author | Matthew Wild <mwild1@gmail.com> |
Mon, 02 Feb 2009 18:04:13 +0000 | |
changeset 767 | 13ae298c67d7 |
parent 760 | 90ce865eebd8 |
child 896 | 2c0b9e3c11c3 |
permissions | -rw-r--r-- |
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-- Prosody IM v0.3 |
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-- Copyright (C) 2008-2009 Matthew Wild |
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-- Copyright (C) 2008-2009 Waqas Hussain |
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-- |
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-- This project is MIT/X11 licensed. Please see the |
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-- COPYING file in the source package for more information. |
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-- |
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local string_rep = string.rep; |
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local type = type; |
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local tostring = tostring; |
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local t_insert = table.insert; |
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local t_concat = table.concat; |
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local error = error; |
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local pairs = pairs; |
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module "serialization" |
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local indent = function(i) |
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return string_rep("\t", i); |
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end |
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local function basicSerialize (o) |
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if type(o) == "number" or type(o) == "boolean" then |
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return tostring(o); |
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else -- assume it is a string -- FIXME make sure it's a string. throw an error otherwise. |
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return (("%q"):format(tostring(o)):gsub("\\\n", "\\n")); |
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end |
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end |
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local function _simplesave(o, ind, t, func) |
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if type(o) == "number" then |
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func(t, tostring(o)); |
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elseif type(o) == "string" then |
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func(t, (("%q"):format(o):gsub("\\\n", "\\n"))); |
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elseif type(o) == "table" then |
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func(t, "{\n"); |
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for k,v in pairs(o) do |
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func(t, indent(ind)); |
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func(t, "["); |
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func(t, basicSerialize(k)); |
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func(t, "] = "); |
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if ind == 0 then |
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_simplesave(v, 0, t, func); |
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else |
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_simplesave(v, ind+1, t, func); |
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end |
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func(t, ",\n"); |
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end |
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func(t, indent(ind-1)); |
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func(t, "}"); |
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elseif type(o) == "boolean" then |
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func(t, (o and "true" or "false")); |
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else |
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error("cannot serialize a " .. type(o)) |
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end |
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end |
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function append(t, o) |
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_simplesave(o, 1, t, t.write or t_insert); |
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return t; |
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end |
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function serialize(o) |
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return t_concat(append({}, o)); |
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end |
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function deserialize(str) |
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error("Not implemented"); |
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end |
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return _M; |