WebCore/platform/mac/FileSystemMac.mm

/*
 * Copyright (C) 2007 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer. 
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution. 
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#import "config.h"
#import "FileSystem.h"

#import "PlatformString.h"

namespace WebCore {

bool fileExists(const String& path) 
{
    const char* fsRep = [(NSString *)path fileSystemRepresentation];
        
    if (!fsRep || fsRep[0] == '\0')
        return false;
        
    struct stat fileInfo;

    // stat(...) returns 0 on successful stat'ing of the file, and non-zero in any case where the file doesn't exist or cannot be accessed
    return !stat(fsRep, &fileInfo);
}

bool deleteFile(const String& path) 
{
    const char* fsRep = [(NSString *)path fileSystemRepresentation];
        
    if (!fsRep || fsRep[0] == '\0')
        return false;
        
    // unlink(...) returns 0 on successful deletion of the path and non-zero in any other case (including invalid permissions or non-existent file)
    return !unlink(fsRep);
}

bool fileSize(const String& path, long long& result)
{
    const char* fsRep = [(NSString *)path fileSystemRepresentation];
    
    if (!fsRep || fsRep[0] == '\0')
        return false;
    
    struct stat fileInfo;
    
    if (!stat(fsRep, &fileInfo))
        return false;
    
    result = fileInfo.st_size;
    return true;
}

} //namespace WebCore