File & FileSystem abstractions
This commit is contained in:
parent
1297af3db1
commit
5e60726a2b
4
.github/workflows/build.yml
vendored
4
.github/workflows/build.yml
vendored
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@ -58,8 +58,8 @@ jobs:
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- name: Make output folder
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- name: Make output folder
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run: mkdir ./test-results
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run: mkdir ./test-results
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- name: Test shadow-file-format
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- name: Test shadow-assets
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run: ./bazel-bin/projs/shadow-file-format/test.exe -r junit -o ./test-results/shadow-file-format-test.xml
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run: ./bazel-bin/projs/shadow-assets/test.exe -r junit -o ./test-results/shadow-assets-test.xml
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- name: Publish Test Results
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- name: Publish Test Results
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uses: EnricoMi/publish-unit-test-result-action/composite@v1
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uses: EnricoMi/publish-unit-test-result-action/composite@v1
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41
imgui.ini
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imgui.ini
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@ -5,37 +5,36 @@ Collapsed=0
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DockId=0x00000008,0
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DockId=0x00000008,0
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[Window][Dear ImGui Demo]
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[Window][Dear ImGui Demo]
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Pos=1193,178
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Pos=1193,111
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Size=62,25
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Size=62,92
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Collapsed=0
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Collapsed=0
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DockId=0x00000007,0
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DockId=0x00000003,0
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[Window][Game module window]
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[Window][Game module window]
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Pos=1193,8
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Pos=956,275
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Size=62,50
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Size=302,121
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Collapsed=0
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Collapsed=0
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DockId=0x00000004,0
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[Window][Time]
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[Window][Time]
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Pos=1193,60
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Pos=1193,8
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Size=62,49
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Size=62,101
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Collapsed=0
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Collapsed=0
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DockId=0x00000005,0
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DockId=0x00000002,0
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[Window][Active Modules]
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[Window][Active Modules]
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Pos=1193,111
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Pos=829,449
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Size=62,65
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Size=362,187
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Collapsed=0
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[Window][Game View]
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Pos=60,60
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Size=656,515
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Collapsed=0
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Collapsed=0
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DockId=0x00000006,0
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[Docking][Data]
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[Docking][Data]
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DockNode ID=0x00000001 Pos=1196,188 Size=379,195 Split=X
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DockNode ID=0x00000001 Pos=1196,188 Size=379,195 Split=X
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DockNode ID=0x00000008 Parent=0x00000001 SizeRef=652,419 HiddenTabBar=1 Selected=0x55954704
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DockNode ID=0x00000008 Parent=0x00000001 SizeRef=652,419 HiddenTabBar=1 Selected=0x55954704
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DockNode ID=0x00000009 Parent=0x00000001 SizeRef=129,419 Split=Y
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DockNode ID=0x00000009 Parent=0x00000001 SizeRef=129,419 Split=Y
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DockNode ID=0x00000002 Parent=0x00000009 SizeRef=219,34 Split=Y Selected=0xFC1D20C0
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DockNode ID=0x00000002 Parent=0x00000009 SizeRef=219,34 Selected=0xE75A179E
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DockNode ID=0x00000004 Parent=0x00000002 SizeRef=219,64 Selected=0xFC1D20C0
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DockNode ID=0x00000003 Parent=0x00000009 SizeRef=219,31 Selected=0xE87781F4
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DockNode ID=0x00000005 Parent=0x00000002 SizeRef=219,62 Selected=0xE75A179E
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DockNode ID=0x00000003 Parent=0x00000009 SizeRef=219,31 Split=Y Selected=0xEE305C78
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DockNode ID=0x00000006 Parent=0x00000003 SizeRef=219,142 Selected=0xEE305C78
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DockNode ID=0x00000007 Parent=0x00000003 SizeRef=219,55 Selected=0xE87781F4
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@ -5,6 +5,8 @@ find_package(imgui REQUIRED)
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set(CMAKE_CXX_STANDARD 20)
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set(CMAKE_CXX_STANDARD 20)
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set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
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set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
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add_subdirectory(shadow-assets)
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FILE(GLOB_RECURSE SOURCES
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FILE(GLOB_RECURSE SOURCES
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core/src/*.cpp
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core/src/*.cpp
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shadow-renderer/src/*.cpp
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shadow-renderer/src/*.cpp
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@ -5,9 +5,10 @@ list(APPEND CMAKE_MODULE_PATH "cmake")
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enable_testing()
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enable_testing()
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# Set up asset sourceset
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# Set up asset sourceset
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FILE(GLOB_RECURSE SOURCES src/*.cpp src/*.h)
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FILE(GLOB_RECURSE SOURCES src/**.cpp src/**.h)
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FILE(GLOB_RECURSE TESTS test/*.cpp)
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FILE(GLOB_RECURSE TESTS test/*.cpp)
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include_directories(src/)
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add_library(shadow-asset ${SOURCES})
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add_library(shadow-asset ${SOURCES})
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# Set up test executable
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# Set up test executable
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@ -15,6 +16,6 @@ add_executable(shadow-asset-test ${TESTS})
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target_link_libraries(shadow-asset-test PRIVATE Catch2::Catch2 shadow-utils)
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target_link_libraries(shadow-asset-test PRIVATE Catch2::Catch2 shadow-utils)
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# Enable testing on the executable
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# Enable testing on the executable
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include(CTest)
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#include(CTest)
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include(Catch)
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#include(Catch2)
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catch_discover_tests(shadow-asset-test)
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#catch_discover_tests(shadow-asset-test)
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112
projs/shadow/shadow-engine/shadow-assets/src/fs/file.h
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projs/shadow/shadow-engine/shadow-assets/src/fs/file.h
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@ -0,0 +1,112 @@
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#pragma once
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#include <fs/iostream.h>
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#include <memory>
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namespace ShadowEngine {
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// An input stream that can read a file on disk.
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struct FileInput final : InputStream {
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FileInput();
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~FileInput() = default;
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[[nodiscard]] bool open(std::string& path);
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void close();
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using InputStream::read;
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[[nodiscard]] bool read(void* data, size_t size) override;
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const void* getBuffer() const override { return nullptr; }
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size_t size() const override;
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size_t pos();
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[[nodiscard]] bool seek(size_t pos);
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private:
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void* handle;
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};
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// An output stream that can write to a file on disk.
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struct FileOutput final : OutputStream {
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FileOutput();
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~FileOutput() = default;
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[[nodiscard]] bool open(std::string& path);
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void close();
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void flush();
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bool errored() const { return error; }
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using OutputStream::write;
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[[nodiscard]] bool write(const void* data, size_t size) override;
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private:
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FileOutput(const FileOutput&) = delete;
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void* handle;
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bool error;
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};
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struct FileInfo {
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bool directory;
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std::string filename;
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};
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template <class T> struct Delegate;
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/**
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* A generic Filesystem API.
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* Allows interacting with files on disk the same as files in our Virtual Package Format.
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*/
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struct FileSystem {
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// A function called when the data of a file is updated, such as when an asynchronous operation completes.
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using ContentCallback = Delegate<void(size_t, const uint8_t*, bool)>;
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// A handle for asynchronous data movement; such as reading or writing a file.
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struct AsyncHandle {
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static AsyncHandle invalid() { return AsyncHandle(0xffffffff); }
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explicit AsyncHandle(uint32_t val) : value(val) {}
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[[nodiscard]] bool valid() const { return value != 0xffffffff; }
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uint32_t value;
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};
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// Create a Filesystem that interacts with files on disk.
