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Common: Add utility function for case-insensitive string comparison.

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This commit is contained in:
Admiral H. Curtiss 2022-05-31 02:06:42 +02:00
parent 7586fc8134
commit bdb19085c4
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GPG Key ID: F051B4C4044F33FB
3 changed files with 12 additions and 11 deletions
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8
Source/Core/Common/StringUtil.cpp
View File

@ -704,4 +704,12 @@ void ToUpper(std::string* str)
{
std::transform(str->begin(), str->end(), str->begin(), [](char c) { return Common::ToUpper(c); });
}
bool CaseInsensitiveEquals(std::string_view a, std::string_view b)
{
if (a.size() != b.size())
return false;
return std::equal(a.begin(), a.end(), b.begin(),
[](char ca, char cb) { return Common::ToLower(ca) == Common::ToLower(cb); });
}
} // namespace Common

1
Source/Core/Common/StringUtil.h
View File

@ -264,4 +264,5 @@ inline char ToUpper(char ch)
}
void ToLower(std::string* str);
void ToUpper(std::string* str);
bool CaseInsensitiveEquals(std::string_view a, std::string_view b);
} // namespace Common

14
Source/Core/DiscIO/RiivolutionPatcher.cpp
View File

@ -320,14 +320,6 @@ static void ApplyPatchToFile(const Patch& patch, const File& file_patch,
file_patch.m_fileoffset, file_patch.m_length, file_patch.m_resize);
}
static bool CaseInsensitiveEquals(std::string_view a, std::string_view b)
{
if (a.size() != b.size())
return false;
return std::equal(a.begin(), a.end(), b.begin(),
[](char ca, char cb) { return Common::ToLower(ca) == Common::ToLower(cb); });
}
static FSTBuilderNode* FindFileNodeInFST(std::string_view path, std::vector<FSTBuilderNode>* fst,
bool create_if_not_exists)
{
@ -335,7 +327,7 @@ static FSTBuilderNode* FindFileNodeInFST(std::string_view path, std::vector<FSTB
const bool is_file = path_separator == std::string_view::npos;
const std::string_view name = is_file ? path : path.substr(0, path_separator);
const auto it = std::find_if(fst->begin(), fst->end(), [&](const FSTBuilderNode& node) {
return CaseInsensitiveEquals(node.m_filename, name);
return Common::CaseInsensitiveEquals(node.m_filename, name);
});
if (it == fst->end())
@ -377,7 +369,7 @@ static DiscIO::FSTBuilderNode* FindFilenameNodeInFST(std::string_view filename,
if (result)
return result;
}
else if (CaseInsensitiveEquals(node.m_filename, filename))
else if (Common::CaseInsensitiveEquals(node.m_filename, filename))
{
return &node;
}
@ -398,7 +390,7 @@ static void ApplyFilePatchToFST(const Patch& patch, const File& file,
if (node)
ApplyPatchToFile(patch, file, node);
}
else if (dol_node && CaseInsensitiveEquals(file.m_disc, "main.dol"))
else if (dol_node && Common::CaseInsensitiveEquals(file.m_disc, "main.dol"))
{
// Special case: If the filename is "main.dol", we want to patch the main executable.
ApplyPatchToFile(patch, file, dol_node);