigned i = defaultValue;
QueryUnsignedAttribute(name, &i);
return i;
}
int64_t XMLElement::Int64Attribute(const char* name, int64_t defaultValue) const
{
int64_t i = defaultValue;
QueryInt64Attribute(name, &i);
return i;
}
bool XMLElement::BoolAttribute(const char* name, bool defaultValue) const
{
bool b = defaultValue;
QueryBoolAttribute(name, &b);
return b;
}
double XMLElement::DoubleAttribute(const char* name, double defaultValue) const
{
double d = defaultValue;
QueryDoubleAttribute(name, &d);
return d;
}
float XMLElement::FloatAttribute(const char* name, float defaultValue) const
{
float f = defaultValue;
QueryFloatAttribute(name, &f);
return f;
}
const char* XMLElement::GetText() const
{
if ( FirstChild() && FirstChild()->ToText() ) {
return FirstChild()->Value();
}
return 0;
}
void XMLElement::SetText( const char* inText )
{
if ( FirstChild() && FirstChild()->ToText() )
FirstChild()->SetValue( inText );
else {
XMLText* theText = GetDocument()->NewText( inText );
InsertFirstChild( theText );
}
}
void XMLElement::SetText( int v )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( v, buf, BUF_SIZE );
SetText( buf );
}
void XMLElement::SetText( unsigned v )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( v, buf, BUF_SIZE );
SetText( buf );
}
void XMLElement::SetText(int64_t v)
{
char buf[BUF_SIZE];
XMLUtil::ToStr(v, buf, BUF_SIZE);
SetText(buf);
}
void XMLElement::SetText( bool v )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( v, buf, BUF_SIZE );
SetText( buf );
}
void XMLElement::SetText( float v )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( v, buf, BUF_SIZE );
SetText( buf );
}
void XMLElement::SetText( double v )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( v, buf, BUF_SIZE );
SetText( buf );
}
XMLError XMLElement::QueryIntText( int* ival ) const
{
if ( FirstChild() && FirstChild()->ToText() ) {
const char* t = FirstChild()->Value();
if ( XMLUtil::ToInt( t, ival ) ) {
return XML_SUCCESS;
}
return XML_CAN_NOT_CONVERT_TEXT;
}
return XML_NO_TEXT_NODE;
}
XMLError XMLElement::QueryUnsignedText( unsigned* uval ) const
{
if ( FirstChild() && FirstChild()->ToText() ) {
const char* t = FirstChild()->Value();
if ( XMLUtil::ToUnsigned( t, uval ) ) {
return XML_SUCCESS;
}
return XML_CAN_NOT_CONVERT_TEXT;
}
return XML_NO_TEXT_NODE;
}
XMLError XMLElement::QueryInt64Text(int64_t* ival) const
{
if (FirstChild() && FirstChild()->ToText()) {
const char* t = FirstChild()->Value();
if (XMLUtil::ToInt64(t, ival)) {
return XML_SUCCESS;
}
return XML_CAN_NOT_CONVERT_TEXT;
}
return XML_NO_TEXT_NODE;
}
XMLError XMLElement::QueryBoolText( bool* bval ) const
{
if ( FirstChild() && FirstChild()->ToText() ) {
const char* t = FirstChild()->Value();
if ( XMLUtil::ToBool( t, bval ) ) {
return XML_SUCCESS;
}
return XML_CAN_NOT_CONVERT_TEXT;
}
return XML_NO_TEXT_NODE;
}
XMLError XMLElement::QueryDoubleText( double* dval ) const
{
if ( FirstChild() && FirstChild()->ToText() ) {
const char* t = FirstChild()->Value();
if ( XMLUtil::ToDouble( t, dval ) ) {
return XML_SUCCESS;
}
return XML_CAN_NOT_CONVERT_TEXT;
}
return XML_NO_TEXT_NODE;
}
XMLError XMLElement::QueryFloatText( float* fval ) const
{
