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#include "buffer.h"
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extern int buffer_stubborn_read(ssize_t (*op)(),int fd,const char* buf, size_t len,void* cookie);
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int buffer_feed(buffer* b) {
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if (b->p==b->n) {
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int w;
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if ((w=buffer_stubborn_read(b->op,b->fd,b->x,b->a,b))<0)
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return -1;
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b->n=w;
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b->p=0;
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}
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return (b->n-b->p);
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}
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