summaryrefslogtreecommitdiffstats
path: root/simple/simple-http/src/main/java/org/simpleframework/http/core/QueryCombiner.java
diff options
context:
space:
mode:
Diffstat (limited to 'simple/simple-http/src/main/java/org/simpleframework/http/core/QueryCombiner.java')
-rw-r--r--simple/simple-http/src/main/java/org/simpleframework/http/core/QueryCombiner.java148
1 files changed, 148 insertions, 0 deletions
diff --git a/simple/simple-http/src/main/java/org/simpleframework/http/core/QueryCombiner.java b/simple/simple-http/src/main/java/org/simpleframework/http/core/QueryCombiner.java
new file mode 100644
index 0000000..ed4c92e
--- /dev/null
+++ b/simple/simple-http/src/main/java/org/simpleframework/http/core/QueryCombiner.java
@@ -0,0 +1,148 @@
+/*
+ * QueryCombiner.java May 2003
+ *
+ * Copyright (C) 2003, Niall Gallagher <niallg@users.sf.net>
+ *
+ * Licensed 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.
+ */
+
+package org.simpleframework.http.core;
+
+import java.util.List;
+import java.util.Set;
+
+import org.simpleframework.http.Query;
+import org.simpleframework.http.parse.QueryParser;
+
+/**
+ * The <code>QueryCombimer</code> is used to parse several strings
+ * as a complete URL encoded parameter string. This will do the
+ * following concatenations.
+ *
+ * <pre>
+ * null + "a=b&amp;c=d&amp;e=f" = "a=b&amp;c=d&amp;e=f"
+ * "a=b" + "e=f&amp;g=h" = "a=b&amp;e=f&amp;g=h";
+ * "a=b&amp;c=d&amp;e=f" + "" = "a=b&amp;c=d&amp;e=f"
+ * </pre>
+ *
+ * This ensures that the <code>QueryForm</code> can parse the list
+ * of strings as a single URL encoded parameter string. This can
+ * parse any number of parameter strings.
+ *
+ * @author Niall Gallagher
+ */
+class QueryCombiner extends QueryParser {
+
+ /**
+ * Constructor that allows a list of string objects to be
+ * parsed as a single parameter string. This will check
+ * each string to see if it is empty, that is, is either
+ * null or the zero length string.
+ *
+ * @param list this is a list of query values to be used
+ */
+ public QueryCombiner(String... list) {
+ this.parse(list);
+ }
+
+ /**
+ * Constructor that allows an array of string objects to
+ * be parsed as a single parameter string. This will check
+ * each string to see if it is empty, that is, is either
+ * null or the zero length string.
+ *
+ * @param query this is the query from the HTTP header
+ * @param list this is the list of strings to be parsed
+ */
+ public QueryCombiner(Query query, String... list) {
+ this.add(query);
+ this.parse(list);
+ }
+
+ /**
+ * Constructor that allows an array of string objects to
+ * be parsed as a single parameter string. This will check
+ * each string to see if it is empty, that is, is either
+ * null or the zero length string.
+ *
+ * @param query this is the query from the HTTP header
+ * @param post this is the query from the HTTP post body
+ */
+ public QueryCombiner(Query query, Query post) {
+ this.add(query);
+ this.add(post);
+ }
+
+ /**
+ * This will concatenate the list of parameter strings as a
+ * single parameter string, before handing it to be parsed
+ * by the <code>parse(String)</code> method. This method
+ * will ignore any null or zero length strings in the array.
+ *
+ * @param list this is the list of strings to be parsed
+ */
+ public void parse(String[] list) {
+ StringBuilder text = new StringBuilder();
+
+ for(int i = 0; i < list.length; i++) {
+ if(list[i] == null) {
+ continue;
+ } else if(list[i].length()==0){
+ continue;
+ } else if(text.length() > 0){
+ text.append("&");
+ }
+ text.append(list[i]);
+ }
+ parse(text);
+ }
+
+ /**
+ * This is used to perform a parse of the form data that is in
+ * the provided string builder. This will simply convert the
+ * data in to a string and parse it in the normal fashion.
+ *
+ * @param text this is the buffer to be converted to a string
+ */
+ private void parse(StringBuilder text) {
+ if(text != null){
+ ensureCapacity(text.length());
+ count = text.length();
+ text.getChars(0, count, buf,0);
+ parse();
+ }
+ }
+
+ /**
+ * This method is used to insert a collection of tokens into
+ * the parsers map. This is used when another source of tokens
+ * is required to populate the connection currently maintained
+ * within this parsers internal map. Any tokens that currently
+ * exist with similar names will be overwritten by this.
+ *
+ * @param query this is the collection of tokens to be added
+ */
+ private void add(Query query) {
+ Set<String> keySet = query.keySet();
+
+ for(String key : keySet) {
+ List<String> list = query.getAll(key);
+ String first = query.get(key);
+
+ if(first != null) {
+ all.put(key, list);
+ map.put(key, first);
+ }
+ }
+ }
+}