[x3d-public] MFString quoting [was: interesting sample] JSON escaping example

[Don Brutzman]

On 4/26/2017 4:02 PM, yottzumm at gmail.com wrote:
> I do have a problem with the JSON encoding for the attached file (translated by X3dToJson.xslt).  Let me know if you think otherwise.  Look at all the \\\\\.

i suspect the issue is illustrated by the following SFString within an MFString

	X3D  "quote mark  \"  is ""
	JSON "empty string \\\\\"\\\\\" skips a line:",

will try to break it down.

double-backslash escaping going on here for JSON; so internal content-only correspondences should likely be

	[X3D ]	\
	[JSON]	\\

	[X3D ]	"
	[JSON]	\"

	[X3D ]	\"
	[JSON]	\\\"

	[X3D ]	quote mark  \"  is "
	[JSON]	quote mark \\\" is "

please count.  does that look right?

if so, then it looks like the X3dToJson.xslt is overzealously prepending 2 extra backslashes in this particular case (one of several).

if not, then please advise what the right answer is.

also please re-advise, where are the JSON backslash-related rules?

if we can agree on what the right answer looks like, then i will dive back into the independently XML/XSLT/XPath escaped (and obtw recursive) stylesheet template that consumes/produces this stuff to try doing the job correctly.  (gulp!)

p.s. if anyone out there isn't dizzy yet, congrats!


> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
> 
> *From: *Andreas Plesch <mailto:andreasplesch at gmail.com>
> *Sent: *Wednesday, April 26, 2017 5:21 PM
> *To: *John Carlson <mailto:yottzumm at gmail.com>
> *Cc: *Don Brutzman <mailto:brutzman at nps.edu>; X3D Graphics public mailing list <mailto:x3d-public at web3d.org>
> *Subject: *Re: [x3d-public] MFString quoting [was: interesting sample]
> 
> On Wed, Apr 26, 2017 at 3:55 PM, <yottzumm at gmail.com <mailto:yottzumm at gmail.com>> wrote:
> 
>     It’s
> 
>     http://x3dgraphics.com/slidesets/X3dForWebAuthors/Chapter02GeometryPrimitives.pdf
> 
>     Got caught in the grand renaming.  Also the parent page is wrong.
> 
> Thanks.
all the best, Don
-- 
Don Brutzman  Naval Postgraduate School, Code USW/Br       brutzman at nps.edu
Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman