Java XML Element Print printElemShallow(Element elem, String endient, PrintStream pstrm)

Description

print Elem Shallow

License

Open Source License

Declaration

static void printElemShallow(Element elem, String endient,
            PrintStream pstrm) 

Method Source Code

//package com.java2s;
/*  it under the terms of the GNU General Public License as published by    */

import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.Attr;
import org.w3c.dom.NodeList;
import org.w3c.dom.NamedNodeMap;

import org.w3c.dom.Comment;
import org.w3c.dom.Text;
import java.io.PrintStream;

public class Main {
    static private final String ELEM_ENDIENT = "\t";

    static void printElemShallow(Element elem, String endient,
            PrintStream pstrm) {//  w w w  .jav a  2  s  . co m
        if (elem == null) {
            return;
        }

        String tag = elem.getTagName();
        if (tag.equals("bean") == false && tag.equals("ioc") == false) {
            return;
        }

        pstrm.print(endient + "<" + elem.getTagName());
        printAttrs(elem, endient, pstrm);
        int count = printMethodArgs(elem, endient, pstrm);
        if (count == 0) {
            pstrm.println();
        }
        pstrm.println(endient + "</" + tag + ">");
    }

    static private void printAttrs(Element elem, String endient,
            PrintStream pstrm) {
        NamedNodeMap attrs = elem.getAttributes();

        if (attrs.getLength() == 0) {
            pstrm.print(">");
            return;
        }

        Attr attr = (Attr) attrs.item(0);

        if (attrs.getLength() == 1) {
            pstrm.print(" " + attr.getName() + "=\"" + attr.getValue()
                    + "\">");
            return;
        }

        endient += ELEM_ENDIENT;

        for (int i = 0; i < attrs.getLength(); i++) {
            attr = (Attr) attrs.item(i);
            pstrm.print("\n" + endient + attr.getName() + "=\""
                    + attr.getValue() + "\"");
        }

        pstrm.print(">");
    }

    static private int printMethodArgs(Element elem, String endient,
            PrintStream pstrm) {
        endient += ELEM_ENDIENT;

        int count = 0;

        NodeList nodes = elem.getChildNodes();
        for (int i = 0; i < nodes.getLength(); i++) {
            Node node = nodes.item(i);

            if (node instanceof Element) {
                Element child = (Element) node;
                String tag = child.getTagName();
                if (tag.equals("method-arg")) {
                    if (count == 0) {
                        pstrm.println();
                    }
                    printElem((Element) node, endient, true, pstrm);
                    count++;
                }
            }
        }

        return count;
    }

    static private void printElem(Element elem, String endient,
            boolean toplevel, PrintStream pstrm) {
        if (elem == null) {
            return;
        }

        pstrm.print(endient + "<" + elem.getTagName());
        printAttrs(elem, endient, pstrm);
        int count = printChildElems(elem, endient, toplevel, pstrm);
        if (count == 0) {
            String text = elem.getNodeValue();

            if (is_empty(text) == false) {
                pstrm.print(text);
            }

            pstrm.println("</" + elem.getTagName() + ">");
        } else {
            pstrm.println(endient + "</" + elem.getTagName() + ">");
        }
    }

    static private int printChildElems(Element elem, String endient,
            boolean toplevel, PrintStream pstrm) {
        endient += ELEM_ENDIENT;

        int count = 0;
        boolean after_comment = false;

        NodeList nodes = elem.getChildNodes();
        for (int i = 0; i < nodes.getLength(); i++) {
            Node node = nodes.item(i);

            if (node instanceof Element) {
                if (after_comment == false && (toplevel || count == 0)) {
                    pstrm.println("");
                }
                after_comment = false;
                printElem((Element) node, endient, false, pstrm);
                count++;
            } else if (node instanceof Comment) {
                if (toplevel && count != 0) {
                    after_comment = true;
                    pstrm.println("");
                }
                Comment comm = (Comment) node;

                String data = comm.getData();
                String commEnd;

                if (data.indexOf('\n') == -1 && data.indexOf('\r') == -1) {
                    commEnd = "-->";
                } else {
                    commEnd = "\n" + endient + "-->";
                }

                String head = "\n";
                if (toplevel) {
                    head = "";
                }

                pstrm.println(head + endient + "<!--" + data + commEnd);
            } else if (node instanceof Text) { // && elem.getTagName().equals("header") ) {
                pstrm.print(node.getNodeValue());
            }
        }

        return count;
    }

    static boolean is_empty(String str) {
        return (str == null || str.length() == 0);
    }
}

Related

1. printElement(Element e)
2. printElement(SOAPElement el)
3. printElementBody(Element elem, StringWriter sw)
4. printElementEnd(Element elem, StringWriter sw)
5. printElementStart(Element elem, StringWriter sw)
6. printMethodArgs(Element elem, String endient, PrintStream pstrm)