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"""Various utilities that are handy."""
import codecs
import re
import os
import os.path
import subprocess
import sys
def get_all_source_files(arr=None, prefix="."):
"""Return source files."""
if arr is None:
arr = []
if not os.path.isdir(prefix):
# assume a file
arr.append(prefix)
return arr
for fx in os.listdir(prefix):
# pylint: disable=too-many-boolean-expressions
if (fx.startswith(".") or fx.startswith("pcre-") or fx.startswith("32bit")
or fx.startswith("mongodb-") or fx.startswith("debian")
or fx.startswith("mongo-cxx-driver") or fx.startswith("sqlite") or "gotools" in fx
or fx.find("mozjs") != -1):
continue
# pylint: enable=too-many-boolean-expressions
def is_followable_dir(prefix, full):
"""Return True if 'full' is a followable directory."""
if not os.path.isdir(full):
return False
if not os.path.islink(full):
return True
# Follow softlinks in the modules directory (e.g: enterprise).
if os.path.split(prefix)[1] == "modules":
return True
return False
full = prefix + "/" + fx
if is_followable_dir(prefix, full):
get_all_source_files(arr, full)
else:
if full.endswith(".cpp") or full.endswith(".h") or full.endswith(".c"):
full = full.replace("//", "/")
arr.append(full)
return arr
def get_git_branch():
"""Return the git branch version."""
if not os.path.exists(".git") or not os.path.isdir(".git"):
return None
version = open(".git/HEAD", "r").read().strip()
if not version.startswith("ref: "):
return version
version = version.split("/")
version = version[len(version) - 1]
return version
def get_git_branch_string(prefix="", postfix=""):
"""Return the git branch name."""
tt = re.compile(r"[/\\]").split(os.getcwd())
if len(tt) > 2 and tt[len(tt) - 1] == "mongo":
par = tt[len(tt) - 2]
mt = re.compile(r".*_([vV]\d+\.\d+)$").match(par)
if mt is not None:
return prefix + mt.group(1).lower() + postfix
if par.find("Nightly") > 0:
return ""
branch = get_git_branch()
if branch is None or branch == "master":
return ""
return prefix + branch + postfix
def get_git_version():
"""Return the git version."""
if not os.path.exists(".git") or not os.path.isdir(".git"):
return "nogitversion"
version = open(".git/HEAD", "r").read().strip()
if not version.startswith("ref: "):
return version
version = version[5:]
git_ver = ".git/" + version
if not os.path.exists(git_ver):
return version
return open(git_ver, "r").read().strip()
def get_git_describe():
"""Return 'git describe'."""
with open(os.devnull, "r+") as devnull:
proc = subprocess.Popen("git describe", stdout=subprocess.PIPE, stderr=devnull,
stdin=devnull, shell=True)
return proc.communicate()[0].strip()
def execsys(args):
"""Execute a subprocess of 'args'."""
if isinstance(args, str):
rc = re.compile(r"\s+")
args = rc.split(args)
proc = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
res = proc.communicate()
return res
def which(executable):
"""Return full path of 'executable'."""
if sys.platform == "win32":
paths = os.environ.get("Path", "").split(";")
else:
paths = os.environ.get("PATH", "").split(":")
for path in paths:
path = os.path.expandvars(path)
path = os.path.expanduser(path)
path = os.path.abspath(path)
executable_path = os.path.join(path, executable)
if os.path.exists(executable_path):
return executable_path
return executable
def find_python(min_version=(2, 5)):
"""Return path of python."""
try:
if sys.version_info >= min_version:
return sys.executable
except AttributeError:
# In case the version of Python is somehow missing sys.version_info or sys.executable.
pass
version = re.compile(r"[Pp]ython ([\d\.]+)", re.MULTILINE)
binaries = ("python27", "python2.7", "python26", "python2.6", "python25", "python2.5", "python")
for binary in binaries:
try:
out, err = subprocess.Popen([binary, "-V"], stdout=subprocess.PIPE,
stderr=subprocess.PIPE).communicate()
for stream in (out, err):
match = version.search(stream)
if match:
versiontuple = tuple(map(int, match.group(1).split(".")))
if versiontuple >= min_version:
return which(binary)
except Exception: # pylint: disable=broad-except
pass
raise Exception("could not find suitable Python (version >= %s)" % ".".join(
str(v) for v in min_version))
def replace_with_repr(unicode_error):
"""Codec error handler replacement."""
# Unicode is a pain, some strings cannot be unicode()'d
# but we want to just preserve the bytes in a human-readable
# fashion. This codec error handler will substitute the
# repr() of the offending bytes into the decoded string
# at the position they occurred
offender = unicode_error.object[unicode_error.start:unicode_error.end]
return (unicode(repr(offender).strip("'").strip('"')), unicode_error.end)
codecs.register_error("repr", replace_with_repr)
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