mirror of https://github.com/AxioDL/tinyxml2.git
1892 lines
55 KiB
C++
Executable File
1892 lines
55 KiB
C++
Executable File
/*
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Original code by Lee Thomason (www.grinninglizard.com)
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any
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damages arising from the use of this software.
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Permission is granted to anyone to use this software for any
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purpose, including commercial applications, and to alter it and
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redistribute it freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must
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not claim that you wrote the original software. If you use this
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software in a product, an acknowledgment in the product documentation
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would be appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and
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must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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*/
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#ifndef TINYXML2_INCLUDED
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#define TINYXML2_INCLUDED
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#ifdef ANDROID_NDK
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# include <ctype.h>
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# include <limits.h>
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# include <stdio.h>
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# include <stdlib.h>
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# include <string.h>
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# include <stdarg.h>
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#else
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# include <cctype>
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# include <climits>
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# include <cstdio>
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# include <cstdlib>
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# include <cstring>
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# include <cstdarg>
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#endif
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/*
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TODO: intern strings instead of allocation.
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*/
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/*
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gcc:
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g++ -Wall tinyxml2.cpp xmltest.cpp -o gccxmltest.exe
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Formatting, Artistic Style:
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AStyle.exe --style=1tbs --indent-switches --break-closing-brackets --indent-preprocessor tinyxml2.cpp tinyxml2.h
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*/
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#if defined( _DEBUG ) || defined( DEBUG ) || defined (__DEBUG__)
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# ifndef DEBUG
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# define DEBUG
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# endif
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#endif
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#if defined(DEBUG)
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# if defined(_MSC_VER)
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# define TIXMLASSERT( x ) if ( !(x)) { __debugbreak(); } //if ( !(x)) WinDebugBreak()
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# elif defined (ANDROID_NDK)
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# include <android/log.h>
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# define TIXMLASSERT( x ) if ( !(x)) { __android_log_assert( "assert", "grinliz", "ASSERT in '%s' at %d.", __FILE__, __LINE__ ); }
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# else
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# include <assert.h>
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# define TIXMLASSERT assert
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# endif
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# else
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# define TIXMLASSERT( x ) {}
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#endif
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#if defined(_MSC_VER) && (_MSC_VER >= 1400 )
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// Microsoft visual studio, version 2005 and higher.
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/*int _snprintf_s(
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char *buffer,
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size_t sizeOfBuffer,
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size_t count,
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const char *format [,
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argument] ...
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);*/
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inline int TIXML_SNPRINTF( char* buffer, size_t size, const char* format, ... )
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{
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va_list va;
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va_start( va, format );
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int result = vsnprintf_s( buffer, size, _TRUNCATE, format, va );
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va_end( va );
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return result;
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}
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#define TIXML_SSCANF sscanf_s
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#else
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// GCC version 3 and higher
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//#warning( "Using sn* functions." )
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#define TIXML_SNPRINTF snprintf
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#define TIXML_SSCANF sscanf
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#endif
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static const int TIXML2_MAJOR_VERSION = 1;
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static const int TIXML2_MINOR_VERSION = 0;
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static const int TIXML2_PATCH_VERSION = 8;
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namespace tinyxml2
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{
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class XMLDocument;
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class XMLElement;
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class XMLAttribute;
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class XMLComment;
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class XMLNode;
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class XMLText;
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class XMLDeclaration;
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class XMLUnknown;
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class XMLPrinter;
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/*
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A class that wraps strings. Normally stores the start and end
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pointers into the XML file itself, and will apply normalization
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and entity translation if actually read. Can also store (and memory
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manage) a traditional char[]
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*/
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class StrPair
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{
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public:
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enum {
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NEEDS_ENTITY_PROCESSING = 0x01,
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NEEDS_NEWLINE_NORMALIZATION = 0x02,
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COLLAPSE_WHITESPACE = 0x04,
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TEXT_ELEMENT = NEEDS_ENTITY_PROCESSING | NEEDS_NEWLINE_NORMALIZATION,
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TEXT_ELEMENT_LEAVE_ENTITIES = NEEDS_NEWLINE_NORMALIZATION,
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ATTRIBUTE_NAME = 0,
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ATTRIBUTE_VALUE = NEEDS_ENTITY_PROCESSING | NEEDS_NEWLINE_NORMALIZATION,
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ATTRIBUTE_VALUE_LEAVE_ENTITIES = NEEDS_NEWLINE_NORMALIZATION,
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COMMENT = NEEDS_NEWLINE_NORMALIZATION
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};
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StrPair() : _flags( 0 ), _start( 0 ), _end( 0 ) {}
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~StrPair();
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void Set( char* start, char* end, int flags ) {
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Reset();
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_start = start;
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_end = end;
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_flags = flags | NEEDS_FLUSH;
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}
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const char* GetStr();
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bool Empty() const {
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return _start == _end;
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}
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void SetInternedStr( const char* str ) {
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Reset();
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_start = const_cast<char*>(str);
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}
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void SetStr( const char* str, int flags=0 );
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char* ParseText( char* in, const char* endTag, int strFlags );
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char* ParseName( char* in );
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private:
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void Reset();
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void CollapseWhitespace();
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enum {
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NEEDS_FLUSH = 0x100,
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NEEDS_DELETE = 0x200
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};
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// After parsing, if *end != 0, it can be set to zero.