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static std::unique_ptr<FileSystem>& createDiskFS(std::string& basePath);
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// Create a Virtual Filesystem based on the given path.
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static std::unique_ptr<FileSystem>& createVFS(std::string& basePath);
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virtual ~FileSystem() {}
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// Open a file for reading.
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virtual bool open(std::string& path, FileInput& input) = 0;
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// Open a file for writing.
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virtual bool open(std::string& path, FileOutput& output) = 0;
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// Check whether a file exists at the given path.
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virtual bool fileExists(std::string& path) = 0;
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// Get the time a file at the given path was last modified.
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virtual size_t getLastModified(std::string& path) = 0;
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// Copy a file from one path to another.
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virtual bool copyFile(std::string& from, std::string& to) = 0;
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// Move a file from one path to another.
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virtual bool moveFile(std::string& from, std::string& to) = 0;
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// Disassociate any files at the given path (not an immediate delete)
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virtual bool deleteFile(std::string& path) = 0;
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// Get the path that this FileSystem originates at. The default is "/" for VFS, and whatever the Executable Path is for Disk FS.
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virtual std::string& getBasePath() = 0;
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// Set a new base path for the FileSystem. Any operations involving file paths will be relative to this new path.
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virtual void setBasePath(std::string& path) = 0;
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// Process all the callbacks for async file operations.
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virtual void processCallbacks() = 0;
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// Check whether there are any outstanding async operations that need work.
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virtual bool hasWork() = 0;
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// Write new content to a file synchronously. The thread will be blocked when doing this.
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virtual bool saveSync(const struct Path& file, const uint8_t* content) = 0;
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// Read content from a file synchronously. The thread will be blocked when doing this.
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virtual bool readSync(const struct Path& file, struct OutputMemoryStream& content) = 0;
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// Read a file asynchronously. The given callback will be called with the file content once it is available.
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virtual AsyncHandle readAsync(const Path& file, const ContentCallback& callback) = 0;
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// Cancel an asynchronous operation, if it is not already complete. The associated callback will be called with a special flag.
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virtual void cancelAsync(AsyncHandle& handle) = 0;
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};
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}
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148
projs/shadow/shadow-engine/shadow-assets/src/fs/hash.cpp
Normal file
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projs/shadow/shadow-engine/shadow-assets/src/fs/hash.cpp
Normal file
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@ -0,0 +1,148 @@
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#include <fs/hash.h>
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#include "xxhash.h"
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namespace ShadowEngine {
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StableHash::StableHash(const void *data, uint32_t length) {
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hash = XXHash64::hash(data, length, 0);
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}
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StableHash::StableHash(std::string &str) {
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hash = XXHash64::hash(str.data(), str.size(), 0);
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}
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HeapHash::HeapHash(const void *data, uint32_t length) {
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hash = XXHash64::hash(data, length, 0);
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}
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HeapHash::HeapHash(std::string &str) {
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hash = XXHash64::hash(str.data(), str.size(), 0);
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}
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HeapHash HeapHash::fromLong(size_t hash) {
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HeapHash heap;
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heap.hash = hash;
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return heap;
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}
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HeapHash32 HeapHash32::fromInt(uint32_t hash) {
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HeapHash32 heap;
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heap.hash = hash;
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return heap;
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}
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StableHash StableHash::fromLong(size_t hash) {
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StableHash stable;
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stable.hash = hash;
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return stable;
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}
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StableHash32 StableHash32::fromInt(uint32_t hash) {
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StableHash32 stable;
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stable.hash = hash;
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return stable;
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}
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static uint32_t CRC[256] = {
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0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
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0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
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0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
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0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
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0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
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0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
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0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
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0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
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0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
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0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
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0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
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0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
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0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
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0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
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0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
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0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
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0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
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0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
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0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
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0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
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0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
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0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
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0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
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0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
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0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
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0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
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0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
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0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
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0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
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0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
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0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
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0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
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0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
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0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
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0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
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0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
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0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
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||||||
|
0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
|
||||||
|
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
|
||||||
|
0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
|
||||||
|
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
|
||||||
|
0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
|
||||||
|
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d};
|
||||||
|
|
||||||
|
static uint32_t CRC32(const void* data, uint32_t length) {
|
||||||
|
const auto* c = static_cast<const uint8_t*>(data);
|
||||||
|
uint32_t crcTemp = 0xFFFFFFFF;
|
||||||
|
uint32_t len = length;
|
||||||
|
while (len) {
|
||||||
|
crcTemp = (crcTemp >> 8) ^ CRC[(crcTemp & 0xFF) ^ *c];
|
||||||
|
--len; ++c;
|
||||||
|
}
|
||||||
|
|
||||||
|
return ~crcTemp;
|
||||||
|
}
|
||||||
|
|
||||||
|
StableHash32::StableHash32(const void *data, uint32_t length) {
|
||||||
|
hash = CRC32(data, length);
|
||||||
|
}
|
||||||
|
|
||||||
|
StableHash32::StableHash32(std::string &str) {
|
||||||
|
hash = CRC32(str.data(), str.size());
|
||||||
|
}
|
||||||
|
|
||||||
|
static XXHash64 DeferredHashState(0);
|
||||||
|
|
||||||
|
DeferredHash::DeferredHash() {
|
||||||
|
DeferredHashState = XXHash64(0);
|
||||||
|
}
|
||||||
|
|
||||||
|
void DeferredHash::insert(const void *data, uint32_t length) {
|
||||||
|
DeferredHashState.add(data, length);
|
||||||
|
}
|
||||||
|
|
||||||
|
StableHash32 DeferredHash::submit32() {
|
||||||
|
const auto result = DeferredHashState.hash();
|
||||||
|
return StableHash32::fromInt(uint32_t(result ^ (result >> 32)));
|
||||||
|
}
|
||||||
|
|
||||||
|
StableHash DeferredHash::submit() {
|
||||||
|
const auto result = DeferredHashState.hash();
|
||||||
|
return StableHash::fromLong(result);
|
||||||
|
}
|
||||||
|
|
||||||
|
DeferredHeapHash::DeferredHeapHash() {
|
||||||
|
DeferredHashState = XXHash64(0);
|
||||||
|
}
|
||||||
|
|
||||||
|
void DeferredHeapHash::insert(const void *data, uint32_t length) {
|
||||||
|
DeferredHashState.add(data, length);
|
||||||
|
}
|
||||||
|
|
||||||
|
HeapHash32 DeferredHeapHash::submit32() {
|
||||||
|
const auto result = DeferredHashState.hash();
|
||||||
|
return HeapHash32::fromInt(uint32_t(result ^ (result >> 32)));
|
||||||
|
}
|
||||||
|
|
||||||
|
HeapHash DeferredHeapHash::submit() {
|
||||||
|
const auto result = DeferredHashState.hash();
|
||||||
|
return HeapHash::fromLong(result);
|
||||||
|
}
|
||||||
|
}
|
158
projs/shadow/shadow-engine/shadow-assets/src/fs/hash.h
Normal file
158
projs/shadow/shadow-engine/shadow-assets/src/fs/hash.h
Normal file
|
@ -0,0 +1,158 @@
|
||||||
|
#pragma once
|
||||||
|
#include <string>
|
||||||
|
|
||||||
|
namespace ShadowEngine {
|
||||||
|
|
||||||
|
/**
|
||||||
|
* A 64-bit hashing algorithm that uses the state of the allocation heap as a "salt".
