144 lines
4.4 KiB
C++
144 lines
4.4 KiB
C++
/*
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Open Asset Import Library (assimp)
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----------------------------------------------------------------------
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Copyright (c) 2006-2018, assimp team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the
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following conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the assimp team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the assimp team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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----------------------------------------------------------------------
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*/
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#ifndef INCLUDED_AI_STRINGUTILS_H
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#define INCLUDED_AI_STRINGUTILS_H
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#include <assimp/defs.h>
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#include <sstream>
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#include <stdarg.h>
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#include <cstdlib>
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/// @fn ai_snprintf
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/// @brief The portable version of the function snprintf ( C99 standard ), which works on visual studio compilers 2013 and earlier.
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/// @param outBuf The buffer to write in
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/// @param size The buffer size
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/// @param format The format string
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/// @param ap The additional arguments.
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/// @return The number of written characters if the buffer size was big enough. If an encoding error occurs, a negative number is returned.
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#if defined(_MSC_VER) && _MSC_VER < 1900
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AI_FORCE_INLINE
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int c99_ai_vsnprintf(char *outBuf, size_t size, const char *format, va_list ap) {
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int count(-1);
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if (0 != size) {
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count = _vsnprintf_s(outBuf, size, _TRUNCATE, format, ap);
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}
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if (count == -1) {
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count = _vscprintf(format, ap);
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}
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return count;
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}
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AI_FORCE_INLINE
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int ai_snprintf(char *outBuf, size_t size, const char *format, ...) {
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int count;
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va_list ap;
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va_start(ap, format);
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count = c99_ai_vsnprintf(outBuf, size, format, ap);
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va_end(ap);
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return count;
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}
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#else
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# define ai_snprintf snprintf
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#endif
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/// @fn to_string
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/// @brief The portable version of to_string ( some gcc-versions on embedded devices are not supporting this).
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/// @param value The value to write into the std::string.
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/// @return The value as a std::string
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template <typename T>
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AI_FORCE_INLINE
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std::string to_string( T value ) {
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std::ostringstream os;
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os << value;
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return os.str();
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}
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/// @fn ai_strtof
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/// @brief The portable version of strtof.
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/// @param begin The first character of the string.
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/// @param end The last character
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/// @return The float value, 0.0f in cas of an error.
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AI_FORCE_INLINE
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float ai_strtof( const char *begin, const char *end ) {
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if ( nullptr == begin ) {
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return 0.0f;
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}
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float val( 0.0f );
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if ( nullptr == end ) {
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val = static_cast< float >( ::atof( begin ) );
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} else {
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std::string::size_type len( end - begin );
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std::string token( begin, len );
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val = static_cast< float >( ::atof( token.c_str() ) );
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}
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return val;
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}
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/// @fn DecimalToHexa
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/// @brief The portable to convert a decimal value into a hexadecimal string.
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/// @param toConvert Value to convert
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/// @return The hexadecimal string, is empty in case of an error.
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template<class T>
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AI_FORCE_INLINE
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std::string DecimalToHexa( T toConvert ) {
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std::string result;
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std::stringstream ss;
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ss << std::hex << toConvert;
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ss >> result;
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for ( size_t i = 0; i < result.size(); ++i ) {
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result[ i ] = toupper( result[ i ] );
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}
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return result;
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}
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#endif // INCLUDED_AI_STRINGUTILS_H
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