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Aug 4, 2024
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Use built-in 'matlab.net.base64decode' (introduced in R2016b) instead… #505

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Use built-in 'matlab.net.base64decode' (introduced in R2016b) instead… 
… of vendoring 'base64decode'
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@robertoffmoura
robertoffmoura committed Aug 4, 2024
commit db50b97c9ef69331c4a3cabc7be3552d28cb1ac0
198 changes: 102 additions & 96 deletions plotly/export_fig2/write_image.m
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Original file line number Diff line number Diff line change
@@ -1,111 +1,117 @@
function output = write_image(pfObj, imageFormat, filename, height, width, scale)
% Function to write plotly figures to a supported image format, which
% are the following: "png", "jpg", "jpeg", "webp", "svg", "pdf", "eps",
% "json".

debug=0;
if nargin < 2
imageFormat = "png";
filename = "figure.png";
height = pfObj.layout.height;
width = pfObj.layout.width;
scale = 1;
elseif nargin < 3
filename = "figure." + imageFormat;
height = pfObj.layout.height;
width = pfObj.layout.width;
scale = 1;
elseif nargin < 4
height = pfObj.layout.height;
width = pfObj.layout.width;
scale = 1;
elseif nargin < 5
width = pfObj.layout.width;
scale = 1;
elseif nargin < 6
scale = 1;
end

% Function to write plotly figures to a supported image format, which are the following: "png", "jpg", "jpeg", "webp", "svg", "pdf", "eps", "json"

debug=0;
if nargin < 2
imageFormat="png";
filename='figure.png';
height=pfObj.layout.height;
width=pfObj.layout.width;
scale=1;
elseif nargin < 3
filename=['figure.',char(imageFormat)];
height=pfObj.layout.height;
width=pfObj.layout.width;
scale=1;
elseif nargin < 4
height=pfObj.layout.height;
width=pfObj.layout.width;
scale=1;
elseif nargin < 5
width=pfObj.layout.width;
scale=1;
elseif nargin < 6
scale=1;
end

if strcmpi(imageFormat,'jpg')
imageFormat = "jpeg";
end

wd=fileparts(fileparts(mfilename('fullpath')));
output=[];

if ~isa(pfObj,'plotlyfig')
fprintf('\nError: Input is not a plotlyfig object.\n\n');
return
end

if isunix()
kExec = string(fullfile(wd,'kaleido','kaleido'));
cc="cat";
else
kExec = string(fullfile(wd,'kaleido','kaleido.cmd'));
cc="type";
end
plyJsLoc = string(fullfile(wd,'kaleido','plotly-latest.min.js'));
if strcmpi(imageFormat, "jpg")
imageFormat = "jpeg";
end

if ~isfile(kExec) || ~isfile(plyJsLoc)
status=getKaleido();
else
status=1;
end
wd = fileparts(fileparts(mfilename("fullpath")));
output = [];

if status == 0
return
end
if ~isa(pfObj, "plotlyfig")
fprintf("\nError: Input is not a plotlyfig object.\n\n");
return
end

mjLoc = replace(string(fullfile(wd,'kaleido','etc','mathjax','MathJax.js')),'\','/');
scope="plotly";
if isunix()
kExec = string(fullfile(wd,"kaleido", "kaleido"));
cc = "cat";
else
kExec = string(fullfile(wd,"kaleido", "kaleido.cmd"));
cc = "type";
end
plyJsLoc = string(fullfile(wd,"kaleido", "plotly-latest.min.js"));

if ~isfile(kExec) || ~isfile(plyJsLoc)
status = getKaleido();
else
status = 1;
end

% Prepare input plotly object for Kaleido
q=struct();
q.data.data = pfObj.data;
q.data.layout = pfObj.layout;
q.data.layout = rmfield(q.data.layout,'height');
q.data.layout = rmfield(q.data.layout,'width');
q.format = string(imageFormat);
q.height = height;
q.scale = scale;
q.width = width;
if status == 0
return
end

pfJson = native2unicode(jsonencode(q),'UTF-8');
tFile = string(fullfile(wd,'kaleido','temp.txt'));
f=fopen(tFile,'w');
fprintf(f,"%s",pfJson);
fclose(f);
mjLoc = replace(string(fullfile( ...
wd, "kaleido", "etc", "mathjax", "MathJax.js")), "\", "/");
scope="plotly";

% Prepare input plotly object for Kaleido
q = struct();
q.data.data = pfObj.data;
q.data.layout = pfObj.layout;
q.data.layout = rmfield(q.data.layout, "height");
q.data.layout = rmfield(q.data.layout, "width");
q.format = string(imageFormat);
q.height = height;
q.scale = scale;
q.width = width;

pfJson = native2unicode(jsonencode(q), "UTF-8");
tFile = string(fullfile(wd, "kaleido", "temp.txt"));
f = fopen(tFile, "w");
fprintf(f, "%s", pfJson);
fclose(f);

cmd=[cc," ",tFile," | ",kExec," ",scope," --plotlyjs='",plyJsLoc,"' ","--mathjax='file:///",mjLoc,"' --no-sandbox --disable-gpu --allow-file-access-from-files --disable-breakpad --disable-dev-shm-usage"];
cmd = [cc, " ", tFile, " | ", kExec, " ", scope, " --plotlyjs='", ...
plyJsLoc, "' ", "--mathjax='file:///",mjLoc,"' " ...
+ "--no-sandbox --disable-gpu " ...
+ "--allow-file-access-from-files --disable-breakpad " ...
+ "--disable-dev-shm-usage"];

if debug
inputCmd=char(join(cmd,''));
fprintf('\nDebug info:\n%s\n\n',inputCmd);
end
if debug
inputCmd = char(join(cmd, ""));
fprintf("\nDebug info:\n%s\n\n", inputCmd);
end

[code,out]=system(char(join(cmd,'')));
if debug
disp(out);
end
[code,out] = system(char(join(cmd, "")));
if debug
disp(out);
end

if code ~= 0
fprintf('\nFatal: Failed to run Kaleido.\n\n');
return;
else
a=string(split(out,newline));
if a(end)==""
a(end)=[];
if code ~= 0
fprintf("\nFatal: Failed to run Kaleido.\n\n");
return;
else
a = string(split(out,newline));
if a(end) == ""
a(end) = [];
end
output = jsondecode(a(end));
end
output = jsondecode(a(end));
end

if output.code ~= 0
fprintf('\nError: %s\n',output.message);
else
out=unicode2native(output.result,'UTF-8');
out=base64decode(out);
f=fopen(char(filename),'wb');
fwrite(f,out);
fclose(f);
if output.code ~= 0
fprintf("\nError: %s\n", output.message);
else
out = unicode2native(output.result, "UTF-8");
out = matlab.net.base64decode(out);
f = fopen(char(filename), "wb");
fwrite(f, out);
fclose(f);
end
end
117 changes: 0 additions & 117 deletions plotly/plotly_aux/base64decode.m
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