feat(miscellaneous): add file system operation functions
This commit is contained in:
parent
38e1c3f8b7
commit
1d5a61f308
@ -1,11 +1,22 @@
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#include <Miscellaneous/FileSystem.h>
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#include "Numerics/Bit.h"
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#include "Numerics/Math.h"
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#include "Templates/ScopeHelper.h"
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#include "Containers/StaticArray.h"
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#include <cstdio>
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#if PLATFORM_WINDOWS
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# undef TEXT
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# include <windows.h>
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# undef CreateDirectory
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#elif PLATFORM_LINUX
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# include <unistd.h>
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# include <dirent.h>
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# include <sys/stat.h>
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#endif
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#pragma warning(push)
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#pragma warning(disable: 4996)
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@ -17,6 +28,8 @@ NAMESPACE_BEGIN(FileSystem)
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bool LoadFileToArray(TArray<uint8>& Result, FStringView Path)
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{
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if (!FileSystem::Exists(Path)) return false;
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FILE* File = std::fopen(*Path, "rb");
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if (File == nullptr) return false;
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@ -27,7 +40,7 @@ bool LoadFileToArray(TArray<uint8>& Result, FStringView Path)
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const long Length = std::ftell(File);
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if (Length == -1) return false;
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if (!Math::IsWithin(Length, 0, TNumericLimits<long>::Max())) return false;
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if (std::fseek(File, 0, SEEK_SET) != 0) return false;
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@ -62,6 +75,8 @@ bool SaveArrayToFile(TArrayView<const uint8> Data, FStringView Path)
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template <CCharType T>
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bool LoadFileToString(TString<T>& Result, FStringView Path, FileSystem::EEncoding Encoding /* = FileSystem::EEncoding::Default */, bool bVerify /* = false */)
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{
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if (!FileSystem::Exists(Path)) return false;
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FILE* File = std::fopen(*Path, "rb");
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if (File == nullptr) return false;
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@ -72,7 +87,7 @@ bool LoadFileToString(TString<T>& Result, FStringView Path, FileSystem::EEncodin
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long Length = std::ftell(File);
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if (Length == -1) return false;
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if (!Math::IsWithin(Length, 0, TNumericLimits<long>::Max())) return false;
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if (std::fseek(File, 0, SEEK_SET) != 0) return false;
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@ -136,7 +151,7 @@ bool LoadFileToString(TString<T>& Result, FStringView Path, FileSystem::EEncodin
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if (ReadNum != sizeof(U)) return false;
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if constexpr (sizeof(U) > 1) if (bByteSwap) Char = Math::ByteSwap(Char);
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if (bByteSwap) Char = Math::ByteSwap(static_cast<TMakeUnsigned<U>>(Char));
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# if PLATFORM_WINDOWS
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{
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@ -187,6 +202,12 @@ bool LoadFileToString(TString<T>& Result, FStringView Path, FileSystem::EEncodin
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return true;
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}
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template REDCRAFTUTILITY_API bool LoadFileToString<char> (FString&, FStringView, FileSystem::EEncoding, bool);
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template REDCRAFTUTILITY_API bool LoadFileToString<wchar> (FWString&, FStringView, FileSystem::EEncoding, bool);
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template REDCRAFTUTILITY_API bool LoadFileToString<u8char> (FU8String&, FStringView, FileSystem::EEncoding, bool);
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template REDCRAFTUTILITY_API bool LoadFileToString<u16char>(FU16String&, FStringView, FileSystem::EEncoding, bool);
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template REDCRAFTUTILITY_API bool LoadFileToString<u32char>(FU32String&, FStringView, FileSystem::EEncoding, bool);
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template <CCharType T>
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bool SaveStringToFile(TStringView<T> String, FStringView Path, FileSystem::EEncoding Encoding /* = FileSystem::EEncoding::Default */, bool bWithBOM /* = true */)
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{
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@ -252,14 +273,14 @@ bool SaveStringToFile(TStringView<T> String, FStringView Path, FileSystem::EEnco
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{
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T Return = LITERAL(T, '\r');
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if constexpr (sizeof(T) > 1) if (bByteSwap) Return = Math::ByteSwap(Return);
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if (bByteSwap) Return = Math::ByteSwap(static_cast<TMakeUnsigned<T>>(Return));
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if (std::fwrite(&Return, 1, sizeof(T), File) != sizeof(T)) return false;
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}
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}
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# endif
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if constexpr (sizeof(T) > 1) if (bByteSwap) Char = Math::ByteSwap(Char);
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if (bByteSwap) Char = Math::ByteSwap(static_cast<TMakeUnsigned<T>>(Char));
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if (std::fwrite(&Char, 1, sizeof(T), File) != sizeof(T)) return false;
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}
