<!-- TXMLSetup.md --- 
;; 
;; Description: 
;; Author: Hongyi Wu(吴鸿毅)
;; Email: wuhongyi@qq.com 
;; Created: 一 1月  7 15:50:38 2019 (+0800)
;; Last-Updated: 三 9月 16 10:40:44 2020 (+0800)
;;           By: Hongyi Wu(吴鸿毅)
;;     Update #: 2
;; URL: http://wuhongyi.cn -->

# TXMLSetup-

```
Class TXMLSetup is used as storage of xml file settings
This class is used in TXMLFile and in TXmlBuffer classes.
Xml settings can be coded via a string in following format

  "2xoo"
   ||| \ .
   || \ usage of name spaces.
   | \ usage of DTD;
    \ storage of TStreamerInfo objects in file;
     layout of xml file (= 2 - specialized (default), = 3 - generic)

For last three boolean parameters "x" means true, "o" - false

Such string can be set as argument of TXMLFile constructor. In that
case new TXMLFile with such parameters will be created.
These settings automatically stored in xml file.
```

## class

```cpp
namespace xmlio {
extern const char *Root;
extern const char *Setup;
extern const char *ClassVersion;
extern const char *IOVersion;
extern const char *OnlyVersion;
extern const char *Ptr;
extern const char *Ref;
extern const char *Null;
extern const char *IdBase;
extern const char *Size;
extern const char *Xmlobject;
extern const char *Xmlkey;
extern const char *Cycle;
extern const char *XmlBlock;
extern const char *Zip;
extern const char *Object;
extern const char *ObjClass;
extern const char *Class;
extern const char *Member;
extern const char *Item;
extern const char *Name;
extern const char *Title;
extern const char *CreateTm;
extern const char *ModifyTm;
extern const char *ObjectUUID;
extern const char *Type;
extern const char *Value;
extern const char *v;
extern const char *cnt;
extern const char *True;
extern const char *False;
extern const char *SInfos;

extern const char *Array;
extern const char *Bool;
extern const char *Char;
extern const char *Short;
extern const char *Int;
extern const char *Long;
extern const char *Long64;
extern const char *Float;
extern const char *Double;
extern const char *UChar;
extern const char *UShort;
extern const char *UInt;
extern const char *ULong;
extern const char *ULong64;
extern const char *String;
extern const char *CharStar;
}
```

----

**TXMLSetup**

```cpp
public:
   enum EXMLLayout { kSpecialized = 2, kGeneralized = 3 };

   TXMLSetup();
   TXMLSetup(const char *opt);
   TXMLSetup(const TXMLSetup &src);
   virtual ~TXMLSetup();

   TString GetSetupAsString();

   void PrintSetup();

   EXMLLayout GetXmlLayout() const { return fXmlLayout; }
   Bool_t IsStoreStreamerInfos() const { return fStoreStreamerInfos; }
   Bool_t IsUseDtd() const { return fUseDtd; }
   Bool_t IsUseNamespaces() const { return fUseNamespaces; }

   virtual void SetXmlLayout(EXMLLayout layout) { fXmlLayout = layout; }
   virtual void SetStoreStreamerInfos(Bool_t iConvert = kTRUE) { fStoreStreamerInfos = iConvert; }
   virtual void SetUsedDtd(Bool_t use = kTRUE) { fUseDtd = use; }
   virtual void SetUseNamespaces(Bool_t iUseNamespaces = kTRUE) { fUseNamespaces = iUseNamespaces; }

   const char *XmlConvertClassName(const char *name);
   const char *XmlClassNameSpaceRef(const TClass *cl);
   const char *XmlGetElementName(const TStreamerElement *el);

   Int_t GetNextRefCounter() { return fRefCounter++; }

   static TString DefaultXmlSetup();
   static void SetNameSpaceBase(const char *namespacebase);

protected:
   TClass *XmlDefineClass(const char *xmlClassName);
   const char *GetElItemName(TStreamerElement *el);

   Bool_t IsValidXmlSetup(const char *setupstr);
   Bool_t ReadSetupFromStr(const char *setupstr);

   Int_t AtoI(const char *sbuf, Int_t def = 0, const char *errinfo = 0);

   EXMLLayout fXmlLayout;
   Bool_t fStoreStreamerInfos;
   Bool_t fUseDtd;
   Bool_t fUseNamespaces;

   Int_t fRefCounter; //!  counter , used to build id of xml references

   TString fStrBuf; //!  buffer, used in XmlDefineClass() function

   static TString fgNameSpaceBase;
```


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