[Sandev-cvs] sand/apps/basics/src/org/sandev/basics/util FileUtil.java, 1.2, 1.3

[Eric P. <th...@us...>]

Update of /cvsroot/sandev/sand/apps/basics/src/org/sandev/basics/util
In directory sfp-cvsdas-3.v30.ch3.sourceforge.com:/tmp/cvs-serv13012

Modified Files:
	FileUtil.java 
Log Message:
Added niocopyfile utility for channel based file copying.


Index: FileUtil.java
===================================================================
RCS file: /cvsroot/sandev/sand/apps/basics/src/org/sandev/basics/util/FileUtil.java,v
retrieving revision 1.2
retrieving revision 1.3
diff -C2 -d -r1.2 -r1.3
*** FileUtil.java	24 Jan 2010 21:01:37 -0000	1.2
--- FileUtil.java	30 Oct 2010 17:33:27 -0000	1.3
***************
*** 29,32 ****
--- 29,33 ----
  import java.io.BufferedOutputStream;
  import java.io.FileOutputStream;
+ import java.nio.channels.FileChannel;
  
  
***************
*** 53,67 ****
  
      /**
!      * Copy the specified file srcfile to outfile
       */
      public static void copyfile(File srcfile,File outfile)
              throws IOException
      {
!         OutputStream fileOut=null;
!         InputStream fileIn=null;
!         try {
              if(!srcfile.exists()) {
!                 throw new IOException(
!                     "copyfile srcfile " + srcfile + " not found."); }
              fileIn=new BufferedInputStream(new FileInputStream(srcfile));
              fileOut=new BufferedOutputStream(new FileOutputStream(outfile));
--- 54,78 ----
  
      /**
!      * Copy srcfile to outfile.
!      */
!     public static void copyfile(String srcfile,String outfile)
!             throws IOException
!     {
!         copyfile(new File(srcfile),new File(outfile));
!     }
! 
! 
!     /**
!      * Copy the specified srcfile to outfile using buffered streams
       */
      public static void copyfile(File srcfile,File outfile)
              throws IOException
      {
!  	OutputStream fileOut=null;
!  	InputStream fileIn=null;
!  	try {
              if(!srcfile.exists()) {
!                 throw new IOException("copyfile srcfile " + srcfile + 
!                                       " does not exist."); }
              fileIn=new BufferedInputStream(new FileInputStream(srcfile));
              fileOut=new BufferedOutputStream(new FileOutputStream(outfile));
***************
*** 70,78 ****
              while((bytesread=fileIn.read(buf))>0) {
                  fileOut.write(buf,0,bytesread); }
!         } finally {
              if(fileOut!=null) {
                  fileOut.close(); }
              if(fileIn!=null) {
                  fileIn.close(); }
          }
      }
--- 81,116 ----
              while((bytesread=fileIn.read(buf))>0) {
                  fileOut.write(buf,0,bytesread); }
!  	} finally {
              if(fileOut!=null) {
                  fileOut.close(); }
              if(fileIn!=null) {
                  fileIn.close(); }
+  	}
+     } 
+ 
+ 
+     /**
+      * Copy the specified srcfile to outfile using FileChannel direct
+      * transfer.
+      */
+     public static void niocopyfile(File srcfile,File outfile)
+             throws IOException
+     {
+         if(!srcfile.exists()) {
+             throw new IOException("copyfile srcfile " + srcfile + 
+                                   " does not exist."); }
+         if(!outfile.exists()) {
+             outfile.createNewFile(); }
+         FileChannel fcSrc=null;
+         FileChannel fcOut=null;
+         try {
+             fcSrc=new FileInputStream(srcfile).getChannel();
+             fcOut=new FileOutputStream(outfile).getChannel();
+             fcOut.transferFrom(fcSrc,0,fcSrc.size());
+         } finally {
+             if(fcSrc!=null) {
+                 fcSrc.close(); }
+             if(fcOut!=null) {
+                 fcOut.close(); }
          }
      }