prosody
dbd60f473164
util/json.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

util/json.lua @ 10603:dbd60f473164 0.11 0.11.5

util.startup: Ensure prosody.opts exists even when no options provided
author Matthew Wild <mwild1@gmail.com>
date Sun, 19 Jan 2020 15:50:32 +0000
parent 9329:19bc3ec13f07
child 12792:997f3ca90628
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
5436
a4ba5819bf50 util.json: Convert \uXXXX to UTF-8 when decoding
Matthew Wild <mwild1@gmail.com>
parents: 5395
diff changeset
1 -- Prosody IM
a4ba5819bf50 util.json: Convert \uXXXX to UTF-8 when decoding
Matthew Wild <mwild1@gmail.com>
parents: 5395
diff changeset
2 -- Copyright (C) 2008-2010 Matthew Wild
a4ba5819bf50 util.json: Convert \uXXXX to UTF-8 when decoding
Matthew Wild <mwild1@gmail.com>
parents: 5395
diff changeset
3 -- Copyright (C) 2008-2010 Waqas Hussain
a4ba5819bf50 util.json: Convert \uXXXX to UTF-8 when decoding
Matthew Wild <mwild1@gmail.com>
parents: 5395
diff changeset
4 --
a4ba5819bf50 util.json: Convert \uXXXX to UTF-8 when decoding
Matthew Wild <mwild1@gmail.com>
parents: 5395
diff changeset
5 -- This project is MIT/X11 licensed. Please see the
a4ba5819bf50 util.json: Convert \uXXXX to UTF-8 when decoding
Matthew Wild <mwild1@gmail.com>
parents: 5395
diff changeset
6 -- COPYING file in the source package for more information.
a4ba5819bf50 util.json: Convert \uXXXX to UTF-8 when decoding
Matthew Wild <mwild1@gmail.com>
parents: 5395
diff changeset
7 --
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
8
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
9 local type = type;
9329
19bc3ec13f07 util.json: Use util.iterators.sorted_pairs() in ordered mode
Matthew Wild <mwild1@gmail.com>
parents: 8697
diff changeset
10 local t_insert, t_concat, t_remove = table.insert, table.concat, table.remove;
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
11 local s_char = string.char;
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
12 local tostring, tonumber = tostring, tonumber;
9329
19bc3ec13f07 util.json: Use util.iterators.sorted_pairs() in ordered mode
Matthew Wild <mwild1@gmail.com>
parents: 8697
diff changeset
13 local pairs, ipairs, spairs = pairs, ipairs, require "util.iterators".sorted_pairs;
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
14 local next = next;
6785
bf1f09a5bcf7 util.json: Remove use of newproxy
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
15 local getmetatable, setmetatable = getmetatable, setmetatable;
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
16 local print = print;
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
17
5516
9733836629f9 util.json: Make encode(decode("[]"))=="[]".
Waqas Hussain <waqas20@gmail.com>
parents: 5436
diff changeset
18 local has_array, array = pcall(require, "util.array");
5562
a6b8fb827e2a util.json: Fix variable name typo which broke util.json when util.array was missing.
Waqas Hussain <waqas20@gmail.com>
parents: 5561
diff changeset
19 local array_mt = has_array and getmetatable(array()) or {};
5516
9733836629f9 util.json: Make encode(decode("[]"))=="[]".
Waqas Hussain <waqas20@gmail.com>
parents: 5436
diff changeset
20
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
21 --module("json")
7261
925f848c706d util.json: Variable renaming to avoid shadowing [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 7259
diff changeset
22 local module = {};
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
23
6785
bf1f09a5bcf7 util.json: Remove use of newproxy
Kim Alvefur <zash@zash.se>
parents: 5776
diff changeset
24 local null = setmetatable({}, { __tostring = function() return "null"; end; });
7261
925f848c706d util.json: Variable renaming to avoid shadowing [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 7259
diff changeset
25 module.null = null;
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
26
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
27 local escapes = {
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
28 ["\""] = "\\\"", ["\\"] = "\\\\", ["\b"] = "\\b",
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
29 ["\f"] = "\\f", ["\n"] = "\\n", ["\r"] = "\\r", ["\t"] = "\\t"};
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
30 for i=0,31 do
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
31 local ch = s_char(i);
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
32 if not escapes[ch] then escapes[ch] = ("\\u%.4X"):format(i); end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
33 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
34
5517
9d7349bbe4d2 util.json: New, improved, fixed codepoint to UTF-8 conversion.
