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PathTool (plexus-utils API)
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org.codehaus.plexus.util</FONT>
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Class PathTool</H2>
<PRE>
java.lang.Object
  <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.codehaus.plexus.util.PathTool</B>
</PRE>
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<DL>
<DT><PRE>public class <B>PathTool</B><DT>extends java.lang.Object</DL>
</PRE>

<P>
Path tool contains static methods to assist in determining path-related
 information such as relative paths.
<P>

<P>
<DL>
<DT><B>Version:</B></DT>
  <DD>$Id: PathTool.java 8010 2009-01-07 12:59:50Z vsiveton $</DD>
<DT><B>Author:</B></DT>
  <DD><a href="mailto:pete-apache-dev@kazmier.com">Pete Kazmier</a>, <a href="mailto:vmassol@apache.org">Vincent Massol</a>, <a href="mailto:vincent.siveton@gmail.com">Vincent Siveton</a></DD>
</DL>
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<TD><CODE><B><A HREF="../../../../org/codehaus/plexus/util/PathTool.html#PathTool()">PathTool</A></B>()</CODE>

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<CODE>static&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/codehaus/plexus/util/PathTool.html#calculateLink(java.lang.String, java.lang.String)">calculateLink</A></B>(java.lang.String&nbsp;link,
              java.lang.String&nbsp;relativePath)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Calculates the appropriate link given the preferred link and the relativePath of the document.</TD>
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<CODE>static&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/codehaus/plexus/util/PathTool.html#getDirectoryComponent(java.lang.String)">getDirectoryComponent</A></B>(java.lang.String&nbsp;filename)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Determines the directory component of a filename.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/codehaus/plexus/util/PathTool.html#getRelativeFilePath(java.lang.String, java.lang.String)">getRelativeFilePath</A></B>(java.lang.String&nbsp;oldPath,
                    java.lang.String&nbsp;newPath)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This method can calculate the relative path between two pathes on a file system.</TD>
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<CODE>static&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/codehaus/plexus/util/PathTool.html#getRelativePath(java.lang.String)">getRelativePath</A></B>(java.lang.String&nbsp;filename)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Determines the relative path of a filename.</TD>
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<CODE>static&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/codehaus/plexus/util/PathTool.html#getRelativePath(java.lang.String, java.lang.String)">getRelativePath</A></B>(java.lang.String&nbsp;basedir,
                java.lang.String&nbsp;filename)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Determines the relative path of a filename from a base directory.</TD>
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<CODE>static&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/codehaus/plexus/util/PathTool.html#getRelativeWebPath(java.lang.String, java.lang.String)">getRelativeWebPath</A></B>(java.lang.String&nbsp;oldPath,
                   java.lang.String&nbsp;newPath)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This method can calculate the relative path between two pathes on a web site.</TD>
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<A NAME="PathTool()"><!-- --></A><H3>
PathTool</H3>
<PRE>
public <B>PathTool</B>()</PRE>
<DL>
</DL>

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<A NAME="getRelativePath(java.lang.String, java.lang.String)"><!-- --></A><H3>
getRelativePath</H3>
<PRE>
public static final java.lang.String <B>getRelativePath</B>(java.lang.String&nbsp;basedir,
                                                     java.lang.String&nbsp;filename)</PRE>
<DL>
<DD>Determines the relative path of a filename from a base directory.
 This method is useful in building relative links within pages of
 a web site.  It provides similar functionality to Anakia's
 <code>$relativePath</code> context variable.  The arguments to
 this method may contain either forward or backward slashes as
 file separators.  The relative path returned is formed using
 forward slashes as it is expected this path is to be used as a
 link in a web page (again mimicking Anakia's behavior).
 <p/>
 This method is thread-safe.
 <br/>
 <pre>
 PathTool.getRelativePath( null, null )                                   = ""
 PathTool.getRelativePath( null, "/usr/local/java/bin" )                  = ""
 PathTool.getRelativePath( "/usr/local/", null )                          = ""
 PathTool.getRelativePath( "/usr/local/", "/usr/local/java/bin" )         = ".."
 PathTool.getRelativePath( "/usr/local/", "/usr/local/java/bin/java.sh" ) = "../.."
 PathTool.getRelativePath( "/usr/local/java/bin/java.sh", "/usr/local/" ) = ""
 </pre>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>basedir</CODE> - The base directory.<DD><CODE>filename</CODE> - The filename that is relative to the base
 directory.
<DT><B>Returns:</B><DD>The relative path of the filename from the base
 directory.  This value is not terminated with a forward slash.
 A zero-length string is returned if: the filename is not relative to
 the base directory, <code>basedir</code> is null or zero-length,
 or <code>filename</code> is null or zero-length.</DL>
</DD>
</DL>
<HR>

