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annotate util/envload.lua @ 7924:8487fe9fc335

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util.envload: Open file here instead of letting loadfile do it so that all return values from io.open can be collected
author Kim Alvefur <zash@zash.se>
date Wed, 01 Mar 2017 16:42:02 +0100
parents da54ad64f6da
children 5dec27760ecd
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rev   line source
5020
ef1eb65acbba util.envload: New module to abstract Lua 5.1's setfenv and Lua 5.2's load
Florian Zeitz <florob@babelmonkeys.de>
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1 -- Prosody IM
ef1eb65acbba util.envload: New module to abstract Lua 5.1's setfenv and Lua 5.2's load
Florian Zeitz <florob@babelmonkeys.de>
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2 -- Copyright (C) 2008-2011 Florian Zeitz
ef1eb65acbba util.envload: New module to abstract Lua 5.1's setfenv and Lua 5.2's load
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3 --
ef1eb65acbba util.envload: New module to abstract Lua 5.1's setfenv and Lua 5.2's load
Florian Zeitz <florob@babelmonkeys.de>
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4 -- This project is MIT/X11 licensed. Please see the
ef1eb65acbba util.envload: New module to abstract Lua 5.1's setfenv and Lua 5.2's load
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5 -- COPYING file in the source package for more information.
ef1eb65acbba util.envload: New module to abstract Lua 5.1's setfenv and Lua 5.2's load
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6 --
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da54ad64f6da util.envload: Ignore use of Lua 5.1-only setfenv function [luacheck]
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7 -- luacheck: ignore 113/setfenv
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8
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8487fe9fc335 util.envload: Open file here instead of letting loadfile do it so that all return values from io.open can be collected
Kim Alvefur <zash@zash.se>
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9 local load, loadstring, setfenv = load, loadstring, setfenv;
8487fe9fc335 util.envload: Open file here instead of letting loadfile do it so that all return values from io.open can be collected
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10 local io_open = io.open;
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11 local envload;
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12 local envloadfile;
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13
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14 if setfenv then
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15 function envload(code, source, env)
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16 local f, err = loadstring(code, source);
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17 if f and env then setfenv(f, env); end
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18 return f, err;
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19 end
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21 function envloadfile(file, env)
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22 local fh, err, errno = io_open(file);
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23 if not fh then return fh, err, errno; end
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24 local f, err = load(function () return fh:read(2048); end, "@"..file);
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25 if f and env then setfenv(f, env); end
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26 return f, err;
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27 end
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28 else
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29 function envload(code, source, env)
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30 return load(code, source, nil, env);
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31 end
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32
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33 function envloadfile(file, env)
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34 local fh, err, errno = io_open(file);
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35 if not fh then return fh, err, errno; end
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36 return load(fh:lines(2048), "@"..file, nil, env);
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37 end
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38 end
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Florian Zeitz <florob@babelmonkeys.de>
parents:
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39
ef1eb65acbba util.envload: New module to abstract Lua 5.1's setfenv and Lua 5.2's load
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40 return { envload = envload, envloadfile = envloadfile };