CODEWITHSUNDEEP
git
mynkow
mynkow

Reputation: 4558

GIT: Extract file modification data for analysis

I want to get a table or csv (and eventually visualize it) about every file in git repository and every date when files were changed.

Expected output: The number is how many commits contain that file per day Date1 file1 12 Date1 file2 4 Date2 file1 6

Probably I should go and iterate trough all the commits and get somehow the modified files from every commit. Would you help me please?

RESEARCH

PROGRESS:

for commit in $(git rev-list master) do # Get the author date git log -1 ${commit} --pretty="%ad" --date=short # get the files changes git diff --name-only ${commit}^! done | sort | uniq -c | sort -rn

Upvotes: 0

Views: 491

Answers (1)

Andrew C
Andrew C

Reputation: 14883

Dates in Git usually don't mean what people think or want them to be.

Each commit has 2 dates associated it - the author date, and the committer date. Both of those are taken from the computer clock of whomever made the commit, and they can both be overridden via the command line. As such, they are not particularly reliable indicators of anything.

The bigger issue though is that merely tells you the information that was recorded in the original repository in which the commit was made or authored. When you are talking about a DVCS that has implications. If I committed something last summer, and then today pushed it to a shared server you would see last summers date on the commit. Is that what you want? (I'm guessing "no") If not, then you need to have something set up via a receive hook on the server to log dates for you.

If you want to continue with your original path then I would suggest you do something along these lines. Start with this. It will dump "date file". You can then put that to anything you want to collate the results (awk, perl, python, etc.)

for commit in $(git rev-list master)
do
    # Get the author date
    commitDate=$(git log -1 ${commit} --pretty="%ad" --date=short)
    # get the files changes 
    git diff --name-only ${commit}^! | xargs -n1 -I {} echo ${commitDate} {}
done

Upvotes: 4

Related Questions