fileutils.html

用JAVA编写的,在做实验的时候留下来的,本来想删的,但是传上来,大家分享吧

<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="copyFiles(java.io.File, java.io.File)"><!-- --></A><H3>
copyFiles</H3>
<PRE>
public static void <B>copyFiles</B>(java.io.File&nbsp;src,
                             java.io.File&nbsp;dest)
                      throws java.io.IOException</PRE>
<DL>
<DD>Recursively copy all files from one directory to another.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>src</CODE> - file or directory to copy from.<DD><CODE>dest</CODE> - file or directory to copy to.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getSortedDirContent(java.io.File, java.io.FilenameFilter)"><!-- --></A><H3>
getSortedDirContent</H3>
<PRE>
public static java.lang.String[] <B>getSortedDirContent</B>(java.io.File&nbsp;src,
                                                     java.io.FilenameFilter&nbsp;filter)</PRE>
<DL>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>src</CODE> - Directory of files to fetch.<DD><CODE>filter</CODE> - Filter to apply to filenames.
<DT><B>Returns:</B><DD>Files in directory sorted.</DL>
</DD>
</DL>
<HR>

<A NAME="copyFiles(java.io.File, java.io.FilenameFilter, java.io.File, boolean, boolean)"><!-- --></A><H3>
copyFiles</H3>
<PRE>
public static void <B>copyFiles</B>(java.io.File&nbsp;src,
                             java.io.FilenameFilter&nbsp;filter,
                             java.io.File&nbsp;dest,
                             boolean&nbsp;inSortedOrder,
                             boolean&nbsp;overwrite)
                      throws java.io.IOException</PRE>
<DL>
<DD>Recursively copy all files from one directory to another.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>src</CODE> - File or directory to copy from.<DD><CODE>filter</CODE> - Filename filter to apply to src. May be null if no
 filtering wanted.<DD><CODE>dest</CODE> - File or directory to copy to.<DD><CODE>inSortedOrder</CODE> - Copy in order of natural sort.<DD><CODE>overwrite</CODE> - If target file already exits, and this parameter is
 true, overwrite target file (We do this by first deleting the target
 file before we begin the copy).
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="copyFile(java.io.File, java.io.File)"><!-- --></A><H3>
copyFile</H3>
<PRE>
public static boolean <B>copyFile</B>(java.io.File&nbsp;src,
                               java.io.File&nbsp;dest)
                        throws java.io.FileNotFoundException,
                               java.io.IOException</PRE>
<DL>
<DD>Copy the src file to the destination.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>src</CODE> - <DD><CODE>dest</CODE> - 
<DT><B>Returns:</B><DD>True if the extent was greater than actual bytes copied.
<DT><B>Throws:</B>
<DD><CODE>java.io.FileNotFoundException</CODE>
<DD><CODE>java.io.IOException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="copyFile(java.io.File, java.io.File, boolean)"><!-- --></A><H3>
copyFile</H3>
<PRE>
public static boolean <B>copyFile</B>(java.io.File&nbsp;src,
                               java.io.File&nbsp;dest,
                               boolean&nbsp;overwrite)
                        throws java.io.FileNotFoundException,
                               java.io.IOException</PRE>
<DL>
<DD>Copy the src file to the destination.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>src</CODE> - <DD><CODE>dest</CODE> - <DD><CODE>overwrite</CODE> - If target file already exits, and this parameter is
 true, overwrite target file (We do this by first deleting the target
 file before we begin the copy).
<DT><B>Returns:</B><DD>True if the extent was greater than actual bytes copied.
<DT><B>Throws:</B>
<DD><CODE>java.io.FileNotFoundException</CODE>
<DD><CODE>java.io.IOException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="copyFile(java.io.File, java.io.File, long)"><!-- --></A><H3>
copyFile</H3>
<PRE>
public static boolean <B>copyFile</B>(java.io.File&nbsp;src,
                               java.io.File&nbsp;dest,
                               long&nbsp;extent)
                        throws java.io.FileNotFoundException,
                               java.io.IOException</PRE>
<DL>
<DD>Copy up to extent bytes of the source file to the destination
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>src</CODE> - <DD><CODE>dest</CODE> - <DD><CODE>extent</CODE> - Maximum number of bytes to copy
<DT><B>Returns:</B><DD>True if the extent was greater than actual bytes copied.
<DT><B>Throws:</B>
<DD><CODE>java.io.FileNotFoundException</CODE>
<DD><CODE>java.io.IOException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="copyFile(java.io.File, java.io.File, long, boolean)"><!-- --></A><H3>
copyFile</H3>
<PRE>
public static boolean <B>copyFile</B>(java.io.File&nbsp;src,
                               java.io.File&nbsp;dest,
                               long&nbsp;extent,
                               boolean&nbsp;overwrite)
                        throws java.io.FileNotFoundException,
                               java.io.IOException</PRE>
<DL>
<DD>Copy up to extent bytes of the source file to the destination
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>src</CODE> - <DD><CODE>dest</CODE> - <DD><CODE>extent</CODE> - Maximum number of bytes to copy<DD><CODE>overwrite</CODE> - If target file already exits, and this parameter is
 true, overwrite target file (We do this by first deleting the target
 file before we begin the copy).
<DT><B>Returns:</B><DD>True if the extent was greater than actual bytes copied.
<DT><B>Throws:</B>
<DD><CODE>java.io.FileNotFoundException</CODE>
<DD><CODE>java.io.IOException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="workaroundCopyFile(java.io.File, java.io.File)"><!-- --></A><H3>
workaroundCopyFile</H3>
<PRE>
protected static void <B>workaroundCopyFile</B>(java.io.File&nbsp;src,
                                         java.io.File&nbsp;dest)
                                  throws java.io.IOException</PRE>
<DL>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="deleteDir(java.io.File)"><!-- --></A><H3>
deleteDir</H3>
<PRE>
public static boolean <B>deleteDir</B>(java.io.File&nbsp;dir)</PRE>
<DL>
<DD>Deletes all files and subdirectories under dir.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>dir</CODE> - 
<DT><B>Returns:</B><DD>true if all deletions were successful. If a deletion fails, the
          method stops attempting to delete and returns false.</DL>
</DD>
</DL>
<HR>

