open_url.py

"""open_url: Open a URL in the system default web browser

Uses os.system instead of the webbrowser module to work around a
limitation in Sublime Merge.
"""

import os
import re
import sys

urlRegex = re.compile(
    # http:// or https://
    r"^https?://"
    # domain...
    r"(?:(?:[A-Z0-9](?:[A-Z0-9-]{0,61}[A-Z0-9])?\.)+(?:[A-Z]{2,6}\.?|[A-Z0-9-]{2,}\.?)|"
    # localhost...
    r"localhost|"
    # ...or ip
    r"\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})"
    # optional port
    r"(?::\d+)?"
    # end of URL
    r"(?:/?|[/?][^\"\s]+)$",
    re.IGNORECASE,
)


def OpenUrl(url):
    """Validate and (if successfully validated) open a URL

    Opens the URL in the user's default browser.
    """
    if urlRegex.match(url):
        if sys.platform.startswith("win"):
            utility = "explorer"
        else:
            utility = "open"

        os.system('{} "{}"'.format(utility, url))


if __name__ == "__main__":
    url = sys.argv[1]
    OpenUrl(url)