prosody
c434bff22b14
util/serialization.lua

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util/serialization.lua @ 10303:c434bff22b14

mod_csi_simple: Always remove session filters when disabling CSI Only guard the actual pausing of outgoing data on the method existing. This prevents the filters from lingering in case something happened to the connection. Removing already removed filters should be a safe noop.
author Kim Alvefur <zash@zash.se>
date Sat, 05 Oct 2019 16:55:58 +0200
parent 10061:5c71693c8345
child 11093:ec14d4fce855
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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Matthew Wild <mwild1@gmail.com>
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 -- Copyright (C) 2018 Kim Alvefur
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5 --
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b1885732e979 GPL->MIT!
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6 -- This project is MIT/X11 licensed. Please see the
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7 -- COPYING file in the source package for more information.
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8 --
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9
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10 local getmetatable = getmetatable;
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11 local next, type = next, type;
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12 local s_format = string.format;
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13 local s_gsub = string.gsub;
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14 local s_rep = string.rep;
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15 local s_char = string.char;
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16 local s_match = string.match;
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17 local t_concat = table.concat;
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18
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19 local to_hex = require "util.hex".to;
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20
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21 local pcall = pcall;
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22 local envload = require"util.envload".envload;
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23
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24 local pos_inf, neg_inf = math.huge, -math.huge;
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25 local m_type = math.type or function (n)
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26 return n % 1 == 0 and n <= 9007199254740992 and n >= -9007199254740992 and "integer" or "float";
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27 end;
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28
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29 local function rawpairs(t)
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30 return next, t, nil;
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31 end
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32
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33 local function fatal_error(obj, why)
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34 error("Can't serialize "..type(obj) .. (why and ": ".. why or ""));
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35 end
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36
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37 local function nonfatal_fallback(x, why)
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38 return s_format("{__type=%q,__error=%q}", type(x), why or "fail");
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39 end
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40
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41 local string_escapes = {
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42 ['\a'] = [[\a]]; ['\b'] = [[\b]];
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43 ['\f'] = [[\f]]; ['\n'] = [[\n]];
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44 ['\r'] = [[\r]]; ['\t'] = [[\t]];
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45 ['\v'] = [[\v]]; ['\\'] = [[\\]];
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46 ['\"'] = [[\"]]; ['\''] = [[\']];
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47 }
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48
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49 for i = 0, 255 do
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50 local c = s_char(i);
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51 if not string_escapes[c] then
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52 string_escapes[c] = s_format("\\%03d", i);
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53 end
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54 end
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55
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56 local default_keywords = {
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57 ["do"] = true; ["and"] = true; ["else"] = true; ["break"] = true;
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58 ["if"] = true; ["end"] = true; ["goto"] = true; ["false"] = true;
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59 ["in"] = true; ["for"] = true; ["then"] = true; ["local"] = true;
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60 ["or"] = true; ["nil"] = true; ["true"] = true; ["until"] = true;
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61 ["elseif"] = true; ["function"] = true; ["not"] = true;
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62 ["repeat"] = true; ["return"] = true; ["while"] = true;
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63 };
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64
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65 local function new(opt)
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66 if type(opt) ~= "table" then
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67 opt = { preset = opt };
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68 end
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69
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70 local types = {
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71 table = true;
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72 string = true;
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73 number = true;
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74 boolean = true;
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75 ["nil"] = true;
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76 };
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77
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78 -- presets
