speed up UrlFilter

platform/lang-api/src/com/intellij/execution/filters/UrlFilter.java

@@ -32,6 +32,8 @@ public class UrlFilter implements Filter {
   @Nullable
   @Override
   public Result applyFilter(String line, int entireLength) {
+    if (!URLUtil.canContainUrl(line)) return null;
+
     int textStartOffset = entireLength - line.length();
     Matcher m = URLUtil.URL_PATTERN.matcher(line);
     ResultItem item = null;

platform/util/src/com/intellij/util/io/URLUtil.java

@@ -47,6 +47,13 @@ public class URLUtil {
 
   private URLUtil() { }
 
+  /**
+   * @return if false, then the line contains no URL; if true, then more heavy {@link #URL_PATTERN} check should be used.
+   */
+  public static boolean canContainUrl(@NotNull String line) {
+    return line.contains("mailto:") || line.contains("://") || line.contains("www.");
+  }
+
   /**
    * Opens a url stream. The semantics is the sames as {@link URL#openStream()}. The
    * separate method is needed, since jar URLs open jars via JarFactory and thus keep them

platform/util/testSrc/com/intellij/util/io/UrlUtilTest.java

@@ -86,14 +86,19 @@ public class UrlUtilTest {
   
   private static void doUrlTest(@NotNull final String line, @Nullable final String expectedUrl) {
     final Matcher matcher = URLUtil.URL_PATTERN.matcher(line);
+    boolean found = matcher.find();
     if (expectedUrl == null) {
-      if (matcher.find()) {
+      if (found) {
         fail("No URL expected in [" + line + "], detected: " + matcher.group());
       }
       return;
     }
 
-    assertTrue("Expected URL (" + expectedUrl + ") is not detected in [" + line + "]", matcher.find());
+    if (!URLUtil.canContainUrl(line) && found) {
+      fail("canContainUrl returns false for " + line);
+    }
+
+    assertTrue("Expected URL (" + expectedUrl + ") is not detected in [" + line + "]", found);
     assertEquals("Text: [" + line + "]", expectedUrl, matcher.group());
   }