Waqas Hussain <waqas20@gmail.com>
parents: 5516
diff changeset
35 local function codepoint_to_utf8(code)
9d7349bbe4d2 util.json: New, improved, fixed codepoint to UTF-8 conversion.
Waqas Hussain <waqas20@gmail.com>
parents: 5516
diff changeset
36 if code < 0x80 then return s_char(code); end
9d7349bbe4d2 util.json: New, improved, fixed codepoint to UTF-8 conversion.
Waqas Hussain <waqas20@gmail.com>
parents: 5516
diff changeset
37 local bits0_6 = code % 64;
9d7349bbe4d2 util.json: New, improved, fixed codepoint to UTF-8 conversion.
Waqas Hussain <waqas20@gmail.com>
parents: 5516
diff changeset
38 if code < 0x800 then
9d7349bbe4d2 util.json: New, improved, fixed codepoint to UTF-8 conversion.
Waqas Hussain <waqas20@gmail.com>
parents: 5516
diff changeset
39 local bits6_5 = (code - bits0_6) / 64;
9d7349bbe4d2 util.json: New, improved, fixed codepoint to UTF-8 conversion.
Waqas Hussain <waqas20@gmail.com>
parents: 5516
diff changeset
40 return s_char(0x80 + 0x40 + bits6_5, 0x80 + bits0_6);
5436
a4ba5819bf50 util.json: Convert \uXXXX to UTF-8 when decoding
Matthew Wild <mwild1@gmail.com>
parents: 5395
diff changeset
41 end
5517
9d7349bbe4d2 util.json: New, improved, fixed codepoint to UTF-8 conversion.
Waqas Hussain <waqas20@gmail.com>
parents: 5516
diff changeset
42 local bits0_12 = code % 4096;
9d7349bbe4d2 util.json: New, improved, fixed codepoint to UTF-8 conversion.
Waqas Hussain <waqas20@gmail.com>
parents: 5516
diff changeset
43 local bits6_6 = (bits0_12 - bits0_6) / 64;
9d7349bbe4d2 util.json: New, improved, fixed codepoint to UTF-8 conversion.
Waqas Hussain <waqas20@gmail.com>
parents: 5516
diff changeset
44 local bits12_4 = (code - bits0_12) / 4096;
9d7349bbe4d2 util.json: New, improved, fixed codepoint to UTF-8 conversion.
Waqas Hussain <waqas20@gmail.com>
parents: 5516
diff changeset
45 return s_char(0x80 + 0x40 + 0x20 + bits12_4, 0x80 + bits6_6, 0x80 + bits0_6);
5436
a4ba5819bf50 util.json: Convert \uXXXX to UTF-8 when decoding
Matthew Wild <mwild1@gmail.com>
parents: 5395
diff changeset
46 end
a4ba5819bf50 util.json: Convert \uXXXX to UTF-8 when decoding
Matthew Wild <mwild1@gmail.com>
parents: 5395
diff changeset
47
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
48 local valid_types = {
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
49 number = true,
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
50 string = true,
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
51 table = true,
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
52 boolean = true
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
53 };
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
54 local special_keys = {
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
55 __array = true;
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
56 __hash = true;
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
57 };
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
58
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
59 local simplesave, tablesave, arraysave, stringsave;
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
60
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
61 function stringsave(o, buffer)
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
62 -- FIXME do proper utf-8 and binary data detection
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
63 t_insert(buffer, "\""..(o:gsub(".", escapes)).."\"");
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
64 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
65
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
66 function arraysave(o, buffer)
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
67 t_insert(buffer, "[");
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
68 if next(o) then
7261
925f848c706d util.json: Variable renaming to avoid shadowing [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 7259
diff changeset
69 for _, v in ipairs(o) do
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
70 simplesave(v, buffer);
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
71 t_insert(buffer, ",");
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
72 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
73 t_remove(buffer);
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
74 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
75 t_insert(buffer, "]");
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
76 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
77
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
78 function tablesave(o, buffer)
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
79 local __array = {};
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
80 local __hash = {};
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
81 local hash = {};
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
82 for i,v in ipairs(o) do
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
83 __array[i] = v;
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
84 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
85 for k,v in pairs(o) do
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
86 local ktype, vtype = type(k), type(v);
