ServletInputStream.java

package cn.dreampie.upload.multipart;

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

/**
 * Created by ice on 15-1-6.
 */
public abstract class ServletInputStream extends InputStream {
  protected ServletInputStream() {
  }

  public int readLine(byte[] b, int off, int len) throws IOException {
    if (len <= 0) {
      return 0;
    } else {
      int count = 0;

      int c;
      while ((c = this.read()) != -1) {
        b[off++] = (byte) c;
        ++count;
        if (c == 10 || count == len) {
          break;
        }
      }

      return count > 0 ? count : -1;
    }
  }
}