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rINSTCONTROL/Utility functions/printSubs.m
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printSubs.m
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% Print valid subscripts for var as cell array.
%
% Example: if var is a structure row array with 2 elements, which have
% fields f1 and f2 the function returns
% {'(1,1).f1','(1,1).f2','(1,2).f1','(1,2).f2'}
%
% If expansion_test is specified, the subscripts are only expanded if the
% test is passed for subpart of var
function sn = printSubs(var, varargin)
p=inputParser();
% own_name is optionally prependend to the names of subs to create
% full expressions that can be used to access parts of var
addParameter(p, 'own_name', '', @(x) assert(...
isvarname(x), '''own_name'' must be a valid variable name.'));
addParameter(p, 'expansion_test', @(x)true, @(x) assert(...
isa(x,'function_handle'), '''no_expand'' must be a function.'));
parse(p, varargin{:});
own_name=p.Results.own_name;
exp_test=p.Results.expansion_test;
sn={};
if ~exp_test(var)
% Do not expand if the test is not passed
sn={''};
elseif length(var)>1
% Expand as array
if iscell(var)
% Cell array
lbrace='{';
rbrace='}';
else
% Regular array
lbrace='(';
rbrace=')';
end
% Create structure to address array elements depending on
% the brace type
S.type=[lbrace,rbrace];
S.subs={};
% Create string for printing formatted indices
sz = size(var);
ind_fmt=lbrace;
for i=1:length(sz)
ind_fmt=[ind_fmt,'%i,']; %#ok<AGROW>
end
ind_fmt(end)=rbrace;
% Iterate over array elements
ind=cell(1, length(sz));
for i=1:numel(var)
% Convert 1D to multi-dimensional index
[ind{:}]=ind2sub(sz,i);
ind_str=sprintf(ind_fmt, ind{:});
% Index the variable according to the array type and
% print the subnames of its element
S.subs={i};
tmp=printSubs(subsref(var,S),'expansion_test',exp_test);
% Prepend array indices to the sub-part names
tmp=cellfun(@(x)[ind_str, x], tmp, 'UniformOutput', false);
sn=[sn; tmp]; %#ok<AGROW>
end
elseif isstruct(var)
% Expand as structure
fn = fieldnames(var);
for i=1:length(fn)
field_str=sprintf('.%s', fn{i});
tmp=printSubs(var.(fn{i}),'expansion_test',exp_test);
tmp=cellfun(@(x)[field_str, x], tmp, 'UniformOutput', false);
sn=[sn; tmp]; %#ok<AGROW>
end
elseif iscell(var)&&length(var)==1
% Expand as single cell
tmp=printSubs(var{1},'expansion_test',exp_test);
sn=cellfun(@(x)['{1}', x], tmp, 'UniformOutput', false);
else
% Do not expand
sn={''};
end
% Optionally prepend the own name of var
if ~isempty(own_name)
sn=cellfun(@(x)[own_name, x], sn, 'UniformOutput', false);
end
end
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