[PATCH 3/3] scripts/ci_build: Make CI script more generic

[Alexander Smirnov <asmirnov@ilbers.de>]

Make this script more generic, so it could be used by any CI and by user
as well. Also add parameter to specify build folder.

Usage:
  ci_build [-v] -b BUILD_DIR

And this command will build all the default Isar images.

Signed-off-by: Alexander Smirnov <asmirnov@ilbers.de>
---
 scripts/ci_build.sh | 66 ++++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 55 insertions(+), 11 deletions(-)

diff --git a/scripts/ci_build.sh b/scripts/ci_build.sh
index e941f8c..6b5871e 100755
--- a/scripts/ci_build.sh
+++ b/scripts/ci_build.sh
@@ -1,28 +1,72 @@
-# Script for Jenkins build
+# Script for CI system build
 #
 # Alexander Smirnov <asmirnov@ilbers.de>
-# Copyright (c) 2016-2017 ilbers GmbH
+# Copyright (c) 2016-2018 ilbers GmbH
 
 #!/bin/sh
 
+ES_BUG=3
+
 # Export $PATH to use 'parted' tool
 export PATH=$PATH:/sbin
 
-# Get parameters from the command line
-WORKSPACE=$1
-GIT_COMMIT=$2
-
 # Go to Isar root
 cd $(dirname $0)/..
 
-# Setup build folder for current revision
-if [ ! -d /build/$WORKSPACE/$GIT_COMMIT ]; then
-        mkdir -p /build/$WORKSPACE/$GIT_COMMIT
+# Start build in Isar tree by default
+BUILD_DIR=./build
+
+show_help() {
+    echo "This script builds all the default Isar images."
+    echo
+    echo "Usage:"
+    echo "    $0 [params]"
+    echo
+    echo "Parameters:"
+    echo "    -b, --build BUILD_DIR set path to build directory. If not set,"
+    echo "                          the build will be started in current path."
+    echo "    -v, --verbose         set verbose level of bitbake output."
+    echo "    --help                display this message and exit."
+    echo
+    echo "Exit status:"
+    echo " 0  if OK,"
+    echo " 3  if invalid parameters are passed."
+}
+
+# Parse command line to get user configuration
+while [ $# -gt 0 ]
+do
+    key="$1"
+
+    case $key in
+    -h|--help)
+        show_help
+        exit 0
+        ;;
+    -b|--build)
+        BUILD_DIR="$2"
+        shift
+        ;;
+    -v|--verbose)
+        BB_ARGS="$BB_ARGS -v"
+        ;;
+    *)
+        echo "error: invalid parameter '$key', please try '--help' to get list of supported parameters"
+        exit $ES_BUG
+        ;;
+    esac
+
+    shift
+done
+
+# Setup build folder for the current build
+if [ ! -d $BUILD_DIR ]; then
+        mkdir -p $BUILD_DIR
 fi
-source isar-init-build-env /build/$WORKSPACE/$GIT_COMMIT
+source isar-init-build-env $BUILD_DIR
 
 # Start build for all possible configurations
-bitbake -v \
+bitbake $BB_ARGS \
         multiconfig:qemuarm-wheezy:isar-image-base \
         multiconfig:qemuarm-jessie:isar-image-base \
         multiconfig:qemuarm-stretch:isar-image-base \
-- 
2.1.4