langtools/src/share/classes/com/sun/tools/doclets/internal/toolkit/util/SimpleDocFileFactory.java
changeset 14544 d71d992cb905
child 14545 2e7bab0639b8
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/share/classes/com/sun/tools/doclets/internal/toolkit/util/SimpleDocFileFactory.java	Thu Nov 15 19:54:20 2012 -0800
@@ -0,0 +1,290 @@
+/*
+ * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.tools.doclets.internal.toolkit.util;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.UnsupportedEncodingException;
+import java.io.Writer;
+import java.util.ArrayList;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Set;
+
+import javax.tools.JavaFileManager.Location;
+import javax.tools.StandardLocation;
+
+import com.sun.tools.doclets.internal.toolkit.Configuration;
+
+/**
+ * Implementation of DocFileFactory that just uses java.io.File API,
+ * and does not use a JavaFileManager..
+ *
+ *  <p><b>This is NOT part of any supported API.
+ *  If you write code that depends on this, you do so at your own risk.
+ *  This code and its internal interfaces are subject to change or
+ *  deletion without notice.</b>
+ *
+ * @since 1.8
+ */
+class SimpleDocFileFactory extends DocFileFactory {
+
+    public SimpleDocFileFactory(Configuration configuration) {
+        super(configuration);
+    }
+
+    public DocFile createFileForDirectory(String file) {
+        return new SimpleDocFile(new File(file));
+    }
+
+    public DocFile createFileForInput(String file) {
+        return new SimpleDocFile(new File(file));
+    }
+
+    public DocFile createFileForOutput(DocPath path) {
+        return new SimpleDocFile(StandardLocation.CLASS_OUTPUT, path);
+    }
+
+    @Override
+    Iterable<DocFile> list(Location location, DocPath path) {
+        if (location != StandardLocation.SOURCE_PATH)
+            throw new IllegalArgumentException();
+
+        Set<DocFile> files = new LinkedHashSet<DocFile>();
+        for (String s : configuration.sourcepath.split(File.pathSeparator)) {
+            if (s.isEmpty())
+                continue;
+            File f = new File(s);
+            if (f.isDirectory()) {
+                f = new File(f, path.getPath());
+                if (f.exists())
+                    files.add(new SimpleDocFile(f));
+            }
+        }
+        return files;
+    }
+
+    class SimpleDocFile extends DocFile {
+        private File file;
+
+        /** Create a DocFile for a given file. */
+        private SimpleDocFile(File file) {
+            super(configuration);
+            this.file = file;
+        }
+
+        /** Create a DocFile for a given location and relative path. */
+        private SimpleDocFile(Location location, DocPath path) {
+            super(configuration, location, path);
+            String destDirName = configuration.destDirName;
+            this.file = destDirName.isEmpty() ? new File(path.getPath())
+                    : new File(destDirName, path.getPath());
+        }
+
+        /** Open an input stream for the file. */
+        public InputStream openInputStream() throws FileNotFoundException {
+            return new BufferedInputStream(new FileInputStream(file));
+        }
+
+        /**
+         * Open an output stream for the file.
+         * The file must have been created with a location of
+         * {@link StandardLocation#CLASS_OUTPUT} and a corresponding relative path.
+         */
+        public OutputStream openOutputStream() throws IOException, UnsupportedEncodingException {
+            if (location != StandardLocation.CLASS_OUTPUT)
+                throw new IllegalStateException();
+
+            createDirectoryForFile(file);
+            return new BufferedOutputStream(new FileOutputStream(file));
+        }
+
+        /**
+         * Open an writer for the file, using the encoding (if any) given in the
+         * doclet configuration.
+         * The file must have been created with a location of
+         * {@link StandardLocation#CLASS_OUTPUT} and a corresponding relative path.
