Simplify RST building

Use a script to build and copy RST guides around instead of duplicating
the same lines every time.

Use script in build-user-guides.sh for now. A follow-up patch shall
change further places.

This script will eventually be moved over to openstack-doc-tools, let's
first evolve it here and check that we cover all use cases.

Change-Id: I753e742bf77b2d6f5acf2f909d62af3dd422832a

tools/build-rst.sh

@@ -0,0 +1,78 @@
+#!/bin/bash -xe
+#
+# 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.
+
+DIRECTORY=$1
+
+if [ -z "$DIRECTORY" ] ; then
+    echo "usage $0 DIRECTORY options"
+    echo "Options are:"
+    echo "--glossary: Build glossary"
+    echo "--tag TAG: Use given tag for building"
+    echo "--target TARGET: Copy files to publish-docs/$TARGET"
+    echo "--build BUILD: Name of build directory"
+    exit 1
+fi
+
+GLOSSARY=0
+TARGET=""
+TAG=""
+TAG_OPT=""
+BUILD=""
+
+while [[ $# > 1 ]] ; do
+    option="$1"
+    case $option in
+        --glossary)
+            GLOSSARY=1
+            ;;
+        --tag)
+            TAG="$2"
+            TAG_OPT="-t $2"
+            shift
+            ;;
+        --target)
+            TARGET="$2"
+            shift
+            ;;
+        --build)
+            BUILD="$2"
+            shift
+            ;;
+    esac
+    shift
+done
+
+
+if [ "$GLOSSARY" -eq "1" ] ; then
+    echo "Generating Glossary"
+    tools/glossary2rst.py $DIRECTORY/source/glossary.rst
+fi
+
+if [ -z "BUILD" ] ; then
+    if [ -z "$TAG" ] ; then
+        BUILD_DIR="$DIRECTORY/build/html"
+    else
+        BUILD_DIR="$DIRECTORY/build-${TAG}/html"
+    fi
+else
+    BUILD_DIR="$DIRECTORY/$BUILD/html"
+fi
+
+sphinx-build -E -W $TAG_OPT $DIRECTORY/source $BUILD_DIR
+
+# Copy RST
+if [ "$TARGET" != "" ] ; then
+    mkdir -p publish-docs/$TARGET
+    rsync -a $BUILD_DIR publish-docs/$TARGET
+fi

tools/build-user-guides.sh

@@ -1,16 +1,8 @@
 #!/bin/sh -e
 
-echo "Generating Glossary"
+tools/build-rst.sh doc/user-guides --glossary --tag user_only --build build
-echo "==================="
+# No need to build the glossary again here.
-tools/glossary2rst.py doc/user-guides/source/glossary.rst
+tools/build-rst.sh doc/user-guides --tag admin_only --build build-admin
-echo "Done."
-echo ""
-echo "Building End User Guide"
-echo "======================="
-sphinx-build -t user_only -E -W doc/user-guides/source/ doc/user-guides/build/html
-echo "Building Admin User Guide"
-echo "========================="
-sphinx-build -t admin_only -E -W doc/user-guides/source/ doc/user-guides/build-admin/html
 
 # Cleanup: Rename index-html to index everywhere
 mv doc/user-guides/build-admin/html/index-admin.html doc/user-guides/build-admin/html/index.html