Sybren A. Stüvel
029d042e85
Add `BLI_uuid_nil()` that returns the nil UUID (used to indicate "not set") and `BLI_uuid_is_nil(uuid)` to do an equality test with the nil value.
76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#pragma once
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/** \file
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* \ingroup bli
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*
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* Functions for generating and handling UUID structs according to RFC4122.
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*
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* Note that these are true UUIDs, not to be confused with the "session uuid" defined in
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* `BLI_session_uuid.h`.
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*/
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#include "DNA_uuid_types.h"
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#include "BLI_compiler_attrs.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* UUID generator for random (version 4) UUIDs. See RFC4122 section 4.4.
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* This function is not thread-safe. */
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UUID BLI_uuid_generate_random(void);
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/**
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* Return the UUID nil value, consisting of all-zero fields.
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*/
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UUID BLI_uuid_nil(void);
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/** Return true iff this is the nil UUID. */
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bool BLI_uuid_is_nil(UUID uuid);
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/** Compare two UUIDs, return true if they are equal. */
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bool BLI_uuid_equal(UUID uuid1, UUID uuid2);
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/**
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* Format UUID as string.
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* The buffer must be at least 37 bytes (36 bytes for the UUID + terminating 0).
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*/
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void BLI_uuid_format(char *buffer, UUID uuid) ATTR_NONNULL();
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/**
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* Parse a string as UUID.
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* The string MUST be in the format `xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx`,
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* as produced by #BLI_uuid_format().
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*
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* Return true if the string could be parsed, and false otherwise. In the latter case, the UUID may
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* have been partially updated.
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*/
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bool BLI_uuid_parse_string(UUID *uuid, const char *buffer) ATTR_NONNULL();
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#ifdef __cplusplus
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}
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# include <ostream>
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/** Output the UUID as formatted ASCII string, see #BLI_uuid_format(). */
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std::ostream &operator<<(std::ostream &stream, UUID uuid);
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#endif
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