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authorTarun Gupta <tarun1995gupta@gmail.com>2015-05-26 17:43:14 (GMT)
committerTarun Gupta <tarun1995gupta@gmail.com>2015-05-27 17:39:37 (GMT)
commita790b9a2cf6c138e6fecf614f346993153aabc82 (patch)
treec5f314cab0c2778686cade97c3b6a1d502dfe8c5 /src/com/isode
parent9416cec9c245e8998f29071635be4e416946e1a4 (diff)
downloadstroke-a790b9a2cf6c138e6fecf614f346993153aabc82.zip
stroke-a790b9a2cf6c138e6fecf614f346993153aabc82.tar.bz2
Add the functionality for processing of URL.
Adds functionalities for URL processing such as extracting parameters from URL, decoding URL. License: This patch is BSD-licensed, see Documentation/Licenses/BSD-simplified.txt for details. Test-Information: Corresponding tests are added for each function which passes. Change-Id: I1d54b86167b4f368c365f16c63641a6e6a91cbb8
Diffstat (limited to 'src/com/isode')
-rw-r--r--src/com/isode/stroke/base/URL.java245
1 files changed, 245 insertions, 0 deletions
diff --git a/src/com/isode/stroke/base/URL.java b/src/com/isode/stroke/base/URL.java
new file mode 100644
index 0000000..f210ee4
--- /dev/null
+++ b/src/com/isode/stroke/base/URL.java
@@ -0,0 +1,245 @@
+/*
+ * Copyright (c) 2010-2011 Isode Limited.
+ * All rights reserved.
+ * See the COPYING file for more information.
+ */
+/*
+ * Copyright (c) 2015 Tarun Gupta.
+ * Licensed under the simplified BSD license.
+ * See Documentation/Licenses/BSD-simplified.txt for more information.
+ */
+
+package com.isode.stroke.base;
+
+import com.isode.stroke.base.NotNull;
+import java.net.URLDecoder;
+import java.io.UnsupportedEncodingException;
+
+public class URL {
+
+ private String scheme;
+ private String user;
+ private String password;
+ private String host;
+ private Integer port = null;
+ private String path;
+ private boolean empty;
+
+ /**
+ * Default constructor.
+ */
+ public URL() {
+ this("", "", "", "", null, "", true);
+ }
+
+ /**
+ * Parameterized Constructor
+ * @param scheme notnull
+ * @param host notnull
+ * @param path notnull
+ */
+ public URL(String scheme, String host, String path) {
+ this(scheme, "", "", host, null, path, false);
+ }
+
+ /**
+ * Parameterized Constructor
+ * @param scheme notnull
+ * @param host notnull
+ * @param port
+ * @param path notnul
+ */
+ public URL(String scheme, String host, int port, String path) {
+ this(scheme, "", "", host, port, path, false);
+ }
+
+ /**
+ * Parameterized Constructor
+ * @param scheme notnull
+ * @param user notnull
+ * @param password notnull
+ * @param host notnull
+ * @param port
+ * @param path notnul
+ * @param empty notnull
+ */
+ public URL(String scheme, String user, String password, String host, Integer port, String path, boolean empty) {
+ NotNull.exceptIfNull(scheme, "scheme");
+ NotNull.exceptIfNull(user, "user");
+ NotNull.exceptIfNull(password, "password");
+ NotNull.exceptIfNull(host, "host");
+ NotNull.exceptIfNull(path, "path");
+ NotNull.exceptIfNull(empty, "empty");
+ this.scheme = scheme;
+ this.user = user;
+ this.password = password;
+ this.host = host;
+ this.port = port;
+ this.path = path;
+ this.empty = empty;
+ }
+
+ /**
+ * Whether the URL is empty.
+ */
+ public boolean isEmpty() {
+ return empty;
+ }
+
+ /**
+ * Scheme used for the URL (http, https etc.)