|
||||||
|
* Outputs are NOT stable, so do not serialize this.
|
||||||
|
* However, because it uses the heap, it has a very low collision rate.
|
||||||
|
*/
|
||||||
|
struct HeapHash {
|
||||||
|
// For if you MUST recreate a hash exactly.
|
||||||
|
// Please only use this for testing.
|
||||||
|
static HeapHash fromLong(size_t hash);
|
||||||
|
|
||||||
|
HeapHash() = default;
|
||||||
|
// Hash a string; for paths and such.
|
||||||
|
explicit HeapHash(std::string& str);
|
||||||
|
// Hash arbitrary data.
|
||||||
|
HeapHash(const void* data, uint32_t length);
|
||||||
|
|
||||||
|
bool operator!= (HeapHash& other) const { return hash != other.hash; }
|
||||||
|
bool operator== (HeapHash& other) const { return hash == other.hash; }
|
||||||
|
|
||||||
|
size_t getHash() const { return hash; }
|
||||||
|
private:
|
||||||
|
size_t hash = 0;
|
||||||
|
};
|
||||||
|
|
||||||
|
/**
|
||||||
|
* A 32-bit hashing algorithm that uses the state of the allocation heap as a "salt".
|
||||||
|
* Outputs are NOT stable, so do not serialize this.
|
||||||
|
* However, because it uses the heap, it has a very low collision rate.
|
||||||
|
*/
|
||||||
|
struct HeapHash32 {
|
||||||
|
// For if you MUST recreate a hash exactly.
|
||||||
|
// Please only use this for testing.
|
||||||
|
static HeapHash32 fromInt(uint32_t hash);
|
||||||
|
|
||||||
|
HeapHash32() = default;
|
||||||
|
// Hash a string; for paths and such.
|
||||||
|
explicit HeapHash32(std::string& str);
|
||||||
|
// Hash arbitrary data.
|
||||||
|
HeapHash32(const void* data, uint32_t length);
|
||||||
|
|
||||||
|
bool operator!= (HeapHash32& other) const { return hash != other.hash; }
|
||||||
|
bool operator== (HeapHash32& other) const { return hash == other.hash; }
|
||||||
|
|
||||||
|
uint32_t getHash() const { return hash; }
|
||||||
|
private:
|
||||||
|
uint32_t hash = 0;
|
||||||
|
};
|
||||||
|
|
||||||
|
/**
|
||||||
|
* A 64-bit hashing algorithm that generates the same hash value per input every time.
|
||||||
|
* A little more likely to generate conflicts than the hash that uses the state of the heap as a salt.
|
||||||
|
* Suitable for serialization.
|
||||||
|
*/
|
||||||
|
struct StableHash {
|
||||||
|
static StableHash fromLong(size_t data);
|
||||||
|
StableHash() = default;
|
||||||
|
StableHash(std::string& str);
|
||||||
|
StableHash(const void* data, uint32_t length);
|
||||||
|
|
||||||
|
bool operator!= (StableHash& other) const { return hash != other.hash; }
|
||||||
|
bool operator== (StableHash& other) const { return hash == other.hash; }
|
||||||
|
bool operator< (StableHash& other) const { return hash < other.hash; }
|
||||||
|
|
||||||
|
size_t getHash() const { return hash; }
|
||||||
|
|
||||||
|
private:
|
||||||
|
size_t hash = 0;
|
||||||
|
};
|
||||||
|
|
||||||
|
/**
|
||||||
|
* A 32-bit hashing algorithm that generates the same hash value per input every time.
|
||||||
|
* A little more likely to generate conflicts than the hash that uses the state of the heap as a salt.
|
||||||
|
* Suitable for serialization.
|
||||||
|
*/
|
||||||
|
struct StableHash32 {
|
||||||
|
static StableHash32 fromInt(uint32_t data);
|
||||||
|
StableHash32() = default;
|
||||||
|
StableHash32(std::string& str);
|
||||||
|
StableHash32(const void* data, uint32_t length);
|
||||||
|
|
||||||
|
bool operator!= (StableHash32& other) const { return hash != other.hash; }
|
||||||
|
bool operator== (StableHash32& other) const { return hash == other.hash; }
|
||||||
|
bool operator< (StableHash32& other) const { return hash < other.hash; }
|
||||||
|
|
||||||
|
uint32_t getHash() const { return hash; }
|
||||||
|
|
||||||
|
private:
|
||||||
|
uint32_t hash = 0;
|
||||||
|
};
|
||||||
|
|
||||||
|
// File Paths are hashed using the 64-bit StableHash system.
|
||||||
|
using PathHash = StableHash;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* A hashing utility that lets you insert data piecemeal before committing to the hash.
|
||||||
|
* Useful for when you're parsing a file and need to wait for more data to be available before hashing.
|
||||||
|
* Generates a Stable Hash.
|
||||||
|
*/
|
||||||
|
struct DeferredHash {
|
||||||
|
DeferredHash();
|
||||||
|
// Insert new data to be considered for hashing
|
||||||
|
void insert(const void* data, uint32_t length);
|
||||||
|
// Submit the data to the hashing algorithm, and return a value in 64-bit StableHash
|
||||||
|
StableHash submit();
|
||||||
|
// Submit the data to the hashing algorithm, and return a value in 32-bit StableHash
|
||||||
|
StableHash32 submit32();
|
||||||
|
};
|
||||||
|
|
||||||
|
/**
|
||||||
|
* A hashing utility that lets you insert data piecemeal before committing to the hash.
|
||||||
|
* Useful for when you're parsing a file and need to wait for more data to be available before hashing.
|
||||||
|
* Generates a Heap Hash.
