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PK��A�Z�3�f��f��hg-to-git.pynu��[��#!/usr/bin/env python """ hg-to-git.py - A Mercurial to GIT converter Copyright (C)2007 Stelian Pop <stelian@popies.net> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, see <http://www.gnu.org/licenses/>. """ import os, os.path, sys import tempfile, pickle, getopt import re if sys.hexversion < 0x02030000: # The behavior of the pickle module changed significantly in 2.3 sys.stderr.write("hg-to-git.py: requires Python 2.3 or later.\n") sys.exit(1) # Maps hg version -> git version hgvers = {} # List of children for each hg revision hgchildren = {} # List of parents for each hg revision hgparents = {} # Current branch for each hg revision hgbranch = {} # Number of new changesets converted from hg hgnewcsets = 0 #------------------------------------------------------------------------------ def usage(): print("""\ %s: [OPTIONS] <hgprj> options: -s, --gitstate=FILE: name of the state to be saved/read for incrementals -n, --nrepack=INT: number of changesets that will trigger a repack (default=0, -1 to deactivate) -v, --verbose: be verbose required: hgprj: name of the HG project to import (directory) """ % sys.argv[0]) #------------------------------------------------------------------------------ def getgitenv(user, date): env = '' elems = re.compile('(.?)\s+<(.)>').match(user) if elems: env += 'export GIT_AUTHOR_NAME="%s" ;' % elems.group(1) env += 'export GIT_COMMITTER_NAME="%s" ;' % elems.group(1) env += 'export GIT_AUTHOR_EMAIL="%s" ;' % elems.group(2) env += 'export GIT_COMMITTER_EMAIL="%s" ;' % elems.group(2) else: env += 'export GIT_AUTHOR_NAME="%s" ;' % user env += 'export GIT_COMMITTER_NAME="%s" ;' % user env += 'export GIT_AUTHOR_EMAIL= ;' env += 'export GIT_COMMITTER_EMAIL= ;' env += 'export GIT_AUTHOR_DATE="%s" ;' % date env += 'export GIT_COMMITTER_DATE="%s" ;' % date return env #------------------------------------------------------------------------------ state = '' opt_nrepack = 0 verbose = False try: opts, args = getopt.getopt(sys.argv[1:], 's:t:n:v', ['gitstate=', 'tempdir=', 'nrepack=', 'verbose']) for o, a in opts: if o in ('-s', '--gitstate'): state = a state = os.path.abspath(state) if o in ('-n', '--nrepack'): opt_nrepack = int(a) if o in ('-v', '--verbose'): verbose = True if len(args) != 1: raise Exception('params') except: usage() sys.exit(1) hgprj = args[0] os.chdir(hgprj) if state: if os.path.exists(state): if verbose: print('State does exist, reading') f = open(state, 'r') hgvers = pickle.load(f) else: print('State does not exist, first run') sock = os.popen('hg tip --template "{rev}"') tip = sock.read() if sock.close(): sys.exit(1) if verbose: print('tip is', tip) # Calculate the branches if verbose: print('analysing the branches...') hgchildren["0"] = () hgparents["0"] = (None, None) hgbranch["0"] = "master" for cset in range(1, int(tip) + 1): hgchildren[str(cset)] = () prnts = os.popen('hg log -r %d --template "{parents}"' % cset).read().strip().split(' ') prnts = map(lambda x: x[:x.find(':')], prnts) if prnts[0] != '': parent = prnts[0].strip() else: parent = str(cset - 1) hgchildren[parent] += ( str(cset), ) if len(prnts) > 1: mparent = prnts[1].strip() hgchildren[mparent] += ( str(cset), ) else: mparent = None hgparents[str(cset)] = (parent, mparent) if mparent: # For merge changesets, take either one, preferably the 'master' branch if hgbranch[mparent] == 'master': hgbranch[str(cset)] = 'master' else: hgbranch[str(cset)] = hgbranch[parent] else: # Normal changesets # For first children, take the parent branch, for the others create a new branch if hgchildren[parent][0] == str(cset): hgbranch[str(cset)] = hgbranch[parent] else: hgbranch[str(cset)] = "branch-" + str(cset) if "0" not in hgvers: print('creating repository') os.system('git