view contrib/dumprevlog @ 45883:f67741e8264b

templates: define a {onelinesummary} keyword

It is sometimes useful to be able to use the configured
`command-template.oneline-summary` in higher-level templates. For
example, I would like to use it in an internal template that lists
commits in a "review unit" (kind of a pull request). This patch adds
support for that.

We may want to define a way of formatting a context using a
command-specific override (from
`command-templates.oneline-summary.<command>`), but that will have to
be a template function instead. I don't plan to do that, but I'm
mentioning it now in case reviewers would prefer that we use a no-arg
function (i.e. `{onelinesummary()}`) already today to prepare for
that.

Differential Revision: https://phab.mercurial-scm.org/D9314

#!/usr/bin/env python3
# Dump revlogs as raw data stream
# $ find .hg/store/ -name "*.i" | xargs dumprevlog > repo.dump

from __future__ import absolute_import, print_function

import sys
from mercurial import (
    encoding,
    node,
    pycompat,
    revlog,
)
from mercurial.utils import procutil

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:]:
    r = revlog.revlog(binopen, encoding.strtolocal(f))
    print("file:", f)
    for i in r:
        n = r.node(i)
        p = r.parents(n)
        d = r.revision(n)
        printb(b"node: %s" % node.hex(n))
        printb(b"linkrev: %d" % r.linkrev(i))
        printb(b"parents: %s %s" % (node.hex(p[0]), node.hex(p[1])))
        printb(b"length: %d" % len(d))
        printb(b"-start-")
        printb(d)
        printb(b"-end-")