Method readln

src/main/java/io/xjar/XKit.java:33–52

从输入流中读取一行字节码 @param in 输入流 @return 最前面的一行字节码 @throws IOException I/O 异常

(InputStream in)

     * @throws IOException I/O 异常
     */
    public static byte[] readln(InputStream in) throws IOException {
        int b = in.read();
        if (b == -1) {
            return null;
        }
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        while (b != -1) {
            switch (b) {
                case '\r':
                    break;
                case '\n':
                    return bos.toByteArray();
                default:
                    bos.write(b);
                    break;
            }
            b = in.read();
        }
        return bos.toByteArray();
    }

    /**
     * 往输出流中写入一行字节码