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package com.clickntap.utils;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.springframework.util.StringUtils;

public class IOUtils extends org.apache.commons.io.IOUtils {

  public static void copy(InputStream in, OutputStream out, int offset, int length) throws IOException {
    in.skip(offset);
    int c;
    while (length > 0 && (c = in.read()) != -1) {
      out.write(c);
      length--;
    }
  }

  public static String toString(File file) throws IOException {
    return slashize(file.getCanonicalPath());
  }

  private static String slashize(String path) throws IOException {
    return StringUtils.replace(path, ConstUtils.BACKSLASH, ConstUtils.SLASH);
  }
}