Files
narya/src/java/com/threerings/cast/bundle/tools/ComponentBundlerTask.java
T
Michael Bayne 4357c047f3 Trimmed tileset takes care of setting up its name, but the image path must
be set by the caller.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@1525 542714f4-19e9-0310-aa3c-eee0fc999fb1
2002-06-21 18:44:28 +00:00

471 lines
16 KiB
Java

//
// $Id: ComponentBundlerTask.java,v 1.11 2002/06/21 18:44:28 mdb Exp $
package com.threerings.cast.bundle.tools;
import java.awt.Image;
import javax.imageio.ImageIO;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.jar.JarOutputStream;
import java.util.jar.JarEntry;
import org.xml.sax.SAXException;
import org.apache.commons.digester.Digester;
import com.samskivert.io.PersistenceException;
import com.samskivert.util.HashIntMap;
import com.samskivert.util.StringUtil;
import com.samskivert.util.Tuple;
import org.apache.commons.io.StreamUtils;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.DirectoryScanner;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.types.FileSet;
import com.threerings.media.tile.ImageProvider;
import com.threerings.media.tile.TileSet;
import com.threerings.media.tile.TrimmedTileSet;
import com.threerings.media.tile.tools.xml.SwissArmyTileSetRuleSet;
import com.threerings.cast.ComponentIDBroker;
import com.threerings.cast.bundle.BundleUtil;
import com.threerings.cast.tools.xml.ActionRuleSet;
/**
* Ant task for creating component bundles. This task must be configured
* with a number of parameters:
*
* <pre>
* target=[path to bundle file, which will be created]
* mapfile=[path to the component map file which maintains a mapping from
* component id to component class/name, it will be created the
* first time and updated as new components are mapped]
* </pre>
*
* It should also contain one or more nested &lt;fileset&gt; elements that
* enumerate the action tileset images that should be included in the
* component bundle.
*/
public class ComponentBundlerTask extends Task
{
/**
* Sets the path to the bundle file that we'll be creating.
*/
public void setTarget (File target)
{
_target = target;
}
/**
* Sets the path to the component map file that we'll use to obtain
* component ids for the bundled components.
*/
public void setMapfile (File mapfile)
{
_mapfile = mapfile;
}
/**
* Sets the path to the action tilesets definition file.
*/
public void setActiondef (File actiondef)
{
_actionDef = actiondef;
}
/**
* Sets the root path which will be stripped from the image paths
* prior to parsing them to obtain the component class, type and
* action names.
*/
public void setRoot (File root)
{
_root = root.getPath();
}
/**
* Adds a nested &lt;fileset&gt; element.
*/
public void addFileset (FileSet set)
{
_filesets.add(set);
}
/**
* Performs the actual work of the task.
*/
public void execute () throws BuildException
{
// make sure everything was set up properly
ensureSet(_target, "Must specify the path to the target bundle " +
"file via the 'target' attribute.");
ensureSet(_mapfile, "Must specify the path to the component map " +
"file via the 'mapfile' attribute.");
ensureSet(_actionDef, "Must specify the action sequence " +
"definitions via the 'actiondef' attribute.");
// parse in the action tilesets
HashMap actsets = parseActionTileSets();
// load up our component ID broker
ComponentIDBroker broker = loadBroker(_mapfile);
try {
// make sure we can create our bundle file
FileOutputStream fout = new FileOutputStream(_target);
JarOutputStream jout = new JarOutputStream(fout);
// we'll fill this with component id to tuple mappings
HashIntMap mapping = new HashIntMap();
// herein we'll insert trimmed tileset objects that go along
// with each of the trimmed action images
HashIntMap actionSets = new HashIntMap();
// deal with the filesets
for (int i = 0; i < _filesets.size(); i++) {
FileSet fs = (FileSet)_filesets.get(i);
DirectoryScanner ds = fs.getDirectoryScanner(project);
File fromDir = fs.getDir(project);
String[] srcFiles = ds.getIncludedFiles();
for (int f = 0; f < srcFiles.length; f++) {
File cfile = new File(fromDir, srcFiles[f]);
// determine the [class, name, action] triplet
String[] info = decomposePath(cfile.getPath());
// make sure we have an action tileset definition
TileSet aset = (TileSet)actsets.get(info[2]);
if (aset == null) {
System.err.println(
"No tileset definition for component action " +
"[class=" + info[0] + ", name=" + info[1] +
", action=" + info[2] + "].");
continue;
}
// obtain the component id from our id broker
int cid = broker.getComponentID(info[0], info[1]);
// add a mapping for this component
mapping.put(cid, new Tuple(info[0], info[1]));
// construct the path that'll go in the jar file
String ipath = composePath(
info, BundleUtil.IMAGE_EXTENSION);
jout.putNextEntry(new JarEntry(ipath));
// create a trimmed tileset based on the source action
// tileset and stuff the new trimmed image into the
// jar file at the same time
aset.setImagePath(cfile.getPath());
aset.setImageProvider(new ImageProvider() {
public Image loadImage (String path)
throws IOException {
return ImageIO.read(new File(path));
}
});
TrimmedTileSet tset =
TrimmedTileSet.trimTileSet(aset, jout);
tset.setImagePath(ipath);
// also write our trimmed tileset to the jar file
String tpath = composePath(
info, BundleUtil.TILESET_EXTENSION);
jout.putNextEntry(new JarEntry(tpath));
ObjectOutputStream oout = new ObjectOutputStream(jout);
oout.writeObject(tset);
oout.flush();
}
}
// write our mapping table to the jar file as well
jout.putNextEntry(new JarEntry(BundleUtil.COMPONENTS_PATH));
ObjectOutputStream oout = new ObjectOutputStream(jout);
oout.writeObject(mapping);
oout.flush();
// seal up our jar file
jout.close();
} catch (IOException ioe) {
String errmsg = "Unable to create component bundle.";
throw new BuildException(errmsg, ioe);
} catch (PersistenceException pe) {
String errmsg = "Unable to obtain component ID mapping.";
throw new BuildException(errmsg, pe);
}
// save our updated component ID broker
saveBroker(_mapfile, broker);
}
/**
* Decomposes the full path to a component image into a [class, name,
* action] triplet.
*/
protected String[] decomposePath (String path)
throws BuildException
{
// first strip off the root
if (!path.startsWith(_root)) {
throw new BuildException("Can't bundle images outside the " +
"root directory [root=" + _root +
", path=" + path + "].");
}
path = path.substring(_root.length());
// strip off any preceding slash
if (path.startsWith("/")) {
path = path.substring(1);
}
// now strip off the file extension
if (!path.endsWith(BundleUtil.IMAGE_EXTENSION)) {
throw new BuildException("Can't bundle malformed image file " +
"[path=" + path + "].");
}
path = path.substring(0, path.length() -
BundleUtil.IMAGE_EXTENSION.length());
// now decompose the path; the component type and action must
// always be a single string but the class can span multiple
// directories for easier component organization; thus
// "male/head/goatee/standing" will be parsed as [class=male/head,
// type=goatee, action=standing]
String malmsg = "Can't decode malformed image path: '" + path + "'";
String[] info = new String[3];
int lsidx = path.lastIndexOf(File.separator);
if (lsidx == -1) {
throw new BuildException(malmsg);
}
info[2] = path.substring(lsidx+1);
int slsidx = path.lastIndexOf(File.separator, lsidx-1);
if (slsidx == -1) {
throw new BuildException(malmsg);
}
info[1] = path.substring(slsidx+1, lsidx);
info[0] = path.substring(0, slsidx);
return info;
}
/**
* Composes a triplet of [class, name, action] into the path that
* should be supplied to the JarEntry that contains the associated
* image data.
*/
protected String composePath (String[] info, String extension)
{
return (info[0] + File.separator + info[1] +
File.separator + info[2] + extension);
}
protected void ensureSet (Object value, String errmsg)
throws BuildException
{
if (value == null) {
throw new BuildException(errmsg);
}
}
/**
* Parses the action tileset definitions and puts them into a hash
* map, keyed on action name.
