#!/usr/bin/env python3

# Dump revlogs as raw data stream

# $ find .hg/store/ -name "*.i" | xargs dumprevlog > repo.dump

import sys

from mercurial.node import hex

from mercurial import (

    encoding,

    pycompat,

    revlog,

)

from mercurial.utils import procutil

from mercurial.revlogutils import (

    constants as revlog_constants,

)

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

    procutil.setbinary(fp)

def binopen(path, mode=b'rb'):

    if b'b' not in mode:

        mode = mode + b'b'

    return open(path, pycompat.sysstr(mode))

binopen.options = {}

def printb(data, end=b'\n'):

    sys.stdout.flush()

    procutil.stdout.write(data + end)

for f in sys.argv[1:]:

    localf = encoding.strtolocal(f)

    if not localf.endswith(b'.i'):

        print("file:", f, file=sys.stderr)

        print("  invalid filename", file=sys.stderr)

    r = revlog.revlog(

        binopen,

        target=(revlog_constants.KIND_OTHER, b'dump-revlog'),

        radix=localf[:-2],

    )

    print("file:", f)

    for i in r:

        n = r.node(i)

        p = r.parents(n)

        d = r.revision(n)

        printb(b"node: %s" % hex(n))

        printb(b"linkrev: %d" % r.linkrev(i))

        printb(b"parents: %s %s" % (hex(p[0]), hex(p[1])))

        printb(b"length: %d" % len(d))

        printb(b"-start-")

        printb(d)

        printb(b"-end-")