org.codehaus.plexus.util.DirectoryScanner Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of spring-cloud-contract-shade Show documentation
Show all versions of spring-cloud-contract-shade Show documentation
Spring Cloud Contract Shaded Dependencies
/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.codehaus.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "Ant" and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [email protected].
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* File.separator ('/' under UNIX, '\' under Windows).
* For example, "abc/def/ghi/xyz.java" is split up in the segments "abc",
* "def","ghi" and "xyz.java".
* The same is done for the pattern against which should be matched.
*
* The segments of the name and the pattern are then matched against each
* other. When '**' is used for a path segment in the pattern, it matches
* zero or more path segments of the name.
*
* There is a special case regarding the use of File.separators
* at the beginning of the pattern and the string to match:
* When a pattern starts with a File.separator, the string
* to match must also start with a File.separator.
* When a pattern does not start with a File.separator, the
* string to match may not start with a File.separator.
* When one of these rules is not obeyed, the string will not
* match.
*
* When a name path segment is matched against a pattern path segment, the
* following special characters can be used:
* '*' matches zero or more characters
* '?' matches one character.
*
* Examples:
*
* "**\*.class" matches all .class files/dirs in a directory tree.
*
* "test\a??.java" matches all files/dirs which start with an 'a', then two
* more characters and then ".java", in a directory called test.
*
* "**" matches everything in a directory tree.
*
* "**\test\**\XYZ*" matches all files/dirs which start with "XYZ" and where
* there is a parent directory called test (e.g. "abc\test\def\ghi\XYZ123").
*
* Case sensitivity may be turned off if necessary. By default, it is
* turned on.
*
* Example of usage:
*
* String[] includes = {"**\\*.class"};
* String[] excludes = {"modules\\*\\**"};
* ds.setIncludes(includes);
* ds.setExcludes(excludes);
* ds.setBasedir(new File("test"));
* ds.setCaseSensitive(true);
* ds.scan();
*
* System.out.println("FILES:");
* String[] files = ds.getIncludedFiles();
* for (int i = 0; i < files.length; i++) {
* System.out.println(files[i]);
* }
*
* This will scan a directory called test for .class files, but excludes all
* files in all proper subdirectories of a directory called "modules"
*
* @author Arnout J. Kuiper
* [email protected]
* @author Magesh Umasankar
* @author Bruce Atherton
* @author Antoine Levy-Lambert
*/
public class DirectoryScanner
extends AbstractScanner
{
/**
* The base directory to be scanned.
*/
protected File basedir;
/**
* The files which matched at least one include and no excludes
* and were selected.
*/
protected Vector filesIncluded;
/**
* The files which did not match any includes or selectors.
*/
protected Vector filesNotIncluded;
/**
* The files which matched at least one include and at least
* one exclude.
*/
protected Vector filesExcluded;
/**
* The directories which matched at least one include and no excludes
* and were selected.
*/
protected Vector dirsIncluded;
/**
* The directories which were found and did not match any includes.
*/
protected Vector dirsNotIncluded;
/**
* The directories which matched at least one include and at least one
* exclude.
*/
protected Vector dirsExcluded;
/**
* The files which matched at least one include and no excludes and
* which a selector discarded.
*/
protected Vector filesDeselected;
/**
* The directories which matched at least one include and no excludes
* but which a selector discarded.
*/
protected Vector dirsDeselected;
/**
* Whether or not our results were built by a slow scan.
*/
protected boolean haveSlowResults = false;
/**
* Whether or not symbolic links should be followed.
*
* @since Ant 1.5
*/
private boolean followSymlinks = true;
/**
* Whether or not everything tested so far has been included.
*/
protected boolean everythingIncluded = true;
private final String[] tokenizedEmpty = MatchPattern.tokenizePathToString( "", File.separator );
/**
* Sole constructor.
*/
public DirectoryScanner()
{
}
/**
* Sets the base directory to be scanned. This is the directory which is
* scanned recursively. All '/' and '\' characters are replaced by
* File.separatorChar, so the separator used need not match
* File.separatorChar.
