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#include "storage/codec.h"
void
tiny_codec_put_u32(unsigned char *output, uint32_t value)
{
if (output == NULL)
{
return;
}
output[0] = (unsigned char)value;
output[1] = (unsigned char)(value >> 8);
output[2] = (unsigned char)(value >> 16);
output[3] = (unsigned char)(value >> 24);
}
void
tiny_codec_put_u64(unsigned char *output, uint64_t value)
{
unsigned index;
if (output == NULL)
{
return;
}
for (index = 0; index < 8; ++index)
{
output[index] = (unsigned char)(value >> (index * 8));
}
}
uint32_t
tiny_codec_get_u32(const unsigned char *input)
{
if (input == NULL)
{
return 0;
}
return (uint32_t)input[0] | ((uint32_t)input[1] << 8) | ((uint32_t)input[2] << 16)
| ((uint32_t)input[3] << 24);
}
uint64_t
tiny_codec_get_u64(const unsigned char *input)
{
uint64_t value = 0;
int index;
if (input == NULL)
{
return 0;
}
for (index = 7; index >= 0; --index)
{
value = (value << 8) | input[index];
}
return value;
}
uint32_t
tiny_codec_crc32(const unsigned char *data, size_t length)
{
uint32_t crc = 0xffffffffU;
size_t index;
if (data == NULL && length != 0)
{
return 0;
}
for (index = 0; index < length; ++index)
{
unsigned bit;
crc ^= data[index];
for (bit = 0; bit < 8; ++bit)
{
crc = (crc >> 1) ^ (0xedb88320U & (uint32_t)-(int32_t)(crc & 1));
}
}
return ~crc;
}
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