Mercurial > hg

--- a/contrib/darcs2hg.py	Thu Aug 28 11:19:17 2008 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,255 +0,0 @@
-#!/usr/bin/env python
-# Encoding: iso-8859-1
-# vim: tw=80 ts=4 sw=4 noet
-# -----------------------------------------------------------------------------
-# Project   : Basic Darcs to Mercurial conversion script
-#
-# *** DEPRECATED. Use the convert extension instead. This script will
-# *** be removed soon.
-#
-# -----------------------------------------------------------------------------
-# Authors   : Sebastien Pierre                           <sebastien@xprima.com>
-#             TK Soh                                      <teekaysoh@gmail.com>
-# -----------------------------------------------------------------------------
-# Creation  : 24-May-2006
-# -----------------------------------------------------------------------------
-
-import os, sys
-import tempfile
-import xml.dom.minidom as xml_dom
-from time import strptime, mktime
-import re
-
-DARCS_REPO = None
-HG_REPO    = None
-
-USAGE = """\
-%s DARCSREPO HGREPO [SKIP]
-
-    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.
-
-    In case an error occurs within the process, you can resume the process by
-    giving the last successfuly applied change number.
-""" % (os.path.basename(sys.argv[0]))
-
-# ------------------------------------------------------------------------------
-#
-# Utilities
-#
-# ------------------------------------------------------------------------------
-
-def cmd(text, path=None, silent=False):
-	"""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)
-	if not silent: 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()
-
-def error( *args ):
-	sys.stderr.write("ERROR: ")
-	for a in args: sys.stderr.write(str(a))
-	sys.stderr.write("\n")
-	sys.stderr.write("You can make manual fixes if necessary and then resume by"
-	" giving the last changeset number")
-	sys.exit(-1)
-
-# ------------------------------------------------------------------------------
-#
-# 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)
-	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")
-		chash  = os.path.splitext(patch_node.getAttribute("hash"))[0]
-		yield author, date, name, chash, comm
-
-def darcs_tip(darcs_repo):
-	changes = cmd("darcs changes",darcs_repo,silent=True)
-	changes = filter(lambda l: l.strip().startswith("* "), changes.split("\n"))
-	return len(changes)
-
-def darcs_pull(hg_repo, darcs_repo, chash):
-	old_tip = darcs_tip(darcs_repo)
-	res     = cmd("darcs pull \"%s\" --all --match=\"hash %s\"" % (darcs_repo, chash), hg_repo)
-	if re.search('^We have conflicts in the following files:$', res, re.MULTILINE):
-		print "Trying to revert files to work around conflict..."
-		rev_res = cmd ("darcs revert --all", hg_repo)
-		print rev_res
-	print res
-	new_tip = darcs_tip(darcs_repo)
-	if not new_tip != old_tip + 1:
-		error("Darcs pull did not work as expected: " + res)
-
-def darcs_changes_summary(darcs_repo, chash):
-	"""Gets the changes from the darcs summary. This returns the chronological
-	list of changes as (change_type, args). Eg. ('add_file', 'foo.txt') or
-	('move', ['foo.txt','bar.txt'])."""
-	change = cmd("darcs changes --summary --xml-output --match=\"hash %s\"" % (chash), darcs_repo)
-	doc = xml_dom.parseString(change)
-	for patch_node in doc.childNodes[0].childNodes:
-		summary_nodes = filter(lambda n: n.nodeName == "summary" and n.nodeType == n.ELEMENT_NODE, patch_node.childNodes)
-		for summary_node in summary_nodes:
-			change_nodes = filter(lambda n: n.nodeType == n.ELEMENT_NODE, summary_node.childNodes)
-			if len(change_nodes) == 0:
-				name = filter(lambda n: n.nodeName == "name", patch_node.childNodes)
-				if not name:
-					error("Darcs patch has an empty summary node and no name: " + patch_node.toxml())
-				name = name[0].childNodes[0].data.strip()
-				(tag, sub_count) = re.subn('^TAG ', '', name, 1)
-				if sub_count != 1:
-					error("Darcs patch has an empty summary node but doesn't look like a tag: " + patch_node.toxml());
-			for change_node in change_nodes:
-				change = change_node.nodeName
-				if change == 'modify_file':
-					yield change, change_node.childNodes[0].data.strip()
-				elif change == 'add_file':
-					yield change, change_node.childNodes[0].data.strip()
-				elif change == 'remove_file':
-					yield change, change_node.childNodes[0].data.strip()
-				elif change == 'add_directory':
-					yield change, change_node.childNodes[0].data.strip()
-				elif change == 'remove_directory':
-					yield change, change_node.childNodes[0].data.strip()
-				elif change == 'move':
-					yield change, (change_node.getAttribute('from'), change_node.getAttribute('to'))
-				else:
-					error('Problem parsing summary xml: Unexpected element: ' + change_node.toxml())
-
-# ------------------------------------------------------------------------------
-#
-# Mercurial interface
-#
-# ------------------------------------------------------------------------------
-
-def hg_commit( hg_repo, text, author, date ):
-	fd, tmpfile = tempfile.mkstemp(prefix="darcs2hg_")
-	writefile(tmpfile, text)
-	old_tip = hg_tip(hg_repo)
-	cmd("hg add -X _darcs", hg_repo)
-	cmd("hg remove -X _darcs --after", hg_repo)
-	res = cmd("hg commit -l %s -u \"%s\" -d \"%s 0\""  % (tmpfile, author, date), hg_repo)
-	os.close(fd)
-	os.unlink(tmpfile)
-	new_tip = hg_tip(hg_repo)
-	if not new_tip == old_tip + 1:
-		# Sometimes we may have empty commits, we simply skip them
-		if res.strip().lower().find("nothing changed") != -1:
-			pass
-		else:
-			error("Mercurial commit did not work as expected: " + res)
-
-def hg_tip( hg_repo ):
-	"""Returns the latest local revision number in the given repository."""