*
* @param basedir The base directory to scan.
* Must not be null.
*/
public void setBasedir( String basedir )
{
setBasedir( new File( basedir.replace( '/', File.separatorChar ).replace( '\\', File.separatorChar ) ) );
}
/**
* Sets the base directory to be scanned. This is the directory which is
* scanned recursively.
*
* @param basedir The base directory for scanning.
* Should not be null.
*/
public void setBasedir( File basedir )
{
this.basedir = basedir;
}
/**
* Returns the base directory to be scanned.
* This is the directory which is scanned recursively.
*
* @return the base directory to be scanned
*/
public File getBasedir()
{
return basedir;
}
/**
* Sets whether or not symbolic links should be followed.
*
* @param followSymlinks whether or not symbolic links should be followed
*/
public void setFollowSymlinks( boolean followSymlinks )
{
this.followSymlinks = followSymlinks;
}
/**
* Returns whether or not the scanner has included all the files or
* directories it has come across so far.
*
* @return true if all files and directories which have
* been found so far have been included.
*/
public boolean isEverythingIncluded()
{
return everythingIncluded;
}
/**
* Scans the base directory for files which match at least one include
* pattern and don't match any exclude patterns. If there are selectors
* then the files must pass muster there, as well.
*
* @throws IllegalStateException if the base directory was set
* incorrectly (i.e. if it is null, doesn't exist,
* or isn't a directory).
*/
public void scan()
throws IllegalStateException
{
if ( basedir == null )
{
throw new IllegalStateException( "No basedir set" );
}
if ( !basedir.exists() )
{
throw new IllegalStateException( "basedir " + basedir + " does not exist" );
}
if ( !basedir.isDirectory() )
{
throw new IllegalStateException( "basedir " + basedir + " is not a directory" );
}
setupDefaultFilters();
setupMatchPatterns();
filesIncluded = new Vector();
filesNotIncluded = new Vector();
filesExcluded = new Vector();
filesDeselected = new Vector();
dirsIncluded = new Vector();
dirsNotIncluded = new Vector();
dirsExcluded = new Vector();
dirsDeselected = new Vector();
if ( isIncluded( "", tokenizedEmpty ) )
{
if ( !isExcluded( "", tokenizedEmpty ) )
{
if ( isSelected( "", basedir ) )
{
dirsIncluded.addElement( "" );
}
else
{
dirsDeselected.addElement( "" );
}
}
else
{
dirsExcluded.addElement( "" );
}
}
else
{
dirsNotIncluded.addElement( "" );
}
scandir( basedir, "", true );
}
/**
* Top level invocation for a slow scan. A slow scan builds up a full
* list of excluded/included files/directories, whereas a fast scan
* will only have full results for included files, as it ignores
* directories which can't possibly hold any included files/directories.
*
* Returns immediately if a slow scan has already been completed.
*/
protected void slowScan()
{
if ( haveSlowResults )
{
return;
}
String[] excl = new String[dirsExcluded.size()];
dirsExcluded.copyInto( excl );
String[] notIncl = new String[dirsNotIncluded.size()];
dirsNotIncluded.copyInto( notIncl );
for ( String anExcl : excl )
{
if ( !couldHoldIncluded( anExcl ) )
{
scandir( new File( basedir, anExcl ), anExcl + File.separator, false );
}
}
for ( String aNotIncl : notIncl )
{
if ( !couldHoldIncluded( aNotIncl ) )
{
scandir( new File( basedir, aNotIncl ), aNotIncl + File.separator, false );
}
}
haveSlowResults = true;
}
/**
* Scans the given directory for files and directories. Found files and
* directories are placed in their respective collections, based on the
* matching of includes, excludes, and the selectors. When a directory
* is found, it is scanned recursively.
*
* @param dir The directory to scan. Must not be null.
* @param vpath The path relative to the base directory (needed to
* prevent problems with an absolute path when using
* dir). Must not be null.
