Efficient way to rename files adding prefix from higher rank folder

% Assuming that the Subject_folder's are contained in D:\Your\Folder\ :
BasePath = 'D:\Your\Folder\';
BaseLen  = length(BasePath);
FileList = dir(fullfile(BasePath, '**\*.png'));
for k = 1:numel(FileList)
    Path    = FileList(k).folder;
    Name    = FileList(k).file;
    File    = fullfile(Path, Name);
    Subject = strtok(Path(BaseLen+1:end), '_');
    newFile = fullfile(Path, [Subject, '_', Name]);
    [status,msg] = movefile(File, newFile);
    if status ~= 1
        error(msg);
    end
end

By the way, if "many" means hundreds, such that 10'000 files are concerned, use the fasterhttps://www.mathworks.com/matlabcentral/fileexchange/29569-filerename instead of movefile.

1 个评论
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bugsterkafer 2021-3-24

Works great thanks Jan!

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Answer 2

Neuropragmatist 2019-9-4

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/478892-efficient-way-to-rename-files-adding-prefix-from-higher-rank-folder#answer_390394

You should look at fileparts:

https://uk.mathworks.com/help/matlab/ref/fileparts.html

And strsplit:

https://uk.mathworks.com/help/matlab/ref/strsplit.html?searchHighlight=delimiter&s_tid=doc_srchtitle

For example:

%% if these are your example filenames:
C:\file1\file2\file3\subject_folder\session_folder\figure_folder\xxx.png
C:\file1\file2\file3\subject_folder\session_folder\figure_folder\xxx.fig
%% fileparts:
>> [a,b,c] = fileparts('C:\file1\file2\file3\subject_folder\session_folder\figure_folder\xxx.png')
a =
    'C:\file1\file2\file3\subject_folder\session_folder\figure_folder'
b =
    'xxx'
c =
    '.png'
    
%% followed by strsplit:
>> filenames = strsplit(a,'\')
filenames =
  1×7 cell array
  Columns 1 through 6
    {'C:'}    {'file1'}    {'file2'}    {'file3'}    {'subject_folder'}    {'session_folder'}
  Column 7
    {'figure_folder'}