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Merge pull request #4746 from JosJuice/volumedirectory-sort-case-insensitive 

VolumeDirectory: Use case-insensitive comparison when sorting
This commit is contained in:
Matthew Parlane 2017-01-27 18:23:14 +13:00 committed by GitHub
parent 3d5821a9a7 104faa9fb3
commit 017e8050b6
1 changed files with 19 additions and 4 deletions
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23
Source/Core/DiscIO/VolumeDirectory.cpp
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@ -5,6 +5,7 @@
#include <algorithm>
#include <cstddef>
#include <cstring>
#include <locale>
#include <map>
#include <memory>
#include <string>
@ -25,6 +26,7 @@
namespace DiscIO
{
static u32 ComputeNameSize(const File::FSTEntry& parent_entry);
static std::string ASCIIToLowercase(std::string str);
const size_t CVolumeDirectory::MAX_NAME_LENGTH;
const size_t CVolumeDirectory::MAX_ID_LENGTH;
@ -452,10 +454,16 @@ void CVolumeDirectory::WriteDirectory(const File::FSTEntry& parent_entry, u32* f
{
std::vector<File::FSTEntry> sorted_entries = parent_entry.children;
std::sort(sorted_entries.begin(), sorted_entries.end(),
[](const File::FSTEntry& one, const File::FSTEntry& two) {
return one.virtualName < two.virtualName;
});
// Sort for determinism
std::sort(sorted_entries.begin(), sorted_entries.end(), [](const File::FSTEntry& one,
const File::FSTEntry& two) {
// For some reason, sorting by lowest ASCII value first prevents many games from
// fully booting. We make the comparison case insensitive to solve the problem.
// (Highest ASCII value first seems to work regardless of case sensitivity.)
const std::string one_lower = ASCIIToLowercase(one.virtualName);
const std::string two_lower = ASCIIToLowercase(two.virtualName);
return one_lower == two_lower ? one.virtualName < two.virtualName : one_lower < two_lower;
});
for (const File::FSTEntry& entry : sorted_entries)
{
@ -497,4 +505,11 @@ static u32 ComputeNameSize(const File::FSTEntry& parent_entry)
return name_size;
}
static std::string ASCIIToLowercase(std::string str)
{
std::transform(str.begin(), str.end(), str.begin(),
[](char c) { return std::tolower(c, std::locale::classic()); });
return str;
}
} // namespace