Review Board 7.1 alpha 0 (dev)

from repository import Repository

from subprocess import Popen

import subprocess

class GitRepository(Repository):

    def retrieve_file_blob(self, sha):

        """

        Retrieves the Blob for the specified file sha

        :param sha: The Git sha of the file.

        :return: The blob given by the Git file sha.

        >>> repo = GitRepository('/home/j/src/git-sandbox')

        >>> repo.retrieve_file_blob('ce013625030ba8dba906f756967f9e9ca394464a')

        'hello'

        """

        # git show <sha>  outputs the file, alternatively so can

        # git cat-file -p <sha>

        p = Popen(['git', 'show', sha],

                         stdout=subprocess.PIPE, cwd=self.location)

        return p.stdout.read()[:-1]

    def file_exists(self, sha):

        """

        Checks whether the file exists at the specified file sha.

        :param sha: The Git sha of the file.

        :return: Whether the file exists.

        >>> repo = GitRepository('/home/j/src/git-sandbox')

        >>> repo.file_exists('ce013625030ba8dba906f756967f9e9ca394464a')

        True

        >>> repo = GitRepository('/home/j/src/git-sandbox')

        >>> repo.file_exists('ce013625030ba8dba906f756967f9e9ca3944642')

        False

        """

        p = Popen(['git', 'show', sha], cwd=self.location)

        p.communicate()

        return p.returncode == 0

if __name__ == "__main__":

    import doctest

    doctest.testmod()