From: Hans Hagen <pragma@wxs.nl>
To: ntg-context@ntg.nl
Subject: Re: [util-jsn] incorrect handling of escapes
Date: Mon, 08 Jul 2013 18:18:31 +0200 [thread overview]
Message-ID: <51DAE657.20704@wxs.nl> (raw)
In-Reply-To: <20130707225628.GA7955@phlegethon>
On 7/8/2013 12:56 AM, Philipp Gesang wrote:
> 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.
local escapes = {
-- ["\\"] = "\\", -- lua will escape these
-- ["/"] = "/", -- no need to escape this one
["b"] = "\010",
["f"] = "\014",
["n"] = "\n",
["r"] = "\r",
["t"] = "\t",
}
local escape_un = C(P("\\u") / "0x" * S("09","AF","af")) / function(s)
return utfchar(tonumber(s)) end
local escape_bs = P([[\]]) / "" * (P(1) / escapes) -- if not found then
P(1) is returned i.e. the to be escaped char
local jstring = dquote * Cs((escape_un + escape_bs + (1-dquote))^0) *
dquote
> Best regards,
> Philipp
>
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive : http://foundry.supelec.fr/projects/contextrev/
> wiki : http://contextgarden.net
> ___________________________________________________________________________________
>
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next prev parent reply other threads:[~2013-07-08 16:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-07 22:56 Philipp Gesang
2013-07-08 16:18 ` Hans Hagen [this message]
2013-07-09 9:37 ` Philipp Gesang
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