prosody
bf8f2da84007
util/serialization.lua

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util/serialization.lua @ 11200:bf8f2da84007

Merge 0.11->trunk
author Kim Alvefur <zash@zash.se>
date Thu, 05 Nov 2020 22:31:25 +0100
parent 11093:ec14d4fce855
child 12781:22066b02887f
comparison
equal deleted inserted replaced
11199:6c7c50a4de32 11200:bf8f2da84007
14 local s_rep = string.rep; 14 local s_rep = string.rep;
15 local s_char = string.char; 15 local s_char = string.char;
16 local s_match = string.match; 16 local s_match = string.match;
17 local t_concat = table.concat; 17 local t_concat = table.concat;
18 18
19 local to_hex = require "util.hex".to;
20
19 local pcall = pcall; 21 local pcall = pcall;
20 local envload = require"util.envload".envload; 22 local envload = require"util.envload".envload;
21 23
22 local pos_inf, neg_inf = math.huge, -math.huge; 24 local pos_inf, neg_inf = math.huge, -math.huge;
23 -- luacheck: ignore 143/math
24 local m_type = math.type or function (n) 25 local m_type = math.type or function (n)
25 return n % 1 == 0 and n <= 9007199254740992 and n >= -9007199254740992 and "integer" or "float"; 26 return n % 1 == 0 and n <= 9007199254740992 and n >= -9007199254740992 and "integer" or "float";
26 end; 27 end;
27 28
28 local char_to_hex = {}; 29 local function rawpairs(t)
29 for i = 0,255 do 30 return next, t, nil;
30 char_to_hex[s_char(i)] = s_format("%02x", i);
31 end
32
33 local function to_hex(s)
34 return (s_gsub(s, ".", char_to_hex));
35 end 31 end
36 32
37 local function fatal_error(obj, why) 33 local function fatal_error(obj, why)
38 error("Can't serialize "..type(obj) .. (why and ": ".. why or "")); 34 error("Can't serialize "..type(obj) .. (why and ": ".. why or ""));
39 end 35 end
121 local unquoted = opt.unquoted == true and "^[%a_][%w_]*$" or opt.unquoted; 117 local unquoted = opt.unquoted == true and "^[%a_][%w_]*$" or opt.unquoted;
122 local hex = opt.hex; 118 local hex = opt.hex;
123 local freeze = opt.freeze; 119 local freeze = opt.freeze;
124 local maxdepth = opt.maxdepth or 127; 120 local maxdepth = opt.maxdepth or 127;
125 local multirefs = opt.multiref; 121 local multirefs = opt.multiref;
122 local table_pairs = opt.table_iterator or rawpairs;
126 123
127 -- serialize one table, recursively 124 -- serialize one table, recursively
128 -- t - table being serialized 125 -- t - table being serialized
129 -- o - array where tokens are added, concatenate to get final result 126 -- o - array where tokens are added, concatenate to get final result
130 -- - also used to detect cycles 127 -- - also used to detect cycles
151 local tag = mt.__name; 148 local tag = mt.__name;
152 local fr = mt.__freeze; 149 local fr = mt.__freeze;
153 150
154 if type(fr) == "function" then 151 if type(fr) == "function" then
155 t = fr(t); 152 t = fr(t);
153 if type(t) == "string" then
154 o[l], l = t, l + 1;
155 return l;
156 end
156 if type(tag) == "string" then 157 if type(tag) == "string" then
157 o[l], l = tag, l + 1; 158 o[l], l = tag, l + 1;
158 end 159 end
159 end 160 end
160 end 161 end
162 163
163 o[l], l = tstart, l + 1; 164 o[l], l = tstart, l + 1;
164 local indent = s_rep(indentwith, d); 165 local indent = s_rep(indentwith, d);
165 local numkey = 1; 166 local numkey = 1;
166 local ktyp, vtyp; 167 local ktyp, vtyp;
167 for k,v in next,t do 168 local had_items = false;
169 for k,v in table_pairs(t) do
170 had_items = true;
168 o[l], l = itemstart, l + 1; 171 o[l], l = itemstart, l + 1;
169 o[l], l = indent, l + 1; 172 o[l], l = indent, l + 1;
170 ktyp, vtyp = type(k), type(v); 173 ktyp, vtyp = type(k), type(v);
171 if k == numkey then 174 if k == numkey then
172 -- next index in array part 175 -- next index in array part
193 if vtyp == "table" then 196 if vtyp == "table" then
194 l = serialize_table(v, o, l, d+1); 197 l = serialize_table(v, o, l, d+1);
195 else 198 else
196 o[l], l = ser(v), l + 1; 199 o[l], l = ser(v), l + 1;
197 end 200 end
198 -- last item? 201 o[l], l = itemsep, l + 1;
199 if next(t, k) ~= nil then 202 end
200 o[l], l = itemsep, l + 1; 203 if had_items then
201 else 204 o[l - 1] = itemlast;
202 o[l], l = itemlast, l + 1;
203 end
204 end
205 if next(t) ~= nil then
206 o[l], l = s_rep(indentwith, d-1), l + 1; 205 o[l], l = s_rep(indentwith, d-1), l + 1;
207 end 206 end
208 o[l], l = tend, l +1; 207 o[l], l = tend, l +1;
209 208
210 if multirefs then 209 if multirefs then