org.stathissideris.ascii2image.core.ConfigurationParser Maven / Gradle / Ivy
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PlantUML is a component that allows to quickly write :
* sequence diagram,
* use case diagram,
* class diagram,
* activity diagram,
* component diagram,
* state diagram
* object diagram
/*
* DiTAA - Diagrams Through Ascii Art
*
* Copyright (C) 2004 Efstathios Sideris
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
package org.stathissideris.ascii2image.core;
import java.io.File;
import java.io.IOException;
import java.util.Collection;
import java.util.HashMap;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.stathissideris.ascii2image.graphics.CustomShapeDefinition;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
public class ConfigurationParser {
private static final boolean DEBUG = false;
private static final String INLCUDE_TAG_NAME = "include";
private static final String SHAPE_TAG_NAME = "shape";
private static final String SHAPE_GROUP_TAG_NAME = "shapes";
private String currentDir = "";
private File configFile;
private HashMap shapeDefinitions =
new HashMap();
public Collection getShapeDefinitions() {
return shapeDefinitions.values();
}
public HashMap getShapeDefinitionsHash() {
return shapeDefinitions;
}
public void parseFile(File file)
throws ParserConfigurationException, SAXException, IOException
{
configFile = file;
DefaultHandler handler = new XMLHandler();
// Use the default (non-validating) parser
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser saxParser = factory.newSAXParser();
saxParser.parse(file, handler);
}
private class XMLHandler extends DefaultHandler{
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
if(qName.equals(SHAPE_GROUP_TAG_NAME)){
if(attributes.getLength() == 1){
currentDir = attributes.getValue(0).trim();
if(currentDir.equals("")) currentDir = configFile.getParentFile().getAbsolutePath();
} else {
//the dir that contains the config file:
currentDir = configFile.getParentFile().getAbsolutePath();
}
}
if(qName.equals(SHAPE_TAG_NAME)){
CustomShapeDefinition definition = new CustomShapeDefinition();
int len = attributes.getLength();
for(int i = 0; i < len; i++){
String name = attributes.getQName(i);
String value = attributes.getValue(i);
if(name.equals("tag")){
definition.setTag(value);
} else if(name.equals("stretch")){
definition.setStretches(getBooleanFromAttributeValue(value));
} else if(name.equals("border")){
definition.setHasBorder(getBooleanFromAttributeValue(value));
} else if(name.equals("shadow")){
definition.setDropsShadow(getBooleanFromAttributeValue(value));
} else if(name.equals("comment")){
definition.setComment(value);
} else if(name.equals("filename")){
File file = new File(value);
if(file.isAbsolute()){
definition.setFilename(value);
} else { //relative to the location of the config file or to the group's base dir
definition.setFilename(createFilename(currentDir, value));
}
}
}
if(shapeDefinitions.containsKey(definition.getTag())){
CustomShapeDefinition oldDef = shapeDefinitions.get(definition.getTag());
System.err.println(
"*** Warning: shape \""+oldDef.getTag()+"\" (file: "
+oldDef.getFilename()+") has been redefined as file: "
+definition.getFilename()
);
}
File file = new File(definition.getFilename());
if(file.exists()){
shapeDefinitions.put(definition.getTag(), definition);
if(DEBUG) System.out.println(definition);
} else {
System.err.println("File "+file+" does not exist, skipping tag "+definition.getTag());
}
}
if(qName.equals(INLCUDE_TAG_NAME)){
if(attributes.getLength() == 1){
File includedFile = new File(attributes.getValue(0).trim());
if(!includedFile.isAbsolute()){
includedFile = new File(
createFilename(
configFile.getParentFile().getAbsolutePath(),
includedFile.getPath()));
}
if(!includedFile.exists()){
System.err.println("Included file "+includedFile+" does not exist, skipping");
return;
}
ConfigurationParser configParser = new ConfigurationParser();
try {
configParser.parseFile(includedFile);
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
HashMap shapes = configParser.getShapeDefinitionsHash();
shapeDefinitions.putAll(shapes);
}
}
}
}
private String createFilename(String baseDir, String filename){
if(baseDir == null || baseDir.trim().equals("")){
return filename;
}
if(baseDir.endsWith(File.separator)){
return baseDir + filename;
}
return baseDir + File.separator + filename;
}
private boolean getBooleanFromAttributeValue(String value){
value = value.toLowerCase();
if("no".equals(value)) return false;
if("false".equals(value)) return false;
if("yes".equals(value)) return true;
if("true".equals(value)) return true;
throw new IllegalArgumentException("value "+value+" cannot be interpreted as a boolean");
}
public static void main(String argv[]) throws ParserConfigurationException, SAXException, IOException {
ConfigurationParser parser = new ConfigurationParser();
parser.parseFile(new File("config.xml"));
parser.getShapeDefinitions();
}
}