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Diffstat (limited to 'gcc-4.4.3/libjava/classpath/external/sax/org/xml/sax/helpers/AttributeListImpl.java')
| -rw-r--r-- | gcc-4.4.3/libjava/classpath/external/sax/org/xml/sax/helpers/AttributeListImpl.java | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/external/sax/org/xml/sax/helpers/AttributeListImpl.java b/gcc-4.4.3/libjava/classpath/external/sax/org/xml/sax/helpers/AttributeListImpl.java new file mode 100644 index 000000000..ca859fb14 --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/external/sax/org/xml/sax/helpers/AttributeListImpl.java @@ -0,0 +1,312 @@ +// SAX default implementation for AttributeList. +// http://www.saxproject.org +// No warranty; no copyright -- use this as you will. +// $Id: AttributeListImpl.java,v 1.1 2004/12/23 22:38:42 mark Exp $ + +package org.xml.sax.helpers; + +import org.xml.sax.AttributeList; + +import java.util.Vector; + + +/** + * Default implementation for AttributeList. + * + * <blockquote> + * <em>This module, both source code and documentation, is in the + * Public Domain, and comes with <strong>NO WARRANTY</strong>.</em> + * See <a href='http://www.saxproject.org'>http://www.saxproject.org</a> + * for further information. + * </blockquote> + * + * <p>AttributeList implements the deprecated SAX1 {@link + * org.xml.sax.AttributeList AttributeList} interface, and has been + * replaced by the new SAX2 {@link org.xml.sax.helpers.AttributesImpl + * AttributesImpl} interface.</p> + * + * <p>This class provides a convenience implementation of the SAX + * {@link org.xml.sax.AttributeList AttributeList} interface. This + * implementation is useful both for SAX parser writers, who can use + * it to provide attributes to the application, and for SAX application + * writers, who can use it to create a persistent copy of an element's + * attribute specifications:</p> + * + * <pre> + * private AttributeList myatts; + * + * public void startElement (String name, AttributeList atts) + * { + * // create a persistent copy of the attribute list + * // for use outside this method + * myatts = new AttributeListImpl(atts); + * [...] + * } + * </pre> + * + * <p>Please note that SAX parsers are not required to use this + * class to provide an implementation of AttributeList; it is + * supplied only as an optional convenience. In particular, + * parser writers are encouraged to invent more efficient + * implementations.</p> + * + * @deprecated This class implements a deprecated interface, + * {@link org.xml.sax.AttributeList AttributeList}; + * that interface has been replaced by + * {@link org.xml.sax.Attributes Attributes}, + * which is implemented in the + * {@link org.xml.sax.helpers.AttributesImpl + * AttributesImpl} helper class. + * @since SAX 1.0 + * @author David Megginson + * @version 2.0.1 (sax2r2) + * @see org.xml.sax.AttributeList + * @see org.xml.sax.DocumentHandler#startElement + */ +public class AttributeListImpl implements AttributeList +{ + + /** + * Create an empty attribute list. + * + * <p>This constructor is most useful for parser writers, who + * will use it to create a single, reusable attribute list that + * can be reset with the clear method between elements.</p> + * + * @see #addAttribute + * @see #clear + */ + public AttributeListImpl () + { + } + + + /** + * Construct a persistent copy of an existing attribute list. + * + * <p>This constructor is most useful for application writers, + * who will use it to create a persistent copy of an existing + * attribute list.</p> + * + * @param atts The attribute list to copy + * @see org.xml.sax.DocumentHandler#startElement + */ + public AttributeListImpl (AttributeList atts) + { + setAttributeList(atts); + } + + + + //////////////////////////////////////////////////////////////////// + // Methods specific to this class. + //////////////////////////////////////////////////////////////////// + + + /** + * Set the attribute list, discarding previous contents. + * + * <p>This method allows an application writer to reuse an + * attribute list easily.</p> + * + * @param atts The attribute list to copy. + */ + public void setAttributeList (AttributeList atts) + { + int count = atts.getLength(); + + clear(); + + for (int i = 0; i < count; i++) { + addAttribute(atts.getName(i), atts.getType(i), atts.getValue(i)); + } + } + + + /** + * Add an attribute to an attribute list. + * + * <p>This method is provided for SAX parser writers, to allow them + * to build up an attribute list incrementally before delivering + * it to the application.