path: root/community/lua-turbo/0001-use-cjson-instead-of-JSON.lua.patch

From 31475d83acb92f3ec4d0cc05e42a5d0c89d3db1f Mon Sep 17 00:00:00 2001
From: Carlo Landmeter <clandmeter@gmail.com>
Date: Wed, 16 Aug 2017 13:11:58 +0200
Subject: [PATCH] use cjson instead of JSON.lua

---
 turbo/3rdparty/JSON.lua | 855 ------------------------------------------------
 turbo/escape.lua        |   6 +-
 2 files changed, 3 insertions(+), 858 deletions(-)
 delete mode 100644 turbo/3rdparty/JSON.lua

diff --git a/turbo/3rdparty/JSON.lua b/turbo/3rdparty/JSON.lua
deleted file mode 100644
index c3cd7c7..0000000
--- a/turbo/3rdparty/JSON.lua
+++ /dev/null
@@ -1,855 +0,0 @@
--- -*- coding: utf-8 -*-
---
--- Copyright 2010-2011 Jeffrey Friedl
--- http://regex.info/blog/
---
-local VERSION = 20111207.5  -- version history at end of file
-local OBJDEF = { VERSION = VERSION }
-
---
--- Simple JSON encoding and decoding in pure Lua.
--- http://www.json.org/
---
---
---   JSON = loadfile "JSON.lua" -- one-time load of the routines
---
---   local lua_value = JSON:decode(raw_json_text)
---
---   local raw_json_text    = JSON:encode(lua_table_or_value)
---   local pretty_json_text = JSON:encode_pretty(lua_table_or_value) -- "pretty printed" version for human readability
---
---
--- DECODING
---
---   JSON = (loadfile "JSON.lua")() -- one-time load of the routines
---
---   local lua_value = JSON:decode(raw_json_text)
---
---   If the JSON text is for an object or an array, e.g.
---     { "what": "books", "count": 3 }
---   or
---     [ "Larry", "Curly", "Moe" ]
---
---   the result is a Lua table, e.g.
---     { what = "books", count = 3 }
---   or
---     { "Larry", "Curly", "Moe" }
---
---
---   The encode and decode routines accept an optional second argument, "etc", which is not used
---   during encoding or decoding, but upon error is passed along to error handlers. It can be of any
---   type (including nil).
---
---   With most errors during decoding, this code calls
---
---      JSON:onDecodeError(message, text, location, etc)
---
---   with a message about the error, and if known, the JSON text being parsed and the byte count
---   where the problem was discovered. You can replace the default JSON:onDecodeError() with your
---   own function.
---
---   The default onDecodeError() merely augments the message with data about the text and the
---   location if known (and if a second 'etc' argument had been provided to decode(), its value is
---   tacked onto the message as well), and then calls JSON.assert(), which itself defaults to Lua's
---   built-in assert(), and can also be overridden.
---
---   For example, in an Adobe Lightroom plugin, you might use something like
---
---          function JSON:onDecodeError(message, text, location, etc)
---             LrErrors.throwUserError("Internal Error: invalid JSON data")
---          end
---
---   or even just
---
---          function JSON.assert(message)
---             LrErrors.throwUserError("Internal Error: " .. message)
---          end
---
---   If JSON:decode() is passed a nil, this is called instead:
---
---      JSON:onDecodeOfNilError(message, nil, nil, etc)
---
---   and if JSON:decode() is passed HTML instead of JSON, this is called:
---
---      JSON:onDecodeOfHTMLError(message, text, nil, etc)
---
---   The use of the fourth 'etc' argument allows stronger coordination between decoding and error
---   reporting, especially when you provide your own error-handling routines. Continuing with the
---   the Adobe Lightroom plugin example:
---
---          function JSON:onDecodeError(message, text, location, etc)
---             local note = "Internal Error: invalid JSON data"
---             if type(etc) = 'table' and etc.photo then
---                note = note .. " while processing for " .. etc.photo:getFormattedMetadata('fileName')
---             end
---             LrErrors.throwUserError(note)
---          end
---
---            :
---            :
---
---          for i, photo in ipairs(photosToProcess) do
---               :
---               :
---               local data = JSON:decode(someJsonText, { photo = photo })
---               :
---               :
---          end
---
---
---
---
-
--- DECODING AND STRICT TYPES
---
---   Because both JSON objects and JSON arrays are converted to Lua tables, it's not normally
---   possible to tell which a Lua table came from, or guarantee decode-encode round-trip
---   equivalency.
