#828 TkJoinedCookies

src/main/java/org/takes/facets/cookies/TkJoinedCookies.java

@@ -0,0 +1,102 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014-2018 Yegor Bugayenko
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package org.takes.facets.cookies;
+
+import java.io.IOException;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
+import org.takes.Request;
+import org.takes.Response;
+import org.takes.Take;
+import org.takes.rs.RsWithHeader;
+import org.takes.rs.RsWithoutHeader;
+import org.takes.tk.TkWrap;
+
+/**
+ * Set-Cookie headers will be joined.
+ *
+ * <p>The class is immutable and thread-safe.
+ *
+ * @author Yegor Bugayenko (yegor256@gmail.com)
+ * @version $Id$
+ * @since 0.11
+ */
+@ToString(callSuper = true)
+@EqualsAndHashCode(callSuper = true)
+public final class TkJoinedCookies extends TkWrap {
+
+    /**
+     * Pattern to find them.
+     */
+    private static final Pattern PTN = Pattern.compile(
+        "set-cookie: (.+)", Pattern.CASE_INSENSITIVE
+    );
+
+    /**
+     * Ctor.
+     * @param take The take to wrap
+     * @checkstyle AnonInnerLengthCheck (100 lines)
+     */
+    public TkJoinedCookies(final Take take) {
+        super(
+            new Take() {
+                @Override
+                public Response act(final Request req) throws IOException {
+                    return TkJoinedCookies.join(take.act(req));
+                }
+            }
+        );
+    }
+
+    /**
+     * Join them.
+     * @param response The response
+     * @return New response
+     * @throws IOException If fails
+     */
+    private static Response join(final Response response) throws IOException {
+        final StringBuilder cookies = new StringBuilder();
+        for (final String header : response.head()) {
+            final Matcher matcher =
+                TkJoinedCookies.PTN.matcher(header);
+            if (!matcher.matches()) {
+                continue;
+            }
+            cookies.append(matcher.group(1)).append(", ");
+        }
+        final Response out;
+        if (cookies.length() > 0) {
+            out = new RsWithHeader(
+                new RsWithoutHeader(response, "Set-cookie"),
+                "Set-Cookie", cookies.toString()
+            );
+        } else {
+            out = response;
+        }
+        return out;
+    }
+
+}

src/test/java/org/takes/facets/cookies/TkJoinedCookiesTest.java

@@ -0,0 +1,67 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014-2018 Yegor Bugayenko
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package org.takes.facets.cookies;
+
+import java.io.IOException;
+import org.hamcrest.MatcherAssert;
+import org.hamcrest.Matchers;
+import org.junit.Test;
+import org.takes.rq.RqFake;
+import org.takes.rs.RsPrint;
+import org.takes.rs.RsText;
+import org.takes.rs.RsWithHeaders;
+import org.takes.tk.TkFixed;
+
+/**
+ * Test case for {@link TkJoinedCookies}.
+ *
+ * @author Yegor Bugayenko (yegor256@gmail.com)
+ * @version $Id$
+ * @since 0.11
+ */
+public final class TkJoinedCookiesTest {
+
+    /**
+     * TkJoinedCookies can join cookies.
+     * @throws IOException If some problem inside
+     */
+    @Test
+    public void joinsCookies() throws IOException {
+        MatcherAssert.assertThat(
+            new RsPrint(
+                new TkJoinedCookies(
+                    new TkFixed(
+                        new RsWithHeaders(
+                            new RsText(),
+                            "Set-Cookie: a=1",
+                            "Set-cookie: b=1; Path=/"
+                        )
+                    )
+                ).act(new RqFake())
+            ).print(),
+            Matchers.containsString("Set-Cookie: a=1, b=1; Path=/")
+        );
+    }
+
+}