diff options
Diffstat (limited to 'core/org.eclipse.cdt.core/index/org/eclipse/cdt/internal/core/index/impl/BlocksIndexInput.java')
| -rw-r--r-- | core/org.eclipse.cdt.core/index/org/eclipse/cdt/internal/core/index/impl/BlocksIndexInput.java | 474 |
1 files changed, 0 insertions, 474 deletions
diff --git a/core/org.eclipse.cdt.core/index/org/eclipse/cdt/internal/core/index/impl/BlocksIndexInput.java b/core/org.eclipse.cdt.core/index/org/eclipse/cdt/internal/core/index/impl/BlocksIndexInput.java deleted file mode 100644 index 7cebcc52297..00000000000 --- a/core/org.eclipse.cdt.core/index/org/eclipse/cdt/internal/core/index/impl/BlocksIndexInput.java +++ /dev/null @@ -1,474 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2003 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Common Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/cpl-v10.html - * - * Contributors: - * IBM Corporation - initial API and implementation - *******************************************************************************/ -package org.eclipse.cdt.internal.core.index.impl; - -import java.io.File; -import java.io.IOException; -import java.io.RandomAccessFile; -import java.util.ArrayList; - -import org.eclipse.cdt.internal.core.CharOperation; -import org.eclipse.cdt.internal.core.Util; -import org.eclipse.cdt.internal.core.index.IDocument; -import org.eclipse.cdt.internal.core.index.IEntryResult; -import org.eclipse.cdt.internal.core.index.IQueryResult; -import org.eclipse.cdt.internal.core.util.LRUCache; - -/** - * This input is used for reading indexes saved using a BlocksIndexOutput. - */ -public class BlocksIndexInput extends IndexInput { - public static final int CACHE_SIZE= 16; // Cache 16 blocks of 8K each, for a cache size of 128K - protected FileListBlock currentFileListBlock; - protected int currentFileListBlockNum; - protected int currentIndexBlockNum; - protected IndexBlock currentIndexBlock; - protected IndexBlock currentIncludeIndexBlock; - private RandomAccessFile raf; - protected File indexFile; - protected LRUCache blockCache; - protected boolean opened= false; - protected IndexSummary summary; - - public BlocksIndexInput(File inputFile) { - this.indexFile= inputFile; - blockCache= new LRUCache(CACHE_SIZE); - } - /** - * @see IndexInput#clearCache() - */ - public void clearCache() { - blockCache= new LRUCache(CACHE_SIZE); - } - /** - * @see IndexInput#close() - */ - public void close() throws IOException { - if (opened) { - summary= null; - opened= false; - if (raf != null) - raf.close(); - } - } - /** - * @see IndexInput#getCurrentFile() - */ - public IndexedFile getCurrentFile() throws IOException { - if (!hasMoreFiles()) - return null; - IndexedFile file= null; - if ((file= currentFileListBlock.getFile(filePosition)) == null) { - currentFileListBlockNum= summary.getBlockNumForFileNum(filePosition); - currentFileListBlock= getFileListBlock(currentFileListBlockNum); - file= currentFileListBlock.getFile(filePosition); - } - return file; - } - /** - * Returns the entry corresponding to the given word. - */ - protected WordEntry getEntry(char[] word) throws IOException { - int blockNum= summary.getBlockNumForWord(word); - if (blockNum == -1) return null; - IndexBlock block= getIndexBlock(blockNum); - return block.findExactEntry(word); - } - /** - * Returns the FileListBlock with the given number. - */ - protected FileListBlock getFileListBlock(int blockNum) throws IOException { - Integer key= new Integer(blockNum); - Block block= (Block) blockCache.get(key); - if (block != null && block instanceof FileListBlock) - return (FileListBlock) block; - FileListBlock fileListBlock= new FileListBlock(IIndexConstants.BLOCK_SIZE); - fileListBlock.read(raf, blockNum); - blockCache.put(key, fileListBlock); - return