1 | /* rpackagecache.cc - package cache wrapper |
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2 | * |
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3 | * Copyright (c) 2000-2003 Conectiva S/A |
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4 | * |
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5 | * Author: Alfredo K. Kojima <kojima@conectiva.com.br> |
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6 | * |
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7 | * This program is free software; you can redistribute it and/or |
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8 | * modify it under the terms of the GNU General Public License as |
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9 | * published by the Free Software Foundation; either version 2 of the |
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10 | * License, or (at your option) any later version. |
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11 | * |
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12 | * This program is distributed in the hope that it will be useful, |
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | * GNU General Public License for more details. |
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16 | * |
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17 | * You should have received a copy of the GNU General Public License |
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18 | * along with this program; if not, write to the Free Software |
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19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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20 | * USA |
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21 | */ |
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22 | |
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23 | |
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24 | #include "config.h" |
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25 | |
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26 | #include "rpackagecache.h" |
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27 | #include "rconfiguration.h" |
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28 | #include "i18n.h" |
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29 | |
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30 | #include <assert.h> |
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31 | #include <algorithm> |
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32 | #include <apt-pkg/error.h> |
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33 | #include <apt-pkg/sourcelist.h> |
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34 | #include <apt-pkg/pkgcachegen.h> |
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35 | #include <apt-pkg/configuration.h> |
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36 | #include <apt-pkg/policy.h> |
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37 | |
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38 | |
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39 | bool RPkgPolicy::IsImportantDep(pkgCache::DepIterator dep) |
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40 | { |
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41 | if(pkgPolicy::IsImportantDep(dep)) |
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42 | return true; |
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43 | |
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44 | if(dep->Type==pkgCache::Dep::Recommends) { |
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45 | return _config->FindB("Synaptic::UseRecommends", false); |
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46 | } else if(dep->Type==pkgCache::Dep::Suggests) { |
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47 | return _config->FindB("Synaptic::UseSuggests", false); |
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48 | } else { |
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49 | return false; |
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50 | } |
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51 | } |
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52 | |
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53 | bool RPackageCache::open(OpProgress &progress, bool locking) |
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54 | { |
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55 | if(locking) |
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56 | lock(); |
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57 | |
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58 | if (_error->PendingError()) |
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59 | return false; |
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60 | |
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61 | // delete any old structures |
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62 | if(_dcache != NULL) |
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63 | delete _dcache; |
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64 | if(_map != NULL) |
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65 | delete _map; |
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66 | |
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67 | // Read the source list |
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68 | //pkgSourceList list; |
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69 | assert(_list != NULL); |
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70 | if (!_list->ReadMainList()) |
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71 | return _error->Error(_("The list of sources could not be read.\n\ |
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72 | Go to the repository dialog to correct the problem.")); |
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73 | |
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74 | if(locking) |
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75 | pkgMakeStatusCache(*_list, progress); |
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76 | else |
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77 | pkgMakeStatusCache(*_list, progress, 0, true); |
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78 | |
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79 | if (_error->PendingError()) |
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80 | return _error-> |
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81 | Error(_ |
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82 | ("The package lists or status file could not be parsed or opened.")); |
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83 | |
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84 | // Open the cache file |
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85 | FileFd File(_config->FindFile("Dir::Cache::pkgcache"), FileFd::ReadOnly); |
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86 | if (_error->PendingError()) |
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87 | return false; |
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88 | |
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89 | _map = new MMap(File, MMap::Public | MMap::ReadOnly); |
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90 | if (_error->PendingError()) |
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91 | return false; |
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92 | |
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93 | // Create the dependency cache |
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94 | _cache = new pkgCache(_map); |
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95 | if (_error->PendingError()) |
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96 | return false; |
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97 | |
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98 | // The policy engine |
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99 | if (_policy != NULL) |
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100 | delete _policy; |
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101 | _policy = new RPkgPolicy(_cache); |
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102 | if (_error->PendingError() == true) |
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103 | return false; |
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104 | if (ReadPinFile(*_policy) == false) |
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105 | return false; |
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106 | |
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107 | if (ReadPinFile(*_policy, RStateDir() + "/preferences") == false) |
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108 | return false; |
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109 | |
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110 | _dcache = new pkgDepCache(_cache, _policy); |
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111 | |
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112 | _dcache->Init(&progress); |
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113 | |
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114 | //progress.Done(); |
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115 | if (_error->PendingError()) |
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116 | return false; |
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117 | |
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118 | // Check that the system is OK |
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119 | if (_dcache->DelCount() != 0 || _dcache->InstCount() != 0) |
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120 | return _error->Error(_("Internal Error, non-zero counts")); |
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121 | |
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122 | return true; |
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123 | } |
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124 | |
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125 | vector<string> RPackageCache::getPolicyArchives(bool filenames_only=false) |
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126 | { |
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127 | //std::cout << "RPackageCache::getPolicyComponents() " << std::endl; |
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128 | |
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129 | vector<string> archives; |
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130 | for (pkgCache::PkgFileIterator F = _cache->FileBegin(); F.end() == false; |
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131 | F++) { |
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132 | pkgIndexFile *Indx; |
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133 | _list->FindIndex(F, Indx); |
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134 | _system->FindIndex(F, Indx); |
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135 | |
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136 | if(filenames_only) { |
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137 | if(F.FileName()) |
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138 | archives.push_back(F.FileName()); |
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139 | } else { |
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140 | if (!F.RelStr().empty()) { |
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141 | //printf("Archive: %s, Origin: %s, Component: %s, Filename: %s\n", |
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142 | // F.Archive(), F.Origin(), F.Component(), F.FileName()); |
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143 | if (F.Archive() != NULL) { |
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144 | if (find(archives.begin(), archives.end(), F.Archive()) |
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145 | == archives.end()) { |
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146 | archives.push_back(F.Archive()); |
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147 | } |
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148 | } |
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149 | } |
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150 | } |
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151 | } |
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152 | return archives; |
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153 | } |
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154 | |
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155 | |
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156 | bool RPackageCache::lock() |
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157 | { |
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158 | if (_locked) |
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159 | return true; |
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160 | |
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161 | _system->Lock(); |
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162 | _locked = true; |
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163 | |
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164 | //FIXME: should depend on the result of _system->lock() |
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165 | return true; |
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166 | } |
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167 | |
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168 | |
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169 | void RPackageCache::releaseLock() |
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170 | { |
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171 | if (!_locked) |
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172 | return; |
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173 | |
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174 | _system->UnLock(); |
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175 | _locked = false; |
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176 | } |
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