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
87 if valid_types[vtype] or v == null then
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
88 if ktype == "string" and not special_keys[k] then
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
89 hash[k] = v;
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
90 elseif (valid_types[ktype] or k == null) and __array[k] == nil then
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
91 __hash[k] = v;
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
92 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
93 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
94 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
95 if next(__hash) ~= nil or next(hash) ~= nil or next(__array) == nil then
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
96 t_insert(buffer, "{");
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
97 local mark = #buffer;
9329
19bc3ec13f07 util.json: Use util.iterators.sorted_pairs() in ordered mode
Matthew Wild <mwild1@gmail.com>
parents: 8697
diff changeset
98 local _pairs = buffer.ordered and spairs or pairs;
19bc3ec13f07 util.json: Use util.iterators.sorted_pairs() in ordered mode
Matthew Wild <mwild1@gmail.com>
parents: 8697
diff changeset
99 for k,v in _pairs(hash) do
19bc3ec13f07 util.json: Use util.iterators.sorted_pairs() in ordered mode
Matthew Wild <mwild1@gmail.com>
parents: 8697
diff changeset
100 stringsave(k, buffer);
19bc3ec13f07 util.json: Use util.iterators.sorted_pairs() in ordered mode
Matthew Wild <mwild1@gmail.com>
parents: 8697
diff changeset
101 t_insert(buffer, ":");
19bc3ec13f07 util.json: Use util.iterators.sorted_pairs() in ordered mode
Matthew Wild <mwild1@gmail.com>
parents: 8697
diff changeset
102 simplesave(v, buffer);
19bc3ec13f07 util.json: Use util.iterators.sorted_pairs() in ordered mode
Matthew Wild <mwild1@gmail.com>
parents: 8697
diff changeset
103 t_insert(buffer, ",");
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
104 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
105 if next(__hash) ~= nil then
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
106 t_insert(buffer, "\"__hash\":[");
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
107 for k,v in pairs(__hash) do
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
108 simplesave(k, buffer);
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
109 t_insert(buffer, ",");
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
110 simplesave(v, buffer);
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
111 t_insert(buffer, ",");
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
112 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
113 t_remove(buffer);
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
114 t_insert(buffer, "]");
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
115 t_insert(buffer, ",");
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
116 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
117 if next(__array) then
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
118 t_insert(buffer, "\"__array\":");
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
119 arraysave(__array, buffer);
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
120 t_insert(buffer, ",");
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
121 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
122 if mark ~= #buffer then t_remove(buffer); end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
123 t_insert(buffer, "}");
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
124 else
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
125 arraysave(__array, buffer);
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
126 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
127 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
128
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
129 function simplesave(o, buffer)
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
130 local t = type(o);
7235
ee1f7e1e548c util.json: Fix encoding of json.null (bug introduced in bf1f09a5bcf7)
Matthew Wild <mwild1@gmail.com>
parents: 6785
diff changeset
131 if o == null then
ee1f7e1e548c util.json: Fix encoding of json.null (bug introduced in bf1f09a5bcf7)
Matthew Wild <mwild1@gmail.com>
parents: 6785
diff changeset
132 t_insert(buffer, "null");
ee1f7e1e548c util.json: Fix encoding of json.null (bug introduced in bf1f09a5bcf7)
Matthew Wild <mwild1@gmail.com>
parents: 6785
diff changeset
133 elseif t == "number" then
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
134 t_insert(buffer, tostring(o));
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
135 elseif t == "string" then
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
136 stringsave(o, buffer);
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
137 elseif t == "table" then
5516
9733836629f9 util.json: Make encode(decode("[]"))=="[]".
Waqas Hussain <waqas20@gmail.com>
parents: 5436
diff changeset
138 local mt = getmetatable(o);
9733836629f9 util.json: Make encode(decode("[]"))=="[]".
Waqas Hussain <waqas20@gmail.com>
parents: 5436
diff changeset
139 if mt == array_mt then
9733836629f9 util.json: Make encode(decode("[]"))=="[]".