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int _flags;
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char* _start;
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char* _end;
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};
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/*
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A dynamic array of Plain Old Data. Doesn't support constructors, etc.
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Has a small initial memory pool, so that low or no usage will not
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cause a call to new/delete
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*/
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template <class T, int INIT>
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class DynArray
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{
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public:
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DynArray< T, INIT >() {
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_mem = _pool;
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_allocated = INIT;
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_size = 0;
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}
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~DynArray() {
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if ( _mem != _pool ) {
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delete [] _mem;
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}
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}
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void Push( T t ) {
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EnsureCapacity( _size+1 );
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_mem[_size++] = t;
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}
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T* PushArr( int count ) {
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EnsureCapacity( _size+count );
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T* ret = &_mem[_size];
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_size += count;
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return ret;
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}
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T Pop() {
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return _mem[--_size];
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}
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void PopArr( int count ) {
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TIXMLASSERT( _size >= count );
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_size -= count;
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}
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bool Empty() const {
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return _size == 0;
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}
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T& operator[](int i) {
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TIXMLASSERT( i>= 0 && i < _size );
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return _mem[i];
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}
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const T& operator[](int i) const {
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TIXMLASSERT( i>= 0 && i < _size );
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return _mem[i];
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}
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int Size() const {
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return _size;
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}
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int Capacity() const {
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return _allocated;
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}
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const T* Mem() const {
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return _mem;
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}
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T* Mem() {
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return _mem;
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}
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private:
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void EnsureCapacity( int cap ) {
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if ( cap > _allocated ) {
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int newAllocated = cap * 2;
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T* newMem = new T[newAllocated];
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memcpy( newMem, _mem, sizeof(T)*_size ); // warning: not using constructors, only works for PODs
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if ( _mem != _pool ) {
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delete [] _mem;
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}
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_mem = newMem;
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_allocated = newAllocated;
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}
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}
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T* _mem;
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T _pool[INIT];
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int _allocated; // objects allocated
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int _size; // number objects in use
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};
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/*
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Parent virtual class of a pool for fast allocation
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and deallocation of objects.
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*/
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class MemPool
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{
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public:
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MemPool() {}
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virtual ~MemPool() {}
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virtual int ItemSize() const = 0;
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virtual void* Alloc() = 0;
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virtual void Free( void* ) = 0;
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};
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/*
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Template child class to create pools of the correct type.
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*/
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template< int SIZE >
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class MemPoolT : public MemPool
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{
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public:
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MemPoolT() : _root(0), _currentAllocs(0), _nAllocs(0), _maxAllocs(0) {}
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~MemPoolT() {
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// Delete the blocks.
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for( int i=0; i<_blockPtrs.Size(); ++i ) {
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delete _blockPtrs[i];
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}
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}
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virtual int ItemSize() const {
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return SIZE;
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}
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int CurrentAllocs() const {
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return _currentAllocs;
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}
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virtual void* Alloc() {
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if ( !_root ) {
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// Need a new block.
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Block* block = new Block();
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_blockPtrs.Push( block );
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for( int i=0; i<COUNT-1; ++i ) {
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block->chunk[i].next = &block->chunk[i+1];
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}
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block->chunk[COUNT-1].next = 0;
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_root = block->chunk;
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}
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void* result = _root;
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_root = _root->next;
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++_currentAllocs;
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if ( _currentAllocs > _maxAllocs ) {
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_maxAllocs = _currentAllocs;
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}
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_nAllocs++;
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return result;
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}
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virtual void Free( void* mem ) {
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if ( !mem ) {
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return;
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}
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--_currentAllocs;
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Chunk* chunk = (Chunk*)mem;
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#ifdef DEBUG
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memset( chunk, 0xfe, sizeof(Chunk) );
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#endif
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chunk->next = _root;
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_root = chunk;
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}
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void Trace( const char* name ) {
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printf( "Mempool %s watermark=%d [%dk] current=%d size=%d nAlloc=%d blocks=%d\n",
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name, _maxAllocs, _maxAllocs*SIZE/1024, _currentAllocs, SIZE, _nAllocs, _blockPtrs.Size() );
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}
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enum { COUNT = 1024/SIZE }; // Some compilers do not accept to use COUNT in private part if COUNT is private
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private:
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union Chunk {
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Chunk* next;
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char mem[SIZE];
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};
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struct Block {
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Chunk chunk[COUNT];
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};
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DynArray< Block*, 10 > _blockPtrs;
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Chunk* _root;
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int _currentAllocs;
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int _nAllocs;
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int _maxAllocs;
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};
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/**
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Implements the interface to the "Visitor pattern" (see the Accept() method.)
