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vfs_vector: Add VectorVfsFile
Maps a vector into the VFS interface.
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@ -7,6 +7,57 @@
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#include "core/file_sys/vfs_vector.h"
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namespace FileSys {
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VectorVfsFile::VectorVfsFile(std::vector<u8> initial_data, std::string name, VirtualDir parent)
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: data(std::move(initial_data)), name(std::move(name)), parent(std::move(parent)) {}
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std::string VectorVfsFile::GetName() const {
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return name;
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}
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size_t VectorVfsFile::GetSize() const {
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return data.size();
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}
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bool VectorVfsFile::Resize(size_t new_size) {
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data.resize(new_size);
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return data.size() == new_size;
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}
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std::shared_ptr<VfsDirectory> VectorVfsFile::GetContainingDirectory() const {
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return parent;
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}
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bool VectorVfsFile::IsWritable() const {
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return true;
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}
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bool VectorVfsFile::IsReadable() const {
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return true;
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}
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size_t VectorVfsFile::Read(u8* data_, size_t length, size_t offset) const {
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const auto read = std::min(length, data.size() - offset);
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std::memcpy(data_, data.data() + offset, read);
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return read;
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}
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size_t VectorVfsFile::Write(const u8* data_, size_t length, size_t offset) {
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if (offset + length > data.size())
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data.resize(offset + length);
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const auto write = std::min(length, data.size() - offset);
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std::memcpy(data.data(), data_, write);
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return write;
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}
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bool VectorVfsFile::Rename(std::string_view name_) {
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name = name_;
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return true;
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}
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void VectorVfsFile::Assign(std::vector<u8> new_data) {
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data = new_data;
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}
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VectorVfsDirectory::VectorVfsDirectory(std::vector<VirtualFile> files_,
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std::vector<VirtualDir> dirs_, std::string name_,
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VirtualDir parent_)
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@ -8,6 +8,30 @@
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namespace FileSys {
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// An implementation of VfsFile that is backed by a vector optionally supplied upon construction
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class VectorVfsFile : public VfsFile {
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public:
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explicit VectorVfsFile(std::vector<u8> initial_data = {}, std::string name = "",
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VirtualDir parent = nullptr);
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std::string GetName() const override;
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size_t GetSize() const override;
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bool Resize(size_t new_size) override;
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std::shared_ptr<VfsDirectory> GetContainingDirectory() const override;
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bool IsWritable() const override;
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bool IsReadable() const override;
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size_t Read(u8* data, size_t length, size_t offset) const override;
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size_t Write(const u8* data, size_t length, size_t offset) override;
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bool Rename(std::string_view name) override;
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virtual void Assign(std::vector<u8> new_data);
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private:
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std::vector<u8> data;
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VirtualDir parent;
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std::string name;
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};
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// An implementation of VfsDirectory that maintains two vectors for subdirectories and files.
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// Vector data is supplied upon construction.
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class VectorVfsDirectory : public VfsDirectory {
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