fileio.java

来自「一个简单的visio程序。」· Java 代码 · 共 189 行

package HPCore.stdfunc;

import HPCore.stdstmt.hpfileio;
import HPCore.Exception.*;
import HECore.stddata.*;
import java.util.*;

public class fileio{
  /**
   * Returns a date (VarType 7) that indicates the date and time when a 
   * file was created or last modified.
   *
   * The pathname argument is a string expression that specifies a filename.
   * The pathname may include the directory and the drive.   
   */
   static  final  char fseparator = System.getProperty("file.separator").charAt(0);

   public static HDate filedatetime(String pathname) throws HpException
   {
      String fname = pathname.replace('\\',fseparator);
      java.io.File file;
      long dt = 0;
      int hour;
      HDate time = new HDate(0);

      UdtDatetime Datetime = new UdtDatetime();
      //Calendar  calendar = Calendar.getInstance();

      file = new java.io.File(fname);

      if (file.exists() || file.isDirectory() )
      {
        dt = file.lastModified();

        Date date = new Date();
        date.setTime(dt);
        //calendar.setTime(date);

        //int am_pm = calendar.get( Calendar.AM_PM);
        int am_pm = date.getHours();
        if( System.getProperty("os.name").toLowerCase().compareTo("windows nt" )!=0 )
            hour = am_pm <= 12 ? (date.getHours()+20) : (date.getHours()+8);
        else
            hour = am_pm <= 12 ? (date.getHours()+12) : (date.getHours());

        int[]   m_VBDate = {date.getMonth()+1,
                            date.getDate(),
                            date.getYear(),
                            hour,//calendar.get(Calendar.HOUR)
                            date.getMinutes(),
                            date.getSeconds()
                            };
        GGRESULT  ddate = Datetime.dtcommon(m_VBDate);

        time = new HDate(ddate.valued+ddate.valuet);
      }
      else
         throw new HpException(53, "File not found");

      return time;
   }

  /**
   * Returns the size, in bytes, of a file opened using the Open statement.
   *
   * The filenumber argument is any valid file number.
   */
   public static int lof(short filenumber) throws HpException
   {
      return hpfileio.lof(filenumber);
   }

  /**
   * Returns the length of a file in bytes.
   *
   * The pathname argument is a string expression that specifies a file.  
   * The pathname may include the directory and the drive.   
   */
   public static int filelen(String pathname) throws HpException
   {
      return hpfileio.filelen(pathname);
   }

  /**
   * Returns a number representing the attributes of a file or directory.
   *
   * The pathname argument is a string expression that specifies a filename.
   * The pathname may include the directory and the drive.
   */
   public static int getattr(String pathname) throws HpException
   {
      return hpfileio.getattr(pathname);
   }

  /**
   * Returns file mode or operating system file handle information 
   * for files opened using the Open statement.
   *
   * filenumber	: Any valid file number.
   * returntype	: Number indicating the type of information to return.
   *                Specify 1 to return a value indicating the file mode.  
   *                Specify 2 to return the operating system file handle.
   */
   public static int fileattr(short filenumber,short returntype) throws HpException
   {
      return hpfileio.fileattr(filenumber,returntype);
   }

  /**
   * Returns a value that indicates whether the end of a file has been 
   * reached.
   *
   * The filenumber argument is any valid file number.
   */
   public static int eof(short filenumber) throws HpException
   {
      return hpfileio.eof(filenumber);
   }

  /**
   * Returns characters from an open sequential or binary file.
   *
   * number     : Any valid numeric expression specifying the number of 
   *              characters to return.
   * filenumber : Any valid file number.
   */
   public static Variant input(short number,short filenumber) throws HpException
   {
      return hpfileio.input(number,filenumber);
   }

  /**
   * Returns characters from an open sequential or binary file.
   *
   * number     : Any valid numeric expression specifying the number of 
   *              characters to return.
   * filenumber : Any valid file number.
   */
	public static String input$(short number,short filenumber) throws HpException
   {
      return hpfileio.input$(number,filenumber);
   }

  /**
   * Returns the current read/write position within an open file.
   *
   * The filenumber argument is any valid file number.
   */
   public static int loc(short filenumber) throws HpException 
   {
      return hpfileio.loc(filenumber);
   }

  /**
   * Returns the current read/write position within a file opened using
   * the Open statement.
   *
   * The filenumber argument is any valid file number.
   */
   public static int seek(short filenumber) throws HpException
   {
      return hpfileio.seek(filenumber);
   }

  /**
   * Returns the next file number available for use by the Open 
   * statement.
   *
   * The rangenumber argument specifies the range from which the next free 
   * file number is to be returned.  Specify a 0 (default) to return a file 
   * number in the range 1 to 255, inclusive.  Specify a 1 to return a file 
   * number in the range 256 to 511.
   */
   public static short freefile(short rangenumber) throws HpException
   {
      return hpfileio.freefile(rangenumber);
   }

  /**
   * Returns the next file number available for use by the Open 
   * statement.
   */
   public static short freefile() throws HpException
   {
      return hpfileio.freefile();
   }


}