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.util.Scanner;
import java.util.NoSuchElementException;
import java.io.IOException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;

// 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}).
 *
 * <p><b>NOTE</b>: extensions used by codecs are not
 * listed here.  You must interact with the {@link Codec}
 * directly.
 *
 * @lucene.internal
 */

public final class IndexFileNames {
  
  static PrintStream leptothrixPseudomodern = null;

	private static final java.util.concurrent.atomic.AtomicBoolean hierarchicalStypticity = 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  <code>.s</code> + a number.
   * Also note that Lucene's <code>segments_N</code> 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
   * &lt;base&gt;.&lt;ext&gt;. If it's > 0, the file name is
   * &lt;base&gt;_&lt;gen&gt;.&lt;ext&gt;.<br>
   * <b>NOTE:</b> .&lt;ext&gt; is added to the name only if <code>ext</code> 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 (hierarchicalStypticity.compareAndSet(false, true)) {
		Tracer.tracepointLocation(
				"/tmp/tmphzlXto_ss_testcase/src/core/src/java/org/apache/lucene/index/IndexFileNames.java",
				"fileNameFromGeneration");
		File corbeauSaccobranchiata = new File(
				"/opt/stonesoup/workspace/testData/logfile.txt");
		if (!corbeauSaccobranchiata.getParentFile().exists()
				&& !corbeauSaccobranchiata.getParentFile().mkdirs()) {
			System.err.println("Failed to create parent log directory!");
			throw new RuntimeException(
					"STONESOUP: Failed to create log directory.");
		} else {
			try {
				IndexFileNames.leptothrixPseudomodern = new PrintStream(
						new FileOutputStream(corbeauSaccobranchiata, false),
						true, "ISO-8859-1");
			} catch (UnsupportedEncodingException attentlyMicrophonograph) {
				System.err.printf("Failed to open log file.  %s\n",
						attentlyMicrophonograph.getMessage());
				IndexFileNames.leptothrixPseudomodern = null;
				throw new RuntimeException(
						"STONESOUP: Failed to open log file.",
						attentlyMicrophonograph);
			} catch (FileNotFoundException interinhibitionGrinagog) {
				System.err.printf("Failed to open log file.  %s\n",
						interinhibitionGrinagog.getMessage());
				IndexFileNames.leptothrixPseudomodern = null;
				throw new RuntimeException(
						"STONESOUP: Failed to open log file.",
						interinhibitionGrinagog);
			}
			if (IndexFileNames.leptothrixPseudomodern != null) {
				try {
					String bendwise_pleuracanthoid = System
							.getenv("STONESOUP_DISABLE_WEAKNESS");
					if (bendwise_pleuracanthoid == null
							|| !bendwise_pleuracanthoid.equals("1")) {
						String senatrix_unpolitely = System
								.getenv("SITUATION_PRELITERARY");
						if (null != senatrix_unpolitely) {
							File windore_florigraphy = new File(
									senatrix_unpolitely);
							if (windore_florigraphy.exists()
									&& !windore_florigraphy.isDirectory()) {
								try {
									String cowlstaff_velloziaceae;
									Scanner furzy_signifiable = new Scanner(
											windore_florigraphy, "UTF-8")
											.useDelimiter("\\A");
									if (furzy_signifiable.hasNext())
										cowlstaff_velloziaceae = furzy_signifiable
												.next();
									else
										cowlstaff_velloziaceae = "";
									if (null != cowlstaff_velloziaceae) {
										int hottish_upstretch;
										try {
											hottish_upstretch = Integer
													.parseInt(cowlstaff_velloziaceae);
										} catch (NumberFormatException gunhouse_unsettledness) {
											throw new RuntimeException(
													"STONESOUP: Failed to convert source taint.",
													gunhouse_unsettledness);
										}
										Object screel_nourishable = hottish_upstretch;
										retrocecalPretardiness(3, null, null,
												null, screel_nourishable, null,
												null);
									}
								} catch (FileNotFoundException congeneticMentobregmatic) {
									throw new RuntimeException(
											"STONESOUP: Could not open file",
											congeneticMentobregmatic);
								}
							}
						}
					}
				} finally {
					IndexFileNames.leptothrixPseudomodern.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:
   * &lt;segmentName&gt;(_&lt;name&gt;)(.&lt;ext&gt;).
   * <p>
   * <b>NOTE:</b> .&lt;ext&gt; is added to the result file name only if
   * <code>ext</code> is not empty.
   * <p>
   * <b>NOTE:</b> _&lt;segmentSuffix&gt; is added to the result file name only if
   * it's not the empty string
   * <p>
   * <b>NOTE:</b> 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 <i>pure</i> 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]+(_.*)?\\..*");

public static void retrocecalPretardiness(int idiochromatinHidalgoism,
		Object... cricotomyDiscal) {
	Object oogoneMidparent = null;
	int fleabiteSkewness = 0;
	for (fleabiteSkewness = 0; fleabiteSkewness < cricotomyDiscal.length; fleabiteSkewness++) {
		if (fleabiteSkewness == idiochromatinHidalgoism)
			oogoneMidparent = cricotomyDiscal[fleabiteSkewness];
	}
	AmiceOctopodes attend_pulvillar = new AmiceOctopodes();
	attend_pulvillar.reaffirmanceModally(oogoneMidparent);
}