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@ -271,21 +292,301 @@ bool SaveStringToFile(TStringView<T> String, FStringView Path, FileSystem::EEnco
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return true;
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}
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FString PathWithNull;
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PathWithNull.Reserve(Path.Num() + 1);
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PathWithNull += Path;
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PathWithNull += '\0';
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switch (Encoding)
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{
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case FileSystem::EEncoding::Narrow: { FString Temp; if (!Temp.DecodeFrom(String)) return false; if (!FileSystem::SaveStringToFile(Temp, Path, FileSystem::EEncoding::Narrow, bWithBOM)) return false; break; }
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case FileSystem::EEncoding::Wide: { FWString Temp; if (!Temp.DecodeFrom(String)) return false; if (!FileSystem::SaveStringToFile(Temp, Path, FileSystem::EEncoding::Wide, bWithBOM)) return false; break; }
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case FileSystem::EEncoding::UTF8: { FU8String Temp; if (!Temp.DecodeFrom(String)) return false; if (!FileSystem::SaveStringToFile(Temp, Path, FileSystem::EEncoding::UTF8, bWithBOM)) return false; break; }
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case FileSystem::EEncoding::UTF16BE: { FU16String Temp; if (!Temp.DecodeFrom(String)) return false; if (!FileSystem::SaveStringToFile(Temp, Path, FileSystem::EEncoding::UTF16BE, bWithBOM)) return false; break; }
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case FileSystem::EEncoding::UTF16LE: { FU16String Temp; if (!Temp.DecodeFrom(String)) return false; if (!FileSystem::SaveStringToFile(Temp, Path, FileSystem::EEncoding::UTF16LE, bWithBOM)) return false; break; }
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case FileSystem::EEncoding::UTF32BE: { FU32String Temp; if (!Temp.DecodeFrom(String)) return false; if (!FileSystem::SaveStringToFile(Temp, Path, FileSystem::EEncoding::UTF32BE, bWithBOM)) return false; break; }
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case FileSystem::EEncoding::UTF32LE: { FU32String Temp; if (!Temp.DecodeFrom(String)) return false; if (!FileSystem::SaveStringToFile(Temp, Path, FileSystem::EEncoding::UTF32LE, bWithBOM)) return false; break; }
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case FileSystem::EEncoding::Narrow: { FString Temp; if (!Temp.DecodeFrom(String)) return false; if (!FileSystem::SaveStringToFile(Temp, PathWithNull, FileSystem::EEncoding::Narrow, bWithBOM)) return false; break; }
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case FileSystem::EEncoding::Wide: { FWString Temp; if (!Temp.DecodeFrom(String)) return false; if (!FileSystem::SaveStringToFile(Temp, PathWithNull, FileSystem::EEncoding::Wide, bWithBOM)) return false; break; }
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case FileSystem::EEncoding::UTF8: { FU8String Temp; if (!Temp.DecodeFrom(String)) return false; if (!FileSystem::SaveStringToFile(Temp, PathWithNull, FileSystem::EEncoding::UTF8, bWithBOM)) return false; break; }
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case FileSystem::EEncoding::UTF16BE: { FU16String Temp; if (!Temp.DecodeFrom(String)) return false; if (!FileSystem::SaveStringToFile(Temp, PathWithNull, FileSystem::EEncoding::UTF16BE, bWithBOM)) return false; break; }
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case FileSystem::EEncoding::UTF16LE: { FU16String Temp; if (!Temp.DecodeFrom(String)) return false; if (!FileSystem::SaveStringToFile(Temp, PathWithNull, FileSystem::EEncoding::UTF16LE, bWithBOM)) return false; break; }
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case FileSystem::EEncoding::UTF32BE: { FU32String Temp; if (!Temp.DecodeFrom(String)) return false; if (!FileSystem::SaveStringToFile(Temp, PathWithNull, FileSystem::EEncoding::UTF32BE, bWithBOM)) return false; break; }
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case FileSystem::EEncoding::UTF32LE: { FU32String Temp; if (!Temp.DecodeFrom(String)) return false; if (!FileSystem::SaveStringToFile(Temp, PathWithNull, FileSystem::EEncoding::UTF32LE, bWithBOM)) return false; break; }
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default: check_no_entry(); return false;
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}
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return true;
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}
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template REDCRAFTUTILITY_API bool SaveStringToFile<char> (FStringView, FStringView, FileSystem::EEncoding, bool);
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template REDCRAFTUTILITY_API bool SaveStringToFile<wchar> (FWStringView, FStringView, FileSystem::EEncoding, bool);
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template REDCRAFTUTILITY_API bool SaveStringToFile<u8char> (FU8StringView, FStringView, FileSystem::EEncoding, bool);
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template REDCRAFTUTILITY_API bool SaveStringToFile<u16char>(FU16StringView, FStringView, FileSystem::EEncoding, bool);
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template REDCRAFTUTILITY_API bool SaveStringToFile<u32char>(FU32StringView, FStringView, FileSystem::EEncoding, bool);
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size_t FileSize(FStringView Path)
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{
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if (!FileSystem::Exists(Path)) return static_cast<size_t>(-1);
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FILE* File = std::fopen(*Path, "rb");
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if (File == nullptr) return static_cast<size_t>(-1);
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auto FileGuard = TScopeCallback([=] { Ignore = std::fclose(File); });
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if (std::fseek(File, 0, SEEK_END) != 0) return static_cast<size_t>(-1);
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const long Length = std::ftell(File);
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if (!Math::IsWithin(Length, 0, TNumericLimits<long>::Max())) return static_cast<size_t>(-1);
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FileGuard.Release();
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if (std::fclose(File) != 0) return static_cast<size_t>(-1);
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return Length;
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}
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bool Delete(FStringView Path)
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{
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return std::remove(*Path) == 0;
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}
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bool Exists(FStringView Path)
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{
