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/* * @(#)StandardJavaFileManager.java 1.13 06/09/25 * * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */ package javax.tools; import java.io.File; import java.io.IOException; import java.util.*; import java.util.concurrent.*; /** * File manager based on {@linkplain File java.io.File}. A common way * to obtain an instance of this class is using {@linkplain * JavaCompiler#getStandardFileManager * getStandardFileManager}, for example: * * <pre> * JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); * {@code DiagnosticCollector<JavaFileObject>} diagnostics = * new {@code DiagnosticCollector<JavaFileObject>()}; * StandardJavaFileManager fm = compiler.getStandardFileManager(diagnostics, null, null); * </pre> * * This file manager creates file objects representing regular * {@linkplain File files}, * {@linkplain java.util.zip.ZipEntry zip file entries}, or entries in * similar file system based containers. Any file object returned * from a file manager implementing this interface must observe the * following behavior: * * <ul> * <li> * File names need not be canonical. * </li> * <li> * For file objects representing regular files * <ul> * <li> * the method <code>{@linkplain FileObject#delete()}</code> * is equivalent to <code>{@linkplain File#delete()}</code>, * </li> * <li> * the method <code>{@linkplain FileObject#getLastModified()}</code> * is equivalent to <code>{@linkplain File#lastModified()}</code>, * </li> * <li> * the methods <code>{@linkplain FileObject#getCharContent(boolean)}</code>, * <code>{@linkplain FileObject#openInputStream()}</code>, and * <code>{@linkplain FileObject#openReader(boolean)}</code> * must succeed if the following would succeed (ignoring * encoding issues): * <blockquote> * <pre>new {@linkplain java.io.FileInputStream#FileInputStream(File) FileInputStream}(new {@linkplain File#File(java.net.URI) File}({@linkplain FileObject fileObject}.{@linkplain FileObject#toUri() toUri}()))</pre> * </blockquote> * </li> * <li> * and the methods * <code>{@linkplain FileObject#openOutputStream()}</code>, and * <code>{@linkplain FileObject#openWriter()}</code> must * succeed if the following would succeed (ignoring encoding * issues): * <blockquote> * <pre>new {@linkplain java.io.FileOutputStream#FileOutputStream(File) FileOutputStream}(new {@linkplain File#File(java.net.URI) File}({@linkplain FileObject fileObject}.{@linkplain FileObject#toUri() toUri}()))</pre> * </blockquote> * </li> * </ul> * </li> * <li> * The {@linkplain java.net.URI URI} returned from * <code>{@linkplain FileObject#toUri()}</code> * <ul> * <li> * must be {@linkplain java.net.URI#isAbsolute() absolute} (have a schema), and * </li> * <li> * must have a {@linkplain java.net.URI#normalize() normalized} * {@linkplain java.net.URI#getPath() path component} which * can be resolved without any process-specific context such * as the current directory (file names must be absolute). * </li> * </ul> * </li> * </ul> * * According to these rules, the following URIs, for example, are * allowed: * <ul> * <li> * <code>file:///C:/Documents%20and%20Settings/UncleBob/BobsApp/Test.java</code> * </li> * <li> * <code>jar:///C:/Documents%20and%20Settings/UncleBob/lib/vendorA.jar!com/vendora/LibraryClass.class</code> * </li> * </ul> * Whereas these are not (reason in parentheses): * <ul> * <li> * <code>file:BobsApp/Test.java</code> (the file name is relative * and depend on the current directory) * </li> * <li> * <code>jar:lib/vendorA.jar!com/vendora/LibraryClass.class</code> * (the first half of the path depends on the current directory, * whereas the component after ! is legal) * </li> * <li> * <code>Test.java</code> (this URI depends on the current * directory and does not have a schema) * </li> * <li> * <code>jar:///C:/Documents%20and%20Settings/UncleBob/BobsApp/../lib/vendorA.jar!com/vendora/LibraryClass.class</code> * (the path is not normalized) * </li> * </ul> * * @author Peter von der Ahé * @since 1.6 */ public interface StandardJavaFileManager extends JavaFileManager { /** * Compares two file objects and return true if they represent the * same canonical file, zip file entry, or entry in any file * system based container. * * @param a a file object * @param b a file object * @return true if the given file objects represent the same * canonical file or zip file entry; false otherwise * * @throws IllegalArgumentException if either of the arguments * were created with another file manager implementation */ boolean isSameFile(FileObject a, FileObject b); /** * Gets file objects representing the given files. * * @param files a list of files * @return a list of file objects * @throws IllegalArgumentException if the list of files includes * a directory */ Iterable<? extends JavaFileObject> getJavaFileObjectsFromFiles( Iterable<? extends File> files); /** * Gets file objects representing the given files. * Convenience method equivalent to: * * <pre> * getJavaFileObjectsFromFiles({@linkplain java.util.Arrays#asList Arrays.asList}(files)) * </pre> * * @param files an array of files * @return a list of file objects * @throws IllegalArgumentException if the array of files includes * a directory * @throws NullPointerException if the given array contains null * elements */ Iterable<? extends JavaFileObject> getJavaFileObjects(File... files); /** * Gets file objects representing the given file names. * * @param names a list of file names * @return a list of file objects * @throws IllegalArgumentException if the list of file names * includes a directory */ Iterable<? extends JavaFileObject> getJavaFileObjectsFromStrings( Iterable<String> names); /** * Gets file objects representing the given file names. * Convenience method equivalent to: * * <pre> * getJavaFileObjectsFromStrings({@linkplain java.util.Arrays#asList Arrays.asList}(names)) * </pre> * * @param names a list of file names * @return a list of file objects * @throws IllegalArgumentException if the array of file names * includes a directory * @throws NullPointerException if the given array contains null * elements */ Iterable<? extends JavaFileObject> getJavaFileObjects(String... names); /** * Associates the given path with the given location. Any * previous value will be discarded. * * @param location a location * @param path a list of files, if {@code null} use the default * path for this location * @see #getLocation * @throws IllegalArgumentException if location is an output * location and path does not contain exactly one element * @throws IOException if location is an output location and path * does not represent an existing directory */ void setLocation(Location location, Iterable<? extends File> path) throws IOException; /** * Gets the path associated with the given location. * * @param location a location * @return a list of files or {@code null} if this location has no * associated path * @see #setLocation */ Iterable<? extends File> getLocation(Location location); }