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// UUID.h
// Declares the cUUID class representing a Universally Unique Identifier
#pragma once
// tolua_begin
class cUUID
{
public:
/** Default constructed "nil" UUID */
cUUID():
m_UUID()
{
}
/** Lexicographically compare bytes with another UUID.
Returns:
0 when equal to a_Other,
< 0 when less than a_Other,
> 0 when greater than a_Other */
int Compare(const cUUID & a_Other) const
{
return std::memcmp(m_UUID.data(), a_Other.m_UUID.data(), m_UUID.size());
}
/** Returns true if this contains the "nil" UUID with all bits set to 0 */
bool IsNil() const
{
return (m_UUID == std::array<Byte, 16>{{0}});
}
/** Tries to interpret the string as a short or long form UUID and assign from it.
On error, returns false and does not set the value. */
bool FromString(const AString & a_StringUUID);
/** Converts the UUID to a short form string (i.e without dashes). */
AString ToShortString() const;
/** Converts the UUID to a long form string (i.e. with dashes). */
AString ToLongString() const;
/** Returns the version number of the UUID. */
UInt8 Version() const;
/** Returns the variant number of the UUID. */
UInt8 Variant() const;
/** Generates a version 3, variant 1 UUID based on the md5 hash of a_Name. */
static cUUID GenerateVersion3(const AString & a_Name);
// tolua_end
/** Converts UUID to raw memory representation, respecting UUID variant. */
std::array<Byte, 16> ToRaw() const;
/** Assigns from raw memory representation, respecting UUID variant. */
void FromRaw(const std::array<Byte, 16> & a_Raw);
private:
/** Binary UUID stored big-endian. */
std::array<Byte, 16> m_UUID;
}; // tolua_export
// Comparison operators:
inline bool operator == (const cUUID & a_Lhs, const cUUID & a_Rhs)
{
return (a_Lhs.Compare(a_Rhs) == 0);
}
inline bool operator != (const cUUID & a_Lhs, const cUUID & a_Rhs)
{
return (a_Lhs.Compare(a_Rhs) != 0);
}
inline bool operator < (const cUUID & a_Lhs, const cUUID & a_Rhs)
{
return (a_Lhs.Compare(a_Rhs) < 0);
}
inline bool operator <= (const cUUID & a_Lhs, const cUUID & a_Rhs)
{
return (a_Lhs.Compare(a_Rhs) <= 0);
}
inline bool operator > (const cUUID & a_Lhs, const cUUID & a_Rhs)
{
return (a_Lhs.Compare(a_Rhs) > 0);
}
inline bool operator >= (const cUUID & a_Lhs, const cUUID & a_Rhs)
{
return (a_Lhs.Compare(a_Rhs) >= 0);
}
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