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/*******************************************************************************
* Copyright (c) 2008, 2018 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.tools.internal;
import java.util.*;
public abstract class AbstractItem implements JNIItem {
HashMap<String, Object> params;
static String[] split(String str, String separator) {
return JNIGenerator.split(str, separator);
}
void checkParams() {
if (params != null) return;
parse(getMetaData());
}
public String flatten() {
checkParams();
StringBuilder buffer = new StringBuilder();
Set<String> set = params.keySet();
String[] keys = set.toArray(new String[set.size()]);
Arrays.sort(keys);
for (int j = 0; j < keys.length; j++) {
String key = keys[j];
Object value = params.get(key);
String valueStr = "";
if (value instanceof String) {
valueStr = (String)value;
} else if (value instanceof String[]) {
String[] values = (String[])value;
StringBuilder valueBuffer = new StringBuilder();
for (int i = 0; i < values.length; i++) {
if (i != 0) valueBuffer.append(" ");
valueBuffer.append(values[i]);
}
valueStr = valueBuffer.toString();
} else {
valueStr = value.toString();
}
if (valueStr.length() > 0) {
if (buffer.length() != 0) buffer.append(",");
buffer.append(key);
buffer.append("=");
String quote = "";
if (valueStr.indexOf(',') != -1) {
quote = valueStr.indexOf('"') != -1 ? "'" : "\"";
}
buffer.append(quote);
buffer.append(valueStr);
buffer.append(quote);
}
}
return buffer.toString();
}
@Override
public String[] getFlags() {
Object flags = getParam("flags");
if (flags == null) return new String[0];
if (flags instanceof String[]) return (String[])flags;
String[] result = split((String)flags, " ");
setParam("flags", result);
return result;
}
@Override
public boolean getFlag(String flag) {
String[] flags = getFlags();
for (int i = 0; i < flags.length; i++) {
if (flags[i].equals(flag)) return true;
}
return false;
}
public abstract String getMetaData();
@Override
public Object getParam(String key) {
checkParams();
Object value = params.get(key);
return value == null ? "" : value;
}
@Override
public boolean getGenerate() {
return !getFlag(FLAG_NO_GEN);
}
@Override
public void setFlags(String[] flags) {
setParam("flags", flags);
}
public void parse(String str) {
this.params = new HashMap<>();
int length = str.length();
if (length == 0) return;
int index = 0;
while (index < length) {
int equals = str.indexOf('=', index);
if (equals == -1) {
System.out.println("Error: " + str + " index=" + index + " length=" + length);
break;
}
String key = str.substring(index, equals).trim();
equals++;
while (equals < length && Character.isWhitespace(str.charAt(equals))) equals++;
char c = str.charAt(equals), ending = ',';
switch (c) {
case '"':
case '\'':
equals++;
ending = c;
break;
}
int end = equals;
while (end < length && str.charAt(end) != ending) end++;
String value = str.substring(equals, end).trim();
setParam(key, value);
if (ending != ',') {
while (end < length && str.charAt(end) != ',') end++;
}
index = end + 1;
}
}
@Override
public void setFlag(String flag, boolean value) {
String[] flags = getFlags();
HashSet<String> set = new HashSet<>(Arrays.asList(flags));
if (value) {
set.add(flag);
} else {
set.remove(flag);
}
setFlags(set.toArray(new String[set.size()]));
}
@Override
public void setGenerate(boolean value) {
setFlag(FLAG_NO_GEN, !value);
}
public abstract void setMetaData(String value);
@Override
public void setParam(String key, Object value) {
checkParams();
params.put(key, value);
setMetaData(flatten());
}
}
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