---
---   However, if you enable strictTypes, e.g.
---
---      JSON = (loadfile "JSON.lua")() --load the routines
---      JSON.strictTypes = true
---
---   then the Lua table resulting from the decoding of a JSON object or JSON array is marked via Lua
---   metatable, so that when re-encoded with JSON:encode() it ends up as the appropriate JSON type.
---
---   (This is not the default because other routines may not work well with tables that have a
---   metatable set, for example, Lightroom API calls.)
---
---
--- ENCODING
---
---   JSON = (loadfile "JSON.lua")() -- one-time load of the routines
---
---   local raw_json_text    = JSON:encode(lua_table_or_value)
---   local pretty_json_text = JSON:encode_pretty(lua_table_or_value) -- "pretty printed" version for human readability
-
---   On error during encoding, this code calls:
---
---    JSON:onEncodeError(message, etc)
---
---   which you can override in your local JSON object.
---
---
--- SUMMARY OF METHODS YOU CAN OVERRIDE IN YOUR LOCAL LUA JSON OBJECT
---
---    assert
---    onDecodeError
---    onDecodeOfNilError
---    onDecodeOfHTMLError
---    onEncodeError
---
---  If you want to create a separate Lua JSON object with its own error handlers,
---  you can reload JSON.lua or use the :new() method.
---
----------------------------------------------------------------------------
-
-
-local author = "-[ JSON.lua package by Jeffrey Friedl (http://regex.info/blog/lua/json), version " .. tostring(VERSION) .. " ]-"
-local isArray  = { __tostring = function() return "JSON array"  end }    isArray.__index  = isArray
-local isObject = { __tostring = function() return "JSON object" end }    isObject.__index = isObject
-
-
-function OBJDEF:newArray(tbl)
-   return setmetatable(tbl or {}, isArray)
-end
-
-function OBJDEF:newObject(tbl)
-   return setmetatable(tbl or {}, isObject)
-end
-
-local function unicode_codepoint_as_utf8(codepoint)
-   --
-   -- codepoint is a number
-   --
-   if codepoint <= 127 then
-      return string.char(codepoint)
-
-   elseif codepoint <= 2047 then
-      --
-      -- 110yyyxx 10xxxxxx         <-- useful notation from http://en.wikipedia.org/wiki/Utf8
-      --
-      local highpart = math.floor(codepoint / 0x40)
-      local lowpart  = codepoint - (0x40 * highpart)
-      return string.char(0xC0 + highpart,
-                         0x80 + lowpart)
-
-   elseif codepoint <= 65535 then
-      --
-      -- 1110yyyy 10yyyyxx 10xxxxxx
-      --
-      local highpart  = math.floor(codepoint / 0x1000)
-      local remainder = codepoint - 0x1000 * highpart
-      local midpart   = math.floor(remainder / 0x40)
-      local lowpart   = remainder - 0x40 * midpart
-
-      highpart = 0xE0 + highpart
-      midpart  = 0x80 + midpart
-      lowpart  = 0x80 + lowpart
-
-      --
-      -- Check for an invalid character (thanks Andy R. at Adobe).
-      -- See table 3.7, page 93, in http://www.unicode.org/versions/Unicode5.2.0/ch03.pdf#G28070
-      --
-      if ( highpart == 0xE0 and midpart < 0xA0 ) or
-         ( highpart == 0xED and midpart > 0x9F ) or
-         ( highpart == 0xF0 and midpart < 0x90 ) or
-         ( highpart == 0xF4 and midpart > 0x8F )
-      then
-         return "?"
