jodd.servlet.UrlBuilder Maven / Gradle / Ivy
// Copyright (c) 2003-2010, Jodd Team (jodd.org). All Rights Reserved.
package jodd.servlet;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletRequest;
import static jodd.servlet.UrlEncoder.appendUrl;
/**
* Safe URL builder.
*/
public class UrlBuilder {
protected final StringBuilder url;
protected final String encoding;
protected final HttpServletResponse response;
protected boolean hasParams;
public UrlBuilder(String baseUrl, String encoding) {
this(baseUrl, encoding, null, null);
}
public UrlBuilder(String baseUrl, String encoding, HttpServletRequest request, HttpServletResponse response) {
if (request != null) {
baseUrl = ServletUtil.resolveUrl(baseUrl, request);
}
url = new StringBuilder(baseUrl);
this.hasParams = baseUrl.indexOf('?') != -1;
this.encoding = encoding;
this.response = response;
}
/**
* Appends new parameter to url.
*/
public UrlBuilder param(String name, Object value) {
return param(name, value == null ? null : value.toString());
}
/**
* Appends new parameter to url.
*/
public UrlBuilder param(String name, String value) {
url.append(hasParams ? '&' : '?');
hasParams = true;
appendUrl(url, name, encoding);
if ((value != null) && (value.length() > 0)) {
url.append('=');
appendUrl(url, value, encoding);
}
return this;
}
public UrlBuilder param(String nameValue) {
url.append(hasParams ? '&' : '?');
hasParams = true;
int eqNdx = nameValue.indexOf('=');
String name; String value = null;
if (eqNdx == -1) {
name = nameValue;
} else {
name = nameValue.substring(0, eqNdx);
value = nameValue.substring(eqNdx + 1);
}
appendUrl(url, name, encoding);
if ((value != null) && (value.length() > 0)) {
url.append('=');
appendUrl(url, value, encoding);
}
return this;
}
/**
* Returns builded url.
*/
@Override
public String toString() {
String result = url.toString();
return response != null ? response.encodeURL(result) : result;
}
}