implement reverse_iterators for cachesets

[apt.git] / apt-pkg / cachefile.cc

diff --git a/apt-pkg/cachefile.cc b/apt-pkg/cachefile.cc
index b60b1cc0f8e1e90dd80becd541eae3ccf37daeb3..690776266c96e3d5741688f1b2632fe605300bc8 100644 (file)
--- a/apt-pkg/cachefile.cc
+++ b/apt-pkg/cachefile.cc
@@ -21,15 +21,23 @@
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/policy.h>
 #include <apt-pkg/pkgsystem.h>
-#include <apt-pkg/acquire-item.h>
 #include <apt-pkg/fileutl.h>
+#include <apt-pkg/progress.h>
+#include <apt-pkg/depcache.h>
+#include <apt-pkg/mmap.h>
+#include <apt-pkg/pkgcache.h>
+
+#include <string.h>
+#include <unistd.h>
+#include <string>
+#include <vector>
 
 #include <apti18n.h>
                                                                        /*}}}*/
 // CacheFile::CacheFile - Constructor                                  /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-pkgCacheFile::pkgCacheFile() : Map(NULL), Cache(NULL), DCache(NULL),
+pkgCacheFile::pkgCacheFile() : d(NULL), Map(NULL), Cache(NULL), DCache(NULL),
                                SrcList(NULL), Policy(NULL)
 {
 }
@@ -57,8 +65,8 @@ bool pkgCacheFile::BuildCaches(OpProgress *Progress, bool WithLock)
 
    if (_config->FindB("pkgCacheFile::Generate", true) == false)
    {
-      Map = new MMap(*new FileFd(_config->FindFile("Dir::Cache::pkgcache"),
-                    FileFd::ReadOnly),MMap::Public|MMap::ReadOnly);
+      FileFd file(_config->FindFile("Dir::Cache::pkgcache"), FileFd::ReadOnly);
+      Map = new MMap(file, MMap::Public|MMap::ReadOnly);
       Cache = new pkgCache(Map);
       if (_error->PendingError() == true)
          return false;
@@ -98,7 +106,7 @@ bool pkgCacheFile::BuildCaches(OpProgress *Progress, bool WithLock)
 // CacheFile::BuildSourceList - Open and build all relevant sources.list/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool pkgCacheFile::BuildSourceList(OpProgress *Progress)
+bool pkgCacheFile::BuildSourceList(OpProgress * /*Progress*/)
 {
    if (SrcList != NULL)
       return true;
@@ -112,7 +120,7 @@ bool pkgCacheFile::BuildSourceList(OpProgress *Progress)
 // CacheFile::BuildPolicy - Open and build all relevant preferences    /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool pkgCacheFile::BuildPolicy(OpProgress *Progress)
+bool pkgCacheFile::BuildPolicy(OpProgress * /*Progress*/)
 {
    if (Policy != NULL)
       return true;
@@ -135,6 +143,9 @@ bool pkgCacheFile::BuildDepCache(OpProgress *Progress)
    if (DCache != NULL)
       return true;
 
+   if (BuildPolicy(Progress) == false)
+      return false;
+
    DCache = new pkgDepCache(Cache,Policy);
    if (_error->PendingError() == true)
       return false;
@@ -165,6 +176,54 @@ bool pkgCacheFile::Open(OpProgress *Progress, bool WithLock)
    return true;
 }
                                                                        /*}}}*/
+// CacheFile::RemoveCaches - remove all cache files from disk          /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void pkgCacheFile::RemoveCaches()
+{
+   std::string const pkgcache = _config->FindFile("Dir::cache::pkgcache");
+   std::string const srcpkgcache = _config->FindFile("Dir::cache::srcpkgcache");
+
+   if (pkgcache.empty() == false && RealFileExists(pkgcache) == true)
+      unlink(pkgcache.c_str());
+   if (srcpkgcache.empty() == false && RealFileExists(srcpkgcache) == true)
+      unlink(srcpkgcache.c_str());
+   if (pkgcache.empty() == false)
+   {
+      std::string cachedir = flNotFile(pkgcache);
+      std::string cachefile = flNotDir(pkgcache);
+      if (cachedir.empty() != true && cachefile.empty() != true && DirectoryExists(cachedir) == true)
+      {
+        cachefile.append(".");
+        std::vector<std::string> caches = GetListOfFilesInDir(cachedir, false);
+        for (std::vector<std::string>::const_iterator file = caches.begin(); file != caches.end(); ++file)
+        {
+           std::string nuke = flNotDir(*file);
+           if (strncmp(cachefile.c_str(), nuke.c_str(), cachefile.length()) != 0)
+              continue;
+           unlink(file->c_str());
+        }
+      }
+   }
+
+   if (srcpkgcache.empty() == true)
+      return;
+
+   std::string cachedir = flNotFile(srcpkgcache);
+   std::string cachefile = flNotDir(srcpkgcache);
+   if (cachedir.empty() == true || cachefile.empty() == true || DirectoryExists(cachedir) == false)
+      return;
+   cachefile.append(".");
+   std::vector<std::string> caches = GetListOfFilesInDir(cachedir, false);
+   for (std::vector<std::string>::const_iterator file = caches.begin(); file != caches.end(); ++file)
+   {
+      std::string nuke = flNotDir(*file);
+      if (strncmp(cachefile.c_str(), nuke.c_str(), cachefile.length()) != 0)
+        continue;
+      unlink(file->c_str());
+   }
+}
+                                                                       /*}}}*/
 // CacheFile::Close - close the cache files                            /*{{{*/
 // ---------------------------------------------------------------------
 /* */