package?cn.kbyte.utils.phone;

import?java.io.ByteArrayOutputStream;
import?java.io.InputStream;
import?java.nio.ByteBuffer;
import?java.nio.ByteOrder;
import?java.nio.charset.StandardCharsets;
import?java.util.Scanner;

/**
?*?Created?by?fengjiajie?on?16/10/12.
?*/
public?class?PhoneNumberGeo?{

??private?static?final?String[]?PHONE_NUMBER_TYPE?=?{null?“移動“?“聯(lián)通“?“電信“?“電信虛擬運(yùn)營商“?“聯(lián)通虛擬運(yùn)營商“?“移動虛擬運(yùn)營商“};
??private?static?final?int?INDEX_SEGMENT_LENGTH?=?9;
??private?static?final?int?DATA_FILE_LENGTH_HINT?=?3747505;
??private?static?final?String?PHONE_DAT_FILE_PATH?=?“phone-number-geo/phone.dat“;

??private?static?byte[]?dataByteArray;
??private?static?int?indexAreaOffset;
??private?static?int?phoneRecordCount;

??private?ByteBuffer?byteBuffer;

??private?static?synchronized?void?initData（）?{
????if?（dataByteArray?==?null）?{
??????ByteArrayOutputStream?byteData?=?new?ByteArrayOutputStream（DATA_FILE_LENGTH_HINT）;
??????byte[]?buffer?=?new?byte[1024];

??????int?readBytesLength;
??????try?（InputStream?inputStream?=?PhoneNumberGeo.class.getClassLoader（）.getResourceAsStream（PHONE_DAT_FILE_PATH））?{
????????while?（（readBytesLength?=?inputStream.read（buffer））?!=?-1）?{
??????????byteData.write（buffer?0?readBytesLength）;
????????}
??????}?catch?（Exception?e）?{
????????System.err.println（“Can‘t?find?phone.dat?in?classpath:?“?+?PHONE_DAT_FILE_PATH）;
????????e.printStackTrace（）;
????????throw?new?RuntimeException（e）;
??????}

??????dataByteArray?=?byteData.toByteArray（）;

??????ByteBuffer?byteBuffer?=?ByteBuffer.wrap（dataByteArray）;
??????byteBuffer.order（ByteOrder.LITTLE_ENDIAN）;
??????int?dataVersion?=?byteBuffer.getInt（）;
??????indexAreaOffset?=?byteBuffer.getInt（）;
??????phoneRecordCount?=?（dataByteArray.length?-?indexAreaOffset）?/?INDEX_SEGMENT_LENGTH;

??????//?print?data?version
??????//?System.out.println（dataVersion）;
??????//?print?record?count
??????//?System.out.println（phoneRecordCount）;
????}
??}

??public?PhoneNumberGeo（）?{
????initData（）;

????byteBuffer?=?ByteBuffer.wrap（dataByteArray）;
????byteBuffer.order（ByteOrder.LITTLE_ENDIAN）;
??}

??public?PhoneNumberInfo?lookup（String?phoneNumber）?{
????if?（phoneNumber?==?null?||?phoneNumber.length（）?>?11?||?phoneNumber.length（）???????return?null;
????}
????int?phoneNumberPrefix;
????try?{
??????phoneNumberPrefix?=?Integer.parseInt（phoneNumber.substring（0?7））;
????}?catch?（Exception?e）?{
??????return?null;
????}
????int?left?=?0;
????int?right?=?phoneRecordCount;
????while?（left?<=?right）?{
??????int?middle?=?（left?+?right）?>>?1;
??????int?currentOffset?=?indexAreaOffset?+?middle?*?INDEX_SEGMENT_LENGTH;
??????if?（currentOffset?>=?dataByteArray.length）?{
????????return?null;
??????}

??????byteBuffer.position（currentOffset）;
??????int?currentPrefix?=?byteBuffer.getInt（）;
??????if?（currentPrefix?>?phoneNumberPrefix）?{
????????right?=?middle?-?1;
??????}?else?if?（currentPrefix?????????left?=?middle?+?1;
??????}?else?{
????????int?infoBeginOffset?=?byteBuffer.getInt（）;
??

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件????????1026??2019-08-12?15:30??pom.xml
?????目錄???????????0??2019-08-12?15:25??src\
?????目錄???????????0??2019-08-12?15:25??src\main\
?????目錄???????????0??2019-08-12?15:25??src\main\java\
?????目錄???????????0??2019-08-12?15:25??src\main\java\cn\
?????目錄???????????0??2019-08-12?15:25??src\main\java\cn\kbyte\
?????目錄???????????0??2019-08-12?15:25??src\main\java\cn\kbyte\utils\
?????目錄???????????0??2019-08-12?15:44??src\main\java\cn\kbyte\utils\phone\
?????文件????????4608??2019-08-12?15:44??src\main\java\cn\kbyte\utils\phone\PhoneNumberGeo.java
?????文件????????1390??2018-10-30?19:12??src\main\java\cn\kbyte\utils\phone\PhoneNumberInfo.java
?????目錄???????????0??2019-08-12?15:25??src\main\resources\
?????目錄???????????0??2019-08-12?15:25??src\main\resources\phone-number-geo\
?????文件?????3870885??2019-08-12?15:03??src\main\resources\phone-number-geo\phone.dat
?????目錄???????????0??2019-08-12?15:25??src\test\
?????目錄???????????0??2019-08-12?15:25??src\test\java\
?????目錄???????????0??2019-08-12?15:25??src\test\java\cn\
?????目錄???????????0??2019-08-12?15:25??src\test\java\cn\kbyte\
?????目錄???????????0??2019-08-12?15:25??src\test\java\cn\kbyte\utils\
?????目錄???????????0??2019-08-12?16:02??src\test\java\cn\kbyte\utils\phone\
?????文件????????1170??2019-08-12?16:02??src\test\java\cn\kbyte\utils\phone\PhoneNumberGeoTest.java