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330
hrmsEjb/net/sf/jasperreports/engine/util/JRXmlWriteHelper.java
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330
hrmsEjb/net/sf/jasperreports/engine/util/JRXmlWriteHelper.java
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package net.sf.jasperreports.engine.util;
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import java.awt.Color;
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import java.io.IOException;
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import java.io.Writer;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Map;
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import net.sf.jasperreports.engine.JRExpression;
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public class JRXmlWriteHelper {
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private final Writer writer;
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private final List indents;
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private int indent;
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private final List elementStack;
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private StringBuffer buffer;
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private StackElement lastElement;
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protected static class Attribute {
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String name;
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String value;
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Attribute(String name, String value) {
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this.name = name;
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this.value = value;
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}
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}
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protected static class StackElement {
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String name;
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List atts;
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boolean hasChildren;
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StackElement(String name) {
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this.name = name;
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this.atts = new ArrayList();
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this.hasChildren = false;
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}
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void addAttribute(String attName, String value) {
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this.atts.add(new JRXmlWriteHelper.Attribute(attName, value));
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}
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}
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public JRXmlWriteHelper(Writer writer) {
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this.writer = writer;
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this.indents = new ArrayList();
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this.indent = 0;
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this.elementStack = new ArrayList();
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this.lastElement = null;
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clearBuffer();
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}
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public void writeProlog(String encoding) throws IOException {
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this.writer.write("<?xml version=\"1.0\" encoding=\"" + encoding + "\"?>\n");
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}
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public void writePublicDoctype(String rootElement, String description, String dtdLocation) throws IOException {
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this.writer.write("<!DOCTYPE " + rootElement + " PUBLIC \"" + description + "\" \"" + dtdLocation + "\">\n\n");
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}
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public void startElement(String name) {
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this.indent++;
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this.lastElement = new StackElement(name);
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this.elementStack.add(this.lastElement);
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}
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protected void writeParents(boolean content) throws IOException {
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int stackSize = this.elementStack.size();
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int startWrite = stackSize - 1;
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while (startWrite >= 0) {
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StackElement element = this.elementStack.get(startWrite);
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if (element.hasChildren)
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break;
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if (startWrite < stackSize - 1) {
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element.hasChildren = true;
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} else {
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element.hasChildren |= content;
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}
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startWrite--;
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}
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for (int i = startWrite + 1; i < stackSize; i++) {
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StackElement element = this.elementStack.get(i);
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writeElementAttributes(element, i);
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}
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}
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public void writeCDATA(String data) throws IOException {
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if (data != null) {
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writeParents(true);
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this.buffer.append(getIndent(this.indent));
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this.buffer.append("<![CDATA[");
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this.buffer.append(data);
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this.buffer.append("]]>\n");
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flushBuffer();
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}
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}
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public void writeCDATAElement(String name, String data) throws IOException {
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if (data != null) {
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writeParents(true);
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this.buffer.append(getIndent(this.indent));
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this.buffer.append('<');
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this.buffer.append(name);
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this.buffer.append("><![CDATA[");
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this.buffer.append(data);
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this.buffer.append("]]></");
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this.buffer.append(name);
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this.buffer.append(">\n");
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flushBuffer();
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}
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}
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public void writeCDATAElement(String name, String data, String attName, String attValue) throws IOException {
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writeCDATAElement(name, data, attName, attValue);
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}
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public void writeCDATAElement(String name, String data, String attName, Object attValue) throws IOException {
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if (data != null) {
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writeParents(true);
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this.buffer.append(getIndent(this.indent));
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this.buffer.append('<');
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this.buffer.append(name);
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if (attValue != null) {
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this.buffer.append(' ');
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this.buffer.append(attName);
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this.buffer.append("=\"");
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this.buffer.append(attValue);
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this.buffer.append("\"");
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}
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this.buffer.append("><![CDATA[");
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this.buffer.append(data);
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this.buffer.append("]]></");
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this.buffer.append(name);
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this.buffer.append(">\n");
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flushBuffer();
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}
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}
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protected void writeElementAttributes(StackElement element, int level) throws IOException {
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this.buffer.append(getIndent(level));
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this.buffer.append('<');
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this.buffer.append(element.name);
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for (Iterator i = element.atts.iterator(); i.hasNext(); ) {
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Attribute att = i.next();
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this.buffer.append(' ');
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this.buffer.append(att.name);
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this.buffer.append("=\"");
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this.buffer.append(att.value);
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this.buffer.append('"');
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}
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if (element.hasChildren) {
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this.buffer.append(">\n");
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} else {
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this.buffer.append("/>\n");
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}
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flushBuffer();
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}
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public void closeElement() throws IOException {
