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#!/usr/bin/env python3
# git config linker (gcl) v1.0
# Written by Martin Fischer <martin@push-f.com> and licensed under MIT.
import sys
import os
import configparser
import subprocess
import shutil
GITCONFIGS = 'gitconfigs/'
class colors:
WARNING = '\033[93m'
FAIL = '\033[91m'
ENDC = '\033[0m'
def print_usage():
print(
'''git config linker (gcl):
gcl status check the status of the directories in .
gcl link <repo>... move <repo>/.git/config to gitconfigs/<repo>
(leaving a symlink behind)
gcl clone list all configs that are not cloned
gcl clone <config>... clone a repository using gitconfigs/<config>
gcl mv <src> <dest> rename a repo and its config and update the symlink
gcl unlink <repo>... undo "gcl link <repo>"
(only needed if you want to stop using gcl)
'''
)
sys.exit()
args = sys.argv[1:]
if len(args) == 0:
print_usage()
if not os.path.exists(GITCONFIGS + '/.git/config'):
sys.exit(f'expected {GITCONFIGS} to be a git repository')
def get_link_error(path):
configpath = path + '/.git/config'
if not os.path.exists(configpath):
missing = os.path.relpath(os.path.realpath(configpath))
return (
colors.FAIL + 'BROKEN LINK' + colors.ENDC + f' ({missing} does not exist)'
)
elif (
os.path.islink(configpath)
and os.path.relpath(os.path.realpath(configpath)) != GITCONFIGS + path
):
missing = os.path.relpath(os.path.realpath(configpath))
return colors.WARNING + 'LINK MISMATCH' + colors.ENDC + f' ({missing})'
def get_repo_status(path):
errors = []
link_error = get_link_error(path)
if link_error:
errors.append(link_error)
if hasremote(path + '/.git/config'):
try:
if (
subprocess.check_output(
['git', 'branch', '-r', '--contains', 'HEAD'],
cwd=path,
stderr=subprocess.DEVNULL,
)
== b''
):
errors.append(colors.WARNING + 'UNPUSHED' + colors.ENDC)
except subprocess.CalledProcessError as err:
if (
subprocess.run(
['git', 'rev-parse', 'HEAD'],
cwd=path,
stderr=subprocess.DEVNULL,
stdout=subprocess.DEVNULL,
)
== 0
):
# the first command did not just fail because there are no commits yet
raise err
else:
errors.append(colors.FAIL + 'NO REMOTE' + colors.ENDC)
if subprocess.check_output(['git', 'status', '--porcelain'], cwd=path) != b'':
errors.append(colors.WARNING + 'DIRTY' + colors.ENDC)
return ', '.join(errors)
def print_repo_table(reponames):
maxlen = max([len(s) for s in reponames])
for reponame in reponames:
print(f'\t{reponame.ljust(maxlen)} {get_repo_status(reponame)}')
print()
linked = []
unlinked = []
not_a_repo = []
def hasremote(path):
config = configparser.ConfigParser()
config.read(path)
return any(
[
':' in config[s].get('url', '')
for s in config.sections()
if s.startswith('remote')
]
)
def scan():
for filename in sorted(os.listdir()):
if not os.path.isdir(filename):
continue
configpath = filename + '/.git/config'
if os.path.islink(configpath):
linked.append(filename)
elif not os.path.exists(configpath):
not_a_repo.append(filename)
else:
unlinked.append(filename)
cmd = args.pop(0)
if cmd == 'status':
scan()
if not_a_repo:
print(f"non-repositories:\n")
print('\t' + '\n\t'.join(not_a_repo))
print()
if unlinked:
print('unlinked repos:\n (link with "gcl link <name>...")\n')
print_repo_table(unlinked)
if linked:
print('linked repos:\n')
print_repo_table(linked)
elif cmd == 'link':
if len(args) == 0:
sys.exit('Nothing specified, nothing linked.')
for repo in args:
configpath = repo + '/.git/config'
if not os.path.isfile(configpath):
print(
f"skipping '{repo}' because {configpath} is not a file (maybe already linked?)"
)
continue
if os.path.exists(GITCONFIGS + repo):
sys.exit(f"aborting since {GITCONFIGS + repo} already exists")
os.rename(configpath, GITCONFIGS + repo)
os.symlink('../../' + GITCONFIGS + repo, configpath)
elif cmd == 'unlink':
if len(args) == 0:
sys.exit('Nothing specified, nothing unlinked.')
for repo in args:
configpath = repo + '/.git/config'
if not os.path.islink(configpath):
continue
if not os.path.isfile(configpath):
print(f"skipping '{repo}' because {config} is not a file")
continue
os.unlink(configpath)
shutil.copyfile(GITCONFIGS + repo, configpath)
os.unlink(GITCONFIGS + repo)
elif cmd == 'clone':
if len(args) == 0:
scan()
available = set(os.listdir(GITCONFIGS)) - set(linked) - set(['.git'])
if available:
print('uncloned configs:\n (clone with "gcl clone <name>...")\n')
for l in sorted(available):
print(' ' + l)
print()
for arg in args:
if os.path.exists(arg):
print(f"skipping '{arg}' because the directory already exists")
continue
if not os.path.isfile(GITCONFIGS + arg):
print(f"skipping '{arg}' because {GITCONFIGS}/{arg} doesn't exist")
continue
subprocess.run(['git', 'init', arg])
os.unlink(arg + '/.git/config')
os.symlink('../../' + GITCONFIGS + arg, arg + '/.git/config')
subprocess.run(['git', 'pull'], cwd=arg)
elif cmd == 'mv':
if len(args) != 2:
print_usage()
src, dest = args
if '/' in src or '/' in dest:
sys.exit('fatal: src and dest may not contain slashes')
if src == 'gitconfigs':
sys.exit('fatal: cannot move gitconfigs')
link_error = get_link_error(src)
if link_error:
sys.exit('aborting because src is not properly linked: ' + link_error)
if os.path.exists(dest):
sys.exit(f"fatal: repo destination '{dest}' already exists")
if os.path.exists(GITCONFIGS + dest):
sys.exit(f"fatal: config destination '{GITCONFIGS + dest}' already exists")
os.rename(src, dest)
os.rename(GITCONFIGS + src, GITCONFIGS + dest)
os.unlink(dest + '/.git/config')
os.symlink('../../' + GITCONFIGS + dest, dest + '/.git/config')
else:
print_usage()
|