-      else
-         return string.char(highpart,
-                            midpart,
-                            lowpart)
-      end
-
-   else
-      --
-      -- 11110zzz 10zzyyyy 10yyyyxx 10xxxxxx
-      --
-      local highpart  = math.floor(codepoint / 0x40000)
-      local remainder = codepoint - 0x40000 * highpart
-      local midA      = math.floor(remainder / 0x1000)
-      remainder       = remainder - 0x1000 * midA
-      local midB      = math.floor(remainder / 0x40)
-      local lowpart   = remainder - 0x40 * midB
-
-      return string.char(0xF0 + highpart,
-                         0x80 + midA,
-                         0x80 + midB,
-                         0x80 + lowpart)
-   end
-end
-
-function OBJDEF:onDecodeError(message, text, location, etc)
-   if text then
-      if location then
-         message = string.format("%s at char %d of: %s", message, location, text)
-      else
-         message = string.format("%s: %s", message, text)
-      end
-   end
-   if etc ~= nil then
-      message = message .. " (" .. OBJDEF:encode(etc) .. ")"
-   end
-
-   if self.assert then
-      self.assert(false, message)
-   else
-      assert(false, message)
-   end
-end
-
-OBJDEF.onDecodeOfNilError  = OBJDEF.onDecodeError
-OBJDEF.onDecodeOfHTMLError = OBJDEF.onDecodeError
-
-function OBJDEF:onEncodeError(message, etc)
-   if etc ~= nil then
-      message = message .. " (" .. OBJDEF:encode(etc) .. ")"
-   end
-
-   if self.assert then
-      self.assert(false, message)
-   else
-      assert(false, message)
-   end
-end
-
-local function grok_number(self, text, start, etc)
-   --
-   -- Grab the integer part
-   --
-   local integer_part = text:match('^-?[1-9]%d*', start)
-                     or text:match("^-?0",        start)
-
-   if not integer_part then
-      self:onDecodeError("expected number", text, start, etc)
-   end
-
-   local i = start + integer_part:len()
-
-   --
-   -- Grab an optional decimal part
-   --
-   local decimal_part = text:match('^%.%d+', i) or ""
-
-   i = i + decimal_part:len()
-
-   --
-   -- Grab an optional exponential part
-   --
-   local exponent_part = text:match('^[eE][-+]?%d+', i) or ""
-
-   i = i + exponent_part:len()
-
-   local full_number_text = integer_part .. decimal_part .. exponent_part
-   local as_number = tonumber(full_number_text)
-
-   if not as_number then
-      self:onDecodeError("bad number", text, start, etc)
-   end
-
-   return as_number, i
-end
-
-
-local function grok_string(self, text, start, etc)
-
-   if text:sub(start,start) ~= '"' then
-      self:onDecodeError("expected string's opening quote", text, start, etc)
-   end
-
-   local i = start + 1 -- +1 to bypass the initial quote
-   local text_len = text:len()
-   local VALUE = ""
-   while i <= text_len do
-      local c = text:sub(i,i)
-      if c == '"' then
-         return VALUE, i + 1
-      end
-      if c ~= '\\' then
-         VALUE = VALUE .. c
-         i = i + 1
-      elseif text:match('^\\b', i) then
-         VALUE = VALUE .. "\b"
-         i = i + 2
-      elseif text:match('^\\f', i) then
-         VALUE = VALUE .. "\f"
-         i = i + 2
-      elseif text:match('^\\n', i) then
-         VALUE = VALUE .. "\n"
-         i = i + 2
-      elseif text:match('^\\r', i) then
-         VALUE = VALUE .. "\r"
-         i = i + 2
-      elseif text:match('^\\t', i) then
-         VALUE = VALUE .. "\t"
-         i = i + 2
-      else
-         local hex = text:match('^\\u([0123456789aAbBcCdDeEfF][0123456789aAbBcCdDeEfF][0123456789aAbBcCdDeEfF][0123456789aAbBcCdDeEfF])', i)
-         if hex then
-            i = i + 6 -- bypass what we just read
-
-            -- We have a Unicode codepoint. It could be standalone, or if in the proper range and
-            -- followed by another in a specific range, it'll be a two-code surrogate pair.
-            local codepoint = tonumber(hex, 16)
-            if codepoint >= 0xD800 and codepoint <= 0xDBFF then
-               -- it's a hi surrogate... see whether we have a following low
-               local lo_surrogate = text:match('^\\u([dD][cdefCDEF][0123456789aAbBcCdDeEfF][0123456789aAbBcCdDeEfF])', i)
-               if lo_surrogate then
-                  i = i + 6 -- bypass the low surrogate we just read
-                  codepoint = 0x2400 + (codepoint - 0xD800) * 0x400 + tonumber(lo_surrogate, 16)
-               else
-                  -- not a proper low, so we'll just leave the first codepoint as is and spit it out.
