1 files changed, 52 insertions, 0 deletions
diff --git a/src/org/happysanta/gd/Levels/Reader.java b/src/org/happysanta/gd/Levels/Reader.java
new file mode 100644
index 0000000..f0ce9a6
--- /dev/null
+++ b/src/org/happysanta/gd/Levels/Reader.java
@@ -0,0 +1,52 @@
+package org.happysanta.gd.Levels;
+
+import java.io.DataInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import static org.happysanta.gd.Helpers.decodeCp1251;
+
+public class Reader {
+
+	private static final int MAX_VALID_TRACKS = 16384;
+
+	public static LevelHeader readHeader(InputStream in) throws IOException {
+		LevelHeader header = new LevelHeader();
+		DataInputStream din = new DataInputStream(in);
+		byte buf[] = new byte[40];
+		String tmp;
+		for (int i = 0; i < 3; i++) {
+			int tCount = din.readInt();
+			if (tCount > MAX_VALID_TRACKS) {
+				din.close();
+				throw new IOException("Level file is not valid");
+			}
+			header.setCount(i, tCount);
+
+			label0:
+			for (int j = 0; j < header.getCount(i); j++) {
+				int trackPointer = din.readInt();
+				header.setPointer(i, j, trackPointer);
+				int nameLen = 0;
+				do {
+					if (nameLen >= 40)
+						continue label0;
+
+					buf[nameLen] = din.readByte();
+					if (buf[nameLen] == 0) {
+						// tmp = (new String(buf, 0, nameLen, "CP-1251"));
+						tmp = decodeCp1251(buf);
+						header.setName(i, j, tmp.replace('_', ' '));
+						continue label0;
+					}
+					nameLen++;
+				} while (true);
+			}
+
+		}
+		din.close();
+
+		return header;
+	}
+
+}