mirror of
https://github.com/matrix-construct/construct
synced 2024-12-25 15:04:10 +01:00
95 lines
2.6 KiB
C++
95 lines
2.6 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2022 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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//
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// Version registry
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//
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template<>
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decltype(ircd::util::instance_list<ircd::versions>::allocator)
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ircd::util::instance_list<ircd::versions>::allocator
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{};
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template<>
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decltype(ircd::util::instance_list<ircd::versions>::list)
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ircd::util::instance_list<ircd::versions>::list
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{
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allocator
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};
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/// Straightforward construction of versions members; string is copied
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/// into member buffer with null termination.
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ircd::versions::versions(const string_view &name,
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const enum type &type,
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const long &monotonic,
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const std::array<long, 3> &semantic,
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const string_view &string)
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noexcept
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:versions
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{
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name, type, monotonic, semantic, [&string]
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(auto &that, const mutable_buffer &buf) noexcept
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{
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strlcpy(buf, string);
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}
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}
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{
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}
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/// Construction of versions members with closure for custom string generation.
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/// The version string must be stored into buffer with null termination.
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ircd::versions::versions(const string_view &name,
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const enum type &type,
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const long &monotonic,
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const std::array<long, 3> &semantic,
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const std::function<void (versions &, const mutable_buffer &)> &closure)
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noexcept
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:name{name}
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,type{type}
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,monotonic{monotonic}
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,semantic{semantic}
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,string{'\0'}
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{
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if(closure) try
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{
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closure(*this, this->string);
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}
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catch(const std::exception &e)
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{
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log::critical
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{
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"Querying %s version of '%s' :%s",
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type == type::ABI? "ABI"_sv : "API"_sv,
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name,
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e.what(),
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};
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}
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// User provided a string already; nothing else to do
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if(strnlen(this->string, sizeof(this->string)) != 0)
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return;
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// Generate a string from the semantic version number or if all zeroes
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// from the monotonic version number instead.
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if(!this->semantic[0] && !this->semantic[1] && !this->semantic[2])
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::snprintf(this->string, sizeof(this->string), "%ld",
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this->monotonic);
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else
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::snprintf(this->string, sizeof(this->string), "%ld.%ld.%ld",
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this->semantic[0],
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this->semantic[1],
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this->semantic[2]);
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}
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// Required for instance_list template instantiation.
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ircd::versions::~versions()
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noexcept
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{
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}
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