#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);

}
option value='author'>author</option>
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<div class='path'>path: <a href='/guix/log/?id=a9585eea7515cd80228ef32684eb6c5a9e2a96da'>root</a>/<a href='/guix/log/gnu?id=a9585eea7515cd80228ef32684eb6c5a9e2a96da'>gnu</a>/<a href='/guix/log/gnu/packages?id=a9585eea7515cd80228ef32684eb6c5a9e2a96da'>packages</a>/<a href='/guix/log/gnu/packages/fonts.scm?id=a9585eea7515cd80228ef32684eb6c5a9e2a96da'>fonts.scm</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/gnu/packages/fonts.scm?id=a9585eea7515cd80228ef32684eb6c5a9e2a96da&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-03-26 18:06:52 -0400'>2023-03-26</span></td><td><a href='/guix/commit/gnu/packages/fonts.scm?id=89c8bba0a6cb164987c0e51037a106532e783aa9'>gnu: font-sil-charis: Update to 6.2.0.</a><span class='msg-avail'>...</span></td><td>Stefan Baums</td></tr>
<tr><td><span title='2023-03-26 18:06:52 -0400'>2023-03-26</span></td><td><a href='/guix/commit/gnu/packages/fonts.scm?id=2b54eca70e1bf637cb32a4aae4cd9d99f8689eb1'>gnu: font-sil-andika: Update to 6.2.0.</a><span class='msg-avail'>...</span></td><td>Stefan Baums</td></tr>
<tr><td><span title='2023-03-26 18:06:44 -0400'>2023-03-26</span></td><td><a href='/guix/commit/gnu/packages/fonts.scm?id=30b2a2ab9e2584100893834edcd9e95dec635421'>gnu: font-sil-gentium: Update to 6.2.0.</a><span class='msg-avail'>...</span></td><td>Stefan Baums</td></tr>
<tr><td><span title='2023-03-13 15:08:34 +0100'>2023-03-13</span></td><td><a href='/guix/commit/gnu/packages/fonts.scm?id=a80f006285e41bb57caaa7bb1a7bc97d7f842fc7'>gnu: Add font-iosevka-ss09.</a><span class='msg-avail'>...</span></td><td>Paul A. Patience</td></tr>
<tr><td><span title='2023-03-13 15:08:34 +0100'>2023-03-13</span></td><td><a href='/guix/commit/gnu/packages/fonts.scm?id=83f5c56b6752c40853c41261bca0dc6681b97139'>gnu: Add font-iosevka-ss08.</a><span class='msg-avail'>...</span></td><td>Paul A. Patience</td></tr>
<tr><td><span title='2023-03-13 15:08:34 +0100'>2023-03-13</span></td><td><a href='/guix/commit/gnu/packages/fonts.scm?id=8b817bf46efccdf1cb9d81c55baf6230644600ba'>gnu: font-iosevka: Update to 20.0.0.</a><span class='msg-avail'>...</span></td><td>Paul A. Patience</td></tr>
<tr><td><span title='2023-03-01 15:14:36 +0000'>2023-03-01</span></td><td><a href='/guix/commit/gnu/packages/fonts.scm?id=9a4dd01f1da2681fef8f89d43a43efa4ccbb5a16'>gnu: font-google-noto-emoji: Install correct license file.</a><span class='msg-avail'>...</span></td><td>Simon South</td></tr>
<tr><td><span title='2023-02-27 15:54:10 +0100'>2023-02-27</span></td><td><a href='/guix/commit/gnu/packages/fonts.scm?id=137390e66cf2e0f835200861376667f24518bdea'>gnu: Add font-microsoft-cascadia.</a><span class='msg-avail'>...</span></td><td>Jake Leporte</td></tr>
<tr><td><span title='2023-02-19 01:00:01 +0100'>2023-02-19</span></td><td><a href='/guix/commit/gnu/packages/fonts.scm?id=1e6ddceb8318d413745ca1c9d91fde01b1e0364b'>gnu: Use HTTPS package home pages wherever possible.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2023-02-07 09:13:38 +0100'>2023-02-07</span></td><td><a href='/guix/commit/gnu/packages/fonts.scm?id=8f09b385d9184f009d02690e4382d54ee827e346'>gnu: font-lxgw-wenkai-tc: Update to 0.932.</a><span class='msg-avail'>...</span></td><td>Hilton Chain</td></tr>
<tr><td><span title='2023-01-30 23:39:21 +0100'>2023-01-30</span></td><td><a href='/guix/commit/gnu/packages/fonts.scm?id=d1e0a0528a8dbe8fb01c6c9ac02663388d17cbc0'>gnu: Add font-carlito.</a><span class='msg-avail'>...</span></td><td>Trev</td></tr>
<tr><td><span title='2023-01-30 09:58:13 +0800'>2023-01-30</span></td><td><a href='/guix/commit/gnu/packages/fonts.scm?id=4c4922ba0f494e15225ebc410260d8accf359076'>gnu: font-sarasa-gothic: Update to 0.39.0.</a><span class='msg-avail'>...</span></td><td>Hilton Chain</td></tr>
<tr><td><span title='2023-01-30 09:57:02 +0800'>2023-01-30</span></td><td><a href='/guix/commit/gnu/packages/fonts.scm?id=0eca850e15987862e36579885d5c7c479b26d08f'>gnu: font-lxgw-wenkai-tc: Update to 0.931.</a><span class='msg-avail'>...</span></td><td>Hilton Chain</td></tr>
<tr><td><span title='2023-01-30 09:33:34 +0800'>2023-01-30</span></td><td><a href='/guix/commit/gnu/packages/fonts.scm?id=86b111962ce29d76622f082c304882c44f27db31'>gnu: font-lxgw-wenkai: Update to 1.250.</a><span class='msg-avail'>...</span></td><td>Hilton Chain</td></tr>
<tr><td><span title='2023-01-28 10:54:29 +0800'>2023-01-28</span></td><td><a href='/guix/commit/gnu/packages/fonts.scm?id=f26c474dec2d3a32e2c5c9f869300faebffbfb01'>gnu: Add font-google-noto-emoji.</a><span class='msg-avail'>...</span></td><td>Fredrik Salomonsson</td></tr>