if ( FirstChild() && FirstChild()->ToText() ) {
const char* t = FirstChild()->Value();
if ( XMLUtil::ToFloat( t, fval ) ) {
return XML_SUCCESS;
}
return XML_CAN_NOT_CONVERT_TEXT;
}
return XML_NO_TEXT_NODE;
}
int XMLElement::IntText(int defaultValue) const
{
int i = defaultValue;
QueryIntText(&i);
return i;
}
unsigned XMLElement::UnsignedText(unsigned defaultValue) const
{
unsigned i = defaultValue;
QueryUnsignedText(&i);
return i;
}
int64_t XMLElement::Int64Text(int64_t defaultValue) const
{
int64_t i = defaultValue;
QueryInt64Text(&i);
return i;
}
bool XMLElement::BoolText(bool defaultValue) const
{
bool b = defaultValue;
QueryBoolText(&b);
return b;
}
double XMLElement::DoubleText(double defaultValue) const
{
double d = defaultValue;
QueryDoubleText(&d);
return d;
}
float XMLElement::FloatText(float defaultValue) const
{
float f = defaultValue;
QueryFloatText(&f);
return f;
}
XMLAttribute* XMLElement::FindOrCreateAttribute( const char* name )
{
XMLAttribute* last = 0;
XMLAttribute* attrib = 0;
for( attrib = _rootAttribute;
attrib;
last = attrib, attrib = attrib->_next ) {
if ( XMLUtil::StringEqual( attrib->Name(), name ) ) {
break;
}
}
if ( !attrib ) {
attrib = CreateAttribute();
TIXMLASSERT( attrib );
if ( last ) {
TIXMLASSERT( last->_next == 0 );
last->_next = attrib;
}
else {
TIXMLASSERT( _rootAttribute == 0 );
_rootAttribute = attrib;
}
attrib->SetName( name );
}
return attrib;
}
void XMLElement::DeleteAttribute( const char* name )
{
XMLAttribute* prev = 0;
for( XMLAttribute* a=_rootAttribute; a; a=a->_next ) {
if ( XMLUtil::StringEqual( name, a->Name() ) ) {
if ( prev ) {
prev->_next = a->_next;
}
else {
_rootAttribute = a->_next;
}
DeleteAttribute( a );
break;
}
prev = a;
}
}
char* XMLElement::ParseAttributes( char* p, int* curLineNumPtr )
{
XMLAttribute* prevAttribute = 0;
// Read the attributes.
while( p ) {
p = XMLUtil::SkipWhiteSpace( p, curLineNumPtr );
if ( !(*p) ) {
_document->SetError( XML_ERROR_PARSING_ELEMENT, _parseLineNum, "XMLElement name=%s", Name() );
return 0;
}
// attribute.
if (XMLUtil::IsNameStartChar( *p ) ) {
XMLAttribute* attrib = CreateAttribute();
TIXMLASSERT( attrib );
attrib->_parseLineNum = _document->_parseCurLineNum;
int attrLineNum = attrib->_parseLineNum;
p = attrib->ParseDeep( p, _document->ProcessEntities(), curLineNumPtr );
if ( !p || Attribute( attrib->Name() ) ) {
DeleteAttribute( attrib );
_document->SetError( XML_ERROR_PARSING_ATTRIBUTE, attrLineNum, "XMLElement name=%s", Name() );
return 0;
}
// There is a minor bug here: if the attribute in the source xml
// document is duplicated, it will not be detected and the
// attribute will be doubly added. However, tracking the 'prevAttribute'
// avoids re-scanning the attribute list. Preferring performance for
// now, may reconsider in the future.
if ( prevAttribute ) {
TIXMLASSERT( prevAttribute->_next == 0 );
prevAttribute->_next = attrib;
}
else {
TIXMLASSERT( _rootAttribute == 0 );
_rootAttribute = attrib;
}
prevAttribute = attrib;
}
// end of the tag
else if ( *p == '>' ) {
++p;
break;
}
// end of the tag
else if ( *p == '/' && *(p+1) == '>' ) {
_closingType = CLOSED;
return p+2; // done; sealed element.
