X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fgui%2Fmap%2FMapSource.java;fp=src%2Ftim%2Fprune%2Fgui%2Fmap%2FMapSource.java;h=c4e294665e128def7d1fcbfb048cb516624d5d00;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/gui/map/MapSource.java b/src/tim/prune/gui/map/MapSource.java
new file mode 100644
index 0000000..c4e2946
--- /dev/null
+++ b/src/tim/prune/gui/map/MapSource.java
@@ -0,0 +1,174 @@
+package tim.prune.gui.map;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * Class to represent any map source, whether an OsmMapSource
+ * or one of the more complicated ones.
+ * Map sources may contain just one or several layers, and may
+ * build their URLs in different ways depending on the source
+ */
+public abstract class MapSource
+{
+	/** File extensions */
+	protected String[] _extensions = null;
+
+	/** Regular expression for catching server wildcards */
+	protected static final Pattern WILD_PATTERN = Pattern.compile("^(.*)\\[(.*)\\](.*)$");
+
+
+	/**
+	 * @return the number of layers used in this source
+	 */
+	public abstract int getNumLayers();
+
+	/**
+	 * @return the name of the source
+	 */
+	public abstract String getName();
+
+	/**
+	 * @return the base url for the specified layer
+	 */
+	public abstract String getBaseUrl(int inLayerNum);
+
+	/**
+	 * @return the site name for the specified layer
+	 */
+	public abstract String getSiteName(int inLayerNum);
+
+	/**
+	 * @return the file extension for the specified layer
+	 */
+	public final String getFileExtension(int inLayerNum) {
+		return _extensions[inLayerNum];
+	}
+
+	/**
+	 * Make the URL to get the specified tile
+	 * @param inLayerNum number of layer, from 0 (base) to getNumLayers-1 (top)
+	 * @param inZoom zoom level
+	 * @param inX x coordinate of tile
+	 * @param inY y coordinate of tile
+	 * @return URL as string
+	 */
+	public abstract String makeURL(int inLayerNum, int inZoom, int inX, int inY);
+
+	/**
+	 * @return the maximum zoom level for this source
+	 */
+	public abstract int getMaxZoomLevel();
+
+	/**
+	 * Make a relative file path from the base directory including site name
+	 * @param inLayerNum layer number
+	 * @param inZoom zoom level
+	 * @param inX x coordinate
+	 * @param inY y coordinate
+	 * @return relative file path as String
+	 */
+	public String makeFilePath(int inLayerNum, int inZoom, int inX, int inY)
+	{
+		return getSiteName(inLayerNum) + inZoom + "/" + inX + "/" + inY + "." + getFileExtension(inLayerNum);
+	}
+
+	/**
+	 * Checks the given url for having the right prefix and trailing slash
+	 * @param inUrl url to check
+	 * @return validated url with correct prefix and trailing slash, or null
+	 */
+	public static String fixBaseUrl(String inUrl)
+	{
+		if (inUrl == null || inUrl.equals("")) {return null;}
+		String urlstr = inUrl;
+		boolean urlOk = false;
+
+		// check prefix
+		try
+		{
+			urlOk = new URL(urlstr.replace('[', 'w').replace(']', 'w')).toString() != null;
+		}
+		catch (MalformedURLException e)
+		{
+			urlOk = false;
+		}
+
+		if (!urlOk)
+		{
+			// fail if protocol specified
+			if (urlstr.indexOf("://") >= 0) {return null;}
+			// add the http protocol
+			urlstr = "http://" + urlstr;
+		}
+		// check trailing /
+		if (!urlstr.endsWith("/")) {
+			urlstr = urlstr + "/";
+		}
+		// Validate current url, return null if not ok
+		try
+		{
+			URL url = new URL(urlstr.replace('[', 'w').replace(']', 'w'));
+			// url host must contain a dot
+			if (url.getHost().indexOf('.') < 0) {return null;}
+		}
+		catch (MalformedURLException e) {
+			urlstr = null;
+		}
+		return urlstr;
+	}
+
+	/**
+	 * 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
+	 */
+	protected static String fixSiteName(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;
+	}
+
+	/**
+	 * @return string which can be written to the Config
+	 */
+	public abstract String getConfigString();
+
+	/**
+	 * @return semicolon-separated list of base urls and extensions in order
+	 */
+	public String getSiteStrings()
+	{
+		StringBuilder sb = new StringBuilder();
+		for (int i=0; i<getNumLayers(); i++)
+		{
+			String url = getBaseUrl(i);
+			if (url != null)
+			{
+				sb.append(url);
+				sb.append(';');
+				sb.append(getFileExtension(i));
+				sb.append(';');
+			}
+		}
+		return sb.toString();
+	}
+}