WIP: add a run.sh script and update the README.

README.md

@@ -12,14 +12,12 @@ $ /cvmfs/container.ihep.ac.cn/bin/hep_container shell SL6
 Before run following commands, please make sure you setup the CVMFS:
 
 ```
-$ source /cvmfs/cepcsw.ihep.ac.cn/prototype/releases/externals/97.0.2/setup.sh
 $ git clone git@github.com:cepc/CEPCSW.git
 $ cd CEPCSW
 $ git checkout master # branch name
-$ mkdir build && cd build
-$ cmake .. -DHOST_BINARY_TAG=${BINARY_TAG}
-$ make
-$ ./run gaudirun.py '$EXAMPLESROOT/options/helloalg.py'
+$ source setup.sh
+$ ./build.sh
+$ ./run.sh Examples/options/helloalg.py
 ```
 
 ## Packages

run.sh

+#!/bin/bash
+##############################################################################
+# Run script for CEPCSW:
+# - run a simple job
+#
+# Usage:
+# $ ./run.sh Examples/options/helloalg.py
+# or:
+# $ 
+#
+# Author: Tao Lin <lintao@ihep.ac.cn>
+##############################################################################
+
+function info:() {
+    echo "INFO: $*" 1>&2
+}
+
+function error:() {
+    echo "ERROR: $*" 1>&2
+}
+
+function check-cepcsw-envvar() {
+    # CEPCSWEXTERNAL is defined in /cvmfs/cepcsw.ihep.ac.cn/prototype/releases/externals/
+    if [ -z "${CEPCSWEXTERNAL}" ]; then
+        error: "The CEPCSW is not setup. Please source setup.sh."
+        return 1
+    fi
+}
+
+function build-dir() {
+    local blddir=build
+
+    # If detect the extra env var, append it to the build dir
+    if [ -n "${lcg_version}" ]; then
+        blddir=${blddir}.${lcg_version}
+    fi
+    if [ -n "${lcg_platform}" ]; then
+        blddir=${blddir}.${lcg_platform}
+    fi
+
+    echo $blddir
+}
+
+function check-working-builddir() {
+    local blddir=$(build-dir)
+    if [ ! -d "$blddir" ]; then
+        mkdir $blddir || {
+            error: "Failed to create $blddir"
+            return 1
+        }
+    fi
+}
+
+function run-job() {
+    local blddir=$(build-dir)
+
+    $blddir/run gaudirun.py $*
+}
+
+##############################################################################
+# Parse the command line options
+##############################################################################
+
+# The current default platform
+lcg_platform=x86_64-slc6-gcc8-opt
+lcg_version=97.0.2
+
+check-cepcsw-envvar || exit -1
+
+check-working-builddir || exit -1
+
+run-job $* || exit -1