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79 if opt.preset == "debug" then
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80 opt.preset = "oneline";
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81 opt.freeze = true;
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82 opt.fatal = false;
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83 opt.fallback = nonfatal_fallback;
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84 opt.unquoted = true;
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85 end
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86 if opt.preset == "oneline" then
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87 opt.indentwith = opt.indentwith or "";
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88 opt.itemstart = opt.itemstart or " ";
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89 opt.itemlast = opt.itemlast or "";
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90 opt.tend = opt.tend or " }";
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91 elseif opt.preset == "compact" then
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92 opt.indentwith = opt.indentwith or "";
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93 opt.itemstart = opt.itemstart or "";
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94 opt.itemlast = opt.itemlast or "";
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95 opt.equals = opt.equals or "=";
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96 opt.unquoted = true;
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97 end
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98
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99 local fallback = opt.fallback or opt.fatal == false and nonfatal_fallback or fatal_error;
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100
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101 local function ser(v)
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102 return (types[type(v)] or fallback)(v);
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103 end
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104
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105 local keywords = opt.keywords or default_keywords;
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106
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107 -- indented
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108 local indentwith = opt.indentwith or "\t";
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109 local itemstart = opt.itemstart or "\n";
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110 local itemsep = opt.itemsep or ";";
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111 local itemlast = opt.itemlast or ";\n";
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112 local tstart = opt.tstart or "{";
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113 local tend = opt.tend or "}";
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114 local kstart = opt.kstart or "[";
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115 local kend = opt.kend or "]";
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116 local equals = opt.equals or " = ";
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117 local unquoted = opt.unquoted == true and "^[%a_][%w_]*$" or opt.unquoted;
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118 local hex = opt.hex;
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119 local freeze = opt.freeze;
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120 local maxdepth = opt.maxdepth or 127;
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121 local multirefs = opt.multiref;
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122 local table_pairs = opt.table_iterator or rawpairs;
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123
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124 -- serialize one table, recursively
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125 -- t - table being serialized
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126 -- o - array where tokens are added, concatenate to get final result
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127 -- - also used to detect cycles
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128 -- l - position in o of where to insert next token
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129 -- d - depth, used for indentation
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130 local function serialize_table(t, o, l, d)
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131 if o[t] then
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132 o[l], l = fallback(t, "table has multiple references"), l + 1;
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133 return l;
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134 elseif d > maxdepth then
9a1e2f5f674f util.serialization: Separate errors for multiple table references and max depth
Kim Alvefur <zash@zash.se>
parents: 9564
diff changeset
135 o[l], l = fallback(t, "max table depth reached"), l + 1;
9008
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
136 return l;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
137 end
546
1e65f64dfabf Added module util.serialization
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
138
9567
dbfa286cfa88 util.serialization: Add option for allowing multiple references to the same table (but not cycles)
Kim Alvefur <zash@zash.se>
parents: 9565
diff changeset
139 -- Keep track of table loops
dbfa286cfa88 util.serialization: Add option for allowing multiple references to the same table (but not cycles)
Kim Alvefur <zash@zash.se>
parents: 9565
diff changeset
140 local ot = t; -- reference pre-freeze
9008
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
141 o[t] = true;
9567
dbfa286cfa88 util.serialization: Add option for allowing multiple references to the same table (but not cycles)
Kim Alvefur <zash@zash.se>
parents: 9565
diff changeset
142 o[ot] = true;
9485
c667887d78ad util.serialization: Simpler metatable pre-processing
Kim Alvefur <zash@zash.se>
parents: 9484
diff changeset
143
c667887d78ad util.serialization: Simpler metatable pre-processing
Kim Alvefur <zash@zash.se>
parents: 9484
diff changeset
144 if freeze == true then
9008
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Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
145 -- opportunity to do pre-serialization
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
146 local mt = getmetatable(t);
9485
c667887d78ad util.serialization: Simpler metatable pre-processing
Kim Alvefur <zash@zash.se>
parents: 9484
diff changeset
147 if type(mt) == "table" then
c667887d78ad util.serialization: Simpler metatable pre-processing
Kim Alvefur <zash@zash.se>
parents: 9484
diff changeset
148 local tag = mt.__name;
