delegate.hpp

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#ifndef xmlpp_delegate_hpp
#define xmlpp_delegate_hpp
 
#include <string>
 
#include "expat.h"
 
namespace xmlpp {
 
class Error  {
public:
  explicit Error (XML_Error error) noexcept;
  std::string to_string() const;
  XML_Error errorcode() const;
private:
  XML_Error error;
};
 
class delegate {
public:
  virtual ~delegate()=default;
 
  virtual void onStartElement(const XML_Char *fullname,
                              const XML_Char **atts)  = 0;
  virtual void onEndElement(  const XML_Char *fullname)   = 0;
  
  virtual void onCharacterData(const char * pBuf, int len) = 0;
 
  virtual void onComment( const XML_Char *data)= 0;
 
  virtual void onStartCdataSection()= 0;
  
  virtual void onEndCdataSection()= 0;
 
                         const XML_Char      *encoding,
                         int standalone)= 0;
  virtual void onParseError(size_t line,
                size_t column,
                size_t pos,
                Error error) = 0;
 
  virtual void onProcessingInstruction(const XML_Char* target,
                                       const XML_Char* data) = 0;
 
  virtual void onStartNamespace(const XML_Char* prefix,
                                const XML_Char* uri) = 0;
  virtual void onEndNamespace(const XML_Char* prefix) = 0;
  
 
  virtual void onStartDoctypeDecl(const XML_Char *doctypeName,
                                  const XML_Char *sysid,
                                  const XML_Char *pubid,
                                  int has_internal_subset) = 0;
  virtual void onEndDoctypeDecl() = 0;
 
  virtual void onElementDecl( const XML_Char *name, XML_Content *model) = 0;
 
  virtual void onAttlistDecl(const XML_Char *elname,
                             const XML_Char *attname,
                             const XML_Char *att_type,
                             const XML_Char *dflt,
                             bool            isrequired) = 0;
 
                            int is_parameter_entity,
                            const XML_Char *value,
                            int value_length,
                            const XML_Char *base,
                            const XML_Char *systemId,
                            const XML_Char *publicId,
                            const XML_Char *notationName) = 0;
                              const XML_Char* base,
                              const XML_Char* systemId,
                              const XML_Char* publicId) = 0;
  
  virtual void onUnparsedEntityDecl(const XML_Char* entityName,
                                    const XML_Char* base,
                                    const XML_Char* systemId,
                                    const XML_Char* publicId,
                                    const XML_Char* notationName) = 0;
  virtual void onSkippedEntity(const XML_Char *entityName,
                               int is_parameter_entity) = 0;
};
 
class abstract_delegate : public delegate {
public:
  abstract_delegate()=default;
  
  void onStartElement(const XML_Char *fullname, const XML_Char **atts) override;
  void onEndElement(    const XML_Char *fullname) override;
  void onCharacterData(const char * pBuf, int len) override;
  void onProcessingInstruction(const XML_Char* target,
                               const XML_Char* data) override;
  void onUnparsedEntityDecl(const XML_Char* entityName,
                const XML_Char* base,
                            const XML_Char* systemId,
                            const XML_Char* publicId,
                            const XML_Char* notationName) override;
  void onNotationDecl(const XML_Char* notationName,
                      const XML_Char* base,
                      const XML_Char* systemId,
                      const XML_Char* publicId) override;
  void onStartNamespace(const XML_Char* prefix, const XML_Char* uri) override;
  void onEndNamespace(const XML_Char*) override;
  void onAttlistDecl(const XML_Char *elname,
                     const XML_Char *attname,
                     const XML_Char *att_type,
                     const XML_Char *dflt,
                     bool            isrequired) override;
  void onStartCdataSection() override;
  void onEndCdataSection() override;
  
  void onStartDoctypeDecl(const XML_Char *doctypeName,
                          const XML_Char *sysid,
                          const XML_Char *pubid,
                          int has_internal_subset) override;
  void onEndDoctypeDecl() override;
 
  void onComment( const XML_Char *data) override;
  void onElementDecl( const XML_Char *name, XML_Content *model) override;
  void onEntityDecl(const XML_Char *entityName,
                    int is_parameter_entity,
                    const XML_Char *value,
                    int value_length,
                    const XML_Char *base,
                    const XML_Char *systemId,
                    const XML_Char *publicId,
                    const XML_Char *notationName) override;
  void onSkippedEntity(const XML_Char *entityName,
                       int is_parameter_entity) override;
  void onXmlDecl( const XML_Char      *version,
                 const XML_Char      *encoding,
                 int standalone) override;
  void onParseError(size_t line,size_t column, size_t pos, Error error) override;
};
}
#endif // #ifndef xmlpp_delegate_hpp