X-Git-Url: https://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fgui%2Fmap%2FSiteNameUtils.java;fp=src%2Ftim%2Fprune%2Fgui%2Fmap%2FSiteNameUtils.java;h=cf53f728198854878753dd88a1fc8f5f7f13e4e8;hp=0000000000000000000000000000000000000000;hb=cd5dd0c207b676067e85e0885b90f05445b7e229;hpb=1db53356139320890a8d10e982865a1899e11b81

diff --git a/src/tim/prune/gui/map/SiteNameUtils.java b/src/tim/prune/gui/map/SiteNameUtils.java
new file mode 100644
index 0000000..cf53f72
--- /dev/null
+++ b/src/tim/prune/gui/map/SiteNameUtils.java
@@ -0,0 +1,73 @@
+package tim.prune.gui.map;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * Helper functions for manipulating tile site names
+ */
+public abstract class SiteNameUtils
+{
+	/** Regular expression for catching server wildcards */
+	private static final Pattern WILD_PATTERN = Pattern.compile("^(.*)\\[(.*)\\](.*)$");
+
+
+	/**
+	 * If the base url contains something like [1234], then pick a server
+	 * @param inBaseUrl base url
+	 * @return modified base url
+	 */
+	public static String pickServerUrl(String inBaseUrl)
+	{
+		if (inBaseUrl == null || inBaseUrl.indexOf('[') < 0) {
+			return inBaseUrl;
+		}
+		// Check for [.*] (once only)
+		// Only need to support one, make things a bit easier
+		final Matcher matcher = WILD_PATTERN.matcher(inBaseUrl);
+		// if not, return base url unchanged
+		if (!matcher.matches()) {
+			return inBaseUrl;
+		}
+		// if so, pick one at random and replace in the String
+		final String match = matcher.group(2);
+		final int numMatches = match.length();
+		String server = null;
+		if (numMatches > 0)
+		{
+			int matchNum = (int) Math.floor(Math.random() * numMatches);
+			server = "" + match.charAt(matchNum);
+		}
+		final String result = matcher.group(1) + (server==null?"":server) + matcher.group(3);
+		return result;
+	}
+
+
+	/**
+	 * Fix the site name by stripping off protocol and www.
+	 * This is used to create the file path for disk caching
+	 * @param inUrl url to strip
+	 * @return stripped url
+	 */
+	public static String convertUrlToDirectory(String inUrl)
+	{
+		if (inUrl == null || inUrl.equals("")) {return null;}
+		String url = inUrl.toLowerCase();
+		int idx = url.indexOf("://");
+		if (idx >= 0) {url = url.substring(idx + 3);}
+		if (url.startsWith("www.")) {url = url.substring(4);}
+		// Strip out any "[.*]" as well
+		if (url.indexOf('[') >= 0)
+		{
+			Matcher matcher = WILD_PATTERN.matcher(url);
+			if (matcher.matches())
+			{
+				url = matcher.group(1) + matcher.group(3);
+				if (url.length() > 1 && url.charAt(0) == '.') {
+					url = url.substring(1);
+				}
+			}
+		}
+		return url;
+	}
+}