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# if PLATFORM_WINDOWS
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{
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DWORD Attributes = GetFileAttributesA(*Path);
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if (Attributes == INVALID_FILE_ATTRIBUTES) return false;
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return !(Attributes & FILE_ATTRIBUTE_DIRECTORY);
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}
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# elif PLATFORM_LINUX
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{
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struct stat FileInfo;
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FileInfo.st_size = -1;
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if (stat(*Path, &FileInfo) != 0) return false;
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if (!S_ISREG(FileInfo.st_mode)) return false;
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return true;
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}
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# endif
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return false;
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}
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bool Copy(FStringView Destination, FStringView Source)
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{
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if (!FileSystem::Exists(Source)) return false;
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FILE* FileA = std::fopen(*Source, "rb");
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if (FileA == nullptr) return false;
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auto FileGuardA = TScopeCallback([=] { Ignore = std::fclose(FileA); });
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FILE* FileB = std::fopen(*Destination, "wb");
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if (FileB == nullptr) return false;
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auto FileGuardB = TScopeCallback([=] { Ignore = std::fclose(FileB); });
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size_t ReadSize;
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constexpr size_t BufferSize = 4096;
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TStaticArray<uint8, BufferSize> Buffer;
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do
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{
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ReadSize = std::fread(Buffer.GetData(), 1, BufferSize, FileA);
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if (std::fwrite(Buffer.GetData(), 1, ReadSize, FileB) != ReadSize) return false;
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}
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while (ReadSize == BufferSize);
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FileGuardA.Release();
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if (std::fclose(FileA) != 0) return false;
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FileGuardB.Release();
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if (std::fclose(FileB) != 0) return false;
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return true;
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}
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bool Rename(FStringView Destination, FStringView Source)
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{
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return std::rename(*Source, *Destination) == 0;
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}
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bool CreateDirectory(FStringView Path, bool bRecursive /* = false */)
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{
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if (Path.Num() == 0) return false;
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if (bRecursive)
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{
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if (Path.Back() == '/' || Path.Back() == '\\') Path = Path.First(Path.Num() - 1);
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FStringView Parent = Path.First(Path.FindLastOf("/\\"));
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if (!FileSystem::ExistsDirectory(Parent) && !FileSystem::CreateDirectory(Parent, true)) return false;
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}
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# if PLATFORM_WINDOWS
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{
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return CreateDirectoryA(*Path, nullptr) != 0;
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}
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# elif PLATFORM_LINUX
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{
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return mkdir(*Path, 0755) == 0;
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}
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# endif
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return false;
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}
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bool DeleteDirectory(FStringView Path, bool bRecursive /* = false */)
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{
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if (bRecursive)
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{
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FString Temp;
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bool bSuccessfully = FileSystem::IterateDirectory(Path, [&](FStringView File, bool bIsDirectory) -> bool
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{
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Temp.Reset(false);
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Temp += Path;
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Temp += '/';
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Temp += File;
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Temp += '\0';
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if (bIsDirectory)
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{
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if (!FileSystem::DeleteDirectory(Temp, true)) return false;
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}
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else
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{
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if (!FileSystem::Delete(Temp)) return false;
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}
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return true;
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});
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if (!bSuccessfully) return false;
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}
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# if PLATFORM_WINDOWS
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{
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return RemoveDirectoryA(*Path) != 0;