}
else {
_document->SetError( XML_ERROR_PARSING_ELEMENT, _parseLineNum, 0 );
return 0;
}
}
return p;
}
void XMLElement::DeleteAttribute( XMLAttribute* attribute )
{
if ( attribute == 0 ) {
return;
}
MemPool* pool = attribute->_memPool;
attribute->~XMLAttribute();
pool->Free( attribute );
}
XMLAttribute* XMLElement::CreateAttribute()
{
TIXMLASSERT( sizeof( XMLAttribute ) == _document->_attributePool.ItemSize() );
XMLAttribute* attrib = new (_document->_attributePool.Alloc() ) XMLAttribute();
TIXMLASSERT( attrib );
attrib->_memPool = &_document->_attributePool;
attrib->_memPool->SetTracked();
return attrib;
}
//
//
// foobar
//
char* XMLElement::ParseDeep( char* p, StrPair* parentEndTag, int* curLineNumPtr )
{
// Read the element name.
p = XMLUtil::SkipWhiteSpace( p, curLineNumPtr );
// The closing element is the form. It is
// parsed just like a regular element then deleted from
// the DOM.
if ( *p == '/' ) {
_closingType = CLOSING;
++p;
}
p = _value.ParseName( p );
if ( _value.Empty() ) {
return 0;
}
p = ParseAttributes( p, curLineNumPtr );
if ( !p || !*p || _closingType != OPEN ) {
return p;
}
p = XMLNode::ParseDeep( p, parentEndTag, curLineNumPtr );
return p;
}
XMLNode* XMLElement::ShallowClone( XMLDocument* doc ) const
{
if ( !doc ) {
doc = _document;
}
XMLElement* element = doc->NewElement( Value() ); // fixme: this will always allocate memory. Intern?
for( const XMLAttribute* a=FirstAttribute(); a; a=a->Next() ) {
element->SetAttribute( a->Name(), a->Value() ); // fixme: this will always allocate memory. Intern?
}
return element;
}
bool XMLElement::ShallowEqual( const XMLNode* compare ) const
{
TIXMLASSERT( compare );
const XMLElement* other = compare->ToElement();
if ( other && XMLUtil::StringEqual( other->Name(), Name() )) {
const XMLAttribute* a=FirstAttribute();
const XMLAttribute* b=other->FirstAttribute();
while ( a && b ) {
if ( !XMLUtil::StringEqual( a->Value(), b->Value() ) ) {
return false;
}
a = a->Next();
b = b->Next();
}
if ( a || b ) {
// different count
return false;
}
return true;
}
return false;
}
bool XMLElement::Accept( XMLVisitor* visitor ) const
{
TIXMLASSERT( visitor );
if ( visitor->VisitEnter( *this, _rootAttribute ) ) {
for ( const XMLNode* node=FirstChild(); node; node=node->NextSibling() ) {
if ( !node->Accept( visitor ) ) {
break;
}
}
}
return visitor->VisitExit( *this );
}
// --------- XMLDocument ----------- //
// Warning: List must match 'enum XMLError'
const char* XMLDocument::_errorNames[XML_ERROR_COUNT] = {
"XML_SUCCESS",
"XML_NO_ATTRIBUTE",
"XML_WRONG_ATTRIBUTE_TYPE",
"XML_ERROR_FILE_NOT_FOUND",
"XML_ERROR_FILE_COULD_NOT_BE_OPENED",
"XML_ERROR_FILE_READ_ERROR",
"UNUSED_XML_ERROR_ELEMENT_MISMATCH",
"XML_ERROR_PARSING_ELEMENT",
"XML_ERROR_PARSING_ATTRIBUTE",
"UNUSED_XML_ERROR_IDENTIFYING_TAG",
"XML_ERROR_PARSING_TEXT",
"XML_ERROR_PARSING_CDATA",
"XML_ERROR_PARSING_COMMENT",
"XML_ERROR_PARSING_DECLARATION",
"XML_ERROR_PARSING_UNKNOWN",
"XML_ERROR_EMPTY_DOCUMENT",
"XML_ERROR_MISMATCHED_ELEMENT",
"XML_ERROR_PARSING",
"XML_CAN_NOT_CONVERT_TEXT",
"XML_NO_TEXT_NODE",
"XML_ELEMENT_DEPTH_EXCEEDED"
};
XMLDocument::XMLDocument( bool processEntities, Whitespace whitespaceMode ) :
XMLNode( 0 ),
_writeBOM( false ),
_processEntities( processEntities ),
_errorID(XML_SUCCESS),
_whitespaceMode( whitespaceMode ),
_errorStr(),
_errorLineNum( 0 ),
_charBuffer( 0 ),
_parseCurLineNum( 0 ),
_parsingDepth(0),
_unlinked(),
_elementPool(),
_attributePool(),
_textPool(),
_commentPool()
{
// avoid VC++ C4355 warning about 'this' in initializer list (C4355 is off by default in VS2012+)
_document = this;
}
XMLDocument::~XMLDocument()
{
Clear();
}
void XMLDocument::MarkInUse(XMLNode* node)
{
TIXMLASSERT(node);
TIXMLASSERT(node->_parent == 0);
for (int i = 0; i < _unlinked.Size(); ++i) {
if (node == _unlinked[i]) {
_unlinked.SwapRemove(i);
break;
}
}
}
void XMLDocument::Clear()
{
DeleteChildren();
while( _unlinked.Size()) {
DeleteNode(_unlinked[0]); // Will remove from _unlinked as part of delete.
