124 lines
2.5 KiB
C++
124 lines
2.5 KiB
C++
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#include "./stacked.hpp"
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#include <algorithm>
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namespace mijin
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{
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//
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// internal defines
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//
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//
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// internal constants
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//
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//
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// internal types
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//
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//
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// internal variables
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//
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//
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// internal functions
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//
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//
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// public functions
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//
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fs::path StackedFileSystemAdapter::getHomeFolder()
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{
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if (adapters_.empty()) {
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return fs::path();
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}
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return adapters_.front()->getHomeFolder();
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}
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std::vector<FileInfo> StackedFileSystemAdapter::listFiles(const fs::path& folder)
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{
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std::vector<FileInfo> files;
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for (auto& adapter : adapters_)
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{
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for (const FileInfo& file : adapter->listFiles(folder))
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{
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auto it = std::find_if(files.begin(), files.end(), [&](const FileInfo& existing)
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{
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return existing.path == file.path;
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});
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if (it == files.end()) {
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files.push_back(file);
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}
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}
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}
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return files;
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}
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FileInfo StackedFileSystemAdapter::getFileInfo(const fs::path& file)
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{
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for (auto& adapter : adapters_)
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{
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FileInfo fileInfo = adapter->getFileInfo(file);
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if (fileInfo.exists) {
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return fileInfo;
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}
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}
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return {};
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}
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Optional<fs::path> StackedFileSystemAdapter::getNativePath(const fs::path& file)
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{
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for (auto& adapter : adapters_)
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{
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Optional<fs::path> result = adapter->getNativePath(file);
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if (!result.empty())
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{
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return result;
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}
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}
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return NULL_OPTIONAL;
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}
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StreamError StackedFileSystemAdapter::open(const fs::path& path, FileOpenMode mode, std::unique_ptr<Stream>& outStream)
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{
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// try to open existing files first
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for (auto& adapter : adapters_)
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{
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const FileInfo fileInfo = adapter->getFileInfo(path);
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if (fileInfo.exists)
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{
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return adapter->open(path, mode, outStream);
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}
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}
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// if that doesn't work we attempt to write, try creating it
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if (mode == FileOpenMode::WRITE || mode == FileOpenMode::READ_WRITE)
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{
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for (auto& adapter : adapters_)
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{
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const StreamError error = adapter->open(path, mode, outStream);
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if (error == StreamError::SUCCESS)
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{
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return StreamError::SUCCESS;
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}
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}
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}
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return StreamError::IO_ERROR;
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}
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void StackedFileSystemAdapter::getAllPaths(const fs::path& path, std::vector<PathReference>& outPaths)
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{
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for (auto& adapter : adapters_)
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{
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adapter->getAllPaths(path, outPaths);
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}
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}
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} // namespace mijin
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