git-svn-id: http://jspi.googlecode.com/svn/trunk@4 b34d1714-897f-11dd-9205-735403a6da14

[clinton/mirror/jspi/.git] / jspi / src / main / java / com / google / code / jspi / AttributeParser.java

package com.google.code.jspi;\r
\r
\r
import java.io.IOException;\r
import java.io.InputStream;\r
import java.lang.reflect.Constructor;\r
import java.lang.reflect.Field;\r
import java.lang.reflect.InvocationTargetException;\r
import java.net.URI;\r
import java.net.URISyntaxException;\r
import java.text.DateFormat;\r
import java.text.DecimalFormat;\r
import java.text.ParseException;\r
import java.text.SimpleDateFormat;\r
import java.util.Date;\r
import java.util.HashMap;\r
import java.util.HashSet;\r
import java.util.Locale;\r
import java.util.Map;\r
import java.util.Set;\r
import java.util.logging.Level;\r
import java.util.logging.Logger;\r
\r
import javax.print.attribute.Attribute;\r
import javax.print.attribute.EnumSyntax;\r
\r
import de.lohndirekt.print.attribute.AttributeWriter;\r
import de.lohndirekt.print.attribute.IppAttributeName;\r
import de.lohndirekt.print.attribute.IppDelimiterTag;\r
import de.lohndirekt.print.attribute.IppValueTag;\r
import de.lohndirekt.print.attribute.ipp.Charset;\r
import de.lohndirekt.print.exception.EndOfAttributesException;\r
\r
/**\r
 * @author bpusch\r
 *\r
 */\r
public final class AttributeParser {\r
\r
	private final static EndOfAttributesException END_OF_ATTRIBUTES_EXCEPTION = new EndOfAttributesException();\r
\r
	private final static Logger log = Logger.getLogger(AttributeParser.class.getName());\r
\r
	\r
\r
	/**\r
	 * @param name\r
	 * @param values\r
	 * @return\r
	 */\r
	private static Attribute getAttribute(String name, Object[] values) {\r
		Attribute attribute = null;\r
		IppAttributeName attrName = IppAttributeName.get(name);\r
		Class attrClass = attrName.getAttributeClass();\r
		Class superClass = attrClass.getSuperclass();\r
		if (superClass != null) {\r
			if (superClass.equals(EnumSyntax.class)) {\r
				try {\r
					Field[] fields = attrClass.getDeclaredFields();\r
					for (int i = 0; i < fields.length; i++) {\r
						Field field = fields[i];\r
						if (field.getType().equals(attrClass)) {\r
							EnumSyntax attr = (EnumSyntax) field.get(null);\r
							if (values[0] instanceof String) {\r
								if (attr.toString().equals(values[0])) {\r
									attribute = (Attribute) attr;\r
									break;\r
								}\r
							} else {\r
								if (attr.getValue() == ((Integer) values[0]).intValue()) {\r
									attribute = (Attribute) attr;\r
									break;\r
								}\r
							}\r
						}\r
					}\r
				} catch (SecurityException e) {\r
					log.log(Level.SEVERE, e.getMessage(), e);\r
				} catch (IllegalArgumentException e) {\r
					log.log(Level.SEVERE, e.getMessage(), e);\r
				} catch (IllegalAccessException e) {\r
					log.log(Level.SEVERE, e.getMessage(), e);\r
				}\r
\r
			} else {\r
				Class[] parameters = toClassArray(values);\r
				try {\r
					Constructor constructor = attrClass.getDeclaredConstructor(parameters);\r
					attribute = (Attribute) constructor.newInstance(values);\r
				} catch (SecurityException e) {\r
					log.log(Level.SEVERE, e.getMessage(), e);\r
				} catch (NoSuchMethodException e) {\r
					log.log(Level.SEVERE, e.getMessage(), e);\r
				} catch (IllegalArgumentException e) {\r
					log.log(Level.SEVERE, e.getMessage(), e);\r
				} catch (InstantiationException e) {\r
					log.log(Level.SEVERE, e.getMessage(), e);\r
				} catch (IllegalAccessException e) {\r
					log.log(Level.SEVERE, e.getMessage(), e);\r
				} catch (InvocationTargetException e) {\r
					log.log(Level.SEVERE, e.getMessage(), e);\r
				}\r
			}\r
		}\r
\r
		return attribute;\r
	}\r
\r
	/**\r
	     * @param byteArray\r
	     * @param byteCount\r
	     * @param lastAttribute\r
	     * @return\r
	     */\r
	private static Attribute parseAttribute(InputStream in, Attribute lastAttribute)\r
		throws IOException, EndOfAttributesException {\r
\r
		int valueTag;\r
		while ((valueTag = in.read()) < IppValueTag.UNSUPPORTED_VALUE.getValue()) {\r
			if (valueTag == IppDelimiterTag.END_ATTRIBUTES.getValue()) {\r
				throw END_OF_ATTRIBUTES_EXCEPTION;\r