}
#ifdef TINYXML2_DEBUG
const bool hadError = Error();
#endif
ClearError();
delete [] _charBuffer;
_charBuffer = 0;
_parsingDepth = 0;
#if 0
_textPool.Trace( "text" );
_elementPool.Trace( "element" );
_commentPool.Trace( "comment" );
_attributePool.Trace( "attribute" );
#endif
#ifdef TINYXML2_DEBUG
if ( !hadError ) {
TIXMLASSERT( _elementPool.CurrentAllocs() == _elementPool.Untracked() );
TIXMLASSERT( _attributePool.CurrentAllocs() == _attributePool.Untracked() );
TIXMLASSERT( _textPool.CurrentAllocs() == _textPool.Untracked() );
TIXMLASSERT( _commentPool.CurrentAllocs() == _commentPool.Untracked() );
}
#endif
}
void XMLDocument::DeepCopy(XMLDocument* target) const
{
TIXMLASSERT(target);
if (target == this) {
return; // technically success - a no-op.
}
target->Clear();
for (const XMLNode* node = this->FirstChild(); node; node = node->NextSibling()) {
target->InsertEndChild(node->DeepClone(target));
}
}
XMLElement* XMLDocument::NewElement( const char* name )
{
XMLElement* ele = CreateUnlinkedNode( _elementPool );
ele->SetName( name );
return ele;
}
XMLComment* XMLDocument::NewComment( const char* str )
{
XMLComment* comment = CreateUnlinkedNode( _commentPool );
comment->SetValue( str );
return comment;
}
XMLText* XMLDocument::NewText( const char* str )
{
XMLText* text = CreateUnlinkedNode( _textPool );
text->SetValue( str );
return text;
}
XMLDeclaration* XMLDocument::NewDeclaration( const char* str )
{
XMLDeclaration* dec = CreateUnlinkedNode( _commentPool );
dec->SetValue( str ? str : "xml version=\"1.0\" encoding=\"UTF-8\"" );
return dec;
}
XMLUnknown* XMLDocument::NewUnknown( const char* str )
{
XMLUnknown* unk = CreateUnlinkedNode( _commentPool );
unk->SetValue( str );
return unk;
}
static FILE* callfopen( const char* filepath, const char* mode )
{
TIXMLASSERT( filepath );
TIXMLASSERT( mode );
#if defined(_MSC_VER) && (_MSC_VER >= 1400 ) && (!defined WINCE)
FILE* fp = 0;
errno_t err = fopen_s( &fp, filepath, mode );
if ( err ) {
return 0;
}
#else
FILE* fp = fopen( filepath, mode );
#endif
return fp;
}
void XMLDocument::DeleteNode( XMLNode* node ) {
TIXMLASSERT( node );
TIXMLASSERT(node->_document == this );
if (node->_parent) {
node->_parent->DeleteChild( node );
}
else {
// Isn't in the tree.
// Use the parent delete.
