Hi, the JSON parser handles backslash escapes improperly. Example:
local data = [[ { "escapes" : "(\")(\\)(\b)(\f)(\n)(\r)(\t)",
"invalid" : "\'\v" } ]]
local stuff = utilities.json.tolua (data)
inspect(stuff)
Currently it chokes on double quotes and treats the other escapes
like Lua. Fix suggestion attached.
Best regards,
Philipp
--- util-jsn.lua.orig 2013-07-08 00:09:21.834400224 +0200
+++ util-jsn.lua 2013-07-08 00:54:25.889668771 +0200
@@ -15,7 +15,7 @@
-- Reminder for me: check usage in framework and extend when needed. Also document
-- it in the cld lib documentation.
-local P, V, R, S, C, Cc, Cs, Ct, Cf, Cg = lpeg.P, lpeg.V, lpeg.R, lpeg.S, lpeg.C, lpeg.Cc, lpeg.Cs, lpeg.Ct, lpeg.Cf, lpeg.Cg
+local P, V, R, S, C, Cc, Cs, Ct, Cf, Cg, Cp = lpeg.P, lpeg.V, lpeg.R, lpeg.S, lpeg.C, lpeg.Cc, lpeg.Cs, lpeg.Ct, lpeg.Cf, lpeg.Cg, lpeg.Cp
local lpegmatch = lpeg.match
local format = string.format
local utfchar = utf.char
@@ -42,7 +42,15 @@
local whitespace = lpeg.patterns.whitespace
local optionalws = whitespace^0
-local escape = C(P("\\u") / "0x" * S("09","AF","af")) / function(s) return utfchar(tonumber(s)) end
+local escape_a = C(P("\\u") / "0x" * S("09","AF","af")) / function(s) return utfchar(tonumber(s)) end
+local escape_b = P([[\]]) / "" * S([["\/]]) --> represent themselves
+local escape_c = P([[\b]]) / "\010" --> backspace
+ + P([[\f]]) / "\014" --> form feed
+ + P([[\n]]) / "\n"
+ + P([[\r]]) / "\r"
+ + P([[\t]]) / "\t"
+local invalid = P([[\]]) / "" * (Cp() * P(1) / function (pos, chr) --[[ bug_user_about_invalid_escape (chr, pos) ]] return "" end)
+local escape = escape_a + escape_b + escape_c + invalid
local jstring = dquote * Cs((escape + (1-dquote))^0) * dquote
local jtrue = P("true") * Cc(true)
local jfalse = P("false") * Cc(false)
pgpKZ5aYPxA60.pgp
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