Waqas Hussain <waqas20@gmail.com>
parents: 5436
diff changeset
140 arraysave(o, buffer);
9733836629f9 util.json: Make encode(decode("[]"))=="[]".
Waqas Hussain <waqas20@gmail.com>
parents: 5436
diff changeset
141 else
9733836629f9 util.json: Make encode(decode("[]"))=="[]".
Waqas Hussain <waqas20@gmail.com>
parents: 5436
diff changeset
142 tablesave(o, buffer);
9733836629f9 util.json: Make encode(decode("[]"))=="[]".
Waqas Hussain <waqas20@gmail.com>
parents: 5436
diff changeset
143 end
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
144 elseif t == "boolean" then
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
145 t_insert(buffer, (o and "true" or "false"));
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
146 else
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
147 t_insert(buffer, "null");
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
148 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
149 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
150
7261
925f848c706d util.json: Variable renaming to avoid shadowing [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 7259
diff changeset
151 function module.encode(obj)
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
152 local t = {};
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
153 simplesave(obj, t);
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
154 return t_concat(t);
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
155 end
7261
925f848c706d util.json: Variable renaming to avoid shadowing [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 7259
diff changeset
156 function module.encode_ordered(obj)
4474
b08a46cf06e6 util.json: Added function encode_ordered(object).
Waqas Hussain <waqas20@gmail.com>
parents: 4404
diff changeset
157 local t = { ordered = true };
b08a46cf06e6 util.json: Added function encode_ordered(object).
Waqas Hussain <waqas20@gmail.com>
parents: 4404
diff changeset
158 simplesave(obj, t);
b08a46cf06e6 util.json: Added function encode_ordered(object).
Waqas Hussain <waqas20@gmail.com>
parents: 4404
diff changeset
159 return t_concat(t);
b08a46cf06e6 util.json: Added function encode_ordered(object).
Waqas Hussain <waqas20@gmail.com>
parents: 4404
diff changeset
160 end
7261
925f848c706d util.json: Variable renaming to avoid shadowing [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 7259
diff changeset
161 function module.encode_array(obj)
5395
ec33d72a08b6 util.json: Add json.encode_array() (thanks B)
Matthew Wild <mwild1@gmail.com>
parents: 4474
diff changeset
162 local t = {};
ec33d72a08b6 util.json: Add json.encode_array() (thanks B)
Matthew Wild <mwild1@gmail.com>
parents: 4474
diff changeset
163 arraysave(obj, t);
ec33d72a08b6 util.json: Add json.encode_array() (thanks B)
Matthew Wild <mwild1@gmail.com>
parents: 4474
diff changeset
164 return t_concat(t);
ec33d72a08b6 util.json: Add json.encode_array() (thanks B)
Matthew Wild <mwild1@gmail.com>
parents: 4474
diff changeset
165 end
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
166
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
167 -----------------------------------
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
168
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
169
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
170 local function _skip_whitespace(json, index)
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
171 return json:find("[^ \t\r\n]", index) or index; -- no need to check \r\n, we converted those to \t
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
172 end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
173 local function _fixobject(obj)
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
174 local __array = obj.__array;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
175 if __array then
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
176 obj.__array = nil;
7261
925f848c706d util.json: Variable renaming to avoid shadowing [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 7259
diff changeset
177 for _, v in ipairs(__array) do
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
178 t_insert(obj, v);
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
179 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
180 end
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
181 local __hash = obj.__hash;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
182 if __hash then
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
183 obj.__hash = nil;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
184 local k;
7261
925f848c706d util.json: Variable renaming to avoid shadowing [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 7259
diff changeset
185 for _, v in ipairs(__hash) do
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
186 if k ~= nil then
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
187 obj[k] = v; k = nil;
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
188 else
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
189 k = v;
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
190 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
191 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
192 end
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
193 return obj;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
194 end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
195 local _readvalue, _readstring;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
196 local function _readobject(json, index)
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
197 local o = {};
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
198 while true do
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
199 local key, val;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
200 index = _skip_whitespace(json, index + 1);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
201 if json:byte(index) ~= 0x22 then -- "\""
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
202 if json:byte(index) == 0x7d then return o, index + 1; end -- "}"
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
203 return nil, "key expected";
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
204 end
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
205 key, index = _readstring(json, index);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
206 if key == nil then return nil, index; end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
207 index = _skip_whitespace(json, index);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
208 if json:byte(index) ~= 0x3a then return nil, "colon expected"; end -- ":"
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
209 val, index = _readvalue(json, index + 1);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
210 if val == nil then return nil, index; end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
211 o[key] = val;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
212 index = _skip_whitespace(json, index);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
213 local b = json:byte(index);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
214 if b == 0x7d then return _fixobject(o), index + 1; end -- "}"
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
215 if b ~= 0x2c then return nil, "object eof"; end -- ","
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
216 end
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
217 end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
218 local function _readarray(json, index)
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
219 local a = {};
