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registered_cache: Deduplicate results of ListEntry and ListEntryFilter 

Prevents a Entry from appearing in the list twice if the user has it installed in two places (e.g. User NAND and SDMC)
This commit is contained in:
Zach Hilman 2018-10-17 14:04:18 -04:00
parent 780c21ab2d
commit 59044862a9
2 changed files with 16 additions and 2 deletions
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11
src/core/file_sys/registered_cache.cpp
View File

@ -2,6 +2,7 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <regex>
#include <mbedtls/sha256.h>
#include "common/assert.h"
@ -30,6 +31,10 @@ bool operator<(const RegisteredCacheEntry& lhs, const RegisteredCacheEntry& rhs)
return (lhs.title_id < rhs.title_id) || (lhs.title_id == rhs.title_id && lhs.type < rhs.type);
}
bool operator==(const RegisteredCacheEntry& lhs, const RegisteredCacheEntry& rhs) {
return std::tie(lhs.title_id, lhs.type) == std::tie(rhs.title_id, rhs.type);
}
static bool FollowsTwoDigitDirFormat(std::string_view name) {
static const std::regex two_digit_regex("000000[0-9A-F]{2}", std::regex_constants::ECMAScript |
std::regex_constants::icase);
@ -593,6 +598,9 @@ std::vector<RegisteredCacheEntry> RegisteredCacheUnion::ListEntries() const {
},
[](const CNMT& c, const ContentRecord& r) { return true; });
}
std::sort(out.begin(), out.end());
out.erase(std::unique(out.begin(), out.end()), out.end());
return out;
}
@ -616,6 +624,9 @@ std::vector<RegisteredCacheEntry> RegisteredCacheUnion::ListEntriesFilter(
return true;
});
}
std::sort(out.begin(), out.end());
out.erase(std::unique(out.begin(), out.end()), out.end());
return out;
}
} // namespace FileSys

7
src/core/file_sys/registered_cache.h
View File

@ -50,6 +50,9 @@ constexpr u64 GetUpdateTitleID(u64 base_title_id) {
// boost flat_map requires operator< for O(log(n)) lookups.
bool operator<(const RegisteredCacheEntry& lhs, const RegisteredCacheEntry& rhs);
// std unique requires operator== to identify duplicates.
bool operator==(const RegisteredCacheEntry& lhs, const RegisteredCacheEntry& rhs);
/*
* A class that catalogues NCAs in the registered directory structure.
* Nintendo's registered format follows this structure:
@ -60,8 +63,8 @@ bool operator<(const RegisteredCacheEntry& lhs, const RegisteredCacheEntry& rhs)
* | 00
* | 01 <- Actual content split along 4GB boundaries. (optional)
*
* (This impl also supports substituting the nca dir for an nca file, as that's more convenient when
* 4GB splitting can be ignored.)
* (This impl also supports substituting the nca dir for an nca file, as that's more convenient
* when 4GB splitting can be ignored.)
*/
class RegisteredCache {
friend class RegisteredCacheUnion;