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/*
* Copyright (C) 2007, 2008 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.
*/
#include "config.h"
#include "FileSystem.h"
#include "PlatformString.h"
#ifdef ANDROID_PLUGINS
#include <dirent.h>
#endif
#include <errno.h>
#include <fcntl.h>
#ifdef ANDROID_PLUGINS
#include <fnmatch.h>
#endif
#include <libgen.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <wtf/text/CString.h>
namespace WebCore {
bool fileExists(const String& path)
{
if (path.isNull())
return false;
CString fsRep = fileSystemRepresentation(path);
if (!fsRep.data() || fsRep.data()[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.data(), &fileInfo);
}
bool deleteFile(const String& path)
{
CString fsRep = fileSystemRepresentation(path);
if (!fsRep.data() || fsRep.data()[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.data());
}
PlatformFileHandle openFile(const String& path, FileOpenMode mode)
{
int platformFlag = 0;
if (mode == OpenForRead)
platformFlag |= O_RDONLY;
else if (mode == OpenForWrite)
platformFlag |= (O_WRONLY | O_CREAT | O_TRUNC);
return open(path.utf8().data(), platformFlag, 0666);
}
void closeFile(PlatformFileHandle& handle)
{
if (isHandleValid(handle)) {
close(handle);
handle = invalidPlatformFileHandle;
}
}
long long seekFile(PlatformFileHandle handle, long long offset, FileSeekOrigin origin)
{
int whence = SEEK_SET;
switch (origin) {
case SeekFromBeginning:
whence = SEEK_SET;
break;
case SeekFromCurrent:
whence = SEEK_CUR;
break;
case SeekFromEnd:
whence = SEEK_END;
break;
default:
ASSERT_NOT_REACHED();
}
return static_cast<long long>(lseek(handle, offset, whence));
}
bool truncateFile(PlatformFileHandle handle, long long offset)
{
// ftruncate returns 0 to indicate the success.
return !ftruncate(handle, offset);
}
int writeToFile(PlatformFileHandle handle, const char* data, int length)
{
do {
int bytesWritten = write(handle, data, static_cast<size_t>(length));
if (bytesWritten >= 0)
return bytesWritten;
} while (errno == EINTR);
return -1;
}
int readFromFile(PlatformFileHandle handle, char* data, int length)
{
do {
int bytesRead = read(handle, data, static_cast<size_t>(length));
if (bytesRead >= 0)
return bytesRead;
} while (errno == EINTR);
return -1;
}
bool deleteEmptyDirectory(const String& path)
{
CString fsRep = fileSystemRepresentation(path);
if (!fsRep.data() || fsRep.data()[0] == '\0')
return false;
// rmdir(...) returns 0 on successful deletion of the path and non-zero in any other case (including invalid permissions or non-existent file)
return !rmdir(fsRep.data());
}
bool getFileSize(const String& path, long long& result)
{
CString fsRep = fileSystemRepresentation(path);
if (!fsRep.data() || fsRep.data()[0] == '\0')
return false;
struct stat fileInfo;
if (stat(fsRep.data(), &fileInfo))
return false;
result = fileInfo.st_size;
return true;
}
bool getFileModificationTime(const String& path, time_t& result)
{
CString fsRep = fileSystemRepresentation(path);
if (!fsRep.data() || fsRep.data()[0] == '\0')
return false;
struct stat fileInfo;
if (stat(fsRep.data(), &fileInfo))
return false;
result = fileInfo.st_mtime;
return true;
}
String pathByAppendingComponent(const String& path, const String& component)
{
if (path.endsWith("/"))
return path + component;
else
return path + "/" + component;
}
bool makeAllDirectories(const String& path)
{
CString fullPath = fileSystemRepresentation(path);
if (!access(fullPath.data(), F_OK))
return true;
char* p = fullPath.mutableData() + 1;
int length = fullPath.length();
if(p[length - 1] == '/')
p[length - 1] = '\0';
for (; *p; ++p)
if (*p == '/') {
*p = '\0';
if (access(fullPath.data(), F_OK))
if (mkdir(fullPath.data(), S_IRWXU))
return false;
*p = '/';
}
if (access(fullPath.data(), F_OK))
if (mkdir(fullPath.data(), S_IRWXU))
return false;
return true;
}
String pathGetFileName(const String& path)
{
return path.substring(path.reverseFind('/') + 1);
}
String directoryName(const String& path)
{
CString fsRep = fileSystemRepresentation(path);
if (!fsRep.data() || fsRep.data()[0] == '\0')
return String();
return dirname(fsRep.mutableData());
}
// OK to not implement listDirectory at the moment, because it's only used for plug-ins, and
// all platforms that use the shared plug-in implementation have implementations. We'd need
// to implement it if we wanted to use PluginDatabase.cpp on the Mac. Better to not implement
// at all and get a link error in case this arises, rather than having a stub here, because
// with a stub you learn about the problem at runtime instead of link time.
} // namespace WebCore
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