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com.mchange.v2.debug.DebugGen Maven / Gradle / Ivy
/*
* Distributed as part of mchange-commons-java 0.2.6.3
*
* Copyright (C) 2013 Machinery For Change, Inc.
*
* Author: Steve Waldman
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of EITHER:
*
* 1) The GNU Lesser General Public License (LGPL), version 2.1, as
* published by the Free Software Foundation
*
* OR
*
* 2) The Eclipse Public License (EPL), version 1.0
*
* You may choose which license to accept if you wish to redistribute
* or modify this work. You may offer derivatives of this work
* under the license you have chosen, or you may provide the same
* choice of license which you have been offered here.
*
* This software 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.
*
* You should have received copies of both LGPL v2.1 and EPL v1.0
* along with this software; see the files LICENSE-EPL and LICENSE-LGPL.
* If not, the text of these licenses are currently available at
*
* LGPL v2.1: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* EPL v1.0: http://www.eclipse.org/org/documents/epl-v10.php
*
*/
package com.mchange.v2.debug;
import java.io.*;
import java.util.*;
import com.mchange.v2.cmdline.*;
import com.mchange.v2.io.FileIterator;
import com.mchange.v2.io.DirectoryDescentUtils;
import com.mchange.v1.io.WriterUtils;
import com.mchange.v1.lang.BooleanUtils;
import com.mchange.v1.util.SetUtils;
import com.mchange.v1.util.StringTokenizerUtils;
public final class DebugGen implements DebugConstants
{
final static String[] VALID = new String[]
{
"codebase",
"packages" ,
"trace",
"debug",
"recursive",
"javac",
"noclobber",
"classname",
"skipdirs",
"outputbase"
};
final static String[] REQUIRED = new String[]
{ "codebase", "packages" , "trace", "debug" };
final static String[] ARGS = new String[]
{ "codebase", "packages" , "trace", "debug", "classname", "outputbase" };
final static String EOL;
static
{
EOL = System.getProperty("line.separator");
}
static int trace_level;
static boolean debug;
static boolean recursive;
static String classname;
static boolean clobber;
static Set skipDirs;
public synchronized static final void main(String[] argv)
{
String codebase;
String outputbase;
File[] srcPkgDirs;
try
{
ParsedCommandLine pcl = CommandLineUtils.parse( argv, "--", VALID, REQUIRED, ARGS);
//get and normalize the codebase
codebase = pcl.getSwitchArg("codebase");
codebase = platify( codebase );
if (! codebase.endsWith(File.separator))
codebase += File.separator;
//get and normalize the outputbase
outputbase = pcl.getSwitchArg("outputbase");
if ( outputbase != null )
{
outputbase = platify( outputbase );
if (! outputbase.endsWith(File.separator))
outputbase += File.separator;
}
else
outputbase = codebase;
File outputBaseDir = new File( outputbase );
//System.err.println("outputBaseDir: " + outputBaseDir + "; exists? " + outputBaseDir.exists());
if (outputBaseDir.exists())
{
if (!outputBaseDir.isDirectory())
{
//System.err.println("Output Base '" + outputBaseDir.getPath() + "' is not a directory!");
System.exit(-1);
}
else if (!outputBaseDir.canWrite())
{
System.err.println("Output Base '" + outputBaseDir.getPath() + "' is not writable!");
System.exit(-1);
}
}
else if (! outputBaseDir.mkdirs() )
{
System.err.println("Output Base directory '" + outputBaseDir.getPath() + "' does not exist, and could not be created!");
System.exit(-1);
}
//find existing package dirs
String[] packages = StringTokenizerUtils.tokenizeToArray(pcl.getSwitchArg("packages"),", \t");
srcPkgDirs = new File[ packages.length ];
