diff options
Diffstat (limited to 'src/main/java/de/thedevstack/conversationsplus/xml')
4 files changed, 547 insertions, 0 deletions
diff --git a/src/main/java/de/thedevstack/conversationsplus/xml/Element.java b/src/main/java/de/thedevstack/conversationsplus/xml/Element.java new file mode 100644 index 00000000..429f98db --- /dev/null +++ b/src/main/java/de/thedevstack/conversationsplus/xml/Element.java @@ -0,0 +1,188 @@ +package de.thedevstack.conversationsplus.xml; + +import java.util.ArrayList; +import java.util.Hashtable; +import java.util.List; + +import de.thedevstack.android.logcat.Logging; +import de.thedevstack.conversationsplus.Config; +import de.thedevstack.conversationsplus.utils.XmlHelper; +import de.thedevstack.conversationsplus.xmpp.jid.InvalidJidException; +import de.thedevstack.conversationsplus.xmpp.jid.Jid; + +public class Element { + private final String name; + private Hashtable<String, String> attributes = new Hashtable<>(); + private String content; + protected List<Element> children = new ArrayList<>(); + + public Element(String name) { + this.name = name; + } + + public Element(String name, String xmlns) { + this.name = name; + this.setAttribute("xmlns", xmlns); + } + + public Element addChild(Element child) { + this.content = null; + children.add(child); + return child; + } + + public Element addChild(String name) { + this.content = null; + Element child = new Element(name); + children.add(child); + return child; + } + + public Element addChild(String name, String xmlns) { + this.content = null; + Element child = new Element(name); + child.setAttribute("xmlns", xmlns); + children.add(child); + return child; + } + + public Element setContent(String content) { + this.content = content; + this.children.clear(); + return this; + } + + public Element findChild(String name) { + for (Element child : this.children) { + if (child.getName().equals(name)) { + return child; + } + } + return null; + } + + public String findChildContent(String name) { + Element element = findChild(name); + return element == null ? null : element.getContent(); + } + + public Element findChild(String name, String xmlns) { + for (Element child : this.children) { + if (name.equals(child.getName()) && xmlns.equals(child.getAttribute("xmlns"))) { + return child; + } + } + return null; + } + + public String findChildContent(String name, String xmlns) { + Element element = findChild(name,xmlns); + return element == null ? null : element.getContent(); + } + + public boolean hasChild(final String name) { + return findChild(name) != null; + } + + public boolean hasChild(final String name, final String xmlns) { + return findChild(name, xmlns) != null; + } + + public List<Element> getChildren() { + return this.children; + } + + public Element setChildren(List<Element> children) { + this.children = children; + return this; + } + + public final String getContent() { + return content; + } + + public Element setAttribute(String name, String value) { + if (name != null && value != null) { + this.attributes.put(name, value); + } + return this; + } + + public Element setAttributes(Hashtable<String, String> attributes) { + this.attributes = attributes; + return this; + } + + public String getAttribute(String name) { + if (this.attributes.containsKey(name)) { + return this.attributes.get(name); + } else { + return null; + } + } + + public Jid getAttributeAsJid(String name) { + final String jid = this.getAttribute(name); + if (jid != null && !jid.isEmpty()) { + try { + return Jid.fromString(jid); + } catch (final InvalidJidException e) { + Logging.e(Config.LOGTAG, "could not parse jid " + jid); + return null; + } + } + return null; + } + + public Hashtable<String, String> getAttributes() { + return this.attributes; + } + + public String toString() { + StringBuilder elementOutput = new StringBuilder(); + if ((content == null) && (children.size() == 0)) { + Tag emptyTag = Tag.empty(name); + emptyTag.setAtttributes(this.attributes); + elementOutput.append(emptyTag.toString()); + } else { + Tag startTag = Tag.start(name); + startTag.setAtttributes(this.attributes); + elementOutput.append(startTag); + if (content != null) { + elementOutput.append(XmlHelper.encodeEntities(content)); + } else { + for (Element child : children) { + elementOutput.append(child.toString()); + } + } + Tag endTag = Tag.end(name); + elementOutput.append(endTag); + } + return elementOutput.toString(); + } + + public final String getName() { + return name; + } + + public void clearChildren() { + this.children.clear(); + } + + public void setAttribute(String name, long value) { + this.setAttribute(name, Long.toString(value)); + } + + public void setAttribute(String name, int value) { + this.setAttribute(name, Integer.toString(value)); + } + + public boolean getAttributeAsBoolean(String name) { + String attr = getAttribute(name); + return (attr != null && (attr.equalsIgnoreCase("true") || attr.equalsIgnoreCase("1"))); + } + + public String getNamespace() { + return getAttribute("xmlns"); + } +} diff --git a/src/main/java/de/thedevstack/conversationsplus/xml/Tag.java b/src/main/java/de/thedevstack/conversationsplus/xml/Tag.java new file mode 100644 index 00000000..84e37363 --- /dev/null +++ b/src/main/java/de/thedevstack/conversationsplus/xml/Tag.java @@ -0,0 +1,104 @@ +package de.thedevstack.conversationsplus.xml; + +import java.util.Hashtable; +import java.util.Iterator; +import java.util.Map.Entry; +import java.util.Set; + +import de.thedevstack.conversationsplus.utils.XmlHelper; + +public class Tag { + public static final int NO = -1; + public static final int START = 0; + public static final int END = 1; + public static final int EMPTY = 2; + + protected int type; + protected String name; + protected Hashtable<String, String> attributes = new Hashtable<String, String>(); + + protected Tag(int type, String name) { + this.type = type; + this.name = name; + } + + public static Tag no(String text) { + return new Tag(NO, text); + } + + public static Tag start(String name) { + return new Tag(START, name); + } + + public static Tag end(String name) { + return new Tag(END, name); + } + + public static Tag empty(String name) { + return new Tag(EMPTY, name); + } + + public String getName() { + return name; + } + + public String getAttribute(String attrName) { + return this.attributes.get(attrName); + } + + public Tag setAttribute(String attrName, String attrValue) { + this.attributes.put(attrName, attrValue); + return this; + } + + public Tag setAtttributes(Hashtable<String, String> attributes) { + this.attributes = attributes; + return this; + } + + public boolean isStart(String needle) { + if (needle == null) + return false; + return (this.type == START) && (needle.equals(this.name)); + } + + public boolean isEnd(String needle) { + if (needle == null) + return false; + return (this.type == END) && (needle.equals(this.name)); + } + + public boolean isNo() { + return (this.type == NO); + } + + public String toString() { + StringBuilder tagOutput = new StringBuilder(); + tagOutput.append('<'); + if (type == END) { + tagOutput.append('/'); + } + tagOutput.append(name); + if (type != END) { + Set<Entry<String, String>> attributeSet = attributes.entrySet(); + Iterator<Entry<String, String>> it = attributeSet.iterator(); + while (it.hasNext()) { + Entry<String, String> entry = it.next(); + tagOutput.append(' '); + tagOutput.append(entry.getKey()); + tagOutput.append("=\""); + tagOutput.append(XmlHelper.encodeEntities(entry.getValue())); + tagOutput.append('"'); + } + } + if (type == EMPTY) { + tagOutput.append('/'); + } + tagOutput.append('>'); + return tagOutput.toString(); + } + + public Hashtable<String, String> getAttributes() { + return this.attributes; + } +} diff --git a/src/main/java/de/thedevstack/conversationsplus/xml/TagWriter.java b/src/main/java/de/thedevstack/conversationsplus/xml/TagWriter.java new file mode 100644 index 00000000..c0f028af --- /dev/null +++ b/src/main/java/de/thedevstack/conversationsplus/xml/TagWriter.java @@ -0,0 +1,114 @@ +package de.thedevstack.conversationsplus.xml; + +import java.io.IOException; +import java.io.OutputStream; +import java.io.OutputStreamWriter; +import java.util.concurrent.LinkedBlockingQueue; + +import de.thedevstack.conversationsplus.xmpp.stanzas.AbstractStanza; + +public class TagWriter { + + private OutputStream plainOutputStream; + private OutputStreamWriter outputStream; + private boolean finshed = false; + private LinkedBlockingQueue<AbstractStanza> writeQueue = new LinkedBlockingQueue<AbstractStanza>(); + private Thread asyncStanzaWriter = new Thread() { + private boolean shouldStop = false; + + @Override + public void run() { + while (!shouldStop) { + if ((finshed) && (writeQueue.size() == 0)) { + return; + } + try { + AbstractStanza output = writeQueue.take(); + if (outputStream == null) { + shouldStop = true; + } else { + outputStream.write(output.toString()); + outputStream.flush(); + } + } catch (IOException e) { + shouldStop = true; + } catch (InterruptedException e) { + shouldStop = true; + } + } + } + }; + + public TagWriter() { + } + + public void setOutputStream(OutputStream out) throws IOException { + if (out == null) { + throw new IOException(); + } + this.plainOutputStream = out; + this.outputStream = new OutputStreamWriter(out); + } + + public OutputStream getOutputStream() throws IOException { + if (this.plainOutputStream == null) { + throw new IOException(); + } + return this.plainOutputStream; + } + + public TagWriter beginDocument() throws IOException { + if (outputStream == null) { + throw new IOException("output stream was null"); + } + outputStream.write("<?xml version='1.0'?