headers/private/package/hpkg/v1/HPKGDefsPrivate.h

   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
  14 namespace BPackageKit {
  15
  16 namespace BHPKG {
  17
  18 namespace V1 {
  19
  20 namespace BPrivate {
  21
  22
  23 // header
  24 struct 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
  47 struct 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)
  69 static inline uint16
  70 compose_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
  78 static inline uint16
  79 attribute_tag_encoding(uint16 tag)
  80 {
  81         return ((tag - 1) >> 10) & 0x3;
  82 }
  83
  84
  85 static inline bool
  86 attribute_tag_has_children(uint16 tag)
  87 {
  88         return (((tag - 1) >> 9) & 0x1) != 0;
  89 }
  90
  91
  92 static inline uint16
  93 attribute_tag_type(uint16 tag)
  94 {
  95         return ((tag - 1) >> 6) & 0x7;
  96 }
  97
  98
  99 static inline uint16
 100 attribute_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_