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
220 local oindex = index;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
221 while true do
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
222 local val;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
223 val, index = _readvalue(json, index + 1);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
224 if val == nil then
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
225 if json:byte(oindex + 1) == 0x5d then return setmetatable(a, array_mt), oindex + 2; end -- "]"
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
226 return val, index;
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
227 end
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
228 t_insert(a, val);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
229 index = _skip_whitespace(json, index);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
230 local b = json:byte(index);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
231 if b == 0x5d then return setmetatable(a, array_mt), index + 1; end -- "]"
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
232 if b ~= 0x2c then return nil, "array eof"; end -- ","
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
233 end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
234 end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
235 local _unescape_error;
8697
c60fdf148118 util.json: Unescape surrogate pairs
Matthew Wild <mwild1@gmail.com>
parents: 8382
diff changeset
236 local function _unescape_surrogate_func(x)
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
237 local lead, trail = tonumber(x:sub(3, 6), 16), tonumber(x:sub(9, 12), 16);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
238 local codepoint = lead * 0x400 + trail - 0x35FDC00;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
239 local a = codepoint % 64;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
240 codepoint = (codepoint - a) / 64;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
241 local b = codepoint % 64;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
242 codepoint = (codepoint - b) / 64;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
243 local c = codepoint % 64;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
244 codepoint = (codepoint - c) / 64;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
245 return s_char(0xF0 + codepoint, 0x80 + c, 0x80 + b, 0x80 + a);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
246 end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
247 local function _unescape_func(x)
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
248 x = x:match("%x%x%x%x", 3);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
249 if x then
8697
c60fdf148118 util.json: Unescape surrogate pairs
Matthew Wild <mwild1@gmail.com>
parents: 8382
diff changeset
250 local codepoint = tonumber(x, 16)
c60fdf148118 util.json: Unescape surrogate pairs
Matthew Wild <mwild1@gmail.com>
parents: 8382
diff changeset
251 if codepoint >= 0xD800 and codepoint <= 0xDFFF then _unescape_error = true; end -- bad surrogate pair
c60fdf148118 util.json: Unescape surrogate pairs
Matthew Wild <mwild1@gmail.com>
parents: 8382
diff changeset
252 return codepoint_to_utf8(codepoint);
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
253 end
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
254 _unescape_error = true;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
255 end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
256 function _readstring(json, index)
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
257 index = index + 1;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
258 local endindex = json:find("\"", index, true);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
259 if endindex then
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
260 local s = json:sub(index, endindex - 1);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
261 --if s:find("[%z-\31]") then return nil, "control char in string"; end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
262 -- FIXME handle control characters
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
263 _unescape_error = nil;
8697
c60fdf148118 util.json: Unescape surrogate pairs
Matthew Wild <mwild1@gmail.com>
parents: 8382
diff changeset
264 s = s:gsub("\\u[dD][89abAB]%x%x\\u[dD][cdefCDEF]%x%x", _unescape_surrogate_func);
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
265 -- FIXME handle escapes beyond BMP
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
266 s = s:gsub("\\u.?.?.?.?", _unescape_func);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
267 if _unescape_error then return nil, "invalid escape"; end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
268 return s, endindex + 1;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
269 end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
270 return nil, "string eof";
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
271 end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
272 local function _readnumber(json, index)
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
273 local m = json:match("[0-9%.%-eE%+]+", index); -- FIXME do strict checking
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
274 return tonumber(m), index + #m;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
275 end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
276 local function _readnull(json, index)
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
277 local a, b, c = json:byte(index + 1, index + 3);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
278 if a == 0x75 and b == 0x6c and c == 0x6c then
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
279 return null, index + 4;
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
280 end
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
281 return nil, "null parse failed";
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
282 end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
283 local function _readtrue(json, index)
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
284 local a, b, c = json:byte(index + 1, index + 3);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
285 if a == 0x72 and b == 0x75 and c == 0x65 then
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
286 return true, index + 4;
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
287 end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
288 return nil, "true parse failed";
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
289 end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
290 local function _readfalse(json, index)
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
291 local a, b, c, d = json:byte(index + 1, index + 4);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
292 if a == 0x61 and b == 0x6c and c == 0x73 and d == 0x65 then
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
293 return false, index + 5;
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
294 end
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
295 return nil, "false parse failed";
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
296 end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
297 function _readvalue(json, index)
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
298 index = _skip_whitespace(json, index);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
299 local b = json:byte(index);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
300 -- TODO try table lookup instead of if-else?
