tinyxml 扩展，增加、删除、修改元素

/* www.sourceforge.net/projects/tinyxml Original code by Lee Thomason (www.grinninglizard.com) This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. */ #include <ctype.h> #ifdef TIXML_USE_STL #include <sstream> #include <iostream> #endif #include "tinyxml.h" FILE* TiXmlFOpen( const char* filename, const char* mode ); bool TiXmlBase::condenseWhiteSpace = true; // Microsoft compiler security FILE* TiXmlFOpen( const char* filename, const char* mode ) { #if defined(_MSC_VER) && (_MSC_VER >= 1400 ) FILE* fp = 0; errno_t err = fopen_s( &fp, filename, mode ); if ( !err && fp ) return fp; return 0; #else return fopen( filename, mode ); #endif } void TiXmlBase::EncodeString( const TIXML_STRING& str, TIXML_STRING* outString ) { int i=0; while( i<(int)str.length() ) { unsigned char c = (unsigned char) str[i]; if ( c == '&' && i < ( (int)str.length() - 2 ) && str[i+1] == '#' && str[i+2] == 'x' ) { // Hexadecimal character reference. // Pass through unchanged. // &#xA9; -- copyright symbol, for example. // // The -1 is a bug fix from Rob Laveaux. It keeps // an overflow from happening if there is no ';'. // There are actually 2 ways to exit this loop - // while fails (error case) and break (semicolon found). // However, there is no mechanism (currently) for // this function to return an error. while ( i<(int)str.length()-1 ) { outString->append( str.c_str() + i, 1 ); ++i; if ( str[i] == ';' ) break; } } else if ( c == '&' ) { outString->append( entity[0].str, entity[0].strLength ); ++i; } else if ( c == '<' ) { outString->append( entity[1].str, entity[1].strLength ); ++i; } else if ( c == '>' ) { outString->append( entity[2].str, entity[2].strLength ); ++i; } else if ( c == '\"' ) { outString->append( entity[3].str, entity[3].strLength ); ++i; } else if ( c == '\'' ) { outString->append( entity[4].str, entity[4].strLength ); ++i; } else if ( c < 32 ) { // Easy pass at non-alpha/numeric/symbol // Below 32 is symbolic. char buf[ 32 ]; #if defined(TIXML_SNPRINTF) TIXML_SNPRINTF( buf, sizeof(buf), "&#x%02X;", (unsigned) ( c & 0xff ) ); #else sprintf( buf, "&#x%02X;", (unsigned) ( c & 0xff ) ); #endif //*ME: warning C4267: convert 'size_t' to 'int' //*ME: Int-Cast to make compiler happy ... outString->append( buf, (int)strlen( buf ) ); ++i; } else { //char realc = (char) c; //outString->append( &realc, 1 ); *outString += (char) c; // somewhat more efficient function call. ++i; } } } TiXmlNode::TiXmlNode( NodeType _type ) : TiXmlBase() { parent = 0; type = _type; firstChild = 0; lastChild = 0; prev = 0; next = 0; } TiXmlNode::~TiXmlNode() { TiXmlNode* node = firstChild; TiXmlNode* temp = 0; while ( node ) { temp = node; node = node->next; delete temp; } } void TiXmlNode::CopyTo( TiXmlNode* target ) const { target->SetValue (value.c_str() ); target->userData = userData; target->location = location; } void TiXmlNode::Clear() { TiXmlNode* node = firstChild; TiXmlNode* temp = 0; while ( node ) { temp = node; node = node->next; delete temp; } firstChild = 0; lastChild = 0; } TiXmlNode* TiXmlNode::LinkEndChild( TiXmlNode* node ) { assert( node->parent == 0 || node->parent == this ); assert( node->GetDocument() == 0 || node->GetDocument() == this->GetDocument() ); if ( node->Type() == TiXmlNode::TINYXML_DOCUMENT ) { delete node; if ( GetDocument() ) GetDocument()->SetError( TIXML_ERROR_DOCUMENT_TOP_ONLY, 0, 