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-rw-r--r--butl/standard-version257
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diff --git a/butl/standard-version b/butl/standard-version
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--- a/butl/standard-version
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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, earliest and stub):
- //
- // [<epoch>~]<maj>.<min>.<patch>[-(a|b).<num>[.<snapsn>[.<snapid>]]][+<rev>]
- // [<epoch>~]<maj>.<min>.<patch>-
- // 0[+<revision>]
- //
- struct LIBBUTL_EXPORT standard_version
- {
- // Invariants:
- //
- // 1. allow_earliest
- // ? (E == 1) || (snapshot_sn == 0)
- // : (E == 0) == (snapshot_sn == 0)
- //
- // 2. version != 0 || allow_stub && epoch == 0 && snapshot_sn == 0
- //
- // 3. 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;}
-
- // Represented by DDDE in version being 0001 and snapshot_sn being 0.
- //
- // Note that the earliest version is a final alpha pre-release.
- //
- bool
- earliest () const noexcept;
-
- bool
- stub () const noexcept {return version == std::uint64_t (~0);}
-
- // Comparison of empty or stub versions doesn't make sense.
- //
- 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.
- //
- enum flags
- {
- none = 0,
- allow_earliest = 0x01, // Allow <major>.<minor>.<patch>- form.
- allow_stub = 0x02 // Allow 0[+<revision>] form.
- };
-
- explicit
- standard_version (const std::string&, flags = none);
-
- explicit
- standard_version (std::uint64_t version, flags = none);
-
- standard_version (std::uint64_t version,
- const std::string& snapshot,
- flags = none);
-
- standard_version (std::uint16_t epoch,
- std::uint64_t version,
- const std::string& snapshot,
- std::uint16_t revision,
- flags = none);
-
- standard_version (std::uint16_t epoch,
- std::uint64_t version,
- std::uint64_t snapshot_sn,
- std::string snapshot_id,
- std::uint16_t revision,
- flags = none);
-
- // 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 ();
- }
-
- inline standard_version::flags
- operator& (standard_version::flags, standard_version::flags);
-
- inline standard_version::flags
- operator| (standard_version::flags, standard_version::flags);
-
- inline standard_version::flags
- operator&= (standard_version::flags&, standard_version::flags);
-
- inline standard_version::flags
- operator|= (standard_version::flags&, standard_version::flags);
-
- // 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
generated by cgit v1.1 at 2024-11-14 02:55:01 +0000