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|
#!/usr/bin/env bash
#==========================================================================
#
# Copyright Insight Software Consortium
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0.txt
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#==========================================================================*/
USAGE="[<remote>] [--no-topic] [--no-data] [--keep-data] [--dry-run] [--]"
OPTIONS_SPEC=
SUBDIRECTORY_OK=Yes
. "$(git --exec-path)/git-sh-setup"
egrep-q() {
egrep "$@" >/dev/null 2>/dev/null
}
data_commit() {
# Get data refs. Skip if none.
test $# != 0 || return 0
state=$(git for-each-ref "$@") || return
test -n "$state" || return 0
# Convert each data ref to an index entry.
index=$(
echo "$state" |
while read obj type refname; do
# Take blobs with valid ref names.
name="${refname#refs/data/}"
if echo "$type,$name" | egrep-q '^blob,[A-Za-z0-9-]+/[0-9A-Fa-f]+$'; then
# Place the blob at the path named by the ref.
echo "100644 $obj 0 $name"
else
# Warn about unprocessed refs.
echo "unknown $refname" 1>&2
fi
done
) || return
test -n "$index" || return 0
# Convert the index into a tree.
tree=$(
GIT_INDEX_FILE="$GIT_DIR/tmp-index.$$.$RANDOM" &&
export GIT_INDEX_FILE &&
trap "rm -f '$GIT_INDEX_FILE'" EXIT &&
rm -f "$GIT_INDEX_FILE" &&
echo "$index" | git update-index --index-info &&
git write-tree
) &&
# Store the tree in a commit object.
echo 'data' | git commit-tree "$tree"
}
data_remove() {
test -z "$dry_run" || return 0
git ls-tree -r "$1" |
while read mode type obj name; do
# Remove ref only if it still has the data we expected.
git update-ref -d "refs/data/$name" "$obj" 2>/dev/null || true
done
}
data_report_and_remove() {
if test -n "$keep_data"; then
action="kept"
else
action="removed"
data_remove "$1" || true
fi &&
echo "Pushed refs/data and $action local copy:" &&
git ls-tree --name-only -r "$1" | sed "s/^/ /"
}
data_push_refspec() {
echo "$1:refs/data/commits/$1"
}
data_refs() {
git rev-list "$@" |
git diff-tree --no-commit-id --root -c -r --diff-filter=AM --stdin |
egrep '\.(md5)$' |
# read :srcmode dstmode srcobj dstobj status file
while read _ _ _ obj _ file; do
# Identify the hash algorithm used.
case "$file" in
*.md5) algo=MD5 ; validate="^[0-9a-fA-F]{32}$" ;;
*) continue ;;
esac
# Load and validate the hash.
if hash=$(git cat-file blob $obj 2>/dev/null) &&
echo "$hash" | egrep-q "$validate"; then
echo "refs/data/$algo/$hash"
fi
done
}
#-----------------------------------------------------------------------------
remote=''
refspecs=''
keep_data=''
no_topic=''
no_data=''
dry_run=''
# Parse command line options.
while test $# != 0; do
case "$1" in
--keep-data) keep_data=1 ;;
--no-topic) no_topic=1 ;;
--no-data) no_data=1 ;;
--dry-run) dry_run=--dry-run ;;
--) shift; break ;;
-*) usage ;;
*) test -z "$remote" || usage ; remote="$1" ;;
esac
shift
done
test $# = 0 || usage
# Default remote.
test -n "$remote" || remote="gerrit"
if test -z "$no_topic"; then
# Identify and validate the topic branch name.
head="$(git symbolic-ref HEAD)" && topic="${head#refs/heads/}" || topic=''
if test -z "$topic" -o "$topic" = "master"; then
die 'Please name your topic:
git checkout -b descriptive-name'
fi
# The topic branch will be pushed by name.
refspecs="HEAD:refs/for/master/$topic $refspecs"
fi
# Fetch the current upstream master branch head.
# This helps computation of a minimal pack to push.
echo "Fetching $remote master"
fetch_out=$(git fetch "$remote" master 2>&1) || die "$fetch_out"
master=$(git rev-parse FETCH_HEAD) || exit
if test -z "$no_data"; then
# Create a commit containing the data to push.
data_refs=$(data_refs $master..) &&
data=$(data_commit $data_refs) || die 'Failed to create data commit'
if test -n "$data"; then
refspecs="$(data_push_refspec "$data") $refspecs"
fi
else
data=''
fi
# Exit early if we have nothing to push.
if test -z "$refspecs"; then
echo 'Nothing to push!'
exit 0
fi
# Push. Save output and exit code.
echo "Pushing to $remote"
push_stdout=$(git push --porcelain $dry_run "$remote" $refspecs); push_exit=$?
echo "$push_stdout"
# Check if data were pushed successfully.
if test -n "$data" &&
echo "$push_stdout" | egrep-q "^[*=+] $data"; then
data_report_and_remove "$data"
fi
# Reproduce the push exit code.
exit $push_exit
|