// Also, we need to mark it tracked: we 'know'
// it was never used.
node->_memPool->SetTracked();
// Call the static XMLNode version:
XMLNode::DeleteNode(node);
}
}
XMLError XMLDocument::LoadFile( const char* filename )
{
if ( !filename ) {
TIXMLASSERT( false );
SetError( XML_ERROR_FILE_COULD_NOT_BE_OPENED, 0, "filename=" );
return _errorID;
}
Clear();
FILE* fp = callfopen( filename, "rb" );
if ( !fp ) {
SetError( XML_ERROR_FILE_NOT_FOUND, 0, "filename=%s", filename );
return _errorID;
}
LoadFile( fp );
fclose( fp );
return _errorID;
}
// This is likely overengineered template art to have a check that unsigned long value incremented
// by one still fits into size_t. If size_t type is larger than unsigned long type
// (x86_64-w64-mingw32 target) then the check is redundant and gcc and clang emit
// -Wtype-limits warning. This piece makes the compiler select code with a check when a check
// is useful and code with no check when a check is redundant depending on how size_t and unsigned long
// types sizes relate to each other.
template
= sizeof(size_t))>
struct LongFitsIntoSizeTMinusOne {
static bool Fits( unsigned long value )
{
return value < (size_t)-1;
}
};
template <>
struct LongFitsIntoSizeTMinusOne {
static bool Fits( unsigned long )
{
return true;
}
};
XMLError XMLDocument::LoadFile( FILE* fp )
{
Clear();
fseek( fp, 0, SEEK_SET );
if ( fgetc( fp ) == EOF && ferror( fp ) != 0 ) {
SetError( XML_ERROR_FILE_READ_ERROR, 0, 0 );
return _errorID;
}
fseek( fp, 0, SEEK_END );
const long filelength = ftell( fp );
fseek( fp, 0, SEEK_SET );
if ( filelength == -1L ) {
SetError( XML_ERROR_FILE_READ_ERROR, 0, 0 );
return _errorID;
}
TIXMLASSERT( filelength >= 0 );
if ( !LongFitsIntoSizeTMinusOne<>::Fits( filelength ) ) {
// Cannot handle files which won't fit in buffer together with null terminator
SetError( XML_ERROR_FILE_READ_ERROR, 0, 0 );
return _errorID;
}
if ( filelength == 0 ) {
SetError( XML_ERROR_EMPTY_DOCUMENT, 0, 0 );
return _errorID;
}
const size_t size = filelength;
TIXMLASSERT( _charBuffer == 0 );
_charBuffer = new char[size+1];
size_t read = fread( _charBuffer, 1, size, fp );
if ( read != size ) {
SetError( XML_ERROR_FILE_READ_ERROR, 0, 0 );
return _errorID;
}
_charBuffer[size] = 0;
Parse();
return _errorID;
}
XMLError XMLDocument::SaveFile( const char* filename, bool compact )
{
if ( !filename ) {
TIXMLASSERT( false );
SetError( XML_ERROR_FILE_COULD_NOT_BE_OPENED, 0, "filename=" );
return _errorID;
}
FILE* fp = callfopen( filename, "w" );
if ( !fp ) {
SetError( XML_ERROR_FILE_COULD_NOT_BE_OPENED, 0, "filename=%s", filename );
return _errorID;
}
SaveFile(fp, compact);
fclose( fp );
return _errorID;
}
XMLError XMLDocument::SaveFile( FILE* fp, bool compact )
{
// Clear any error from the last save, otherwise it will get reported
// for *this* call.
ClearError();
XMLPrinter stream( fp, compact );
Print( &stream );
return _errorID;
}
XMLError XMLDocument::Parse( const char* p, size_t len )
{
Clear();
if ( len == 0 || !p || !*p ) {
SetError( XML_ERROR_EMPTY_DOCUMENT, 0, 0 );
return _errorID;
}
if ( len == (size_t)(-1) ) {
len = strlen( p );
}
TIXMLASSERT( _charBuffer == 0 );
_charBuffer = new char[ len+1 ];
memcpy( _charBuffer, p, len );
_charBuffer[len] = 0;
Parse();
if ( Error() ) {
// clean up now essentially dangling memory.
// and the parse fail can put objects in the
// pools that are dead and inaccessible.