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If you call the Accept() method, it requires being passed a XMLVisitor
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class to handle callbacks. For nodes that contain other nodes (Document, Element)
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you will get called with a VisitEnter/VisitExit pair. Nodes that are always leafs
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are simply called with Visit().
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If you return 'true' from a Visit method, recursive parsing will continue. If you return
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false, <b>no children of this node or its sibilings</b> will be visited.
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All flavors of Visit methods have a default implementation that returns 'true' (continue
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visiting). You need to only override methods that are interesting to you.
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Generally Accept() is called on the TiXmlDocument, although all nodes support visiting.
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You should never change the document from a callback.
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@sa XMLNode::Accept()
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*/
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class XMLVisitor
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{
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public:
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virtual ~XMLVisitor() {}
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/// Visit a document.
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virtual bool VisitEnter( const XMLDocument& /*doc*/ ) {
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return true;
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}
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/// Visit a document.
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virtual bool VisitExit( const XMLDocument& /*doc*/ ) {
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return true;
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}
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/// Visit an element.
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virtual bool VisitEnter( const XMLElement& /*element*/, const XMLAttribute* /*firstAttribute*/ ) {
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return true;
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}
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/// Visit an element.
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virtual bool VisitExit( const XMLElement& /*element*/ ) {
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return true;
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}
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/// Visit a declaration.
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virtual bool Visit( const XMLDeclaration& /*declaration*/ ) {
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return true;
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}
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/// Visit a text node.
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virtual bool Visit( const XMLText& /*text*/ ) {
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return true;
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}
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/// Visit a comment node.
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virtual bool Visit( const XMLComment& /*comment*/ ) {
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return true;
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}
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/// Visit an unknown node.
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virtual bool Visit( const XMLUnknown& /*unknown*/ ) {
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return true;
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}
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};
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/*
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Utility functionality.
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*/
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class XMLUtil
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{
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public:
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// Anything in the high order range of UTF-8 is assumed to not be whitespace. This isn't
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// correct, but simple, and usually works.
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static const char* SkipWhiteSpace( const char* p ) {
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while( !IsUTF8Continuation(*p) && std::isspace( *reinterpret_cast<const unsigned char*>(p) ) ) {
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++p;
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}
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return p;
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}
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static char* SkipWhiteSpace( char* p ) {
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while( !IsUTF8Continuation(*p) && std::isspace( *reinterpret_cast<unsigned char*>(p) ) ) {
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++p;
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}
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return p;
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}
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static bool IsWhiteSpace( char p ) {
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return !IsUTF8Continuation(p) && std::isspace( static_cast<unsigned char>(p) );
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}
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inline static bool StringEqual( const char* p, const char* q, int nChar=INT_MAX ) {
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int n = 0;
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if ( p == q ) {
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return true;
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}
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while( *p && *q && *p == *q && n<nChar ) {
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++p;
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++q;
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++n;
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}
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if ( (n == nChar) || ( *p == 0 && *q == 0 ) ) {
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return true;
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}
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return false;
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}
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inline static int IsUTF8Continuation( const char p ) {
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return p & 0x80;
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}
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inline static int IsAlphaNum( unsigned char anyByte ) {
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return ( anyByte < 128 ) ? std::isalnum( anyByte ) : 1;
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}
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inline static int IsAlpha( unsigned char anyByte ) {
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return ( anyByte < 128 ) ? std::isalpha( anyByte ) : 1;
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}
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static const char* ReadBOM( const char* p, bool* hasBOM );
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// p is the starting location,
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// the UTF-8 value of the entity will be placed in value, and length filled in.
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static const char* GetCharacterRef( const char* p, char* value, int* length );
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static void ConvertUTF32ToUTF8( unsigned long input, char* output, int* length );
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// converts primitive types to strings
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static void ToStr( int v, char* buffer, int bufferSize );
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static void ToStr( unsigned v, char* buffer, int bufferSize );
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static void ToStr( bool v, char* buffer, int bufferSize );
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static void ToStr( float v, char* buffer, int bufferSize );
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static void ToStr( double v, char* buffer, int bufferSize );
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// converts strings to primitive types
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static bool ToInt( const char* str, int* value );
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static bool ToUnsigned( const char* str, unsigned* value );
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static bool ToBool( const char* str, bool* value );
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static bool ToFloat( const char* str, float* value );
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static bool ToDouble( const char* str, double* value );
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};
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|
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/** XMLNode is a base class for every object that is in the
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XML Document Object Model (DOM), except XMLAttributes.
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Nodes have siblings, a parent, and children which can
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be navigated. A node is always in a XMLDocument.
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The type of a XMLNode can be queried, and it can
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be cast to its more defined type.
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A XMLDocument allocates memory for all its Nodes.
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When the XMLDocument gets deleted, all its Nodes
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will also be deleted.
