1/*
2 * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
3 * Distributed under the terms of the MIT License.
4 */
5#ifndef _PACKAGE__HPKG__V1__PRIVATE__HAIKU_PACKAGE_H_
6#define _PACKAGE__HPKG__V1__PRIVATE__HAIKU_PACKAGE_H_
7
8
9#include <SupportDefs.h>
10
11#include <package/hpkg/HPKGDefs.h>
12
13
14namespace BPackageKit {
15
16namespace BHPKG {
17
18namespace V1 {
19
20namespace BPrivate {
21
22
23// header
24struct hpkg_header {
25	uint32	magic;							// "hpkg"
26	uint16	header_size;
27	uint16	version;
28	uint64	total_size;
29
30	// package attributes section
31	uint32	attributes_compression;
32	uint32	attributes_length_compressed;
33	uint32	attributes_length_uncompressed;
34	uint32	attributes_strings_length;
35	uint32	attributes_strings_count;
36
37	// TOC section
38	uint32	toc_compression;
39	uint64	toc_length_compressed;
40	uint64	toc_length_uncompressed;
41	uint64	toc_strings_length;
42	uint64	toc_strings_count;
43};
44
45
46// header
47struct hpkg_repo_header {
48	uint32	magic;							// "hpkr"
49	uint16	header_size;
50	uint16	version;
51	uint64	total_size;
52
53	// repository info section
54	uint32	info_compression;
55	uint32	info_length_compressed;
56	uint32	info_length_uncompressed;
57
58	// package attributes section
59	uint32	packages_compression;
60	uint64	packages_length_compressed;
61	uint64	packages_length_uncompressed;
62	uint64	packages_strings_length;
63	uint64	packages_strings_count;
64};
65
66
67// attribute tag arithmetics
68// (using 6 bits for id, 3 for type, 1 for hasChildren and 2 for encoding)
69static inline uint16
70compose_attribute_tag(uint16 id, uint16 type, uint16 encoding, bool hasChildren)
71{
72	return ((encoding << 10) | (uint16(hasChildren ? 1 : 0) << 9) | (type << 6)
73			| id)
74		+ 1;
75}
76
77
78static inline uint16
79attribute_tag_encoding(uint16 tag)
80{
81	return ((tag - 1) >> 10) & 0x3;
82}
83
84
85static inline bool
86attribute_tag_has_children(uint16 tag)
87{
88	return (((tag - 1) >> 9) & 0x1) != 0;
89}
90
91
92static inline uint16
93attribute_tag_type(uint16 tag)
94{
95	return ((tag - 1) >> 6) & 0x7;
96}
97
98
99static inline uint16
100attribute_tag_id(uint16 tag)
101{
102	return (tag - 1) & 0x3f;
103}
104
105
106}	// namespace BPrivate
107
108}	// namespace V1
109
110}	// namespace BHPKG
111
112}	// namespace BPackageKit
113
114
115#endif	// _PACKAGE__HPKG__V1__PRIVATE__HAIKU_PACKAGE_H_
116