/usr/include/GNUstep/DBKit/DBKBTree.h is in gworkspace.app 0.9.4-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* Copyright (C) 2005-2012 Free Software Foundation, Inc.
*
* Author: Enrico Sersale <enrico@imago.ro>
* Date: June 2005
*
* This file is part of the GNUstep GWorkspace application
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111 USA.
*/
#ifndef DBK_BTREE_H
#define DBK_BTREE_H
#import <Foundation/Foundation.h>
@class DBKBTreeNode;
@class DBKFreeNodesPage;
@class DBKFixLenRecordsFile;
extern NSRecursiveLock *dbkbtree_lock;
@interface DBKBTree: NSObject
{
NSMutableData *headData;
DBKBTreeNode *root;
NSNumber *rootOffset;
NSMutableSet *unsavedNodes;
DBKFreeNodesPage *freeNodesPage;
unsigned long fnpageOffset;
unsigned order;
unsigned minkeys;
unsigned maxkeys;
DBKFixLenRecordsFile *file;
unsigned long nodesize;
BOOL begin;
unsigned ulen;
unsigned llen;
id delegate;
}
- (id)initWithPath:(NSString *)path
order:(int)ord
delegate:(id)deleg;
- (void)begin;
- (void)end;
- (void)readHeader;
- (void)writeHeader;
- (void)createRootNode;
- (void)setRoot:(DBKBTreeNode *)newroot;
- (DBKBTreeNode *)root;
- (DBKBTreeNode *)insertKey:(id)key;
- (DBKBTreeNode *)insertKey:(id)key
inNode:(DBKBTreeNode *)node;
- (DBKBTreeNode *)nodeOfKey:(id)key
getIndex:(NSUInteger *)index;
- (DBKBTreeNode *)nodeOfKey:(id)key
getIndex:(NSUInteger *)index
didExist:(BOOL *)exists;
- (DBKBTreeNode *)nodeOfKey:(id)key;
- (NSArray *)keysGreaterThenKey:(id)akey
andLesserThenKey:(id)bkey;
- (BOOL)replaceKey:(id)key
withKey:(id)newkey;
- (BOOL)deleteKey:(id)key;
- (BOOL)deleteKey:(id)key
atIndex:(NSUInteger)index
ofNode:(DBKBTreeNode *)node;
- (NSNumber *)offsetForNewNode;
- (unsigned long)offsetForFreeNodesPage;
- (void)nodeWillFreeOffset:(NSNumber *)offset;
- (void)createFreeNodesPage;
- (NSArray *)keysFromData:(NSData *)data
withLength:(unsigned *)dlen;
- (NSData *)dataFromKeys:(NSArray *)keys;
- (NSComparisonResult)compareNodeKey:(id)akey
withKey:(id)bkey;
- (NSData *)dataForNode:(DBKBTreeNode *)node;
- (void)addUnsavedNode:(DBKBTreeNode *)node;
- (void)saveNodes;
- (void)synchronize;
- (void)saveNode:(DBKBTreeNode *)node;
- (unsigned)order;
- (void)checkBegin;
@end
@protocol DBKBTreeDelegate
- (unsigned long)nodesize;
- (NSArray *)keysFromData:(NSData *)data
withLength:(unsigned *)dlen;
- (NSData *)dataFromKeys:(NSArray *)keys;
- (NSComparisonResult)compareNodeKey:(id)akey
withKey:(id)bkey;
@end
#endif // DBK_BTREE_H
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