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
301 if b == 0x7B then -- "{"
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
302 return _readobject(json, index);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
303 elseif b == 0x5B then -- "["
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
304 return _readarray(json, index);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
305 elseif b == 0x22 then -- "\""
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
306 return _readstring(json, index);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
307 elseif b ~= nil and b >= 0x30 and b <= 0x39 or b == 0x2d then -- "0"-"9" or "-"
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
308 return _readnumber(json, index);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
309 elseif b == 0x6e then -- "n"
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
310 return _readnull(json, index);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
311 elseif b == 0x74 then -- "t"
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
312 return _readtrue(json, index);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
313 elseif b == 0x66 then -- "f"
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
314 return _readfalse(json, index);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
315 else
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
316 return nil, "value expected";
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
317 end
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
318 end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
319 local first_escape = {
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
320 ["\\\""] = "\\u0022";
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
321 ["\\\\"] = "\\u005c";
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
322 ["\\/" ] = "\\u002f";
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
323 ["\\b" ] = "\\u0008";
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
324 ["\\f" ] = "\\u000C";
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
325 ["\\n" ] = "\\u000A";
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
326 ["\\r" ] = "\\u000D";
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
327 ["\\t" ] = "\\u0009";
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
328 ["\\u" ] = "\\u";
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
329 };
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
330
7261
925f848c706d util.json: Variable renaming to avoid shadowing [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 7259
diff changeset
331 function module.decode(json)
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
332 json = json:gsub("\\.", first_escape) -- get rid of all escapes except \uXXXX, making string parsing much simpler
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
333 --:gsub("[\r\n]", "\t"); -- \r\n\t are equivalent, we care about none of them, and none of them can be in strings
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5565
diff changeset
334
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
335 -- TODO do encoding verification
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5565
diff changeset
336
5565
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
337 local val, index = _readvalue(json, 1);
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
338 if val == nil then return val, index; end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
339 if json:find("[^ \t\r\n]", index) then return nil, "garbage at eof"; end
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
340
6dd806829226 util.json: New, faster, stricter, more compliant JSON decoder. Now returns nil,err instead of throwing errors on invalid input.
Waqas Hussain <waqas20@gmail.com>
parents: 5563
diff changeset
341 return val;
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
342 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
343
7261
925f848c706d util.json: Variable renaming to avoid shadowing [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 7259
diff changeset
344 function module.test(object)
925f848c706d util.json: Variable renaming to avoid shadowing [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 7259
diff changeset
345 local encoded = module.encode(object);
925f848c706d util.json: Variable renaming to avoid shadowing [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 7259
diff changeset
346 local decoded = module.decode(encoded);
925f848c706d util.json: Variable renaming to avoid shadowing [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 7259
diff changeset
347 local recoded = module.encode(decoded);
3979
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
348 if encoded ~= recoded then
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
349 print("FAILED");
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
350 print("encoded:", encoded);
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
351 print("recoded:", recoded);
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
352 else
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
353 print(encoded);
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
354 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
355 return encoded == recoded;
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
356 end
bf223e6c2b4c util.json: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
357
7261
925f848c706d util.json: Variable renaming to avoid shadowing [luacheck]
Matthew Wild <mwild1@gmail.com>
parents: 7259
diff changeset
358 return module;