build-aux/gitlog-to-emacslog

   1 #!/bin/sh
   2
   3 # Convert git log output to ChangeLog format for GNU Emacs.
   4
   5 # Copyright (C) 2014-2015 Free Software Foundation, Inc.
   6
   7 # This program is free software: you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation, either version 3 of the License, or
  10 # (at your option) any later version.
  11
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 # Written by Paul Eggert
  21
  22 LC_ALL=C
  23 export LC_ALL
  24
  25 gen_origin=${1?}
  26
  27 # If this is not a Git repository, just generate an empty ChangeLog.
  28 test -d ${srcprefix}.git || {
  29   # Remove any old ChangeLog, in case it is a vc-dwim symlink.
  30   rm -f "${distprefix}ChangeLog" || exit
  31   >"${distprefix}ChangeLog"
  32   exit
  33 }
  34
  35 # Use Gnulib's packaged ChangeLog generator.
  36 ${srcprefix}build-aux/gitlog-to-changelog --ignore-matching='^; ' \
  37   "$gen_origin.." >"${distprefix}ChangeLog.tmp" || exit
  38
  39 if test -s "${distprefix}ChangeLog.tmp"; then
  40
  41   # Find the years covered by the generated ChangeLog, so that
  42   # a proper copyright notice can be output.
  43   years=`
  44     sed -n 's/^\([0-9][0-9]*\).*/\1/p' "${distprefix}ChangeLog.tmp" |
  45     sort -nu
  46   `
  47   start_year=
  48   end_year=
  49   for year in $years; do
  50     : ${start_year:=$year}
  51     end_year=$year
  52   done
  53
  54   if test "$start_year" = "$end_year"; then
  55     year_range=$start_year
  56   else
  57     year_range=$start_year-$end_year
  58   fi
  59
  60   # Append a proper copyright notice.
  61   sed -n '
  62     1i\
  63
  64     /^;; Local Variables:/,${
  65        s/\(Copyright[ (C)]*\)[0-9]*-[0-9]*/\1'"$year_range"'/
  66        p
  67     }
  68   ' <ChangeLog.1 >>"${distprefix}ChangeLog.tmp" || exit
  69 fi
  70
  71 # Install the generated ChangeLog.
  72 mv -i "${distprefix}ChangeLog.tmp" "${distprefix}ChangeLog"