com.box.restclientv2.httpclientsupport.HttpClientURIBuilder Maven / Gradle / Ivy
package com.box.restclientv2.httpclientsupport;
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.NameValuePair;
import org.apache.http.conn.util.InetAddressUtils;
import org.apache.http.message.BasicNameValuePair;
/**
* {@link URI} builder for HTTP requests.
*
* @since 4.2
*/
public class HttpClientURIBuilder {
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 queryParams;
private String fragment;
private String encodedFragment;
/**
* Constructs an empty instance.
*/
public HttpClientURIBuilder() {
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 HttpClientURIBuilder(final String string) throws URISyntaxException {
super();
digestURI(new URI(string));
}
/**
* Construct an instance from the provided URI.
*
* @param uri
* @throws URISyntaxException
*/
public HttpClientURIBuilder(final URI uri) throws URISyntaxException {
super();
digestURI(uri);
}
private List parseQuery(final String query, final Charset charset) throws URISyntaxException {
if (query != null && query.length() > 0) {
return HttpClientURLEncodedUtils.parse(query, charset.name());
}
return null;
}
/**
* Builds a {@link URI} instance.
*
* @return The built {@link URI}.
* @throws URISyntaxException
*/
public URI build() throws URISyntaxException {
return new URI(buildString());
}
private String buildString() {
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(encodeQuery(this.queryParams));
}
}
if (this.encodedFragment != null) {
sb.append("#").append(this.encodedFragment);
}
else if (this.fragment != null) {
sb.append("#").append(encodeFragment(this.fragment));
}
return sb.toString();
}
private void digestURI(final URI uri) throws URISyntaxException {
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(), HttpClientConsts.UTF_8);
this.encodedFragment = uri.getRawFragment();
this.fragment = uri.getFragment();
}
private String encodeUserInfo(final String userInfo) {
return HttpClientURLEncodedUtils.encUserInfo(userInfo, HttpClientConsts.UTF_8);
}
private String encodePath(final String path) {
return HttpClientURLEncodedUtils.encPath(path, HttpClientConsts.UTF_8);
}
private String encodeQuery(final List params) {
return HttpClientURLEncodedUtils.format(params, HttpClientConsts.UTF_8);
}
private String encodeFragment(final String fragment) {
return HttpClientURLEncodedUtils.encFragment(fragment, HttpClientConsts.UTF_8);
}
/**
* Sets URI scheme.
*/
public HttpClientURIBuilder 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 HttpClientURIBuilder 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 HttpClientURIBuilder setUserInfo(final String username, final String password) {
return setUserInfo(username + ':' + password);
}
/**
* Sets URI host.
*/
public HttpClientURIBuilder setHost(final String host) {
this.host = host;
this.encodedSchemeSpecificPart = null;
this.encodedAuthority = null;
return this;
}
/**
* Sets URI port.
*/
public HttpClientURIBuilder 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 HttpClientURIBuilder setPath(final String path) {
this.path = path;
this.encodedSchemeSpecificPart = null;
this.encodedPath = null;
return this;
}
/**
* Removes URI query.
*/
public HttpClientURIBuilder removeQuery() {
this.queryParams = null;
this.encodedQuery = null;
this.encodedSchemeSpecificPart = null;
return this;
}
/**
* Sets URI query.
*
* The value is expected to be encoded form data.
*
* @throws URISyntaxException
*/
public HttpClientURIBuilder setQuery(final String query) throws URISyntaxException {
this.queryParams = parseQuery(query, HttpClientConsts.UTF_8);
this.encodedQuery = null;
this.encodedSchemeSpecificPart = null;
return this;
}
/**
* Adds parameter to URI query. The parameter name and value are expected to be unescaped and may contain non ASCII characters.
*/
public HttpClientURIBuilder addParameter(final String param, final String value) {
if (this.queryParams == null) {
this.queryParams = new ArrayList();
}
this.queryParams.add(new BasicNameValuePair(param, value));
this.encodedQuery = null;
this.encodedSchemeSpecificPart = 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.
*/
public HttpClientURIBuilder setParameter(final String param, final String value) {
if (this.queryParams == null) {
this.queryParams = new ArrayList();
}
if (!this.queryParams.isEmpty()) {
for (Iterator it = this.queryParams.iterator(); it.hasNext();) {
NameValuePair nvp = it.next();
if (nvp.getName().equals(param)) {
it.remove();
}
}
}
this.queryParams.add(new BasicNameValuePair(param, value));
this.encodedQuery = null;
this.encodedSchemeSpecificPart = null;
return this;
}
/**
* Sets URI fragment. The value is expected to be unescaped and may contain non ASCII characters.
*/
public HttpClientURIBuilder setFragment(final String fragment) {
this.fragment = fragment;
this.encodedFragment = null;
return this;
}
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 getQueryParams() {
if (this.queryParams != null) {
return new ArrayList(this.queryParams);
}
else {
return new ArrayList();
}
}
public String getFragment() {
return this.fragment;
}
@Override
public String toString() {
return buildString();
}
private static String normalizePath(String path) {
if (path == null) {
return null;
}
int n = 0;
for (; n < path.length(); n++) {
if (path.charAt(n) != '/') {
break;
}
}
if (n > 1) {
path = path.substring(n - 1);
}
return path;
}
}