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ceph/bin/git-archive-all.sh

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#!/usr/bin/env bash
#
# File: git-archive-all.sh
#
# Description: A utility script that builds an archive file(s) of all
# git repositories and submodules in the current path.
# Useful for creating a single tarfile of a git super-
# project that contains other submodules.
#
# Examples: Use git-archive-all.sh to create archive distributions
# from git repositories. To use, simply do:
#
# cd $GIT_DIR; git-archive-all.sh
#
# where $GIT_DIR is the root of your git superproject.
#
# License: GPL3
#
###############################################################################
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
###############################################################################
# DEBUGGING
set -e
set -C # noclobber
# TRAP SIGNALS
trap 'cleanup' QUIT EXIT
# For security reasons, explicitly set the internal field separator
# to newline, space, tab
OLD_IFS=$IFS
IFS='
'
function cleanup () {
rm -rf $TMPDIR
IFS="$OLD_IFS"
}
function usage () {
echo "Usage is as follows:"
echo
echo "$PROGRAM <--version>"
echo " Prints the program version number on a line by itself and exits."
echo
echo "$PROGRAM <--usage|--help|-?>"
echo " Prints this usage output and exits."
echo
echo "$PROGRAM [--format <fmt>] [--prefix <path>] [--verbose|-v] [--separate|-s]"
echo " [--tree-ish|-t <tree-ish>] [--ignore pattern] [output_file]"
echo " Creates an archive for the entire git superproject, and its submodules"
echo " using the passed parameters, described below."
echo
echo " If '--format' is specified, the archive is created with the named"
echo " git archiver backend. Obviously, this must be a backend that git archive"
echo " understands. The format defaults to 'tar' if not specified."
echo
echo " If '--prefix' is specified, the archive's superproject and all submodules"
echo " are created with the <path> prefix named. The default is to not use one."
echo
echo " If '--separate' or '-s' is specified, individual archives will be created"
echo " for each of the superproject itself and its submodules. The default is to"
echo " concatenate individual archives into one larger archive."
echo
echo " If '--tree-ish' is specified, the archive will be created based on whatever"
echo " you define the tree-ish to be. Branch names, commit hash, etc. are acceptable."
echo " Defaults to HEAD if not specified. See git archive's documentation for more"
echo " information on what a tree-ish is."
echo
echo " If '--ignore' is specified, we will filter out any submodules that"
echo " match the specified pattern."
echo
echo " If 'output_file' is specified, the resulting archive is created as the"
echo " file named. This parameter is essentially a path that must be writeable."
echo " When combined with '--separate' ('-s') this path must refer to a directory."
echo " Without this parameter or when combined with '--separate' the resulting"
echo " archive(s) are named with a dot-separated path of the archived directory and"
echo " a file extension equal to their format (e.g., 'superdir.submodule1dir.tar')."
echo
echo " If '--verbose' or '-v' is specified, progress will be printed."
}
function version () {
echo "$PROGRAM version $VERSION"
}
# Internal variables and initializations.
readonly PROGRAM=`basename "$0"`
readonly VERSION=0.2
OLD_PWD="`pwd`"
TMPDIR=`mktemp -d "${TMPDIR:-/tmp}/$PROGRAM.XXXXXX"`
TMPFILE=`mktemp "$TMPDIR/$PROGRAM.XXXXXX"` # Create a place to store our work's progress
TOARCHIVE=`mktemp "$TMPDIR/$PROGRAM.toarchive.XXXXXX"`
OUT_FILE=$OLD_PWD # assume "this directory" without a name change by default
SEPARATE=0
VERBOSE=0
TARCMD=tar
[[ $(uname) == "Darwin" ]] && TARCMD=gnutar
FORMAT=tar
PREFIX=
TREEISH=HEAD
IGNORE=
# RETURN VALUES/EXIT STATUS CODES
readonly E_BAD_OPTION=254
readonly E_UNKNOWN=255
# Process command-line arguments.
while test $# -gt 0; do
case $1 in
--format )
shift
FORMAT="$1"
shift
;;
--prefix )
shift
PREFIX="$1"
shift
;;
--separate | -s )
shift
SEPARATE=1
;;
--tree-ish | -t )
shift
TREEISH="$1"
shift
;;
--ignore )
shift
IGNORE="$1"
shift
;;
--version )
version
exit
;;
--verbose | -v )
shift
VERBOSE=1
;;
-? | --usage | --help )
usage
exit
;;
-* )
echo "Unrecognized option: $1" >&2
usage
exit $E_BAD_OPTION
;;
* )
break
;;
esac
done
if [ ! -z "$1" ]; then
OUT_FILE="$1"
shift
fi
# Validate parameters; error early, error often.
if [ $SEPARATE -eq 1 -a ! -d $OUT_FILE ]; then
echo "When creating multiple archives, your destination must be a directory."
