Removed Oracle libaries from release

Included check for specific classes.
Needs some refactoring for we only want to check for orai18n when database is 11g

Author: pesse

.travis/create_release.sh

@@ -5,6 +5,10 @@ VERSION=`date +%Y%m%d%H%M`
 
 mkdir dist
 mv target/appassembler utPLSQL-cli
+# Remove Oracle libraries du to licensing problems
+rm utPLSQL-cli/lib/ojdbc8*
+rm utPLSQL-cli/lib/orai18n*
+
 zip -r -q dist/utPLSQL-cli-${TRAVIS_BRANCH}-${VERSION}.zip utPLSQL-cli
 
 cat > bintray.json <<EOF

src/main/java/org/utplsql/cli/OracleLibraryChecker.java

@@ -0,0 +1,39 @@
+package org.utplsql.cli;
+
+/** Simple class to check whether needed Oracle libraries are on classpath or not
+ *
+ * @author pesse
+ */
+class OracleLibraryChecker {
+
+    private static boolean classExists( String classFullName ){
+        try
+        {
+            Class.forName(classFullName);
+
+            return true;
+        }
+        catch ( ClassNotFoundException e )
+        {
+            return false;
+        }
+    }
+
+    /** Checks if OJDBC library is on the classpath by searching for oracle.jdbc.OracleDriver class
+     *
+     * @return true or false
+     */
+    public static boolean checkOjdbcExists() {
+        return classExists("oracle.jdbc.OracleDriver");
+    }
+
+    /** Checks if Orai18n library is on the classpath by searching for oracle.i18n.text.OraCharset
+     *
+     * @return true or false
+     */
+    public static boolean checkOrai18nExists() {
+        return classExists("oracle.i18n.text.OraCharset");
+    }
+
+
+}

src/main/java/org/utplsql/cli/RunCommand.java

@@ -78,6 +78,9 @@ public List<String> getTestPaths() {
     }
 
     public int run() throws Exception {
+
+        checkOracleLibrariesExist();
+
         final ConnectionInfo ci = getConnectionInfo();
 
         final List<ReporterOptions> reporterOptionsList = getReporterOptionsList();
@@ -246,4 +249,27 @@ public FileMapperOptions getMapperOptions(List<String> mappingParams, List<Strin
         return mapperOptions;
     }
 
+
+    /** Checks that necessary oracle libraries exist
+     *
+     */
+    private void checkOracleLibrariesExist()
+    {
+        if ( !OracleLibraryChecker.checkOjdbcExists() )
+        {
+            System.out.println("Could not find Oracle JDBC driver in classpath. Please download the jar from Oracle website" +
+                    " and copy it to the 'lib' folder of your utPLSQL-cli installation.");
+            System.out.println("Download from http://www.oracle.com/technetwork/database/features/jdbc/jdbc-ucp-122-3110062.html");
+
+            throw new RuntimeException("Can't run utPLSQL-cli without Oracle JDBC driver");
+        }
+
+        if ( !OracleLibraryChecker.checkOrai18nExists() )
+        {
+            System.out.println("Warning: Could not find Oracle i18n driver in classpath. Depending on your database " +
+                    "version (11g) and used charset utPLSQL-cli might not run properly. It is recommended you download " +
+                    "the i18n driver from the Oracle website and copy it to the 'lib' folder of your utPLSQL-cli installation.");
+            System.out.println("Download from http://www.oracle.com/technetwork/database/enterprise-edition/jdbc-112010-090769.html");
+        }
+    }
 }