0, TIXML_ENCODING_UNKNOWN ); return 0; } node->parent = this; node->prev = lastChild; node->next = 0; if ( lastChild ) lastChild->next = node; else firstChild = node; // it was an empty list. lastChild = node; return node; } TiXmlNode* TiXmlNode::InsertEndChild( const TiXmlNode& addThis ) { if ( addThis.Type() == TiXmlNode::TINYXML_DOCUMENT ) { if ( GetDocument() ) GetDocument()->SetError( TIXML_ERROR_DOCUMENT_TOP_ONLY, 0, 0, TIXML_ENCODING_UNKNOWN ); return 0; } TiXmlNode* node = addThis.Clone(); if ( !node ) return 0; return LinkEndChild( node ); } TiXmlNode* TiXmlNode::InsertBeforeChild( TiXmlNode* beforeThis, const TiXmlNode& addThis ) { if ( !beforeThis || beforeThis->parent != this ) { return 0; } if ( addThis.Type() == TiXmlNode::TINYXML_DOCUMENT ) { if ( GetDocument() ) GetDocument()->SetError( TIXML_ERROR_DOCUMENT_TOP_ONLY, 0, 0, TIXML_ENCODING_UNKNOWN ); return 0; } TiXmlNode* node = addThis.Clone(); if ( !node ) return 0; node->parent = this; node->next = beforeThis; node->prev = beforeThis->prev; if ( beforeThis->prev ) { beforeThis->prev->next = node; } else { assert( firstChild == beforeThis ); firstChild = node; } beforeThis->prev = node; return node; } TiXmlNode* TiXmlNode::InsertAfterChild( TiXmlNode* afterThis, const TiXmlNode& addThis ) { if ( !afterThis || afterThis->parent != this ) { return 0; } if ( addThis.Type() == TiXmlNode::TINYXML_DOCUMENT ) { if ( GetDocument() ) GetDocument()->SetError( TIXML_ERROR_DOCUMENT_TOP_ONLY, 0, 0, TIXML_ENCODING_UNKNOWN ); return 0; } TiXmlNode* node = addThis.Clone(); if ( !node ) return 0; node->parent = this; node->prev = afterThis; node->next = afterThis->next; if ( afterThis->next ) { afterThis->next->prev = node; } else { assert( lastChild == afterThis ); lastChild = node; } afterThis->next = node; return node; } TiXmlNode* TiXmlNode::ReplaceChild( TiXmlNode* replaceThis, const TiXmlNode& withThis ) { if ( !replaceThis ) return 0; if ( replaceThis->parent != this ) return 0; if ( withThis.ToDocument() ) { // A document can never be a child. Thanks to Noam. TiXmlDocument* document = GetDocument(); if ( document ) document->SetError( TIXML_ERROR_DOCUMENT_TOP_ONLY, 0, 0, TIXML_ENCODING_UNKNOWN ); return 0; } TiXmlNode* node = withThis.Clone(); if ( !node ) return 0; node->next = replaceThis->next; node->prev = replaceThis->prev; if ( replaceThis->next ) replaceThis->next->prev = node; else lastChild = node; if ( replaceThis->prev ) replaceThis->prev->next = node; else firstChild = node; delete replaceThis; node->parent = this; return node; } bool TiXmlNode::RemoveChild( TiXmlNode* removeThis ) { if ( !removeThis ) { return false; } if ( removeThis->parent != this ) { assert( 0 ); return false; } if ( removeThis->next ) removeThis->next->prev = removeThis->prev; else lastChild = removeThis->prev; if ( removeThis->prev ) removeThis->prev->next = removeThis->next; else firstChild = removeThis->next; delete removeThis; return true; } const TiXmlNode* TiXmlNode::FirstChild( const char * _value ) const { const TiXmlNode* node; for ( node = firstChild; node; node = node->next ) { if ( strcmp( node->Value(), _value ) == 0 ) return node; } return 0; } const TiXmlNode* TiXmlNode::LastChild( const char * _value ) const { const TiXmlNode* node; for ( node = lastChild; node; node = node->prev ) { if ( strcmp( node->Value(), _value ) == 0 ) return node; } return 0; }