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package edu.harvard.hul.ois.jhove.module.wave;

/**
 * Enum used to externalise the PDF modules message Strings. Using an enum
 * INSTANCE as a "trick" to ensure a single instance of the class. String
 * constants should be prefixed according to their use in the module:
 * 
 * WRN_ for warning strings, often logger messages.
 * INF_ for informational messages.
 * ERR_ for error messages that indicate a file is invalid or not well
 * formed.
 * 
 * When adding new messages try to adopt the following order for the naming
 * elements:
 * 
 * PREFIX: one of the three prefixes from the list above.
 * ENTITY_NAME: the name of the PDF entity causing the prohlem, e.g. FONT,
 * or DOC.
 * Problem: a short indicator of the problem type, e.g. MISSING, ILLEGAL,
 * etc.
 * 
 * The elements should be separated by underscores. The messages currently don't
 * follow a consistent vocabulary, that is terms such as invalid, illegal, or
 * malformed are used without definition.
 * 
 * @author Carl Wilson
 *         carlwilson AT github
 * @version 0.1 Created 1 Oct 2016:11:38:18
 */

public enum MessageConstants {
	INSTANCE;

	public static final String SUB_MESS_TYPE = "Type = ";
	public static final String SUB_MESS_BYTES_MISSING = "Bytes missing = ";
	public static final String SUB_MESS_TRUNCATED_CHUNK = "Truncated chunk = ";

	/**
	 * Information messages
	 */
	public static final String INF_CHU_TYPE_IGND = "Ignored unrecognized chunk: ";
	public static final String INF_CHU_DATA_IGND = "Ignored unrecognized data in chunk: ";
	public static final String INF_DATA_CHUNK_TYPE_IGN = "Ignored Associated Data chunk of type: ";
	public static final String INF_INFO_CHUNK_TYPE_IGN = "Ignored Info List chunk of type: ";
	public static final String INF_FILE_TOO_LARGE = "File too large to validate";

	/**
	 * Error messages
	 */
	public static final String ERR_CHUNK_DUP = "Duplicate chunks found for type: ";
	public static final String ERR_EXIF_COMM_TOO_SHORT = "Exif User Comment chunk is too short";
	public static final String ERR_EXIF_VER_CHUNK_LEN_WRNG = "Incorrect length for Exif Version chunk";
	public static final String ERR_CHUNK_SIZE_INVAL = "Invalid chunk size";
	public static final String ERR_BWF_VER_UNREC = "Unrecognized BWF version: ";
	public static final String ERR_EOF_UNEXPECTED = "Unexpected end of file";
	public static final String ERR_FILE_IO_EXCEP = "Exception reading file: ";
	public static final String ERR_FMT_CHUNK_MISS = "No Format chunk found";
	public static final String ERR_DATA_CHUNK_MISS = "No Data chunk found";
	public static final String ERR_DATA_BEFORE_FMT = "Data chunk appears before Format chunk";
	public static final String ERR_LINK_CHUNK_SAX_EXCEP = "SAXException in reading Link chunk";
	public static final String ERR_LINK_CHUNK_PARS_EXCEP = "ParserConfigurationException in reading Link chunk";
	public static final String ERR_LIST_TYPE_UNK = "Unknown list type in Associated Data List chunk";
	public static final String ERR_LIST_CHUNK_TYPE_UNK = "List chunk contains unknown type: ";
	public static final String ERR_PEC_FORMAT_INVAL = "Invalid format value in Peak Envelope chunk";
	public static final String ERR_PEC_PPV_INVAL = "Invalid pointsPerValue in Peak Envelope chunk";
	public static final String ERR_RIFF_CHUNK_MISSING = "File does not start with RIFF header";
	public static final String ERR_RIFF_HDR_TYPE_NOT_WAV = "Form type in RIFF header is not WAVE";
	public static final String ERR_DS64_NOT_FIRST_CHUNK = "Data Size 64 chunk not in required location";
}