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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "output_writer.h"
#include "output.h"
#include <cstdarg>
#include <cstdio>
#include <cassert>
namespace vespalib {
char *
OutputWriter::reserve_slow(size_t bytes)
{
_data = _output.commit(_pos).reserve(std::max(_chunk_size, bytes));
_pos = 0;
return _data.data;
}
OutputWriter::~OutputWriter()
{
_output.commit(_pos);
}
void
OutputWriter::printf(const char *fmt, ...)
{
char *p = reserve(256);
int space = (_data.size - _pos);
int size;
va_list ap;
va_start(ap, fmt);
size = vsnprintf(p, space, fmt, ap);
va_end(ap);
assert(size >= 0);
if (size >= space) {
space = size + 1;
p = reserve(space);
va_start(ap, fmt);
size = vsnprintf(p, space, fmt, ap);
va_end(ap);
assert((size + 1) == space);
}
commit(size);
}
} // namespace vespalib
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