package com.temp.client.foundation.support.useragent.nonpublic;

import com.temp.client.foundation.support.useragent.*;

/**
 * Represents IE - supporting code the UserAgent
 *
 * @author georgs
 */
public class UserAgentIE extends UserAgent {
    private boolean mLegacyIE;

    public UserAgentIE() {
        super( BrowserFamily.IE, "" );
        int zVersion = determineSpecificVersion();
        mLegacyIE = (zVersion < 9);
        mSpecific = IE_PREFIX + zVersion;
    }

    @Override
    public boolean isLegacyIE() {
        return mLegacyIE;
    }

    // ; MSIE 6.0;
    // 01234567890
    private static int determineSpecificVersion() {
        String zUserAgent = getBrowserUserAgent();
        int atStart = zUserAgent.indexOf( "; MSIE " ) + 7;
        int atEnd = zUserAgent.indexOf( ".0;", atStart );
        if ( (atStart > 6) && (atEnd != -1) && (atEnd <= (atStart + 2)) ) { // Note: this will only work up to version 99!
            try {
                return Integer.parseInt( zUserAgent.substring( atStart, atEnd ) );
            }
            catch ( NumberFormatException e ) {
                // Really? Then Assume the default
            }
        }
        return 8;
    }
}