Merge the matrix-java-sdk due to it no longer maintained. Remove thirdparty repositories.

src/main/java/io/kamax/matrix/MatrixPath.java

@@ -0,0 +1,104 @@
+/*
+ * matrix-java-sdk - Matrix Client SDK for Java
+ * Copyright (C) 2018 Kamax Sàrl
+ *
+ * https://www.kamax.io/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.kamax.matrix;
+
+import java.io.UnsupportedEncodingException;
+import java.net.URI;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+
+public class MatrixPath {
+
+    public static String encode(String element) {
+        try {
+            return URLEncoder.encode(element, StandardCharsets.UTF_8.name());
+        } catch (UnsupportedEncodingException e) {
+            // This would be madness if it happened, but we need to handle it still
+            throw new RuntimeException(e);
+        }
+    }
+
+    private static MatrixPath with(String base) {
+        return new MatrixPath().add(base);
+    }
+
+    public static MatrixPath root() {
+        return with("");
+    }
+
+    public static MatrixPath base() {
+        return root().add("_matrix");
+    }
+
+    public static MatrixPath client() {
+        return base().add("client");
+    }
+
+    public static MatrixPath clientR0() {
+        return client().add("r0");
+    }
+
+    private StringBuilder path = new StringBuilder();
+
+    /**
+     * Add the raw element to this path
+     * 
+     * @param element
+     *            The raw element to be added as is to the path, without encoding or path separator
+     * @return The MatrixPath
+     */
+    public MatrixPath put(String element) {
+        path.append(element);
+        return this;
+    }
+
+    /**
+     * URL encode and add a new path element
+     *
+     * This method handle path separators
+     * 
+     * @param element
+     *            The element to be encoded and added.
+     * @return The MatrixPath
+     */
+    public MatrixPath add(String element) {
+        // We add a path separator if this is the first character or if the last character is not a path separator
+        // already
+        if (path.length() == 0 || path.lastIndexOf("/", 0) < path.length() - 1) {
+            put("/");
+        }
+        put(encode(element));
+        return this;
+    }
+
+    public String get() {
+        return path.toString();
+    }
+
+    public String toString() {
+        return get();
+    }
+
+    public URI toURI() {
+        return URI.create(toString());
+    }
+
+}