gistfile1.txt

import os
import json
import subprocess
import sys

def relativize(path):
    return os.path.relpath(os.path.abspath(path), os.path.abspath('.'))[:-3]

DEPS_MEMO = {}

def get_deps(module):
    if module in DEPS_MEMO:
        return DEPS_MEMO[module]
    deps = subprocess.check_output(['browserify', '--deps', module])
    dep_map = json.loads(deps)
    rv = (relativize(dep['id']) for dep in dep_map)
    DEPS_MEMO[module] = rv
    return rv

def package(modules, bundle, excludes):
    modules_in_bundle = set()
    cmd = ['browserify']
    for exclude in excludes:
        cmd.append('-x')
        cmd.append(exclude)
    for module in modules:
        modules_in_bundle.update(get_deps(module))
        cmd.append(module)
    packaged = subprocess.check_output(cmd)
    with open(bundle, 'w') as f:
        f.write(packaged)
    return modules_in_bundle - excludes

def package_all(descriptions):
    bundled_deps = set()
    load_map = {} # map module id -> required bundles

    for bundle, modules in descriptions:
        modules_in_bundle = package(modules, bundle, bundled_deps)
        for module in modules_in_bundle:
            required_bundles = set([bundle])
            deps = list(get_deps(module))
            for dep in deps[1:]:
                if dep in load_map:
                    required_bundles.update(load_map[dep])
            load_map[module] = list(required_bundles)
        bundled_deps.update(modules_in_bundle)

    return load_map

def parse_args(argv):
    for arg in argv:
        bundle, module_string = arg.split(':', 1)
        modules = module_string.split(',')
        yield bundle, modules

if __name__ == '__main__':
    print json.dumps(package_all(list(parse_args(sys.argv[1:]))))