-               end
-            end
-            VALUE = VALUE .. unicode_codepoint_as_utf8(codepoint)
-
-         else
-
-            -- just pass through what's escaped
-            VALUE = VALUE .. text:match('^\\(.)', i)
-            i = i + 2
-         end
-      end
-   end
-
-   self:onDecodeError("unclosed string", text, start, etc)
-end
-
-local function skip_whitespace(text, start)
-
-   local match_start, match_end = text:find("^[ \n\r\t]+", start) -- [http://www.ietf.org/rfc/rfc4627.txt] Section 2
-   if match_end then
-      return match_end + 1
-   else
-      return start
-   end
-end
-
-local grok_one -- assigned later
-
-local function grok_object(self, text, start, etc)
-   if not text:sub(start,start) == '{' then
-      self:onDecodeError("expected '{'", text, start, etc)
-   end
-
-   local i = skip_whitespace(text, start + 1) -- +1 to skip the '{'
-
-   local VALUE = self.strictTypes and self:newObject { } or { }
-
-   if text:sub(i,i) == '}' then
-      return VALUE, i + 1
-   end
-   local text_len = text:len()
-   while i <= text_len do
-      local key, new_i = grok_string(self, text, i, etc)
-
-      i = skip_whitespace(text, new_i)
-
-      if text:sub(i, i) ~= ':' then
-         self:onDecodeError("expected colon", text, i, etc)
-      end
-
-      i = skip_whitespace(text, i + 1)
-
-      local val, new_i = grok_one(self, text, i)
-
-      VALUE[key] = val
-
-      --
-      -- Expect now either '}' to end things, or a ',' to allow us to continue.
-      --
-      i = skip_whitespace(text, new_i)
-
-      local c = text:sub(i,i)
-
-      if c == '}' then
-         return VALUE, i + 1
-      end
-
-      if text:sub(i, i) ~= ',' then
-         self:onDecodeError("expected comma or '}'", text, i, etc)
-      end
-
-      i = skip_whitespace(text, i + 1)
-   end
-
-   self:onDecodeError("unclosed '{'", text, start, etc)
-end
-
-local function grok_array(self, text, start, etc)
-   if not text:sub(start,start) == '[' then
-      self:onDecodeError("expected '['", text, start, etc)
-   end
-
-   local i = skip_whitespace(text, start + 1) -- +1 to skip the '['
-   local VALUE = self.strictTypes and self:newArray { } or { }
-   if text:sub(i,i) == ']' then
-      return VALUE, i + 1
-   end
-
-   local text_len = text:len()
-   while i <= text_len do
-      local val, new_i = grok_one(self, text, i)
-
-      table.insert(VALUE, val)
-
-      i = skip_whitespace(text, new_i)
-
-      --
-      -- Expect now either ']' to end things, or a ',' to allow us to continue.
-      --
-      local c = text:sub(i,i)
-      if c == ']' then
-         return VALUE, i + 1
-      end
-      if text:sub(i, i) ~= ',' then
-         self:onDecodeError("expected comma or '['", text, i, etc)
-      end
-      i = skip_whitespace(text, i + 1)
-   end
-   self:onDecodeError("unclosed '['", text, start, etc)
-end
-
-
-grok_one = function(self, text, start, etc)
-   -- Skip any whitespace
-   start = skip_whitespace(text, start)
-
-   if start > text:len() then
-      self:onDecodeError("unexpected end of string", text, nil, etc)
-   end
-
-   if text:find('^"', start) then
-      return grok_string(self, text, start, etc)
-
-   elseif text:find('^[-0123456789 ]', start) then
-      return grok_number(self, text, start, etc)
-
-   elseif text:find('^%{', start) then
-      return grok_object(self, text, start, etc)
-
-   elseif text:find('^%[', start) then
-      return grok_array(self, text, start, etc)
-
-   elseif text:find('^true', start) then
-      return true, start + 4
-
-   elseif text:find('^false', start) then
-      return false, start + 5
-
-   elseif text:find('^null', start) then
-      return nil, start + 4
-
-   else
-      self:onDecodeError("can't parse JSON", text, start, etc)
-   end
-end
-
-function OBJDEF:decode(text, etc)
-   if type(self) ~= 'table' or self.__index ~= OBJDEF then
-      OBJDEF:onDecodeError("JSON:decode must be called in method format", nil, nil, etc)
-   end
-
-   if text == nil then
-      self:onDecodeOfNilError(string.format("nil passed to JSON:decode()"), nil, nil, etc)
-   elseif type(text) ~= 'string' then
-      self:onDecodeError(string.format("expected string argument to JSON:decode(), got %s", type(text)), nil, nil, etc)
-   end
-
-   if text:match('^%s*$') then
-      return nil
-   end
-
-   if text:match('^%s*<') then
-      -- Can't be JSON... we'll assume it's HTML
-      self:onDecodeOfHTMLError(string.format("html passed to JSON:decode()"), text, nil, etc)
-   end
-
-   --
-   -- Ensure that it's not UTF-32 or UTF-16.
