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JSONlab: a toolbox to encode/decode JSON files in MATLAB/Octave

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JSONlab: a toolbox to encode/decode JSON files in MATLAB/Octave

by

Qianqian Fang (view profile)

  • 1 file
  • 480 downloads
  • 4.39286

 

19 Oct 2011 (Updated )

JSONlab is an open-source JSON/UBJSON encoder and decoder for MATLAB and Octave.

Editor's Notes:

This file was selected as MATLAB Central Pick of the Week

jsonopt(key,default,varargin)
function val=jsonopt(key,default,varargin)
%
% val=jsonopt(key,default,optstruct)
%
% setting options based on a struct. The struct can be produced
% by varargin2struct from a list of 'param','value' pairs
%
% authors:Qianqian Fang (fangq<at> nmr.mgh.harvard.edu)
%
% $Id: loadjson.m 371 2012-06-20 12:43:06Z fangq $
%
% input:
%      key: a string with which one look up a value from a struct
%      default: if the key does not exist, return default
%      optstruct: a struct where each sub-field is a key 
%
% output:
%      val: if key exists, val=optstruct.key; otherwise val=default
%
% license:
%     BSD License, see LICENSE_BSD.txt files for details
%
% -- this function is part of jsonlab toolbox (http://iso2mesh.sf.net/cgi-bin/index.cgi?jsonlab)
% 

val=default;
if(nargin<=2) return; end
opt=varargin{1};
if(isstruct(opt))
    if(isfield(opt,key))
       val=getfield(opt,key);
    elseif(isfield(opt,lower(key)))
       val=getfield(opt,lower(key));
    end
end

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