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#!/bin/sh
# Convert git log output to ChangeLog format for GNU Emacs.
# Copyright (C) 2014-2015 Free Software Foundation, Inc.
# Author: Paul Eggert
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
LC_ALL=C
export LC_ALL
# The newest revision that should not appear in the generated ChangeLog.
gen_origin=b98a2ef74758f78831d7c6dd4ae13f3433d77869
force=
output=ChangeLog
nmax=2
while [ $# -gt 0 ]; do
case "$1" in
-g|--gen-origin) gen_origin="$2" ; shift ;;
-f|--force) force=1 ;;
-n|--nmax) nmax="$2"; shift ;;
-o|--output) output="$2" ; shift ;;
*) echo "Unrecognized argument: $1" >&2; exit 1 ;;
esac
shift
done
if [ ! -f ChangeLog.$nmax ]; then
echo "Can't find ChangeLog.$nmax" >&2
echo "Must be run from the top source directory" >&2
exit 1
fi
if [ -f "$output" ]; then
[ ! "$force" ] && echo "$output exists" >&2 && exit 1
rm -f "$output" || exit 1
fi
# If this is not a Git repository, just generate an empty ChangeLog.
test -d .git || {
>"$output"
exit
}
# Use Gnulib's packaged ChangeLog generator.
./build-aux/gitlog-to-changelog --ignore-matching='^; ' \
--ignore-line='^; ' --format='%B' \
"$gen_origin.." >"ChangeLog.tmp" || exit
if test -s "ChangeLog.tmp"; then
# Fix up bug references.
# This would be better as eg a --transform option to gitlog-to-changelog,
# but... effort. FIXME does not handle rare cases like:
# Fixes: debbugs:19434 debbugs:19519
sed 's/ Fixes: \(debbugs:\|bug#\)\([0-9][0-9]*\)/ (Bug#\2)/' \
"ChangeLog.tmp" > "ChangeLog.tmp2"
mv "ChangeLog.tmp2" "ChangeLog.tmp"
# Find the years covered by the generated ChangeLog, so that
# a proper copyright notice can be output.
years=`
sed -n 's/^\([0-9][0-9]*\).*/\1/p' "ChangeLog.tmp" |
sort -nu
`
start_year=
end_year=
for year in $years; do
: ${start_year:=$year}
end_year=$year
done
if test "$start_year" = "$end_year"; then
year_range=$start_year
else
year_range=$start_year-$end_year
fi
# Append a proper copyright notice.
sed -n '
1i\
/^See ChangeLog.[0-9]* for earlier/,${
s/ChangeLog\.[0-9]*/ChangeLog.'$nmax'/
s/\(Copyright[ (C)]*\)[0-9]*-[0-9]*/\1'"$year_range"'/
p
}
' <ChangeLog.$nmax >>"ChangeLog.tmp" || exit
fi
# Install the generated ChangeLog.
test "$output" = "ChangeLog.tmp" || mv "ChangeLog.tmp" "$output"
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