Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    /**
     * Validates and processes the given Url
     * @param    url The given Url to process
     * @return   Pre-process Url as string */
    public static String cleanUrl(StringBuilder url) {
        //ensure that the urls are absolute
        Pattern pattern = Pattern.compile("^(https?://[^/]+)");
        Matcher matcher = pattern.matcher(url);
        if (!matcher.find())
            throw new IllegalArgumentException("Invalid Url format.");

        //get the http protocol match
        String protocol = matcher.group(1);

        //remove redundant forward slashes
        String query = url.substring(protocol.length());
        query = query.replaceAll("//+", "/");

        //return process url
        return protocol.concat(query);
    }

    /**
     * Replaces all occurrences of the given string in the string builder
     * @param   stringBuilder The string builder to update with replaced strings
     * @param    toReplace The string to replace in the string builder
     * @param   replaceWith   The string to replace with */
    public static void replaceAll(StringBuilder stringBuilder, String toReplace, String replaceWith) {
        int index = stringBuilder.indexOf(toReplace);

        while (index != -1) {
            stringBuilder.replace(index, index + toReplace.length(), replaceWith);
            index += replaceWith.length(); // Move to the end of the replacement
            index = stringBuilder.indexOf(toReplace, index);
        }
    }
}