|
||||||
|
*/
|
||||||
|
struct DeferredHeapHash {
|
||||||
|
DeferredHeapHash();
|
||||||
|
// Insert new data to be considered for hashing
|
||||||
|
void insert(const void* data, uint32_t length);
|
||||||
|
// Submit the data to the hashing algorithm, and return a value in 64-bit HeapHash
|
||||||
|
HeapHash submit();
|
||||||
|
// Submit the data to the hashing algorithm, and return a value in 32-bit HeapHash
|
||||||
|
HeapHash32 submit32();
|
||||||
|
};
|
||||||
|
|
||||||
|
/** The implementations of these hashing algorithms */
|
||||||
|
|
||||||
|
template <class Hash> struct HashFunc;
|
||||||
|
|
||||||
|
template<> struct HashFunc<HeapHash> {
|
||||||
|
static uint32_t get(const HeapHash& h) {
|
||||||
|
const size_t hash = h.getHash();
|
||||||
|
return uint32_t(hash & (hash >> 16));
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
template<> struct HashFunc<StableHash> {
|
||||||
|
static uint32_t get(const StableHash& h) {
|
||||||
|
const size_t hash = h.getHash();
|
||||||
|
return uint32_t(hash & (hash >> 16));
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
template<> struct HashFunc<HeapHash32> {
|
||||||
|
static uint32_t get(const HeapHash32& h) {
|
||||||
|
return h.getHash();
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
template<> struct HashFunc<StableHash32> {
|
||||||
|
static uint32_t get(const StableHash& h) {
|
||||||
|
return h.getHash();
|
||||||
|
}
|
||||||
|
};
|
||||||
|
}
|
212
projs/shadow/shadow-engine/shadow-assets/src/fs/iostream.cpp
Normal file
212
projs/shadow/shadow-engine/shadow-assets/src/fs/iostream.cpp
Normal file
|
@ -0,0 +1,212 @@
|
||||||
|
#include <fs/iostream.h>
|
||||||
|
|
||||||
|
namespace ShadowEngine {
|
||||||
|
|
||||||
|
OutputMemoryStream::OutputMemoryStream(void *data, size_t size)
|
||||||
|
: buffer(static_cast<uint8_t *>(data)), capacity(size), usage(0) {}
|
||||||
|
|
||||||
|
OutputMemoryStream::OutputMemoryStream(ShadowEngine::OutputMemoryStream &&str) noexcept {
|
||||||
|
capacity = str.capacity;
|
||||||
|
buffer = str.buffer;
|
||||||
|
usage = str.usage;
|
||||||
|
|
||||||
|
str.free();
|
||||||
|
}
|
||||||
|
|
||||||
|
void OutputMemoryStream::operator=(ShadowEngine::OutputMemoryStream &&str) noexcept {
|
||||||
|
capacity = str.capacity;
|
||||||
|
buffer = str.buffer;
|
||||||
|
usage = str.usage;
|
||||||
|
|
||||||
|
str.free();
|
||||||
|
}
|
||||||
|
|
||||||
|
void OutputMemoryStream::operator=(const ShadowEngine::OutputMemoryStream &rhs) noexcept {
|
||||||
|
usage = rhs.usage;
|
||||||
|
|
||||||
|
if (rhs.capacity > 0) {
|
||||||
|
buffer = (uint8_t*)malloc(rhs.capacity);
|
||||||
|
memcpy(buffer, rhs.buffer, rhs.capacity);
|
||||||
|
capacity = rhs.capacity;
|
||||||
|
} else {
|
||||||
|
buffer = nullptr;
|
||||||
|
capacity = 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
OutputMemoryStream::OutputMemoryStream(const ShadowEngine::OutputMemoryStream &rhs) noexcept {
|
||||||
|
usage = rhs.usage;
|
||||||
|
|
||||||
|
if (rhs.capacity > 0) {
|
||||||
|
buffer = (uint8_t*)malloc(rhs.capacity);
|
||||||
|
memcpy(buffer, rhs.buffer, rhs.capacity);
|
||||||
|
capacity = rhs.capacity;
|
||||||
|
} else {
|
||||||
|
buffer = nullptr;
|
||||||
|
capacity = 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
OutputMemoryStream::~OutputMemoryStream() = default;
|
||||||
|
|
||||||
|
OutputStream &OutputStream::operator<<(std::string &str) {
|
||||||
|
write(str.data(), str.length());
|
||||||
|
return *this;
|
||||||
|
}
|
||||||
|
|
||||||
|
OutputStream &OutputStream::operator<<(const char* str) {
|
||||||
|
write(str, strlen(str));
|
||||||
|
return *this;
|
||||||
|
}
|
||||||
|
|
||||||
|
OutputStream &OutputStream::operator<<(uint32_t val) {
|
||||||
|
std::string str = std::to_string(val);
|
||||||
|
write(str.c_str(), str.length());
|
||||||
|
return *this;
|
||||||
|
}
|
||||||
|
|
||||||
|
OutputStream &OutputStream::operator<<(int32_t val) {
|
||||||
|
std::string str = std::to_string(val);
|
||||||
|
write(str.c_str(), str.length());
|
||||||
|
return *this;
|
||||||
|
}
|
||||||
|
|
||||||
|
OutputStream &OutputStream::operator<<(uint64_t val) {
|
||||||
|
std::string str = std::to_string(val);
|
||||||
|
write(str.c_str(), str.length());
|
||||||
|
return *this;
|
||||||
|
}
|
||||||
|
|
||||||
|
OutputStream &OutputStream::operator<<(int64_t val) {
|
||||||
|
std::string str = std::to_string(val);
|
||||||
|
write(str.c_str(), str.length());
|
||||||
|
return *this;
|
||||||
|
}
|
||||||
|
|
||||||
|
OutputStream &OutputStream::operator<<(float val) {
|
||||||
|
std::string str = std::to_string(val);
|
||||||
|
write(str.c_str(), str.length());
|
||||||
|
return *this;
|
||||||
|
}
|
||||||
|
|
||||||
|
OutputStream &OutputStream::operator<<(double val) {
|
||||||
|
std::string str = std::to_string(val);
|
||||||
|
write(str.c_str(), str.length());
|
||||||
|
return *this;
|
||||||
|
}
|
||||||
|
|
||||||
|
void OutputMemoryStream::write(std::string &str) {
|
||||||
|
write(str.c_str(), str.length());
|
||||||
|
}
|
||||||
|
|
||||||
|
void *OutputMemoryStream::skip(size_t size) {
|
||||||
|
if (size + usage > capacity) {
|
||||||
|
reserve((size + usage) << 1);
|
||||||
|
}
|
||||||
|
|
||||||
|
void* ret = (uint8_t*)buffer + usage;
|
||||||
|
usage += size;
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
OutputMemoryStream& OutputMemoryStream::operator+=(size_t size) {
|
||||||
|
skip(size);
|
||||||
|
return *this;
|
||||||
|
}
|
||||||
|
|
||||||
|
OutputMemoryStream& OutputMemoryStream::operator++() {
|
||||||
|
skip(1);
|
||||||
|
return *this;
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t OutputMemoryStream::operator[](size_t index) const {
|
||||||
|
return buffer[index];
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t &OutputMemoryStream::operator[](size_t index) {
|
||||||
|
return buffer[index];
|
||||||
|
}
|
||||||
|
|
||||||
|
bool OutputMemoryStream::write(const void *data, size_t size) {
|
||||||
|
if (!size) return true;
|
||||||
|
|
||||||
|
if (usage + size > capacity) {
|
||||||
|
reserve((usage + size) << 1);
|
||||||
|
}
|
||||||
|
|
||||||
|
memcpy((uint8_t*)data + usage, data, size);
|
||||||
|
usage += size;
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
void OutputMemoryStream::clear() { usage = 0; }
|
||||||
|
|
||||||
|
void OutputMemoryStream::free() {
|
||||||
|
usage = 0;
|
||||||
|
capacity = 0;
|
||||||
|
delete[] buffer;
|
||||||
|
buffer = nullptr;
|
||||||
|
}
|
||||||
|
|
||||||
|
void OutputMemoryStream::reserve(size_t size) {
|
||||||
|
if (size < capacity) return;
|
||||||
|
|
||||||
|
auto* temp = static_cast<uint8_t *>(malloc(size));
|
||||||
|
memcpy(temp, buffer, capacity);
|
||||||
|
delete[] buffer;
|
||||||
|
buffer = temp;
|
||||||
|
capacity = size;
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t *OutputMemoryStream::release() {
|
||||||
|
auto* temp = static_cast<uint8_t *>(malloc(usage));
|
||||||
|
memcpy(temp, buffer, usage);
|
||||||
|
free();
|
||||||
|
return temp;
|
||||||
|
}
|
||||||
|
|
||||||
|
InputMemoryStream::InputMemoryStream(const void *data, size_t size)
|
||||||
|
: data(static_cast<const uint8_t *>(data)), capacity(size), position(0) {}
|
||||||
|
|
||||||
|
InputMemoryStream::InputMemoryStream(const ShadowEngine::OutputMemoryStream &blob)
|
||||||
|
: data(blob.data()), capacity(blob.size()), position(0) {}
|
||||||
|
|
||||||
|
void InputMemoryStream::set(const void *newData, size_t size) {
|
||||||
|
data = (uint8_t*) newData; capacity = size; position = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
const void *InputMemoryStream::skip(size_t size) {
|
||||||
|
auto* pos = data + position;
|
||||||
|
position += size;
|
||||||
|
if (position > capacity) {
|
||||||
|
position = capacity;
|
||||||
|
}
|
||||||
|
|
||||||
|
return (const void*) pos;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool InputMemoryStream::read(void *out, size_t size) {
|
||||||
|
if (position + (uint32_t) size > capacity) {
|
||||||
|
for (int32_t i = 0; i < size; i++)
|
||||||
|
((unsigned char*)out)[i] = 0;
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (size) {
|
||||||
|
memcpy(out, ((char*)data) + position, capacity);
|
||||||
|
}
|
||||||
|
|
||||||
|
position += size;
|
||||||
|
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
std::string InputMemoryStream::readString() {
|
||||||
|
const char* ret = (const char*) data + position;
|
||||||
|
while (position < capacity && data[position]) ++position;
|
||||||
|
++position;
|
||||||
|
|
||||||
|
return { ret };
|
||||||
|
}
|
||||||
|
}
|
129
projs/shadow/shadow-engine/shadow-assets/src/fs/iostream.h
Normal file
129
projs/shadow/shadow-engine/shadow-assets/src/fs/iostream.h
Normal file
|
@ -0,0 +1,129 @@
|
||||||
|
#pragma once
|
||||||
|
#include <string>
|
||||||
|
|
||||||
|
namespace ShadowEngine {
|
||||||
|
// A custom OutputStream that can be implemented to output to any arbitrary data structure.
