prepare-commit-msg

#!/bin/sh

branchName=`git rev-parse --abbrev-ref HEAD`
taskNumber=`echo $branchName | awk -F'-' '{print $4 "-" $5}'`
taskSubject=`echo $branchName | awk -F'-' '{print $6}' | sed 's/_/ /g'`
commitMessageFile=$1
commitMode=$2
messageInFile=`cat $commitMessageFile`

# $2 is the commit mode
# if $2 == 'commit'  => user used `git commit`
# if $2 == 'message' => user used `git commit -m '...'`

if [ "$commitMode" = "message" ]; then
  echo -n "[$taskNumber][$taskSubject] - " > $commitMessageFile
  echo $messageInFile >> $commitMessageFile
else
  firstLine=`head -n1 $commitMessageFile`

  # We check the fist line of the commit message file.
  # If it's an empty string then user didn't use `git commit --amend` so we can fill the commit msg file
  if [ -z "$firstLine" ]; then
    echo "[$taskNumber][$taskSubject] - " > $commitMessageFile
  fi
fi