git-open.sh

#!/bin/sh

usage() {
  echo "Usage: $0 [user name] [repo name]"
  echo "Note: user name will default to \$GITHUB_USER or your \`git config --get github.user\` entry."
}

# creates variables into parent scope:
# baseurl="https://github.com";username="jeffreyiacono";repo="git-open"
parse_url() {
  local url="$1" project host proto path

  project=${url##**/}

  host=${url#git@}
  host=${host#ssh:\/\/git@}
  host=${host#http://}
  host=${host#https://}
  proto=${url%$host}
  host=${host%%[:/]*}

  path=${url#$proto$host[:/]}
  path=${path%/$project}

  project=${project%.git}

  # update globals
  baseurl="https://$host"
  username="$path"
  repo="$project"
}

#parse_url git@github.com:glensc/git-open.git
#parse_url https://github.com/jeffreyiacono/git-open
#parse_url git@gitlab.com:gitlab-org/examples/mvn-example.git

git_repo=$(git rev-parse --git-dir 2>/dev/null)

if [ $# = 0 ]; then
  if [ -z "$git_repo" ]; then
    echo "Error: must pass repo name or run from a git repo to open"
    usage
    exit 1
  fi
elif [ "$1" = "-h" ]; then
  usage
  exit 0
elif [ "$1" = "-v" ]; then
  echo "version 1.3"
  exit 0
fi

if [ -z "$git_repo" ]; then
  baseurl=${GITHUB_URL:-"https://github.com"}
else
  # baseurl="https://github.com";username="jeffreyiacono";repo="git-open"
  parse_url "$(git config remote.origin.url)"
fi

if [ $# = 1 ]; then
  username=${GITHUB_USER:-$(git config --get github.user)}
  repo=$1
elif [ $# = 2 ]; then
  username=$1
  repo=$2
fi

if [ -n "${DEBUG:-}" ]; then
  echo $baseurl/$username/$repo
else
  open $baseurl/$username/$repo
fi