31 lines
812 B
C++
31 lines
812 B
C++
#include <cstdarg>
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#include <algorithm>
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#include <cassert>
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#include "StringFormatter.h"
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namespace pdf2htmlEX {
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StringFormatter::GuardedPointer StringFormatter::operator () (const char * format, ...)
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{
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assert((buf_cnt == 0) && "StringFormatter: buffer is reused!");
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va_list vlist;
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va_start(vlist, format);
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int l = vsnprintf(&buf.front(), buf.capacity(), format, vlist);
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va_end(vlist);
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if(l >= (int)buf.capacity())
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{
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buf.reserve(std::max<long>((long)(l+1), (long)buf.capacity() * 2));
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va_start(vlist, format);
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l = vsnprintf(&buf.front(), buf.capacity(), format, vlist);
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va_end(vlist);
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}
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assert(l >= 0); // we should fail when vsnprintf fail
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assert(l < (int)buf.capacity());
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return GuardedPointer(this);
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}
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} //namespace pdf2htmlEX
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