org.apache.james.core.filesystem.SimpleUrl.java Source code

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Here is the source code for org.apache.james.core.filesystem.SimpleUrl.java

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 * to you under the Apache License, Version 2.0 (the            *
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package org.apache.james.core.filesystem;

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

import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.CharMatcher;
import com.google.common.base.Optional;
import com.google.common.io.Files;

public class SimpleUrl {
    private static final String FOLDER_SEPARATOR = "/";

    private static final char WINDOWS_FOLDER_SEPARATOR = '\\';

    private static final String CURRENT_PATH = ".";

    private static final Pattern URL_REGEXP = Pattern.compile("^([^/][^/]*:(?://)?)?(.*)");

    private static String url;
    private static String protocol;
    private static String path;
    private static String simplifiedUrl;

    public SimpleUrl(String url) {
        SimpleUrl.url = url;
        String urlWithUnixSeparators = CharMatcher.is(WINDOWS_FOLDER_SEPARATOR).replaceFrom(url, FOLDER_SEPARATOR);
        extractComponents(urlWithUnixSeparators);
        simplifiedUrl = protocol + simplifyPath(path);
    }

    private static void extractComponents(String urlWithUnixSeparators) {
        Matcher m = URL_REGEXP.matcher(urlWithUnixSeparators);
        m.matches();
        protocol = Optional.fromNullable(m.group(1)).or("");
        path = Optional.fromNullable(m.group(2)).or("");
    }

    @VisibleForTesting
    static String simplifyPath(String path) {
        String simplified = Files.simplifyPath(path);
        if (CURRENT_PATH.equals(simplified)) {
            return "";
        }
        return simplified;
    }

    public String getUrl() {
        return url;
    }

    public String getSimplified() {
        return simplifiedUrl;
    }

}