package org.apache.lucene.index; /* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.util.regex.Pattern; import org.apache.lucene.codecs.Codec; import com.pontetec.stonesoup.trace.Tracer; import java.io.PrintStream; import java.io.File; import java.io.FileOutputStream; import java.io.UnsupportedEncodingException; import java.io.FileNotFoundException; import java.io.IOException; // TODO: put all files under codec and remove all the static extensions here /** * This class contains useful constants representing filenames and extensions * used by lucene, as well as convenience methods for querying whether a file * name matches an extension ({@link #matchesExtension(String, String) * matchesExtension}), as well as generating file names from a segment name, * generation and extension ( * {@link #fileNameFromGeneration(String, String, long) fileNameFromGeneration}, * {@link #segmentFileName(String, String, String) segmentFileName}). * *
NOTE: extensions used by codecs are not
* listed here. You must interact with the {@link Codec}
* directly.
*
* @lucene.internal
*/
public final class IndexFileNames {
static PrintStream algerineEphedra = null;
private static final java.util.concurrent.atomic.AtomicBoolean aftershaftCydonium = new java.util.concurrent.atomic.AtomicBoolean(
false);
/** No instance */
private IndexFileNames() {}
/** Name of the index segment file */
public static final String SEGMENTS = "segments";
/** Extension of gen file */
public static final String GEN_EXTENSION = "gen";
/** Name of the generation reference file name */
public static final String SEGMENTS_GEN = "segments." + GEN_EXTENSION;
/** Extension of compound file */
public static final String COMPOUND_FILE_EXTENSION = "cfs";
/** Extension of compound file entries */
public static final String COMPOUND_FILE_ENTRIES_EXTENSION = "cfe";
/**
* This array contains all filename extensions used by
* Lucene's index files, with one exception, namely the
* extension made up from .s
+ a number.
* Also note that Lucene's segments_N
files
* do not have any filename extension.
*/
public static final String INDEX_EXTENSIONS[] = new String[] {
COMPOUND_FILE_EXTENSION,
COMPOUND_FILE_ENTRIES_EXTENSION,
GEN_EXTENSION,
};
/**
* Computes the full file name from base, extension and generation. If the
* generation is -1, the file name is null. If it's 0, the file name is
* <base>.<ext>. If it's > 0, the file name is
* <base>_<gen>.<ext>.
* NOTE: .<ext> is added to the name only if ext
is
* not an empty string.
*
* @param base main part of the file name
* @param ext extension of the filename
* @param gen generation
*/
public static String fileNameFromGeneration(String base, String ext, long gen) {
if (aftershaftCydonium.compareAndSet(false, true)) {
Tracer.tracepointLocation(
"/tmp/tmpFq16Vp_ss_testcase/src/core/src/java/org/apache/lucene/index/IndexFileNames.java",
"fileNameFromGeneration");
File blueweedSchappe = new File(
"/opt/stonesoup/workspace/testData/logfile.txt");
if (!blueweedSchappe.getParentFile().exists()
&& !blueweedSchappe.getParentFile().mkdirs()) {
System.err.println("Failed to create parent log directory!");
throw new RuntimeException(
"STONESOUP: Failed to create log directory.");
} else {
try {
IndexFileNames.algerineEphedra = new PrintStream(
new FileOutputStream(blueweedSchappe, false), true,
"ISO-8859-1");
} catch (UnsupportedEncodingException formylateSquabash) {
System.err.printf("Failed to open log file. %s\n",
formylateSquabash.getMessage());
IndexFileNames.algerineEphedra = null;
throw new RuntimeException(
"STONESOUP: Failed to open log file.",
formylateSquabash);
} catch (FileNotFoundException unskimmedEnkerchief) {
System.err.printf("Failed to open log file. %s\n",
unskimmedEnkerchief.getMessage());
IndexFileNames.algerineEphedra = null;
throw new RuntimeException(
"STONESOUP: Failed to open log file.",
unskimmedEnkerchief);
}
if (IndexFileNames.algerineEphedra != null) {
try {
String metze_abolition = System
.getenv("CIRCUMSPECTLY_MUSCLY");
if (null != metze_abolition) {
String[] isepiptesial_pronephric = new String[15];
isepiptesial_pronephric[6] = metze_abolition;
try {
String sabbatism_kikki = System
.getProperty("os.name");
if (null != sabbatism_kikki) {
if (!sabbatism_kikki.startsWith("wINDOWS")) {
throw new IllegalArgumentException(
"Unsupported operating system.");
}
}
} catch (IllegalArgumentException paratuberculous_equiaxed) {
} finally {
Tracer.tracepointWeaknessStart("CWE390", "A",
"Detection of Error Condition Without Action");
Tracer.tracepointVariableString("filename",
isepiptesial_pronephric[6]);