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closeElement(false);
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}
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public void closeElement(boolean skipIfEmpty) throws IOException {
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this.indent--;
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if (skipIfEmpty && this.lastElement.atts.size() == 0 && !this.lastElement.hasChildren) {
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clearBuffer();
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} else {
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writeParents(false);
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if (this.lastElement.hasChildren) {
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this.buffer.append(getIndent(this.indent));
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this.buffer.append("</");
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this.buffer.append(this.lastElement.name);
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this.buffer.append(">\n");
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flushBuffer();
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}
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}
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this.elementStack.remove(this.indent);
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this.lastElement = (this.indent > 0) ? this.elementStack.get(this.indent - 1) : null;
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}
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protected char[] getIndent(int level) {
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if (level >= this.indents.size())
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for (int i = this.indents.size(); i <= level; i++) {
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char[] str = new char[i];
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Arrays.fill(str, '\t');
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this.indents.add(str);
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}
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return this.indents.get(level);
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}
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protected void flushBuffer() throws IOException {
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this.writer.write(this.buffer.toString());
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clearBuffer();
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}
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protected void clearBuffer() {
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this.buffer = new StringBuffer();
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}
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public void writeExpression(String name, JRExpression expression, boolean writeClass) throws IOException {
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writeExpression(name, expression, writeClass, null);
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}
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public void writeExpression(String name, JRExpression expression, boolean writeClass, String defaultClassName) throws IOException {
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if (expression != null)
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if (writeClass && (defaultClassName == null || !defaultClassName.equals(expression.getValueClassName()))) {
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writeCDATAElement(name, expression.getText(), "class", expression.getValueClassName());
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} else {
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writeCDATAElement(name, expression.getText());
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}
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}
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protected void writeAttribute(String name, String value) {
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this.lastElement.addAttribute(name, value);
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}
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public void addAttribute(String name, String value) {
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if (value != null)
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writeAttribute(name, value);
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}
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public void addEncodedAttribute(String name, String value) {
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if (value != null)
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writeAttribute(name, JRStringUtil.xmlEncode(value));
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}
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public void addAttribute(String name, String value, String defaultValue) {
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if (value != null && !value.equals(defaultValue))
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writeAttribute(name, value);
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}
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public void addEncodedAttribute(String name, String value, String defaultValue) {
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if (value != null && !value.equals(defaultValue))
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writeAttribute(name, JRStringUtil.xmlEncode(value));
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}
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public void addAttribute(String name, Object value) {
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if (value != null)
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writeAttribute(name, String.valueOf(value));
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}
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public void addAttribute(String name, int value) {
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writeAttribute(name, String.valueOf(value));
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}
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public void addAttributePositive(String name, int value) {
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if (value > 0)
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writeAttribute(name, String.valueOf(value));
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}
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public void addAttribute(String name, float value) {
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writeAttribute(name, String.valueOf(value));
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}
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public void addAttribute(String name, float value, float defaultValue) {
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if (value != defaultValue)
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writeAttribute(name, String.valueOf(value));
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}
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public void addAttribute(String name, double value) {
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writeAttribute(name, String.valueOf(value));
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}
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public void addAttribute(String name, double value, double defaultValue) {
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if (value != defaultValue)
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writeAttribute(name, String.valueOf(value));
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}
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public void addAttribute(String name, int value, int defaultValue) {
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if (value != defaultValue)
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addAttribute(name, value);
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}
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public void addAttribute(String name, boolean value) {
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writeAttribute(name, String.valueOf(value));
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}
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public void addAttribute(String name, boolean value, boolean defaultValue) {
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if (value != defaultValue)
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addAttribute(name, value);
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}
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public void addAttribute(String name, Color color) {
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if (color != null)
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writeAttribute(name, "#" + JRColorUtil.getColorHexa(color));
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}
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public void addAttribute(String name, Color value, Color defaultValue) {
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if (value != null && value.getRGB() != defaultValue.getRGB())
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addAttribute(name, value);
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}
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public void addAttribute(String name, byte value, Map xmlValues) {
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String xmlValue = (String)xmlValues.get(new Byte(value));
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writeAttribute(name, xmlValue);
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}
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public void addAttribute(String name, int value, Map xmlValues) {
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String xmlValue = (String)xmlValues.get(new Integer(value));
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writeAttribute(name, xmlValue);
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}
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public void addAttribute(String name, byte value, Map xmlValues, byte defaultValue) {
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if (value != defaultValue)
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addAttribute(name, value, xmlValues);
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}
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public void addAttribute(String name, Object value, Map xmlValues) {
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if (value != null) {
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String xmlValue = (String)xmlValues.get(value);
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writeAttribute(name, xmlValue);
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}
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}
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public void addAttribute(String name, Object value, Map xmlValues, Object defaultValue) {
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if (!value.equals(defaultValue))
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addAttribute(name, value, xmlValues);
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}
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}
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