Android XmlPullParser Skip skipExit(final XmlPullParser pp, final String tagName)

Description

skip Exit

License

Open Source License

Declaration

public static void skipExit(final XmlPullParser pp, final String tagName)
            throws XmlPullParserException, IOException 

Method Source Code

//package com.java2s;
/*//from  ww  w  . ja  v  a 2s. c  o  m
 * For license please see accompanying LICENSE.txt file (available also at http://www.xmlpull.org/).
 * According to www.xmlpull.org, this code is in the public domain.
 */

import java.io.IOException;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

public class Main {
    public static void skipExit(final XmlPullParser pp)
            throws XmlPullParserException, IOException {
        skipToEnd(pp);

        if (pp.getEventType() != XmlPullParser.END_TAG)
            throw new IllegalStateException("expecting end tag to exit");

        pp.next();
    }

    public static void skipExit(final XmlPullParser pp, final String tagName)
            throws XmlPullParserException, IOException {
        skipToEnd(pp);

        pp.require(XmlPullParser.END_TAG, null, tagName);
        pp.next();
    }

    private static void skipToEnd(final XmlPullParser pp)
            throws XmlPullParserException, IOException {
        while (pp.getEventType() != XmlPullParser.END_TAG) {
            if (pp.getEventType() == XmlPullParser.START_TAG)
                next(pp);
            else if (pp.getEventType() == XmlPullParser.TEXT)
                pp.next();
            else
                throw new IllegalStateException();
        }
    }

    public static void next(final XmlPullParser pp)
            throws XmlPullParserException, IOException {
        skipSubTree(pp);
        pp.next();
    }

    public static void require(final XmlPullParser pp, final String tagName)
            throws XmlPullParserException, IOException {
        skipWhitespace(pp);

        pp.require(XmlPullParser.START_TAG, null, tagName);
    }

    /**
     * Skip sub tree that is currently porser positioned on. <br>
     * NOTE: parser must be on START_TAG and when funtion returns parser will be positioned on corresponding END_TAG
     */
    public static void skipSubTree(final XmlPullParser pp)
            throws XmlPullParserException, IOException {
        pp.require(XmlPullParser.START_TAG, null, null);

        int level = 1;
        while (level > 0) {
            final int eventType = pp.next();
            if (eventType == XmlPullParser.END_TAG)
                --level;
            else if (eventType == XmlPullParser.START_TAG)
                ++level;
        }
    }

    private static void skipWhitespace(final XmlPullParser pp)
            throws XmlPullParserException, IOException {
        if (pp.getEventType() == XmlPullParser.START_DOCUMENT)
            pp.next();
        if (pp.getEventType() == XmlPullParser.TEXT && pp.isWhitespace())
            pp.next();
    }
}

Related

1. skipCurrentTag(XmlPullParser parser)
2. skipCurrentTag(XmlPullParser parser)
3. skipCurrentTag(XmlPullParser parser)
4. skipCurrentTag(XmlPullParser parser)
5. skipExit(final XmlPullParser pp)
6. skipSubTree(XmlPullParser pp)
7. skipSubTree(XmlPullParser pp)
8. skipSubTree(final XmlPullParser pp)
9. skipTag(XmlPullParser parser)