generate.py

import os
import re


class Entry:
    """
    filepath|hash|filesize|uname|gname|permissions|filetype|ctime|mtime|extended
    """
    def __init__(self, path, hash, size, filetype=2, uname='root', gname='root', permissions=0o644, ctime=None, mtime=None, extended=None):
        self._data = {
            'path': path,
            'hash': hash,
            'size': size,
            'uname': uname,
            'gname': gname,
            'permissions': permissions,
            'filetype': filetype,
            'ctime': ctime,
            'mtime': mtime,
            'extended': extended,
        }

    def __str__(self):
        return '{path}|{hash}|{size}|{uname}|{gname}|{permissions}|{filetype}|{ctime}|{mtime}|{extended}'.format(self._data**)


def generate(root):
    for root, dirs, files in os.walk(root):
        if not dirs and not files:
            # empty directory
            yield Entry(root, '', 0, 'root', 'root', 0o755, 4, 0, 0, 0)
        for name in files:
            path = os.path.join(root, name)
            cmd = 'brotli --input {} | ipfs add'.format(path)
            out = os.system(cmd)
            m = re.match('^added .+ (.+)$', out)
            if m is None:
                raise RuntimeError('invalid output from ipfs add: %s' % out)
            hash = m.group(1)
            yield Entry(path, hash, size, uname, gname, permisssions, filetype, ctime, mtime, extended)

if __name__ == '__main__':
    with open('plist', 'w') as f:
        for entry in generate('/root/to/tree'):
            f.write('%s\n' % entry)