			}\r
		}\r
\r
		int nameLength = parseInt2(in);\r
		//          parse the Attribute-Name\r
		String name;\r
		if (nameLength == 0) {\r
			name = lastAttribute.getName();\r
		} else {\r
			name = parseString(in, nameLength);\r
		}\r
		\r
\r
		Object[] values = parseValues(valueTag, in);\r
\r
		return getAttribute(name, values);\r
	}\r
    \r
    private static String parseString(InputStream in, int nameLength) throws IOException{\r
        return parseString(in, nameLength, Charset.US_ASCII.getValue());\r
    }\r
    \r
    private static String parseNameAndTextString(InputStream in, int nameLength) throws IOException{\r
        return parseString(in, nameLength, AttributeWriter.DEFAULT_CHARSET.getValue());\r
    }\r
\r
	/**\r
	 * @param in\r
	 * @param nameLength\r
	 */\r
	private static String parseString(InputStream in, int nameLength, String charsetName) throws IOException {\r
		byte[] bytes = new byte[nameLength];\r
		in.read(bytes);\r
		return new String(bytes, charsetName);\r
\r
	}\r
    \r
    \r
    \r
    \r
	/**\r
	 * @param byteArray\r
	 * @param valueOffset\r
	 * @return\r
	 */\r
	private static Date parseDate(InputStream in) throws IOException {\r
		DecimalFormat twoDigits = new DecimalFormat("00");\r
        DecimalFormat threeDigits = new DecimalFormat("000");\r
		DecimalFormat fourDigits = new DecimalFormat("0000");\r
		//year is encoded in network-byte order\r
		int year = parseInt2(in);\r
		int month = in.read();\r
		int day = in.read();\r
		int hour = in.read();\r
		int minute = in.read();\r
		int second = in.read();\r
		int deci = in.read();\r
		int mili = deci * 100;\r
		char direction = (char) in.read();\r
		int hoursFromUtc = in.read();\r
		int minutesFromUtc = in.read();\r
\r
		String yearString = fourDigits.format(year);\r
		String monthString = twoDigits.format(month);\r
		String dayString = twoDigits.format(day);\r
		String hourString = twoDigits.format(hour);\r
		String minuteString = twoDigits.format(minute);\r
		String secondString = twoDigits.format(second);\r
		String miliString = threeDigits.format(mili);\r
		String timeZone = direction + twoDigits.format(hoursFromUtc) + twoDigits.format(minutesFromUtc);\r
		String dateString =\r
			yearString\r
				+ "-"\r
				+ monthString\r
				+ "-"\r
				+ dayString\r
				+ " "\r
				+ hourString\r
				+ ":"\r
				+ minuteString\r
				+ ":"\r
				+ secondString\r
				+ ":"\r
				+ miliString\r
				+ timeZone;\r
		DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss:SSSZ");\r
		Date date = null;\r
		try {\r
			date = dateFormat.parse(dateString);\r
		} catch (ParseException e) {\r
			log.log(Level.SEVERE, e.getMessage(), e);\r
		}\r
		return date;\r
	}\r
\r
	private static int parseInt4(InputStream in) throws IOException {\r
\r
		//Same parsing as in java.io.DataInput readInt()\r
		int a = in.read();\r
		int b = in.read();\r
		int c = in.read();\r
		int d = in.read();\r
		int value = (((a & 0xff) << 24) | ((b & 0xff) << 16) | ((c & 0xff) << 8) | (d & 0xff));\r
		return value;\r
	}\r
\r
	/**\r
	 * @param bytes\r
	 * @param offset\r
	 * @return\r
	 */\r
	private static int parseInt4(byte[] bytes, int offset) {\r
\r
		//Same parsing as in java.io.DataInput readInt()\r
		byte a = bytes[offset++];\r
		byte b = bytes[offset++];\r
		byte c = bytes[offset++];\r
		byte d = bytes[offset++];\r
		int value = (((a & 0xff) << 24) | ((b & 0xff) << 16) | ((c & 0xff) << 8) | (d & 0xff));\r
		return value;\r
	}\r
\r
	private static int parseInt2(InputStream in) throws IOException {\r
\r
		//Same parsing as in java.io.DataInput readInt()\r
		int a = in.read();\r
		int b = in.read();\r
		int value = ((a & 0xff) << 8) | ((b & 0xff));\r
		return value;\r
	}\r
\r
	/**\r
	 * @param bytes\r
	 * @return map of attributes (key -> category, value -> Set with attributes)\r
	 * \r
	 *\r
	 */\r
	public static Map parseRequest(InputStream response) throws IOException {\r
		Map attributes = new HashMap();\r
		long start = System.currentTimeMillis();\r
		Attribute lastAttribute = null;\r
		boolean finished = false;\r
		response.read();\r
\r
		while (!finished) {\r
			Attribute attribute = null;\r
