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code-quantity.sh

#!/bin/bash

#
#   The MIT License (MIT)
#   Copyright (c) 2013 mironal
#
#   Permission is hereby granted,  free of charge,  to any person obtaining
#   a copy of this software and associated documentation files (the
#   "Software"),  to deal in the Software without restriction,  including
#   without limitation the rights to use,  copy,  modify,  merge,  publish,
#   distribute,  sublicense,  and/or sell copies of the Software,  and to
#   permit persons to whom the Software is furnished to do so,  subject to
#   the following conditions:
#
#   The above copyright notice and this permission notice shall be
#   included in all copies or substantial portions of the Software.
#
#   THE SOFTWARE IS PROVIDED "AS IS",  WITHOUT WARRANTY OF ANY KIND,
#   EXPRESS OR IMPLIED,  INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
#   MERCHANTABILITY,  FITNESS FOR A PARTICULAR PURPOSE AND
#   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
#   LIABLE FOR ANY CLAIM,  DAMAGES OR OTHER LIABILITY,  WHETHER IN AN ACTION
#   OF CONTRACT,  TORT OR OTHERWISE,  ARISING FROM,  OUT OF OR IN CONNECTION
#   WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#


# .hと.mに限って誰が何行書いたかを計測するｱﾚヽ(•̀ω•́ )ゝ✧

TMP_GIT_BLAME_FILE=/tmp/code-lines.tmpfile
TMP_USERLIST_FILE=/tmp/code-lines-userlist.tmpfile

trap 'rm -f "$TMP_GIT_BLAME_FILE" && rm -f "$TMP_USERLIST_FILE" && exit 1' 1 2 3 15

# ユーザ一覧
git log --pretty=format:"%an" | sort | uniq > "$TMP_USERLIST_FILE"

# 最も長いユーザ名の長さ + 1を作る
NAME_SPACE_LENGTH=`awk '{ if (length($0) > max) max = length($0) }
END { print (max + 1) }' "$TMP_USERLIST_FILE"`

# 計測対象のファイル数を表示
echo "`git ls-files "$1" | wc -l | sed -e 's/[^0-9]//g'` files found."
echo

# blame (^^ゞ
# egrep のところで拡張子を指定しているので注意!!
git ls-files "$1" | egrep "\.[hm]$" | xargs -n1 git --no-pager blame --line-porcelain -f -w | grep "^author " > "$TMP_GIT_BLAME_FILE"

# ユーザ毎に表示
while read USER_NAME; do

    NUM_OF_LINES=`cat "$TMP_GIT_BLAME_FILE" | grep "${USER_NAME}" | wc -l | sed -e 's/[^0-9]//g'`
    printf "%-${NAME_SPACE_LENGTH}s\t%-10s\n" "$USER_NAME" "$NUM_OF_LINES"

done < $TMP_USERLIST_FILE

rm -f $TMP_GIT_BLAME_FILE
rm -f $TMP_USERLIST_FILE