DeleteChildren();
_elementPool.Clear();
_attributePool.Clear();
_textPool.Clear();
_commentPool.Clear();
}
return _errorID;
}
void XMLDocument::Print( XMLPrinter* streamer ) const
{
if ( streamer ) {
Accept( streamer );
}
else {
XMLPrinter stdoutStreamer( stdout );
Accept( &stdoutStreamer );
}
}
void XMLDocument::SetError( XMLError error, int lineNum, const char* format, ... )
{
TIXMLASSERT( error >= 0 && error < XML_ERROR_COUNT );
_errorID = error;
_errorLineNum = lineNum;
_errorStr.Reset();
size_t BUFFER_SIZE = 1000;
char* buffer = new char[BUFFER_SIZE];
TIXML_SNPRINTF(buffer, BUFFER_SIZE, "Error=%s ErrorID=%d (0x%x) Line number=%d", ErrorIDToName(error), int(error), int(error), lineNum);
if (format) {
size_t len = strlen(buffer);
TIXML_SNPRINTF(buffer + len, BUFFER_SIZE - len, ": ");
len = strlen(buffer);
va_list va;
va_start(va, format);
TIXML_VSNPRINTF(buffer + len, BUFFER_SIZE - len, format, va);
va_end(va);
}
_errorStr.SetStr(buffer);
delete[] buffer;
}
/*static*/ const char* XMLDocument::ErrorIDToName(XMLError errorID)
{
TIXMLASSERT( errorID >= 0 && errorID < XML_ERROR_COUNT );
const char* errorName = _errorNames[errorID];
TIXMLASSERT( errorName && errorName[0] );
return errorName;
}
const char* XMLDocument::ErrorStr() const
{
return _errorStr.Empty() ? "" : _errorStr.GetStr();
}
void XMLDocument::PrintError() const
{
printf("%s\n", ErrorStr());
}
const char* XMLDocument::ErrorName() const
{
return ErrorIDToName(_errorID);
}
void XMLDocument::Parse()
{
TIXMLASSERT( NoChildren() ); // Clear() must have been called previously
TIXMLASSERT( _charBuffer );
_parseCurLineNum = 1;
_parseLineNum = 1;
char* p = _charBuffer;
p = XMLUtil::SkipWhiteSpace( p, &_parseCurLineNum );
p = const_cast( XMLUtil::ReadBOM( p, &_writeBOM ) );
if ( !*p ) {
SetError( XML_ERROR_EMPTY_DOCUMENT, 0, 0 );
return;
}
ParseDeep(p, 0, &_parseCurLineNum );
}
void XMLDocument::PushDepth()
{
_parsingDepth++;
if (_parsingDepth == TINYXML2_MAX_ELEMENT_DEPTH) {
SetError(XML_ELEMENT_DEPTH_EXCEEDED, _parseCurLineNum, "Element nesting is too deep." );
}
}
void XMLDocument::PopDepth()
{
TIXMLASSERT(_parsingDepth > 0);
--_parsingDepth;
}
XMLPrinter::XMLPrinter( FILE* file, bool compact, int depth ) :
_elementJustOpened( false ),
_stack(),
_firstElement( true ),
_fp( file ),
_depth( depth ),
_textDepth( -1 ),
_processEntities( true ),
_compactMode( compact ),
_buffer()
{
for( int i=0; i'] = true; // not required, but consistency is nice
_buffer.Push( 0 );
}
void XMLPrinter::Print( const char* format, ... )
{
va_list va;
va_start( va, format );
if ( _fp ) {
vfprintf( _fp, format, va );
}
else {
const int len = TIXML_VSCPRINTF( format, va );
// Close out and re-start the va-args
va_end( va );
TIXMLASSERT( len >= 0 );
va_start( va, format );
TIXMLASSERT( _buffer.Size() > 0 && _buffer[_buffer.Size() - 1] == 0 );
char* p = _buffer.PushArr( len ) - 1; // back up over the null terminator.
