| Shawn O. Pearce | ad3193a | 2009-04-18 09:54:51 -0700 | [diff] [blame] | 1 | # |
| 2 | # Copyright (C) 2008 The Android Open Source Project |
| 3 | # |
| 4 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | # you may not use this file except in compliance with the License. |
| 6 | # You may obtain a copy of the License at |
| 7 | # |
| 8 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | # |
| 10 | # Unless required by applicable law or agreed to in writing, software |
| 11 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | # See the License for the specific language governing permissions and |
| 14 | # limitations under the License. |
| 15 | |
| Sarah Owens | cecd1d8 | 2012-11-01 22:59:27 -0700 | [diff] [blame] | 16 | from __future__ import print_function |
| Shawn O. Pearce | ad3193a | 2009-04-18 09:54:51 -0700 | [diff] [blame] | 17 | import sys |
| 18 | import os |
| 19 | REPO_TRACE = 'REPO_TRACE' |
| 20 | |
| 21 | try: |
| 22 | _TRACE = os.environ[REPO_TRACE] == '1' |
| 23 | except KeyError: |
| 24 | _TRACE = False |
| 25 | |
| 26 | def IsTrace(): |
| 27 | return _TRACE |
| 28 | |
| 29 | def SetTrace(): |
| 30 | global _TRACE |
| 31 | _TRACE = True |
| 32 | |
| 33 | def Trace(fmt, *args): |
| 34 | if IsTrace(): |
| Sarah Owens | cecd1d8 | 2012-11-01 22:59:27 -0700 | [diff] [blame] | 35 | print(fmt % args, file=sys.stderr) |