Source Code Cross Referenced for ArchiveFileConstants.java in  » Web-Crawler » heritrix » org » archive » io » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Web Crawler » heritrix » org.archive.io 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* $Id: ArchiveFileConstants.java 4620 2006-09-12 19:41:23Z stack-sf $
002:         *
003:         * Created on August 16th, 2006.
004:         *
005:         * Copyright (C) 2006 Internet Archive.
006:         *
007:         * This file is part of the Heritrix web crawler (crawler.archive.org).
008:         *
009:         * Heritrix is free software; you can redistribute it and/or modify
010:         * it under the terms of the GNU Lesser Public License as published by
011:         * the Free Software Foundation; either version 2.1 of the License, or
012:         * any later version.
013:         *
014:         * Heritrix is distributed in the hope that it will be useful,
015:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
016:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
017:         * GNU Lesser Public License for more details.
018:         *
019:         * You should have received a copy of the GNU Lesser Public License
020:         * along with Heritrix; if not, write to the Free Software
021:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
022:         */
023:        package org.archive.io;
024:
025:        /**
026:         * Constants used by Archive files and in Archive file processing.
027:         * @author stack
028:         * @version $Date: 2006-09-12 19:41:23 +0000 (Tue, 12 Sep 2006) $ $Revision: 4620 $
029:         */
030:        public interface ArchiveFileConstants {
031:            /**
032:             * Suffix given to files currently in use.
033:             */
034:            public static final String OCCUPIED_SUFFIX = ".open";
035:
036:            /**
037:             * Suffix appended to 'broken' files.
038:             */
039:            public static final String INVALID_SUFFIX = ".invalid";
040:
041:            /**
042:             * Compressed file extention.
043:             */
044:            public static final String COMPRESSED_FILE_EXTENSION = "gz";
045:
046:            /**
047:             * Dot plus compressed file extention.
048:             */
049:            public static final String DOT_COMPRESSED_FILE_EXTENSION = "."
050:                    + COMPRESSED_FILE_EXTENSION;
051:
052:            /**
053:             * Key for the Archive File version field.
054:             */
055:            public static final String VERSION_FIELD_KEY = "version";
056:
057:            /**
058:             * Key for the Archive File length field.
059:             */
060:            public static final String LENGTH_FIELD_KEY = "length";
061:
062:            /**
063:             * Key for the Archive File type field.
064:             */
065:            public static final String TYPE_FIELD_KEY = "type";
066:
067:            /**
068:             * Key for the Archive File URL field.
069:             */
070:            public static final String URL_FIELD_KEY = "subject-uri";
071:
072:            /**
073:             * Key for the Archive File Creation Date field.
074:             */
075:            public static final String DATE_FIELD_KEY = "creation-date";
076:
077:            /**
078:             * Key for the Archive File mimetype field.
079:             */
080:            public static final String MIMETYPE_FIELD_KEY = "content-type";
081:
082:            /**
083:             * Key for the Archive File record field.
084:             */
085:            public static final String RECORD_IDENTIFIER_FIELD_KEY = "record-identifier";
086:
087:            /**
088:             * Key for the Archive Record absolute offset into Archive file.
089:             */
090:            public static final String ABSOLUTE_OFFSET_KEY = "absolute-offset";
091:
092:            public static final String READER_IDENTIFIER_FIELD_KEY = "reader-identifier";
093:
094:            /**
095:             * Size used to preallocate stringbuffer used outputting a cdx line.
096:             * The numbers below are guesses at sizes of each of the cdx fields.
097:             * The ones in the below are spaces. Here is the legend used outputting
098:             * the cdx line: CDX b e a m s c V n g.  Consult cdx documentation on
099:             * meaning of each of these fields.
100:             */
101:            public static final int CDX_LINE_BUFFER_SIZE = 14 + 1 + 15 + 1
102:                    + 1024 + 1 + 24 + 1 + +3 + 1 + 32 + 1 + 20 + 1 + 20 + 1
103:                    + 64;
104:
105:            public static final String DEFAULT_DIGEST_METHOD = "SHA-1";
106:
107:            public static final char SINGLE_SPACE = ' ';
108:
109:            public static final String CRLF = "\r\n";
110:
111:            public static final String CDX = "cdx";
112:            public static final String DUMP = "dump";
113:            public static final String GZIP_DUMP = "gzipdump";
114:            public static final String HEADER = "header";
115:            public static final String NOHEAD = "nohead";
116:            public static final String CDX_FILE = "cdxfile";
117:        }
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