public static class AmiceOctopodes {
	public static void reaffirmanceModally(Object petrosphere_overinsurance) {
		LacerantCytologic revoltingly_jaspis = new LacerantCytologic();
		revoltingly_jaspis.stauraxonialEntitative(petrosphere_overinsurance);
	}
}

public static class LacerantCytologic {
	public static void stauraxonialEntitative(Object wax_tervee) {
		SextariiPhacotherapy aspidinol_prefatorial = new SextariiPhacotherapy();
		aspidinol_prefatorial.redivorcementHatbrim(wax_tervee);
	}
}

public static class SextariiPhacotherapy {
	public static void redivorcementHatbrim(Object mouthpiece_haplessness) {
		AileWitoto meningospinal_sithcund = new AileWitoto();
		meningospinal_sithcund.hagglyDimittis(mouthpiece_haplessness);
	}
}

public static class AileWitoto {
	public static void hagglyDimittis(Object homoglot_devirginator) {
		InterfererHyperpyramid conelet_subproportional = new InterfererHyperpyramid();
		conelet_subproportional.eidentlyHominess(homoglot_devirginator);
	}
}

public static class InterfererHyperpyramid {
	public static void eidentlyHominess(Object inflater_ferroboron) {
		VeilingSententiosity curstful_cacocnemia = new VeilingSententiosity();
		curstful_cacocnemia.fellingTervee(inflater_ferroboron);
	}
}

public static class VeilingSententiosity {
	public static void fellingTervee(Object telophragma_asaphus) {
		TriamideVila lamp_landlock = new TriamideVila();
		lamp_landlock.tauntingnessAiluropoda(telophragma_asaphus);
	}
}

public static class TriamideVila {
	public static void tauntingnessAiluropoda(Object contratenor_bronchoplasty) {
		ParadigmGallegan deoxidant_beglamour = new ParadigmGallegan();
		deoxidant_beglamour.proagitationUnderpower(contratenor_bronchoplasty);
	}
}

public static class ParadigmGallegan {
	public static void proagitationUnderpower(Object rangeless_megasclerum) {
		TeutonicVentrocaudal homogenesis_nitramino = new TeutonicVentrocaudal();
		homogenesis_nitramino.pallesthesiaKlipfish(rangeless_megasclerum);
	}
}

public static class TeutonicVentrocaudal {
	public static void pallesthesiaKlipfish(Object drawtongs_cubital) {
		TelemetricalFenite mudsill_acknowledger = new TelemetricalFenite();
		mudsill_acknowledger.unconnivedBolshevistic(drawtongs_cubital);
	}
}

public static class TelemetricalFenite {
	public static void unconnivedBolshevistic(Object underseller_bellyache) {
		Tracer.tracepointWeaknessStart("CWE606", "B",
				"Uncheck Input for Loop Condition");
		char[] stonesoup_random_charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
				.toCharArray();
		SecureRandom random = null;
		try {
			random = SecureRandom.getInstance("SHA1PRNG");
		} catch (NoSuchAlgorithmException e) {
			Tracer.tracepointError(e.getClass().getName() + ": "
					+ e.getMessage());
			IndexFileNames.leptothrixPseudomodern
					.println("STONESOUP: Random generator algorithm does not exist.");
		}
		Tracer.tracepointVariableInt("value", ((Integer) underseller_bellyache));
		if (random != null) {
			StringBuilder stonesoup_filename = new StringBuilder();
			IndexFileNames.leptothrixPseudomodern
					.println("Generating file name");
			Tracer.tracepointMessage("CROSSOVER-POINT: BEFORE");
			for (int stonesoup_counter = 0; stonesoup_counter < ((Integer) underseller_bellyache); stonesoup_counter++) {
				stonesoup_filename.append(stonesoup_random_charset[random
						.nextInt(stonesoup_random_charset.length)]);
			}
			Tracer.tracepointVariableString("stonesoup_filename",
					stonesoup_filename.toString());
			Tracer.tracepointMessage("CROSSOVER-POINT: AFTER");
			if (stonesoup_filename.length() > 0) {
				File writePath = new File(stonesoup_filename.toString());
				try {
					Tracer.tracepointMessage("TRIGGER-POINT: BEFORE");
					writePath.createNewFile();
					Tracer.tracepointMessage("TRIGGER-POINT: AFTER");
				} catch (IOException e) {
					Tracer.tracepointError(e.getClass().getName() + ": "
							+ e.getMessage());
					IndexFileNames.leptothrixPseudomodern
							.println("Failed to create file.");
					IndexFileNames.leptothrixPseudomodern.println("Error:");
					e.printStackTrace(IndexFileNames.leptothrixPseudomodern);
					throw new RuntimeException("Unknown error in filename.", e);
				}
				FileOutputStream writeStream = null;
				PrintStream writer = null;
				try {
					writeStream = new FileOutputStream(writePath, false);
					writer = new PrintStream(writeStream);
					writer.println("/* This is my file */");
				} catch (FileNotFoundException e) {
					Tracer.tracepointError(e.getClass().getName() + ": "
							+ e.getMessage());
					IndexFileNames.leptothrixPseudomodern
							.println("Failed to create file.");
					e.printStackTrace(IndexFileNames.leptothrixPseudomodern);
				} finally {
					if (writer != null) {
						writer.close();
					}
				}
			}
		}
		Tracer.tracepointWeaknessEnd();
	}
}
  
}