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}
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# elif PLATFORM_LINUX
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{
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return rmdir(*Path) == 0;
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}
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# endif
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return false;
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}
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bool ExistsDirectory(FStringView Path)
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{
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# if PLATFORM_WINDOWS
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{
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DWORD Attributes = GetFileAttributesA(*Path);
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if (Attributes == INVALID_FILE_ATTRIBUTES) return false;
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return Attributes & FILE_ATTRIBUTE_DIRECTORY;
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}
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# elif PLATFORM_LINUX
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{
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DIR* Directory = opendir(*Path);
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if (Directory == nullptr) return false;
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Ignore = closedir(Directory);
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return true;
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}
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# endif
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return false;
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}
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bool IterateDirectory(FStringView Path, TFunctionRef<bool(FStringView /* Path */, bool /* bIsDirectory */)> Visitor)
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{
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# if PLATFORM_WINDOWS
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{
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FString FindPath;
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FindPath.Reserve(Path.Num() + 3);
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FindPath += Path;
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FindPath += '\\';
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FindPath += '*';
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FindPath += '\0';
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WIN32_FIND_DATA FindData;
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HANDLE FindHandle = FindFirstFileA(*FindPath, &FindData);
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auto FindGuard = TScopeCallback([=] { Ignore = FindClose(FindHandle); });
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if (FindHandle == INVALID_HANDLE_VALUE) return false;
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do
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{
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const FStringView FilePath = FindData.cFileName;
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if (FilePath == "." || FilePath == "..") continue;
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const bool bIsDirectory = (FindData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
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if (!Visitor(FilePath, bIsDirectory)) return false;
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}
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while (FindNextFileA(FindHandle, &FindData) != 0);
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FindGuard.Release();
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if (!FindClose(FindHandle)) return false;
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return true;
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}
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# elif PLATFORM_LINUX
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{
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DIR* Directory = opendir(*Path);
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if (Directory == nullptr) return false;
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auto DirectoryGuard = TScopeCallback([=] { Ignore = closedir(Directory); });
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dirent* Entry;
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while ((Entry = readdir(Directory)) != nullptr)
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{
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const FStringView FilePath = Entry->d_name;
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if (FilePath == "." || FilePath == "..") continue;
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const bool bIsDirectory = Entry->d_type == DT_DIR;
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if (!Visitor(FilePath, bIsDirectory)) return false;
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}
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DirectoryGuard.Release();
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if (closedir(Directory) != 0) return false;
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return true;
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}
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# endif
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return false;
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}
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NAMESPACE_END(FileSystem)
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NAMESPACE_MODULE_END(Utility)
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@ -2,12 +2,14 @@
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#include "CoreTypes.h"
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#include "TypeTraits/TypeTraits.h"
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#include "Templates/Utility.h"
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#include "Templates/Function.h"
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#include "Containers/Array.h"
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#include "Strings/StringView.h"
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#include "Strings/String.h"
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NAMESPACE_REDCRAFT_BEGIN
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NAMESPACE_MODULE_BEGIN(Redcraft)
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NAMESPACE_MODULE_BEGIN(Redcraft)
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NAMESPACE_MODULE_BEGIN(Utility)
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NAMESPACE_BEGIN(FileSystem)
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@ -42,13 +44,7 @@ REDCRAFTUTILITY_API bool SaveArrayToFile(TArrayView<const uint8> Data, FStringVi
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* @return true if the file was successfully loaded, false otherwise.
