Extract version number passed set '{java-version}'

When the version number string is multi-digits ex: openjdk11
"${SET_JDK_VERSION: -1}" returns '1' which is incorrect.

The change fixes version number extraction for the string
passed to env variable $SET_JDK_VERSION.

Also update the regex to handle values with special chars.

Issue: RELENG-1853
Change-Id: I52c49fec007bad70d4a42d4c20a45b35fec3997c
Signed-off-by: Anil Belur <abelur@linuxfoundation.org>

diff --git a/shell/update-java-alternatives.sh b/shell/update-java-alternatives.sh
index a53cc0a..f85e201 100644 (file)
--- a/shell/update-java-alternatives.sh
+++ b/shell/update-java-alternatives.sh
@@ -20,7 +20,7 @@ update-java-redhat() {
     elif [[ "${SET_JDK_VERSION//[a-zA-Z]/}" = "10" ]]; then
         export JAVA_HOME="/opt/jdk-10.0.2"
     else
-        export JAVA_HOME="/usr/lib/jvm/java-1.${SET_JDK_VERSION//[a-zA-Z]/}.0-openjdk"
+        export JAVA_HOME="/usr/lib/jvm/java-1.${SET_JDK_VERSION//[a-zA-Z:-]/}.0-openjdk"
     fi
     sudo /usr/sbin/alternatives --install /usr/bin/java java "${JAVA_HOME}/bin/java" 1
     sudo /usr/sbin/alternatives --install /usr/bin/javac javac "${JAVA_HOME}/bin/javac" 1
@@ -32,7 +32,7 @@ update-java-redhat() {
 }
 
 update-java-ubuntu() {
-    export JAVA_HOME="/usr/lib/jvm/java-${SET_JDK_VERSION: -1}-openjdk-amd64"
+    export JAVA_HOME="/usr/lib/jvm/java-${SET_JDK_VERSION//[a-zA-Z:-]/}-openjdk-amd64"
     sudo /usr/bin/update-alternatives --install /usr/bin/java java "${JAVA_HOME}/bin/java" 1
     sudo /usr/bin/update-alternatives --install /usr/bin/javac javac "${JAVA_HOME}/bin/javac" 1
     sudo /usr/bin/update-alternatives --install /usr/lib/jvm/java-openjdk java_sdk_openjdk "${JAVA_HOME}" 1