-   -- Those are perfectly valid encodings for JSON (as per RFC 4627 section 3),
-   -- but this package can't handle them.
-   --
-   if text:sub(1,1):byte() == 0 or (text:len() >= 2 and text:sub(2,2):byte() == 0) then
-      self:onDecodeError("JSON package groks only UTF-8, sorry", text, nil, etc)
-   end
-
-   local success, value = pcall(grok_one, self, text, 1, etc)
-   if success then
-      return value
-   else
-      -- should never get here... JSON parse errors should have been caught earlier
-      assert(false, value)
-      return nil
-   end
-end
-
-local function backslash_replacement_function(c)
-   if c == "\n" then
-      return "\\n"
-   elseif c == "\r" then
-      return "\\r"
-   elseif c == "\t" then
-      return "\\t"
-   elseif c == "\b" then
-      return "\\b"
-   elseif c == "\f" then
-      return "\\f"
-   elseif c == '"' then
-      return '\\"'
-   elseif c == '\\' then
-      return '\\\\'
-   else
-      return string.format("\\u%04x", c:byte())
-   end
-end
-
-local chars_to_be_escaped_in_JSON_string
-   = '['
-   ..    '"'    -- class sub-pattern to match a double quote
-   ..    '%\\'  -- class sub-pattern to match a backslash
-   ..    '%z'   -- class sub-pattern to match a null
-   ..    '\001' .. '-' .. '\031' -- class sub-pattern to match control characters
-   .. ']'
-
-local function json_string_literal(value)
-   local newval = value:gsub(chars_to_be_escaped_in_JSON_string, backslash_replacement_function)
-   return '"' .. newval .. '"'
-end
-
-local function object_or_array(self, T, etc)
-   --
-   -- We need to inspect all the keys... if there are any strings, we'll convert to a JSON
-   -- object. If there are only numbers, it's a JSON array.
-   --
-   -- If we'll be converting to a JSON object, we'll want to sort the keys so that the
-   -- end result is deterministic.
-   --
-   local string_keys = { }
-   local seen_number_key = false
-   local maximum_number_key
-
-   for key in pairs(T) do
-      if type(key) == 'number' then
-         seen_number_key = true
-         if not maximum_number_key or maximum_number_key < key then
-            maximum_number_key = key
-         end
-      elseif type(key) == 'string' then
-         table.insert(string_keys, key)
-      else
-         self:onEncodeError("can't encode table with a key of type " .. type(key), etc)
-      end
-   end
-
-   if seen_number_key and #string_keys > 0 then
-      --
-      -- Mixed key types... don't know what to do, so bail
-      --
-      self:onEncodeError("a table with both numeric and string keys could be an object or array; aborting", etc)
-
-   elseif #string_keys == 0  then
-      --
-      -- An array
-      --
-      if seen_number_key then
-         return nil, maximum_number_key -- an array
-      else
-         --
-         -- An empty table...
