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## Copyright (C) 2013-2022 Alexander Barth
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 3 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program; If not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {} ncdisp (@var{filename})
## Display meta-data of the NetCDF file @var{filename}
##
## @subsubheading Example
## @example
## ncdisp("test.nc");
## @end example
## @seealso{ncinfo}
## @end deftypefn
function ncdisp (filename)
info = ncinfo(filename);
fprintf("Source:\n");
indent = repmat(" ",[1 11]);
fprintf("%s%s\n",indent,fullfile(filename));
fprintf("Format:\n");
fprintf("%s%s\n",indent,info.Format);
colors.var = "red";
colors.att = "cyan";
colors.dim = "blue";
group_color = "green";
printgroup("",info,colors);
endfunction
function s = fmtattr(val)
if ischar(val)
s = sprintf("""%s""",val);
else
s = num2str(val);
endif
endfunction
function s = fmtsize(sz)
s = sprintf("%gx",sz);
s = s(1:end-1);
endfunction
function printgroup(indent1,info,colors)
indent2 = [indent1 repmat(" ",[1 11])];
indent3 = [indent2 repmat(" ",[1 11])];
% attributes
if ~isempty(info.Attributes)
fprintf("%sGlobal Attributes:\n",indent1);
printattr(indent2,info.Attributes,colors);
endif
% dimensions
if ~isempty(info.Dimensions)
% length of the longest attribute name
dim = info.Dimensions;
maxlen = max(cellfun(@length,{dim.Name}));
fprintf("%sDimensions:\n",indent1);
for i = 1:length(dim)
space = repmat(" ",[maxlen-length(dim(i).Name) 1]);
fprintf("%s",indent2);
colormsg(sprintf("%s %s= %d",dim(i).Name,space,dim(i).Length),colors.dim);
fprintf("\n");
endfor
endif
% variables
if isfield(info,"Variables")
if ~isempty(info.Variables)
% length of the longest attribute name
vars = info.Variables;
fprintf("%sVariables:\n",indent1);
for i = 1:length(vars)
%fprintf("%s%s\n",indent2(1:end-7),vars(i).Name);
colormsg(sprintf("%s%s\n",indent2(1:end-7),vars(i).Name),colors.var);
if ~isempty(vars(i).Size)
sz = fmtsize(vars(i).Size);
dimname = sprintf("%s,",vars(i).Dimensions.Name);
dimname = dimname(1:end-1);
else
sz = "1x1";
dimname = "";
endif
fprintf("%sSize: %s\n",indent2,sz);
fprintf("%sDimensions: %s\n",indent2,dimname);
fprintf("%sDatatype: %s\n",indent2,vars(i).Datatype);
if ~isempty(vars(i).Attributes);
fprintf("%sAttributes:\n",indent2);
printattr(indent3,vars(i).Attributes,colors);
endif
endfor
endif
endif
% groups
if ~isempty(info.Groups)
% length of the longest attribute name
grps = info.Groups;
fprintf("%sGroups:\n",indent1);
for i = 1:length(grps)
fprintf("%s%s\n",indent2(1:end-7),grps(i).Name);
printgroup(indent2,grps(i),colors);
endfor
endif
endfunction
function printattr(indent,attr,colors)
% length of the longest attribute name
maxlen = max(cellfun(@length,{attr.Name}));
for i = 1:length(attr)
space = repmat(" ",[maxlen-length(attr(i).Name) 1]);
%fprintf("%s%s %s= %s\n",indent,attr(i).Name,space,fmtattr(attr(i).Value));
fprintf("%s",indent);
colormsg(sprintf("%s %s= %s\n",attr(i).Name,space,fmtattr(attr(i).Value)),colors.att);
endfor
endfunction
function colormsg (msg,color)
if strcmp(getenv("TERM"),"xterm")
esc = char(27);
% ANSI escape codes
colors.black = [esc, "[30m"];
colors.red = [esc, "[31m"];
colors.green = [esc, "[32m"];
colors.yellow = [esc, "[33m"];
colors.blue = [esc, "[34m"];
colors.magenta = [esc, "[35m"];
colors.cyan = [esc, "[36m"];
colors.white = [esc, "[37m"];
reset = [esc, "[0m"];
c = getfield(colors,color);
fprintf('%s',[c, msg, reset]);
else
fprintf('%s',msg);
endif
endfunction
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