Johnny Chen | 1a0062a | 2011-05-23 21:50:12 +0000 | [diff] [blame] | 1 | #!/usr/bin/env python |
| 2 | |
| 3 | """ |
| 4 | Convert the raw message sources from git patch emails to git-am friendly files. |
| 5 | |
| 6 | Usage: |
| 7 | |
| 8 | 1. Mail.app -> Save As -> api.eml (Raw Message Source) |
| 9 | 2. .../convert.py api.eml |
Johnny Chen | 7af2f02 | 2011-06-14 22:23:54 +0000 | [diff] [blame] | 10 | 3. git am [--signoff] < api.eml |
| 11 | 4. git svn dcommit [--commit-url https://id@llvm.org/svn/llvm-project/lldb/trunk] |
Johnny Chen | 1a0062a | 2011-05-23 21:50:12 +0000 | [diff] [blame] | 12 | """ |
| 13 | |
| 14 | import os, re, sys |
| 15 | import StringIO |
| 16 | |
| 17 | def usage(problem_file=None): |
| 18 | if problem_file: |
| 19 | print "%s is not a file" % problem_file |
| 20 | print "Usage: convert.py raw-message-source [raw-message-source2 ...]" |
| 21 | sys.exit(0) |
| 22 | |
| 23 | def do_convert(file): |
| 24 | """Skip all preceding mail message headers until 'From: ' is encountered. |
| 25 | Then for each line ('From: ' header included), replace the dos style CRLF |
| 26 | end-of-line with unix style LF end-of-line. |
| 27 | """ |
| 28 | print "converting %s ..." % file |
| 29 | |
| 30 | with open(file, 'r') as f_in: |
| 31 | content = f_in.read() |
| 32 | |
| 33 | # The new content to be written back to the same file. |
| 34 | new_content = StringIO.StringIO() |
| 35 | |
| 36 | # Boolean flag controls whether to start printing lines. |
| 37 | from_header_seen = False |
| 38 | |
| 39 | # By default, splitlines() don't include line breaks. CRLF should be gone. |
| 40 | for line in content.splitlines(): |
| 41 | # Wait till we scan the 'From: ' header before start printing the lines. |
| 42 | if not from_header_seen: |
| 43 | if not line.startswith('From: '): |
| 44 | continue |
| 45 | else: |
| 46 | from_header_seen = True |
| 47 | |
| 48 | print >> new_content, line |
| 49 | |
| 50 | with open(file, 'w') as f_out: |
| 51 | f_out.write(new_content.getvalue()) |
| 52 | |
| 53 | print "done" |
| 54 | |
| 55 | def main(): |
| 56 | if len(sys.argv) == 1: |
| 57 | usage() |
| 58 | # Convert the raw message source one by one. |
| 59 | for file in sys.argv[1:]: |
| 60 | if not os.path.isfile(file): |
| 61 | usage(file) |
| 62 | do_convert(file) |
| 63 | |
| 64 | if __name__ == '__main__': |
| 65 | main() |