loadjson sensitive to tabs in whitespace?

[lebedov]

It seems that the presence of tabs in a JSON file can cause loadjson() to load certain files differently. Using revision f8def3d of jsonlab with either MATLAB R2016a or Octave 4.2.0, loading foo.json from files.zip (which contains tabs) using data = loadjson('foo.json') causes data.a.b.c to be created as a cell array, while loading bar.json (which contains only spaces) causes data.a.b.c to be created as a matrix. Shouldn't c always be created as a matrix regardless of the whitespace?

[fangq]

@lebedov, thanks for reporting this issue. I debugged loadjson with both of your provided json files, and found the issue was caused by sscanf when parsing trailing whitespace in an array construct. for example:

[obj, count, errmsg, nextidx]=sscanf(sprintf('1,2,3'),'%f,',[1,inf])

and

[obj, count, errmsg, nextidx]=sscanf(sprintf('1,2,3\t'),'%f,',[1,inf])

return different errmsg and nextidx outputs. I added one line to remove the trailing white space, and now both inputs generate the same array. let me know if there is any problem with this fix.

[lebedov]

Looks good so far. Thanks!