X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Ffunction%2Fcache%2FTileSet.java;fp=src%2Ftim%2Fprune%2Ffunction%2Fcache%2FTileSet.java;h=525696e518e8566289b90cb11691930fbef9e2fc;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/function/cache/TileSet.java b/src/tim/prune/function/cache/TileSet.java
new file mode 100644
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+++ b/src/tim/prune/function/cache/TileSet.java
@@ -0,0 +1,136 @@
+package tim.prune.function.cache;
+
+import java.io.File;
+
+
+/**
+ * Class to hold information about a single tile set
+ * within the overall Tile Cache.
+ */
+public class TileSet
+{
+	/** Summary row info for whole tileset */
+	private RowInfo _rowInfo = null;
+	/** Path relative to mapcache root */
+	private String _path = null;
+	/** Comma-separated list of configs using this tileset */
+	private String _usedBy = null;
+
+
+	/**
+	 * Constructor
+	 * @param inDir directory of tileset
+	 * @param inPath String describing relative path from cache root
+	 * @param inUsedBy String describing which configs use this Tileset
+	 */
+	public TileSet(File inDir, String inPath, String inUsedBy)
+	{
+		_path = inPath;
+		_usedBy = inUsedBy;
+		_rowInfo = new RowInfo();
+		// Go through zoom directories and construct row info objects
+		if (inDir != null && inDir.exists() && inDir.isDirectory() && inDir.canRead())
+		{
+			for (File subdir : inDir.listFiles())
+			{
+				if (subdir != null && subdir.exists() && subdir.isDirectory()
+					&& subdir.canRead() && isNumeric(subdir.getName()))
+				{
+					RowInfo row = makeRowInfo(subdir);
+					_rowInfo.addRow(row);
+				}
+			}
+		}
+	}
+
+	/**
+	 * Check if a directory name is numeric
+	 * @param inName name of directory
+	 * @return true if it only contains characters 0-9
+	 */
+	public static boolean isNumeric(String inName)
+	{
+		if (inName == null || inName.equals("")) return false;
+		for (int i=0; i<inName.length(); i++)
+		{
+			char a = inName.charAt(i);
+			if (a < '0' || a > '9') return false;
+		}
+		return true;
+	}
+
+	/**
+	 * Check if a filename is numeric up until the first dot
+	 * This appears to be much faster than scanning for a . with indexOf, then
+	 * chopping to make a new String, and then calling isNumeric to scan through again
+	 * @param inName name of file
+	 * @return true if it only contains characters 0-9 before the first dot
+	 */
+	public static boolean isNumericUntilDot(String inName)
+	{
+		if (inName == null || inName.equals("") || inName.charAt(0) == '.') {
+			return false;
+		}
+		try
+		{
+			char c = '.';
+			int i = 0;
+			do
+			{
+				c = inName.charAt(i);
+				if (c == '.') return true; // found the dot, so stop
+				if (c < '0' || c > '9') return false; // not numeric
+				i++;
+			} while (c != '\0');
+		}
+		catch (IndexOutOfBoundsException iobe) {}
+		// Didn't find a dot, so can't be a valid name
+		return false;
+	}
+
+	/**
+	 * Make a RowInfo object from the given directory
+	 * @param inDir directory for a single zoom level
+	 * @return RowInfo object describing files and size
+	 */
+	private static RowInfo makeRowInfo(File inDir)
+	{
+		RowInfo row = new RowInfo();
+		row.setZoom(Integer.parseInt(inDir.getName()));
+		for (File subdir : inDir.listFiles())
+		{
+			if (subdir != null && subdir.exists() && subdir.isDirectory()
+				&& subdir.canRead() && isNumeric(subdir.getName()))
+			{
+				// Found a directory of images (finally!)
+				for (File f : subdir.listFiles())
+				{
+					if (f != null && f.exists() && f.isFile() && f.canRead())
+					{
+						if (isNumericUntilDot(f.getName())) {
+							row.addTile(f.length());
+						}
+					}
+				}
+			}
+		}
+		return row;
+	}
+
+	/**
+	 * @return row info object
+	 */
+	public RowInfo getRowInfo() {
+		return _rowInfo;
+	}
+
+	/** @return relative path to tileset */
+	public String getPath() {
+		return _path;
+	}
+
+	/** @return users of tileset */
+	public String getUsedBy() {
+		return _usedBy;
+	}
+}