From 4088b51a273ba11341820026cd0206dc422eeef1 Mon Sep 17 00:00:00 2001
From: Markus Schorn <markus.schorn@windriver.com>
Date: Tue, 22 Jun 2010 11:40:39 +0000
Subject: [PATCH] Bug 312666: Default filesystem on Mac is case insensitive.

---
 .../internal/core/pdom/indexer/FileExistsCache.java  | 12 +++++++++---
 .../pdom/indexer/ProjectIndexerInputAdapter.java     | 11 ++++++++++-
 2 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/FileExistsCache.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/FileExistsCache.java
index 0dca3387f23..b47af49a936 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/FileExistsCache.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/FileExistsCache.java
@@ -38,8 +38,14 @@ public final class FileExistsCache {
 		public BitSet fIsFile;
 	}
 	private Reference<Map<String,Content>> fCache= null;
-		
+	private final boolean fCaseInSensitive;
+
 	public FileExistsCache() {
+		this(CASE_INSENSITIVE);
+	}
+
+	public FileExistsCache(boolean caseInsensitive) {
+		fCaseInSensitive= caseInsensitive;
 		fCache= new SoftReference<Map<String,Content>>(new HashMap<String, Content>());	// before running out of memory the entire map will be thrown away.
 	}
 	
@@ -54,7 +60,7 @@ public final class FileExistsCache {
 			return false;
 		
 		String name= file.getName();
-		if (CASE_INSENSITIVE)
+		if (fCaseInSensitive)
 			name= name.toUpperCase();
 		
 		Content avail= getExistsCache().get(parent); 
@@ -64,7 +70,7 @@ public final class FileExistsCache {
 				avail= EMPTY_STRING_ARRAY;
 			}
 			else {
-				if (CASE_INSENSITIVE) {
+				if (fCaseInSensitive) {
 					for (int i = 0; i < files.length; i++) {
 						files[i]= files[i].toUpperCase();
 					}
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/ProjectIndexerInputAdapter.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/ProjectIndexerInputAdapter.java
index 7d163a34405..f1f11568987 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/ProjectIndexerInputAdapter.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/indexer/ProjectIndexerInputAdapter.java
@@ -35,6 +35,7 @@ import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.Path;
+import org.eclipse.core.runtime.Platform;
 import org.eclipse.core.runtime.content.IContentType;
 
 /**
@@ -42,7 +43,9 @@ import org.eclipse.core.runtime.content.IContentType;
  * @since 5.0
  */
 public class ProjectIndexerInputAdapter extends IndexerInputAdapter {
+	private static final boolean CASE_INSENSITIVE_FILE_SYSTEM = new File("a").equals(new File("A")); //$NON-NLS-1$//$NON-NLS-2$
 	private static final AbstractLanguage[] NO_LANGUAGE = new AbstractLanguage[0];
+
 	private final ICProject fCProject;
 	private final HashMap<String, IIndexFileLocation> fIflCache;
 	private final FileExistsCache fExistsCache;
@@ -59,7 +62,7 @@ public class ProjectIndexerInputAdapter extends IndexerInputAdapter {
 		fProjectPrefix= cproject.getProject().getFullPath().toString() + IPath.SEPARATOR;
 		if (useCache) {
 			fIflCache= new HashMap<String, IIndexFileLocation>();
-			fExistsCache= new FileExistsCache();
+			fExistsCache= new FileExistsCache(isCaseInsensitiveFileSystem());
 		} else {
 			fIflCache= null;
 			fExistsCache= null;
@@ -74,6 +77,12 @@ public class ProjectIndexerInputAdapter extends IndexerInputAdapter {
 		}
 	}
 
+	private boolean isCaseInsensitiveFileSystem() {
+		if (Platform.OS_MACOSX.equals(Platform.getOS()))
+			return true;
+		return CASE_INSENSITIVE_FILE_SYSTEM; 
+	}
+
 	@Override
 	public IIndexFileLocation resolveASTPath(String astPath) {
 		if (fIflCache == null) {