<A NAME="getRelativePath(java.lang.String)"><!-- --></A><H3>
getRelativePath</H3>
<PRE>
public static final java.lang.String <B>getRelativePath</B>(java.lang.String&nbsp;filename)</PRE>
<DL>
<DD>Determines the relative path of a filename.  This method is
 useful in building relative links within pages of a web site.  It
 provides similar functionality to Anakia's
 <code>$relativePath</code> context variable.  The argument to
 this method may contain either forward or backward slashes as
 file separators.  The relative path returned is formed using
 forward slashes as it is expected this path is to be used as a
 link in a web page (again mimicking Anakia's behavior).
 <p/>
 This method is thread-safe.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>filename</CODE> - The filename to be parsed.
<DT><B>Returns:</B><DD>The relative path of the filename. This value is not
 terminated with a forward slash.  A zero-length string is
 returned if: <code>filename</code> is null or zero-length.<DT><B>See Also:</B><DD><A HREF="../../../../org/codehaus/plexus/util/PathTool.html#getRelativeFilePath(java.lang.String, java.lang.String)"><CODE>getRelativeFilePath(String, String)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getDirectoryComponent(java.lang.String)"><!-- --></A><H3>
getDirectoryComponent</H3>
<PRE>
public static final java.lang.String <B>getDirectoryComponent</B>(java.lang.String&nbsp;filename)</PRE>
<DL>
<DD>Determines the directory component of a filename.  This is useful
 within DVSL templates when used in conjunction with the DVSL's
 <code>$context.getAppValue("infilename")</code> to get the
 current directory that is currently being processed.
 <p/>
 This method is thread-safe.
 <br/>
 <pre>
 PathTool.getDirectoryComponent( null )                                   = ""
 PathTool.getDirectoryComponent( "/usr/local/java/bin" )                  = "/usr/local/java"
 PathTool.getDirectoryComponent( "/usr/local/java/bin/" )                 = "/usr/local/java/bin"
 PathTool.getDirectoryComponent( "/usr/local/java/bin/java.sh" )          = "/usr/local/java/bin"
 </pre>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>filename</CODE> - The filename to be parsed.
<DT><B>Returns:</B><DD>The directory portion of the <code>filename</code>.  If
 the filename does not contain a directory component, "." is
 returned.</DL>
</DD>
</DL>
<HR>

<A NAME="calculateLink(java.lang.String, java.lang.String)"><!-- --></A><H3>
calculateLink</H3>
<PRE>
public static final java.lang.String <B>calculateLink</B>(java.lang.String&nbsp;link,
                                                   java.lang.String&nbsp;relativePath)</PRE>
<DL>
<DD>Calculates the appropriate link given the preferred link and the relativePath of the document.
 <br/>
 <pre>
 PathTool.calculateLink( "/index.html", "../.." )                                        = "../../index.html"
 PathTool.calculateLink( "http://plexus.codehaus.org/plexus-utils/index.html", "../.." ) = "http://plexus.codehaus.org/plexus-utils/index.html"
 PathTool.calculateLink( "/usr/local/java/bin/java.sh", "../.." )                        = "../../usr/local/java/bin/java.sh"
 PathTool.calculateLink( "../index.html", "/usr/local/java/bin" )                        = "/usr/local/java/bin/../index.html"
 PathTool.calculateLink( "../index.html", "http://plexus.codehaus.org/plexus-utils" )    = "http://plexus.codehaus.org/plexus-utils/../index.html"
 </pre>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>link</CODE> - <DD><CODE>relativePath</CODE> - 
<DT><B>Returns:</B><DD>String</DL>
</DD>
</DL>
<HR>

<A NAME="getRelativeWebPath(java.lang.String, java.lang.String)"><!-- --></A><H3>
getRelativeWebPath</H3>
<PRE>
public static final java.lang.String <B>getRelativeWebPath</B>(java.lang.String&nbsp;oldPath,
                                                        java.lang.String&nbsp;newPath)</PRE>
<DL>
<DD>This method can calculate the relative path between two pathes on a web site.
 <br/>
 <pre>
 PathTool.getRelativeWebPath( null, null )                                          = ""
 PathTool.getRelativeWebPath( null, "http://plexus.codehaus.org/" )                 = ""
 PathTool.getRelativeWebPath( "http://plexus.codehaus.org/", null )                 = ""
 PathTool.getRelativeWebPath( "http://plexus.codehaus.org/",
                      "http://plexus.codehaus.org/plexus-utils/index.html" )        = "plexus-utils/index.html"
 PathTool.getRelativeWebPath( "http://plexus.codehaus.org/plexus-utils/index.html",
                      "http://plexus.codehaus.org/"                                 = "../../"
 </pre>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>oldPath</CODE> - <DD><CODE>newPath</CODE> - 
<DT><B>Returns:</B><DD>a relative web path from <code>oldPath</code>.</DL>
</DD>
</DL>
<HR>

<A NAME="getRelativeFilePath(java.lang.String, java.lang.String)"><!-- --></A><H3>
getRelativeFilePath</H3>
<PRE>
public static final java.lang.String <B>getRelativeFilePath</B>(java.lang.String&nbsp;oldPath,
                                                         java.lang.String&nbsp;newPath)</PRE>
<DL>
<DD>This method can calculate the relative path between two pathes on a file system.
 <br/>
 <pre>
 PathTool.getRelativeFilePath( null, null )                                   = ""
 PathTool.getRelativeFilePath( null, "/usr/local/java/bin" )                  = ""
 PathTool.getRelativeFilePath( "/usr/local", null )                           = ""
 PathTool.getRelativeFilePath( "/usr/local", "/usr/local/java/bin" )          = "java/bin"
 PathTool.getRelativeFilePath( "/usr/local", "/usr/local/java/bin/" )         = "java/bin"
 PathTool.getRelativeFilePath( "/usr/local/java/bin", "/usr/local/" )         = "../.."
 PathTool.getRelativeFilePath( "/usr/local/", "/usr/local/java/bin/java.sh" ) = "java/bin/java.sh"
 PathTool.getRelativeFilePath( "/usr/local/java/bin/java.sh", "/usr/local/" ) = "../../.."
 PathTool.getRelativeFilePath( "/usr/local/", "/bin" )                        = "../../bin"
 PathTool.getRelativeFilePath( "/bin", "/usr/local/" )                        = "../usr/local"
 </pre>
 Note: On Windows based system, the <code>/</code> character should be replaced by <code>\</code> character.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>oldPath</CODE> - <DD><CODE>newPath</CODE> - 
<DT><B>Returns:</B><DD>a relative file path from <code>oldPath</code>.</DL>
</DD>
</DL>
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