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SourcePathCache.javaAPI DocAndroid 1.5 API7505Wed May 06 22:41:16 BST 2009com.vladium.emma.report

SourcePathCache

public final class SourcePathCache extends Object
author
Vlad Roubtsov, (C) 2003

Fields Summary
private final File[]
m_sourcepath
private final Map
m_packageCache
private static final FileExtensionFilter
FILE_EXTENSION_FILTER
Constructors Summary
public SourcePathCache(String[] sourcepath, boolean removeNonExistent)

param
sourcepath [can be empty]

        if (sourcepath == null) throw new IllegalArgumentException ("null input: sourcepath");
        
        final List _sourcepath = new ArrayList (sourcepath.length);
        for (int i = 0; i < sourcepath.length; ++ i)
        {
            final File dir = new File (sourcepath [i]);
            
            if (! removeNonExistent || (dir.isDirectory () && dir.exists ()))
                _sourcepath.add (dir);
        }
        
        m_sourcepath = new File [_sourcepath.size ()];
        _sourcepath.toArray (m_sourcepath);
        
        m_packageCache = new HashMap ();
public SourcePathCache(File[] sourcepath, boolean removeNonExistent)

param
sourcepath [can be empty]

        if (sourcepath == null) throw new IllegalArgumentException ("null input: sourcepath");
        
        final List _sourcepath = new ArrayList (sourcepath.length);
        for (int i = 0; i < sourcepath.length; ++ i)
        {
            final File dir = sourcepath [i];
            
            if (! removeNonExistent || (dir.isDirectory () && dir.exists ()))
                _sourcepath.add (dir);
        }
        
        m_sourcepath = new File [_sourcepath.size ()];
        _sourcepath.toArray (m_sourcepath);
        
        m_packageCache = new HashMap ();
Methods Summary
private java.util.SetfaultListing(java.io.File dir, java.lang.String packageVMName)

        if ($assert.ENABLED) $assert.ASSERT (dir != null, "dir = null");
        if ($assert.ENABLED) $assert.ASSERT (packageVMName != null, "packageVMName = null");
        
        final File packageFile = new File (dir, packageVMName.replace ('/", File.separatorChar));
        
        final File [] listing = packageFile.listFiles (FILE_EXTENSION_FILTER);
        
        if ((listing == null) || (listing.length == 0))
            return Collections.EMPTY_SET;
        else
        {
            final Set result = new HashSet (listing.length);
            for (int f = 0; f < listing.length; ++ f)
            {
                result.add (listing [f].getName ());
            }
            
            return result;
        }
public synchronized java.io.Filefind(java.lang.String packageVMName, java.lang.String name)

return
absolute pathname [null if 'name' was not found in cache]

        if (packageVMName == null) throw new IllegalArgumentException ("null input: packageVMName");
        if (name == null) throw new IllegalArgumentException ("null input: name");
        
        if (m_sourcepath.length == 0) return null;
        
        CacheEntry entry = (CacheEntry) m_packageCache.get (packageVMName);
        
        if (entry == null)
        {
            entry = new CacheEntry (m_sourcepath.length);
            m_packageCache.put (packageVMName, entry);
        }
        
        final Set [] listings = entry.m_listings;
        for (int p = 0; p < listings.length; ++ p)
        {
            Set listing = listings [p];
            if (listing == null)
            {
                listing = faultListing (m_sourcepath [p], packageVMName);
                listings [p] = listing;
            }
            
            // TODO: this is case-sensitive at this point
            if (listing.contains (name))
            {
                final File relativeFile = new File (packageVMName.replace ('/", File.separatorChar), name);
                
                return new File (m_sourcepath [p], relativeFile.getPath ()).getAbsoluteFile ();
            }
        }
        
        return null;