Directories in Scilab

Here’s the translation of the Go code to Scilab, formatted in Markdown suitable for Hugo:

Our program demonstrates working with directories in Scilab. Here’s the full source code:

function check(e)
    if e ~= 0 then
        error(lasterror());
    end
endfunction

// Create a new sub-directory in the current working directory
[status, msg] = mkdir('subdir');
check(status);

// Helper function to create a new empty file
function createEmptyFile(name)
    fd = mopen(name, 'w');
    mclose(fd);
endfunction

createEmptyFile('subdir/file1');

// Create a hierarchy of directories, including parents
[status, msg] = mkdir('subdir/parent/child');
check(status);

createEmptyFile('subdir/parent/file2');
createEmptyFile('subdir/parent/file3');
createEmptyFile('subdir/parent/child/file4');

// List directory contents
disp('Listing subdir/parent');
files = listfiles('subdir/parent');
for i = 1:size(files, '*')
    [path, fname, extension] = fileparts(files(i));
    isdir = isdir(files(i));
    disp(['  ', fname, extension, ' ', string(isdir)]);
end

// Change the current working directory
cd('subdir/parent/child');

// Now we'll see the contents of subdir/parent/child
disp('Listing subdir/parent/child');
files = listfiles('.');
for i = 1:size(files, '*')
    [path, fname, extension] = fileparts(files(i));
    isdir = isdir(files(i));
    disp(['  ', fname, extension, ' ', string(isdir)]);
end

// Change back to where we started
cd('../../..');

// Visit a directory recursively
disp('Visiting subdir');
function visit(path)
    files = listfiles(path);
    for i = 1:size(files, '*')
        disp(['  ', files(i), ' ', string(isdir(files(i)))]);
        if isdir(files(i)) then
            visit(files(i));
        end
    end
endfunction

visit('subdir');

// Clean up
rmdir('subdir', 's');

Let’s break down the key parts of this script:

We start by defining a check function to handle errors.
We use mkdir to create directories. Scilab doesn’t have a direct equivalent to MkdirAll, so we create the nested directories separately.
The createEmptyFile function creates an empty file using mopen and mclose.
We use listfiles to get the contents of a directory. This is similar to ReadDir in the original example.
cd is used to change the current working directory, just like in the original.
The visit function recursively visits all subdirectories. This is our equivalent of WalkDir.
Finally, we use rmdir with the ’s’ option to remove the entire directory tree we created.

To run this script, save it as directories.sce and execute it in Scilab:

--> exec('directories.sce', -1)
Listing subdir/parent
  child  TRUE
  file2  FALSE
  file3  FALSE
Listing subdir/parent/child
  file4  FALSE
Visiting subdir
  subdir TRUE
  subdir/file1 FALSE
  subdir/parent TRUE
  subdir/parent/child TRUE
  subdir/parent/child/file4 FALSE
  subdir/parent/file2 FALSE
  subdir/parent/file3 FALSE

This script demonstrates basic directory operations in Scilab, including creating directories, listing contents, changing the current directory, and recursively visiting a directory tree.

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