From 998877b8d6253f5507e58b158e5ac325f08d3e33 Mon Sep 17 00:00:00 2001
From: Yegor Bugayenko <yegor@tpc2.com>
Date: Mon, 29 Apr 2013 11:28:41 +0200
Subject: [PATCH] closes #236

---
 src/main/java/com/jcabi/log/TextDecor.java    | 17 ++++++++-----
 .../java/com/jcabi/log/TextDecorTest.java     | 24 +++++++++++++++++++
 2 files changed, 35 insertions(+), 6 deletions(-)

diff --git a/src/main/java/com/jcabi/log/TextDecor.java b/src/main/java/com/jcabi/log/TextDecor.java
index 1af3a203..3b10bbf9 100644
--- a/src/main/java/com/jcabi/log/TextDecor.java
+++ b/src/main/java/com/jcabi/log/TextDecor.java
@@ -55,7 +55,7 @@ final class TextDecor implements Formattable {
     /**
      * Maximum length to show.
      */
-    private static final int MAX = 100;
+    public static final int MAX = 100;
 
     /**
      * The object.
@@ -94,12 +94,17 @@ private static String pretty(final String text) {
         if (text.length() < TextDecor.MAX) {
             result = text;
         } else {
-            result = String.format(
-                "%s...%s (%d chars)",
-                text.substring(0, (TextDecor.MAX / 2) - 2),
-                text.substring(text.length() - (TextDecor.MAX / 2) + 1),
-                text.length()
+            final int skip = text.length() - TextDecor.MAX;
+            final StringBuilder output = new StringBuilder()
+                .append(text.substring(0, (text.length() - skip) / 2))
+                // @checkstyle MultipleStringLiterals (1 line)
+                .append("..")
+                .append(skip)
+                .append("..");
+            output.append(
+                text.substring(text.length() - TextDecor.MAX + output.length())
             );
+            result = output.toString();
         }
         return StringEscapeUtils.escapeJava(result);
     }
diff --git a/src/test/java/com/jcabi/log/TextDecorTest.java b/src/test/java/com/jcabi/log/TextDecorTest.java
index da731b16..16196ff0 100644
--- a/src/test/java/com/jcabi/log/TextDecorTest.java
+++ b/src/test/java/com/jcabi/log/TextDecorTest.java
@@ -32,6 +32,11 @@
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Formattable;
+import java.util.Formatter;
+import org.apache.commons.lang3.StringUtils;
+import org.hamcrest.MatcherAssert;
+import org.hamcrest.Matchers;
+import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.Parameterized;
 import org.junit.runners.Parameterized.Parameters;
@@ -75,6 +80,25 @@ public static Collection<Object[]> params() {
         );
     }
 
+    /**
+     * Test for a long text.
+     */
+    @Test
+    public void compressesLongText() {
+        final int len = 1000;
+        final String text = StringUtils.repeat('x', len);
+        final Formattable fmt = new TextDecor(text);
+        final StringBuilder output = new StringBuilder();
+        fmt.formatTo(new Formatter(output), 0, 0, 0);
+        MatcherAssert.assertThat(
+            output.toString().length(),
+            Matchers.describedAs(
+                output.toString(),
+                Matchers.equalTo(TextDecor.MAX)
+            )
+        );
+    }
+
     /**
      * {@inheritDoc}
      */