How can I output my answer automatically with different sub-folders?

Let say, now, I need to read AndroidManifest.xml, and I have n folders to undergo, namely M1, M2, M3... Mn. Is there a way to make it examine automatically? So my output will contain a feature vector from different folders.

Below is my sample code:

text1 = fileread('C:\Users\ASUS\Desktop\FYP\ *M1*\AndroidManifest.xml'); % read input manifest file
text2 = regexp(fileread('Dataset1_Permission.txt'), '\r?\n', 'split'); % read android permission list dataset
matchStr = regexp(text1,'\"android.permission.\w*\"','match'); %extract the keyword in manifest file

features1 = ~cellfun(@isempty,regexp(text1,text2));
disp(matchStr);

[KSSV]

What is the problem now with your code? You have not mentioned it.

[ai ping Ng]

As stated above, I can't figure out how to output my answer when I have more than 1 folder to examine. Now it's fine since I only examine M1 folder only, but instead of manually changing my directory to M2, M3, and so on... is there a way to read it automatically by using Matlab?

Answer 1

[Rik]

Have you tried a loop the filename formed with sprintf?

for folder_number=1:5
    text1 = fileread(sprintf('C:\Users\ASUS\Desktop\FYP\M%d\AndroidManifest.xml',folder_number)); % read input manifest file
    text2 = regexp(fileread('Dataset1_Permission.txt'), '\r?\n', 'split'); % read android permission list dataset
    matchStr = regexp(text1,'\"android.permission.\w*\"','match'); %extract the keyword in manifest file
    features{folder_number} = ~cellfun(@isempty,regexp(text1,text2));
    disp(matchStr);
end

I don't know what you would want to do with matchStr. (Note: if you have many folders, pre-allocating the features variable may be a good idea)

[ai ping Ng]

Yes,tried. sprintf doesn't work in here.

Warning: Control Character '\U' is not valid. See 'doc sprintf' for control characters valid in the format string.

[Walter Roberson]

Use / instead of \ in the string. Windows actually uses / internally but permits either in file names.

[ai ping Ng]

Ok. Thank you. It works.

[ai ping Ng]

How to make my output show as row by row? Mean that in current state it is column by column,

ans =

    [1x137 logical]    [1x137 logical]    [1x137 logical]

but what I think is M1 will output as the first row, M2 output as the second row..and so on.. I have tried to turn around with cellfun function but it still doesn't work.

[Rik]

You mean something like

%answer = [1x137 logical]    [1x137 logical]    [1x137 logical]
for item=1:length(answer)
    answer{item}=answer{item}';
end
answer = cell2mat(answer);

(just an off the cuff answer, plus I'm tired, so no guarantees)

[Guillaume]

Note: the reason for the Warning: Control Character '\U' is not valid is because the '\' used as path separator here has special meaning in sprintf. It introduces control characters. If you want the '\' to be interpreted as such, you need to escape it by doubling it.

sprintf('C:\\Users\\ASUS\\Desktop\\FYP\\M%d\\AndroidManifest.xml')

would have worked. But as Rik said, Windows doesn't mind '/' as a path separator, so you may use that as well.

Answer 2

[Walter Roberson]

https://www.mathworks.com/matlabcentral/answers/57446-faq-how-can-i-process-a-sequence-of-files