*/
protected HashMap parseActionTileSets ()
{
Digester digester = new Digester();
SwissArmyTileSetRuleSet srules = new SwissArmyTileSetRuleSet();
String aprefix = "actions" + ActionRuleSet.ACTION_PATH;
srules.setPrefix(aprefix);
digester.addRuleSet(srules);
digester.addSetProperties(aprefix);
digester.addSetNext(aprefix + SwissArmyTileSetRuleSet.TILESET_PATH,
"addTileSet", TileSet.class.getName());
HashMap actsets = new ActionMap();
digester.push(actsets);
try {
FileInputStream fin = new FileInputStream(_actionDef);
BufferedInputStream bin = new BufferedInputStream(fin);
digester.parse(bin);
} catch (FileNotFoundException fnfe) {
String errmsg = "Unable to load action definition file " +
"[path=" + _actionDef.getPath() + "].";
throw new BuildException(errmsg, fnfe);
} catch (Exception e) {
throw new BuildException("Parsing error.", e);
}
return actsets;
}
/** Used when parsing action tilesets. */
public static class ActionMap extends HashMap
{
public void setName (String name) {
_name = name;
}
public void addTileSet (TileSet set) {
set.setName(_name);
put(_name, set);
}
protected String _name;
}
/**
* Loads the hashmap ID broker from its persistent representation in
* the specified file.
*/
protected HashMapIDBroker loadBroker (File mapfile)
throws BuildException
{
HashMapIDBroker broker = new HashMapIDBroker();
try {
FileInputStream fin = new FileInputStream(mapfile);
DataInputStream din =
new DataInputStream(new BufferedInputStream(fin));
broker.readFrom(din);
} catch (FileNotFoundException fnfe) {
// if the file doesn't yet exist, start with a blank broker
} catch (Exception e) {
throw new BuildException("Error loading component ID map " +
"[mapfile=" + mapfile + "]", e);
}
return broker;
}
/**
* Stores a persistent representation of the supplied hashmap ID
* broker in the specified file.
*/
protected void saveBroker (File mapfile, ComponentIDBroker broker)
throws BuildException
{
HashMapIDBroker hbroker = (HashMapIDBroker)broker;
// bail if the broker wasn't modified
if (!hbroker.isModified()) {
return;
}
try {
FileOutputStream fout = new FileOutputStream(mapfile);
DataOutputStream dout =
new DataOutputStream(new BufferedOutputStream(fout));
hbroker.writeTo(dout);
dout.close();
} catch (IOException ioe) {
throw new BuildException("Unable to store component ID map " +
"[mapfile=" + mapfile + "]", ioe);
}
}
protected static class HashMapIDBroker
extends HashMap implements ComponentIDBroker
{
public int getComponentID (String cclass, String cname)
throws PersistenceException
{
Tuple key = new Tuple(cclass, cname);
Integer cid = (Integer)get(key);
if (cid == null) {
cid = new Integer(++_nextCID);
put(key, cid);
}
return cid.intValue();
}
public void commit ()
throws PersistenceException
{
// nothing doing
}
public boolean isModified ()
{
return _nextCID != _startCID;
}
public void writeTo (DataOutputStream dout)
throws IOException
{
// write out the size of the table
dout.writeInt(size());
// write out the keys and values
Iterator keys = keySet().iterator();
while (keys.hasNext()) {
Tuple key = (Tuple)keys.next();
Integer value = (Integer)get(key);
dout.writeUTF((String)key.left);
dout.writeUTF((String)key.right);
dout.writeInt(value.intValue());
}
// write out our most recently assigned component id
dout.writeInt(_nextCID);
}
public void readFrom (DataInputStream din)
throws IOException
{
// figure out how many keys and values we'll be reading
int size = din.readInt();
// and read them on in
for (int i = 0; i < size; i++) {
String cclass = din.readUTF();
String cname = din.readUTF();
int value = din.readInt();
put(new Tuple(cclass, cname), new Integer(value));
}
// read in our most recently assigned component id
_nextCID = din.readInt();
// keep track of this so that we can tell if we were modified
_startCID = _nextCID;
}
protected int _nextCID = 0;
protected int _startCID = 0;
}
/** The path to our component bundle file. */
protected File _target;
/** The path to our component map file. */
protected File _mapfile;
/** The path to our action tilesets definition file. */
protected File _actionDef;
/** The component directory root. */
protected String _root;
/** A list of filesets that contain tile images. */
protected ArrayList _filesets = new ArrayList();
}