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// file : butl/standard-version -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef BUTL_STANDARD_VERSION
#define BUTL_STANDARD_VERSION
#include <string>
#include <cstdint> // uint*_t
#include <cstddef> // size_t
#include <ostream>
#include <butl/export>
#include <butl/optional>
namespace butl
{
// The build2 "standard version" (specific and earliest):
//
// [<epoch>~]<maj>.<min>.<patch>[-(a|b).<num>[.<snapsn>[.<snapid>]]][+<rev>]
// [<epoch>~]<maj>.<min>.<patch>-
//
struct LIBBUTL_EXPORT standard_version
{
// Invariants:
//
// 1. allow_earliest
// ? (E == 1) || (snapshot_sn == 0)
// : (E == 0) == (snapshot_sn == 0)
//
// 2. snapshot_sn != latest_sn && snapshot_sn != 0 || snapshot_id.empty ()
//
static const std::uint64_t latest_sn = std::uint64_t (~0);
std::uint16_t epoch = 0; // 0 if not specified.
std::uint64_t version = 0; // AAABBBCCCDDDE
std::uint64_t snapshot_sn = 0; // 0 if not specifed, latest_sn if 'z'.
std::string snapshot_id; // Empty if not specified.
std::uint16_t revision = 0; // 0 if not specified.
std::uint16_t major () const noexcept;
std::uint16_t minor () const noexcept;
std::uint16_t patch () const noexcept;
// Note: 0 is ambiguous (-a.0.z).
//
std::uint16_t pre_release () const noexcept;
// Note: return empty if the corresponding component is unspecified.
//
std::string string () const; // Package version.
std::string string_project () const; // Project version (no epoch/rev).
std::string string_project_id () const; // Project version id (no snapsn).
std::string string_version () const; // Version only (no snapshot).
std::string string_pre_release () const; // Pre-release part only (a.1).
std::string string_snapshot () const; // Snapshot part only (1234.1f23).
bool empty () const noexcept {return version == 0;}
bool alpha () const noexcept;
bool beta () const noexcept;
bool snapshot () const noexcept {return snapshot_sn != 0;}
// Is represented by DDDE being 0001 and snapshot_sn being 0.
//
// Note that the earliest version is a final alpha pre-release.
//
bool
earliest () const noexcept;
int
compare (const standard_version& v) const noexcept
{
if (epoch != v.epoch)
return epoch < v.epoch ? -1 : 1;
if (version != v.version)
return version < v.version ? -1 : 1;
if (snapshot_sn != v.snapshot_sn)
return snapshot_sn < v.snapshot_sn ? -1 : 1;
if (revision != v.revision)
return revision < v.revision ? -1 : 1;
return 0;
}
// Parse the version. Throw std::invalid_argument if the format is not
// recognizable or components are invalid.
//
explicit
standard_version (const std::string&, bool allow_earliest = false);
explicit
standard_version (std::uint64_t version, bool allow_earliest = false);
standard_version (std::uint64_t version,
const std::string& snapshot,
bool allow_earliest = false);
standard_version (std::uint16_t epoch,
std::uint64_t version,
const std::string& snapshot,
std::uint16_t revision,
bool allow_earliest = false);
standard_version (std::uint16_t epoch,
std::uint64_t version,
std::uint64_t snapshot_sn,
std::string snapshot_id,
std::uint16_t revision,
bool allow_earliest = false);
// Create empty version.
//
standard_version () = default;
private:
void
parse_snapshot (const std::string&, std::size_t&);
};
inline bool
operator< (const standard_version& x, const standard_version& y) noexcept
{
return x.compare (y) < 0;
}
inline bool
operator> (const standard_version& x, const standard_version& y) noexcept
{
return x.compare (y) > 0;
}
inline bool
operator== (const standard_version& x, const standard_version& y) noexcept
{
return x.compare (y) == 0;
}
inline bool
operator<= (const standard_version& x, const standard_version& y) noexcept
{
return x.compare (y) <= 0;
}
inline bool
operator>= (const standard_version& x, const standard_version& y) noexcept
{
return x.compare (y) >= 0;
}
inline bool
operator!= (const standard_version& x, const standard_version& y) noexcept
{
return !(x == y);
}
inline std::ostream&
operator<< (std::ostream& o, const standard_version& x)
{
return o << x.string ();
}
// The build2 "standard version" constraint:
//
// ('==' | '>' | '<' | '>=' | '<=') <version>
// ('(' | '[') <version> <version> (')' | ']')
//
struct LIBBUTL_EXPORT standard_version_constraint
{
butl::optional<standard_version> min_version;
butl::optional<standard_version> max_version;
bool min_open;
bool max_open;
// Parse the version constraint. Throw std::invalid_argument on error.
//
explicit
standard_version_constraint (const std::string&);
// Throw std::invalid_argument if the specified version range is invalid.
//
standard_version_constraint (
butl::optional<standard_version> min_version, bool min_open,
butl::optional<standard_version> max_version, bool max_open);
explicit
standard_version_constraint (const standard_version& v)
: standard_version_constraint (v, false, v, false) {}
standard_version_constraint () = default;
std::string
string () const;
bool
empty () const noexcept {return !min_version && !max_version;}
bool
satisfies (const standard_version&) const noexcept;
};
inline bool
operator== (const standard_version_constraint& x,
const standard_version_constraint& y)
{
return x.min_version == y.min_version && x.max_version == y.max_version &&
x.min_open == y.min_open && x.max_open == y.max_open;
}
inline bool
operator!= (const standard_version_constraint& x,
const standard_version_constraint& y)
{
return !(x == y);
}
inline std::ostream&
operator<< (std::ostream& o, const standard_version_constraint& x)
{
return o << x.string ();
}
}
#include <butl/standard-version.ixx>
#endif // BUTL_STANDARD_VERSION
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