+         */
+        public Writer openWriter() throws IOException, UnsupportedEncodingException {
+            if (location != StandardLocation.CLASS_OUTPUT)
+                throw new IllegalStateException();
+
+            createDirectoryForFile(file);
+            FileOutputStream fos = new FileOutputStream(file);
+            if (configuration.docencoding == null) {
+                return new BufferedWriter(new OutputStreamWriter(fos));
+            } else {
+                return new BufferedWriter(new OutputStreamWriter(fos, configuration.docencoding));
+            }
+        }
+
+        /** Return true if the file can be read. */
+        public boolean canRead() {
+            return file.canRead();
+        }
+
+        /** Return true if the file can be written. */
+        public boolean canWrite() {
+            return file.canRead();
+        }
+
+        /** Return true if the file exists. */
+        public boolean exists() {
+            return file.exists();
+        }
+
+        /** Return the base name (last component) of the file name. */
+        public String getName() {
+            return file.getName();
+        }
+
+        /** Return the file system path for this file. */
+        public String getPath() {
+            return file.getPath();
+        }
+
+        /** Return true is file has an absolute path name. */
+        public boolean isAbsolute() {
+            return file.isAbsolute();
+        }
+
+        /** Return true is file identifies a directory. */
+        public boolean isDirectory() {
+            return file.isDirectory();
+        }
+
+        /** Return true is file identifies a file. */
+        public boolean isFile() {
+            return file.isFile();
+        }
+
+        /** Return true if this file is the same as another. */
+        public boolean isSameFile(DocFile other) {
+            if (!(other instanceof SimpleDocFile))
+                return false;
+
+            try {
+                return file.exists()
+                        && file.getCanonicalFile().equals(((SimpleDocFile)other).file.getCanonicalFile());
+            } catch (IOException e) {
+                return false;
+            }
+        }
+
+        /** If the file is a directory, list its contents. */
+        public Iterable<DocFile> list() {
+            List<DocFile> files = new ArrayList<DocFile>();
+            for (File f: file.listFiles()) {
+                files.add(new SimpleDocFile(f));
+            }
+            return files;
+        }
+
+        /** Create the file as a directory, including any parent directories. */
+        public boolean mkdirs() {
+            return file.mkdirs();
+        }
+
+        /**
+         * Derive a new file by resolving a relative path against this file.
+         * The new file will inherit the configuration and location of this file
+         * If this file has a path set, the new file will have a corresponding
+         * new path.
+         */
+        public DocFile resolve(DocPath p) {
+            return resolve(p.getPath());
+        }
+
+        /**
+         * Derive a new file by resolving a relative path against this file.
+         * The new file will inherit the configuration and location of this file
+         * If this file has a path set, the new file will have a corresponding
+         * new path.
+         */
+        public DocFile resolve(String p) {
+            if (location == null && path == null) {
+                return new SimpleDocFile(new File(file, p));
+            } else {
+                return new SimpleDocFile(location, path.resolve(p));
+            }
+        }
+
+        /**
+         * Resolve a relative file against the given output location.
+         * @param locn Currently, only SOURCE_OUTPUT is supported.
+         */
+        public DocFile resolveAgainst(StandardLocation locn) {
+            if (locn != StandardLocation.CLASS_OUTPUT)
+                throw new IllegalArgumentException();
+            return new SimpleDocFile(
+                    new File(configuration.destDirName, file.getPath()));
+        }
+
+        /**
+         * Given a path string create all the directories in the path. For example,
+         * if the path string is "java/applet", the method will create directory
+         * "java" and then "java/applet" if they don't exist. The file separator
+         * string "/" is platform dependent system property.
+         *
+         * @param path Directory path string.
+         */
+        private void createDirectoryForFile(File file) {
+            File dir = file.getParentFile();
+            if (dir == null || dir.exists() || dir.mkdirs())
+                return;
+
+            configuration.message.error(
+                   "doclet.Unable_to_create_directory_0", dir.getPath());
+            throw new DocletAbortException();
+        }
+
+        /** Return a string to identify the contents of this object,
+         * for debugging purposes.
+         */
+        @Override
+        public String toString() {
+            StringBuilder sb = new StringBuilder();
+            sb.append("DocFile[");
+            if (location != null)
+                sb.append("locn:").append(location).append(",");
+            if (path != null)
+                sb.append("path:").append(path.getPath()).append(",");
+            sb.append("file:").append(file);
+            sb.append("]");
+            return sb.toString();
+        }
+
+    }
+}