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import os
import subprocess
import re
from utils import *
from method_missing import MethodMissingMixin
# Enables debugging of GitPython's git commands
GIT_PYTHON_TRACE = os.environ.get("GIT_PYTHON_TRACE", False)
class Git(MethodMissingMixin):
"""
The Git class manages communication with the Git binary
"""
def __init__(self, git_dir):
super(Git, self).__init__()
self.git_dir = git_dir
@property
def get_dir(self):
return self.git_dir
def execute(self, command):
"""
Handles executing the command on the shell and consumes and returns
the returned information (stdout)
``command``
The command to execute
"""
if GIT_PYTHON_TRACE:
print command
proc = subprocess.Popen(command,
cwd = self.git_dir,
stdout=subprocess.PIPE
)
proc.wait()
stdout_value = proc.stdout.read()
proc.stdout.close()
return stdout_value
def transform_kwargs(self, **kwargs):
"""
Transforms Python style kwargs into git command line options.
"""
args = []
for k, v in kwargs.items():
if len(k) == 1:
if v is True:
args.append("-%s" % k)
else:
args.append("-%s%s" % (k, v))
else:
if v is True:
args.append("--%s" % dashify(k))
else:
args.append("--%s=%s" % (dashify(k), v))
return args
def method_missing(self, method, *args, **kwargs):
"""
Run the given git command with the specified arguments and return
the result as a String
``method``
is the command
``args``
is the list of arguments
``kwargs``
is a dict of keyword arguments
Examples
git.rev_list('master', max_count=10, header=True)
Returns
str
"""
opt_args = self.transform_kwargs(**kwargs)
ext_args = map(lambda a: (a == '--') and a or "%s" % a, args)
args = opt_args + ext_args
call = ["git", dashify(method)]
call.extend(args)
stdout_value = self.execute(call)
return stdout_value
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