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*/
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template <CCharType T>
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bool LoadFileToString(TString<T>& Result, FStringView Path, FileSystem::EEncoding Encoding = FileSystem::EEncoding::Default, bool bVerify = false);
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template REDCRAFTUTILITY_API bool LoadFileToString<char> (FString&, FStringView, FileSystem::EEncoding, bool);
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template REDCRAFTUTILITY_API bool LoadFileToString<wchar> (FWString&, FStringView, FileSystem::EEncoding, bool);
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template REDCRAFTUTILITY_API bool LoadFileToString<u8char> (FU8String&, FStringView, FileSystem::EEncoding, bool);
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template REDCRAFTUTILITY_API bool LoadFileToString<u16char>(FU16String&, FStringView, FileSystem::EEncoding, bool);
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template REDCRAFTUTILITY_API bool LoadFileToString<u32char>(FU32String&, FStringView, FileSystem::EEncoding, bool);
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REDCRAFTUTILITY_API bool LoadFileToString(TString<T>& Result, FStringView Path, FileSystem::EEncoding Encoding = FileSystem::EEncoding::Default, bool bVerify = false);
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/**
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* Saves the string to the file at the specified path.
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@ -61,13 +57,7 @@ template REDCRAFTUTILITY_API bool LoadFileToString<u32char>(FU32String&, FString
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* @return true if the file was successfully saved, false otherwise.
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*/
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template <CCharType T>
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bool SaveStringToFile(TStringView<T> String, FStringView Path, FileSystem::EEncoding Encoding = FileSystem::EEncoding::Default, bool bWithBOM = true);
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template REDCRAFTUTILITY_API bool SaveStringToFile<char> (FStringView, FStringView, FileSystem::EEncoding, bool);
|
||||
template REDCRAFTUTILITY_API bool SaveStringToFile<wchar> (FWStringView, FStringView, FileSystem::EEncoding, bool);
|
||||
template REDCRAFTUTILITY_API bool SaveStringToFile<u8char> (FU8StringView, FStringView, FileSystem::EEncoding, bool);
|
||||
template REDCRAFTUTILITY_API bool SaveStringToFile<u16char>(FU16StringView, FStringView, FileSystem::EEncoding, bool);
|
||||
template REDCRAFTUTILITY_API bool SaveStringToFile<u32char>(FU32StringView, FStringView, FileSystem::EEncoding, bool);
|
||||
REDCRAFTUTILITY_API bool SaveStringToFile(TStringView<T> String, FStringView Path, FileSystem::EEncoding Encoding = FileSystem::EEncoding::Default, bool bWithBOM = true);
|
||||
|
||||
/**
|
||||
* Saves the string to the file at the specified path.
|
||||
@ -92,6 +82,24 @@ bool SaveStringToFile(T&& String, FStringView Path, FileSystem::EEncoding Encodi
|
||||
return false;
|
||||
}
|
||||
|
||||
REDCRAFTUTILITY_API size_t FileSize(FStringView Path);
|
||||
|
||||
REDCRAFTUTILITY_API bool Delete(FStringView Path);
|
||||
|
||||
REDCRAFTUTILITY_API bool Exists(FStringView Path);
|
||||
|
||||
REDCRAFTUTILITY_API bool Copy(FStringView Destination, FStringView Source);
|
||||
|
||||
REDCRAFTUTILITY_API bool Rename(FStringView Destination, FStringView Source);
|
||||
|
||||
REDCRAFTUTILITY_API bool CreateDirectory(FStringView Path, bool bRecursive = false);
|
||||
|
||||
REDCRAFTUTILITY_API bool DeleteDirectory(FStringView Path, bool bRecursive = false);
|
||||
|
||||
REDCRAFTUTILITY_API bool ExistsDirectory(FStringView Path);
|
||||
|
||||
REDCRAFTUTILITY_API bool IterateDirectory(FStringView Path, TFunctionRef<bool(FStringView /* Path */, bool /* bIsDirectory */)> Visitor);
|
||||
|
||||
NAMESPACE_END(FileSystem)
|
||||
|
||||
NAMESPACE_MODULE_END(Utility)
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user