Mercurial > hg > mercurial-crew-with-dirclash
view contrib/darcs2hg.py @ 2416:04736f38d74f
make description of -n option better.
author | Vadim Gelfer <vadim.gelfer@gmail.com> |
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date | Fri, 09 Jun 2006 09:09:17 -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