lxcf/script/gitlog2changelog.py

   1 #!/usr/bin/python
   2 # Copyright 2008 Marcus D. Hanwell <marcus@cryos.org>
   3 # Distributed under the terms of the GNU General Public License v2 or later
   4
   5 # Modified by (C) 2012-2014 TAMUKI Shoichi <tamuki@linet.gr.jp>
   6
   7 import os, re
   8
   9 # Execute git log with the desired command line options.
  10 fin = os.popen("git log --date=short --stat --summary --since=\"1970-01-01 00:00:00\"", "r")
  11 # Create a ChangeLog file in the current directory.
  12 fout = open("ChangeLog", "w")
  13
  14 # Set up the loop variables in order to locate the blocks we want
  15 authorFound = False
  16 dateFound = False
  17 messageFound = False
  18 messageNL = False
  19 messageSkip = False
  20 messageItem = False
  21 message = ""
  22 filesFound = False
  23 files = ""
  24 prevAuthorLine = ""
  25 commitSet = ""
  26
  27 # The main part of the loop
  28 for line in fin:
  29         # The commit line marks the start of a new commit object.
  30         if re.search("^commit ", line):
  31                 # Start all over again...
  32                 authorFound = False
  33                 dateFound = False
  34                 messageFound = False
  35                 messageNL = False
  36                 messageSkip = False
  37                 messageItem = False
  38                 message = ""
  39                 filesFound = False
  40                 files = ""
  41         # Match the author line and extract the part we want
  42         elif re.search("^Author: ", line):
  43                 author = line[8:].strip()
  44                 authorFound = True
  45         # Match the date line
  46         elif re.search("^Date:   ", line):
  47                 date = line[8:].strip()
  48                 dateFound = True
  49         # Extract the actual commit message for this commit
  50         elif authorFound and dateFound and not messageFound:
  51                 # Find the commit message if we can
  52                 if line == "\n":
  53                         if messageNL:
  54                                 messageFound = True
  55                         else:
  56                                 messageNL = True
  57                 elif line == "    \n":
  58                         if not message.endswith("\n"):
  59                                 message += "\n"
  60                 # The sign off line is ignored
  61                 elif re.search("^    Signed-off-by: ", line):
  62                         pass
  63                 # This is a special workaround for the git log of LXC Facility
  64                 elif date == "2014-03-02" and re.search("^    This patch series", line):
  65                         messageSkip = True
  66                 elif date == "2014-03-02" and re.search("^    MIME-Version: ", line):
  67                         messageSkip = False
  68                 elif messageSkip:
  69                         pass
  70                 else:
  71                         if messageItem:
  72                                 if not message.endswith("\n"):
  73                                         if not re.search("^    \s*[^*-]", line):
  74                                                 message += "\n"
  75                                 if not re.search("^    \s*[*-]", line):
  76                                         messageItem = False
  77                         else:
  78                                 if re.search("^    \s*[*-]", line):
  79                                         if not message.endswith("\n"):
  80                                                 message += "\n"
  81                                         messageItem = True
  82                         if message.endswith("."):
  83                                 message += "  "
  84                         elif not message.endswith("\n"):
  85                                 message += " "
  86                         message += line.strip()
  87         # Collect the files for this commit. FIXME: Still need to add +/- to files
  88         elif authorFound and dateFound and messageFound and not filesFound:
  89                 fileList = line.split(" | ", 1)
  90                 if len(fileList) == 2:
  91                         if files:
  92                                 files += ", "
  93                         files += fileList[0].strip()
  94                 # If this line is hit all of the files have been stored for this commit
  95                 elif re.search("^ [0-9]* files? changed, ", line):
  96                         filesFound = True
  97         # All of the parts of the commit have been found - write out the entry
  98         if authorFound and dateFound and messageFound and filesFound:
  99                 # First the author line, only outputted if it is the first for that
 100                 # author on this day
 101                 authorLine = date + "  " + author
 102                 if not prevAuthorLine:
 103                         fout.write(authorLine + "\n")
 104                         commitSet = ""
 105                 elif authorLine != prevAuthorLine:
 106                         # Write out the commit lines
 107                         fout.write(commitSet + "\n")
 108                         fout.write("\n" + authorLine + "\n")
 109                         commitSet = ""
 110
 111                 # Assemble the actual commit message line(s) and limit the line length
 112                 # to 78 characters.
 113                 commitLine = files + ":" + message
 114                 lc = len(commitLine)
 115                 commit = ""
 116                 i = j = 0
 117                 while i < lc:
 118                         if i == j:
 119                                 lv = 0
 120                         commit += "\n\t* " if i == 0 else "\n\t  "
 121                         if lv == 1:
 122                                 commit += "  "
 123                         if i + 68 - lv * 2 >= lc:
 124                                 i2 = lc - 1
 125                         else:
 126                                 p = -1
 127                                 for s in re.finditer("\s", commitLine[i:i + 69 - lv * 2]):
 128                                         p = i + s.start()
 129                                 i2 = i + 67 - lv * 2 if p == -1 else p
 130                         p = commitLine.find("\n", i, i + 68 - lv * 2)
 131                         if 0 <= p < i2:
 132                                 i2 = p
 133                         if i == j:
 134                                 p = commitLine.find("\n", i)
 135                                 j = lc if p == -1 else p + 1
 136                                 if re.search("^[*-]", commitLine[i:i + j - 1]):
 137                                         lv = 1
 138                         commit += commitLine[i:i2 + 1].strip()
 139                         i = i2 + 1
 140
 141                 # Concatenate the commit lines in ascending order by time
 142                 commitSet = commit + commitSet
 143
 144                 # Now reset all the variables ready for a new commit block.
 145                 authorFound = False
 146                 dateFound = False
 147                 messageFound = False
 148                 messageNL = False
 149                 messageSkip = False
 150                 messageItem = False
 151                 message = ""
 152                 filesFound = False
 153                 files = ""
 154                 prevAuthorLine = authorLine
 155
 156 # Write out the commit lines
 157 fout.write(commitSet + "\n")
 158
 159 # Write out the relay message
 160 #fout.write("\nFor the changes before 1.0.0, see ChangeLog.1\n")
 161
 162 # Close the input and output lines now that we are finished.
 163 fin.close()
 164 fout.close()