TIXML_VSNPRINTF( p, len+1, format, va );
}
va_end( va );
}
void XMLPrinter::Write( const char* data, size_t size )
{
if ( _fp ) {
fwrite ( data , sizeof(char), size, _fp);
}
else {
char* p = _buffer.PushArr( static_cast(size) ) - 1; // back up over the null terminator.
memcpy( p, data, size );
p[size] = 0;
}
}
void XMLPrinter::Putc( char ch )
{
if ( _fp ) {
fputc ( ch, _fp);
}
else {
char* p = _buffer.PushArr( sizeof(char) ) - 1; // back up over the null terminator.
p[0] = ch;
p[1] = 0;
}
}
void XMLPrinter::PrintSpace( int depth )
{
for( int i=0; i 0 && *q < ENTITY_RANGE ) {
// Check for entities. If one is found, flush
// the stream up until the entity, write the
// entity, and keep looking.
if ( flag[(unsigned char)(*q)] ) {
while ( p < q ) {
const size_t delta = q - p;
const int toPrint = ( INT_MAX < delta ) ? INT_MAX : (int)delta;
Write( p, toPrint );
p += toPrint;
}
bool entityPatternPrinted = false;
for( int i=0; i( bom ) );
}
if ( writeDec ) {
PushDeclaration( "xml version=\"1.0\"" );
}
}
void XMLPrinter::OpenElement( const char* name, bool compactMode )
{
SealElementIfJustOpened();
_stack.Push( name );
if ( _textDepth < 0 && !_firstElement && !compactMode ) {
Putc( '\n' );
}
if ( !compactMode ) {
PrintSpace( _depth );
}
Write ( "<" );
Write ( name );
_elementJustOpened = true;
_firstElement = false;
++_depth;
}
void XMLPrinter::PushAttribute( const char* name, const char* value )
{
TIXMLASSERT( _elementJustOpened );
Putc ( ' ' );
Write( name );
Write( "=\"" );
PrintString( value, false );
Putc ( '\"' );
}
void XMLPrinter::PushAttribute( const char* name, int v )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( v, buf, BUF_SIZE );
PushAttribute( name, buf );
}
void XMLPrinter::PushAttribute( const char* name, unsigned v )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( v, buf, BUF_SIZE );
PushAttribute( name, buf );
}
void XMLPrinter::PushAttribute(const char* name, int64_t v)
{
char buf[BUF_SIZE];
XMLUtil::ToStr(v, buf, BUF_SIZE);
PushAttribute(name, buf);
}
void XMLPrinter::PushAttribute( const char* name, bool v )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( v, buf, BUF_SIZE );
PushAttribute( name, buf );
}
void XMLPrinter::PushAttribute( const char* name, double v )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( v, buf, BUF_SIZE );
PushAttribute( name, buf );
}
void XMLPrinter::CloseElement( bool compactMode )
{
--_depth;
const char* name = _stack.Pop();
if ( _elementJustOpened ) {
Write( "/>" );
}
else {
if ( _textDepth < 0 && !compactMode) {
Putc( '\n' );
PrintSpace( _depth );
}
Write ( "" );
}
if ( _textDepth == _depth ) {
_textDepth = -1;
}
if ( _depth == 0 && !compactMode) {
Putc( '\n' );
}
_elementJustOpened = false;
}
void XMLPrinter::SealElementIfJustOpened()
{
if ( !_elementJustOpened ) {
return;
}
_elementJustOpened = false;
Putc( '>' );
}
void XMLPrinter::PushText( const char* text, bool cdata )
{
_textDepth = _depth-1;
SealElementIfJustOpened();
if ( cdata ) {
Write( "" );
}
else {
PrintString( text, true );
}
}
void XMLPrinter::PushText( int64_t value )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( value, buf, BUF_SIZE );
PushText( buf, false );
}
void XMLPrinter::PushText( int value )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( value, buf, BUF_SIZE );
PushText( buf, false );
}
void XMLPrinter::PushText( unsigned value )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( value, buf, BUF_SIZE );
PushText( buf, false );
}
void XMLPrinter::PushText( bool value )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( value, buf, BUF_SIZE );
PushText( buf, false );
}
void XMLPrinter::PushText( float value )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( value, buf, BUF_SIZE );
PushText( buf, false );
}
void XMLPrinter::PushText( double value )
{
char buf[BUF_SIZE];
XMLUtil::ToStr( value, buf, BUF_SIZE );
