view.h

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#ifndef _VIEW_H
#define _VIEW_H
#include "list.h"
#include "tuple.h"
#include "segment.h"

enum segtype { owned, borrowed };

typedef struct _view View;

struct _view {
  enum segtype type;  
  unsigned int len;   
  List *tuple;        
};

typedef struct _IOElement IOElement;

struct _IOElement {
  char *ptr;          
  size_t length;      
};

typedef struct _IOVec IOVec;

struct _IOVec {
  unsigned int vecLength;  
  IOElement *vec;          
};


extern void view_Init(void *(*view_allocate)(size_t), void (*view_deallocate)(void *));

extern View *view_CreateBorrowed(char *input, unsigned int length);

extern View *view_CreateOwned(char *input, unsigned int length);

extern void view_Delete(View *view);

extern unsigned int view_DeleteFront(View *view, unsigned int N);

extern unsigned int view_AppendData(View *view, char *input, unsigned int length);

extern View *view_Copy(const View *view);

extern View *view_CopyFront(const View *view, unsigned int N);

extern View *view_ViewCat(View *v1, const View *v2);

extern View *view_Cut(View *v1, unsigned int cutIndex);

unsigned int view_ViewDelete(View *vParent, const View *vChild);

extern unsigned int view_GetChar(const View *view, unsigned int pos, char *retval);

extern char *view_CopyChunk(View *view, unsigned int begin, unsigned int end);

extern unsigned int view_DeleteChunk(View *view, unsigned int begin, unsigned int end);

/*
 * \brief 
 *    Insert a string into a view.
 *
 * \return 0 failure
 * \return 1 success
 *
 * \param view the view that the new segment will be inserted into.
 * \param input the new segment.
 * \param length the length of the new segment.
 *
 */
/* not functional.
   extern unsigned int view_InsertRef(View *view, unsigned int insertPos, char *input, unsigned int length); */

unsigned int view_Length(const View *view);

size_t view_Strcspn(View *view, const char *charset, size_t s2Len);

int view_Strspn(View *view, const char *charset, size_t s2Len);

extern int view_Strstr(View *view, const char *str2, size_t s2Len);

extern void view_Print(View *view);

extern void view_DebugPrint(View *view);

extern IOVec *view_IOVec(View *view);

extern void iovec_Delete(IOVec *iovec);

#endif  /* _VIEW_H */

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