Review

finding-16

/mubench/checkouts/asterisk-java/304421c/build/src/main/java/org/asteriskjava/fastagi/ScriptEngineMappingStrategy.java

getExtension(String)

class ScriptEngineMappingStrategy {
    /**
     * Returns the extension (the part after the last ".") of the given script.
     *
     * @param scriptName the name of the script to return the extension of.
     * @return the extension of the script or <code>null</code> if there is no extension.
     */
    protected static String getExtension(String scriptName)
    {
        if (scriptName == null)
        {
            return null;
        }

        int filePosition = scriptName.lastIndexOf("/");
        String fileName;

        if (scriptName.lastIndexOf("\\") > filePosition)
        {
            filePosition = scriptName.lastIndexOf("\\");
        }

        if (filePosition >= 0)
        {
            fileName = scriptName.substring(filePosition + 1);
        }
        else
        {
            fileName = scriptName;
        }

        final int extensionPosition = fileName.lastIndexOf(".");
        if (extensionPosition >= 0)
        {
            return fileName.substring(extensionPosition + 1);
        }

        return null;
    }

}