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@verbatim
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A Document can contain: Element (container or leaf)
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Comment (leaf)
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Unknown (leaf)
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Declaration( leaf )
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An Element can contain: Element (container or leaf)
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Text (leaf)
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Attributes (not on tree)
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Comment (leaf)
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Unknown (leaf)
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@endverbatim
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*/
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class XMLNode
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{
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friend class XMLDocument;
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friend class XMLElement;
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public:
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/// Get the XMLDocument that owns this XMLNode.
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const XMLDocument* GetDocument() const {
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return _document;
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}
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/// Get the XMLDocument that owns this XMLNode.
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XMLDocument* GetDocument() {
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return _document;
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}
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virtual XMLElement* ToElement() {
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return 0; ///< Safely cast to an Element, or null.
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}
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virtual XMLText* ToText() {
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return 0; ///< Safely cast to Text, or null.
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}
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virtual XMLComment* ToComment() {
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return 0; ///< Safely cast to a Comment, or null.
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}
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virtual XMLDocument* ToDocument() {
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return 0; ///< Safely cast to a Document, or null.
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}
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virtual XMLDeclaration* ToDeclaration() {
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return 0; ///< Safely cast to a Declaration, or null.
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}
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virtual XMLUnknown* ToUnknown() {
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return 0; ///< Safely cast to an Unknown, or null.
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}
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virtual const XMLElement* ToElement() const {
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return 0;
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}
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virtual const XMLText* ToText() const {
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return 0;
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}
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virtual const XMLComment* ToComment() const {
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return 0;
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}
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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
|
|
Element: name of the element
|
|
Comment: the comment text
|
|
Unknown: the tag contents
|
|
Text: the text string
|
|
@endverbatim
|
|
*/
|
|
const char* Value() const {
|
|
return _value.GetStr();
|
|
}
|
|
|
|
/** Set the Value of an XML node.
|
|
@sa Value()
|
|
*/
|
|
void SetValue( const char* val, bool staticMem=false );
|
|
|
|
/// 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* value=0 ) const;
|
|
|
|
XMLElement* FirstChildElement( const char* value=0 ) {
|
|
return const_cast<XMLElement*>(const_cast<const XMLNode*>(this)->FirstChildElement( value ));
|
|
}
|
|
|
|
/// Get the last child node, or null if none exists.
|
|
const XMLNode* LastChild() const {
|
|
return _lastChild;
|
|
}
|
|
|
|
XMLNode* LastChild() {
|
|
return const_cast<XMLNode*>(const_cast<const XMLNode*>(this)->LastChild() );
|
|
}
|
|
|
|
/** Get the last child element or optionally the last child
|
|
element with the specified name.
|
|
*/
|
|
const XMLElement* LastChildElement( const char* value=0 ) const;
|
|
|
|
XMLElement* LastChildElement( const char* value=0 ) {
|
|
return const_cast<XMLElement*>(const_cast<const XMLNode*>(this)->LastChildElement(value) );
|
|
}
|
|
|
|
/// 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 opitionally supplied name.
|
|
const XMLElement* PreviousSiblingElement( const char* value=0 ) const ;
|
|
|
|
XMLElement* PreviousSiblingElement( const char* value=0 ) {
|
|
return const_cast<XMLElement*>(const_cast<const XMLNode*>(this)->PreviousSiblingElement( value ) );
|
|
}
|
|
|
|
/// 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 opitionally supplied name.
|
|
const XMLElement* NextSiblingElement( const char* value=0 ) const;
|
|
|
|
XMLElement* NextSiblingElement( const char* value=0 ) {
|
|
return const_cast<XMLElement*>(const_cast<const XMLNode*>(this)->NextSiblingElement( value ) );
|
|
}
|
|
|
|
/**
|
|
Add a child node as the last (right) child.
|
|
*/
|
|
XMLNode* InsertEndChild( XMLNode* addThis );
|
|
|
|
XMLNode* LinkEndChild( XMLNode* addThis ) {
|
|
return InsertEndChild( addThis );
|
|
}
|
|
/**
|
|
Add a child node as the first (left) child.
|
|
*/
|
|
XMLNode* InsertFirstChild( XMLNode* addThis );
|
|
/**
|
|
Add a node after the specified child node.
|
|
*/
|
|
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;
|
|
|
|
/**
|
|
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 DOM. Every node in the
|
|
XML tree will be conditionally visited and the host will be called back
|
|
via the TiXmlVisitor interface.
|
|
|
|
This is essentially a SAX interface for TinyXML. (Note however it doesn't re-parse
|
|
the XML for the callbacks, so the performance of TinyXML is unchanged by using this
|
|
interface versus any other.)
|
|
|
|
The interface has been based on ideas from:
|
|
|
|
- http://www.saxproject.org/
|
|
- http://c2.com/cgi/wiki?HierarchicalVisitorPattern
|
|
|
|
Which are both good references for "visiting".