* @param fast Whether or not this call is part of a fast scan.
* @see #filesIncluded
* @see #filesNotIncluded
* @see #filesExcluded
* @see #dirsIncluded
* @see #dirsNotIncluded
* @see #dirsExcluded
* @see #slowScan
*/
protected void scandir( File dir, String vpath, boolean fast )
{
String[] newfiles = dir.list();
if ( newfiles == null )
{
/*
* two reasons are mentioned in the API docs for File.list
* (1) dir is not a directory. This is impossible as
* we wouldn't get here in this case.
* (2) an IO error occurred (why doesn't it throw an exception
* then???)
*/
/*
* [jdcasey] (2) is apparently happening to me, as this is killing one of my tests...
* this is affecting the assembly plugin, fwiw. I will initialize the newfiles array as
* zero-length for now.
*
* NOTE: I can't find the problematic code, as it appears to come from a native method
* in UnixFileSystem...
*/
/*
* [bentmann] A null array will also be returned from list() on NTFS when dir refers to a soft link or
* junction point whose target is not existent.
*/
newfiles = new String[0];
// throw new IOException( "IO error scanning directory " + dir.getAbsolutePath() );
}
if ( !followSymlinks )
{
ArrayList noLinks = new ArrayList();
for ( String newfile : newfiles )
{
try
{
if ( isSymbolicLink( dir, newfile ) )
{
String name = vpath + newfile;
File file = new File( dir, newfile );
if ( file.isDirectory() )
{
dirsExcluded.addElement( name );
}
else
{
filesExcluded.addElement( name );
}
}
else
{
noLinks.add( newfile );
}
}
catch ( IOException ioe )
{
String msg = "IOException caught while checking " + "for links, couldn't get cannonical path!";
// will be caught and redirected to Ant's logging system
System.err.println( msg );
noLinks.add( newfile );
}
}
newfiles = noLinks.toArray(new String[noLinks.size()]);
}
for ( String newfile : newfiles )
{
String name = vpath + newfile;
String[] tokenizedName = MatchPattern.tokenizePathToString( name, File.separator );
File file = new File( dir, newfile );
if ( file.isDirectory() )
{
if ( isIncluded( name, tokenizedName ) )
{
if ( !isExcluded( name, tokenizedName ) )
{
if ( isSelected( name, file ) )
{
dirsIncluded.addElement( name );
if ( fast )
{
scandir( file, name + File.separator, fast );
}
}
else
{
everythingIncluded = false;
dirsDeselected.addElement( name );
if ( fast && couldHoldIncluded( name ) )
{
scandir( file, name + File.separator, fast );
}
}
}
else
{
everythingIncluded = false;
dirsExcluded.addElement( name );
if ( fast && couldHoldIncluded( name ) )
{
scandir( file, name + File.separator, fast );
}
}
}
else
{
everythingIncluded = false;
dirsNotIncluded.addElement( name );
if ( fast && couldHoldIncluded( name ) )
{
scandir( file, name + File.separator, fast );
}
}
if ( !fast )
{
scandir( file, name + File.separator, fast );
}
}
else if ( file.isFile() )
{
if ( isIncluded( name, tokenizedName ) )
{
if ( !isExcluded( name, tokenizedName ) )
{
if ( isSelected( name, file ) )
{
filesIncluded.addElement( name );
}
else
{
everythingIncluded = false;
filesDeselected.addElement( name );
}
}
else
{
everythingIncluded = false;
filesExcluded.addElement( name );
}
}
else
{
everythingIncluded = false;
filesNotIncluded.addElement( name );
}
}
}
}
/**
* Tests whether a name should be selected.
*
* @param name the filename to check for selecting
* @param file the java.io.File object for this filename
* @return false when the selectors says that the file
* should not be selected, true otherwise.
*/
protected boolean isSelected( String name, File file )
{
return true;
}
/**
* Returns the names of the files which matched at least one of the
* include patterns and none of the exclude patterns.
* The names are relative to the base directory.
