#!/usr/bin/env python

# Undump a dump from dumprevlog

# $ hg init

# $ undumprevlog < repo.dump

from __future__ import absolute_import, print_function

import sys

from mercurial import (

    node,

    revlog,

    transaction,

    vfs as vfsmod,

)

from mercurial.utils import (

    procutil,

)

for fp in (sys.stdin, sys.stdout, sys.stderr):

    procutil.setbinary(fp)

opener = vfsmod.vfs('.', False)

tr = transaction.transaction(sys.stderr.write, opener, {'store': opener},

                             "undump.journal")

while True:

    l = sys.stdin.readline()

    if not l:

        break

    if l.startswith("file:"):

        f = l[6:-1]

        r = revlog.revlog(opener, f)

        print(f)

    elif l.startswith("node:"):

        n = node.bin(l[6:-1])

    elif l.startswith("linkrev:"):

        lr = int(l[9:-1])

    elif l.startswith("parents:"):

        p = l[9:-1].split()

        p1 = node.bin(p[0])

        p2 = node.bin(p[1])

    elif l.startswith("length:"):

        length = int(l[8:-1])

        sys.stdin.readline() # start marker

        d = sys.stdin.read(length)

        sys.stdin.readline() # end marker

        r.addrevision(d, tr, lr, p1, p2)

tr.close()