<A NAME="readFileAsString(java.io.File)"><!-- --></A><H3>
readFileAsString</H3>
<PRE>
public static java.lang.String <B>readFileAsString</B>(java.io.File&nbsp;file)
                                         throws java.io.IOException</PRE>
<DL>
<DD>Utility method to read an entire file as a String.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>file</CODE> - 
<DT><B>Returns:</B><DD>File as String.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getFilesWithPrefix(java.io.File, java.lang.String)"><!-- --></A><H3>
getFilesWithPrefix</H3>
<PRE>
public static java.io.File[] <B>getFilesWithPrefix</B>(java.io.File&nbsp;dir,
                                                java.lang.String&nbsp;prefix)</PRE>
<DL>
<DD>Get a list of all files in directory that have passed prefix.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>dir</CODE> - Dir to look in.<DD><CODE>prefix</CODE> - Basename of files to look for. Compare is case insensitive.
<DT><B>Returns:</B><DD>List of files in dir that start w/ passed basename.</DL>
</DD>
</DL>
<HR>

<A NAME="getRegexpFileFilter(java.lang.String)"><!-- --></A><H3>
getRegexpFileFilter</H3>
<PRE>
public static java.io.FileFilter <B>getRegexpFileFilter</B>(java.lang.String&nbsp;regexp)</PRE>
<DL>
<DD>Get a @link java.io.FileFilter that filters files based on a regular
 expression.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>regexp</CODE> - the regular expression the files must match.
<DT><B>Returns:</B><DD>the newly created filter.</DL>
</DD>
</DL>
<HR>

<A NAME="syncDirectories(java.io.File, java.io.FilenameFilter, java.io.File)"><!-- --></A><H3>
syncDirectories</H3>
<PRE>
public static void <B>syncDirectories</B>(java.io.File&nbsp;src,
                                   java.io.FilenameFilter&nbsp;filter,
                                   java.io.File&nbsp;tgt)
                            throws java.io.IOException</PRE>
<DL>
<DD>Use for case where files are being added to src.  Will break off copy
 when tgt is same as src.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>src</CODE> - Source directory to copy from.<DD><CODE>tgt</CODE> - Target to copy to.<DD><CODE>filter</CODE> - Filter to apply to files to copy.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="isReadable(java.io.File)"><!-- --></A><H3>
isReadable</H3>
<PRE>
public static java.io.File <B>isReadable</B>(java.io.File&nbsp;f)
                               throws java.io.IOException</PRE>
<DL>
<DD>Test file exists and is readable.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>f</CODE> - File to test.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - If file does not exist or is not unreadable.</DL>
</DD>
</DL>
<HR>

<A NAME="isReadableWithExtensionAndMagic(java.io.File, java.lang.String, java.lang.String)"><!-- --></A><H3>
isReadableWithExtensionAndMagic</H3>
<PRE>
public static boolean <B>isReadableWithExtensionAndMagic</B>(java.io.File&nbsp;f,
                                                      java.lang.String&nbsp;uncompressedExtension,
                                                      java.lang.String&nbsp;magic)
                                               throws java.io.IOException</PRE>
<DL>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>f</CODE> - File to test.
<DT><B>Returns:</B><DD>True if file is readable, has uncompressed extension,
 and magic string at file start.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - If file does not exist or is not readable.</DL>
</DD>
</DL>
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