zhoulifu

import java.util.Objects;
import java.util.regex.Pattern;

class IPRangeExpander {
    private static final Pattern IPV4_PATTERN = Pattern.compile("^(([1-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.){1}(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.){2}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$");

    public void expand(String from, String to) {
        if (from == null || to == null) {
            throw new IllegalArgumentException(
                    "Invalid ip range: from " + from + " to " + to);

zhoulifu

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Objects;

public class PrettyXmlInputStream extends InputStream {
    private static final byte[] EMPTY_BYTES = new byte[0];
    private static final byte[] CLOSE_TAG_PREFIX = new byte[]{'<', '/'};
    private static final byte[] CDATA_PREFIX = "[CDATA[".getBytes();
    private static final byte[] CDATA_SUFFIX = new byte[]{']', '>'};

zhoulifu

import java.util.Arrays;
import java.util.Objects;

public class AsciiSequence implements CharSequence {
    private static final AsciiSequence EMPTY_STRING =
            new AsciiSequence(new byte[0]);

    final byte[] value;
    final int offset;
    final int length;

zhoulifu

public abstract class TerminableThread extends Thread {

    private volatile boolean stopRequested;
    private volatile boolean stopped;

    public boolean isStopRequested() {
        return stopRequested;
    }

    public boolean isStopped() {

zhoulifu

import static java.lang.Math.abs;
import static java.lang.Math.acos;
import static java.lang.Math.cos;
import static java.lang.Math.sin;

import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;

public class GeographyUtil {

zhoulifu

alias sbr='mvn clean && mvn spring-boot:run'
alias nem='emacs -nw'
alias ics='dpkg -l|grep'
alias rm='rm -i'
alias psef='ps -ef|grep'
alias gdd='git difftool -t meld -d'
alias psport='netstat -atnl|grep -P'
alias mcp='mvn clean package'
alias mcpnt='mcp -Dmaven.test.skip=true'
alias mcc='mvn clean compile'

zhoulifu

#!/bin/bash                                                                                               
for STYLE in 0 1 2 3 4 5 6 7; do
  for FG in 30 31 32 33 34 35 36 37; do
    for BG in 40 41 42 43 44 45 46 47; do
      CTRL="\033[${STYLE};${FG};${BG}m"
      echo -en "${CTRL}"
      echo -n "${STYLE};${FG};${BG}"
      echo -en "\033[0m"
    done
    echo

zhoulifu

import java.io.File;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.ssl.DefaultHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.CloseableHttpClient;

zhoulifu

#!/bin/bash

_echo() {
    echo
#    echo $1
    echo $'\e[0;33m'"$1"$'\e[0m'
}

_check() {
    [ $1 -eq 0 ] || exit $1

zhoulifu

--- http://www.lua.org/pil/9.html                                                                        

function producer()
   return coroutine.create(
      function()
         while true do
            local v = io.read()
            coroutine.yield(v)
            if not v then break end
         end