Renamed package from rife2 to rife

lib/src/main/java/rife/render/EncodeQp.java

@@ -0,0 +1,85 @@
+/*
+ *  Copyright 2023 the original author or authors.
+ *
+ *  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
+ *
+ *       https://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 rife.render;
+
+import rife.template.Template;
+import rife.template.ValueRenderer;
+import rife.tools.Localization;
+
+/**
+ * <p>Converts a template value to a quoted-printable string.</p>
+ *
+ * <p>Usage:</p>
+ *
+ * <pre>
+ *   &lt;!--v render:rife.render.EncodeQp:valueId/--&gt;
+ *   {{v render:rife.render.EncodeQp:valueId/}}
+ * </pre>
+ *
+ * @author <a href="https://erik.thauvin.net/">Erik C. Thauvin</a>
+ * @since 1.0
+ */
+public class EncodeQp implements ValueRenderer {
+    /**
+     * Converts the given String to a quoted-printable string.
+     *
+     * @param src the source String
+     * @return the quoted-printable String
+     */
+    public static String toQuotedPrintable(String src) {
+        if (src == null || src.isEmpty()) {
+            return src;
+        }
+
+        char c;
+        var buff = new StringBuilder(src.length());
+        String hex;
+
+        for (var i = 0; i < src.length(); i++) {
+            c = src.charAt(i);
+
+            if (((c > 47) && (c < 58)) || ((c > 64) && (c < 91)) || ((c > 96) && (c < 123))) {
+                buff.append(c);
+            } else {
+                hex = Integer.toString(c, 16);
+
+                buff.append('=');
+
+                if (hex.length() == 1) {
+                    buff.append('0');
+                }
+
+                buff.append(hex.toUpperCase(Localization.getLocale()));
+            }
+        }
+
+        return buff.toString();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public String render(Template template, String valueId, String differentiator) {
+        if (template.hasValueId(differentiator)) {
+            return toQuotedPrintable(template.getValue(differentiator));
+        } else {
+            return "";
+        }
+    }
+}