init') # loop through every hg changeset for cset in range(int(tip) + 1): # incremental, already seen if str(cset) in hgvers: continue hgnewcsets += 1 # get info log_data = os.popen('hg log -r %d --template "{tags}\n{date\|date}\n{author}\n"' % cset).readlines() tag = log_data[0].strip() date = log_data[1].strip() user = log_data[2].strip() parent = hgparents[str(cset)][0] mparent = hgparents[str(cset)][1] #get comment (fdcomment, filecomment) = tempfile.mkstemp() csetcomment = os.popen('hg log -r %d --template "{desc}"' % cset).read().strip() os.write(fdcomment, csetcomment) os.close(fdcomment) print('-----------------------------------------') print('cset:', cset) print('branch:', hgbranch[str(cset)]) print('user:', user) print('date:', date) print('comment:', csetcomment) if parent: print('parent:', parent) if mparent: print('mparent:', mparent) if tag: print('tag:', tag) print('-----------------------------------------') # checkout the parent if necessary if cset != 0: if hgbranch[str(cset)] == "branch-" + str(cset): print('creating new branch', hgbranch[str(cset)]) os.system('git checkout -b %s %s' % (hgbranch[str(cset)], hgvers[parent])) else: print('checking out branch', hgbranch[str(cset)]) os.system('git checkout %s' % hgbranch[str(cset)]) # merge if mparent: if hgbranch[parent] == hgbranch[str(cset)]: otherbranch = hgbranch[mparent] else: otherbranch = hgbranch[parent] print('merging', otherbranch, 'into', hgbranch[str(cset)]) os.system(getgitenv(user, date) + 'git merge --no-commit -s ours "" %s %s' % (hgbranch[str(cset)], otherbranch)) # remove everything except .git and .hg directories os.system('find . \( -path "./.hg" -o -path "./.git" \) -prune -o ! -name "." -print \| xargs rm -rf') # repopulate with checkouted files os.system('hg update -C %d' % cset) # add new files os.system('git ls-files -x .hg --others \| git update-index --add --stdin') # delete removed files os.system('git ls-files -x .hg --deleted \| git update-index --remove --stdin') # commit os.system(getgitenv(user, date) + 'git commit --allow-empty --allow-empty-message -a -F %s' % filecomment) os.unlink(filecomment) # tag if tag and tag != 'tip': os.system(getgitenv(user, date) + 'git tag %s' % tag) # delete branch if not used anymore... if mparent and len(hgchildren[str(cset)]): print("Deleting unused branch:", otherbranch) os.system('git branch -d %s' % otherbranch) # retrieve and record the version vvv = os.popen('git show --quiet --pretty=format:%H').read() print('record', cset, '->', vvv) hgvers[str(cset)] = vvv if hgnewcsets >= opt_nrepack and opt_nrepack != -1: os.system('git repack -a -d') # write the state for incrementals if state: if verbose: print('Writing state') f = open(state, 'w') pickle.dump(hgvers, f) # vim: et ts=8 sw=4 sts=4 PK��A�Zɹ�z��z�� hg-to-git.txtnu��[��hg-to-git.py is able to convert a Mercurial repository into a git one, and preserves the branches in the process (unlike tailor) hg-to-git.py can probably be greatly improved (it's a rather crude combination of shell and python) but it does already work quite well for me. Features: - supports incremental conversion (for keeping a git repo in sync with a hg one) - supports hg branches - converts hg tags Note that the git repository will be created 'in place' (at the same location as the source hg repo). You will have to manually remove the '.hg' directory after the conversion. Also note that the incremental conversion uses 'simple' hg changesets identifiers (ordinals, as opposed to SHA-1 ids), and since these ids are not stable across different repositories the hg-to-git.py state file is forever tied to one hg repository. Stelian Pop <stelian@popies.net> PK��A�Z�3�f��f��hg-to-git.pynu��[��PK��A�Zɹ�z��z�� hg-to-git.txtnu��[��PK��Y#��

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