# Copyright 2017 The PDFium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Classes for dealing with git."""
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import subprocess
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from common import RunCommandPropagateErr
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class GitHelper(object):
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"""Issues git commands. Stateful."""
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def __init__(self):
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self.stashed = 0
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def Checkout(self, branch):
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"""Checks out a branch."""
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RunCommandPropagateErr(['git', 'checkout', branch], exit_status_on_error=1)
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def FetchOriginMaster(self):
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"""Fetches new changes on origin/master."""
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RunCommandPropagateErr(['git', 'fetch', 'origin', 'master'],
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exit_status_on_error=1)
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def StashPush(self):
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"""Stashes uncommitted changes."""
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output = RunCommandPropagateErr(['git', 'stash', '--include-untracked'],
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exit_status_on_error=1)
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if 'No local changes to save' in output:
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return False
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self.stashed += 1
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return True
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def StashPopAll(self):
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"""Pops as many changes as this instance stashed."""
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while self.stashed > 0:
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RunCommandPropagateErr(['git', 'stash', 'pop'], exit_status_on_error=1)
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self.stashed -= 1
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def GetCurrentBranchName(self):
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"""Returns a string with the current branch name."""
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return RunCommandPropagateErr(
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['git', 'rev-parse', '--abbrev-ref', 'HEAD'],
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exit_status_on_error=1).strip()
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def GetCurrentBranchHash(self):
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return RunCommandPropagateErr(
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['git', 'rev-parse', 'HEAD'], exit_status_on_error=1).strip()
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def IsCurrentBranchClean(self):
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output = RunCommandPropagateErr(['git', 'status', '--porcelain'],
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exit_status_on_error=1)
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return not output
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def BranchExists(self, branch_name):
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"""Return whether a branch with the given name exists."""
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output = RunCommandPropagateErr(['git', 'rev-parse', '--verify',
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branch_name])
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return output is not None
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def CloneLocal(self, source_repo, new_repo):
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RunCommandPropagateErr(['git', 'clone', source_repo, new_repo],
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exit_status_on_error=1)
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