|
||||||
|
// The idea is that it can write to a file, or into memory, or into a temporary buffer that is copied to both.
|
||||||
|
// As opposed to the hardcoded streams that exist in C++, which have a single purpose for their entire lifetime.
|
||||||
|
struct OutputStream {
|
||||||
|
virtual bool write(const void* data, size_t size) = 0;
|
||||||
|
|
||||||
|
OutputStream& operator<< (std::string& str);
|
||||||
|
OutputStream& operator<< (const char* str);
|
||||||
|
OutputStream& operator<< (size_t val);
|
||||||
|
OutputStream& operator<< (int64_t val);
|
||||||
|
OutputStream& operator<< (uint32_t val);
|
||||||
|
OutputStream& operator<< (int32_t val);
|
||||||
|
OutputStream& operator<< (float val);
|
||||||
|
OutputStream& operator<< (double val);
|
||||||
|
template <class T> bool write(const T& val);
|
||||||
|
};
|
||||||
|
|
||||||
|
// A custom InputStream that can be implemented to read from any arbitrary data structure.
|
||||||
|
// The idea is that it can read from a file, or from memory, or from a temporary buffer that is merged from both.
|
||||||
|
// As opposed to the hardcoded streams that exist in C++, which have a single purpose for their entire lifetime.
|
||||||
|
struct InputStream {
|
||||||
|
virtual bool read(void* buffer, size_t size) = 0;
|
||||||
|
virtual const void* getBuffer() const = 0;
|
||||||
|
virtual size_t size() const = 0;
|
||||||
|
|
||||||
|
template <class T> void read(T& val) { read(&val, sizeof(T)); }
|
||||||
|
template <class T> T read();
|
||||||
|
};
|
||||||
|
|
||||||
|
// A custom OutputStream that writes to memory.
|
||||||
|
struct OutputMemoryStream final : OutputStream {
|
||||||
|
|
||||||
|
OutputMemoryStream(void* data, size_t size);
|
||||||
|
OutputMemoryStream(OutputMemoryStream&& str) noexcept;
|
||||||
|
OutputMemoryStream(const OutputMemoryStream& rhs) noexcept;
|
||||||
|
~OutputMemoryStream();
|
||||||
|
|
||||||
|
void operator= (const OutputMemoryStream& rhs) noexcept;
|
||||||
|
void operator= (OutputMemoryStream&& rhs) noexcept;
|
||||||
|
|
||||||
|
uint8_t operator[] (size_t index) const;
|
||||||
|
uint8_t& operator[] (size_t index);
|
||||||
|
OutputMemoryStream& operator+= (size_t index);
|
||||||
|
OutputMemoryStream& operator++ ();
|
||||||
|
|
||||||
|
bool write(const void* data, size_t size) override;
|
||||||
|
|
||||||
|
uint8_t* release();
|
||||||
|
void resize(size_t size);
|
||||||
|
void reserve(size_t size);
|
||||||
|
const uint8_t* data() const { return buffer; };
|
||||||
|
uint8_t* dataMut() { return buffer; };
|
||||||
|
size_t size() const { return usage; };
|
||||||
|
void clear();
|
||||||
|
void* skip(size_t size);
|
||||||
|
bool empty() const { return usage == 0; };
|
||||||
|
void free();
|
||||||
|
|
||||||
|
void write(std::string& str);
|
||||||
|
template <class T> void write(const T& val);
|
||||||
|
|
||||||
|
private:
|
||||||
|
uint8_t* buffer;
|
||||||
|
size_t capacity;
|
||||||
|
size_t usage;
|
||||||
|
};
|
||||||
|
|
||||||
|
template <class T> void OutputMemoryStream::write(const T& val){
|
||||||
|
write(&val, sizeof(T));
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
template <> inline void OutputMemoryStream::write<bool>(const bool& val) {
|
||||||
|
uint8_t v = val;
|
||||||
|
write(&v, sizeof(v));
|
||||||
|
}
|
||||||
|
|
||||||
|
struct InputMemoryStream final : InputStream {
|
||||||
|
InputMemoryStream(const void* data, size_t size);
|
||||||
|
explicit InputMemoryStream(const OutputMemoryStream& blob);
|
||||||
|
|
||||||
|
void set(const void* data, size_t size);
|
||||||
|
bool read(void* data, size_t size) override;
|
||||||
|
std::string readString();
|
||||||
|
const void* skip(size_t size);
|
||||||
|
const void* getData() const { return data; };
|
||||||
|
const void* getBuffer() const override { return data; };
|
||||||
|
size_t size() const override { return capacity; };
|
||||||
|
size_t pos() const { return position; };
|
||||||
|
void setPos(size_t pos) { position = pos; };
|
||||||
|
void restart() { position = 0; };
|
||||||
|
uint8_t readChar() { position++; return data[position-1]; };
|
||||||
|
|
||||||
|
template<class T>
|
||||||
|
T getAs() const {
|
||||||
|
static_assert(position + sizeof(T) < capacity);
|
||||||
|
return *(T*)(data + position);
|
||||||
|
}
|
||||||
|
|
||||||
|
using InputStream::read;
|
||||||
|
|
||||||
|
private:
|
||||||
|
const uint8_t* data;
|
||||||
|
size_t capacity;
|
||||||
|
size_t position;
|
||||||
|
};
|
||||||
|
|
||||||
|
template <class T>
|
||||||
|
T InputStream::read() {
|
||||||
|
T v;
|
||||||
|
read(&v, sizeof(T));
|
||||||
|
return v;
|
||||||
|
}
|
||||||
|
|
||||||
|
template<> inline bool InputStream::read<bool>() {
|
||||||
|
uint8_t v;
|
||||||
|
read(&v, sizeof(bool));
|
||||||
|
return v;
|
||||||
|
}
|
||||||
|
|
||||||
|
template <class T>
|
||||||
|
bool OutputStream::write(const T &val) {
|
||||||
|
return write(&val, sizeof(T));
|
||||||
|
}
|
||||||
|
}
|
117
projs/shadow/shadow-engine/shadow-assets/src/fs/path.cpp
Normal file
117
projs/shadow/shadow-engine/shadow-assets/src/fs/path.cpp
Normal file
|
@ -0,0 +1,117 @@
|
||||||
|
#include <fs/path.h>
|
||||||
|
#include <string.h>
|
||||||
|
#include <str/string.h>
|
||||||
|
|
||||||
|
namespace ShadowEngine {
|
||||||
|
|
||||||
|
Path::Path() : path {} { }
|
||||||
|
|
||||||
|
Path::Path(const std::string &str) {
|
||||||
|
set(normalise((std::string&) str));
