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/*
PString.cpp - Lightweight printable string class
Copyright (c) 2009-2012 Mikal Hart. All right reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "PString.h"
#include "Arduino.h"
void PString::begin()
{
_cur = _buf;
if (_size > 0)
_buf[0] = '\0';
}
void PString::begin(char *buf, size_t size)
{
_buf = buf;
_size = size;
_cur = _buf + strlen(_buf);
}
#if defined(ARDUINO) && ARDUINO >= 100
size_t PString::write(uint8_t b)
#else
void PString::write(uint8_t b)
#endif
{
if (_cur + 1 < _buf + _size)
{
*_cur++ = (char)b;
*_cur = '\0';
#if defined(ARDUINO) && ARDUINO >= 100
return 1;
#endif
}
#if defined(ARDUINO) && ARDUINO >= 100
return 0;
#endif
}
int PString::format(char *str, ...)
{
va_list argptr;
va_start(argptr, str);
int ret = vsnprintf(_cur, _size - (_cur - _buf), str, argptr);
if (_size)
while (*_cur)
++_cur;
return ret;
}
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