* Implement EDSP in libapt-pkg so that all front-ends which

  use the internal resolver can now be used also with external
  ones as the usage is hidden in between the old API
* provide two edsp solvers in apt-utils:
  - 'dump' to quickly output a complete scenario and
  - 'apt' to use the internal as an external resolver

1 files changed, 78 insertions, 0 deletions

diff --git a/apt-pkg/edsp/edspindexfile.cc b/apt-pkg/edsp/edspindexfile.cc
new file mode 100644
index 000000000..f5881e663
--- /dev/null
+++ b/apt-pkg/edsp/edspindexfile.cc
@@ -0,0 +1,78 @@
+// -*- mode: cpp; mode: fold -*-
+// Description								/*{{{*/
+/* ######################################################################
+   The scenario file is designed to work as an intermediate file between
+   APT and the resolver. Its on propose very similar to a dpkg status file
+   ##################################################################### */
+									/*}}}*/
+// Include Files							/*{{{*/
+#include <apt-pkg/edspindexfile.h>
+#include <apt-pkg/edsplistparser.h>
+#include <apt-pkg/sourcelist.h>
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/progress.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/acquire-item.h>
+
+#include <sys/stat.h>
+									/*}}}*/
+
+// edspIndex::edspIndex - Constructor					/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+edspIndex::edspIndex(string File) : debStatusIndex(File)
+{
+}
+									/*}}}*/
+// StatusIndex::Merge - Load the index file into a cache		/*{{{*/
+bool edspIndex::Merge(pkgCacheGenerator &Gen,OpProgress *Prog) const
+{
+   FileFd Pkg;
+   if (File != "stdin")
+      Pkg.Open(File, FileFd::ReadOnly);
+   else
+      Pkg.OpenDescriptor(STDIN_FILENO, FileFd::ReadOnly);
+   if (_error->PendingError() == true)
+      return false;
+   edspListParser Parser(&Pkg);
+   if (_error->PendingError() == true)
+      return false;
+
+   if (Prog != NULL)
+      Prog->SubProgress(0,File);
+   if (Gen.SelectFile(File,string(),*this) == false)
+      return _error->Error("Problem with SelectFile %s",File.c_str());
+
+   // Store the IMS information
+   pkgCache::PkgFileIterator CFile = Gen.GetCurFile();
+   struct stat St;
+   if (fstat(Pkg.Fd(),&St) != 0)
+      return _error->Errno("fstat","Failed to stat");
+   CFile->Size = St.st_size;
+   CFile->mtime = St.st_mtime;
+   CFile->Archive = Gen.WriteUniqString("edsp::scenario");
+
+   if (Gen.MergeList(Parser) == false)
+      return _error->Error("Problem with MergeList %s",File.c_str());
+   return true;
+}
+									/*}}}*/
+// Index File types for APT						/*{{{*/
+class edspIFType: public pkgIndexFile::Type
+{
+   public:
+   virtual pkgRecords::Parser *CreatePkgParser(pkgCache::PkgFileIterator File) const
+   {
+      // we don't have a record parser for this type as the file is not presistent
+      return NULL;
+   };
+   edspIFType() {Label = "EDSP scenario file";};
+};
+static edspIFType _apt_Universe;
+
+const pkgIndexFile::Type *edspIndex::GetType() const
+{
+   return &_apt_Universe;
+}
+									/*}}}*/