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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file LICENSE.rst or https://cmake.org/licensing for details. */
#pragma once
#include "cmConfigure.h" // IWYU pragma: keep
#include <cstdint> // IWYU pragma: keep
#include <initializer_list>
#include <string>
#include <vector>
#include <cm/optional>
#include <cm/string_view>
#include <cmext/enum_set>
#include <cmext/string_view>
class cmMakefile;
class cmWindowsRegistry
{
public:
enum class View
{
Both,
Target,
Host,
Reg64_32,
Reg32_64,
Reg32,
Reg64
};
// Registry supported types
enum class ValueType : std::uint8_t
{
Reg_SZ,
Reg_EXPAND_SZ,
Reg_MULTI_SZ,
Reg_DWORD,
Reg_QWORD
};
using ValueTypeSet = cm::enum_set<ValueType>;
// All types as defined by enum ValueType
static ValueTypeSet const AllTypes;
// same as AllTypes but without type REG_MULTI_SZ
static ValueTypeSet const SimpleTypes;
cmWindowsRegistry(cmMakefile&,
ValueTypeSet const& supportedTypes = AllTypes);
// Helper routine to convert string to enum value
static cm::optional<View> ToView(cm::string_view name);
// Helper routine to convert enum to string
static cm::string_view FromView(View view);
cm::optional<std::string> ReadValue(cm::string_view key,
View view = View::Both,
cm::string_view separator = "\0"_s)
{
return this->ReadValue(key, ""_s, view, separator);
}
cm::optional<std::string> ReadValue(cm::string_view key,
cm::string_view name,
View view = View::Both,
cm::string_view separator = "\0"_s);
cm::optional<std::vector<std::string>> GetValueNames(cm::string_view key,
View view = View::Both);
cm::optional<std::vector<std::string>> GetSubKeys(cm::string_view key,
View view = View::Both);
// Expand an expression which may contains multiple references
// to registry keys.
// Depending of the view specified, one or two expansions can be done.
cm::optional<std::vector<std::string>> ExpandExpression(
cm::string_view expression, View view, cm::string_view separator = "\0"_s);
cm::string_view GetLastError() const;
private:
#if defined(_WIN32) && !defined(__CYGWIN__)
std::vector<View> ComputeViews(View view);
int TargetSize = 0;
ValueTypeSet SupportedTypes = AllTypes;
#endif
std::string LastError;
};
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