|
|
|
|
An example of using Accept():
|
|
@verbatim
|
|
TiXmlPrinter printer;
|
|
tinyxmlDoc.Accept( &printer );
|
|
const char* xmlcstr = printer.CStr();
|
|
@endverbatim
|
|
*/
|
|
virtual bool Accept( XMLVisitor* visitor ) const = 0;
|
|
|
|
// internal
|
|
virtual char* ParseDeep( char*, StrPair* );
|
|
|
|
protected:
|
|
XMLNode( XMLDocument* );
|
|
virtual ~XMLNode();
|
|
XMLNode( const XMLNode& ); // not supported
|
|
XMLNode& operator=( const XMLNode& ); // not supported
|
|
|
|
XMLDocument* _document;
|
|
XMLNode* _parent;
|
|
mutable StrPair _value;
|
|
|
|
XMLNode* _firstChild;
|
|
XMLNode* _lastChild;
|
|
|
|
XMLNode* _prev;
|
|
XMLNode* _next;
|
|
|
|
private:
|
|
MemPool* _memPool;
|
|
void Unlink( XMLNode* child );
|
|
};
|
|
|
|
|
|
/** XML text.
|
|
|
|
Note that a text node can have child element nodes, for example:
|
|
@verbatim
|
|
<root>This is <b>bold</b></root>
|
|
@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 XMLText : public XMLNode
|
|
{
|
|
friend class XMLBase;
|
|
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;
|
|
}
|
|
|
|
char* ParseDeep( char*, StrPair* endTag );
|
|
virtual XMLNode* ShallowClone( XMLDocument* document ) const;
|
|
virtual bool ShallowEqual( const XMLNode* compare ) const;
|
|
|
|
protected:
|
|
XMLText( XMLDocument* doc ) : XMLNode( doc ), _isCData( false ) {}
|
|
virtual ~XMLText() {}
|
|
XMLText( const XMLText& ); // not supported
|
|
XMLText& operator=( const XMLText& ); // not supported
|
|
|
|
private:
|
|
bool _isCData;
|
|
};
|
|
|
|
|
|
/** An XML Comment. */
|
|
class 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;
|
|
|
|
char* ParseDeep( char*, StrPair* endTag );
|
|
virtual XMLNode* ShallowClone( XMLDocument* document ) const;
|
|
virtual bool ShallowEqual( const XMLNode* compare ) const;
|
|
|
|
protected:
|
|
XMLComment( XMLDocument* doc );
|
|
virtual ~XMLComment();
|
|
XMLComment( const XMLComment& ); // not supported
|
|
XMLComment& operator=( const XMLComment& ); // not supported
|
|
|
|
private:
|
|
};
|
|
|
|
|
|
/** In correct XML the declaration is the first entry in the file.
|
|
@verbatim
|
|
<?xml version="1.0" standalone="yes"?>
|
|
@endverbatim
|
|
|
|
TinyXML2 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 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;
|
|
|
|
char* ParseDeep( char*, StrPair* endTag );
|
|
virtual XMLNode* ShallowClone( XMLDocument* document ) const;
|
|
virtual bool ShallowEqual( const XMLNode* compare ) const;
|
|
|
|
protected:
|
|
XMLDeclaration( XMLDocument* doc );
|
|
virtual ~XMLDeclaration();
|
|
XMLDeclaration( const XMLDeclaration& ); // not supported
|
|
XMLDeclaration& operator=( const XMLDeclaration& ); // not supported
|
|
};
|
|
|
|
|
|
/** Any tag that tinyXml 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 TiXmlUnknowns.
|
|
*/
|
|
class 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;
|
|
|
|
char* ParseDeep( char*, StrPair* endTag );
|
|
virtual XMLNode* ShallowClone( XMLDocument* document ) const;
|
|
virtual bool ShallowEqual( const XMLNode* compare ) const;
|
|
|
|
protected:
|
|
XMLUnknown( XMLDocument* doc );
|
|
virtual ~XMLUnknown();
|
|
XMLUnknown( const XMLUnknown& ); // not supported
|
|
XMLUnknown& operator=( const XMLUnknown& ); // not supported
|
|
};
|
|
|
|
|
|
enum {
|
|
XML_NO_ERROR = 0,
|
|
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,
|
|
XML_ERROR_ELEMENT_MISMATCH,
|
|
XML_ERROR_PARSING_ELEMENT,
|
|
XML_ERROR_PARSING_ATTRIBUTE,
|
|
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
|
|
};
|
|
|
|
|
|
/** 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 XMLAttribute
|
|
{
|
|
friend class XMLElement;
|
|
public:
|
|
const char* Name() const {
|
|
return _name.GetStr(); ///< The name of the attribute.
|
|
}
|
|
const char* Value() const {
|
|
return _value.GetStr(); ///< The value of the attribute.
|
|
}
|
|
const XMLAttribute* Next() const {
|
|
return _next; ///< The next attribute in the list.
|
|
}
|
|
|
|
/** IntAttribute 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 QueryIntAttribute() if you need error checking.
