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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. *
* *
*****************************************************************************/
//---------------------------------------------------------------------------
// Includes
//---------------------------------------------------------------------------
#include <XnOS.h>
#include <string.h>
#define XN_READ_IXN_BUFFER_SIZE 10*1024
#define XN_IS_SPACE(p) (*p == ' ' || *p == '\t')
#define XN_IS_NEWLINE(p) (*p == '\r' || *p == '\n')
#define XN_SKIP_LINE(p) \
/* first read till end of line. */ \
while (*p && *p != '\n' && *p != '\r') \
p++; \
/* now skip end of line tokens. */ \
while (*p && (*p == '\n' || *p == '\r')) \
p++;
#define XN_READ_TILL(p, endCond, dest, destSize) \
{ \
destSize = 0; \
while (*p && !(endCond)) \
{ \
if (destSize + 1 > XN_INI_MAX_LEN) \
break; \
\
dest[destSize++] = *p; \
p++; \
} \
dest[destSize] = '\0'; \
}
//---------------------------------------------------------------------------
// Code
//---------------------------------------------------------------------------
static XnStatus FindEntry(const XnChar* cpINIFile, const XnChar* cpSection, const XnChar* cpKey, XnChar* cpDest)
{
XnStatus nRetVal = XN_STATUS_OK;
// get file size
XnUInt64 nFileSize;
nRetVal = xnOSGetFileSize64(cpINIFile, &nFileSize);
XN_IS_STATUS_OK(nRetVal);
// read entire file to memory
XnChar* csFileData = (XnChar*)xnOSMalloc(sizeof(XnChar)*nFileSize + 1);
XN_VALIDATE_ALLOC_PTR(csFileData);
nRetVal = xnOSLoadFile(cpINIFile, csFileData, nFileSize);
if (nRetVal != XN_STATUS_OK)
{
xnOSFree(csFileData);
return nRetVal;
}
// place NULL at the end
csFileData[nFileSize] = '\0';
// now parse file
XnChar* pCurPos = csFileData;
XnBool bIsInRequestedSection = FALSE;
XnChar csTempString[XN_INI_MAX_LEN];
XnUInt32 nTempStringLength = 0;
while (TRUE)
{
// ignore spaces
while (*pCurPos && XN_IS_SPACE(pCurPos))
{
pCurPos++;
}
// check we haven't reached the end
if (!*pCurPos)
{
break;
}
if (*pCurPos == ';' || *pCurPos == '#') // comment
{
XN_SKIP_LINE(pCurPos);
continue;
}
if (*pCurPos == '[') // start of section
{
pCurPos++;
XN_READ_TILL(pCurPos, *pCurPos == ']' || XN_IS_NEWLINE(pCurPos), csTempString, nTempStringLength);
if (*pCurPos == ']') // valid section name
{
if (bIsInRequestedSection)
{
// we're leaving the requested section, and string wasn't found
xnOSFree(csFileData);
return XN_STATUS_OS_INI_READ_FAILED;
}
if (strcmp(csTempString, cpSection) == 0)
{
bIsInRequestedSection = TRUE;
}
}
// in any case, move to the next line
XN_SKIP_LINE(pCurPos);
continue;
} // section
// if we're not in the right section, we don't really care what's written in this line. Just skip it.
