#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);

}
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<div class='path'>path: <a href='/guix/log/?id=9e858182581fa17f6248bbbcb9d8742320a42217'>root</a>/<a href='/guix/log/tests?id=9e858182581fa17f6248bbbcb9d8742320a42217'>tests</a>/<a href='/guix/log/tests/guix-pack.sh?id=9e858182581fa17f6248bbbcb9d8742320a42217'>guix-pack.sh</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/guix-pack.sh?id=9e858182581fa17f6248bbbcb9d8742320a42217&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-10-28 01:30:37 +0200'>2023-10-28</span></td><td><a href='/guix/commit/tests/guix-pack.sh?id=ff1146fb4f7254a8f644f89d7af6b4b566528603'>tests: Adjust to cope with glibc graft.</a><span class='msg-avail'>...<span class='msg-tooltip'>This is a followup to 1328c4cca531318e3ed90c6aecb522a5b22a4bcc, which
led to failures for tests that were not prepared to cope with that.

* tests/guix-environment-container.sh (hello_drv_nested): Pass “-E
GUIX_BUILD_OPTIONS” so ‘--no-grafts’ is passed.
* tests/guix-pack.sh (GUIX_BUILD_OPTIONS): Add ‘--no-grafts’.
* tests/transformations.scm ("options-&gt;transformation, with-graft"):
Skip when ‘glibc-final’ has a replacement.

Change-Id: Ia65c9aeb06f524252815b8290a5ca7bf97ee8136
</span></span></td><td>Ludovic Courtès</td></tr>