svn-list-committers

#!/bin/bash

# Display all the usernames of SVN committers of a path, sorted by number of
# commits.

revision=
limit=
use_merge_history=true

while getopts :r:l:G OPT; do
    case $OPT in
        r)
            revision="$OPTARG"
            ;;
        l)
            limit="$OPTARG"
            ;;
        G)
            use_merge_history=false
            ;;
        *)
            echo "usage: ${0##*/} [<options>] [--] [<path to check>]"
            echo
            echo "Options:"
            echo " -G               don't use merge history"
            echo " -l ARG           max number of commits to display"
            echo " -r ARG1:ARG2     revision range (from ARG1 to ARG2)"
            exit 2
    esac
done
shift $(( OPTIND - 1 ))
OPTIND=1

set -eu
set -o pipefail

path_to_check=${1:-.}

opts=(-q)
$use_merge_history  &&  opts+=(--use-merge-history)
[[ -n $revision ]]  &&  opts+=(--revision $revision)
[[ -n $limit    ]]  &&  opts+=(--limit $limit)

# svn log -q gives us output like:
# ------------------------------------------------------------------------
# r22629 | matyas | 2016-03-09 11:12:40 -0600 (Wed, 09 Mar 2016)
# ------------------------------------------------------------------------

# Filter out the lines with data on them, then get the usernames.
# Get a count of each unique username, and sort again, numerically (-n),
# reversed (-r).

svn log "${opts[@]}" "$path_to_check" |
    fgrep ' | ' |
    awk -F' \\| ' '{print $2}' |
    sort |
    uniq -c |
    sort -nr