PushText( buf, false );
}
void XMLPrinter::PushComment( const char* comment )
{
SealElementIfJustOpened();
if ( _textDepth < 0 && !_firstElement && !_compactMode) {
Putc( '\n' );
PrintSpace( _depth );
}
_firstElement = false;
Write( "" );
}
void XMLPrinter::PushDeclaration( const char* value )
{
SealElementIfJustOpened();
if ( _textDepth < 0 && !_firstElement && !_compactMode) {
Putc( '\n' );
PrintSpace( _depth );
}
_firstElement = false;
Write( "" );
}
void XMLPrinter::PushUnknown( const char* value )
{
SealElementIfJustOpened();
if ( _textDepth < 0 && !_firstElement && !_compactMode) {
Putc( '\n' );
PrintSpace( _depth );
}
_firstElement = false;
Write( "' );
}
bool XMLPrinter::VisitEnter( const XMLDocument& doc )
{
_processEntities = doc.ProcessEntities();
if ( doc.HasBOM() ) {
PushHeader( true, false );
}
return true;
}
bool XMLPrinter::VisitEnter( const XMLElement& element, const XMLAttribute* attribute )
{
const XMLElement* parentElem = 0;
if ( element.Parent() ) {
parentElem = element.Parent()->ToElement();
}
const bool compactMode = parentElem ? CompactMode( *parentElem ) : _compactMode;
OpenElement( element.Name(), compactMode );
while ( attribute ) {
PushAttribute( attribute->Name(), attribute->Value() );
attribute = attribute->Next();
}
return true;
}
bool XMLPrinter::VisitExit( const XMLElement& element )
{
CloseElement( CompactMode(element) );
return true;
}
bool XMLPrinter::Visit( const XMLText& text )
{
PushText( text.Value(), text.CData() );
return true;
}
bool XMLPrinter::Visit( const XMLComment& comment )
{
PushComment( comment.Value() );
return true;
}
bool XMLPrinter::Visit( const XMLDeclaration& declaration )
{
PushDeclaration( declaration.Value() );
return true;
}
bool XMLPrinter::Visit( const XMLUnknown& unknown )
{
PushUnknown( unknown.Value() );
return true;
}
} // namespace tinyxml2
main.cpp #include "Component.h"
#include "Composite.h"
#include "Leaf.h"
#include
#include
#include
#include "Export.h"
#include "ExportImp.h"
using namespace std;
int main(int argc, char* argv[])
{
vector str;
Composite *com = new Composite();
string path = "D:\\cc软件";
com->Operation(path,str);
TextExportImp* textexportimp = new TextExportImp();
TextExport* textexport = new TextExport(textexportimp);
textexport->Operation(str);
DbExportImp* dbexportimp = new DbExportImp();
DbExport* dbexport = new DbExport(dbexportimp);
dbexport->Operation(str);
XmlExportImp* xmlexportimp = new XmlExportImp();
XmlExport* xmlexport = new XmlExport(xmlexportimp);
xmlexport->Operation(str);
return 0;
}
练习三 1.适配器模式设计结构图UML图: 
2.实验结果截图: 
3.代码分析(在练习二新增) Adapter.h #ifndef _ADAPTER_H_
#define _ADAPTER_H_
#include
#include
using namespace std;
class Target
{
public:
Target();
virtual ~Target();
virtual void Request(vector str);
protected:
private:
};
class Text
{
public:
Text();
~Text();
void TextToXml(vector str);
protected:
private:
};
class Adapter:public Target,private Text
{
public:
Adapter();
~Adapter();
void Request(vector str);
protected:
private:
};
#endif //~_ADAPTER_H_
Adapter.cpp #include "Adapter.h"
#include
#include "tinyxml2.h"
using namespace std;
using namespace tinyxml2;
Target::Target()
{
}
Target::~Target()
{
}
void Target::Request(vector str)
{
std::cout<<"Target::Request"< str)
{
XMLDocument *doc = new XMLDocument();
XMLDeclaration *pDel = doc->NewDeclaration("xml version=\"1.0\" encoding=\"UTF-8\"");
XMLElement* root = doc->NewElement(str[0].c_str());
doc->InsertEndChild(root);
for (int a = 0; a < str.size(); a++)
{
XMLElement * location = doc->NewElement("地址");
root->InsertEndChild(location);
XMLText *text = doc->NewText(str[a].c_str());
location->InsertEndChild(text);
}
doc->SaveFile("XMLFile.xml");
}
Adapter::Adapter()
{
}
Adapter::~Adapter()
{
}
void Adapter::Request(vector str)
{
this->TextToXml(str);
}
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