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Merge with trunk
894 | 1 | -- Prosody IM v0.4 |
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2 | -- Copyright (C) 2008-2009 Matthew Wild |
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3 | -- Copyright (C) 2008-2009 Waqas Hussain |
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4 | -- |
758 | 5 | -- This project is MIT/X11 licensed. Please see the |
6 | -- COPYING file in the source package for more information. | |
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7 | -- |
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8 | |
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9 | local string_rep = string.rep; |
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10 | local type = type; |
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11 | local tostring = tostring; |
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12 | local t_insert = table.insert; |
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13 | local t_concat = table.concat; |
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14 | local error = error; |
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15 | local pairs = pairs; |
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16 | |
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17 | local debug_traceback = debug.traceback; |
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18 | local log = require "util.logger".init("serialization"); |
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19 | module "serialization" |
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20 | |
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21 | local indent = function(i) |
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22 | return string_rep("\t", i); |
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23 | end |
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24 | local function basicSerialize (o) |
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25 | if type(o) == "number" or type(o) == "boolean" then |
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26 | return tostring(o); |
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27 | else -- assume it is a string -- FIXME make sure it's a string. throw an error otherwise. |
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28 | return (("%q"):format(tostring(o)):gsub("\\\n", "\\n")); |
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29 | end |
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30 | end |
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31 | local function _simplesave(o, ind, t, func) |
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32 | if type(o) == "number" then |
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33 | func(t, tostring(o)); |
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34 | elseif type(o) == "string" then |
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35 | func(t, (("%q"):format(o):gsub("\\\n", "\\n"))); |
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36 | elseif type(o) == "table" then |
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37 | func(t, "{\n"); |
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38 | for k,v in pairs(o) do |
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39 | func(t, indent(ind)); |
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40 | func(t, "["); |
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41 | func(t, basicSerialize(k)); |
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42 | func(t, "] = "); |
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43 | if ind == 0 then |
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44 | _simplesave(v, 0, t, func); |
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45 | else |
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46 | _simplesave(v, ind+1, t, func); |
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47 | end |
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48 | func(t, ",\n"); |
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49 | end |
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50 | func(t, indent(ind-1)); |
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51 | func(t, "}"); |
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52 | elseif type(o) == "boolean" then |
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53 | func(t, (o and "true" or "false")); |
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54 | else |
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55 | log("error", "cannot serialize a %s: %s", type(o), debug_traceback()) |
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56 | func(t, "nil"); |
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57 | end |
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58 | end |
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59 | |
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60 | function append(t, o) |
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61 | _simplesave(o, 1, t, t.write or t_insert); |
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62 | return t; |
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63 | end |
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64 | |
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65 | function serialize(o) |
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66 | return t_concat(append({}, o)); |
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67 | end |
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68 | |
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69 | function deserialize(str) |
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70 | error("Not implemented"); |
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71 | end |
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72 | |
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73 | return _M; |