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[ntk/apt.git] / apt-pkg / indexfile.h

diff --git a/apt-pkg/indexfile.h b/apt-pkg/indexfile.h
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+// -*- mode: cpp; mode: fold -*-
+// Description                                                         /*{{{*/
+// $Id: indexfile.h,v 1.2 2001/02/20 07:03:17 jgg Exp $
+/* ######################################################################
+
+   Index File - Abstraction for an index of archive/source file.
+   
+   There are 3 primary sorts of index files, all represented by this 
+   class:
+   
+   Binary index files 
+   Bianry index files decribing the local system
+   Source index files
+   
+   They are all bundled together here, and the interfaces for 
+   sources.list, acquire, cache gen and record parsing all use this class
+   to acess the underlying representation.
+   
+   ##################################################################### */
+                                                                       /*}}}*/
+#ifndef PKGLIB_INDEXFILE_H
+#define PKGLIB_INDEXFILE_H
+
+#ifdef __GNUG__
+#pragma interface "apt-pkg/indexfile.h"
+#endif
+
+#include <string>
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/srcrecords.h>
+#include <apt-pkg/pkgrecords.h>
+    
+class pkgAcquire;
+class pkgCacheGenerator;
+class OpProgress;
+class pkgIndexFile
+{
+   public:
+
+   class Type
+   {
+      public:
+      
+      // Global list of Items supported
+      static Type **GlobalList;
+      static unsigned long GlobalListLen;
+      static Type *GetType(const char *Type);
+
+      const char *Label;
+
+      virtual pkgRecords::Parser *CreatePkgParser(pkgCache::PkgFileIterator File) const {return 0;};
+      Type();
+   };
+
+   virtual const Type *GetType() const = 0;
+   
+   // Return descriptive strings of various sorts
+   virtual string ArchiveInfo(pkgCache::VerIterator Ver) const;
+   virtual string SourceInfo(pkgSrcRecords::Parser const &Record,
+                            pkgSrcRecords::File const &File) const;
+   virtual string Describe() const = 0;   
+
+   // Interface for acquire
+   virtual string ArchiveURI(string File) const {return string();};
+   virtual bool GetIndexes(pkgAcquire *Owner) const;
+
+   // Interface for the record parsers
+   virtual pkgSrcRecords::Parser *CreateSrcParser() const {return 0;};
+   
+   // Interface for the Cache Generator
+   virtual bool Exists() const = 0;
+   virtual bool HasPackages() const = 0;
+   virtual unsigned long Size() const = 0;
+   virtual bool Merge(pkgCacheGenerator &Gen,OpProgress &Prog) const {return false;};
+   virtual pkgCache::PkgFileIterator FindInCache(pkgCache &Cache) const;
+   
+   virtual ~pkgIndexFile() {};
+};
+
+#endif