[WIP] Added TreeXML.h/.cpp

This commit is contained in:
hyzboy 2024-12-25 00:28:54 +08:00
parent 21e2b6a9b5
commit ca43928e52
2 changed files with 105 additions and 0 deletions

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#pragma once
#include<hgl/type/List.h>
#include<hgl/type/StringView.h>
namespace hgl
{
namespace xml
{
//TreeXML可以直接将整个XML解晰到一个树形结构中
//对于访问解晰非常的友好
//但由于要一次性保存整个树形结构所以对内存消耗较大且必须等到整个XML解晰完才可以访问。
//所以TreeXML仅限于对小型XML文件的解晰对于大型XML文件还是使用XMLParse进行流式解晰比较好。
class TreeXML
{
char *xml_raw_data; ///<整体XML原始数据
int xml_raw_size; ///<整体XML原始数据长度
protected:
using XSVList=List<U8StringView>;
protected:
XSVList ElementNameList; ///<所有元素点名字文本视图
XSVList AttsList; ///<所有属性点名字文本视图
XSVList InfoList; ///<所有属性点信息文本视图
XSVList DataList; ///<数据文本视图
public:
class Node
{
U8StringView element_name; ///<元素点名字视图
U8StringView atts; ///<属性点文字视图
};
public:
TreeXML(char *,int);
};//class TreeXML
TreeXML *ParseXMLToTree(char *,int);
}//namespace xml
}//namespace hgl

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src/xml/TreeXML.cpp Normal file
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#include<hgl/util/xml/TreeXML.h>
#include<hgl/type/Stack.h>
#include<expat.h>
namespace hgl
{
namespace xml
{
TreeXML::TreeXML(char *data,int size)
{
xml_raw_data=data;
xml_raw_size=size;
}
namespace
{
constexpr const char XML_UTF8_Charset[]="utf-8";
class XMLTreeParse
{
TreeXML *root;
Stack<TreeXML *> tree_stack;
TreeXML *current;
};
void TreeXMLStartElement(XMLTreeParse *xtp,const XML_Char *name,const XML_Char **atts)
{
}
void TreeXMLCharData(XMLTreeParse *xtp,const XML_Char *str,int len)
{
}
void TreeXMLEndElement(XMLTreeParse *xtp,const XML_Char *name)
{
}
}//namespace
TreeXML *ParseXMLToTree(char *xml_raw_text,int xml_raw_size)
{
if(!xml_raw_text||xml_raw_size<=0)return(nullptr);
XMLTreeParse xtp;
TreeXML *root=new TreeXML(xml_raw_text,xml_raw_size);
XML_Parser xml=XML_ParserCreate(XML_UTF8_Charset);
XML_SetUserData(xml,(void *)&xtp);
XML_SetElementHandler(xml,(XML_StartElementHandler)TreeXMLStartElement,(XML_EndElementHandler)TreeXMLEndElement);
XML_SetCharacterDataHandler(xml,(XML_CharacterDataHandler)TreeXMLCharData);
XML_Parse(xml,xml_raw_text,xml_raw_size,true);
}
}//namespace xml
}//namespace hgl