-         --
-         if tostring(T) == "JSON array" then
-            return nil
-         elseif tostring(T) == "JSON object" then
-            return { }
-         else
-            -- have to guess, so we'll pick array, since empty arrays are likely more common than empty objects
-            return nil
-         end
-      end
-   else
-      --
-      -- An object, so return a list of keys
-      --
-      table.sort(string_keys)
-      return string_keys
-   end
-end
-
---
--- Encode
---
-local encode_value -- must predeclare because it calls itself
-function encode_value(self, value, parents, etc)
-
-
-   if value == nil then
-      return 'null'
-   end
-
-   if type(value) == 'string' then
-      return json_string_literal(value)
-   elseif type(value) == 'number' then
-      if value ~= value then
-         --
-         -- NaN (Not a Number).
-         -- JSON has no NaN, so we have to fudge the best we can. This should really be a package option.
-         --
-         return "null"
-      elseif value >= math.huge then
-         --
-         -- Positive infinity. JSON has no INF, so we have to fudge the best we can. This should
-         -- really be a package option. Note: at least with some implementations, positive infinity
-         -- is both ">= math.huge" and "<= -math.huge", which makes no sense but that's how it is.
-         -- Negative infinity is properly "<= -math.huge". So, we must be sure to check the ">="
-         -- case first.
-         --
-         return "1e+9999"
-      elseif value <= -math.huge then
-         --
-         -- Negative infinity.
-         -- JSON has no INF, so we have to fudge the best we can. This should really be a package option.
-         --
-         return "-1e+9999"
-      else
-         return tostring(value)
-      end
-   elseif type(value) == 'boolean' then
-      return tostring(value)
-
-   elseif type(value) ~= 'table' then
-      self:onEncodeError("can't convert " .. type(value) .. " to JSON", etc)
-
-   else
-      --
-      -- A table to be converted to either a JSON object or array.
-      --
-      local T = value
-
-      if parents[T] then
-         self:onEncodeError("table " .. tostring(T) .. " is a child of itself", etc)
-      else
-         parents[T] = true
-      end
-
-      local result_value
-
-      local object_keys, maximum_number_key = object_or_array(self, T, etc)
-      if maximum_number_key then
-         --
-         -- An array...
-         --
-         local ITEMS = { }
-         for i = 1, maximum_number_key do
-            table.insert(ITEMS, encode_value(self, T[i], parents, etc))
-         end
-
-         result_value = "[" .. table.concat(ITEMS, ",") .. "]"
-      elseif object_keys then
-         --
-         -- An object
-         --
-
-         --
-         -- We'll always sort the keys, so that comparisons can be made on
-         -- the results, etc. The actual order is not particularly
-         -- important (e.g. it doesn't matter what character set we sort
-         -- as); it's only important that it be deterministic... the same
-         -- every time.
-         --
-         local PARTS = { }
-         for _, key in ipairs(object_keys) do
-            local encoded_key = encode_value(self, tostring(key), parents, etc)
-            local encoded_val = encode_value(self, T[key],        parents, etc)
-            table.insert(PARTS, string.format("%s:%s", encoded_key, encoded_val))
-         end
-         result_value = "{" .. table.concat(PARTS, ",") .. "}"
-      else
-         --
-         -- An empty array/object... we'll treat it as an array, though it should really be an option
-         --
-         result_value = "[]"
-      end
-
-      parents[T] = false
-      return result_value
-   end
-end
-
-local encode_pretty_value -- must predeclare because it calls itself
-function encode_pretty_value(self, value, parents, indent, etc)
-
-   if type(value) == 'string' then
-      return json_string_literal(value)
-
-   elseif type(value) == 'number' then
-      return tostring(value)
-
-   elseif type(value) == 'boolean' then
-      return tostring(value)
-
-   elseif type(value) == 'nil' then
-      return 'null'
-
-   elseif type(value) ~= 'table' then
-      self:onEncodeError("can't convert " .. type(value) .. " to JSON", etc)
-
-   else
-      --
-      -- A table to be converted to either a JSON object or array.
-      --
-      local T = value
-
-      if parents[T] then
-         self:onEncodeError("table " .. tostring(T) .. " is a child of itself", etc)
-      end
-      parents[T] = true
-
-      local result_value
-
-      local object_keys = object_or_array(self, T, etc)
-      if not object_keys then
-         --
-         -- An array...
