source: trunk/src/xml2struct.m @ 985

Last change on this file since 985 was 978, checked in by g7moreau, 8 years ago
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[356]1% 'xml2struct': read an xml file as a Matlab structure, converts numeric character strings into numbers
2%-----------------------------------------------------------------------
[686]3% function [s,RootTag,errormsg]=xml2struct(filename,varargin)
[356]4%
5% OUTPUT:
6% s= Matlab structure corresponding to the input xml file
[686]7% RootTag= name of the root tag in the xml file
8% errormsg: errormessage, ='' by default
[356]9%
10% INPUT:
11% filename: name of the xml file
[686]12% varargin: optional list of strings to restrict the reading to a selection of subtrees, for instance 'GeometryCalib' (save reading time)
[356]13
[809]14%=======================================================================
[978]15% Copyright 2008-2017, LEGI UMR 5519 / CNRS UGA G-INP, Grenoble, France
[930]16
[809]17%   http://www.legi.grenoble-inp.fr
18%   Joel.Sommeria - Joel.Sommeria (A) legi.cnrs.fr
19%
20%     This file is part of the toolbox UVMAT.
21%
22%     UVMAT is free software; you can redistribute it and/or modify
23%     it under the terms of the GNU General Public License as published
24%     by the Free Software Foundation; either version 2 of the license,
25%     or (at your option) any later version.
26%
27%     UVMAT is distributed in the hope that it will be useful,
28%     but WITHOUT ANY WARRANTY; without even the implied warranty of
29%     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
30%     GNU General Public License (see LICENSE.txt) for more details.
31%=======================================================================
32
[686]33function [s,RootTag,errormsg]=xml2struct(filename,varargin)
[685]34s=[];
[686]35RootTag='';
[685]36errormsg='';
37try
[772]38    t=xmltree(filename);% read the file as an xmltree object t
[685]39catch ME
40    errormsg=ME.message;
[687]41    if ~isempty(regexp(ME.message,'Undefined function'))||~isempty(regexp(ME.message,'Missing'))
[686]42        errormsg=[errormsg ': package xmltree not correctly installed, reload it from www.artefact.tk/software/matlab/xml'];
[685]43    end
44    return
45end
[565]46iline=0;
[685]47
[686]48while isempty(RootTag)
[565]49    iline=iline+1;
50    if strcmp(get(t,iline,'type'),'element')
[686]51        RootTag=get(t,iline,'name');
[565]52    end
53end
[560]54if nargin>1
55    for isub=1:nargin-1
[686]56        uid_sub=find(t,['/' RootTag '/' varargin{isub}]);
[565]57        if isempty(uid_sub)
58            s.(varargin{isub})=[];
59        else
[560]60        tsub=branch(t,uid_sub);
61        ss=convert(tsub);
62        s.(varargin{isub})=convert_string(ss);
[565]63        end
[560]64    end
65else
[772]66    ss=convert(t);%transform the xmltree object into a Matlab structure.
[560]67    s=convert_string(ss);
68end
[320]69
70
[450]71function out=convert_string(ss)
72info=whos('ss');
[320]73switch info.class
74    case 'struct'
[471]75        out=[];%default
[450]76        names = fieldnames(ss);
[320]77        for k=1:length(names)
[450]78            out.(names{k})=convert_string(ss.(names{k}));
[320]79        end
[663]80    case 'char'
[675]81        % try to convert to number if the char does not correspond to a function (otherwise str2num calls this function as it uses 'eval')
[772]82        if exist(ss,'builtin')||exist(ss,'file')% ss corresponds to the name of a builtin Matlab function or a file
83            out=ss; %reproduce the input string
[675]84        else
[772]85            out=str2num(ss);% convert to number or vector (str2num applied to a fct name executes this fct by 'eval', thus this possibility had to be ruled out above
86            if isempty(out)
87                sep_ind=regexp(ss,'\s&\s');% check for separator ' & ' which indicates column separation in tables
88                if ~isempty(sep_ind)
89                    sep_ind=[-2 sep_ind length(ss)+1];
90                    out={};
91                    for icolumn=1:length(sep_ind)-1
92                        out{1,icolumn}=ss(sep_ind(icolumn)+3:sep_ind(icolumn+1)-1);% get info between separators as a cell array
93                    end
94                else
95                    out=ss; %reproduce the input string
[450]96                end
97            end
[320]98        end
[379]99    case 'cell'
[697]100        out={};%default
[477]101        check_numeric=zeros(size(ss));
102        for ilist=1:numel(ss)
[663]103            if ~strcmp(ss{ilist},'image') && ~isempty(str2num(ss{ilist}))
[477]104                out{ilist,1}=str2num(ss{ilist});
105                check_numeric(ilist)=1;
106            else
[472]107                sep_ind=regexp(ss{ilist},'\s&\s');% check for separator ' & ' which indicates column separation in tables
108                if ~isempty(sep_ind)
109                    sep_ind=[-2 sep_ind length(ss{ilist})+1];
110                    for icolumn=1:length(sep_ind)-1
111                        out{ilist,icolumn}=ss{ilist}(sep_ind(icolumn)+3:sep_ind(icolumn+1)-1);
112                    end
113                else
114                    out{ilist,1}=ss{ilist}; %reproduce the input string
115                end
[453]116            end
[379]117        end
[477]118        if isequal(check_numeric,ones(size(ss)))
119            out=cell2mat(out);
120        end
[320]121    otherwise
[450]122        out=ss;
[320]123end
124
[809]125   
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