|
|
*/
|
|
int IntValue() const {
|
|
int i=0;
|
|
QueryIntValue( &i );
|
|
return i;
|
|
}
|
|
/// Query as an unsigned integer. See IntAttribute()
|
|
unsigned UnsignedValue() const {
|
|
unsigned i=0;
|
|
QueryUnsignedValue( &i );
|
|
return i;
|
|
}
|
|
/// Query as a boolean. See IntAttribute()
|
|
bool BoolValue() const {
|
|
bool b=false;
|
|
QueryBoolValue( &b );
|
|
return b;
|
|
}
|
|
/// Query as a double. See IntAttribute()
|
|
double DoubleValue() const {
|
|
double d=0;
|
|
QueryDoubleValue( &d );
|
|
return d;
|
|
}
|
|
/// Query as a float. See IntAttribute()
|
|
float FloatValue() const {
|
|
float f=0;
|
|
QueryFloatValue( &f );
|
|
return f;
|
|
}
|
|
|
|
/** QueryIntAttribute interprets the attribute as an integer, and returns the value
|
|
in the provided paremeter. The function will return XML_NO_ERROR on success,
|
|
and XML_WRONG_ATTRIBUTE_TYPE if the conversion is not successful.
|
|
*/
|
|
int QueryIntValue( int* value ) const;
|
|
/// See QueryIntAttribute
|
|
int QueryUnsignedValue( unsigned int* value ) const;
|
|
/// See QueryIntAttribute
|
|
int QueryBoolValue( bool* value ) const;
|
|
/// See QueryIntAttribute
|
|
int QueryDoubleValue( double* value ) const;
|
|
/// See QueryIntAttribute
|
|
int 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( 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() : _next( 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 );
|
|
|
|
mutable StrPair _name;
|
|
mutable StrPair _value;
|
|
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 XMLElement : public XMLNode
|
|
{
|
|
friend class XMLBase;
|
|
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. 0 will be
|
|
returned if there is an error. For a method with error
|
|
checking, see QueryIntAttribute()
|
|
*/
|
|
int IntAttribute( const char* name ) const {
|
|
int i=0;
|
|
QueryIntAttribute( name, &i );
|
|
return i;
|
|
}
|
|
/// See IntAttribute()
|
|
unsigned UnsignedAttribute( const char* name ) const {
|
|
unsigned i=0;
|
|
QueryUnsignedAttribute( name, &i );
|
|
return i;
|
|
}
|
|
/// See IntAttribute()
|
|
bool BoolAttribute( const char* name ) const {
|
|
bool b=false;
|
|
QueryBoolAttribute( name, &b );
|
|
return b;
|
|
}
|
|
/// See IntAttribute()
|
|
double DoubleAttribute( const char* name ) const {
|
|
double d=0;
|
|
QueryDoubleAttribute( name, &d );
|
|
return d;
|
|
}
|
|
/// See IntAttribute()
|
|
float FloatAttribute( const char* name ) const {
|
|
float f=0;
|
|
QueryFloatAttribute( name, &f );
|
|
return f;
|
|
}
|
|
|
|
/** Given an attribute name, QueryIntAttribute() returns
|
|
XML_NO_ERROR, 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
|
|
*/
|
|
int QueryIntAttribute( const char* name, int* value ) const {
|
|
const XMLAttribute* a = FindAttribute( name );
|
|
if ( !a ) {
|
|
return XML_NO_ATTRIBUTE;
|
|
}
|
|
return a->QueryIntValue( value );
|
|
}
|
|
/// See QueryIntAttribute()
|
|
int 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()
|
|
int QueryBoolAttribute( const char* name, bool* value ) const {
|
|
const XMLAttribute* a = FindAttribute( name );
|
|
if ( !a ) {
|
|
return XML_NO_ATTRIBUTE;
|
|
}
|
|
return a->QueryBoolValue( value );
|
|
}
|
|
/// See QueryIntAttribute()
|
|
int QueryDoubleAttribute( const char* name, double* value ) const {
|
|
const XMLAttribute* a = FindAttribute( name );
|
|
if ( !a ) {
|
|
return XML_NO_ATTRIBUTE;
|
|
}
|
|
return a->QueryDoubleValue( value );
|
|
}
|
|
/// See QueryIntAttribute()
|
|
int QueryFloatAttribute( const char* name, float* value ) const {
|
|
const XMLAttribute* a = FindAttribute( name );
|
|
if ( !a ) {
|
|
return XML_NO_ATTRIBUTE;
|
|
}
|
|
return a->QueryFloatValue( 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, 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 );
|
|
}
|
|
|
|
/**
|
|
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 TiXmlText child
|
|
and accessing it directly.
|
|
|
|
If the first child of 'this' is a TiXmlText, 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
|
|
<foo>This is text</foo>
|
|
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
|
|
<foo><b>This is text</b></foo>
|
|
@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
|
|
<foo>This is <b>text</b></foo>
|
|
@endverbatim
|
|
GetText() will return "This is ".
|
|
*/
|
|
const char* GetText() const;
|
|
|
|
/**
|
|
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
|
|
<point>
|
|
<x>1</x>
|
|
<y>1.4</y>
|
|
</point>
|
|
@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.