echo "If it's not, you risk being surprised when your files are overwritten."
exit
elif [ `git config -l | grep -q '^core\.bare=false'; echo $?` -ne 0 ]; then
echo "$PROGRAM must be run from a git working copy (i.e., not a bare repository)."
exit
fi
# Create the superproject's git-archive
if [ $VERBOSE -eq 1 ]; then
echo -n "creating superproject archive..."
fi
git archive --format=$FORMAT --prefix="$PREFIX" $TREEISH > $TMPDIR/$(basename "$(pwd)").$FORMAT
if [ $VERBOSE -eq 1 ]; then
echo "done"
fi
echo $TMPDIR/$(basename "$(pwd)").$FORMAT >| $TMPFILE # clobber on purpose
superfile=`head -n 1 $TMPFILE`
if [ $VERBOSE -eq 1 ]; then
echo -n "looking for subprojects..."
fi
# find all '.git' dirs, these show us the remaining to-be-archived dirs
# we only want directories that are below the current directory
find . -mindepth 2 -name '.git' -type d -print | sed -e 's/^\.\///' -e 's/\.git$//' >> $TOARCHIVE
# as of version 1.7.8, git places the submodule .git directories under the superprojects .git dir
# the submodules get a .git file that points to their .git dir. we need to find all of these too
find . -mindepth 2 -name '.git' -type f -print | xargs grep -l "gitdir" | sed -e 's/^\.\///' -e 's/\.git$//' >> $TOARCHIVE
if [ -n "$IGNORE" ]; then
cat $TOARCHIVE | grep -v $IGNORE > $TOARCHIVE.new
mv $TOARCHIVE.new $TOARCHIVE
fi
if [ $VERBOSE -eq 1 ]; then
echo "done"
echo " found:"
cat $TOARCHIVE | while read arch
do
echo " $arch"
done
fi
if [ $VERBOSE -eq 1 ]; then
echo -n "archiving submodules..."
fi
while read path; do
TREEISH=$(git submodule | grep "^ .*${path%/} " | cut -d ' ' -f 2) # git submodule does not list trailing slashes in $path
cd "$path"
git archive --format=$FORMAT --prefix="${PREFIX}$path" ${TREEISH:-HEAD} > "$TMPDIR"/"$(echo "$path" | sed -e 's/\//./g')"$FORMAT
if [ $FORMAT == 'zip' ]; then
# delete the empty directory entry; zipped submodules won't unzip if we don't do this
zip -d "$(tail -n 1 $TMPFILE)" "${PREFIX}${path%/}" >/dev/null # remove trailing '/'
fi
echo "$TMPDIR"/"$(echo "$path" | sed -e 's/\//./g')"$FORMAT >> $TMPFILE
cd "$OLD_PWD"
done < $TOARCHIVE
if [ $VERBOSE -eq 1 ]; then
echo "done"
fi
if [ $VERBOSE -eq 1 ]; then
echo -n "concatenating archives into single archive..."
fi
# Concatenate archives into a super-archive.
if [ $SEPARATE -eq 0 ]; then
if [ $FORMAT == 'tar' ]; then
sed -e '1d' $TMPFILE | while read file; do
$TARCMD --concatenate -f "$superfile" "$file" && rm -f "$file"
done
elif [ $FORMAT == 'zip' ]; then
sed -e '1d' $TMPFILE | while read file; do
# zip incorrectly stores the full path, so cd and then grow
cd `dirname "$file"`
zip -g "$superfile" `basename "$file"` && rm -f "$file"
done
cd "$OLD_PWD"
fi
echo "$superfile" >| $TMPFILE # clobber on purpose
fi
if [ $VERBOSE -eq 1 ]; then
echo "done"
fi
if [ $VERBOSE -eq 1 ]; then
echo -n "moving archive to $OUT_FILE..."
fi
while read file; do
mv "$file" "$OUT_FILE"
done < $TMPFILE
if [ $VERBOSE -eq 1 ]; then
echo "done"
fi
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