/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.http.client.utils;
import java.net.URI;
import java.net.URISyntaxException;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.http.Consts;
import org.apache.http.NameValuePair;
import org.apache.http.annotation.NotThreadSafe;
import org.apache.http.conn.util.InetAddressUtils;
import org.apache.http.message.BasicNameValuePair;
/**
* Builder for {@link URI} instances.
*
* @since 4.2
*/
@NotThreadSafe
public class URIBuilder {
private String scheme;
private String encodedSchemeSpecificPart;
private String encodedAuthority;
private String userInfo;
private String encodedUserInfo;
private String host;
private int port;
private String path;
private String encodedPath;
private String encodedQuery;
private List<NameValuePair> queryParams;
private String query;
private Charset charset;
private String fragment;
private String encodedFragment;
/**
* Constructs an empty instance.
*/
public URIBuilder() {
super();
this.port = -1;
}
/**
* Construct an instance from the string which must be a valid URI.
*
* @param string a valid URI in string form
* @throws URISyntaxException if the input is not a valid URI
*/
public URIBuilder(final String string) throws URISyntaxException {
super();
digestURI(new URI(string));
}
/**
* Construct an instance from the provided URI.
* @param uri
*/
public URIBuilder(final URI uri) {
super();
digestURI(uri);
}
/**
* @since 4.4
*/
public URIBuilder setCharset(final Charset charset) {
this.charset = charset;
return this;
}
/**
* @since 4.4
*/
public Charset getCharset() {
return charset;
}
private List <NameValuePair> parseQuery(final String query, final Charset charset) {
if (query != null && !query.isEmpty()) {
return URLEncodedUtils.parse(query, charset);
}
return null;
}
/**
* Builds a {@link URI} instance.
*/
public URI build() throws URISyntaxException {
return new URI(buildString());
}
private String buildString() {
final StringBuilder sb = new StringBuilder();
if (this.scheme != null) {
sb.append(this.scheme).append(':');
}
if (this.encodedSchemeSpecificPart != null) {
sb.append(this.encodedSchemeSpecificPart);
} else {
if (this.encodedAuthority != null) {
sb.append("//").append(this.encodedAuthority);
} else if (this.host != null) {
sb.append("//");
if (this.encodedUserInfo != null) {
sb.append(this.encodedUserInfo).append("@");
} else if (this.userInfo != null) {
sb.append(encodeUserInfo(this.userInfo)).append("@");
}
if (InetAddressUtils.isIPv6Address(this.host)) {
sb.append("[").append(this.host).append("]");
} else {
sb.append(this.host);
}
if (this.port >= 0) {
sb.append(":").append(this.port);
}
}
if (this.encodedPath != null) {
sb.append(normalizePath(this.encodedPath));
} else if (this.path != null) {
sb.append(encodePath(normalizePath(this.path)));
}
if (this.encodedQuery != null) {
sb.append("?").append(this.encodedQuery);
} else if (this.queryParams != null) {
sb.append("?").append(encodeUrlForm(this.queryParams));
} else if (this.query != null) {
sb.append("?").append(encodeUric(this.query));
}
}
if (this.encodedFragment != null) {
sb.append("#").append(this.encodedFragment);
} else if (this.fragment != null) {
sb.append("#").append(encodeUric(this.fragment));
}
return sb.toString();
}
private void digestURI(final URI uri) {
this.scheme = uri.getScheme();
this.encodedSchemeSpecificPart = uri.getRawSchemeSpecificPart();
this.encodedAuthority = uri.getRawAuthority();
this.host = uri.getHost();
this.port = uri.getPort();
this.encodedUserInfo = uri.getRawUserInfo();
this.userInfo = uri.getUserInfo();
this.encodedPath = uri.getRawPath();
this.path = uri.getPath();
this.encodedQuery = uri.getRawQuery();
this.queryParams = parseQuery(uri.getRawQuery(), this.charset != null ? this.charset : Consts.UTF_8);
this.encodedFragment = uri.getRawFragment();
this.fragment = uri.getFragment();
}
private String encodeUserInfo(final String userInfo) {
return URLEncodedUtils.encUserInfo(userInfo, this.charset != null ? this.charset : Consts.UTF_8);
}
private String encodePath(final String path) {
return URLEncodedUtils.encPath(path, this.charset != null ? this.charset : Consts.UTF_8);
}
private String encodeUrlForm(final List<NameValuePair> params) {
return URLEncodedUtils.format(params, this.charset != null ? this.charset : Consts.UTF_8);
}
private String encodeUric(final String fragment) {
return URLEncodedUtils.encUric(fragment, this.charset != null ? this.charset : Consts.UTF_8);
}
/**
* Sets URI scheme.
