--- 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