c667887d78ad util.serialization: Simpler metatable pre-processing
Kim Alvefur <zash@zash.se>
parents: 9484
diff changeset
149 local fr = mt.__freeze;
c667887d78ad util.serialization: Simpler metatable pre-processing
Kim Alvefur <zash@zash.se>
parents: 9484
diff changeset
150
c667887d78ad util.serialization: Simpler metatable pre-processing
Kim Alvefur <zash@zash.se>
parents: 9484
diff changeset
151 if type(fr) == "function" then
c667887d78ad util.serialization: Simpler metatable pre-processing
Kim Alvefur <zash@zash.se>
parents: 9484
diff changeset
152 t = fr(t);
c667887d78ad util.serialization: Simpler metatable pre-processing
Kim Alvefur <zash@zash.se>
parents: 9484
diff changeset
153 if type(tag) == "string" then
c667887d78ad util.serialization: Simpler metatable pre-processing
Kim Alvefur <zash@zash.se>
parents: 9484
diff changeset
154 o[l], l = tag, l + 1;
c667887d78ad util.serialization: Simpler metatable pre-processing
Kim Alvefur <zash@zash.se>
parents: 9484
diff changeset
155 end
9008
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
156 end
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
157 end
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
158 end
9485
c667887d78ad util.serialization: Simpler metatable pre-processing
Kim Alvefur <zash@zash.se>
parents: 9484
diff changeset
159
9008
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
160 o[l], l = tstart, l + 1;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
161 local indent = s_rep(indentwith, d);
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
162 local numkey = 1;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
163 local ktyp, vtyp;
9863
aebfd1601ae2 util.serialization: Optimize handling of last table separator
Kim Alvefur <zash@zash.se>
parents: 9692
diff changeset
164 local had_items = false;
9864
9d80e679c371 util.serialization: Allow overriding table iterator
Kim Alvefur <zash@zash.se>
parents: 9863
diff changeset
165 for k,v in table_pairs(t) do
9863
aebfd1601ae2 util.serialization: Optimize handling of last table separator
Kim Alvefur <zash@zash.se>
parents: 9692
diff changeset
166 had_items = true;
9008
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
167 o[l], l = itemstart, l + 1;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
168 o[l], l = indent, l + 1;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
169 ktyp, vtyp = type(k), type(v);
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
170 if k == numkey then
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
171 -- next index in array part
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
172 -- assuming that these are found in order
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
173 numkey = numkey + 1;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
174 elseif unquoted and ktyp == "string" and
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
175 not keywords[k] and s_match(k, unquoted) then
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
176 -- unquoted keys
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
177 o[l], l = k, l + 1;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
178 o[l], l = equals, l + 1;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
179 else
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
180 -- quoted keys
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
181 o[l], l = kstart, l + 1;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
182 if ktyp == "table" then
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
183 l = serialize_table(k, o, l, d+1);
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
184 else
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
185 o[l], l = ser(k), l + 1;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
186 end
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
187 -- =
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
188 o[l], o[l+1], l = kend, equals, l + 2;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
189 end
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
190
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
191 -- the value
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
192 if vtyp == "table" then
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
193 l = serialize_table(v, o, l, d+1);
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
194 else
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
195 o[l], l = ser(v), l + 1;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
196 end
9863
aebfd1601ae2 util.serialization: Optimize handling of last table separator
Kim Alvefur <zash@zash.se>
parents: 9692
diff changeset
197 o[l], l = itemsep, l + 1;
9008
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
198 end
9863
aebfd1601ae2 util.serialization: Optimize handling of last table separator
Kim Alvefur <zash@zash.se>
parents: 9692
diff changeset
199 if had_items then
aebfd1601ae2 util.serialization: Optimize handling of last table separator
Kim Alvefur <zash@zash.se>
parents: 9692
diff changeset
200 o[l - 1] = itemlast;
9008
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
201 o[l], l = s_rep(indentwith, d-1), l + 1;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
202 end
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
203 o[l], l = tend, l +1;
9567
dbfa286cfa88 util.serialization: Add option for allowing multiple references to the same table (but not cycles)
Kim Alvefur <zash@zash.se>
parents: 9565
diff changeset
204
dbfa286cfa88 util.serialization: Add option for allowing multiple references to the same table (but not cycles)
Kim Alvefur <zash@zash.se>
parents: 9565
diff changeset
205 if multirefs then
dbfa286cfa88 util.serialization: Add option for allowing multiple references to the same table (but not cycles)
Kim Alvefur <zash@zash.se>
parents: 9565
diff changeset
206 o[t] = nil;
dbfa286cfa88 util.serialization: Add option for allowing multiple references to the same table (but not cycles)
Kim Alvefur <zash@zash.se>
parents: 9565
diff changeset
207 o[ot] = nil;
dbfa286cfa88 util.serialization: Add option for allowing multiple references to the same table (but not cycles)
Kim Alvefur <zash@zash.se>
parents: 9565
diff changeset
208 end
dbfa286cfa88 util.serialization: Add option for allowing multiple references to the same table (but not cycles)
Kim Alvefur <zash@zash.se>
parents: 9565
diff changeset
209
9008
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
210 return l;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
211 end
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
212
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
213 function types.table(t)
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
214 local o = {};
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
215 serialize_table(t, o, 1, 1);
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
