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https://gerrit.googlesource.com/git-repo
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90 lines
2.1 KiB
Python
90 lines
2.1 KiB
Python
#
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# Copyright (C) 2008 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import sys
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import subprocess
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import tempfile
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from error import EditorError
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class Editor(object):
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"""Manages the user's preferred text editor."""
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_editor = None
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globalConfig = None
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@classmethod
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def _GetEditor(cls):
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if cls._editor is None:
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cls._editor = cls._SelectEditor()
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return cls._editor
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@classmethod
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def _SelectEditor(cls):
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e = os.getenv('GIT_EDITOR')
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if e:
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return e
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e = cls.globalConfig.GetString('core.editor')
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if e:
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return e
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e = os.getenv('VISUAL')
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if e:
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return e
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e = os.getenv('EDITOR')
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if e:
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return e
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if os.getenv('TERM') == 'dumb':
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print >>sys.stderr,\
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"""No editor specified in GIT_EDITOR, core.editor, VISUAL or EDITOR.
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Tried to fall back to vi but terminal is dumb. Please configure at
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least one of these before using this command."""
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sys.exit(1)
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return 'vi'
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@classmethod
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def EditString(cls, data):
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"""Opens an editor to edit the given content.
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Args:
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data : the text to edit
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Returns:
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new value of edited text; None if editing did not succeed
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"""
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editor = cls._GetEditor().split()
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fd, path = tempfile.mkstemp()
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try:
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os.write(fd, data)
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os.close(fd)
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fd = None
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if subprocess.Popen(editor + [path]).wait() != 0:
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raise EditorError()
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fd = open(path)
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try:
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return read()
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finally:
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fd.close()
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finally:
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if fd:
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os.close(fd)
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os.remove(path)
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