1 #!/usr/bin/env python 2 # Copyright (c) 2016 The Chromium Authors. All rights reserved. 3 # Use of this source code is governed by a BSD-style license that can be 4 # found in the LICENSE file. 5 """Script to extract edits from clang tool output. 6 7 If a clang tool emits edits, then the edits should look like this: 8 ... 9 ==== BEGIN EDITS ==== 10 <edit1> 11 <edit2> 12 ... 13 ==== END EDITS ==== 14 ... 15 16 extract_edits.py takes input that is concatenated from multiple tool invocations 17 and extract just the edits. In other words, given the following input: 18 ... 19 ==== BEGIN EDITS ==== 20 <edit1> 21 <edit2> 22 ==== END EDITS ==== 23 ... 24 ==== BEGIN EDITS ==== 25 <yet another edit1> 26 <yet another edit2> 27 ==== END EDITS ==== 28 ... 29 extract_edits.py would emit the following output: 30 <edit1> 31 <edit2> 32 <yet another edit1> 33 <yet another edit2> 34 35 This python script is mainly needed on Windows. 36 On unix this script can be replaced with running sed as follows: 37 38 $ cat run_tool.debug.out \ 39 | sed '/^==== BEGIN EDITS ====$/,/^==== END EDITS ====$/{//!b};d' 40 | sort | uniq 41 """ 42 43 44 import sys 45 46 47 def main(): 48 unique_lines = set() 49 inside_marker_lines = False 50 for line in sys.stdin: 51 line = line.rstrip("\n\r") 52 if line == '==== BEGIN EDITS ====': 53 inside_marker_lines = True 54 continue 55 if line == '==== END EDITS ====': 56 inside_marker_lines = False 57 continue 58 if inside_marker_lines and line not in unique_lines: 59 unique_lines.add(line) 60 print line 61 return 0 62 63 64 if __name__ == '__main__': 65 sys.exit(main()) 66