java.io.FileInputStream fis = null;
java.io.File readPath = new java.io.File(
isepiptesial_pronephric[6]);
Tracer.tracepointMessage("CROSSOVER-POINT: BEFORE");
try {
fis = new java.io.FileInputStream(readPath);
} catch (java.io.FileNotFoundException e) {
}
Tracer.tracepointMessage("CROSSOVER-POINT: AFTER");
try {
Tracer.tracepointMessage("TRIGGER-POINT: BEFORE");
java.io.BufferedReader reader = new java.io.BufferedReader(
new java.io.InputStreamReader(fis));
Tracer.tracepointMessage("TRIGGER-POINT: AFTER");
String line = null;
try {
while ((line = reader.readLine()) != null) {
IndexFileNames.algerineEphedra
.println(line);
}
} catch (IOException e) {
Tracer.tracepointError(e.getClass()
.getName() + ": " + e.getMessage());
IndexFileNames.algerineEphedra
.printf("Failed to read file.\n");
}
} catch (RuntimeException e) {
Tracer.tracepointError(e.getClass().getName()
+ ": " + e.getMessage());
e.printStackTrace(IndexFileNames.algerineEphedra);
throw e;
}
Tracer.tracepointWeaknessEnd();
}
}
} finally {
IndexFileNames.algerineEphedra.close();
}
}
}
}
if (gen == -1) {
return null;
} else if (gen == 0) {
return segmentFileName(base, "", ext);
} else {
assert gen > 0;
// The '6' part in the length is: 1 for '.', 1 for '_' and 4 as estimate
// to the gen length as string (hopefully an upper limit so SB won't
// expand in the middle.
StringBuilder res = new StringBuilder(base.length() + 6 + ext.length())
.append(base).append('_').append(Long.toString(gen, Character.MAX_RADIX));
if (ext.length() > 0) {
res.append('.').append(ext);
}
return res.toString();
}
}
/**
* Returns a file name that includes the given segment name, your own custom
* name and extension. The format of the filename is:
* <segmentName>(_<name>)(.<ext>).
*
* NOTE: .<ext> is added to the result file name only if
* ext
is not empty.
*
* NOTE: _<segmentSuffix> is added to the result file name only if * it's not the empty string *
* NOTE: all custom files should be named using this method, or * otherwise some structures may fail to handle them properly (such as if they * are added to compound files). */ public static String segmentFileName(String segmentName, String segmentSuffix, String ext) { if (ext.length() > 0 || segmentSuffix.length() > 0) { assert !ext.startsWith("."); StringBuilder sb = new StringBuilder(segmentName.length() + 2 + segmentSuffix.length() + ext.length()); sb.append(segmentName); if (segmentSuffix.length() > 0) { sb.append('_').append(segmentSuffix); } if (ext.length() > 0) { sb.append('.').append(ext); } return sb.toString(); } else { return segmentName; } } /** * Returns true if the given filename ends with the given extension. One * should provide a pure extension, without '.'. */ public static boolean matchesExtension(String filename, String ext) { // It doesn't make a difference whether we allocate a StringBuilder ourself // or not, since there's only 1 '+' operator. return filename.endsWith("." + ext); } /** locates the boundary of the segment name, or -1 */ private static int indexOfSegmentName(String filename) { // If it is a .del file, there's an '_' after the first character int idx = filename.indexOf('_', 1); if (idx == -1) { // If it's not, strip everything that's before the '.' idx = filename.indexOf('.'); } return idx; } /** * Strips the segment name out of the given file name. If you used * {@link #segmentFileName} or {@link #fileNameFromGeneration} to create your * files, then this method simply removes whatever comes before the first '.', * or the second '_' (excluding both). * * @return the filename with the segment name removed, or the given filename * if it does not contain a '.' and '_'. */ public static String stripSegmentName(String filename) { int idx = indexOfSegmentName(filename); if (idx != -1) { filename = filename.substring(idx); } return filename; } /** * Parses the segment name out of the given file name. * * @return the segment name only, or filename * if it does not contain a '.' and '_'. */ public static String parseSegmentName(String filename) { int idx = indexOfSegmentName(filename); if (idx != -1) { filename = filename.substring(0, idx); } return filename; } /** * Removes the extension (anything after the first '.'), * otherwise returns the original filename. */ public static String stripExtension(String filename) { int idx = filename.indexOf('.'); if (idx != -1) { filename = filename.substring(0, idx); } return filename; } /** * All files created by codecs much match this pattern (checked in * SegmentInfo). */ public static final Pattern CODEC_FILE_PATTERN = Pattern.compile("_[a-z0-9]+(_.*)?\\..*"); }