216 return t_concat(o);
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
217 end
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
218
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
219 local function serialize_string(s)
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
220 return '"' .. s_gsub(s, "[%z\1-\31\"\'\\\127-\255]", string_escapes) .. '"';
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
221 end
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
222
9483
903e0cfd4cc9 util.serialization: Make check of prefix for optional hex encoding stricter
Kim Alvefur <zash@zash.se>
parents: 9480
diff changeset
223 if type(hex) == "string" then
9008
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
224 function types.string(s)
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
225 local esc = serialize_string(s);
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
226 if #esc > (#s*2+2+#hex) then
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
227 return hex .. '"' .. to_hex(s) .. '"';
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
228 end
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
229 return esc;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
230 end
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
231 else
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
232 types.string = serialize_string;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
233 end
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
234
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
235 function types.number(t)
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
236 if m_type(t) == "integer" then
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
237 return s_format("%d", t);
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
238 elseif t == pos_inf then
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
239 return "(1/0)";
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
240 elseif t == neg_inf then
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
241 return "(-1/0)";
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
242 elseif t ~= t then
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
243 return "(0/0)";
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
244 end
9486
20aad0108999 util.serialization: Remove encoding of very large or very small numbers in scientific notation
Kim Alvefur <zash@zash.se>
parents: 9485
diff changeset
245 return s_format("%.18g", t);
9008
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
246 end
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
247
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
248 -- Are these faster than tostring?
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
249 types["nil"] = function()
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
250 return "nil";
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
251 end
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
252
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
253 function types.boolean(t)
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
254 return t and "true" or "false";
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
255 end
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
256
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
257 return ser;
546
1e65f64dfabf Added module util.serialization
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
258 end
1e65f64dfabf Added module util.serialization
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
259
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6670
diff changeset
260 local function deserialize(str)
3736
73399dd525e8 util.serialization: Implemented deserialize().
Waqas Hussain <waqas20@gmail.com>
parents: 2923
diff changeset
261 if type(str) ~= "string" then return nil; end
73399dd525e8 util.serialization: Implemented deserialize().
Waqas Hussain <waqas20@gmail.com>
parents: 2923
diff changeset
262 str = "return "..str;
9484
1d1541630c20 util.serialization: Use '=' prefix for chunk source description
Kim Alvefur <zash@zash.se>
parents: 9483
diff changeset
263 local f, err = envload(str, "=serialized data", {});
3736
73399dd525e8 util.serialization: Implemented deserialize().
Waqas Hussain <waqas20@gmail.com>
parents: 2923
diff changeset
264 if not f then return nil, err; end
73399dd525e8 util.serialization: Implemented deserialize().
Waqas Hussain <waqas20@gmail.com>
parents: 2923
diff changeset
265 local success, ret = pcall(f);
73399dd525e8 util.serialization: Implemented deserialize().
Waqas Hussain <waqas20@gmail.com>
parents: 2923
diff changeset
266 if not success then return nil, ret; end
73399dd525e8 util.serialization: Implemented deserialize().
Waqas Hussain <waqas20@gmail.com>
parents: 2923
diff changeset
267 return ret;
546
1e65f64dfabf Added module util.serialization
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
268 end
1e65f64dfabf Added module util.serialization
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
269
10060
7a36b7ac309b util.serialization: Cache default serialization instance (fixes #1389)
Kim Alvefur <zash@zash.se>
parents: 9570
diff changeset
270 local default = new();
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
Kim Alvefur <zash@zash.se>
parents: 6670
diff changeset
271 return {
9008
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
272 new = new;
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
Kim Alvefur <zash@zash.se>
parents: 8555
diff changeset
273 serialize = function (x, opt)
10060
7a36b7ac309b util.serialization: Cache default serialization instance (fixes #1389)
Kim Alvefur <zash@zash.se>
parents: 9570
diff changeset
274 if opt == nil then
7a36b7ac309b util.serialization: Cache default serialization instance (fixes #1389)
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275 return default(x);
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parents: 9570
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276 else
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277 return new(opt)(x);
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parents: 9570
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278 end
9008
ae3c52419ec1 util.serialization: Rewritte for performance and flexibility
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parents: 8555
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279 end;
6777
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
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parents: 6670
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280 deserialize = deserialize;
5de6b93d0190 util.*: Remove use of module() function, make all module functions local and return them in a table at the end
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parents: 6670
diff changeset
281 };