How to use the pydoctor.driver.main function in pydoctor

def templatefile(filename):

            if filename in ["summary.html", "index.html", "common.html"]:
                twistedPythonDir = FilePath(__file__).parent()
                templatesDir = twistedPythonDir.child("_pydoctortemplates")
                return templatesDir.child(filename).path
            else:
                return originalTemplatefile(filename)

        monkeyPatch = MonkeyPatcher((util, "templatefile", templatefile))
        monkeyPatch.patch()

        from pydoctor.driver import main

        main(
            ["--project-name", projectName,
             "--project-url", projectURL,
             "--system-class", "twisted.python._pydoctor.TwistedSystem",
             "--project-base-dir", packagePath.parent().path,
             "--html-viewsource-base", sourceURL,
             "--add-package", packagePath.path,
             "--html-output", outputPath.path,
             "--html-write-function-pages", "--quiet", "--make-html",
            ] + intersphinxes)

        monkeyPatch.restore()

def build_api():
    """build API documentation."""
    docs.state_is_api = True
    from pydoctor.driver import main
    argv = [
        '--html-output=%s/apidocs' % builddir, '--project-name=fixture', 
        '--docformat=restructuredtext',
        '--project-url=http://code.google.com/p/fixture/', '--make-html', 
        '--add-package=fixture', '--verbose', '--verbose']
    
    sys.argv[0] = ['pydoctor'] # for sanity
    main(argv)

def templatefile(filename):

            if filename in ["summary.html", "index.html", "common.html"]:
                twistedPythonDir = FilePath(__file__).parent()
                templatesDir = twistedPythonDir.child("_pydoctortemplates")
                return templatesDir.child(filename).path
            else:
                return originalTemplatefile(filename)

        monkeyPatch = MonkeyPatcher((util, "templatefile", templatefile))
        monkeyPatch.patch()

        from pydoctor.driver import main

        main(
            ["--project-name", projectName,
             "--project-url", projectURL,
             "--system-class", "twisted.python._pydoctor.TwistedSystem",
             "--project-base-dir", packagePath.parent().path,
             "--html-viewsource-base", sourceURL,
             "--add-package", packagePath.path,
             "--html-output", outputPath.path,
             "--html-write-function-pages", "--quiet", "--make-html",
            ] + intersphinxes)

        monkeyPatch.restore()

on the web.

        @type sourceURL: C{str}
        @param sourceURL: The location (probably an HTTP URL) of the root of
            the source browser for the project.

        @type packagePath: L{FilePath}
        @param packagePath: The path to the top-level of the package named by
            C{projectName}.

        @type outputPath: L{FilePath}
        @param outputPath: An existing directory to which the generated API
            documentation will be written.
        """
        from pydoctor.driver import main
        main(
            ["--project-name", projectName,
             "--project-url", projectURL,
             "--system-class", "pydoctor.twistedmodel.TwistedSystem",
             "--project-base-dir", packagePath.parent().path,
             "--html-viewsource-base", sourceURL,
             "--add-package", packagePath.path,
             "--html-output", outputPath.path,
             "--html-write-function-pages", "--quiet", "--make-html"])

on the web.

        @type sourceURL: C{str}
        @param sourceURL: The location (probably an HTTP URL) of the root of
            the source browser for the project.

        @type packagePath: L{FilePath}
        @param packagePath: The path to the top-level of the package named by
            C{projectName}.

        @type outputPath: L{FilePath}
        @param outputPath: An existing directory to which the generated API
            documentation will be written.
        """
        from pydoctor.driver import main
        main(
            ["--project-name", projectName,
             "--project-url", projectURL,
             "--system-class", "pydoctor.twistedmodel.TwistedSystem",
             "--project-base-dir", packagePath.parent().path,
             "--html-viewsource-base", sourceURL,
             "--add-package", packagePath.path,
             "--html-output", outputPath.path,
             "--html-write-function-pages", "--quiet", "--make-html"])

monkeyPatch = MonkeyPatcher((util, "templatefile", templatefile))
        monkeyPatch.patch()

        from pydoctor.driver import main

        args = [u"--project-name", projectName,
                u"--project-url", projectURL,
                u"--system-class", u"twisted.python._pydoctor.TwistedSystem",
                u"--project-base-dir", packagePath.parent().path,
                u"--html-viewsource-base", sourceURL,
                u"--add-package", packagePath.path,
                u"--html-output", outputPath.path,
                u"--html-write-function-pages", u"--quiet", u"--make-html",
               ] + intersphinxes
        args = [arg.encode("utf-8") for arg in args]
        main(args)

        monkeyPatch.restore()