assimp/code/ObjTools.h

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/*
Open Asset Import Library (ASSIMP)
----------------------------------------------------------------------
Copyright (c) 2006-2008, ASSIMP Development Team
All rights reserved.
Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the
following conditions are met:
* Redistributions of source code must retain the above
copyright notice, this list of conditions and the
following disclaimer.
* 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.
* Neither the name of the ASSIMP team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of the ASSIMP Development Team.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
OWNER OR 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.
----------------------------------------------------------------------
*/
/** @file ObjTools.h
* @brief Some helpful templates for text parsing
*/
#ifndef OBJ_TOOLS_H_INC
#define OBJ_TOOLS_H_INC
namespace Assimp
{
/** @brief Returns true, if token is a space on any supported platform
* @param token Token to search in
* @return true, if token is a space
*/
inline bool isSpace(char token)
{
return (token == ' ' || token == '\n' || token == '\f' || token == '\r' ||
token == '\t');
}
/** @brief Returns next word separated by a space
* @param pBuffer Pointer to data buffer
* @param pEnd Pointer to end of buffer
* @return Pointer to next space
*/
template<class Char_T>
inline Char_T getNextWord(Char_T pBuffer, Char_T pEnd)
{
while (pBuffer != pEnd)
{
if (!isSpace(*pBuffer))
break;
pBuffer++;
}
return pBuffer;
}
/** @brief Returns ponter a next token
* @param pBuffer Pointer to data buffer
* @param pEnd Pointer to end of buffer
* @return Pointer to next token
*/
template<class Char_T>
inline Char_T getNextToken(Char_T pBuffer, Char_T pEnd)
{
while (pBuffer != pEnd)
{
if (isSpace(*pBuffer))
break;
pBuffer++;
}
return getNextWord(pBuffer, pEnd);
}
/** @brief Skips a line
* @param Iterator set to current position
* @param Iterator set to end of scratch buffer for readout
* @param Current linenumber in format
* @return Current-iterator with new position
*/
template<class char_t>
inline char_t skipLine(char_t it, char_t end, unsigned int &uiLine)
{
while ( it != end && *it != '\n' )
++it;
if ( it != end )
{
++it;
++uiLine;
}
return it;
}
template<class char_t>
inline char_t getName( char_t it, char_t end, std::string &name )
{
name = "";
it = getNextToken<char_t>( it, end );
if ( it == end )
return end;
char *pStart = &(*it);
while ( !isSpace(*it) && it != end )
++it;
// Get name
std::string strName(pStart, &(*it));
if ( strName.empty() )
return it;
else
name = strName;
return it;
}
template<class char_t>
inline char_t CopyNextWord( char_t it, char_t end, char *pBuffer, size_t length )
{
size_t index = 0;
it = getNextWord<char_t>( it, end );
while (!isSpace( *it ) && it != end )
{
pBuffer[index] = *it ;
index++;
if (index == length-1)
break;
++it;
}
pBuffer[index] = '\0';
return it;
}
} // Namespace Assimp
#endif