| | 1 | // -*- mode: cpp; mode: fold -*- |
| | 2 | // Description /*{{{*/ |
| | 3 | // $Id: cachefile.cc,v 1.8 2002/04/27 04:28:04 jgg Exp $ |
| | 4 | /* ###################################################################### |
| | 5 | |
| | 6 | CacheFile - Simple wrapper class for opening, generating and whatnot |
| | 7 | |
| | 8 | This class implements a simple 2 line mechanism to open various sorts |
| | 9 | of caches. It can operate as root, as not root, show progress and so on, |
| | 10 | it transparently handles everything necessary. |
| | 11 | |
| | 12 | ##################################################################### */ |
| | 13 | /*}}}*/ |
| | 14 | // Include Files /*{{{*/ |
| | 15 | #include <apt-pkg/cachefile.h> |
| | 16 | #include <apt-pkg/error.h> |
| | 17 | #include <apt-pkg/sourcelist.h> |
| | 18 | #include <apt-pkg/pkgcachegen.h> |
| | 19 | #include <apt-pkg/configuration.h> |
| | 20 | #include <apt-pkg/policy.h> |
| | 21 | #include <apt-pkg/pkgsystem.h> |
| | 22 | #include <apt-pkg/acquire-item.h> |
| | 23 | #include <apt-pkg/fileutl.h> |
| | 24 | |
| | 25 | #include <apti18n.h> |
| | 26 | /*}}}*/ |
| | 27 | |
| | 28 | // CacheFile::CacheFile - Constructor /*{{{*/ |
| | 29 | // --------------------------------------------------------------------- |
| | 30 | /* */ |
| | 31 | pkgCacheFile::pkgCacheFile() : Map(0), Cache(0), DCache(0), Policy(0) |
| | 32 | { |
| | 33 | } |
| | 34 | /*}}}*/ |
| | 35 | // CacheFile::~CacheFile - Destructor /*{{{*/ |
| | 36 | // --------------------------------------------------------------------- |
| | 37 | /* */ |
| | 38 | pkgCacheFile::~pkgCacheFile() |
| | 39 | { |
| | 40 | delete DCache; |
| | 41 | delete Policy; |
| | 42 | delete Cache; |
| | 43 | delete Map; |
| | 44 | _system->UnLock(true); |
| | 45 | } |
| | 46 | /*}}}*/ |
| | 47 | // CacheFile::BuildCaches - Open and build the cache files /*{{{*/ |
| | 48 | // --------------------------------------------------------------------- |
| | 49 | /* */ |
| | 50 | bool pkgCacheFile::BuildCaches(OpProgress &Progress,bool WithLock) |
| | 51 | { |
| | 52 | if (WithLock == true) |
| | 53 | if (_system->Lock() == false) |
| | 54 | return false; |
| | 55 | |
| | 56 | if (_config->FindB("Debug::NoLocking",false) == true) |
| | 57 | WithLock = false; |
| | 58 | |
| | 59 | if (_error->PendingError() == true) |
| | 60 | return false; |
| | 61 | |
| | 62 | // Read the source list |
| | 63 | pkgSourceList List; |
| | 64 | if (List.ReadMainList() == false) |
| | 65 | return _error->Error(_("The list of sources could not be read.")); |
| | 66 | |
| | 67 | // Read the caches |
| | 68 | bool Res = pkgMakeStatusCache(List,Progress,&Map,!WithLock); |
| | 69 | Progress.Done(); |
| | 70 | if (Res == false) |
| | 71 | return _error->Error(_("The package lists or status file could not be parsed or opened.")); |
| | 72 | |
| | 73 | /* This sux, remove it someday */ |
| | 74 | if (_error->empty() == false) |
| | 75 | _error->Warning(_("You may want to run apt-get update to correct these problems")); |
| | 76 | |
| | 77 | Cache = new pkgCache(Map); |
| | 78 | if (_error->PendingError() == true) |
| | 79 | return false; |
| | 80 | return true; |
| | 81 | } |
| | 82 | /*}}}*/ |
| | 83 | // CacheFile::Open - Open the cache files, creating if necessary /*{{{*/ |
| | 84 | // --------------------------------------------------------------------- |
| | 85 | /* */ |
| | 86 | bool pkgCacheFile::Open(OpProgress &Progress,bool WithLock) |
| | 87 | { |
| | 88 | if (BuildCaches(Progress,WithLock) == false) |
| | 89 | return false; |
| | 90 | |
| | 91 | // The policy engine |
| | 92 | Policy = new pkgPolicy(Cache); |
| | 93 | if (_error->PendingError() == true) |
| | 94 | return false; |
| | 95 | if (ReadPinFile(*Policy) == false) |
| | 96 | return false; |
| | 97 | |
| | 98 | // Create the dependency cache |
| | 99 | DCache = new pkgDepCache(Cache,Policy); |
| | 100 | if (_error->PendingError() == true) |
| | 101 | return false; |
| | 102 | |
| | 103 | DCache->Init(&Progress); |
| | 104 | Progress.Done(); |
| | 105 | if (_error->PendingError() == true) |
| | 106 | return false; |
| | 107 | |
| | 108 | return true; |
| | 109 | } |
| | 110 | /*}}}*/ |
| | 111 | |
| | 112 | |
| | 113 | // CacheFile::Close - close the cache files /*{{{*/ |
| | 114 | // --------------------------------------------------------------------- |
| | 115 | /* */ |
| | 116 | void pkgCacheFile::Close() |
| | 117 | { |
| | 118 | delete DCache; |
| | 119 | delete Policy; |
| | 120 | delete Cache; |
| | 121 | delete Map; |
| | 122 | _system->UnLock(true); |
| | 123 | |
| | 124 | Map = 0; |
| | 125 | DCache = 0; |
| | 126 | Policy = 0; |
| | 127 | Cache = 0; |
| | 128 | } |
| | 129 | /*}}}*/ |
projects / apt.git / blame_incremental