/*
* 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
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*/
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'
};
}