Old CL related to URL query

Source/core/dom/URLQuery.cpp

+/*
+ * Copyright (C) 2013 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#include "config.h"
+#include "core/dom/URLQuery.h"
+
+#include "weborigin/KURL.h"
+#include "wtf/text/StringBuilder.h"
+
+namespace WebCore {
+
+static String decode(String& input)
+{
+    return decodeURLEscapeSequences(input.replace('+', ' '));
+}
+
+static Vector<pair<String, String> > parseQuery(const String& input)
+{
+    Vector<pair<String, String> > result;
+    unsigned length = input.length();
+    unsigned lastEqual = 0;
+    unsigned lastAmpersand = 0;
+
+    for (unsigned i = 0; i <= length; ++i) {
+        if (i == length || input[i] == '&') {
+            if (lastAmpersand == i) {
+                // do nothing
+            } else if (lastAmpersand == lastEqual) {
+                String name = input.substring(lastAmpersand, i - lastAmpersand);
+                result.append(std::make_pair(decode(name), String()));
+            } else {
+                String name = input.substring(lastAmpersand, lastEqual - lastAmpersand - 1);
+                String value = input.substring(lastEqual, i - lastEqual);
+                result.append(std::make_pair(decode(name), decode(value)));
+            }
+            lastAmpersand = i + 1;
+            lastEqual = i + 1;
+        } else if (input[i] == '=' && lastEqual == lastAmpersand) {
+            lastEqual = i + 1;
+        }
+    }
+
+    return result;
+}
+
+URLQuery::URLQuery(const String& init) : m_entries(parseQuery(init)) { }
+
+URLQuery::URLQuery(PassRefPtr<URLQuery> init) : m_entries(init->m_entries) { }
+
+void URLQuery::append(const String& name, const String& value)
+{
+    m_entries.append(std::make_pair(name, value));
+}
+
+void URLQuery::deleteFunction(const String& name)
+{
+    for (int i = m_entries.size() - 1; i >= 0; --i) {
+        if (m_entries[i].first == name)
+            m_entries.remove(i);
+    }
+}
+
+String URLQuery::get(const String& name)
+{
+    for (int i = 0; i < m_entries.size(); ++i) {
+        if (m_entries[i].first == name)
+            return m_entries[i].second;
+    }
+    return String();
+}
+
+const Vector<String> URLQuery::getAll(const String& name)
+{
+    Vector<String> result;
+    for (int i = 0; i < m_entries.size(); ++i) {
+        if (m_entries[i].first == name)
+            result.append(m_entries[i].second);
+    }
+    return result;
+}
+
+bool URLQuery::has(const String& name)
+{
+    for (int i = 0; i < m_entries.size(); ++i) {
+        if (m_entries[i].first == name)
+            return true;
+    }
+    return false;
+}
+
+void URLQuery::set(const String& name, const String& value)
+{
+    bool found = false;
+    for (int i = 0; i < m_entries.size(); ++i) {
+        if (m_entries[i].first == name) {
+            if (found) {
+                m_entries.remove(i);
+            } else {
+                m_entries[i].second = value;
+                found = true;
+            }
+        }
+    }
+
+    if (!found)
+        append(name, value);
+}
+
+static String encode(String input)
+{
+    return encodeWithURLEscapeSequences(input).replace("%20", "+");
+}
+
+String URLQuery::toString() const
+{
+    StringBuilder builder;
+    for (int i = 0; i < m_entries.size(); ++i) {
+        if (i)
+            builder.append('&');
+        builder.append(encode(m_entries[i].first));
+        builder.append('=');
+        builder.append(encode(m_entries[i].second));
+    }
+    return builder.toString();
+}
+
+} // namespace WebCore