foundryvtt-swade-fr/tools/luajson/json/decode/util.lua

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2022-05-28 09:30:19 +02:00
--[[
Licensed according to the included 'LICENSE' document
Author: Thomas Harning Jr <harningt@gmail.com>
]]
local lpeg = require("lpeg")
local select = select
local pairs, ipairs = pairs, ipairs
local tonumber = tonumber
local string_char = require("string").char
local rawset = rawset
local jsonutil = require("json.util")
local error = error
local setmetatable = setmetatable
local table_concat = require("table").concat
local merge = require("json.util").merge
local _ENV = nil
local function get_invalid_character_info(input, index)
local parsed = input:sub(1, index)
local bad_character = input:sub(index, index)
local _, line_number = parsed:gsub('\n',{})
local last_line = parsed:match("\n([^\n]+.)$") or parsed
return line_number, #last_line, bad_character, last_line
end
local function build_report(msg)
local fmt = msg:gsub("%%", "%%%%") .. " @ character: %i %i:%i [%s] line:\n%s"
return lpeg.P(function(data, pos)
local line, line_index, bad_char, last_line = get_invalid_character_info(data, pos)
local text = fmt:format(pos, line, line_index, bad_char, last_line)
error(text)
end) * 1
end
local function unexpected()
local msg = "unexpected character"
return build_report(msg)
end
local function denied(item, option)
local msg
if option then
msg = ("'%s' denied by option set '%s'"):format(item, option)
else
msg = ("'%s' denied"):format(item)
end
return build_report(msg)
end
-- 09, 0A, 0B, 0C, 0D, 20
local ascii_space = lpeg.S("\t\n\v\f\r ")
local unicode_space
do
local chr = string_char
local u_space = ascii_space
-- \u0085 \u00A0
u_space = u_space + lpeg.P(chr(0xC2)) * lpeg.S(chr(0x85) .. chr(0xA0))
-- \u1680 \u180E
u_space = u_space + lpeg.P(chr(0xE1)) * (lpeg.P(chr(0x9A, 0x80)) + chr(0xA0, 0x8E))
-- \u2000 - \u200A, also 200B
local spacing_end = ""
for i = 0x80,0x8b do
spacing_end = spacing_end .. chr(i)
end
-- \u2028 \u2029 \u202F
spacing_end = spacing_end .. chr(0xA8) .. chr(0xA9) .. chr(0xAF)
u_space = u_space + lpeg.P(chr(0xE2, 0x80)) * lpeg.S(spacing_end)
-- \u205F
u_space = u_space + lpeg.P(chr(0xE2, 0x81, 0x9F))
-- \u3000
u_space = u_space + lpeg.P(chr(0xE3, 0x80, 0x80))
-- BOM \uFEFF
u_space = u_space + lpeg.P(chr(0xEF, 0xBB, 0xBF))
unicode_space = u_space
end
local identifier = lpeg.R("AZ","az","__") * lpeg.R("AZ","az", "__", "09") ^0
local hex = lpeg.R("09","AF","af")
local hexpair = hex * hex
local comments = {
cpp = lpeg.P("//") * (1 - lpeg.P("\n"))^0 * lpeg.P("\n"),
c = lpeg.P("/*") * (1 - lpeg.P("*/"))^0 * lpeg.P("*/")
}
local comment = comments.cpp + comments.c
local ascii_ignored = (ascii_space + comment)^0
local unicode_ignored = (unicode_space + comment)^0
-- Parse the lpeg version skipping patch-values
-- LPEG <= 0.7 have no version value... so 0.7 is value
local DecimalLpegVersion = lpeg.version and tonumber(lpeg.version():match("^(%d+%.%d+)")) or 0.7
local function setObjectKeyForceNumber(t, key, value)
key = tonumber(key) or key
return rawset(t, key, value)
end
local util = {
unexpected = unexpected,
denied = denied,
ascii_space = ascii_space,
unicode_space = unicode_space,
identifier = identifier,
hex = hex,
hexpair = hexpair,
comments = comments,
comment = comment,
ascii_ignored = ascii_ignored,
unicode_ignored = unicode_ignored,
DecimalLpegVersion = DecimalLpegVersion,
get_invalid_character_info = get_invalid_character_info,
setObjectKeyForceNumber = setObjectKeyForceNumber
}
return util