langtools/src/share/classes/com/sun/tools/sjavac/CompileProperties.java
changeset 15368 2577ddb7e710
child 22448 a85fbad9d687
child 22163 3651128c74eb
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/share/classes/com/sun/tools/sjavac/CompileProperties.java	Fri Jan 18 00:16:21 2013 +0100
@@ -0,0 +1,221 @@
+/*
+ * Copyright (c) 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.sjavac;
+
+import java.io.*;
+import java.net.URI;
+import java.text.MessageFormat;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Properties;
+import java.util.Set;
+import java.util.HashSet;
+import java.util.Map;
+
+/**
+ * Compile properties transform a properties file into a Java source file.
+ * Java has built in support for reading properties from either a text file
+ * in the source or a compiled java source file.
+ *
+ * <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></p>
+ */
+public class CompileProperties implements Transformer
+{
+    // Any extra information passed from the command line, for example if:
+    // -tr .proppp=com.sun.tools.javac.smart.CompileProperties,sun.util.resources.LocaleNamesBundle
+    // then extra will be "sun.util.resources.LocaleNamesBundle"
+    String extra;
+
+    public void setExtra(String e) {
+        extra = e;
+    }
+
+    public void setExtra(String[] a) {
+    }
+
+    public boolean transform(Map<String,Set<URI>> pkgSrcs,
+                             Set<URI>             visibleSrcs,
+                             Map<URI,Set<String>> visibleClasses,
+                             Map<String,Set<String>> oldPackageDependents,
+                             URI destRoot,
+                             Map<String,Set<URI>>    packageArtifacts,
+                             Map<String,Set<String>> packageDependencies,
+                             Map<String,String>      packagePublicApis,
+                             int debugLevel,
+                             boolean incremental,
+                             int numCores,
+                             PrintStream out,
+                             PrintStream err) {
+        boolean rc = true;
+        for (String pkgName : pkgSrcs.keySet()) {
+            String pkgNameF = Util.toFileSystemPath(pkgName);
+            for (URI u : pkgSrcs.get(pkgName)) {
+                File src = new File(u);
+                boolean r = compile(pkgName, pkgNameF, src, new File(destRoot), debugLevel,
+                                    packageArtifacts);
+                if (r == false) {
+                    rc = false;
+                }
+            }
+        }
+        return rc;
+    }
+
+    boolean compile(String pkgName, String pkgNameF, File src, File destRoot, int debugLevel,
+                    Map<String,Set<URI>> packageArtifacts)
+    {
+        String superClass = "java.util.ListResourceBundle";
+
+        if (extra != null) {
+            superClass = extra;
+        }
+        // Load the properties file.
+        Properties p = new Properties();
+        try {
+            p.load(new FileInputStream(src));
+        } catch (IOException e) {
+            Log.error("Error reading file "+src.getPath());
+            return false;
+        }
+
+        // Calculate the name of the Java source file to be generated.
+        int dp = src.getName().lastIndexOf(".");
+        String classname = src.getName().substring(0,dp);
+
+        // Sort the properties in increasing key order.
+        List<String> sortedKeys = new ArrayList<String>();
+        for (Object key : p.keySet()) {
+            sortedKeys.add((String)key);
+        }
+        Collections.sort(sortedKeys);
+        Iterator<String> keys = sortedKeys.iterator();
+
+        // Collect the properties into a string buffer.
+        StringBuilder data = new StringBuilder();
+        while (keys.hasNext()) {
+            String key = keys.next();
+            data.append("            { \"" + escape(key) + "\", \"" +
+                        escape((String)p.get(key)) + "\" },\n");
+        }
+
+        // Create dest file name. It is derived from the properties file name.
+        String destFilename = destRoot.getPath()+File.separator+pkgNameF+File.separator+classname+".java";
+        File dest = new File(destFilename);
+
+        // Make sure the dest directories exist.
+        if (!dest.getParentFile().isDirectory()) {
+            if (!dest.getParentFile().mkdirs()) {
+                Log.error("Could not create the directory "+dest.getParentFile().getPath());
+                return false;
+            }
+        }
+
+        Set<URI> as = packageArtifacts.get(pkgName);
+        if (as == null) {
+            as = new HashSet<URI>();
+            packageArtifacts.put(pkgName, as);
+        }
+        as.add(dest.toURI());
+
+        if (dest.exists() && dest.lastModified() > src.lastModified()) {
+            // A generated file exists, and its timestamp is newer than the source.
+            // Assume that we do not need to regenerate the dest file!
+            // Thus we are done.
+            return true;
+        }
+
+        String packageString = "package " + pkgNameF.replace(File.separatorChar,'.') + ";\n\n";
+
+        Log.info("Compiling property file "+pkgNameF+File.separator+src.getName());
+        try (Writer writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(dest)))) {
+            MessageFormat format = new MessageFormat(FORMAT);
+            writer.write(format.format(new Object[] { packageString, classname, superClass, data }));
+        } catch ( IOException e ) {
+            Log.error("Could not write file "+dest.getPath());
+            return false;
+        }
+        return true;
+    }
+
+    private static final String FORMAT =
+            "{0}" +
+            "public final class {1} extends {2} '{'\n" +
+            "    protected final Object[][] getContents() '{'\n" +
+            "        return new Object[][] '{'\n" +
+            "{3}" +
+            "        };\n" +
+            "    }\n" +
+            "}\n";
+
+    public static String escape(String theString) {
+        int len = theString.length();
+        StringBuilder outBuffer = new StringBuilder(len*2);
+
+        for(int x=0; x<len; x++) {
+            char aChar = theString.charAt(x);
+            switch(aChar) {
+                case '\\':outBuffer.append('\\'); outBuffer.append('\\');
+                break;
+                case '\t':outBuffer.append('\\'); outBuffer.append('t');
+                break;
+                case '\n':outBuffer.append('\\'); outBuffer.append('n');
+                break;
+                case '\r':outBuffer.append('\\'); outBuffer.append('r');
+                break;
+                case '\f':outBuffer.append('\\'); outBuffer.append('f');
+                break;
+                default:
+                    if ((aChar < 0x0020) || (aChar > 0x007e)) {
+                        outBuffer.append('\\');
+                        outBuffer.append('u');
+                        outBuffer.append(toHex((aChar >> 12) & 0xF));
+                        outBuffer.append(toHex((aChar >>  8) & 0xF));
+                        outBuffer.append(toHex((aChar >>  4) & 0xF));
+                        outBuffer.append(toHex( aChar        & 0xF));
+                    } else {
+                        if (aChar == '"') {
+                            outBuffer.append('\\');
+                        }
+                        outBuffer.append(aChar);
+                    }
+            }
+        }
+        return outBuffer.toString();
+    }
+
+    private static char toHex(int nibble) {
+        return hexDigit[(nibble & 0xF)];
+    }
+
+    private static final char[] hexDigit = {
+        '0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'
+    };
+}