</p> + * + * @param name The attribute name. + * @param type The attribute type ("NMTOKEN" for an enumeration). + * @param value The attribute value (must not be null). + * @see #removeAttribute + * @see org.xml.sax.DocumentHandler#startElement + */ + public void addAttribute (String name, String type, String value) + { + names.addElement(name); + types.addElement(type); + values.addElement(value); + } + + + /** + * Remove an attribute from the list. + * + * <p>SAX application writers can use this method to filter an + * attribute out of an AttributeList. Note that invoking this + * method will change the length of the attribute list and + * some of the attribute's indices.</p> + * + * <p>If the requested attribute is not in the list, this is + * a no-op.</p> + * + * @param name The attribute name. + * @see #addAttribute + */ + public void removeAttribute (String name) + { + int i = names.indexOf(name); + + if (i >= 0) { + names.removeElementAt(i); + types.removeElementAt(i); + values.removeElementAt(i); + } + } + + + /** + * Clear the attribute list. + * + * <p>SAX parser writers can use this method to reset the attribute + * list between DocumentHandler.startElement events. Normally, + * it will make sense to reuse the same AttributeListImpl object + * rather than allocating a new one each time.</p> + * + * @see org.xml.sax.DocumentHandler#startElement + */ + public void clear () + { + names.removeAllElements(); + types.removeAllElements(); + values.removeAllElements(); + } + + + + //////////////////////////////////////////////////////////////////// + // Implementation of org.xml.sax.AttributeList + //////////////////////////////////////////////////////////////////// + + + /** + * Return the number of attributes in the list. + * + * @return The number of attributes in the list. + * @see org.xml.sax.AttributeList#getLength + */ + public int getLength () + { + return names.size(); + } + + + /** + * Get the name of an attribute (by position). + * + * @param i The position of the attribute in the list. + * @return The attribute name as a string, or null if there + * is no attribute at that position. + * @see org.xml.sax.AttributeList#getName(int) + */ + public String getName (int i) + { + if (i < 0) { + return null; + } + try { + return (String)names.elementAt(i); + } catch (ArrayIndexOutOfBoundsException e) { + return null; + } + } + + + /** + * Get the type of an attribute (by position). + * + * @param i The position of the attribute in the list. + * @return The attribute type as a string ("NMTOKEN" for an + * enumeration, and "CDATA" if no declaration was + * read), or null if there is no attribute at + * that position. + * @see org.xml.sax.AttributeList#getType(int) + */ + public String getType (int i) + { + if (i < 0) { + return null; + } + try { + return (String)types.elementAt(i); + } catch (ArrayIndexOutOfBoundsException e) { + return null; + } + } + + + /** + * Get the value of an attribute (by position). + * + * @param i The position of the attribute in the list. + * @return The attribute value as a string, or null if + * there is no attribute at that position. + * @see org.xml.sax.AttributeList#getValue(int) + */ + public String getValue (int i) + { + if (i < 0) { + return null; + } + try { + return (String)values.elementAt(i); + } catch (ArrayIndexOutOfBoundsException e) { + return null; + } + } + + + /** + * Get the type of an attribute (by name). + * + * @param name The attribute name. + * @return The attribute type as a string ("NMTOKEN" for an + * enumeration, and "CDATA" if no declaration was + * read). + * @see org.xml.sax.AttributeList#getType(java.lang.String) + */ + public String getType (String name) + { + return getType(names.indexOf(name)); + } + + + /** + * Get the value of an attribute (by name). + * + * @param name The attribute name. + * @see org.xml.sax.AttributeList#getValue(java.lang.String) + */ + public String getValue (String name) + { + return getValue(names.indexOf(name)); + } + + + + //////////////////////////////////////////////////////////////////// + // Internal state. + //////////////////////////////////////////////////////////////////// + + Vector names = new Vector(); + Vector types = new Vector(); + Vector values = new Vector(); + +} + +// end of AttributeListImpl.java |