killOrphanFiles()

Search all unreachable code files, from one or more Main Entry files, and delete them.

Search all unreachable code files, from a Main Entry file (or multiple entry files), and delete them.

Do you happen to have a large Matlab project with few entry points (MAIN1,MAIN2,..) ? Then there is a chance that a lot of scripts within your root are not needed by none of those entry points. This tool helps you clean up your code before releasing it.

Note: Dependencies in this script are very conservative by design: A calls B if the string "B" is mentioned anywhere in A with the following conditions:

1) once all spaces are removed the last character before 'name' is ' ' or '='

2) once all spaces are removed the first character after 'name' is '( '

More specifically

functioName1/scriptName1 is considered Reachable from MAIN.m if the string functioName1/scriptName1 appears in MAIN.m and obeys the 2 reules above.

This is extended recursively to all depth of "calls" (AdjacencyMatrix is propagated into TransitiveClosure). At that point in the 1st row all the reachable files from main Nr 1 are flagged.

KILLORPHANFILES() starts-up a number of user dialogues consisting of these steps

- select MAIN file

- select ROOT folder

- LIST all MAIN-unreachable files in ROOT

- SELECT which ones / CONFIRM deletion

% SEARCH METHOD:

% - A list of all filenames within root is created,

% with MAIN1,MAIN2,.. in position 1,2,...

% - Make dependency table:

% A(i,j) = "name(j) appears in file(i)" (even within a comment)

% this way also commented code is protected (desired)

% - Propagate dependency (transitive closure of adjacency matrix A)

% If i mentions(needs) j and j mentions k then i needs k:

% i --> j --> k ==> i --> k

% A(i,j)==1

% A(j,k)==1 ==> A(i,k) = 1

% - A(1,:) contains all nodes called by MAIN1 within selected ROOT folder.

% - A(2,:) contains all nodes called by MAIN2 within selected ROOT folder.

% - Intersection of {~A(1,:),~A(2,:)} is the unreachable set

% by the union of MAIN1,MAIN2. Meaning both MAIN1,MAIN2 will run after

% clean up is completed