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mdiener21/calc_merge_stats.sh

Created January 31, 2021 19:23
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  1. mdiener21 created this gist Jan 31, 2021.
    29 changes: 29 additions & 0 deletions calc_merge_stats.sh
    View file
    Original file line number Diff line number Diff line change
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    #!/bin/bash -e
    set -o pipefail

    # Any arguments are incorrect. Note that git intercepts --help and tries to
    # open the man page.
    if [ $# -gt 0 ]; then
    echo 'Usage: git merge-stats'
    exit 1
    fi

    echo "% of Total Merges Author # of Merges % of Commits"
    # Use --first-parent to only count merges into the current branch; this gets
    # rid of commits where you merge upstream into your feature branch.
    mergeCounts=`git log --first-parent --merges --pretty='format:%an' | sort | uniq -c | sort -nr`
    totalMerges=`git log --first-parent --merges --oneline | wc -l`

    if [ $totalMerges -eq 0 ]; then
    echo 'No merges found.'
    exit 0
    fi

    while read -r line; do
    authorMerges=`awk '{print $1}' <<< "$line"`
    author=`sed "s/$authorMerges //" <<< "$line"`
    authorCommits=`git log --oneline --author="$author" | wc -l`
    totalPercentage=`echo "scale=2; (100*$authorMerges) / $totalMerges" | bc`
    authorPercentage=`echo "scale=2; (100*$authorMerges) / $authorCommits" | bc`
    printf "%17.2f %20s %12i %13.2f\n" "$totalPercentage" "$author" "$authorMerges" "$authorPercentage"
    done <<< "$mergeCounts"