Print or browse a git repository's URL.

gh-open.sh

#!/usr/bin/env bash
# Print or browse a git repository's URL.
# @ffflorian, 2016
# MIT License

set -e

SCRIPT_NAME="${0##*/}"

_print_usage() {
cat <<EOF
Usage: ${SCRIPT_NAME} [-h] [switch] [folder]

Commands:
 --help (-h)        Show help text

Switches:
 --print-only (-p)  Just print the URL instead of opening a browser

Example: ${SCRIPT_NAME} -p git_project/
EOF
}

while (( ${#} )); do
    case "${1}" in
        -h|--help )
            _print_usage
            exit 0
            ;;
        -p|--print-only )
            PRINT_ONLY="print_only"
            shift 1
            ;;
        "" )
            break
            ;;
        -* )
            echo "Unknown command '${1}'!"
            _print_usage
            exit 1
            ;;
        * )
            CD_FOLDER="${1}"
            break
            ;;
    esac
done

_command_exist() {
    command -v "${1}" > /dev/null
}

_init() {
    if [ ! -z "${CD_FOLDER}" ]; then
        cd "${CD_FOLDER}" || exit 1
    fi

    _get_web_url

    if [ "${PRINT_ONLY}" == "print_only" ]; then
        echo "${WEB_URL}"
    else
        _open_browser "${WEB_URL}"
    fi
}

_get_git_url() {
    if (_command_exist "git"); then
        GIT_URL="$(git config --get remote.origin.url)"
    else
        if [ -r ".git/config" ]; then
            GIT_URL="$(sed -nr 's/.*url = (.*)/\1/gpi' '.git/config')"
        fi
    fi

    if [ -z "${GIT_URL}" ]; then
        echo "Could not read URL from git! Are you in a git directory or did you specify one?"
        exit 1
    fi
}

_parse_git_branch() {
    if (_command_exist "git"); then
        GIT_BRANCH=$(git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/')
    else
        if [ -r ".git/HEAD" ]; then
            GIT_BRANCH="$(sed -nr 's/ref: refs\/heads\/(.*)$/\1/gpi' '.git/HEAD')"
        fi
    fi

    if [ -z "${GIT_BRANCH}" ]; then
        echo "Could not read branch from git."
    fi
}

_get_web_url() {
    _get_git_url
    _parse_git_branch

    if (grep -qE "^https?://" <<< "${GIT_URL}"); then
        WEB_URL="${GIT_URL}"
    elif (grep -qE "[^@]+@" <<< "${GIT_URL}"); then
        WEB_URL="$(sed -nr 's/[^@]+@([^\.]+\.[^:]+):(.*)\.git/http:\/\/\1\/\2/pi' <<< "${GIT_URL}")"
    else
        printf "Could not parse URL from git!\\nURL was: '%s'.\\n" "${GIT_URL}"
        exit 1
    fi
    WEB_URL="${WEB_URL}/tree/${GIT_BRANCH}"
}

_open_browser() {
    if (_command_exist "xdg-open"); then
        xdg-open "${1}"
    elif (_command_exist "x-www-browser"); then
        x-www-browser "${1}"
    else
        printf "Could not open the URL automatically. You might copy and paste it into your browser:\\n   %s\\n" "${1}"
    fi
}

_init