-	tip = cmd("hg tip", hg_repo, silent=True)
-	tip = tip.split("\n")[0].split(":")[1].strip()
-	return int(tip)
-
-def hg_rename( hg_repo, from_file, to_file ):
-	cmd("hg rename --after \"%s\" \"%s\"" % (from_file, to_file), hg_repo);
-
-def hg_tag ( hg_repo, text, author, date ):
-	old_tip = hg_tip(hg_repo)
-	res = cmd("hg tag -u \"%s\" -d \"%s 0\" \"%s\""	 % (author, date, text), hg_repo)
-	new_tip = hg_tip(hg_repo)
-	if not new_tip == old_tip + 1:
-		error("Mercurial tag did not work as expected: " + res)
-
-def hg_handle_change( hg_repo, author, date, change, arg ):
-	"""Processes a change event as output by darcs_changes_summary. These
-	consist of file move/rename/add/delete commands."""
-	if change == 'modify_file':
-		pass
-	elif change == 'add_file':
-		pass
-	elif change =='remove_file':
-		pass
-	elif change == 'add_directory':
-		pass
-	elif change == 'remove_directory':
-		pass
-	elif change == 'move':
-		hg_rename(hg_repo, arg[0], arg[1])
-	elif change == 'tag':
-		hg_tag(hg_repo, arg, author, date)
-	else:
-		error('Unknown change type ' + change + ': ' + arg)
-
-# ------------------------------------------------------------------------------
-#
-# 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])
-		skip       = None
-	elif len(args) == 3:
-		darcs_repo = os.path.abspath(args[0])
-		hg_repo    = os.path.abspath(args[1])
-		skip       = int(args[2])
-	else:
-		print USAGE
-		sys.exit(-1)
-	print 'This command is deprecated.  Use the convert extension instead.'
-	# Initializes the target repo
-	if not os.path.isdir(darcs_repo + "/_darcs"):
-		print "No darcs directory found at: " + darcs_repo
-		sys.exit(-1)
-	if not os.path.isdir(hg_repo):
-		os.mkdir(hg_repo)
-	elif skip == None:
-		print "Given HG repository must not exist when no SKIP is specified."
-		sys.exit(-1)
-	if skip == None:
-		cmd("hg init \"%s\"" % (hg_repo))
-		cmd("darcs initialize", hg_repo)
-	# Get the changes from the Darcs repository
-	change_number = 0
-	for author, date, summary, chash, description in darcs_changes(darcs_repo):
-		print "== changeset", change_number,
-		if skip != None and change_number <= skip:
-			print "(skipping)"
-		else:
-			text = summary + "\n" + description
-			# The commit hash has a date like 20021020201112
-			# --------------------------------YYYYMMDDHHMMSS
-			date = chash.split("-")[0]
-			epoch = int(mktime(strptime(date, '%Y%m%d%H%M%S')))
-			darcs_pull(hg_repo, darcs_repo, chash)
-			for change, arg in darcs_changes_summary(darcs_repo, chash):
-				hg_handle_change(hg_repo, author, epoch, change, arg)
-			hg_commit(hg_repo, text, author, epoch)
-		change_number += 1
-	print "Darcs repository (_darcs) was not deleted. You can keep or remove it."
-
-# EOF