Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import java.io.IOException;
import java.io.InputStream;

public class Main {

    public static final String readFix(InputStream in, int fix) throws IOException {
        if (fix <= 0)
            return null;
        byte[] bb = new byte[fix];
        stmTryRead(in, bb, fix);
        return new String(bb);
    }

    /**
     * read fix length bytes from inputstream
     * 
     * @param in
     * @param fix
     * @return
     * @throws IOException
     */
    public static final String readFix(InputStream in, int fix, String charset) throws IOException {
        if (fix <= 0)
            return null;
        byte[] bb = new byte[fix];
        stmTryRead(in, bb, fix);
        return new String(bb, charset);
    }

    public static final int stmTryRead(InputStream in, byte[] bb) throws IOException {
        if ((in == null) || (bb == null) || (bb.length == 0))
            return 0;
        return stmTryRead(in, bb, bb.length);
    }

    public static final int stmTryRead(InputStream in, byte[] bb, int len) throws IOException {
        return stmTryRead(in, bb, 0, len);
    }

    public static int stmTryRead(InputStream in, byte[] bb, int off, int len) throws IOException {
        int r;
        int l = 0;
        int t = off;
        while ((r = in.read(bb, t, len - l)) >= 0) {
            t += r;
            l += r;
            if (l == len) {
                break;
            }
        }
        return l;
    }
}