for(int i = 0, len = packages.length; i < len; ++i)
srcPkgDirs[i] = new File(codebase + sepify(packages[i]));
//find trace level
trace_level = Integer.parseInt( pcl.getSwitchArg("trace") );
//find debug
debug = BooleanUtils.parseBoolean( pcl.getSwitchArg("debug") );
//find classname, or use default
classname = pcl.getSwitchArg("classname");
if (classname == null)
classname = "Debug";
//find recursive
recursive = pcl.includesSwitch("recursive");
//find clobber
clobber = !pcl.includesSwitch("noclobber");
//find skipDirs
String skipdirStr = pcl.getSwitchArg("skipdirs");
if (skipdirStr != null)
{
String[] skipdirArray = StringTokenizerUtils.tokenizeToArray(skipdirStr, ", \t");
skipDirs = SetUtils.setFromArray( skipdirArray );
}
else
{
skipDirs = new HashSet();
skipDirs.add("CVS");
}
if ( pcl.includesSwitch("javac") )
System.err.println("autorecompilation of packages not yet implemented.");
for (int i = 0, len = srcPkgDirs.length; i < len; ++i)
{
if (recursive)
{
if (! recursivePrecheckPackages( codebase, srcPkgDirs[i], outputbase, outputBaseDir ))
{
System.err.println("One or more of the specifies packages" +
" could not be processed. Aborting." +
" No files have been modified.");
System.exit(-1);
}
}
else
{
if (! precheckPackage( codebase, srcPkgDirs[i], outputbase, outputBaseDir ))
{
System.err.println("One or more of the specifies packages" +
" could not be processed. Aborting." +
" No files have been modified.");
System.exit(-1);
}
}
}
for (int i = 0, len = srcPkgDirs.length; i < len; ++i)
{
if (recursive)
recursiveWriteDebugFiles( codebase, srcPkgDirs[i], outputbase, outputBaseDir );
else
writeDebugFile( outputbase, srcPkgDirs[i] );
}
}
catch (Exception e)
{
e.printStackTrace();
System.err.println();
usage();
}
}
private static void usage()
{
System.err.println("java " + DebugGen.class.getName() + " \\");
System.err.println("\t--codebase= \\ (no default)");
System.err.println("\t--packages= \\ (no default)");
System.err.println("\t--debug= \\ (no default)");
System.err.println("\t--trace= \\ (no default)");
System.err.println("\t--outputdir= \\ (defaults to same dir as codebase)");
System.err.println("\t--recursive \\ (no args)");
System.err.println("\t--noclobber \\ (no args)");
System.err.println("\t--classname= \\ (defaults to Debug)");
System.err.println("\t--skipdirs= \\ (defaults to CVS)");
}
private static String ify(String str, char fromChar, char toChar)
{
if ( fromChar == toChar ) return str;
StringBuffer sb = new StringBuffer(str);
for (int i = 0, len = sb.length(); i < len; ++i)
if (sb.charAt(i) == fromChar)
sb.setCharAt(i, toChar);
return sb.toString();
}
private static String platify( String str )
{
String out;
out = ify( str, '/', File.separatorChar );
out = ify( out, '\\', File.separatorChar );
out = ify( out, ':', File.separatorChar );
return out;
}
private static String dottify(String str)
{ return ify(str, File.separatorChar, '.');}
private static String sepify(String str)
{ return ify(str, '.', File.separatorChar);}
private static boolean recursivePrecheckPackages(String codebase, File srcPkgDir, String outputbase, File outputBaseDir) throws IOException
{
FileIterator fii = DirectoryDescentUtils.depthFirstEagerDescent( srcPkgDir );
while (fii.hasNext())
{
File pkgDir = fii.nextFile();
if (! pkgDir.isDirectory() || skipDirs.contains(pkgDir.getName()))
continue;
File outputDir = outputDir( codebase, pkgDir, outputbase, outputBaseDir );
if (! outputDir.exists() && !outputDir.mkdirs() )
{
System.err.println( "Required output dir: '" + outputDir +
"' does not exist, and could not be created.");