+ */
+ public String getScheme() {
+ return scheme;
+ }
+
+ /**
+ * Hostname
+ */
+ public String getHost() {
+ return host;
+ }
+
+ /**
+ * Port number
+ */
+ public Integer getPort() {
+ return port;
+ }
+
+ /**
+ * Path
+ */
+ public String getPath() {
+ return path;
+ }
+
+ /**
+ * @return Complete URL with all its parameters and format.
+ */
+ public String toString() {
+ if (empty) {
+ return "";
+ }
+ String result = scheme + "://";
+ if (!user.isEmpty()) {
+ result += user;
+ if (!password.isEmpty()) {
+ result += ":" + password;
+ }
+ result += "@";
+ }
+ result += host;
+ if (port != null) {
+ result += ":";
+ result += Integer.toString(port);
+ }
+ result += path;
+ return result;
+ }
+
+ /**
+ * @return port number based on scheme.
+ */
+ public static int getPortOrDefaultPort(URL url) {
+ NotNull.exceptIfNull(url, "url");
+ if (url.getPort() != null) {
+ return url.getPort();
+ }
+ else if (url.getScheme() == "http") {
+ return 80;
+ }
+ else if (url.getScheme() == "https") {
+ return 443;
+ }
+ else {
+ System.err.println("Unknown scheme: " + url.getScheme());
+ return 80;
+ }
+ }
+
+ /**
+ * @param URL String which has to be processed for extraction of parameters.
+ * @return URL object after extracting all parameters from urlString.
+ */
+ public static URL fromString(String urlString) {
+ NotNull.exceptIfNull(urlString, "urlString");
+ int colonIndex = urlString.indexOf(':');
+ if (colonIndex == -1) {
+ return new URL();
+ }
+ String scheme = urlString.substring(0, colonIndex);
+
+ // Authority
+ if (urlString.length() > colonIndex + 2 && urlString.charAt(colonIndex+1) == '/' && urlString.charAt(colonIndex+2) == '/') {
+ int authorityIndex = colonIndex + 3;
+ int slashIndex = urlString.indexOf('/', authorityIndex);
+ String authority = "";
+ String path = "";
+ if (slashIndex == -1) {
+ authority = urlString.substring(authorityIndex);
+ path = "";
+ }
+ else {
+ authority = urlString.substring(authorityIndex, slashIndex);
+ path = unescape(urlString.substring(slashIndex));
+ }
+
+ int atIndex = authority.indexOf('@');
+ String userInfo = "";
+ String hostAndPort = "";
+ if (atIndex != -1) {
+ userInfo = authority.substring(0, atIndex);
+ hostAndPort = authority.substring(atIndex + 1);
+ }
+ else {
+ userInfo = "";
+ hostAndPort = authority;
+ }
+
+ String host = "";
+ Integer port = null;
+ colonIndex = hostAndPort.indexOf(':');
+ if (colonIndex != -1) {
+ host = unescape(hostAndPort.substring(0, colonIndex));
+ try {
+ port = Integer.valueOf(hostAndPort.substring(colonIndex + 1));
+ }
+ catch (NumberFormatException e) {
+ return new URL();
+ }
+ }
+ else {
+ host = unescape(hostAndPort);
+ }
+
+ if (port != null) {
+ return new URL(scheme, host, port, path);
+ }
+ else {
+ return new URL(scheme, host, path);
+ }
+ }
+ else {
+ // We don't support URLs without authorities yet
+ return new URL();
+ }
+ }
+
+ /**
+ * @return URL String after decoding hexadecimal bits.
+ */
+ public static String unescape(String str) {
+ try {
+ return URLDecoder.decode(str, "UTF-8");
+ }
+ catch(IllegalArgumentException e) {
+ System.err.println(e.getMessage());
+ return "";
+ }
+ catch(UnsupportedEncodingException e) {
+ System.err.println(e.getMessage());
+ return "";
+ }
+ }
+} \ No newline at end of file