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annotate tools/generate_format_spec.lua @ 14179:25beb66fab38 13.0

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util.crypto: Use post-Lua 5.1 buffer API Tha Lua 5.1 buffer API was frustrating to work with. luaL_prepbuffer() only allocates LUAL_BUFFERSIZE - there is no way to request a specific size. LUAL_BUFFERSIZE is set to BUFSIZ by default, which is generally 8192 bytes on Linux, however it may vary between platforms. The variation means this buffer could potentially overflow (small BUFSIZ with large signature). The Lua 5.2+ buffer API enables requesting a specific buffer size, so that's what we do now.
author Matthew Wild <mwild1@gmail.com>
date Mon, 25 May 2026 15:11:47 +0100
parents e0a8c5b1ab4f
children
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12034
ee94ac51b2dd util.format: ALL THE TESTS!!!
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1 local format = require"util.format".format;
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2 local dump = require"util.serialization".new("oneline")
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3 local types = {
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4 "nil";
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5 "boolean";
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6 "number";
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7 "string";
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8 "function";
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9 -- "userdata";
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10 "thread";
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11 "table";
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12 };
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13 local example_values = {
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14 ["nil"] = { n = 1; nil };
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15 ["boolean"] = { true; false };
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16 ["number"] = { 97; -12345; 1.5; 73786976294838206464; math.huge; 2147483647 };
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17 ["string"] = { "hello"; "foo \1\2\3 bar"; "nödåtgärd"; string.sub("nödåtgärd", 1, -4) };
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18 ["function"] = { function() end };
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19 -- ["userdata"] = {};
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20 ["thread"] = { coroutine.create(function() end) };
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e0a8c5b1ab4f util.format: Ensure metatable __tostring results are also sanitized
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21 ["table"] = { {}, setmetatable({},{__tostring=function ()return "foo \1\2\3 bar"end}) };
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22 };
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23 local example_strings = setmetatable({
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24 ["nil"] = { "nil" };
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25 ["function"] = { "function() end" };
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26 ["number"] = { "97"; "-12345"; "1.5"; "73786976294838206464"; "math.huge"; "2147483647" };
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27 ["thread"] = { "coroutine.create(function() end)" };
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28 ["table"] = { "{ }", "setmetatable({},{__tostring=function ()return \"foo \\1\\2\\3 bar\"end})" }
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29 }, { __index = function() return {} end });
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30 for _, lua_type in ipairs(types) do
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31 print(string.format("\t\tdescribe(\"%s\", function ()", lua_type));
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32 local examples = example_values[lua_type];
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33 for fmt in ("cdiouxXaAeEfgGqs"):gmatch(".") do
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34 print(string.format("\t\t\tdescribe(\"to %%%s\", function ()", fmt));
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35 print("\t\t\t\tit(\"works\", function ()");
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36 for i = 1, examples.n or #examples do
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37 local example = examples[i];
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38 if not tostring(example):match("%w+: 0[xX]%x+") then
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39 print(string.format("\t\t\t\t\tassert.equal(%q, format(%q, %s))", format("%" .. fmt, example), "%" .. fmt,
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40 example_strings[lua_type][i] or dump(example)));
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41 else
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42 print(string.format("\t\t\t\t\tassert.matches(\"[%s: 0[xX]%%x+]\", format(%q, %s))", lua_type, "%" .. fmt,
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43 example_strings[lua_type][i] or dump(example)));
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44 end
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45 end
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46 print("\t\t\t\tend);");
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47 print("\t\t\tend);");
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48 print()
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49 end
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50 print("\t\tend);");
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51 print()
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52 end