convert/gnuarch: parse continuation-of revisions in gnuarch source In GNU Arch, continuation-of was often used for: - tagging revisions - continue working on a project in a new archive, because arch was scaling poorly in revision numbers (cat-logs were slow to be parsed and scanned through) - very similar to the previous point, fork his own branch of a project. Parsing this header information will allow to 'follow' new history because it often hints at older/forked/personal revision trees. This patch however just implements the parsing of the continuation-of header. A followup patch will implement the proper use of this new information.

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#!/usr/bin/env python

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__doc__ = """Same as `echo a >> b`, but ensures a changed mtime of b.

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Without this svn will not detect workspace changes."""

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import sys, os

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text = sys.argv[1]

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fname = sys.argv[2]

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f = open(fname, "ab")

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try:

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    before = os.fstat(f.fileno()).st_mtime

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    f.write(text)

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    f.write("\n")

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finally:

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    f.close()

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inc = 1

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now = os.stat(fname).st_mtime

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while now == before:

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    t = now + inc

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    inc += 1

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    os.utime(fname, (t, t))

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    now = os.stat(fname).st_mtime

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