create pull request on master

create-pull-request.sh

#!/bin/bash

function errorMessage {
    printf '%s\n' "Error: $1" >&2
}

function message {
	printf '%s\n' "$1"
}

BASE='master'

#Check if hub is installed
if ! hub version > /dev/null ; then
	errorMessage 'hub not found'
	message "Installing hub using homebrew"
	# Try to install hub using brew
	if ! brew install hub; then
		errorMessage 'homebrew not found, unable to install hub'
		exit 1
	fi
fi

#Pushing HEAD to origin
message "Pushing to origin:"
if ! git push origin HEAD ; then
	exit 1
fi

FIRST_COMMIT=$(git rev-list --max-count=1 upstream/$BASE);




#Generate temporary file for pr message
PR_FILES='/tmp/PR_FILES.md'

#Delete file content
> $PR_FILES

#If we have only one commit, write it as PR title
COMMIT_MSG=$(git --no-pager log --format=%B $FIRST_COMMIT..HEAD | egrep "^[^\s]+")
if [ $(echo $COMMIT_MSG | wc -l | tr -d '[[:space:]]') -eq 1 ]; then
	echo $COMMIT_MSG >> $PR_FILES
fi

echo 'ID:'$(git rev-parse --abbrev-ref HEAD | egrep -o "\d+") >> $PR_FILES
echo '# Write a message for this pull request. The first block of text is the title and the rest is the description.' >> $PR_FILES
echo "# Changes: " >> $PR_FILES
git --no-pager log $FIRST_COMMIT..HEAD | sed -e "s~^~#    ~g" >> $PR_FILES

#Launch editor in order to write PR title's
EDITOR=$(git config --get core.editor || echo "vi")
$EDITOR "$PR_FILES"

#Remove comments on pr message
sed -i -e "/^#.*$/d" "$PR_FILES"
#Check if title and ticket Id are in message (at least 2 lines)
if [ $(cat $PR_FILES | wc -l | tr -d '[[:space:]]') -lt 2 ]; then
	errorMessage 'missing pull request title'
	exit 1
fi

#Create pull request on base
message "Creating pull request: "
hub pull-request -F $PR_FILES -b $BASE