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[apt.git] / apt-inst / deb / debfile.h

diff --git a/apt-inst/deb/debfile.h b/apt-inst/deb/debfile.h
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+// -*- mode: cpp; mode: fold -*-
+// Description                                                         /*{{{*/
+// $Id: debfile.h,v 1.2 2001/02/20 07:03:17 jgg Exp $
+/* ######################################################################
+
+   Debian Archive File (.deb)
+
+   This Class handles all the operations performed directly on .deb 
+   files. It makes use of the AR and TAR classes to give the necessary
+   external interface.
+   
+   There are only two things that can be done with a raw package, 
+   extract it's control information and extract the contents itself. 
+
+   This should probably subclass an as-yet unwritten super class to
+   produce a generic archive mechanism.
+  
+   The memory control file extractor is useful to extract a single file
+   into memory from the control.tar.gz
+   
+   ##################################################################### */
+                                                                       /*}}}*/
+#ifndef PKGLIB_DEBFILE_H
+#define PKGLIB_DEBFILE_H
+
+#ifdef __GNUG__
+#pragma interface "apt-pkg/debfile.h"
+#endif
+
+#include <apt-pkg/arfile.h>
+#include <apt-pkg/database.h>
+#include <apt-pkg/dirstream.h>
+#include <apt-pkg/tagfile.h>
+
+class debDebFile
+{
+   protected:
+   
+   FileFd &File;
+   ARArchive AR;
+   
+   bool CheckMember(const char *Name);
+   
+   public:
+
+   class ControlExtract;
+   class MemControlExtract;
+   
+   bool ExtractControl(pkgDataBase &DB);
+   bool ExtractArchive(pkgDirStream &Stream);
+   pkgCache::VerIterator MergeControl(pkgDataBase &DB);
+   const ARArchive::Member *GotoMember(const char *Name);
+   inline FileFd &GetFile() {return File;};
+   
+   debDebFile(FileFd &File);
+};
+
+class debDebFile::ControlExtract : public pkgDirStream
+{
+   public:
+   
+   virtual bool DoItem(Item &Itm,int &Fd);
+};
+
+class debDebFile::MemControlExtract : public pkgDirStream
+{
+   bool IsControl;
+   
+   public:
+   
+   char *Control;
+   pkgTagSection Section;
+   unsigned long Length;
+   string Member;
+   
+   // Members from DirStream
+   virtual bool DoItem(Item &Itm,int &Fd);
+   virtual bool Process(Item &Itm,const unsigned char *Data,
+                       unsigned long Size,unsigned long Pos);
+   
+
+   // Helpers
+   bool Read(debDebFile &Deb);
+   bool TakeControl(const void *Data,unsigned long Size);
+      
+   MemControlExtract() : IsControl(false), Control(0), Length(0), Member("control") {};
+   MemControlExtract(string Member) : IsControl(false), Control(0), Length(0), Member(Member) {};
+   ~MemControlExtract() {delete [] Control;};   
+};
+                                                                       /*}}}*/
+
+#endif