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#!/bin/bash
# Copyright 2016 The Bazel Authors. All rights reserved.
#
# 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
#
# 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.
set -eu
readonly WORKING_DIR=$(mktemp -d)
: ${HOST:=localhost}
: ${PORT:=12345}
TARGET=
SERVING_PREFIX=
usage() {
cat <<EOF
Usage: $0 [--port 12345] [--target DIR [PREFIX]] [--share]
--port [port]
Builds docs and starts a web server serving docs on localhost:port. Default
port is 12345.
--target <target directory> [<serving prefix>]
Builds docs as static web pages in <target directory>. Replaces absolute
paths in the resulting HTML with <serving prefix>, or, if it is not
specified, with <target directory>.
--share
Binds jekyll to the machine's hostname, instead of localhost (useful for
review).
--help
This message.
EOF
}
build_tree() {
bazel build //site:jekyll-tree.tar
rm -rf ${WORKING_DIR:-sentinel}/*
tar -xf "$(bazel info bazel-genfiles)/site/jekyll-tree.tar" -C $WORKING_DIR
}
build_static() {
build_tree
TMP_TARGET=$(mktemp -d)
jekyll build --source $WORKING_DIR --destination "$TMP_TARGET"
REPLACEMENT=$(echo $SERVING_PREFIX | sed s/\\//\\\\\\//g)
find $TMP_TARGET -name '*.html' | xargs sed -i s/href=\\\"\\//href=\"$REPLACEMENT\\//g
find $TMP_TARGET -name '*.html' | xargs sed -i s/src=\\\"\\//src=\"$REPLACEMENT\\//g
cp -R $TMP_TARGET/* $TARGET
echo "Static pages copied to $TARGET"
echo "Should be served from $SERVING_PREFIX"
}
build_and_serve() {
build_tree
echo "Serving docs.bazel.build site at $HOST:$PORT"
jekyll serve --host "$HOST" --detach --quiet --port "$PORT" --source "$WORKING_DIR"
}
check() {
which $1 > /dev/null || (echo "$1 not installed. Please install $1."; exit 1)
}
kill_jekyll() {
pid="$(lsof "-tiTCP:$PORT" -sTCP:LISTEN)" || true
if [ ! -z "$pid" ]; then
kill "$pid"
fi
# I found I got bind errors sometimes if I didn't wait a second for the server to
# actually shut down.
sleep 2
}
main() {
check jekyll
old_version="Jekyll 0.11.2"
if expr match "$(jekyll --version)" "$old_version" > /dev/null; then
# The ancient version that apt-get has.
echo "ERROR: Running with an old version of Jekyll, update " \
"to 2.5.3 with \`sudo gem install jekyll -v 2.5.3\`"
exit 1
fi
kill_jekyll
while true; do
build_and_serve
echo "Type q to quit, r to rebuild docs and restart jekyll"
read -n 1 -s user_input
if [ "$user_input" == "q" ]; then
kill_jekyll
echo "Quitting"
exit 0
elif [ "$user_input" == "r" ]; then
kill_jekyll
echo "Rebuilding docs and restarting jekyll"
fi
done
}
while [[ $# -gt 0 ]]
do
key="$1"
case $key in
--port)
PORT="$2"
shift
;;
--share)
HOST="$HOSTNAME"
;;
--target)
TARGET="$2"
shift
SERVING_PREFIX="${2:-}"
build_static
exit 0
;;
--help|help)
usage
exit 0
;;
*)
usage
exit 1
esac
shift
done
cleanup() {
rm -rf $WORKING_DIR
kill_jekyll
}
trap cleanup EXIT
main
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