aboutsummaryrefslogtreecommitdiff
A big thanks to Eelco Dolstra, who designed and implemented Nix.
Transposing functional programming discipline to package management
proved to be inspiring and fruitful.

Thanks to the following people who contributed to GNU Guix through
suggestions, bug reports, patches, internationalization, or general
infrastructure help:

	    Lluís Batlle i Rossell <viric@viric.name>
          Sylvain Beucler <beuc@beuc.net>
	   Carlos Carleos <carleos@uniovi.es>
	   Felipe Castro <fefcas@gmail.com>
	   Daniel Clark <dclark@pobox.com>
	Alexandru Cojocaru <xojoc@gmx.com>
	    Aleix Conchillo Flaqué <aconchillo@gmail.com>
          Malcolm Cook <MEC@stowers.org>
           Thomas Danckaert <thomas.danckaert@gmail.com>
	   Rafael Ferreira <rafael.f.f1@gmail.com>
	Christian Grothoff <christian@grothoff.org>
             Eric Hanchrow <eric.hanchrow@gmail.com>
           Konrad Hinsen <konrad.hinsen@fastmail.net>
          Brandon Invergo <brandon@gnu.org>
           Anders Jonsson <anders.jonsson@norsjovallen.se>
	  Jeffrin Jose <ahiliation@yahoo.co.in>
	          Kete <kete@ninthfloor.org>
           Daniel Kochmański <dkochmanski@hellsgate.pl>
	  Matthew Lien <bluet@bluet.org>
             Dave Love <fx@gnu.org>
            Chris Marusich <cmmarusich@gmail.com>
            Niels Möller <nisse@lysator.liu.se>
          Cyprien Nicolas <cyprien@nicolas.tf>
	   Yutaka Niibe <gniibe@fsij.org>
           Andrei Osipov <andrspv@gmail.com>
                  Petter <petter@mykolab.ch>
             Adam Pribyl <pribyl@lowlevel.cz>
            Pjotr Prins <pjotr.public12@thebird.nl>
  Yakkala Yagnesh Raghava <hi@yagnesh.org>
           Joshua Randall <jcrandall@alum.mit.edu>
      Bruno Félix Rezende Ribeiro <oitofelix@gnu.org>
	    Benno Schulenberg <coordinator@translationproject.org>
           Thomas Schwinge <thomas@codesourcery.com>
        Alexander Shendi <Alexander.Shendi@web.de>
	     Alen Skondro <askondro@gmail.com>
              Jan Synáček <jan.synacek@gmail.com>
	 Matthias Wachs <wachs@net.in.tum.de>
        Christine Lemmer-Webber <cwebber@dustycloud.org>
           Philip Woods <elzairthesorcerer@gmail.com>

GNU Guix also includes non-software works.  Thanks to the following
people who contributed the logo and general artwork and themes:

           Nikita Karetnikov <nikita@karetnikov.org>
           Felipe López <felipe.lopez@openmailbox.org>
generated by cgit
' href='#n70'>70 71 72 73 74 
#pragma once

#include "types.hh"
#include "serialise.hh"


namespace nix {


/* dumpPath creates a Nix archive of the specified path.  The format
   is as follows:

   IF path points to a REGULAR FILE:
     dump(path) = attrs(
       [ ("type", "regular")
       , ("contents", contents(path))
       ])

   IF path points to a DIRECTORY:
     dump(path) = attrs(
       [ ("type", "directory")
       , ("entries", concat(map(f, sort(entries(path)))))
       ])
       where f(fn) = attrs(
         [ ("name", fn)
         , ("file", dump(path + "/" + fn))
         ])

   where:

     attrs(as) = concat(map(attr, as)) + encN(0)
     attrs((a, b)) = encS(a) + encS(b)

     encS(s) = encN(len(s)) + s + (padding until next 64-bit boundary)

     encN(n) = 64-bit little-endian encoding of n.

     contents(path) = the contents of a regular file.

     sort(strings) = lexicographic sort by 8-bit value (strcmp).

     entries(path) = the entries of a directory, without `.' and
     `..'.

     `+' denotes string concatenation. */

struct PathFilter
{
    virtual ~PathFilter() { }
    virtual bool operator () (const Path & path) { return true; }
};

extern PathFilter defaultPathFilter;

void dumpPath(const Path & path, Sink & sink,
    PathFilter & filter = defaultPathFilter);

struct ParseSink
{
    virtual void createDirectory(const Path & path) { };

    virtual void createRegularFile(const Path & path) { };
    virtual void isExecutable() { };
    virtual void preallocateContents(unsigned long long size) { };
    virtual void receiveContents(unsigned char * data, unsigned int len) { };

    virtual void createSymlink(const Path & path, const string & target) { };
};

void parseDump(ParseSink & sink, Source & source);

void restorePath(const Path & path, Source & source);

}
generated by cgit