#include <cstdarg>

#include <algorithm>

#include <cassert>

#include "StringFormatter.h"

namespace pdf2htmlEX {

StringFormatter::GuardedPointer StringFormatter::operator () (const char * format, ...)

{

assert((buf_cnt == 0) && "StringFormatter: buffer is reused!");

va_list vlist;

va_start(vlist, format);

int l = vsnprintf(&buf.front(), buf.capacity(), format, vlist);

va_end(vlist);

if(l >= (int)buf.capacity())

{

buf.reserve(std::max<long>((long)(l+1), (long)buf.capacity() * 2));

va_start(vlist, format);

l = vsnprintf(&buf.front(), buf.capacity(), format, vlist);

va_end(vlist);

}

assert(l >= 0); // we should fail when vsnprintf fail

assert(l < (int)buf.capacity());

return GuardedPointer(this);

}

} //namespace pdf2htmlEX