/src/gdal/curl/lib/curl_endian.c
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1 | | /*************************************************************************** |
2 | | * _ _ ____ _ |
3 | | * Project ___| | | | _ \| | |
4 | | * / __| | | | |_) | | |
5 | | * | (__| |_| | _ <| |___ |
6 | | * \___|\___/|_| \_\_____| |
7 | | * |
8 | | * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. |
9 | | * |
10 | | * This software is licensed as described in the file COPYING, which |
11 | | * you should have received as part of this distribution. The terms |
12 | | * are also available at https://curl.se/docs/copyright.html. |
13 | | * |
14 | | * You may opt to use, copy, modify, merge, publish, distribute and/or sell |
15 | | * copies of the Software, and permit persons to whom the Software is |
16 | | * furnished to do so, under the terms of the COPYING file. |
17 | | * |
18 | | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
19 | | * KIND, either express or implied. |
20 | | * |
21 | | * SPDX-License-Identifier: curl |
22 | | * |
23 | | ***************************************************************************/ |
24 | | |
25 | | #include "curl_setup.h" |
26 | | |
27 | | #include "curl_endian.h" |
28 | | |
29 | | /* |
30 | | * Curl_read16_le() |
31 | | * |
32 | | * This function converts a 16-bit integer from the little endian format, as |
33 | | * used in the incoming package to whatever endian format we are using |
34 | | * natively. |
35 | | * |
36 | | * Parameters: |
37 | | * |
38 | | * buf [in] - A pointer to a 2 byte buffer. |
39 | | * |
40 | | * Returns the integer. |
41 | | */ |
42 | | unsigned short Curl_read16_le(const unsigned char *buf) |
43 | 0 | { |
44 | 0 | return (unsigned short)(((unsigned short)buf[0]) | |
45 | 0 | ((unsigned short)buf[1] << 8)); |
46 | 0 | } |
47 | | |
48 | | /* |
49 | | * Curl_read32_le() |
50 | | * |
51 | | * This function converts a 32-bit integer from the little endian format, as |
52 | | * used in the incoming package to whatever endian format we are using |
53 | | * natively. |
54 | | * |
55 | | * Parameters: |
56 | | * |
57 | | * buf [in] - A pointer to a 4 byte buffer. |
58 | | * |
59 | | * Returns the integer. |
60 | | */ |
61 | | unsigned int Curl_read32_le(const unsigned char *buf) |
62 | 0 | { |
63 | 0 | return ((unsigned int)buf[0]) | ((unsigned int)buf[1] << 8) | |
64 | 0 | ((unsigned int)buf[2] << 16) | ((unsigned int)buf[3] << 24); |
65 | 0 | } |
66 | | |
67 | | /* |
68 | | * Curl_read16_be() |
69 | | * |
70 | | * This function converts a 16-bit integer from the big endian format, as |
71 | | * used in the incoming package to whatever endian format we are using |
72 | | * natively. |
73 | | * |
74 | | * Parameters: |
75 | | * |
76 | | * buf [in] - A pointer to a 2 byte buffer. |
77 | | * |
78 | | * Returns the integer. |
79 | | */ |
80 | | unsigned short Curl_read16_be(const unsigned char *buf) |
81 | 0 | { |
82 | 0 | return (unsigned short)(((unsigned short)buf[0] << 8) | |
83 | 0 | ((unsigned short)buf[1])); |
84 | 0 | } |