1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/*-
* Copyright (c) 2008-2012 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#include "wt_internal.h"
/*
* __wt_cell_copy --
* Copy an on-page cell into a return buffer, processing as needed.
*/
int
__wt_cell_copy(WT_SESSION_IMPL *session, WT_CELL *cell, WT_BUF *retb)
{
WT_CELL_UNPACK *unpack, _unpack;
unpack = &_unpack;
__wt_cell_unpack(cell, unpack);
return (__wt_cell_unpack_copy(session, unpack, retb));
}
/*
* __wt_cell_unpack_copy --
* Copy an unpacked cell into a return buffer, processing as needed.
*/
int
__wt_cell_unpack_copy(
WT_SESSION_IMPL *session, WT_CELL_UNPACK *unpack, WT_BUF *retb)
{
WT_BTREE *btree;
void *huffman;
btree = session->btree;
/* Get the cell's data. */
switch (unpack->type) {
case WT_CELL_KEY:
case WT_CELL_VALUE:
WT_RET(__wt_buf_set(session, retb, unpack->data, unpack->size));
break;
case WT_CELL_KEY_OVFL:
case WT_CELL_VALUE_OVFL:
WT_RET(__wt_ovfl_in(session, retb, unpack->data, unpack->size));
break;
WT_ILLEGAL_VALUE(session);
}
/* Select a Huffman encoding function. */
switch (unpack->type) {
case WT_CELL_KEY:
case WT_CELL_KEY_OVFL:
if ((huffman = btree->huffman_key) == NULL)
return (0);
break;
case WT_CELL_VALUE:
case WT_CELL_VALUE_OVFL:
default:
if ((huffman = btree->huffman_value) == NULL)
return (0);
break;
}
return (__wt_huffman_decode(
session, huffman, retb->data, retb->size, retb));
}
|