if (!bIsInRequestedSection)
{
XN_SKIP_LINE(pCurPos);
continue;
}
// regular line. check if this is a key (look for the '=' sign)
XN_READ_TILL(pCurPos, *pCurPos == '=' || XN_IS_NEWLINE(pCurPos), csTempString, nTempStringLength);
if (*pCurPos == '=') // we found a key
{
if (strcmp(csTempString, cpKey) == 0)
{
// we found our key. The value is the rest of the line
pCurPos++;
XN_READ_TILL(pCurPos, XN_IS_NEWLINE(pCurPos), cpDest, nTempStringLength);
xnOSFree(csFileData);
return XN_STATUS_OK;
}
}
// if we got here, skip to the next line
XN_SKIP_LINE(pCurPos);
} // while loop
xnOSFree(csFileData);
return (XN_STATUS_OS_INI_READ_FAILED);
}
XN_C_API XnStatus xnOSReadStringFromINI(const XnChar* cpINIFile, const XnChar* cpSection, const XnChar* cpKey, XnChar* cpDest, const XnUInt32 nDestLength)
{
XnStatus nRetVal = XN_STATUS_OK;
XnBool bINIFileExists = FALSE;
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_INPUT_PTR(cpSection);
XN_VALIDATE_INPUT_PTR(cpKey);
XN_VALIDATE_INPUT_PTR(cpINIFile);
XN_VALIDATE_OUTPUT_PTR(cpDest);
// Make sure the INI file exists
XN_VALIDATE_FILE_EXISTS_RET(cpINIFile, nRetVal, bINIFileExists, XN_STATUS_OS_INI_FILE_NOT_FOUND);
// find value
XnChar cpValueString[XN_INI_MAX_LEN];
nRetVal = FindEntry(cpINIFile, cpSection, cpKey, cpValueString);
XN_IS_STATUS_OK(nRetVal);
nRetVal = xnOSStrCopy(cpDest, cpValueString, nDestLength);
XN_IS_STATUS_OK(nRetVal);
return XN_STATUS_OK;
}
XN_C_API XnStatus xnOSReadFloatFromINI(const XnChar* cpINIFile, const XnChar* cpSection, const XnChar* cpKey, XnFloat* fDest)
{
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_OUTPUT_PTR(fDest);
XnDouble dTemp;
XnStatus nRetVal = xnOSReadDoubleFromINI(cpINIFile, cpSection, cpKey, &dTemp);
XN_IS_STATUS_OK(nRetVal);
*fDest = (XnFloat)dTemp;
return XN_STATUS_OK;
}
XN_C_API XnStatus xnOSReadDoubleFromINI(const XnChar* cpINIFile, const XnChar* cpSection, const XnChar* cpKey, XnDouble* fDest)
{
XnStatus nRetVal = XN_STATUS_OK;
XnBool bINIFileExists = FALSE;
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_INPUT_PTR(cpSection);
XN_VALIDATE_INPUT_PTR(cpKey);
XN_VALIDATE_INPUT_PTR(cpINIFile);
XN_VALIDATE_OUTPUT_PTR(fDest);
// Make sure the INI file exists
XN_VALIDATE_FILE_EXISTS_RET(cpINIFile, nRetVal, bINIFileExists, XN_STATUS_OS_INI_FILE_NOT_FOUND);
// find value
XnChar cpValueString[XN_INI_MAX_LEN];
nRetVal = FindEntry(cpINIFile, cpSection, cpKey, cpValueString);
XN_IS_STATUS_OK(nRetVal);
*fDest = atof(cpValueString);
return XN_STATUS_OK;
}
XN_C_API XnStatus xnOSReadIntFromINI(const XnChar* cpINIFile, const XnChar* cpSection, const XnChar* cpKey, XnInt32* nDest)
{
XnStatus nRetVal = XN_STATUS_OK;
XnBool bINIFileExists = FALSE;
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_INPUT_PTR(cpSection);
XN_VALIDATE_INPUT_PTR(cpKey);
XN_VALIDATE_INPUT_PTR(cpINIFile);
XN_VALIDATE_OUTPUT_PTR(nDest);
// Make sure the INI file exists
XN_VALIDATE_FILE_EXISTS_RET(cpINIFile, nRetVal, bINIFileExists, XN_STATUS_OS_INI_FILE_NOT_FOUND);
// find value
XnChar cpValueString[XN_INI_MAX_LEN];
nRetVal = FindEntry(cpINIFile, cpSection, cpKey, cpValueString);
XN_IS_STATUS_OK(nRetVal);
*nDest = atoi(cpValueString);
return XN_STATUS_OK;
}
XN_C_API XnStatus xnOSWriteStringToINI(const XnChar* cpINIFile, const XnChar* cpSection, const XnChar* cpKey, const XnChar* cpSrc)
{
return XN_STATUS_OS_UNSUPPORTED_FUNCTION;
}
XN_C_API XnStatus xnOSWriteFloatToINI(const XnChar* cpINIFile, const XnChar* cpSection, const XnChar* cpKey, const XnFloat fSrc)
{
return XN_STATUS_OS_UNSUPPORTED_FUNCTION;
}
XN_C_API XnStatus xnOSWriteDoubleToINI(const XnChar* cpINIFile, const XnChar* cpSection, const XnChar* cpKey, const XnDouble fSrc)
{
return XN_STATUS_OS_UNSUPPORTED_FUNCTION;
}
XN_C_API XnStatus xnOSWriteIntToINI(const XnChar* cpINIFile, const XnChar* cpSection, const XnChar* cpKey, const XnInt32 nSrc)
{
return XN_STATUS_OS_UNSUPPORTED_FUNCTION;
}
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