1buffer_get(3)              Library Functions Manual              buffer_get(3)
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NAME

6       buffer_get - read binary data from buffer
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SYNTAX

9       #include <buffer.h>
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11       ssize_t buffer_get(buffer* b,char* x,size_t len);
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DESCRIPTION

14       Normally  buffer_get  copies data to x[0], x[1], ..., x[len-1] from the
15       beginning of a string stored in preallocated space; removes  these  len
16       bytes from the string; and returns len.
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18       If,  however,  the  string  has fewer than len (but more than 0) bytes,
19       buffer_get copies only that many bytes, and returns that number.
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21       If the string is empty, buffer_get first uses a read operation to  feed
22       data  into the string. The read operation may indicate end of input, in
23       which case buffer_get returns 0; or a read error, in  which  case  buf‐
24       fer_get returns -1, setting errno appropriately.
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26       The  preallocated  space and the read operation are specified by b. You
27       must initialize b using buffer_init before calling buffer_get  (or  use
28       the pre-initialized buffer_0).
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SEE ALSO

31       buffer_init(3),  buffer_feed(3),  buffer_peek(3),  buffer_seek(3), buf‐
32       fer(3)
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36                                                                 buffer_get(3)
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