fileListBlock; - } - /** - * Returns the IndexBlock (containing words) with the given number. - */ - protected IndexBlock getIndexBlock(int blockNum) throws IOException { - Integer key= new Integer(blockNum); - Block block= (Block) blockCache.get(key); - if (block != null && block instanceof IndexBlock) - return (IndexBlock) block; - IndexBlock indexBlock= new GammaCompressedIndexBlock(IIndexConstants.BLOCK_SIZE); - indexBlock.read(raf, blockNum); - blockCache.put(key, indexBlock); - return indexBlock; - } - /** - * @see IndexInput#getIndexedFile(int) - */ - public IndexedFile getIndexedFile(int fileNum) throws IOException { - int blockNum= summary.getBlockNumForFileNum(fileNum); - if (blockNum == -1) - return null; - FileListBlock block= getFileListBlock(blockNum); - return block.getFile(fileNum); - } - /** - * @see IndexInput#getIndexedFile(IDocument) - */ - public IndexedFile getIndexedFile(IDocument document) throws java.io.IOException { - setFirstFile(); - String name= document.getName(); - while (hasMoreFiles()) { - IndexedFile file= getCurrentFile(); - String path= file.getPath(); - if (path.equals(name)) - return file; - moveToNextFile(); - } - return null; - } - /** - * Returns the list of numbers of files containing the given word. - */ - - protected int[] getMatchingFileNumbers(char[] word) throws IOException { - int blockNum= summary.getBlockNumForWord(word); - if (blockNum == -1) - return new int[0]; - IndexBlock block= getIndexBlock(blockNum); - WordEntry entry= block.findExactEntry(word); - return entry == null ? new int[0] : entry.getRefs(); - } - /** - * @see IndexInput#getNumFiles() - */ - public int getNumFiles() { - return summary.getNumFiles(); - } - /** - * @see IndexInput#getNumWords() - */ - public int getNumWords() { - return summary.getNumWords(); - } - /** - * @see IndexInput#getNumIncludes() - */ - public int getNumIncludes() { - return summary.getNumIncludes(); - } - /** - * @see IndexInput#getSource() - */ - public Object getSource() { - return indexFile; - } - /** - * Initialises the blocksIndexInput - */ - protected void init() throws IOException { - clearCache(); - setFirstFile(); - setFirstWord(); - setFirstInclude(); - } - /** - * @see IndexInput#moveToNextFile() - */ - public void moveToNextFile() throws IOException { - filePosition++; - } - /** - * @see IndexInput#moveToNextWordEntry() - */ - public void moveToNextWordEntry() throws IOException { - wordPosition++; - if (!hasMoreWords()) { - return; - } - //if end of the current block, we load the next one. - boolean endOfBlock= !currentIndexBlock.nextEntry(currentWordEntry); - if (endOfBlock) { - currentIndexBlock= getIndexBlock(++currentIndexBlockNum); - currentIndexBlock.nextEntry(currentWordEntry); - } - } - /** - * @see IndexInput#open() - */ - - public void open() throws IOException { - if (!opened) { - raf= new SafeRandomAccessFile(indexFile, "r"); //$NON-NLS-1$ - String sig= raf.readUTF(); - if (!sig.equals(IIndexConstants.SIGNATURE)) - throw new IOException(Util.bind("exception.wrongFormat")); //$NON-NLS-1$ - int summaryBlockNum= raf.readInt(); - raf.seek(summaryBlockNum * (long) IIndexConstants.BLOCK_SIZE); - summary= new IndexSummary(); - summary.read(raf); - init(); - opened= true; - } - } - /** - * @see IndexInput#query(String) - */ - public IQueryResult[] query(String word) throws IOException { - open(); - int[] fileNums= getMatchingFileNumbers(word.toCharArray()); - int size= fileNums.length; - IQueryResult[] files= new IQueryResult[size]; - for (int i= 0; i < size; ++i) { - files[i]= getIndexedFile(fileNums[i]); - } - return files; - } - /** - * If no prefix is provided in the pattern, then