|
||||||
|
}
|
||||||
|
|
||||||
|
void Path::set(const std::string &str) {
|
||||||
|
#ifdef _WIN32
|
||||||
|
std::string temp = Str::toLower((std::string&) str);
|
||||||
|
hash = PathHash(temp);
|
||||||
|
#else
|
||||||
|
hash = PathHash(str);
|
||||||
|
#endif
|
||||||
|
path = str;
|
||||||
|
}
|
||||||
|
|
||||||
|
void Path::operator=(const std::string &rhs) {
|
||||||
|
set(rhs);
|
||||||
|
}
|
||||||
|
|
||||||
|
bool Path::operator==(const std::string &rhs) {
|
||||||
|
return path == rhs;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool Path::operator==(const ShadowEngine::Path &rhs) {
|
||||||
|
return path == rhs.path;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool Path::operator!=(const ShadowEngine::Path &rhs) {
|
||||||
|
return path != rhs.path;
|
||||||
|
}
|
||||||
|
|
||||||
|
std::string Path::normalise(std::string &str) {
|
||||||
|
bool prevSlash = false;
|
||||||
|
|
||||||
|
std::string temp;
|
||||||
|
const char* path = str.c_str();
|
||||||
|
size_t len = str.length();
|
||||||
|
size_t i = 0;
|
||||||
|
|
||||||
|
// Skip initial stuff.
|
||||||
|
size_t ind = str.find_first_of(":");
|
||||||
|
path += ind;
|
||||||
|
if (path[0] == '.' && (path[1] == '\\' || path[1] == '/'))
|
||||||
|
path += 2;
|
||||||
|
#ifdef _WIN32
|
||||||
|
if (path[0] == '\\' || path[0] == '/')
|
||||||
|
++path;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
while (*path != '\0' && i < len) {
|
||||||
|
bool slash = *path == '\\' || *path == '/';
|
||||||
|
|
||||||
|
// Skip double slashes.
|
||||||
|
if (slash && prevSlash) {
|
||||||
|
path++; continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Convert backslashes to forward slashes.
|
||||||
|
temp.append(std::to_string(*path == '\\' ? '/' : *path));
|
||||||
|
|
||||||
|
path++; i++; prevSlash = slash;
|
||||||
|
}
|
||||||
|
|
||||||
|
return temp;
|
||||||
|
}
|
||||||
|
|
||||||
|
std::string Path::getPrelude(std::string &path) {
|
||||||
|
return path.substr(0, path.find_first_of(":"));
|
||||||
|
}
|
||||||
|
|
||||||
|
std::string Path::getDomain(std::string &path) {
|
||||||
|
return path.substr(path.find_first_of(":"), path.find_first_of("/"));
|
||||||
|
}
|
||||||
|
|
||||||
|
std::string Path::getDirectory(std::string &path) {
|
||||||
|
return path.substr(path.find_first_of(":"), path.find_last_of("/"));
|
||||||
|
}
|
||||||
|
|
||||||
|
std::string Path::getFilename(std::string &path) {
|
||||||
|
return path.substr(path.find_last_of("/"), path.find_last_of("."));
|
||||||
|
}
|
||||||
|
|
||||||
|
std::string Path::getExtension(std::string &path) {
|
||||||
|
return path.substr(path.find_last_of("."), path.length());
|
||||||
|
}
|
||||||
|
|
||||||
|
std::string Path::replaceExtension(std::string &path, std::string &newExt) {
|
||||||
|
return path.substr(0, path.length() - newExt.length()).append(newExt);
|
||||||
|
}
|
||||||
|
|
||||||
|
bool Path::hasExtension(std::string &path, std::string &ext) {
|
||||||
|
return path.find_last_of(ext) == path.length() - ext.length();
|
||||||
|
}
|
||||||
|
|
||||||
|
PathInfo::PathInfo(std::string &str) {
|
||||||
|
std::string normalised = Path::normalise(str);
|
||||||
|
|
||||||
|
std::string preludeS = Path::getPrelude(normalised);
|
||||||
|
memcpy_s(prelude, 10, preludeS.c_str(), preludeS.length());
|
||||||
|
std::string domainS = Path::getDomain(normalised);
|
||||||
|
memcpy_s(domain, 256, domainS.c_str(), domainS.length());
|
||||||
|
std::string directoryS = Path::getDirectory(normalised);
|
||||||
|
memcpy_s(directory, 256, directoryS.c_str(), directoryS.length());
|
||||||
|
std::string filenameS = Path::getFilename(normalised);
|
||||||
|
memcpy_s(baseName, 256, filenameS.c_str(), filenameS.length());
|
||||||
|
std::string extensionS = Path::getExtension(normalised);
|
||||||
|
memcpy_s(extension, 10, extensionS.c_str(), extensionS.length());
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
66
projs/shadow/shadow-engine/shadow-assets/src/fs/path.h
Normal file
66
projs/shadow/shadow-engine/shadow-assets/src/fs/path.h
Normal file
|
@ -0,0 +1,66 @@
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <string>
|
||||||
|
#include <fs/hash.h>
|
||||||
|
|
||||||
|
namespace ShadowEngine {
|
||||||
|
/**
|
||||||
|
* Stores split data about a path, for easy referencing and decomposition.
|
||||||
|
* Not to be used as a replacement for the Path class.
|
||||||
|
*/
|
||||||
|
struct PathInfo {
|
||||||
|
explicit PathInfo(std::string& str);
|
||||||
|
|
||||||
|
char extension[10];
|
||||||
|
char baseName[256];
|
||||||
|
char directory[256];
|
||||||
|
char domain[256];
|
||||||
|
char prelude[10];
|
||||||
|
};
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Stores and handles paths in the VFS.
|
||||||
|
* All operations are copy-instantiated, nothing works in-place.
|
||||||
|
* A typical path is of the form:
|
||||||
|
* prelude:/domain/directory/filename.extension
|
||||||
|
*/
|
||||||
|
struct Path {
|
||||||
|
// Make sure the path is valid.
|
||||||
|
// Always from the root.
|
||||||
|
// One slash separating.
|
||||||
|
static std::string normalise(std::string& path);
|
||||||
|
// Get the prelude of the given path.
|
||||||
|
static std::string getPrelude(std::string& path);
|
||||||
|
// Get the domain of the given path.
|
||||||
|
static std::string getDomain(std::string& path);
|
||||||
|
// Get the directory of the given path.