*
* @return the names of the files which matched at least one of the
* include patterns and none of the exclude patterns.
*/
public String[] getIncludedFiles()
{
String[] files = new String[filesIncluded.size()];
filesIncluded.copyInto( files );
return files;
}
/**
* Returns the names of the files which matched none of the include
* patterns. The names are relative to the base directory. This involves
* performing a slow scan if one has not already been completed.
*
* @return the names of the files which matched none of the include
* patterns.
* @see #slowScan
*/
public String[] getNotIncludedFiles()
{
slowScan();
String[] files = new String[filesNotIncluded.size()];
filesNotIncluded.copyInto( files );
return files;
}
/**
* Returns the names of the files which matched at least one of the
* include patterns and at least one of the exclude patterns.
* The names are relative to the base directory. This involves
* performing a slow scan if one has not already been completed.
*
* @return the names of the files which matched at least one of the
* include patterns and at at least one of the exclude patterns.
* @see #slowScan
*/
public String[] getExcludedFiles()
{
slowScan();
String[] files = new String[filesExcluded.size()];
filesExcluded.copyInto( files );
return files;
}
/**
* Returns the names of the files which were selected out and
* therefore not ultimately included.
*
* The names are relative to the base directory. This involves
* performing a slow scan if one has not already been completed.
*
* @return the names of the files which were deselected.
* @see #slowScan
*/
public String[] getDeselectedFiles()
{
slowScan();
String[] files = new String[filesDeselected.size()];
filesDeselected.copyInto( files );
return files;
}
/**
* Returns the names of the directories which matched at least one of the
* include patterns and none of the exclude patterns.
* The names are relative to the base directory.
*
* @return the names of the directories which matched at least one of the
* include patterns and none of the exclude patterns.
*/
public String[] getIncludedDirectories()
{
String[] directories = new String[dirsIncluded.size()];
dirsIncluded.copyInto( directories );
return directories;
}
/**
* Returns the names of the directories which matched none of the include
* patterns. The names are relative to the base directory. This involves
* performing a slow scan if one has not already been completed.
*
* @return the names of the directories which matched none of the include
* patterns.
* @see #slowScan
*/
public String[] getNotIncludedDirectories()
{
slowScan();
String[] directories = new String[dirsNotIncluded.size()];
dirsNotIncluded.copyInto( directories );
return directories;
}
/**
* Returns the names of the directories which matched at least one of the
* include patterns and at least one of the exclude patterns.
* The names are relative to the base directory. This involves
* performing a slow scan if one has not already been completed.
*
* @return the names of the directories which matched at least one of the
* include patterns and at least one of the exclude patterns.
* @see #slowScan
*/
public String[] getExcludedDirectories()
{
slowScan();
String[] directories = new String[dirsExcluded.size()];
dirsExcluded.copyInto( directories );
return directories;
}
/**
* Returns the names of the directories which were selected out and
* therefore not ultimately included.
*
* The names are relative to the base directory. This involves
* performing a slow scan if one has not already been completed.
*
* @return the names of the directories which were deselected.
* @see #slowScan
*/
public String[] getDeselectedDirectories()
{
slowScan();
String[] directories = new String[dirsDeselected.size()];
dirsDeselected.copyInto( directories );
return directories;
}
/**
* Checks whether a given file is a symbolic link.
*
* It doesn't really test for symbolic links but whether the
* canonical and absolute paths of the file are identical - this
* may lead to false positives on some platforms.
*
* @param parent the parent directory of the file to test
* @param name the name of the file to test.
* @return true if it's a symbolic link
* @throws java.io.IOException .
* @since Ant 1.5
*/
public boolean isSymbolicLink( File parent, String name )
throws IOException
{
if ( Java7Detector.isJava7() )
{
return Java7FileUtil.isSymLink( new File( parent, name ) );
}
File resolvedParent = new File( parent.getCanonicalPath() );
File toTest = new File( resolvedParent, name );
return !toTest.getAbsolutePath().equals( toTest.getCanonicalPath() );
}
}