|
|
|
|
*/
|
|
int QueryIntText( int* _value ) const;
|
|
/// See QueryIntText()
|
|
int QueryUnsignedText( unsigned* _value ) const;
|
|
/// See QueryIntText()
|
|
int QueryBoolText( bool* _value ) const;
|
|
/// See QueryIntText()
|
|
int QueryDoubleText( double* _value ) const;
|
|
/// See QueryIntText()
|
|
int QueryFloatText( float* _value ) const;
|
|
|
|
// internal:
|
|
enum {
|
|
OPEN, // <foo>
|
|
CLOSED, // <foo/>
|
|
CLOSING // </foo>
|
|
};
|
|
int ClosingType() const {
|
|
return _closingType;
|
|
}
|
|
char* ParseDeep( char* p, StrPair* endTag );
|
|
virtual XMLNode* ShallowClone( XMLDocument* document ) const;
|
|
virtual bool ShallowEqual( const XMLNode* compare ) const;
|
|
|
|
private:
|
|
XMLElement( XMLDocument* doc );
|
|
virtual ~XMLElement();
|
|
XMLElement( const XMLElement& ); // not supported
|
|
void operator=( const XMLElement& ); // not supported
|
|
|
|
XMLAttribute* FindAttribute( const char* name );
|
|
XMLAttribute* FindOrCreateAttribute( const char* name );
|
|
//void LinkAttribute( XMLAttribute* attrib );
|
|
char* ParseAttributes( char* p );
|
|
|
|
int _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 XMLDocument : public XMLNode
|
|
{
|
|
friend class XMLElement;
|
|
public:
|
|
/// constructor
|
|
XMLDocument( bool processEntities = true, Whitespace = PRESERVE_WHITESPACE );
|
|
~XMLDocument();
|
|
|
|
virtual XMLDocument* ToDocument() {
|
|
return this;
|
|
}
|
|
virtual const XMLDocument* ToDocument() const {
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
Parse an XML file from a character string.
|
|
Returns XML_NO_ERROR (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 will assume 'xml' points to a
|
|
null terminated string.
|
|
*/
|
|
int Parse( const char* xml, size_t nBytes=(size_t)(-1) );
|
|
|
|
/**
|
|
Load an XML file from disk.
|
|
Returns XML_NO_ERROR (0) on success, or
|
|
an errorID.
|
|
*/
|
|
int LoadFile( const char* filename );
|
|
|
|
/**
|
|
Load an XML file from disk. You are responsible
|
|
for providing and closing the FILE*.
|
|
|
|
Returns XML_NO_ERROR (0) on success, or
|
|
an errorID.
|
|
*/
|
|
int LoadFile( std::FILE* );
|
|
|
|
/**
|
|
Save the XML file to disk.
|
|
Returns XML_NO_ERROR (0) on success, or
|
|
an errorID.
|
|
*/
|
|
int SaveFile( const char* filename, bool compact = false );
|
|
|
|
/**
|
|
Save the XML file to disk. You are responsible
|
|
for providing and closing the FILE*.
|
|
|
|
Returns XML_NO_ERROR (0) on success, or
|
|
an errorID.
|
|
*/
|
|
int SaveFile( std::FILE* fp, bool compact = false );
|
|
|
|
bool ProcessEntities() const {
|
|
return _processEntities;
|
|
}
|
|
Whitespace WhitespaceMode() const {
|
|
return _whitespace;
|
|
}
|
|
|
|
/**
|
|
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 );
|
|
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
|
|
<?xml version="1.0" encoding="UTF-8"?>
|
|
@endverbatim
|
|
*/
|
|
XMLDeclaration* NewDeclaration( const char* text=0 );
|
|
/**
|
|
Create a new Unknown associated with
|
|
this Document. The memory forthe 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 ) {
|
|
node->_parent->DeleteChild( node );
|
|
}
|
|
|
|
void SetError( int error, const char* str1, const char* str2 );
|
|
|
|
/// Return true if there was an error parsing the document.
|
|
bool Error() const {
|
|
return _errorID != XML_NO_ERROR;
|
|
}
|
|
/// Return the errorID.
|
|
int ErrorID() const {
|
|
return _errorID;
|
|
}
|
|
/// Return a possibly helpful diagnostic location or string.
|
|
const char* GetErrorStr1() const {
|
|
return _errorStr1;
|
|
}
|
|
/// Return a possibly helpful secondary diagnostic location or string.
|
|
const char* GetErrorStr2() const {
|
|
return _errorStr2;
|
|
}
|
|
/// If there is an error, print it to stdout.
