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/*****************************************************************************
* *
* PrimeSense PSCommon Library *
* Copyright (C) 2012 PrimeSense Ltd. *
* *
* This file is part of PSCommon. *
* *
* Licensed under the Apache License, Version 2.0 (the "License"); *
* you may not use this file except in compliance with the License. *
* You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, software *
* distributed under the License is distributed on an "AS IS" BASIS, *
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
* See the License for the specific language governing permissions and *
* limitations under the License. *
* *
*****************************************************************************/
#include "XnLib.h"
XN_C_API XnStatus xnOSLoadFile(const XnChar* cpFileName, void* pBuffer, const XnUInt32 nBufferSize)
{
// Local function variables
XN_FILE_HANDLE FileHandle;
XnUInt32 nReadBytes = nBufferSize;
XnStatus nRetVal = XN_STATUS_OK;
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_INPUT_PTR(cpFileName);
XN_VALIDATE_OUTPUT_PTR(pBuffer);
if (nBufferSize == 0)
{
return XN_STATUS_NULL_OUTPUT_PTR;
}
nRetVal = xnOSOpenFile(cpFileName, XN_OS_FILE_READ, &FileHandle);
XN_IS_STATUS_OK(nRetVal);
nRetVal = xnOSReadFile(FileHandle, pBuffer, &nReadBytes);
if ((nRetVal != XN_STATUS_OK) || (nReadBytes != nBufferSize))
{
xnOSCloseFile(&FileHandle);
return (XN_STATUS_OS_FILE_READ_FAILED);
}
nRetVal = xnOSCloseFile(&FileHandle);
XN_IS_STATUS_OK(nRetVal);
// All is good...
return (XN_STATUS_OK);
}
XN_C_API XnStatus xnOSSaveFile(const XnChar* cpFileName, const void* pBuffer, const XnUInt32 nBufferSize)
{
// Local function variables
XN_FILE_HANDLE FileHandle;
XnStatus nRetVal = XN_STATUS_OK;
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_INPUT_PTR(cpFileName);
XN_VALIDATE_INPUT_PTR(pBuffer);
nRetVal = xnOSOpenFile(cpFileName, XN_OS_FILE_WRITE | XN_OS_FILE_TRUNCATE, &FileHandle);
XN_IS_STATUS_OK(nRetVal);
nRetVal = xnOSWriteFile(FileHandle, pBuffer, nBufferSize);
if (nRetVal != XN_STATUS_OK)
{
xnOSCloseFile(&FileHandle);
return (XN_STATUS_OS_FILE_WRITE_FAILED);
}
nRetVal = xnOSCloseFile(&FileHandle);
XN_IS_STATUS_OK(nRetVal);
// All is good...
return (XN_STATUS_OK);
}
XN_C_API XnStatus xnOSAppendFile(const XnChar* cpFileName, const void* pBuffer, const XnUInt32 nBufferSize)
{
// Local function variables
XN_FILE_HANDLE FileHandle;
XnStatus nRetVal = XN_STATUS_OK;
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_INPUT_PTR(cpFileName);
XN_VALIDATE_INPUT_PTR(pBuffer);
nRetVal = xnOSOpenFile(cpFileName, XN_OS_FILE_WRITE | XN_OS_FILE_APPEND, &FileHandle);
XN_IS_STATUS_OK(nRetVal);
nRetVal = xnOSWriteFile(FileHandle, pBuffer, nBufferSize);
if (nRetVal != XN_STATUS_OK)
{
xnOSCloseFile(&FileHandle);
return (XN_STATUS_OS_FILE_WRITE_FAILED);
}
nRetVal = xnOSCloseFile(&FileHandle);
XN_IS_STATUS_OK(nRetVal);
// All is good...
return (XN_STATUS_OK);
}
XN_C_API XnStatus xnOSStripDirSep(XnChar* strDirName)
{
XnUInt32 len = xnOSStrLen(strDirName);
if (len > 0 && xnOSIsDirSep(strDirName[len-1]))
{
strDirName[len-1] = '\0';
}
return XN_STATUS_OK;
}
XN_C_API XnBool xnOSIsDirSep(XnChar c)
{
return (c != '\0') && (strchr(XN_FILE_DIR_SEPS, c) != NULL);
}
XN_C_API XnStatus XN_C_DECL xnOSAppendFilePath(XnChar* strDestPath, const XnChar* strPathComponentToAppend, const XnUInt32 nBufferSize)
{
XnStatus rc;
if (xnOSIsAbsoluteFilePath(strPathComponentToAppend))
{
// If the path to append is absolute, use it entirely.
XN_VALIDATE_STR_COPY(strDestPath, strPathComponentToAppend, nBufferSize, rc);
}
else
{
// If the path to append is relative, append it after applyling the separator as needed.
xnOSStripDirSep(strDestPath);
XN_VALIDATE_STR_APPEND(strDestPath, XN_FILE_DIR_SEP, nBufferSize, rc);
XN_VALIDATE_STR_APPEND(strDestPath, strPathComponentToAppend, nBufferSize, rc);
}
return XN_STATUS_OK;
}
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