packer.py 文件源码

def update_project_file(pname):
    "detects if a box exists for project, updates project file"
    updates = [
        ('%s.vagrant.box' % pname, box_name(pname)),
        ('%s.vagrant.box-url' % pname, box_metadata_url(pname))
    ]
    if pname == 'basebox':
        # special handling when updating the basebox
        # leave the actual basebox project's box and box_url settings as-is
        updates = [
            ('defaults.vagrant.box', box_name(pname)),
            ('defaults.vagrant.box-url', box_metadata_url(pname))
        ]

    project_file = 'asdf'

    project_data = core_utils.ordered_load(open(project_file, 'r'))
    for path, new_val in updates:
        project_data = project.update_project_file(path, new_val, project_data)
    project.write_project_file(project_data)
    print 'wrote', project_file
    return project_data