Simple bash functions to automate GitHub branches and pull requests

git-funcs.sh

#!/bin/bash

# Workflow: create branch -> create pull request
# git-create-branch-push "issue X"
# -> make changes, commit and push
# github-branch-pr "fix: issue solved" "closes #x"
# -> creates new PR with title and body
#
# Workflow: create branch for issue -> create pull request
# github-issue-branch-push 10
# -> creates branch with issue ID and title, make changes, commit and push
# github-branch-pr "fix: issue solved" "closes #x"
# -> creates new PR with title and body
#
# Workflow: create branch for an issue -> convert issue to pull request
# github-issue-branch-push 10
# -> creates branch with issue ID and title, make changes, commit and push
# github-issue-pr 10
# -> converts issue to PR

# normalize title for branch name
# thanks to https://github.com/Protolane/git-branch-name-normalizer
function git-normalize-branch-name() {
[ -z "$1" ] && {
    echo "Usage: $0 <some issue title>"
    return
  }
  echo "$1" | tr -d "'\`" \
    | sed -E 's#[\. \"\*\#\!\$\?~\^:\\]#-#g' \
    | sed -E 's#-+#-#g' \
    | sed -E 's#^[-/]##' \
    | sed -E 's#[-/](.lock)?$##'
}

# create a branch, check it out and push it to 'origin'
function git-create-branch-push() {
  [ -z "$1" ] && return
  
  git branch $name
  git checkout $name
  git push --set-upstream origin $name
}

# create a branch for the given issue ID
function github-issue-branch-push() {
  [ -z "$1" ] && return
  id="$1"
  
  issue=$(hub issue show $id |head -n1)
  if [ $? -ne 0 -o -z "$issue" ]; then
    echo "Issue $id not found"
  elif [ -n "$(echo "$issue" | grep "CLOSED")" ]; then
    echo "Issue $id is closed"
  else
    name="$id-$(git-normalize-branch-name "$issue")"
    git-create-branch-push "$name"
  fi
}

# create a github pull request for the current brand with the given title and optional body
function github-branch-pr() {
  [ -z "$1" ] && return
  title="$1"
  message=""
  if [ -n "$2" ]; then
    message="--message \"$2\""
  fi
  
  hub pull-request --message "$title" $message
}

# convert an issue to a pull request
function github-issue-pr() {
  [ -z "$1" ] && return
  id="$1"
  
  issue=$(hub issue show $id |head -n1)
  if [ $? -ne 0 ]; then
    echo "Issue $id not found"
  else
    hub pull-request -i $id
  fi
}