prosody
3fd24e1945b0
util/mercurial.lua

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util/mercurial.lua @ 13135:3fd24e1945b0

mod_storage_internal: Lazy-load archive items while iterating Very large list files previously ran into limits of the Lua parser, or just caused Prosody to freeze while parsing. Using the new index we can parse individual items one at a time. This probably won't reduce overall CPU usage, probably the opposite, but it will reduce the number of items in memory at once and allow collection of items after we iterated past them.
author Kim Alvefur <zash@zash.se>
date Wed, 12 May 2021 01:25:44 +0200
parent 10533:a6cc5b844d7b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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ec94dc502113 util.mercurial: Utility functions for Mercurial repositories
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1
ec94dc502113 util.mercurial: Utility functions for Mercurial repositories
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2 local lfs = require"lfs";
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3
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4 local hg = { };
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5
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6 function hg.check_id(path)
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7 if lfs.attributes(path, 'mode') ~= "directory" then
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8 return nil, "not a directory";
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9 end
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10 local hg_dirstate = io.open(path.."/.hg/dirstate");
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11 local hgid, hgrepo
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12 if hg_dirstate then
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13 hgid = ("%02x%02x%02x%02x%02x%02x"):format(hg_dirstate:read(6):byte(1, 6));
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14 hg_dirstate:close();
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15 local hg_changelog = io.open(path.."/.hg/store/00changelog.i");
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16 if hg_changelog then
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17 hg_changelog:seek("set", 0x20);
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18 hgrepo = ("%02x%02x%02x%02x%02x%02x"):format(hg_changelog:read(6):byte(1, 6));
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19 hg_changelog:close();
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20 end
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21 else
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a6cc5b844d7b util.mercurial: Ignore an unused error variable [luacheck]
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22 local hg_archival,e = io.open(path.."/.hg_archival.txt"); -- luacheck: ignore 211/e
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23 if hg_archival then
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24 local repo = hg_archival:read("*l");
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25 local node = hg_archival:read("*l");
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26 hg_archival:close()
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27 hgid = node and node:match("^node: (%x%x%x%x%x%x%x%x%x%x%x%x)")
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28 hgrepo = repo and repo:match("^repo: (%x%x%x%x%x%x%x%x%x%x%x%x)")
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29 end
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30 end
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31 return hgid, hgrepo;
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32 end
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33
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34 return hg;