*/
public URIBuilder setScheme(final String scheme) {
this.scheme = scheme;
return this;
}
/**
* Sets URI user info. The value is expected to be unescaped and may contain non ASCII
* characters.
*/
public URIBuilder setUserInfo(final String userInfo) {
this.userInfo = userInfo;
this.encodedSchemeSpecificPart = null;
this.encodedAuthority = null;
this.encodedUserInfo = null;
return this;
}
/**
* Sets URI user info as a combination of username and password. These values are expected to
* be unescaped and may contain non ASCII characters.
*/
public URIBuilder setUserInfo(final String username, final String password) {
return setUserInfo(username + ':' + password);
}
/**
* Sets URI host.
*/
public URIBuilder setHost(final String host) {
this.host = host;
this.encodedSchemeSpecificPart = null;
this.encodedAuthority = null;
return this;
}
/**
* Sets URI port.
*/
public URIBuilder setPort(final int port) {
this.port = port < 0 ? -1 : port;
this.encodedSchemeSpecificPart = null;
this.encodedAuthority = null;
return this;
}
/**
* Sets URI path. The value is expected to be unescaped and may contain non ASCII characters.
*/
public URIBuilder setPath(final String path) {
this.path = path;
this.encodedSchemeSpecificPart = null;
this.encodedPath = null;
return this;
}
/**
* Removes URI query.
*/
public URIBuilder removeQuery() {
this.queryParams = null;
this.query = null;
this.encodedQuery = null;
this.encodedSchemeSpecificPart = null;
return this;
}
/**
* Sets URI query.
* <p>
* The value is expected to be encoded form data.
*
* @deprecated (4.3) use {@link #setParameters(List)} or {@link #setParameters(NameValuePair...)}
*
* @see URLEncodedUtils#parse
*/
@Deprecated
public URIBuilder setQuery(final String query) {
this.queryParams = parseQuery(query, this.charset != null ? this.charset : Consts.UTF_8);
this.query = null;
this.encodedQuery = null;
this.encodedSchemeSpecificPart = null;
return this;
}
/**
* Sets URI query parameters. The parameter name / values are expected to be unescaped
* and may contain non ASCII characters.
* <p>
* Please note query parameters and custom query component are mutually exclusive. This method
* will remove custom query if present.
* </p>
*
* @since 4.3
*/
public URIBuilder setParameters(final List <NameValuePair> nvps) {
if (this.queryParams == null) {
this.queryParams = new ArrayList<NameValuePair>();
} else {
this.queryParams.clear();
}
this.queryParams.addAll(nvps);
this.encodedQuery = null;
this.encodedSchemeSpecificPart = null;
this.query = null;
return this;
}
/**
* Adds URI query parameters. The parameter name / values are expected to be unescaped
* and may contain non ASCII characters.
* <p>
* Please note query parameters and custom query component are mutually exclusive. This method
* will remove custom query if present.
* </p>
*
* @since 4.3
*/
public URIBuilder addParameters(final List <NameValuePair> nvps) {
if (this.queryParams == null) {
this.queryParams = new ArrayList<NameValuePair>();
}
this.queryParams.addAll(nvps);
this.encodedQuery = null;
this.encodedSchemeSpecificPart = null;
this.query = null;
return this;
}
/**
* Sets URI query parameters. The parameter name / values are expected to be unescaped
* and may contain non ASCII characters.
