annotate tools/form2table.lua @ 12763:d26eefe98d09

util.dbuffer: Add efficient shortcuts for discard() in certain cases If the buffer is already empty, nothing to do. If we're throwing away the whole buffer, we can just empty it and avoid read_chunk() (which in turn may collapse()). These shortcuts are much more efficient.
author Matthew Wild <mwild1@gmail.com>
date Tue, 11 Oct 2022 11:37:55 +0100
parents 9d1ce6f28401
children 879a6a33c21b
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9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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1 -- Read an XML dataform and spit out a serialized Lua table of it
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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2
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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3 local function from_stanza(stanza)
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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4 local layout = {
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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5 title = stanza:get_child_text("title");
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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6 instructions = stanza:get_child_text("instructions");
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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7 };
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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8 for tag in stanza:childtags("field") do
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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9 local field = {
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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10 name = tag.attr.var;
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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11 type = tag.attr.type;
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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12 label = tag.attr.label;
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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13 desc = tag:get_child_text("desc");
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
parents:
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14 required = tag:get_child("required") and true or nil;
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
parents:
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15 value = tag:get_child_text("value");
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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16 options = nil;
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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17 };
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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18
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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19 if field.type == "list-single" or field.type == "list-multi" then
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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20 local options = {};
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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21 for option in tag:childtags("option") do
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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22 options[#options+1] = { label = option.attr.label, value = option:get_child_text("value") };
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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23 end
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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24 field.options = options;
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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25 end
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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26
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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27 if field.type == "jid-multi" or field.type == "list-multi" or field.type == "text-multi" then
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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28 local values = {};
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
parents:
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29 for value in tag:childtags("value") do
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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30 values[#values+1] = value:get_text();
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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31 end
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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32 if field.type == "text-multi" then
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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33 values = table.concat(values, "\n");
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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34 end
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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35 field.value = values;
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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36 end
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
parents:
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37
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
parents:
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38 if field.type == "boolean" then
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
parents:
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39 field.value = field.value == "true" or field.value == "1";
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
parents:
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40 end
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
parents:
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41
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
parents:
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42 layout[#layout+1] = field;
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
parents:
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43
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
parents:
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44 end
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
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45 return layout;
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
parents:
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46 end
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
parents:
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47
9d1ce6f28401 tools/form2table: Convert XEP-0004 dataform from XML to util.dataforms Lua format
Kim Alvefur <zash@zash.se>
parents:
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48 print("dataforms.new " .. require "util.serialization".serialize(from_stanza(require "util.xml".parse(io.read("*a"))), { unquoted = true }))