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https://github.com/dolphin-emu/dolphin.git
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116 lines
3.8 KiB
C++
116 lines
3.8 KiB
C++
// Copyright 2008 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "Common/FileSearch.h"
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#include <algorithm>
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#include <filesystem>
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#include <functional>
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#include <iterator>
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#include <system_error>
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#include "Common/CommonPaths.h"
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#include "Common/Logging/Log.h"
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#include "Common/StringUtil.h"
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#ifdef _MSC_VER
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#include <Windows.h>
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#else
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#ifdef ANDROID
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#include "jni/AndroidCommon/AndroidCommon.h"
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#endif
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#include <cstring>
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#include "Common/CommonFuncs.h"
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#include "Common/FileUtil.h"
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#endif
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namespace fs = std::filesystem;
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namespace Common
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{
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std::vector<std::string> DoFileSearch(const std::vector<std::string>& directories,
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const std::vector<std::string>& exts, bool recursive)
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{
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const bool accept_all = exts.empty();
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std::vector<fs::path> native_exts;
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for (const auto& ext : exts)
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native_exts.push_back(StringToPath(ext));
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// N.B. This avoids doing any copies
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auto ext_matches = [&native_exts](const fs::path& path) {
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const std::basic_string_view<fs::path::value_type> native_path = path.native();
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return std::any_of(native_exts.cbegin(), native_exts.cend(), [&native_path](const auto& ext) {
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const auto compare_len = ext.native().length();
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if (native_path.length() < compare_len)
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return false;
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const auto substr_to_compare = native_path.substr(native_path.length() - compare_len);
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#ifdef _WIN32
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return CompareStringOrdinal(substr_to_compare.data(), static_cast<int>(compare_len),
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ext.c_str(), static_cast<int>(compare_len), TRUE) == CSTR_EQUAL;
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#else
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return strncasecmp(substr_to_compare.data(), ext.c_str(), compare_len) == 0;
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#endif
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});
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};
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std::vector<std::string> result;
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auto add_filtered = [&](const fs::directory_entry& entry) {
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auto& path = entry.path();
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if (accept_all || (!entry.is_directory() && ext_matches(path)))
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result.emplace_back(PathToString(path));
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};
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for (const auto& directory : directories)
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{
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#ifdef ANDROID
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if (IsPathAndroidContent(directory))
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{
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const std::vector<std::string> partial_result =
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DoFileSearchAndroidContent(directory, exts, recursive);
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result.insert(result.end(), std::make_move_iterator(partial_result.begin()),
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std::make_move_iterator(partial_result.end()));
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}
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else
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#endif
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{
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fs::path directory_path = StringToPath(directory);
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std::error_code error;
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if (recursive)
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{
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for (auto it = fs::recursive_directory_iterator(std::move(directory_path), error);
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it != fs::recursive_directory_iterator(); it.increment(error))
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add_filtered(*it);
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}
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else
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{
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for (auto it = fs::directory_iterator(std::move(directory_path), error);
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it != fs::directory_iterator(); it.increment(error))
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add_filtered(*it);
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}
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if (error)
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ERROR_LOG_FMT(COMMON, "{} error on {}: {}", __func__, directory, error.message());
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}
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}
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// Remove duplicates (occurring because caller gave e.g. duplicate or overlapping directories -
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// not because std::filesystem returns duplicates). Also note that this pathname-based uniqueness
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// isn't as thorough as std::filesystem::equivalent.
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std::sort(result.begin(), result.end());
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result.erase(std::unique(result.begin(), result.end()), result.end());
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// Dolphin expects to be able to use "/" (DIR_SEP) everywhere.
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// std::filesystem uses the OS separator.
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constexpr fs::path::value_type os_separator = fs::path::preferred_separator;
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static_assert(os_separator == DIR_SEP_CHR || os_separator == '\\', "Unsupported path separator");
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if constexpr (os_separator != DIR_SEP_CHR)
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{
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for (auto& path : result)
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std::replace(path.begin(), path.end(), '\\', DIR_SEP_CHR);
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}
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return result;
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}
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} // namespace Common
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