* <p>
* Please note query parameters and custom query component are mutually exclusive. This method
* will remove custom query if present.
* </p>
*
* @since 4.3
*/
public URIBuilder setParameters(final NameValuePair... nvps) {
if (this.queryParams == null) {
this.queryParams = new ArrayList<NameValuePair>();
} else {
this.queryParams.clear();
}
for (final NameValuePair nvp: nvps) {
this.queryParams.add(nvp);
}
this.encodedQuery = null;
this.encodedSchemeSpecificPart = null;
this.query = null;
return this;
}
/**
* Adds parameter to URI query. The parameter name and value are expected to be unescaped
* and may contain non ASCII characters.
* <p>
* Please note query parameters and custom query component are mutually exclusive. This method
* will remove custom query if present.
* </p>
*/
public URIBuilder addParameter(final String param, final String value) {
if (this.queryParams == null) {
this.queryParams = new ArrayList<NameValuePair>();
}
this.queryParams.add(new BasicNameValuePair(param, value));
this.encodedQuery = null;
this.encodedSchemeSpecificPart = null;
this.query = null;
return this;
}
/**
* Sets parameter of URI query overriding existing value if set. The parameter name and value
* are expected to be unescaped and may contain non ASCII characters.
* <p>
* Please note query parameters and custom query component are mutually exclusive. This method
* will remove custom query if present.
* </p>
*/
public URIBuilder setParameter(final String param, final String value) {
if (this.queryParams == null) {
this.queryParams = new ArrayList<NameValuePair>();
}
if (!this.queryParams.isEmpty()) {
for (final Iterator<NameValuePair> it = this.queryParams.iterator(); it.hasNext(); ) {
final NameValuePair nvp = it.next();
if (nvp.getName().equals(param)) {
it.remove();
}
}
}
this.queryParams.add(new BasicNameValuePair(param, value));
this.encodedQuery = null;
this.encodedSchemeSpecificPart = null;
this.query = null;
return this;
}
/**
* Clears URI query parameters.
*
* @since 4.3
*/
public URIBuilder clearParameters() {
this.queryParams = null;
this.encodedQuery = null;
this.encodedSchemeSpecificPart = null;
return this;
}
/**
* Sets custom URI query. The value is expected to be unescaped and may contain non ASCII
* characters.
* <p>
* Please note query parameters and custom query component are mutually exclusive. This method
* will remove query parameters if present.
* </p>
*
* @since 4.3
*/
public URIBuilder setCustomQuery(final String query) {
this.query = query;
this.encodedQuery = null;
this.encodedSchemeSpecificPart = null;
this.queryParams = null;
return this;
}
/**
* Sets URI fragment. The value is expected to be unescaped and may contain non ASCII
* characters.
*/
public URIBuilder setFragment(final String fragment) {
this.fragment = fragment;
this.encodedFragment = null;
return this;
}
/**
* @since 4.3
*/
public boolean isAbsolute() {
return this.scheme != null;
}
/**
* @since 4.3
*/
public boolean isOpaque() {
return this.path == null;
}
public String getScheme() {
return this.scheme;
}
public String getUserInfo() {
return this.userInfo;
}
public String getHost() {
return this.host;
}
public int getPort() {
return this.port;
}
public String getPath() {
return this.path;
}
public List<NameValuePair> getQueryParams() {
if (this.queryParams != null) {
return new ArrayList<NameValuePair>(this.queryParams);
} else {
return new ArrayList<NameValuePair>();
}
}
public String getFragment() {
return this.fragment;
}
@Override
public String toString() {
return buildString();
}
private static String normalizePath(final String path) {
String s = path;
if (s == null) {
return null;
}
int n = 0;
for (; n < s.length(); n++) {
if (s.charAt(n) != '/') {
break;
}
}
if (n > 1) {
s = s.substring(n - 1);
}
return s;
}
}