			try {\r
				attribute = parseAttribute(response, lastAttribute);\r
				if (attribute != null) {\r
					lastAttribute = attribute;\r
					attributes = put(attributes, attribute);\r
					if (log.isLoggable(Level.FINEST)) {\r
						log.finest("parsed attribute(" + attribute.getName() + "): " + attribute.toString());\r
					}\r
				} else {\r
					if (log.isLoggable(Level.FINEST)) {\r
\r
						log.finest("Attribute was null");\r
					}\r
				}\r
			} catch (EndOfAttributesException e) {\r
\r
				finished = true;\r
				if (log.isLoggable(Level.INFO)) {\r
					log.info("--- Attribute parsing finished ---");\r
				}\r
			}\r
		}\r
		long end = System.currentTimeMillis();\r
		if (log.isLoggable(Level.INFO)) {\r
		    log.info("Parsing took " + (end - start) + "ms.");\r
		}\r
		return attributes;\r
	}\r
\r
	\r
	/**\r
     * @param byteArray\r
     * @param valueOffset\r
     * @param valueLength\r
     * @return\r
     */\r
	private static URI parseUri(InputStream in, int valueLength) throws IOException {\r
		String uriString = parseString(in, valueLength);\r
		URI uri = null;\r
		try {\r
			uri = new URI(uriString);\r
		} catch (URISyntaxException e) {\r
			throw new RuntimeException(e);\r
		}\r
		return uri;\r
	}\r
\r
	\r
	/**\r
     * @param valueTag\r
     * @param byteArray\r
     * @param valueOffset\r
     * @param valueLength\r
     * @return\r
     */\r
	private static Object[] parseValues(int valueTag, InputStream in) throws IOException {\r
        int valueLength = parseInt2(in);\r
		Object[] values = null;\r
		if (valueTag == IppValueTag.INTEGER.getValue() || valueTag == IppValueTag.ENUM.getValue()) {\r
			Integer number = new Integer(parseInt4(in));\r
			values = new Object[] { number };\r
		} else if (\r
			valueTag == IppValueTag.STRING.getValue()\r
				|| valueTag == IppValueTag.TEXT.getValue()\r
				|| valueTag == IppValueTag.NAME.getValue()){\r
            String word = parseNameAndTextString(in, valueLength);\r
            values = new Object[] { word, Locale.getDefault()};                    \r
        } else if (\r
            valueTag == IppValueTag.CHARSET.getValue()\r
                || valueTag == IppValueTag.LANGUAGE.getValue()\r
				|| valueTag == IppValueTag.MIMETYPE.getValue()) {\r
			String word = parseString(in, valueLength);\r
			values = new Object[] { word, Locale.getDefault()};\r
		} else if (valueTag == IppValueTag.URI.getValue()) {\r
			URI uri = parseUri(in, valueLength);\r
			values = new Object[] { uri };\r
		} else if (valueTag == IppValueTag.KEYWORD.getValue()) {\r
			String word = parseString(in, valueLength);\r
			values = new Object[] { word, Locale.getDefault()};\r
		} else if (valueTag == IppValueTag.BOOLEAN.getValue()) {\r
			Integer bool = new Integer(in.read());\r
			values = new Object[] { bool };\r
		} else if (valueTag == IppValueTag.RANGE.getValue()) {\r
			Integer lowerBound = new Integer(parseInt4(in));\r
			Integer upperBound = new Integer(parseInt4(in));\r
			values = new Object[] { lowerBound, upperBound };\r
		} else if (valueTag == IppValueTag.DATE.getValue()) {\r
\r
			Date date = parseDate(in);\r
			values = new Object[] { date };\r
		} else if (valueTag == IppValueTag.NOVALUE.getValue()) {\r
			values = new Object[] {\r
			};\r
		} else {\r
			throw new IllegalArgumentException("\"" + Integer.toHexString(valueTag) + "\" is not a valid value-tag");\r
		}\r
		return values;\r
	}\r
\r
\r
	/**\r
	 * @param attributes\r
	 * @param attribute\r
	 */\r
	private static Map put(Map attributes, Attribute attribute) {\r
		Set values = (Set) attributes.get(attribute.getCategory());\r
		if (values == null) {\r
			values = new HashSet();\r
			attributes.put(attribute.getCategory(), values);\r
		}\r
		values.add(attribute);\r
		return attributes;\r
	}\r
\r
	/**\r
	 * @param values\r
	 * @return\r
	 */\r
	private static Class[] toClassArray(Object[] values) {\r
		Class[] classes = new Class[values.length];\r
		for (int i = 0; i < values.length; i++) {\r
			Class clazz = values[i].getClass();\r
			if (clazz.equals(Integer.class)) {\r
				clazz = int.class;\r
			}\r
			classes[i] = clazz;\r
		}\r
		return classes;\r
	}\r
\r
}\r