|
|
void PrintError() const;
|
|
|
|
// internal
|
|
char* Identify( char* p, XMLNode** node );
|
|
|
|
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
|
|
void InitDocument();
|
|
|
|
bool _writeBOM;
|
|
bool _processEntities;
|
|
int _errorID;
|
|
Whitespace _whitespace;
|
|
const char* _errorStr1;
|
|
const char* _errorStr2;
|
|
char* _charBuffer;
|
|
|
|
MemPoolT< sizeof(XMLElement) > _elementPool;
|
|
MemPoolT< sizeof(XMLAttribute) > _attributePool;
|
|
MemPoolT< sizeof(XMLText) > _textPool;
|
|
MemPoolT< sizeof(XMLComment) > _commentPool;
|
|
};
|
|
|
|
|
|
/**
|
|
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
|
|
DOM structure. It is a separate utility class.
|
|
|
|
Take an example:
|
|
@verbatim
|
|
<Document>
|
|
<Element attributeA = "valueA">
|
|
<Child attributeB = "value1" />
|
|
<Child attributeB = "value2" />
|
|
</Element>
|
|
</Document>
|
|
@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.FirstChild( "Document" ).FirstChild( "Element" ).FirstChild().NextSibling().ToElement();
|
|
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 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* value=0 ) {
|
|
return XMLHandle( _node ? _node->FirstChildElement( value ) : 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* _value=0 ) {
|
|
return XMLHandle( _node ? _node->LastChildElement( _value ) : 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* _value=0 ) {
|
|
return XMLHandle( _node ? _node->PreviousSiblingElement( _value ) : 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* _value=0 ) {
|
|
return XMLHandle( _node ? _node->NextSiblingElement( _value ) : 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() ) ? _node->ToElement() : 0 );
|
|
}
|
|
/// Safe cast to XMLText. This can return null.
|
|
XMLText* ToText() {
|
|
return ( ( _node && _node->ToText() ) ? _node->ToText() : 0 );
|
|
}
|
|
/// Safe cast to XMLUnknown. This can return null.
|
|
XMLUnknown* ToUnknown() {
|
|
return ( ( _node && _node->ToUnknown() ) ? _node->ToUnknown() : 0 );
|
|
}
|
|
/// Safe cast to XMLDeclaration. This can return null.
|
|
XMLDeclaration* ToDeclaration() {
|
|
return ( ( _node && _node->ToDeclaration() ) ? _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 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* value=0 ) const {
|
|
return XMLConstHandle( _node ? _node->FirstChildElement( value ) : 0 );
|
|
}
|
|
const XMLConstHandle LastChild() const {
|
|
return XMLConstHandle( _node ? _node->LastChild() : 0 );
|
|
}
|
|
const XMLConstHandle LastChildElement( const char* _value=0 ) const {
|
|
return XMLConstHandle( _node ? _node->LastChildElement( _value ) : 0 );
|
|
}
|
|
const XMLConstHandle PreviousSibling() const {
|
|
return XMLConstHandle( _node ? _node->PreviousSibling() : 0 );
|
|
}
|
|
const XMLConstHandle PreviousSiblingElement( const char* _value=0 ) const {
|
|
return XMLConstHandle( _node ? _node->PreviousSiblingElement( _value ) : 0 );
|
|
}
|
|
const XMLConstHandle NextSibling() const {
|
|
return XMLConstHandle( _node ? _node->NextSibling() : 0 );
|
|
}
|
|
const XMLConstHandle NextSiblingElement( const char* _value=0 ) const {
|
|
return XMLConstHandle( _node ? _node->NextSiblingElement( _value ) : 0 );
|
|
}
|
|
|
|
|
|
const XMLNode* ToNode() const {
|
|
return _node;
|
|
}
|
|
const XMLElement* ToElement() const {
|
|
return ( ( _node && _node->ToElement() ) ? _node->ToElement() : 0 );
|
|
}
|
|
const XMLText* ToText() const {
|
|
return ( ( _node && _node->ToText() ) ? _node->ToText() : 0 );
|
|
}
|
|
const XMLUnknown* ToUnknown() const {
|
|
return ( ( _node && _node->ToUnknown() ) ? _node->ToUnknown() : 0 );
|
|
}
|
|
const XMLDeclaration* ToDeclaration() const {
|
|
return ( ( _node && _node->ToDeclaration() ) ? _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 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( std::FILE* file=0, bool compact = false );
|
|
~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 );
|
|
/// 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, bool value );
|
|
void PushAttribute( const char* name, double value );
|
|
/// If streaming, close the Element.
|
|
void CloseElement();
|
|
|
|
/// 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 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();
|
|
}
|
|
|
|
private:
|
|
void SealElement();
|
|
void PrintSpace( int depth );
|
|
void PrintString( const char*, bool restrictedEntitySet ); // prints out, after detecting entities.
|
|
void Print( const char* format, ... );
|
|
|
|
bool _elementJustOpened;
|
|
bool _firstElement;
|
|
std::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< const char*, 10 > _stack;
|
|
DynArray< char, 20 > _buffer;
|
|
#ifdef _MSC_VER
|
|
DynArray< char, 20 > _accumulator;
|
|
#endif
|
|
};
|
|
|
|
|
|
} // tinyxml2
|
|
|
|
|
|
#endif // TINYXML2_INCLUDED
|