return false;
}
if (!precheckOutputPackageDir( outputDir ))
return false;
}
return true;
}
private static File outputDir( String codebase, File srcPkgDir, String outputbase, File outputBaseDir )
{
//System.err.println("outputDir( " + codebase +", " + srcPkgDir + ", " + outputbase + ", " + outputBaseDir + " )");
if (codebase.equals(outputbase))
return srcPkgDir;
String srcPath = srcPkgDir.getPath();
if (! srcPath.startsWith( codebase ))
{
System.err.println(DebugGen.class.getName() + ": program bug. Source package path '" + srcPath +
"' does not begin with codebase '" + codebase + "'.");
System.exit(-1);
}
return new File( outputBaseDir, srcPath.substring( codebase.length() ) );
}
private static boolean precheckPackage( String codebase, File srcPkgDir, String outputbase, File outputBaseDir ) throws IOException
{ return precheckOutputPackageDir( outputDir(codebase, srcPkgDir, outputbase, outputBaseDir) ); }
private static boolean precheckOutputPackageDir(File dir) throws IOException
{
File outFile = new File( dir, classname + ".java" );
if (! dir.canWrite())
{
System.err.println("File '" + outFile.getPath() + "' is not writable.");
return false;
}
else if (!clobber && outFile.exists())
{
System.err.println("File '" + outFile.getPath() + "' exists, and we are in noclobber mode.");
return false;
}
else
return true;
}
private static void recursiveWriteDebugFiles( String codebase, File srcPkgDir, String outputbase, File outputBaseDir ) throws IOException
{
FileIterator fii = DirectoryDescentUtils.depthFirstEagerDescent( outputDir( codebase, srcPkgDir, outputbase, outputBaseDir ) );
while (fii.hasNext())
{
File pkgDir = fii.nextFile();
//System.err.println("pkgDir: " + pkgDir);
if (! pkgDir.isDirectory() || skipDirs.contains(pkgDir.getName()))
continue;
writeDebugFile(outputbase, pkgDir);
}
}
private static void writeDebugFile(String outputbase, File pkgDir) throws IOException
{
//System.err.println("outputbase: " + outputbase + "; pkgDir: " + pkgDir);
File outFile = new File( pkgDir, classname + ".java" );
String pkg = dottify( pkgDir.getPath().substring( outputbase.length() ) );
System.err.println("Writing file: " + outFile.getPath());
Writer writer = null;
try
{
writer = new OutputStreamWriter(
new BufferedOutputStream(
new FileOutputStream( outFile ) ), "UTF8" );
writer.write("/********************************************************************" + EOL);
writer.write(" * This class generated by " + DebugGen.class.getName() + EOL);
writer.write(" * and will probably be overwritten by the same! Edit at" + EOL);
writer.write(" * YOUR PERIL!!! Hahahahaha." + EOL);
writer.write(" ********************************************************************/" + EOL);
writer.write(EOL);
writer.write("package " + pkg + ';' + EOL);
writer.write(EOL);
writer.write("import com.mchange.v2.debug.DebugConstants;" + EOL);
writer.write(EOL);
writer.write("final class " + classname + " implements DebugConstants" + EOL);
writer.write("{" + EOL);
writer.write("\tfinal static boolean DEBUG = " + debug + ';' + EOL);
writer.write("\tfinal static int TRACE = " + traceStr( trace_level ) + ';' + EOL);
writer.write(EOL);
writer.write("\tprivate " + classname + "()" + EOL);
writer.write("\t{}" + EOL);
writer.write("}" + EOL);
writer.write(EOL);
writer.flush();
}
finally
{ WriterUtils.attemptClose( writer ); }
}
private static String traceStr( int trace )
{
if (trace == TRACE_NONE)
return "TRACE_NONE";
else if (trace == TRACE_MED)
return "TRACE_MED";
else if (trace == TRACE_MAX)
return "TRACE_MAX";
else
return String.valueOf(trace);
}
}
