org.wildfly.client.config.TextXMLStreamReader Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of wildfly-client-all
This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).
The newest version!
/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2015 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.wildfly.client.config;

import static java.lang.Math.min;
import static org.wildfly.client.config._private.ConfigMessages.msg;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.nio.charset.Charset;
import java.util.Arrays;
import java.util.NoSuchElementException;

import javax.xml.namespace.NamespaceContext;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLInputFactory;

class TextXMLStreamReader implements ConfigurationXMLStreamReader {

    private final String charsetName;
    private final CountingReader reader;
    private final ConfigurationXMLStreamReader parent;
    private final URI uri;
    private final XMLLocation includedFrom;

    private char[] current = new char[512];
    private int len;
    private char[] next = new char[512];
    private int nextLen;

    TextXMLStreamReader(final String charsetName, final InputStream inputStream, final ConfigurationXMLStreamReader parent, final URI uri) throws UnsupportedEncodingException {
        this(charsetName, new InputStreamReader(inputStream, charsetName), parent, uri);
    }

    TextXMLStreamReader(final Charset charset, final InputStream inputStream, final ConfigurationXMLStreamReader parent, final URI uri) {
        this(charset.name(), new InputStreamReader(inputStream, charset), parent, uri);
    }

    TextXMLStreamReader(final String charsetName, final Reader reader, final ConfigurationXMLStreamReader parent, final URI uri) {
        this(charsetName, reader instanceof CountingReader ? (CountingReader) reader : new CountingReader(reader), parent, uri);
    }

    TextXMLStreamReader(final String charsetName, final CountingReader reader, final ConfigurationXMLStreamReader parent, final URI uri) {
        this.charsetName = charsetName;
        this.reader = reader;
        this.parent = parent;
        this.uri = uri;
        includedFrom = this.parent.getLocation();
    }

    public XMLLocation getIncludedFrom() {
        return includedFrom;
    }

    public int next() throws ConfigXMLParseException {
        if (! hasNext()) {
            throw new NoSuchElementException();
        }
        // swap buffers
        char[] old = current;
        current = next;
        len = nextLen;
        next = old;
        nextLen = 0;
        return CHARACTERS;
    }

    public URI getUri() {
        return uri;
    }

    public XMLInputFactory getXmlInputFactory() {
        throw new UnsupportedOperationException();
    }

    public boolean hasNext() throws ConfigXMLParseException {
        if (nextLen == 0) {
            int res;
            try {
                res = reader.read(next);
            } catch (IOException e) {
                throw msg.failedToReadInput(getLocation(), e);
            }
            if (res == -1) {
                return false;
            }
            nextLen = res;
        }
        return true;
    }

    public void close() throws ConfigXMLParseException {
        try {
            reader.close();
        } catch (IOException e) {
            throw msg.failedToCloseInput(getLocation(), e);
        }
    }

    public String getNamespaceURI(final String prefix) {
        return null;
    }

    public String getAttributeValue(final String namespaceURI, final String localName) {
        throw new IllegalStateException();
    }

    public int getAttributeCount() {
        throw new IllegalStateException();
    }

    public QName getAttributeName(final int index) {
        throw new IllegalStateException();
    }

    public String getAttributeNamespace(final int index) {
        throw new IllegalStateException();
    }

    public String getAttributeLocalName(final int index) {
        throw new IllegalStateException();
    }

    public String getAttributePrefix(final int index) {
        throw new IllegalStateException();
    }

    public String getAttributeType(final int index) {
        throw new IllegalStateException();
    }

    public String getAttributeValue(final int index) {
        throw new IllegalStateException();
    }

    public boolean isAttributeSpecified(final int index) {
        throw new IllegalStateException();
    }

    public int getNamespaceCount() {
        throw new IllegalStateException();
    }

    public String getNamespacePrefix(final int index) {
        throw new IllegalStateException();
    }

    public String getNamespaceURI(final int index) {
        throw new IllegalStateException();
    }

    public NamespaceContext getNamespaceContext() {
        throw new IllegalStateException();
    }

    public int getEventType() {
        return len == 0 ? START_DOCUMENT : CHARACTERS;
    }

    public String getText() {
        if (len == 0) throw new IllegalStateException();
        return new String(current, 0, len);
    }

    public char[] getTextCharacters() {
        return Arrays.copyOf(current, len);
    }

    public int getTextCharacters(final int sourceStart, final char[] target, final int targetStart, final int length) {
        if (sourceStart > len || targetStart > length) return 0;
        int realLen = min(len - sourceStart, length);
        System.arraycopy(current, sourceStart, target, targetStart, realLen);
        return realLen;
    }

    public int getTextStart() {
        return 0;
    }

    public int getTextLength() {
        if (len == 0) throw new IllegalStateException();
        return len;
    }

    public String getEncoding() {
        return charsetName;
    }

    public XMLLocation getLocation() {
        return new XMLLocation(includedFrom, uri, reader.getLineNumber(), reader.getColumnNumber(), reader.getCharacterOffset());
    }

    public QName getName() {
        throw new IllegalStateException();
    }

    public String getLocalName() {
        throw new IllegalStateException();
    }

    public String getNamespaceURI() {
        throw new IllegalStateException();
    }

    public String getPrefix() {
        throw new IllegalStateException();
    }

    public String getVersion() {
        return null;
    }

    public String getCharacterEncodingScheme() {
        return null;
    }

    public String getPITarget() {
        return null;
    }

    public String getPIData() {
        return null;
    }
}