3aef1ee569
Prefer move-assignment over use of reset() so that the count cannot go out of sync from the list. Shorten lifetime of some lists.
94 lines
2.4 KiB
C++
94 lines
2.4 KiB
C++
/*
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* This file is part of the DXX-Rebirth project <https://www.dxx-rebirth.com/>.
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* It is copyright by its individual contributors, as recorded in the
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* project's Git history. See COPYING.txt at the top level for license
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* terms and a link to the Git history.
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*/
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#pragma once
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#include <physfs.h>
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typedef char file_extension_t[5];
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#ifdef __cplusplus
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#include <cstdint>
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#include <memory>
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#include "null_sentinel_iterator.h"
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#include "dxxsconf.h"
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#include "dsx-ns.h"
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#include "fwd-partial_range.h"
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#include <array>
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#include "backports-ranges.h"
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namespace dcx {
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class PHYSFS_list_deleter
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{
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public:
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void operator()(char **list) const
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{
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PHYSFS_freeList(list);
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}
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};
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template <typename Deleter>
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class PHYSFSX_uncounted_list_template : protected std::unique_ptr<char *[], Deleter>
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{
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using base_type = std::unique_ptr<char *[], Deleter>;
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public:
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typedef null_sentinel_iterator<char *> const_iterator;
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using base_type::base_type;
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using base_type::get;
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using base_type::operator bool;
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using base_type::operator[];
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using base_type::release;
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using base_type::reset;
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const_iterator begin() const
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{
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return this->get();
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}
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const_iterator end() const
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{
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return {};
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}
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};
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template <typename Deleter>
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class PHYSFSX_counted_list_template : public PHYSFSX_uncounted_list_template<Deleter>
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{
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using base_type = PHYSFSX_uncounted_list_template<Deleter>;
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std::size_t count = 0;
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public:
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/* Inherit the zero-argument form of reset(), for clearing a list.
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* Override and delete the one-argument form, so that the list cannot be
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* given new contents, with a potentially different length, using
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* `reset(other_list);`
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*/
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using base_type::reset;
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void reset(auto) = delete;
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constexpr PHYSFSX_counted_list_template() = default;
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constexpr PHYSFSX_counted_list_template(base_type &&base, std::size_t count) :
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base_type{std::move(base)}, count{count}
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{
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}
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std::size_t get_count() const
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{
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return count;
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}
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};
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typedef PHYSFSX_uncounted_list_template<PHYSFS_list_deleter> PHYSFSX_uncounted_list;
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typedef PHYSFSX_counted_list_template<PHYSFS_list_deleter> PHYSFSX_counted_list;
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[[nodiscard]]
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__attribute_nonnull()
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PHYSFSX_uncounted_list PHYSFSX_findFiles(const char *path, ranges::subrange<const file_extension_t *> exts);
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[[nodiscard]]
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__attribute_nonnull()
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PHYSFSX_uncounted_list PHYSFSX_findabsoluteFiles(const char *path, const char *realpath, ranges::subrange<const file_extension_t *> exts);
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}
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#endif
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