-         --
-         local ITEMS = { }
-         for i = 1, #T do
-            table.insert(ITEMS, encode_pretty_value(self, T[i], parents, indent, etc))
-         end
-
-         result_value = "[ " .. table.concat(ITEMS, ", ") .. " ]"
-
-      else
-
-         --
-         -- An object -- can keys be numbers?
-         --
-
-         local KEYS = { }
-         local max_key_length = 0
-         for _, key in ipairs(object_keys) do
-            local encoded = encode_pretty_value(self, tostring(key), parents, "", etc)
-            max_key_length = math.max(max_key_length, #encoded)
-            table.insert(KEYS, encoded)
-         end
-         local key_indent = indent .. "    "
-         local subtable_indent = indent .. string.rep(" ", max_key_length + 2 + 4)
-         local FORMAT = "%s%" .. tostring(max_key_length) .. "s: %s"
-
-         local COMBINED_PARTS = { }
-         for i, key in ipairs(object_keys) do
-            local encoded_val = encode_pretty_value(self, T[key], parents, subtable_indent, etc)
-            table.insert(COMBINED_PARTS, string.format(FORMAT, key_indent, KEYS[i], encoded_val))
-         end
-         result_value = "{\n" .. table.concat(COMBINED_PARTS, ",\n") .. "\n" .. indent .. "}"
-      end
-
-      parents[T] = false
-      return result_value
-   end
-end
-
-function OBJDEF:encode(value, etc)
-   if type(self) ~= 'table' or self.__index ~= OBJDEF then
-      OBJDEF:onEncodeError("JSON:encode must be called in method format", etc)
-   end
-
-   local parents = {}
-   return encode_value(self, value, parents, etc)
-end
-
-function OBJDEF:encode_pretty(value, etc)
-   local parents = {}
-   local subtable_indent = ""
-   return encode_pretty_value(self, value, parents, subtable_indent, etc)
-end
-
-function OBJDEF.__tostring()
-   return "JSON encode/decode package"
-end
-
-OBJDEF.__index = OBJDEF
-
-function OBJDEF:new(args)
-   local new = { }
-
-   if args then
-      for key, val in pairs(args) do
-         new[key] = val
-      end
-   end
-
-   return setmetatable(new, OBJDEF)
-end
-
-return OBJDEF:new()
-
---
--- Version history:
---
---   20111207.5    Added support for the 'etc' arguments, for better error reporting.
---
---   20110731.4    More feedback from David Kolf on how to make the tests for Nan/Infinity system independent.
---
---   20110730.3    Incorporated feedback from David Kolf at http://lua-users.org/wiki/JsonModules:
---
---                   * When encoding lua for JSON, Sparse numeric arrays are now handled by
---                     spitting out full arrays, such that
---                        JSON:encode({"one", "two", [10] = "ten"})
---                     returns
---                        ["one","two",null,null,null,null,null,null,null,"ten"]
---
---                     In 20100810.2 and earlier, only up to the first non-null value would have been retained.
---
---                   * When encoding lua for JSON, numeric value NaN gets spit out as null, and infinity as "1+e9999".
---                     Version 20100810.2 and earlier created invalid JSON in both cases.
---
---                   * Unicode surrogate pairs are now detected when decoding JSON.
---
---   20100810.2    added some checking to ensure that an invalid Unicode character couldn't leak in to the UTF-8 encoding
---
---   20100731.1    initial public release
---
diff --git a/turbo/escape.lua b/turbo/escape.lua
index 81678f7..e489337 100644
--- a/turbo/escape.lua
+++ b/turbo/escape.lua
@@ -20,7 +20,7 @@
 -- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 -- SOFTWARE."
 
-local json = require('turbo.3rdparty.JSON')
+local json = require('cjson')
 
 local escape = {} -- escape namespace
 
@@ -28,7 +28,7 @@ local escape = {} -- escape namespace
 -- @param t Value to JSON encode.
 -- @note May raise a error if table could not be decoded.
 function escape.json_encode(t)
-    return json:encode(t)
+    return json.encode(t)
 end
 
 --- Decode a JSON string to table.
@@ -36,7 +36,7 @@ end
 -- Lua primitives.
 -- @return (Table)
 function escape.json_decode(s)
-    return json:decode(s)
+    return json.decode(s)
 end
 
 local function _unhex(hex) return string.char(tonumber(hex, 16)) end
-- 
2.14.0