store source name and version in binary cache

Accessing the package records to acquire this information is pretty
costly, so that information wasn't used so far in many places. The most
noticeable user by far is EDSP at the moment, but there are ideas to
change that which this commit tries to enable.

1 files changed, 51 insertions, 0 deletions

diff --git a/apt-pkg/deb/deblistparser.cc b/apt-pkg/deb/deblistparser.cc
index 9919d2036..103b126de 100644
--- a/apt-pkg/deb/deblistparser.cc
+++ b/apt-pkg/deb/deblistparser.cc
@@ -141,6 +141,57 @@ bool debListParser::NewVersion(pkgCache::VerIterator &Ver)
       map_stringitem_t const idx = StoreString(pkgCacheGenerator::SECTION, Start, Stop - Start);
       Ver->Section = idx;
    }
+   // Parse the source package name
+   pkgCache::GrpIterator const G = Ver.ParentPkg().Group();
+   Ver->SourcePkgName = G->Name;
+   Ver->SourceVerStr = Ver->VerStr;
+   if (Section.Find("Source",Start,Stop) == true)
+   {
+      const char * const Space = (const char * const) memchr(Start, ' ', Stop - Start);
+      pkgCache::VerIterator V;
+
+      if (Space != NULL)
+      {
+	 Stop = Space;
+	 const char * const Open = (const char * const) memchr(Space, '(', Stop - Space);
+	 if (likely(Open != NULL))
+	 {
+	    const char * const Close = (const char * const) memchr(Open, ')', Stop - Open);
+	    if (likely(Close != NULL))
+	    {
+	       std::string const version(Open + 1, (Close - Open) - 1);
+	       if (version != Ver.VerStr())
+	       {
+		  map_stringitem_t const idx = StoreString(pkgCacheGenerator::VERSION, version);
+		  Ver->SourceVerStr = idx;
+	       }
+	    }
+	 }
+      }
+
+      std::string const pkgname(Start, Stop - Start);
+      if (pkgname != G.Name())
+      {
+	 for (pkgCache::PkgIterator P = G.PackageList(); P.end() == false; P = G.NextPkg(P))
+	 {
+	    for (V = P.VersionList(); V.end() == false; ++V)
+	    {
+	       if (pkgname == V.SourcePkgName())
+	       {
+		  Ver->SourcePkgName = V->SourcePkgName;
+		  break;
+	       }
+	    }
+	    if (V.end() == false)
+	       break;
+	 }
+	 if (V.end() == true)
+	 {
+	    map_stringitem_t const idx = StoreString(pkgCacheGenerator::PKGNAME, pkgname);
+	    Ver->SourcePkgName = idx;
+	 }
+      }
+   }
 
    Ver->MultiArch = ParseMultiArch(true);
    // Archive Size