/*******************************************************************************
* Copyright (c) 2011, 2012, 2013, 2014 Red Hat, Inc.
* All rights reserved.
* This program is made available under the terms of the
* Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Red Hat, Inc. - initial API and implementation
*
* @author Brian Fitzpatrick
******************************************************************************/
package org.eclipse.bpmn2.modeler.runtime.jboss.jbpm5.wid;
import java.util.ArrayList;
import java.util.List;
/**
* @author bfitzpat
*
*/
public class WIDParser {
public enum Section {
PARAMETERS, RESULTS, DEPENDENCIES
}
/**
* Takes in the String content of a *.wid/*.conf file and
* parses it into a HashMap of WorkItemDefinition classes.
*
* @param content the String content of a WID definition.
* @return a HashMap of the parsed WID definition, indexed by the custom
* work item task names.
* @throws WIDException
*/
public static List<WorkItemDefinition> parse(String content) throws WIDException {
List<WorkItemDefinition> widMap = new ArrayList<WorkItemDefinition>();
if (content == null) {
WIDException widException =
new WIDException(
"No data passed to WIDHandler.processWorkDefinitionsContent method"); //$NON-NLS-1$
throw widException;
}
if (widMap != null) {
widMap.clear();
}
String strings[] = content.split("[\n]+"); //$NON-NLS-1$
int openBrackets = 0;
WorkItemDefinition currentWid = new WorkItemDefinitionImpl();
Section current = Section.PARAMETERS;
for (int i = 0; i < strings.length; i++) {
String trim = strings[i].trim();
if (trim.length() == 0) continue;
if (trim.startsWith("import ") || trim.startsWith("import\t")) {
// collect "import" statements so we can resolve fully qualified class names
// in Parameters and Results types
String fullyQualifiedClassName = trim.substring(7, trim.length()-1);
currentWid.addImport(fullyQualifiedClassName);
}
if (trim.startsWith("[") || trim.endsWith("[") || trim.endsWith(":")) { //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
if (trim.endsWith(":") && i < strings.length - 1) { //$NON-NLS-1$
trim = strings[i].trim() + strings[i+1].trim();
} else {
openBrackets++;
}
String[] nameValue = trim.split("[:]+"); //$NON-NLS-1$
if (nameValue.length == 2) {
String name = nameValue[0].replace('"', ' ').trim();
if (name.equalsIgnoreCase("parameters")) { //$NON-NLS-1$
current = Section.PARAMETERS;
} else if (name.equalsIgnoreCase("results")) { //$NON-NLS-1$
current = Section.RESULTS;
} else if (name.equalsIgnoreCase("dependencies")) { //$NON-NLS-1$
current = Section.DEPENDENCIES;
}
}
}
if (trim.startsWith("]") || trim.endsWith("]")) { //$NON-NLS-1$ //$NON-NLS-2$
openBrackets--;
if (openBrackets == 1) {
if (currentWid != null && currentWid.getName() != null) {
widMap.add(currentWid);
}
currentWid = new WorkItemDefinitionImpl();
}
}
if (trim.contains(":")) { //$NON-NLS-1$
String[] nameValue = trim.split("[:]+"); //$NON-NLS-1$
if (nameValue.length == 2 || nameValue.length == 3) {
String name = nameValue[0].replace('"', ' ').trim();
int valueIndex = 1;
if (nameValue.length == 3) {
valueIndex = 2;
name = name + ':' + nameValue[1].replace('"', ' ').trim();
}
String stringValue = nameValue[valueIndex].replace('"', ' ').replace(',', ' ').
replace('[',' ').trim();
if (openBrackets == 2 && stringValue.trim().length() > 0) {
if (name.equalsIgnoreCase("name")) { //$NON-NLS-1$
currentWid.setName(stringValue);
} else if (name.equalsIgnoreCase("displayName")) { //$NON-NLS-1$
currentWid.setDispalyName(stringValue);
} else if (name.equalsIgnoreCase("description")) { //$NON-NLS-1$
currentWid.setDescription(stringValue);
} else if (name.equalsIgnoreCase("category")) { //$NON-NLS-1$
currentWid.setCategory(stringValue);
} else if (name.equalsIgnoreCase("icon")) { //$NON-NLS-1$
currentWid.setIcon(stringValue);
} else if (name.equalsIgnoreCase("customEditor")) { //$NON-NLS-1$
currentWid.setCustomEditor(stringValue);
} else if (name.equalsIgnoreCase("eclipse:customEditor")) { //$NON-NLS-1$
currentWid.setEclipseCustomEditor(stringValue);
}
} else if (openBrackets == 3 && stringValue.trim().length() > 0) {
WorkItemDefinition.Parameter parameter = new WorkItemDefinition.Parameter();
if (stringValue.startsWith("new") && stringValue.indexOf("(")>0) { //$NON-NLS-1$ //$NON-NLS-2$
int index = stringValue.indexOf("("); //$NON-NLS-1$
stringValue = stringValue.substring(3,index).trim();
// look up the DataType in the registry and replace the DataType
// name with its Java type equivalent name
String fqn = currentWid.findImport(stringValue);
if (fqn!=null)
parameter.type = fqn;
else
parameter.type = stringValue;
// the parameter's value (a drools-core DataType object) will be constructed
// at the time the WorkEditor is created. We can't do it here because we don't
// have access to the JavaProject in which the WorkEditor java class is defined.
}
else {
parameter.type = "java.lang.String";
parameter.value = stringValue;
}
if (current == Section.PARAMETERS)
currentWid.getParameters().put(name, parameter);
else if (current == Section.RESULTS)
currentWid.getResults().put(name, parameter);
}
}
}
}
return widMap;
}
}