|
||||||
|
static std::string getDirectory(std::string& path);
|
||||||
|
// Get the name of the file of the given path.
|
||||||
|
static std::string getFilename(std::string& path);
|
||||||
|
// Get the file extension of the given path.
|
||||||
|
static std::string getExtension(std::string& path);
|
||||||
|
// Check if the path has the given extension.
|
||||||
|
static bool hasExtension(std::string& path, std::string& ext);
|
||||||
|
// Replace the extension of the given path.
|
||||||
|
static std::string replaceExtension(std::string& path, std::string& newExt);
|
||||||
|
|
||||||
|
Path();
|
||||||
|
explicit Path(const std::string& str);
|
||||||
|
|
||||||
|
void operator=(const std::string& rhs);
|
||||||
|
bool operator==(const std::string& rhs);
|
||||||
|
bool operator==(const Path& rhs);
|
||||||
|
bool operator!=(const Path& rhs);
|
||||||
|
|
||||||
|
// Use this to set a new value into the path; it handles the hash too.
|
||||||
|
void set(const std::string& path);
|
||||||
|
|
||||||
|
uint32_t length() const { return path.length(); };
|
||||||
|
PathHash getHash() { return hash; }
|
||||||
|
const char* c_str() const { return path.data(); }
|
||||||
|
bool isEmpty() const { return path.length() == 0; }
|
||||||
|
private:
|
||||||
|
std::string path;
|
||||||
|
PathHash hash;
|
||||||
|
};
|
||||||
|
}
|
182
projs/shadow/shadow-engine/shadow-assets/src/fs/xxhash.h
Normal file
182
projs/shadow/shadow-engine/shadow-assets/src/fs/xxhash.h
Normal file
|
@ -0,0 +1,182 @@
|
||||||
|
#pragma once
|
||||||
|
#include <stdint.h> // for uint32_t and uint64_t
|
||||||
|
|
||||||
|
class XXHash64
|
||||||
|
{
|
||||||
|
public:
|
||||||
|
/// create new XXHash (64 bit)
|
||||||
|
/** @param seed your seed value, even zero is a valid seed **/
|
||||||
|
explicit XXHash64(uint64_t seed)
|
||||||
|
{
|
||||||
|
state[0] = seed + Prime1 + Prime2;
|
||||||
|
state[1] = seed + Prime2;
|
||||||
|
state[2] = seed;
|
||||||
|
state[3] = seed - Prime1;
|
||||||
|
bufferSize = 0;
|
||||||
|
totalLength = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/// add a chunk of bytes
|
||||||
|
/** @param input pointer to a continuous block of data
|
||||||
|
@param length number of bytes
|
||||||
|
@return false if parameters are invalid / zero **/
|
||||||
|
bool add(const void* input, uint64_t length)
|
||||||
|
{
|
||||||
|
// no data ?
|
||||||
|
if (!input || length == 0)
|
||||||
|
return false;
|
||||||
|
|
||||||
|
totalLength += length;
|
||||||
|
// byte-wise access
|
||||||
|
const unsigned char* data = (const unsigned char*)input;
|
||||||
|
|
||||||
|
// unprocessed old data plus new data still fit in temporary buffer ?
|
||||||
|
if (bufferSize + length < MaxBufferSize)
|
||||||
|
{
|
||||||
|
// just add new data
|
||||||
|
while (length-- > 0)
|
||||||
|
buffer[bufferSize++] = *data++;
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
// point beyond last byte
|
||||||
|
const unsigned char* stop = data + length;
|
||||||
|
const unsigned char* stopBlock = stop - MaxBufferSize;
|
||||||
|
|
||||||
|
// some data left from previous update ?
|
||||||
|
if (bufferSize > 0)
|
||||||
|
{
|
||||||
|
// make sure temporary buffer is full (16 bytes)
|
||||||
|
while (bufferSize < MaxBufferSize)
|
||||||
|
buffer[bufferSize++] = *data++;
|
||||||
|
|
||||||
|
// process these 32 bytes (4x8)
|
||||||
|
process(buffer, state[0], state[1], state[2], state[3]);
|
||||||
|
}
|
||||||
|
|
||||||
|
// copying state to local variables helps optimizer A LOT
|
||||||
|
uint64_t s0 = state[0], s1 = state[1], s2 = state[2], s3 = state[3];
|
||||||
|
// 32 bytes at once
|
||||||
|
while (data <= stopBlock)
|
||||||
|
{
|
||||||
|
// local variables s0..s3 instead of state[0]..state[3] are much faster
|
||||||
|
process(data, s0, s1, s2, s3);
|
||||||
|
data += 32;
|
||||||
|
}
|
||||||
|
// copy back
|
||||||
|
state[0] = s0; state[1] = s1; state[2] = s2; state[3] = s3;
|
||||||
|
|
||||||
|
// copy remainder to temporary buffer
|
||||||
|
bufferSize = stop - data;
|
||||||
|
for (uint64_t i = 0; i < bufferSize; i++)
|
||||||
|
buffer[i] = data[i];
|
||||||
|
|
||||||
|
// done
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
/// get current hash
|
||||||
|
/** @return 64 bit XXHash **/
|
||||||
|
uint64_t hash() const
|
||||||
|
{
|
||||||
|
// fold 256 bit state into one single 64 bit value
|
||||||
|
uint64_t result;
|
||||||
|
if (totalLength >= MaxBufferSize)
|
||||||
|
{
|
||||||
|
result = rotateLeft(state[0], 1) +
|
||||||
|
rotateLeft(state[1], 7) +
|
||||||
|
rotateLeft(state[2], 12) +
|
||||||
|
rotateLeft(state[3], 18);
|
||||||
|
result = (result ^ processSingle(0, state[0])) * Prime1 + Prime4;
|
||||||
|
result = (result ^ processSingle(0, state[1])) * Prime1 + Prime4;
|
||||||
|
result = (result ^ processSingle(0, state[2])) * Prime1 + Prime4;
|
||||||
|
result = (result ^ processSingle(0, state[3])) * Prime1 + Prime4;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
// internal state wasn't set in add(), therefore original seed is still stored in state2
|
||||||
|
result = state[2] + Prime5;
|
||||||
|
}
|
||||||
|
|
||||||
|
result += totalLength;
|
||||||
|
|
||||||
|
// process remaining bytes in temporary buffer
|
||||||
|
const unsigned char* data = buffer;
|
||||||
|
// point beyond last byte
|
||||||
|
const unsigned char* stop = data + bufferSize;
|
||||||
|
|
||||||
|
// at least 8 bytes left ? => eat 8 bytes per step
|
||||||
|
for (; data + 8 <= stop; data += 8)
|
||||||
|
result = rotateLeft(result ^ processSingle(0, *(uint64_t*)data), 27) * Prime1 + Prime4;
|
||||||
|
|
||||||
|
// 4 bytes left ? => eat those
|
||||||
|
if (data + 4 <= stop)
|
||||||
|
{
|
||||||
|
result = rotateLeft(result ^ (*(uint32_t*)data) * Prime1, 23) * Prime2 + Prime3;
|
||||||
|
data += 4;
|
||||||
|
}
|
||||||
|
|
||||||
|
// take care of remaining 0..3 bytes, eat 1 byte per step
|
||||||
|
