Mercurial > hg > mercurial-crew-with-dirclash
view contrib/darcs2hg.py @ 2439:e8c4f3d3df8c
extend network protocol to stop clients from locking servers
now all repositories have capabilities slot, tuple with list of names.
if 'unbundle' capability present, repo supports push where client does
not need to lock server. repository classes that have unbundle capability
also have unbundle method.
implemented for ssh now, will be base for push over http.
unbundle protocol acts this way. server tells client what heads it
has during normal negotiate step. client starts unbundle by repeat
server's heads back to it. if server has new heads, abort immediately.
otherwise, transfer changes to server. once data transferred, server
locks and checks heads again. if heads same, changes can be added.
else someone else added heads, and server aborts.
if client wants to force server to add heads, sends special heads list of
'force'.
author | Vadim Gelfer <vadim.gelfer@gmail.com> |
---|---|
date | Thu, 15 Jun 2006 16:37:23 -0700 |
parents | 61909dfb316d |
children | 5ec2dded1bda |
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#!/usr/bin/env python # Encoding: iso-8859-1 # vim: tw=80 ts=4 sw=4 noet # ----------------------------------------------------------------------------- # Project : Basic Darcs to Mercurial conversion script # ----------------------------------------------------------------------------- # Author : Sebastien Pierre <sebastien@xprima.com> # Creation : 24-May-2006 # Last mod : 26-May-2006 # History : # 26-May-2006 - Updated # 24-May-2006 - First implementation # ----------------------------------------------------------------------------- import os, sys import tempfile import xml.dom.minidom as xml_dom from time import strptime, mktime DARCS_REPO = None HG_REPO = None USAGE = """\ %s DARCSREPO HGREPO Converts the given Darcs repository to a new Mercurial repository. The given HGREPO must not exist, as it will be created and filled up (this will avoid overwriting valuable data. """ % (os.path.basename(sys.argv[0])) # ------------------------------------------------------------------------------ # # Utilities # # ------------------------------------------------------------------------------ def cmd(text, path=None): """Executes a command, in the given directory (if any), and returns the command result as a string.""" cwd = None if path: path = os.path.abspath(path) cwd = os.getcwd() os.chdir(path) print text res = os.popen(text).read() if path: os.chdir(cwd) return res def writefile(path, data): """Writes the given data into the given file.""" f = file(path, "w") ; f.write(data) ; f.close() # ------------------------------------------------------------------------------ # # Darcs interface # # ------------------------------------------------------------------------------ def darcs_changes(darcsRepo): """Gets the changes list from the given darcs repository. This returns the chronological list of changes as (change name, change summary).""" changes = cmd("darcs changes --reverse --xml-output", darcsRepo) doc = xml_dom.parseString(changes) res = [] for patch_node in doc.childNodes[0].childNodes: name = filter(lambda n:n.nodeName == "name", patch_node.childNodes) comm = filter(lambda n:n.nodeName == "comment", patch_node.childNodes) if not name:continue else: name = name[0].childNodes[0].data if not comm: comm = "" else: comm = comm[0].childNodes[0].data author = patch_node.getAttribute("author") date = patch_node.getAttribute("date") yield author, date, name, comm def darcs_pull(hg_repo, darcs_repo, change): cmd("darcs pull '%s' --all --patches='%s'" % (darcs_repo, change), hg_repo) # ------------------------------------------------------------------------------ # # Mercurial interface # # ------------------------------------------------------------------------------ def hg_commit( hg_repo, text, author, date ): fd, tmpfile = tempfile.mkstemp(prefix="darcs2hg_") writefile(tmpfile, text) cmd("hg add -X _darcs", hg_repo) cmd("hg remove -X _darcs --after", hg_repo) cmd("hg commit -l %s -u '%s' -d '%s 0'" % (tmpfile, author, date), hg_repo) os.unlink(tmpfile) # ------------------------------------------------------------------------------ # # Main # # ------------------------------------------------------------------------------ if __name__ == "__main__": args = sys.argv[1:] # We parse the arguments if len(args) == 2: darcs_repo = os.path.abspath(args[0]) hg_repo = os.path.abspath(args[1]) else: print USAGE sys.exit(-1) # Initializes the target repo if not os.path.isdir(darcs_repo + "/_darcs"): print "No darcs directory found at: " + darc_repo sys.exit(-1) if not os.path.isdir(hg_repo): os.mkdir(hg_repo) else: print "Given HG repository must not exist. It will be created" sys.exit(-1) cmd("hg init '%s'" % (hg_repo)) cmd("darcs initialize", hg_repo) # Get the changes from the Darcs repository for author, date, summary, description in darcs_changes(darcs_repo): text = summary + "\n" + description darcs_pull(hg_repo, darcs_repo, summary) epoch = int(mktime(strptime(date, '%Y%m%d%H%M%S'))) hg_commit(hg_repo, text, author, epoch) # EOF