forked from public/swade-fr-content
78 lines
1.8 KiB
Lua
78 lines
1.8 KiB
Lua
|
--[[
|
||
|
|
Licensed according to the included 'LICENSE' document
|
||
|
|
Author: Thomas Harning Jr <harningt@gmail.com>
|
||
|
|
]]
|
||
|
|
local pairs = pairs
|
||
|
|
local assert = assert
|
||
|
|
|
||
|
|
local type = type
|
||
|
|
local tostring = tostring
|
||
|
|
|
||
|
|
local table_concat = require("table").concat
|
||
|
|
local jsonutil = require("json.util")
|
||
|
|
|
||
|
|
local _ENV = nil
|
||
|
|
|
||
|
|
local defaultOptions = {
|
||
|
|
}
|
||
|
|
|
||
|
|
local modeOptions = {}
|
||
|
|
|
||
|
|
local function mergeOptions(options, mode)
|
||
|
|
jsonutil.doOptionMerge(options, false, 'object', defaultOptions, mode and modeOptions[mode])
|
||
|
|
end
|
||
|
|
|
||
|
|
--[[
|
||
|
|
Cleanup function to unmark a value as in the encoding process and return
|
||
|
|
trailing results
|
||
|
|
]]
|
||
|
|
local function unmarkAfterEncode(tab, state, ...)
|
||
|
|
state.already_encoded[tab] = nil
|
||
|
|
return ...
|
||
|
|
end
|
||
|
|
--[[
|
||
|
|
Encode a table as a JSON Object ( keys = strings, values = anything else )
|
||
|
|
]]
|
||
|
|
local function encodeTable(tab, options, state)
|
||
|
|
-- Make sure this value hasn't been encoded yet
|
||
|
|
state.check_unique(tab)
|
||
|
|
local encode = state.encode
|
||
|
|
local compositeEncoder = state.outputEncoder.composite
|
||
|
|
local valueEncoder = [[
|
||
|
|
local first = true
|
||
|
|
for k, v in pairs(composite) do
|
||
|
|
local ti = type(k)
|
||
|
|
assert(ti == 'string' or ti == 'number' or ti == 'boolean', "Invalid object index type: " .. ti)
|
||
|
|
local name = encode(tostring(k), state, true)
|
||
|
|
if first then
|
||
|
|
first = false
|
||
|
|
else
|
||
|
|
name = ',' .. name
|
||
|
|
end
|
||
|
|
PUTVALUE(name .. ':')
|
||
|
|
local val = encode(v, state)
|
||
|
|
val = val or ''
|
||
|
|
if val then
|
||
|
|
PUTVALUE(val)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
]]
|
||
|
|
return unmarkAfterEncode(tab, state, compositeEncoder(valueEncoder, '{', '}', nil, tab, encode, state))
|
||
|
|
end
|
||
|
|
|
||
|
|
local function getEncoder(options)
|
||
|
|
options = options and jsonutil.merge({}, defaultOptions, options) or defaultOptions
|
||
|
|
return {
|
||
|
|
table = function(tab, state)
|
||
|
|
return encodeTable(tab, options, state)
|
||
|
|
end
|
||
|
|
}
|
||
|
|
end
|
||
|
|
|
||
|
|
local object = {
|
||
|
|
mergeOptions = mergeOptions,
|
||
|
|
getEncoder = getEncoder
|
||
|
|
}
|
||
|
|
|
||
|
|
return object
|