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import os
import subprocess
def find_git(env=None):
"""Find the git binary."""
if env is not None and 'GIT' in env:
return env.get_flat('GIT')
# Get version from GIT
if os.path.exists("/usr/bin/git"):
# this is useful when doing make dist without configuring
return "/usr/bin/git"
return None
def has_submodules(path):
"""Check whether a source directory is git-versioned and has submodules.
:param path: Path to Samba source directory
"""
return (os.path.isdir(os.path.join(path, ".git")) and
os.path.isfile(os.path.join(path, ".gitmodules")))
def read_submodule_status(path, env=None):
"""Check status of submodules.
:param path: Path to git directory
:param env: Optional waf environment
:return: Yields tuples with submodule relpath and status
(one of: 'out-of-date', 'not-checked-out', 'up-to-date')
:raise RuntimeError: raised when parsing of 'git submodule status' output
fails.
"""
if not has_submodules(path):
# No point in running git.
return
git = find_git(env)
if git is None:
return
p = subprocess.Popen([git, "submodule", "status"], stdout=subprocess.PIPE,
cwd=path)
(stdout, stderr) = p.communicate(None)
for l in stdout.splitlines():
l = l.rstrip()
status = l[0]
l = l[1:]
parts = l.split(" ")
if len(parts) > 2 and status in ("-", "+"):
yield (parts[1], "out-of-date")
elif len(parts) == 2 and status == "-":
yield (parts[1], "not-checked-out")
elif len(parts) > 2 and status == " ":
yield (parts[1], "up-to-date")
else:
raise RuntimeError("Unable to parse submodule status: %r, %r" % (status, parts))
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