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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "growablebytebuffer.h"
#include <arpa/inet.h>
using namespace vespalib;
GrowableByteBuffer::GrowableByteBuffer(uint32_t initialLen) :
_buffer(Alloc::alloc(initialLen)),
_position(0)
{
}
char*
GrowableByteBuffer::allocate(uint32_t len)
{
size_t need(_position + len);
if (need > _buffer.size()) {
uint32_t newSize = vespalib::roundUp2inN(need);
Alloc newBuf(Alloc::alloc(newSize));
memcpy(newBuf.get(), _buffer.get(), _position);
_buffer.swap(newBuf);
}
char* pos = static_cast<char *>(_buffer.get()) + _position;
_position += len;
return pos;
}
void
GrowableByteBuffer::putBytes(const void * buffer, uint32_t length)
{
char* buf = allocate(length);
memcpy(buf, buffer, length);
}
void
GrowableByteBuffer::putShort(uint16_t v)
{
uint16_t val = htons(v);
putBytes(reinterpret_cast<const char*>(&val), sizeof(v));
}
void
GrowableByteBuffer::putInt(uint32_t v)
{
uint32_t val = htonl(v);
putBytes(reinterpret_cast<const char*>(&val), sizeof(v));
}
void
GrowableByteBuffer::putReverse(const char* buffer, uint32_t length)
{
char* buf = allocate(length);
for (uint32_t i = 0; i < length; i++) {
buf[(length - i - 1)] = buffer[i];
}
}
void
GrowableByteBuffer::putLong(uint64_t v)
{
putReverse(reinterpret_cast<const char*>(&v), sizeof(v));
}
void
GrowableByteBuffer::putDouble(double v)
{
putReverse(reinterpret_cast<const char*>(&v), sizeof(v));
}
void
GrowableByteBuffer::putString(vespalib::stringref v)
{
putInt(v.size());
putBytes(v.data(), v.size());
}
void
GrowableByteBuffer::put_c_string(vespalib::stringref v)
{
putInt(v.size() + 1);
putBytes(v.data(), v.size());
putByte(0);
}
void
GrowableByteBuffer::putByte(uint8_t v)
{
putBytes(reinterpret_cast<const char*>(&v), sizeof(v));
}
void
GrowableByteBuffer::putBoolean(bool v)
{
putByte(v);
}
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