while (data != stop)
|
||||||
|
result = rotateLeft(result ^ (*data++) * Prime5, 11) * Prime1;
|
||||||
|
|
||||||
|
// mix bits
|
||||||
|
result ^= result >> 33;
|
||||||
|
result *= Prime2;
|
||||||
|
result ^= result >> 29;
|
||||||
|
result *= Prime3;
|
||||||
|
result ^= result >> 32;
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/// combine constructor, add() and hash() in one static function (C style)
|
||||||
|
/** @param input pointer to a continuous block of data
|
||||||
|
@param length number of bytes
|
||||||
|
@param seed your seed value, e.g. zero is a valid seed
|
||||||
|
@return 64 bit XXHash **/
|
||||||
|
static uint64_t hash(const void* input, uint64_t length, uint64_t seed)
|
||||||
|
{
|
||||||
|
XXHash64 hasher(seed);
|
||||||
|
hasher.add(input, length);
|
||||||
|
return hasher.hash();
|
||||||
|
}
|
||||||
|
|
||||||
|
private:
|
||||||
|
/// magic constants :-)
|
||||||
|
static const uint64_t Prime1 = 11400714785074694791ULL;
|
||||||
|
static const uint64_t Prime2 = 14029467366897019727ULL;
|
||||||
|
static const uint64_t Prime3 = 1609587929392839161ULL;
|
||||||
|
static const uint64_t Prime4 = 9650029242287828579ULL;
|
||||||
|
static const uint64_t Prime5 = 2870177450012600261ULL;
|
||||||
|
|
||||||
|
/// temporarily store up to 31 bytes between multiple add() calls
|
||||||
|
static const uint64_t MaxBufferSize = 31+1;
|
||||||
|
|
||||||
|
uint64_t state[4];
|
||||||
|
unsigned char buffer[MaxBufferSize];
|
||||||
|
uint64_t bufferSize;
|
||||||
|
uint64_t totalLength;
|
||||||
|
|
||||||
|
/// rotate bits, should compile to a single CPU instruction (ROL)
|
||||||
|
static inline uint64_t rotateLeft(uint64_t x, unsigned char bits)
|
||||||
|
{
|
||||||
|
return (x << bits) | (x >> (64 - bits));
|
||||||
|
}
|
||||||
|
|
||||||
|
/// process a single 64 bit value
|
||||||
|
static inline uint64_t processSingle(uint64_t previous, uint64_t input)
|
||||||
|
{
|
||||||
|
return rotateLeft(previous + input * Prime2, 31) * Prime1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/// process a block of 4x4 bytes, this is the main part of the XXHash32 algorithm
|
||||||
|
static inline void process(const void* data, uint64_t& state0, uint64_t& state1, uint64_t& state2, uint64_t& state3)
|
||||||
|
{
|
||||||
|
const uint64_t* block = (const uint64_t*) data;
|
||||||
|
state0 = processSingle(state0, block[0]);
|
||||||
|
state1 = processSingle(state1, block[1]);
|
||||||
|
state2 = processSingle(state2, block[2]);
|
||||||
|
state3 = processSingle(state3, block[3]);
|
||||||
|
}
|
||||||
|
};
|
|
@ -0,0 +1,77 @@
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <cstdint>
|
||||||
|
|
||||||
|
#ifdef __linux__
|
||||||
|
#include <pthread.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
namespace ShadowEngine {
|
||||||
|
// A simple synchronization system that allows one "accessing thread" at a time.
|
||||||
|
struct alignas(8) Mutex {
|
||||||
|
friend struct ConditionVariable;
|
||||||
|
Mutex();
|
||||||
|
Mutex(const Mutex&) = delete;
|
||||||
|
~Mutex();
|
||||||
|
|
||||||
|
void enter();
|
||||||
|
void exit();
|
||||||
|
private:
|
||||||
|
#ifdef _WIN32
|
||||||
|
uint8_t data[8];
|
||||||
|
#else
|
||||||
|
pthread_mutex_t mutex;
|
||||||
|
#endif
|
||||||
|
};
|
||||||
|
|
||||||
|
// A simple synchronization system that allows many threads to wait for one thread to complete an operation.
|
||||||
|
struct Semaphore {
|
||||||
|
Semaphore(int initcount, int maxcount);
|
||||||
|
Semaphore(const Semaphore&) = delete;
|
||||||
|
~Semaphore();
|
||||||
|
|
||||||
|
void raise();
|
||||||
|
void wait();
|
||||||
|
private:
|
||||||
|
#ifdef _WIN32
|
||||||
|
void* id;
|
||||||
|
#else
|
||||||
|
struct {
|
||||||
|
pthread_mutex_t mutex;
|
||||||
|
pthread_mutex_cond cond;
|
||||||
|
volatile int32_t count;
|
||||||
|
} id;
|
||||||
|
#endif
|
||||||
|
};
|
||||||
|
|
||||||
|
struct ConditionVariable {
|
||||||
|
ConditionVariable();
|
||||||
|
ConditionVariable(const ConditionVariable&) = delete;
|
||||||
|
~ConditionVariable();
|
||||||
|
|
||||||
|
void sleep(Mutex& mut);
|
||||||
|
void wake();
|
||||||
|
|
||||||
|
private:
|
||||||
|
#ifdef _WIN32
|
||||||
|
uint8_t data[64];
|
||||||
|
#else
|
||||||
|
pthread_cond_t cond;
|
||||||
|
#endif
|
||||||
|
};
|
||||||
|
|
||||||
|
// A simple RAII wrapper for Mutexes, that locks and unlocks as the Guard goes in and out of scope.
|
||||||
|
struct MutexGuard {
|
||||||
|
explicit MutexGuard(Mutex& mut) : mut(mut) {
|
||||||
|
mut.enter();
|
||||||
|
}
|
||||||
|
|
||||||
|
~MutexGuard() { mut.exit(); }
|
||||||
|
|
||||||
|
MutexGuard(const MutexGuard&) = delete;
|
||||||
|
void operator=(const MutexGuard&) = delete;
|
||||||
|
|
||||||
|
private:
|
||||||
|
Mutex& mut;
|
||||||
|
};
|
||||||
|
}
|
11
projs/shadow/shadow-engine/shadow-assets/src/str/string.cpp
Normal file
11
projs/shadow/shadow-engine/shadow-assets/src/str/string.cpp
Normal file
|
@ -0,0 +1,11 @@
|
||||||
|
#include <str/string.h>
|
||||||
|
|
||||||
|
namespace ShadowEngine::Str {
|
||||||
|
std::string toLower(const std::string& str) {
|
||||||
|
std::string temp;
|
||||||
|
for (auto c : str) {
|
||||||
|
temp.append(std::to_string(tolower(c)));
|
||||||
|
}
|
||||||
|
return temp;
|
||||||
|
}
|
||||||
|
}
|
12
projs/shadow/shadow-engine/shadow-assets/src/str/string.h
Normal file
12
projs/shadow/shadow-engine/shadow-assets/src/str/string.h
Normal file
|
@ -0,0 +1,12 @@
|
||||||
|
#pragma once
|
||||||
|
#include <string>
|
||||||
|
|
||||||
|
namespace ShadowEngine {
|
||||||
|
// String manipluation utilities.
|
||||||
|
// Because std::string is heavily lacking.
|
||||||
|
namespace Str {
|
||||||
|
// Convert the string to lower case, return a new string.
|
||||||
|
// This only works in ASCII encoding.
|
||||||
|
std::string toLower(std::string& str);
|
||||||
|
}
|
||||||
|
}
|
Loading…
Reference in New Issue
Block a user