[Archive-access-cvs] SF.net SVN: archive-access: [2126] trunk/archive-access/projects/wayback/ wayback-core/src/main/java/org/archive/wayback/util

[<bra...@us...>]

Revision: 2126
          http://archive-access.svn.sourceforge.net/archive-access/?rev=2126&view=rev
Author:   bradtofel
Date:     2008-01-14 17:39:58 -0800 (Mon, 14 Jan 2008)

Log Message:
-----------
REFACTOR: moved isAuthority() and resolveUrl() from the generic UrlCanonicalizer class, in preparation for making UrlCanonicalizers configurable.

Added Paths:
-----------
    trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/util/url/
    trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/util/url/UrlOperations.java

Added: trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/util/url/UrlOperations.java
===================================================================
--- trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/util/url/UrlOperations.java	                        (rev 0)
+++ trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/util/url/UrlOperations.java	2008-01-15 01:39:58 UTC (rev 2126)
@@ -0,0 +1,76 @@
+package org.archive.wayback.util.url;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.apache.commons.httpclient.URIException;
+import org.archive.net.UURI;
+import org.archive.net.UURIFactory;
+
+/**
+ * Class containing common static URL methods. Primarily resolveUrl() and 
+ * the (currently) unused isAuthority().
+ *
+ * @author brad
+ * @version $Date$, $Revision$
+ */
+public class UrlOperations {
+	
+	private static final String CC_TLDS = "ac|ad|ae|af|ag|ai|al|am|an|ao|aq" +
+			"|ar|as|at|au|aw|ax|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|bs" +
+			"|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cu|cv|cx" +
+			"|cy|cz|de|dj|dk|dm|do|dz|ec|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo" +
+			"|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|gy|hk" +
+			"|hm|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|ke|kg" +
+			"|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma" +
+			"|mc|md|me|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz" +
+			"|na|nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm" +
+			"|pn|pr|ps|pt|pw|py|qa|re|ro|rs|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj" +
+			"|sk|sl|sm|sn|so|sr|st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tl|tm|tn" +
+			"|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu" +
+			"|wf|ws|ye|yt|yu|za|zm|zw";
+	
+	private static final String GEN_TLDS = "aero|biz|cat|com|coop|edu|gov" +
+			"|info|int|jobs|mil|mobi|museum|name|net|org|pro|travel";
+	
+	
+	private static final String ALL_TLD_PATTERN = CC_TLDS + "|" + GEN_TLDS;
+
+	private static final String IP_PATTERN = "[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+";
+	
+    private static final Pattern AUTHORITY_REGEX =
+        Pattern.compile("(([0-9a-z_.-]+)\\.(" + ALL_TLD_PATTERN + "))|" +
+        		"(" + IP_PATTERN + ")");
+
+    /**
+	 * @param urlPart
+	 * @return boolean indicating whether urlPart might be an Authority.
+	 */
+	public static boolean isAuthority(String urlPart) {
+		Matcher m = AUTHORITY_REGEX.matcher(urlPart);
+		
+		return (m != null) && m.matches();
+	}
+	
+	/**
+	 * @param baseUrl
+	 * @param url
+	 * @return url resolved against baseUrl, unless it is absolute already
+	 */
+	public static String resolveUrl(String baseUrl, String url) {
+		// TODO: this only works for http://
+		if(url.startsWith("http://")) {
+			return url;
+		}
+		UURI absBaseURI;
+		UURI resolvedURI = null;
+		try {
+			absBaseURI = UURIFactory.getInstance(baseUrl);
+			resolvedURI = UURIFactory.getInstance(absBaseURI, url);
+		} catch (URIException e) {
+			e.printStackTrace();
+			return url;
+		}
+		return resolvedURI.getEscapedURI();
+	}
+}


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