striter.h

#ifndef STR_ITER__H__
#define STR_ITER__H__

struct str;

typedef struct
{
  const struct str* str;
  unsigned start;
  const char* startptr;
  unsigned len;
  char sep;
} striter;

void striter_start(striter* iter, const struct str* s, char sep);
int striter_valid(striter*);
int striter_advance(striter*);

#define str_copyiter(STR,ITER) str_copyb(STR,(ITER)->startptr,(ITER)->len)

#define str_catiter(STR,ITER) str_catb(STR,(ITER)->startptr,(ITER)->len)

#define obuf_putiter(OBUF,ITER) obuf_write(OBUF,(ITER)->startptr,(ITER)->len)

#define striter_loop(ITER,STR,SEP) for(striter_start(ITER,STR,SEP);striter_valid(ITER);striter_advance(ITER))

#endif