Generate CSV file that lists all commits - since certain date - and lists all the branches each commit resides in

GitCommitsVsBranchesTable.sh

#!/bin/bash

# Script arguments:
# SINCE - Date (format: MMM DD YYYY, e.g. Nov 1 2016) for list all commit since until now
# branches - comma-seperated list of branches to be set as columns in the resulted table

# the path to the resulted CSV file
CSV_FILE=COMMITS_REPORT.csv

# list all commits since given argument
all_commits=`git rev-list --remotes --since="$SINCE"`

# Header table line
echo -e "Commit Description,Commit ID,Date,Committer,$branches" > $CSV_FILE

# for each commit loop
for commit in $all_commits
do
        # reset flag-per-commit whether to include it in the table
        commitflag=0
        
        # calculate commit related values: commit message, date and committer
        message=$(git show -s --pretty=format:"%s" $commit | tr '\n' ' ' | tr ',' ' ')
        date=$(git show -s --pretty=format:"%cd" $commit)
        committer=$(git show -s --pretty=format:"%cn" $commit | tr ',' ' ')
        
        # initialize commit line
        outline="$message,$commit,$date,$committer"
        
        # list all branches related to the commit
        commitbranches=`git branch -a --contains $commit`

        # loop all the required branches
        for branch in ${branches//,/ }
        do
                # reset flag indicating whether the commit is in the current checked branch
                inflag=0

                # loop all the branches which the commit resides in
                for commitbranch in $commitbranches
                do
                        # validate match
                        if [ "$commitbranch" == "remotes/origin/$branch" ]; then
                                inflag=1
                                commitflag=1
                        fi
                done
                # add branch match flag to commit line
                outline="$outline,$inflag"
        done
        if [ $commitflag -eq 1 ] ; then
                # add commit line to table
                echo -e "$outline" >> $CSV_FILE
        fi
done