From 3f8621c5effb167a51944b86334867e2fe8fedb3 Mon Sep 17 00:00:00 2001
From: David Kalnischkies <kalnischkies@gmail.com>
Date: Fri, 4 Jun 2010 22:58:57 +0200
Subject: store also the SourceList we use internally for export

---
 apt-pkg/cachefile.cc | 58 +++++++++++++++++++++++++++++++++++++++++-----------
 apt-pkg/cachefile.h  | 15 +++++++++++++-
 2 files changed, 60 insertions(+), 13 deletions(-)

(limited to 'apt-pkg')

diff --git a/apt-pkg/cachefile.cc b/apt-pkg/cachefile.cc
index b0f8bc424..01598386c 100644
--- a/apt-pkg/cachefile.cc
+++ b/apt-pkg/cachefile.cc
@@ -27,7 +27,8 @@
 // CacheFile::CacheFile - Constructor					/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-pkgCacheFile::pkgCacheFile() : Map(0), Cache(0), DCache(0), Policy(0)
+pkgCacheFile::pkgCacheFile() : Map(NULL), Cache(NULL), DCache(NULL),
+				Policy(NULL), SrcList(NULL)
 {
 }
 									/*}}}*/
@@ -38,16 +39,30 @@ pkgCacheFile::~pkgCacheFile()
 {
    delete DCache;
    delete Policy;
+   delete SrcList;
    delete Cache;
    delete Map;
    _system->UnLock(true);
-}   
+}
 									/*}}}*/
 // CacheFile::BuildCaches - Open and build the cache files		/*{{{*/
 // ---------------------------------------------------------------------
 /* */
 bool pkgCacheFile::BuildCaches(OpProgress *Progress, bool WithLock)
 {
+   if (Cache != NULL)
+      return true;
+
+   if (_config->FindB("pkgCacheFile::Generate", true) == false)
+   {
+      Map = new MMap(*new FileFd(_config->FindFile("Dir::Cache::pkgcache"),
+		     FileFd::ReadOnly),MMap::Public|MMap::ReadOnly);
+      Cache = new pkgCache(Map);
+      if (_error->PendingError() == true)
+         return false;
+      return true;
+   }
+
    const bool ErrorWasEmpty = _error->empty();
    if (WithLock == true)
       if (_system->Lock() == false)
@@ -58,14 +73,11 @@ bool pkgCacheFile::BuildCaches(OpProgress *Progress, bool WithLock)
       
    if (_error->PendingError() == true)
       return false;
-   
-   // Read the source list
-   pkgSourceList List;
-   if (List.ReadMainList() == false)
-      return _error->Error(_("The list of sources could not be read."));
+
+   BuildSourceList(Progress);
 
    // Read the caches
-   bool Res = pkgCacheGenerator::MakeStatusCache(List,Progress,&Map,!WithLock);
+   bool Res = pkgCacheGenerator::MakeStatusCache(*SrcList,Progress,&Map,!WithLock);
    if (Progress != NULL)
       Progress->Done();
    if (Res == false)
@@ -81,11 +93,28 @@ bool pkgCacheFile::BuildCaches(OpProgress *Progress, bool WithLock)
    return true;
 }
 									/*}}}*/
+// CacheFile::BuildSourceList - Open and build all relevant sources.list/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgCacheFile::BuildSourceList(OpProgress *Progress)
+{
+   if (SrcList != NULL)
+      return true;
+
+   SrcList = new pkgSourceList();
+   if (SrcList->ReadMainList() == false)
+      return _error->Error(_("The list of sources could not be read."));
+   return true;
+}
+									/*}}}*/
 // CacheFile::BuildPolicy - Open and build all relevant preferences	/*{{{*/
 // ---------------------------------------------------------------------
 /* */
 bool pkgCacheFile::BuildPolicy(OpProgress *Progress)
 {
+   if (Policy != NULL)
+      return true;
+
    Policy = new pkgPolicy(Cache);
    if (_error->PendingError() == true)
       return false;
@@ -101,6 +130,9 @@ bool pkgCacheFile::BuildPolicy(OpProgress *Progress)
 /* */
 bool pkgCacheFile::BuildDepCache(OpProgress *Progress)
 {
+   if (DCache != NULL)
+      return true;
+
    DCache = new pkgDepCache(Cache,Policy);
    if (_error->PendingError() == true)
       return false;
@@ -139,12 +171,14 @@ void pkgCacheFile::Close()
    delete DCache;
    delete Policy;
    delete Cache;
+   delete SrcList;
    delete Map;
    _system->UnLock(true);
 
-   Map = 0;
-   DCache = 0;
-   Policy = 0;
-   Cache = 0;
+   Map = NULL;
+   DCache = NULL;
+   Policy = NULL;
+   Cache = NULL;
+   SrcList = NULL;
 }
 									/*}}}*/
diff --git a/apt-pkg/cachefile.h b/apt-pkg/cachefile.h
index b75a7dbe4..1647aff8e 100644
--- a/apt-pkg/cachefile.h
+++ b/apt-pkg/cachefile.h
@@ -23,6 +23,7 @@
 #include <apt-pkg/sourcelist.h>
 
 class pkgPolicy;
+class pkgSourceList;
 class pkgCacheFile
 {
    protected:
@@ -31,6 +32,7 @@ class pkgCacheFile
    pkgCache *Cache;
    pkgDepCache *DCache;
    pkgPolicy *Policy;
+   pkgSourceList *SrcList;
 
    public:
 
@@ -39,6 +41,10 @@ class pkgCacheFile
    inline operator pkgCache *() {return Cache;};
    inline operator pkgDepCache &() {return *DCache;};
    inline operator pkgDepCache *() {return DCache;};
+   inline operator pkgPolicy &() {return *Policy;};
+   inline operator pkgPolicy *() {return Policy;};
+   inline operator pkgSourceList &() {return *SrcList;};
+   inline operator pkgSourceList *() {return SrcList;};
    inline pkgDepCache *operator ->() {return DCache;};
    inline pkgDepCache &operator *() {return *DCache;};
    inline pkgDepCache::StateCache &operator [](pkgCache::PkgIterator const &I) {return (*DCache)[I];};
@@ -46,12 +52,19 @@ class pkgCacheFile
 
    bool BuildCaches(OpProgress *Progress = NULL,bool WithLock = true);
    __deprecated bool BuildCaches(OpProgress &Progress,bool const &WithLock = true) { return BuildCaches(&Progress, WithLock); };
+   bool BuildSourceList(OpProgress *Progress = NULL);
    bool BuildPolicy(OpProgress *Progress = NULL);
    bool BuildDepCache(OpProgress *Progress = NULL);
    bool Open(OpProgress *Progress = NULL, bool WithLock = true);
+   inline bool ReadOnlyOpen(OpProgress *Progress = NULL) { return Open(Progress, false); };
    __deprecated bool Open(OpProgress &Progress,bool const &WithLock = true) { return Open(&Progress, WithLock); };
    void Close();
-   
+
+   inline pkgCache* GetPkgCache() { BuildCaches(NULL, false); return Cache; };
+   inline pkgDepCache* GetDepCache() { BuildDepCache(); return DCache; };
+   inline pkgPolicy* GetPolicy() { BuildPolicy(); return Policy; };
+   inline pkgSourceList* GetSourceList() { BuildSourceList(); return SrcList; };
+
    pkgCacheFile();
    virtual ~pkgCacheFile();
 };
-- 
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