rename epublib to book,库里面包含umd

book/src/main/java/me/ag2s/umdlib/tool/WrapOutputStream.java

@@ -0,0 +1,91 @@
+package me.ag2s.umdlib.tool;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+public class WrapOutputStream extends OutputStream {
+	
+	private final OutputStream os;
+	private int written;
+
+	public WrapOutputStream(OutputStream os) {
+		this.os = os;
+	}
+	
+    private void incCount(int value) {
+        int temp = written + value;
+        if (temp < 0) {
+            temp = Integer.MAX_VALUE;
+        }
+        written = temp;
+    }
+	
+    // it is different from the writeInt of DataOutputStream
+	public void writeInt(int v) throws IOException {
+        os.write((v >>>  0) & 0xFF);
+        os.write((v >>>  8) & 0xFF);
+        os.write((v >>> 16) & 0xFF);
+        os.write((v >>> 24) & 0xFF);
+		incCount(4);
+	}
+	
+	public void writeByte(byte b) throws IOException {
+		write(b);
+	}
+	
+	public void writeByte(int n) throws IOException {
+		write(n);
+	}
+	
+	public void writeBytes(byte ... bytes) throws IOException {
+		write(bytes);
+	}
+	
+	public void writeBytes(int ... vals) throws IOException {
+		for (int v : vals) {
+			write(v);
+		}
+	}
+
+	public void write(byte[] b, int off, int len) throws IOException {
+		os.write(b, off, len);
+		incCount(len);
+	}
+
+	public void write(byte[] b) throws IOException {
+		os.write(b);
+		incCount(b.length);
+	}
+
+	public void write(int b) throws IOException {
+		os.write(b);
+		incCount(1);
+	}
+	
+	/////////////////////////////////////////////////
+
+	public void close() throws IOException {
+		os.close();
+	}
+
+	public void flush() throws IOException {
+		os.flush();
+	}
+
+	public boolean equals(Object obj) {
+		return os.equals(obj);
+	}
+
+	public int hashCode() {
+		return os.hashCode();
+	}
+
+	public String toString() {
+		return os.toString();
+	}
+
+	public int getWritten() {
+		return written;
+	}
+
+}