Merge "Copy isEmailAddress"

import android.annotation.UnsupportedAppUsage;

import android.os.Build;

import android.provider.Telephony;

import android.telephony.SmsMessage;

import android.text.TextUtils;

import android.util.Patterns;

import com.android.internal.telephony.GsmAlphabet.TextEncodingDetails;

import java.text.BreakIterator;

import java.util.Arrays;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

/**

 * Base class declaring the specific methods and members for SmsMessage.

 * {@hide}

 */

public abstract class SmsMessageBase {

    // Copied from Telephony.Mms.NAME_ADDR_EMAIL_PATTERN

    public static final Pattern NAME_ADDR_EMAIL_PATTERN =

            Pattern.compile("\\s*(\"[^\"]*\"|[^<>\"]+)\\s*<([^<>]+)>\\s*");

    /** {@hide} The address of the SMSC. May be null */

    @UnsupportedAppUsage

    protected String mScAddress;

        }

    }

    private static String extractAddrSpec(String messageHeader) {

        Matcher match = NAME_ADDR_EMAIL_PATTERN.matcher(messageHeader);

        if (match.matches()) {

            return match.group(2);

        }

        return messageHeader;

    }

    /**

     * Returns true if the message header string indicates that the message is from a email address.

     *

     * @param messageHeader message header

     * @return {@code true} if it's a message from an email address, {@code false} otherwise.

     */

    public static boolean isEmailAddress(String messageHeader) {

        if (TextUtils.isEmpty(messageHeader)) {

            return false;

        }

        String s = extractAddrSpec(messageHeader);

        Matcher match = Patterns.EMAIL_ADDRESS.matcher(s);

        return match.matches();

    }

    /**

     * Try to parse this message as an email gateway message

     * There are two ways specified in TS 23.040 Section 3.8 :

        if (parts.length < 2) return;

        mEmailFrom = parts[0];

        mEmailBody = parts[1];

         mIsEmail = Telephony.Mms.isEmailAddress(mEmailFrom);

        mIsEmail = isEmailAddress(mEmailFrom);

    }

    /**