this operation will have to walk - * all the entries of the whole index. - */ - public IEntryResult[] queryEntriesMatching(char[] pattern/*, boolean isCaseSensitive*/) throws IOException { - open(); - - if (pattern == null || pattern.length == 0) return null; - int[] blockNums = null; - int firstStar = CharOperation.indexOf('*', pattern); - switch (firstStar){ - case -1 : - WordEntry entry = getEntry(pattern); - if (entry == null) return null; - return new IEntryResult[]{ new EntryResult(entry.getWord(), entry.getRefs()) }; - case 0 : - blockNums = summary.getAllBlockNums(); - break; - default : - char[] prefix = CharOperation.subarray(pattern, 0, firstStar); - blockNums = summary.getBlockNumsForPrefix(prefix); - } - if (blockNums == null || blockNums.length == 0) return null; - - IEntryResult[] entries = new IEntryResult[5]; - int count = 0; - for (int i = 0, max = blockNums.length; i < max; i++) { - IndexBlock block = getIndexBlock(blockNums[i]); - block.reset(); - boolean found = false; - WordEntry entry = new WordEntry(); - while (block.nextEntry(entry)) { - if (CharOperation.match(entry.getWord(), pattern, true)) { - if (count == entries.length){ - System.arraycopy(entries, 0, entries = new IEntryResult[count*2], 0, count); - } - entries[count++] = new EntryResult(entry.getWord(), entry.getRefs()); - found = true; - } else { - if (found) break; - } - } - } - if (count != entries.length){ - System.arraycopy(entries, 0, entries = new IEntryResult[count], 0, count); - } - return entries; - } - public IEntryResult[] queryEntriesPrefixedBy(char[] prefix) throws IOException { - open(); - - int blockLoc = summary.getFirstBlockLocationForPrefix(prefix); - if (blockLoc < 0) return null; - - IEntryResult[] entries = new IEntryResult[5]; - int count = 0; - while(blockLoc >= 0){ - IndexBlock block = getIndexBlock(summary.getBlockNum(blockLoc)); - block.reset(); - boolean found = false; - WordEntry entry = new WordEntry(); - while (block.nextEntry(entry)) { - if (CharOperation.prefixEquals(prefix, entry.getWord())) { - if (count == entries.length){ - System.arraycopy(entries, 0, entries = new IEntryResult[count*2], 0, count); - } - entries[count++] = new EntryResult(entry.getWord(), entry.getRefs()); - found = true; - } else { - if (found) break; - } - } - /* consider next block ? */ - blockLoc = summary.getNextBlockLocationForPrefix(prefix, blockLoc); - } - if (count == 0) return null; - if (count != entries.length){ - System.arraycopy(entries, 0, entries = new IEntryResult[count], 0, count); - } - return entries; - } - public IQueryResult[] queryFilesReferringToPrefix(char[] prefix) throws IOException { - open(); - - int blockLoc = summary.getFirstBlockLocationForPrefix(prefix); - if (blockLoc < 0) return null; - - // each filename must be returned already once - org.eclipse.cdt.internal.core.search.HashtableOfInt fileMatches = new org.eclipse.cdt.internal.core.search.HashtableOfInt(20); - int count = 0; - while(blockLoc >= 0){ - IndexBlock block = getIndexBlock(summary.getBlockNum(blockLoc)); - block.reset(); - boolean found = false; - WordEntry entry = new WordEntry(); - while (block.nextEntry(entry)) { - if (CharOperation.prefixEquals(prefix, entry.getWord()/*, isCaseSensitive*/)) { - int [] refs = entry.getRefs(); - for (int i = 0, max = refs.length; i < max; i++){ - int ref = refs[i]; - if (!fileMatches.containsKey(ref)){ - count++; - fileMatches.put(ref, getIndexedFile(ref)); - } - } - found = true; - } else { - if (found) break; - } - } - /* consider next block ? */ - blockLoc = summary.getNextBlockLocationForPrefix(prefix, blockLoc); - } - /* extract indexed files */ - IQueryResult[] files = new IQueryResult[count]; - Object[] indexedFiles = fileMatches.valueTable; - for (int i = 0, index = 0, max = indexedFiles.length; i < max; i++){ - IndexedFile indexedFile = (IndexedFile) indexedFiles[i]; - if (indexedFile != null){ - files[index++] = indexedFile; - } - } - return files; - } - /** - * @see IndexInput#queryInDocumentNames(String) - */ - public IQueryResult[] queryInDocumentNames(String word) throws IOException { - open(); - ArrayList matches= new ArrayList(); - setFirstFile(); - while (hasMoreFiles()) { - IndexedFile file= getCurrentFile(); - if (file.getPath().indexOf(word) != -1) - matches.add(file); - moveToNextFile(); - } - IQueryResult[] match= new IQueryResult[matches.size()]; - matches.toArray(match); - return match; - } - /** - * @see IndexInput#setFirstFile() - */ - - protected void setFirstFile() throws IOException { - filePosition= 1; - if (getNumFiles() > 0) { - currentFileListBlockNum= summary.getBlockNumForFileNum(1); - currentFileListBlock= getFileListBlock(currentFileListBlockNum); - } - } - /** - * @see IndexInput#setFirstWord() - */ - - protected void setFirstWord() throws IOException { - wordPosition= 1; - if (getNumWords() > 0) { - currentIndexBlockNum= summary.getFirstWordBlockNum(); - currentIndexBlock= getIndexBlock(currentIndexBlockNum); - currentWordEntry= new WordEntry(); - currentIndexBlock.reset(); - currentIndexBlock.nextEntry(currentWordEntry); - } - } - - /* (non-Javadoc) - * @see org.eclipse.cdt.internal.core.index.impl.IndexInput#moveToNextIncludeEntry() - */ - public void moveToNextIncludeEntry() throws IOException { - includePosition++; - if (!hasMoreIncludes()) { - return; - } - //if end of the current block, we load the next one. - boolean endOfBlock= !currentIncludeIndexBlock.nextEntry(currentIncludeEntry); - if (endOfBlock) { - currentIncludeIndexBlock= getIndexBlock(++currentIndexBlockNum); - currentIncludeIndexBlock.nextEntry(currentWordEntry); - } - } - /* (non-Javadoc) - * @see org.eclipse.cdt.internal.core.index.impl.IndexInput#setFirstInclude() - */ - protected void setFirstInclude() throws IOException { - includePosition= 1; - if (getNumIncludes() > 0) { - currentIndexBlockNum= summary.getFirstIncludeBlockNum(); - currentIncludeIndexBlock= getIndexBlock(currentIndexBlockNum); - currentIncludeEntry= new IncludeEntry(0); - currentIncludeIndexBlock.reset(); - currentIncludeIndexBlock.nextEntry(currentIncludeEntry); - } - } - /* (non-Javadoc) - * @see org.eclipse.cdt.internal.core.index.impl.IndexInput#queryIncludeEntries() - */ - public IncludeEntry[] queryIncludeEntries() { - // TODO Auto-generated method stub - return null; - } - /* (non-Javadoc) - * @see org.eclipse.cdt.internal.core.index.impl.IndexInput#queryIncludeEntries(int) - */ - public IncludeEntry[] queryIncludeEntries(int fileNum) throws IOException { - open(); - - if (fileNum < 0) return null; - int[] blockNums = null; - blockNums = summary.getBlockNumsForIncludes(); - - if (blockNums == null || blockNums.length == 0) return null; - - IncludeEntry[] entries = new IncludeEntry[5]; - int count = 0; - for (int i = 0, max = blockNums.length; i < max; i++) { - IndexBlock block = getIndexBlock(blockNums[i]); - block.reset(); - boolean found = false; - IncludeEntry entry = new IncludeEntry(0); - - while (block.nextEntry(entry)) { - if (count == entries.length){ - System.arraycopy(entries, 0, entries = new IncludeEntry[count*2], 0, count); - } - for (int j=0; j<entry.getNumRefs(); j++){ - if (entry.getRef(j) == fileNum){ - entries[count++] = new IncludeEntry(entry.getFile(),entry.getID()); - break; - } - } - } - } - if (count == 0) return null; - if (count != entries.length){ - System.arraycopy(entries, 0, entries = new IncludeEntry[count], 0, count); - } - return entries; - } - -} |