Changeset 6823 in josm for trunk/src/org/openstreetmap/josm/tools/Utils.java

Timestamp:

2014-02-07T01:34:02+01:00 (10 years ago)

Author:

bastiK

Message:

#8902 Small performance enhancements / coding style (patch by shinigami, parts)

patterns.diff: precompiled patterns
(only those parts applied, where performance may be relevant)

File:

• trunk/src/org/openstreetmap/josm/tools/Utils.java (modified) (11 diffs)

trunk/src/org/openstreetmap/josm/tools/Utils.java

@@ -41 +41 @@
 import java.util.List;
 import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 import java.util.zip.GZIPInputStream;
 import java.util.zip.ZipFile;
@@ -53 +54 @@
  */
 public final class Utils {
+
+    public static final Pattern WHITE_SPACES_PATTERN = Pattern.compile("\\s+");
 
     private Utils() {
@@ -318 +321 @@
      * @param in The source file
      * @param out The destination file
-     * @throws IOException If any I/O error occurs
+     * @throws java.io.IOException If any I/O error occurs
      */
     public static void copyFile(File in, File out) throws IOException  {
@@ -365 +368 @@
 
     /**
-     * <p>Utility method for closing a {@link Closeable} object.</p>
+     * <p>Utility method for closing a {@link java.io.Closeable} object.</p>
      *
      * @param c the closeable object. May be null.
@@ -379 +382 @@
 
     /**
-     * <p>Utility method for closing a {@link ZipFile}.</p>
+     * <p>Utility method for closing a {@link java.util.zip.ZipFile}.</p>
      *
      * @param zip the zip file. May be null.
@@ -577 +580 @@
     /**
      * Transforms the collection {@code c} into an unmodifiable collection and
-     * applies the {@link Function} {@code f} on each element upon access.
+     * applies the {@link org.openstreetmap.josm.tools.Utils.Function} {@code f} on each element upon access.
      * @param <A> class of input collection
      * @param <B> class of transformed collection
@@ -619 +622 @@
     /**
      * Transforms the list {@code l} into an unmodifiable list and
-     * applies the {@link Function} {@code f} on each element upon access.
+     * applies the {@link org.openstreetmap.josm.tools.Utils.Function} {@code f} on each element upon access.
      * @param <A> class of input collection
      * @param <B> class of transformed collection
@@ -644 +647 @@
     }
 
+    private static final Pattern HTTP_PREFFIX_PATTERN = Pattern.compile("https?");
+
     /**
      * Opens a HTTP connection to the given URL and sets the User-Agent property to JOSM's one.
      * @param httpURL The HTTP url to open (must use http:// or https://)
      * @return An open HTTP connection to the given URL
-     * @throws IOException if an I/O exception occurs.
+     * @throws java.io.IOException if an I/O exception occurs.
      * @since 5587
      */
     public static HttpURLConnection openHttpConnection(URL httpURL) throws IOException {
-        if (httpURL == null || !httpURL.getProtocol().matches("https?")) {
+        if (httpURL == null || !HTTP_PREFFIX_PATTERN.matcher(httpURL.getProtocol()).matches()) {
             throw new IllegalArgumentException("Invalid HTTP url");
         }
@@ -665 +670 @@
      * @param url The url to open
      * @return An stream for the given URL
-     * @throws IOException if an I/O exception occurs.
+     * @throws java.io.IOException if an I/O exception occurs.
      * @since 5867
      */
@@ -711 +716 @@
      * @param url The url to open
      * @return An buffered stream reader for the given URL (using UTF-8)
-     * @throws IOException if an I/O exception occurs.
+     * @throws java.io.IOException if an I/O exception occurs.
      * @since 5868
      */
@@ -736 +741 @@
      * @param keepAlive whether not to set header {@code Connection=close}
      * @return An open HTTP connection to the given URL
-     * @throws IOException if an I/O exception occurs.
+     * @throws java.io.IOException if an I/O exception occurs.
      * @since 5587
      */