prosody
638f627e707f
util/adhoc.lua

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util/adhoc.lua @ 13134:638f627e707f

util.datamanager: Add O(1) list indexing with on-disk index Index file contains offsets and lengths of each item() which allows seeking directly to each item and reading it without parsing the entire file. Also allows tricks like binary search, assuming items have some defined order. We take advantage of the 1-based indexing in tables to store a magic header in the 0 position, so that table index 1 ends up at file index 1.
author Kim Alvefur <zash@zash.se>
date Tue, 11 May 2021 02:09:56 +0200
parent 11352:e10567199f02
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1 -- luacheck: ignore 212/self
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2
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3 local function new_simple_form(form, result_handler)
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4 return function(self, data, state)
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5 if state or data.form then
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6 if data.action == "cancel" then
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7 return { status = "canceled" };
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8 end
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9 local fields, err = form:data(data.form);
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10 return result_handler(fields, err, data);
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11 else
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12 return { status = "executing", actions = {"next", "complete", default = "complete"}, form = form }, "executing";
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13 end
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14 end
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15 end
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16
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17 local function new_initial_data_form(form, initial_data, result_handler)
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18 return function(self, data, state)
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19 if state or data.form then
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20 if data.action == "cancel" then
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21 return { status = "canceled" };
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22 end
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23 local fields, err = form:data(data.form);
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24 return result_handler(fields, err, data);
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25 else
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26 local values, err = initial_data(data);
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27 if type(err) == "table" then
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28 return {status = "error"; error = err}
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29 elseif type(err) == "string" then
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30 return {status = "error"; error = {type = "cancel"; condition = "internal-server-error", err}}
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31 end
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32 return { status = "executing", actions = {"next", "complete", default = "complete"},
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33 form = { layout = form, values = values } }, "executing";
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34 end
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35 end
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36 end
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37
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38 return { new_simple_form = new_simple_form,
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39 new_initial_data_form = new_initial_data_form };