[apt.git] / apt-inst / contrib / arfile.h

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
// $Id: arfile.h,v 1.2 2001/02/20 07:03:16 jgg Exp $
/* ######################################################################

   AR File - Handle an 'AR' archive
   
   This is a reader for the usual 4.4 BSD AR format. It allows raw
   stream access to a single member at a time. Basically all this class
   provides is header parsing and verification. It is up to the client
   to correctly make use of the stream start/stop points.
   
   ##################################################################### */
									/*}}}*/
#ifndef PKGLIB_ARFILE_H
#define PKGLIB_ARFILE_H


#include <string>
#include <apt-pkg/fileutl.h>

class ARArchive
{
   struct MemberHeader;
   public:
   struct Member;
   
   protected:

   // Linked list of members
   Member *List;
   
   bool LoadHeaders();

   public:
   
   // The stream file
   FileFd &File;

   // Locate a member by name
   const Member *FindMember(const char *Name) const;
   inline Member *Members() { return List; }
   
   ARArchive(FileFd &File);
   ~ARArchive();
};

// A member of the archive
struct ARArchive::Member
{
   // Fields from the header
   string Name;
   unsigned long MTime;
   unsigned long UID;
   unsigned long GID;
   unsigned long Mode;
   unsigned long Size;
   
   // Location of the data.
   unsigned long Start;
   Member *Next;
   
   Member() : Start(0), Next(0) {};
};

#endif
Commit	Line	Data
b2e465d6 AL	1	// -- mode: cpp; mode: fold --
	2	// Description /{{{/
	3	// $Id: arfile.h,v 1.2 2001/02/20 07:03:16 jgg Exp $
	4	/* ######################################################################
	5
	6	AR File - Handle an 'AR' archive
	7
	8	This is a reader for the usual 4.4 BSD AR format. It allows raw
	9	stream access to a single member at a time. Basically all this class
	10	provides is header parsing and verification. It is up to the client
	11	to correctly make use of the stream start/stop points.
	12
	13	##################################################################### */
	14	/}}}/
	15	#ifndef PKGLIB_ARFILE_H
	16	#define PKGLIB_ARFILE_H
	17
b2e465d6 AL	18
	19	#include <string>
	20	#include <apt-pkg/fileutl.h>
	21
	22	class ARArchive
	23	{
	24	struct MemberHeader;
	25	public:
	26	struct Member;
	27
	28	protected:
	29
	30	// Linked list of members
	31	Member *List;
	32
	33	bool LoadHeaders();
	34
	35	public:
	36
	37	// The stream file
	38	FileFd &File;
	39
	40	// Locate a member by name
	41	const Member FindMember(const char Name) const;
d59a67ff	42	inline Member *Members() { return List; }
b2e465d6 AL	43
	44	ARArchive(FileFd &File);
	45	~ARArchive();
	46	};
	47
	48	// A member of the archive
	49	struct ARArchive::Member
	50	{
	51	// Fields from the header
	52	string Name;
	53	unsigned long MTime;
	54	unsigned long UID;
	55	unsigned long GID;
	56	unsigned long Mode;
	57	unsigned long Size;
	58
	59	// Location of the data.
	60	unsigned long Start;
	61	Member *Next;
	62
	63	Member() : Start(0), Next(0) {};
	64	};
	65
	66	#endif