72 lines
2.0 KiB
Java
72 lines
2.0 KiB
Java
package org.gcube.portlets.widgets.ckancontentmoderator.client.util;
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import com.google.gwt.core.client.GWT;
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import com.google.gwt.http.client.URL;
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/**
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* The Class QueryStringUtil.
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*
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* @author Francesco Mangiacrapa at ISTI-CNR francesco.mangiacrapa@isti.cnr.it
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*
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* May 3, 2022
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*/
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public class QueryStringUtil {
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/**
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* Gets the value of parameter in the URL.
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*
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* @param paramName the param name
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* @param url the url
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* @return the value of parameter in the URL
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*/
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public static String getValueOfParameterInTheURL(String paramName, String url) {
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int index = url.toLowerCase().indexOf(paramName.toLowerCase() + "="); // ADDING CHAR "=" IN TAIL TO BE SURE THAT
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// IT IS A PARAMETER
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String value = null;
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if (index > -1) {
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int start = index + paramName.length() + 1; // add +1 for char '='
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String sub = url.substring(start, url.length());
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int indexOfSeparator = sub.indexOf("&");
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int end = indexOfSeparator != -1 ? indexOfSeparator : sub.length();
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value = sub.substring(0, end);
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}
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GWT.log("Returning value " + value + " for the parameter: " + paramName);
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return value;
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}
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/**
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* Base 64 decode.
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*
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* @param a the a
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* @return the string
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*/
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private static native String base64decode(String a) /*-{
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return window.atob(a);
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}-*/;
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/**
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* Base 64 decode query string.
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*
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* @param base64EncodedQueryString the base 64 encoded query string
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* @return the string
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*/
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public static String base64DecodeQueryString(String base64EncodedQueryString) {
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if (base64EncodedQueryString != null && !base64EncodedQueryString.isEmpty()) {
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String b64DecodedQueryStringParameter = base64decode(base64EncodedQueryString);
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GWT.log("Base64 Decoded string is: " + b64DecodedQueryStringParameter);
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b64DecodedQueryStringParameter = URL.decodeQueryString(b64DecodedQueryStringParameter); // equals should be
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// encoded too (%3D)
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GWT.log("Decoded query string is: " + b64DecodedQueryStringParameter);
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return b64DecodedQueryStringParameter;
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}
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return base64EncodedQueryString;
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}
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}
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