1 #include "buffer.h" 2 3 extern ssize_t buffer_stubborn_read(ssize_t (*op)(),int fd,const char* buf, size_t len,void* cookie); 4 buffer_feed(buffer * b)5ssize_t buffer_feed(buffer* b) { 6 if (b->p==b->n) { 7 ssize_t w; 8 if ((w=buffer_stubborn_read(b->op,b->fd,b->x,b->a,b))<0) 9 return -1; 10 b->n=(size_t)w; 11 b->p=0; 12 } 13 return (ssize_t)(b->n-b->p); 14 } 15