>"); + outputStream.flush(); + return this; + } + + public TagWriter writeTag(Tag tag) throws IOException { + if (outputStream == null) { + throw new IOException("output stream was null"); + } + outputStream.write(tag.toString()); + outputStream.flush(); + return this; + } + + public TagWriter writeElement(Element element) throws IOException { + if (outputStream == null) { + throw new IOException("output stream was null"); + } + outputStream.write(element.toString()); + outputStream.flush(); + return this; + } + + public TagWriter writeStanzaAsync(AbstractStanza stanza) { + if (finshed) { + return this; + } else { + if (!asyncStanzaWriter.isAlive()) { + try { + asyncStanzaWriter.start(); + } catch (IllegalThreadStateException e) { + // already started + } + } + writeQueue.add(stanza); + return this; + } + } + + public void finish() { + this.finshed = true; + } + + public boolean finished() { + return (this.writeQueue.size() == 0); + } + + public boolean isActive() { + return outputStream != null; + } +} diff --git a/src/main/java/de/thedevstack/conversationsplus/xml/XmlReader.java b/src/main/java/de/thedevstack/conversationsplus/xml/XmlReader.java new file mode 100644 index 00000000..e02f4fc0 --- /dev/null +++ b/src/main/java/de/thedevstack/conversationsplus/xml/XmlReader.java @@ -0,0 +1,141 @@ +package de.thedevstack.conversationsplus.xml; + +import android.os.PowerManager; +import android.os.PowerManager.WakeLock; +import android.util.Xml; + +import org.xmlpull.v1.XmlPullParser; +import org.xmlpull.v1.XmlPullParserException; + +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; + +import de.thedevstack.android.logcat.Logging; +import de.thedevstack.conversationsplus.Config; + +public class XmlReader { + private XmlPullParser parser; + private PowerManager.WakeLock wakeLock; + private InputStream is; + + public XmlReader(WakeLock wakeLock) { + this.parser = Xml.newPullParser(); + try { + this.parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, + true); + } catch (XmlPullParserException e) { + Logging.d(Config.LOGTAG, "error setting namespace feature on parser"); + } + this.wakeLock = wakeLock; + } + + public void setInputStream(InputStream inputStream) throws IOException { + if (inputStream == null) { + throw new IOException(); + } + this.is = inputStream; + try { + parser.setInput(new InputStreamReader(this.is)); + } catch (XmlPullParserException e) { + throw new IOException("error resetting parser"); + } + } + + public InputStream getInputStream() throws IOException { + if (this.is == null) { + throw new IOException(); + } + return is; + } + + public void reset() throws IOException { + if (this.is == null) { + throw new IOException(); + } + try { + parser.setInput(new InputStreamReader(this.is)); + } catch (XmlPullParserException e) { + throw new IOException("error resetting parser"); + } + } + + public Tag readTag() throws XmlPullParserException, IOException { + if (wakeLock.isHeld()) { + try { + wakeLock.release(); + } catch (RuntimeException re) { + } + } + try { + while (this.is != null + && parser.next() != XmlPullParser.END_DOCUMENT) { + wakeLock.acquire(); + if (parser.getEventType() == XmlPullParser.START_TAG) { + Tag tag = Tag.start(parser.getName()); + for (int i = 0; i < parser.getAttributeCount(); ++i) { + tag.setAttribute(parser.getAttributeName(i), + parser.getAttributeValue(i)); + } + String xmlns = parser.getNamespace(); + if (xmlns != null) { + tag.setAttribute("xmlns", xmlns); + } + return tag; + } else if (parser.getEventType() == XmlPullParser.END_TAG) { + Tag tag = Tag.end(parser.getName()); + return tag; + } else if (parser.getEventType() == XmlPullParser.TEXT) { + Tag tag = Tag.no(parser.getText()); + return tag; + } + } + if (wakeLock.isHeld()) { + try { + wakeLock.release(); + } catch (RuntimeException re) { + } + } + } catch (ArrayIndexOutOfBoundsException e) { + throw new IOException( + "xml parser mishandled ArrayIndexOufOfBounds", e); + } catch (StringIndexOutOfBoundsException e) { + throw new IOException( + "xml parser mishandled StringIndexOufOfBounds", e); + } catch (NullPointerException e) { + throw new IOException("xml parser mishandled NullPointerException", + e); + } catch (IndexOutOfBoundsException e) { + throw new IOException("xml parser mishandled IndexOutOfBound", e); + } + return null; + } + + public Element readElement(Tag currentTag) throws XmlPullParserException, + IOException { + Element element = new Element(currentTag.getName()); + element.setAttributes(currentTag.getAttributes()); + Tag nextTag = this.readTag(); + if (nextTag == null) { + throw new IOException("unterupted mid tag"); + } + if (nextTag.isNo()) { + element.setContent(nextTag.getName()); + nextTag = this.readTag(); + if (nextTag == null) { + throw new IOException("unterupted mid tag"); + } + } + while (!nextTag.isEnd(element.getName())) { + if (!nextTag.isNo()) { + Element child = this.readElement(nextTag); + element.addChild(child); + } + nextTag = this.readTag(); + if (nextTag == null) { + throw new IOException("unterupted mid tag"); + } + } + return element; + } +} |