Files
crosspoint-reader/lib/hal/HalStorage.h
Justin Mitchell 9220e5a301 Refactor plugin discovery with structured scanning
Replace inline findPluginDir with scanPlugins() that returns structured Entry objects containing plugin metadata (plugin.js, device.json, manifest.json markers). This centralizes plugin discovery logic and provides a single source of truth for what constitutes a valid plugin across all roots.
2026-08-10 20:32:12 -04:00

106 lines
3.5 KiB
C++

#pragma once
#include <Print.h>
#include <common/FsApiConstants.h> // for oflag_t
#include <freertos/semphr.h>
#include <memory>
#include <string>
#include <vector>
class HalFile;
class HalStorage {
public:
HalStorage();
bool begin();
bool ready() const;
std::vector<String> listFiles(const char* path = "/", int maxFiles = 200);
// Read the entire file at `path` into a String. Returns empty string on failure.
String readFile(const char* path);
// Low-memory helpers:
// Stream the file contents to a `Print` (e.g. `Serial`, or any `Print`-derived object).
// Returns true on success, false on failure.
bool readFileToStream(const char* path, Print& out, size_t chunkSize = 256);
// Read up to `bufferSize-1` bytes into `buffer`, null-terminating it. Returns bytes read.
size_t readFileToBuffer(const char* path, char* buffer, size_t bufferSize, size_t maxBytes = 0);
// Read the whole file at `path` into `out`. Fails (without allocating) on
// missing, directory, empty, above-`cap`, or short-read files.
bool readFileToString(const char* moduleName, const std::string& path, size_t cap, std::string& out);
// Write a string to `path` on the SD card. Overwrites existing file.
// Returns true on success.
bool writeFile(const char* path, const String& content);
// Ensure a directory exists, creating it if necessary. Returns true on success.
bool ensureDirectoryExists(const char* path);
HalFile open(const char* path, const oflag_t oflag = O_RDONLY);
bool mkdir(const char* path, const bool pFlag = true);
bool exists(const char* path);
bool remove(const char* path);
bool rename(const char* oldPath, const char* newPath);
bool rmdir(const char* path);
bool openFileForRead(const char* moduleName, const char* path, HalFile& file);
bool openFileForRead(const char* moduleName, const std::string& path, HalFile& file);
bool openFileForRead(const char* moduleName, const String& path, HalFile& file);
bool openFileForWrite(const char* moduleName, const char* path, HalFile& file);
bool openFileForWrite(const char* moduleName, const std::string& path, HalFile& file);
bool openFileForWrite(const char* moduleName, const String& path, HalFile& file);
bool removeDir(const char* path);
static HalStorage& getInstance() { return instance; }
class StorageLock; // private class, used internally
private:
static HalStorage instance;
bool initialized = false;
SemaphoreHandle_t storageMutex = nullptr;
};
#define Storage HalStorage::getInstance()
class HalFile : public Print {
friend class HalStorage;
class Impl;
std::unique_ptr<Impl> impl;
explicit HalFile(std::unique_ptr<Impl> impl);
public:
HalFile();
~HalFile();
HalFile(HalFile&&);
HalFile& operator=(HalFile&&);
HalFile(const HalFile&) = delete;
HalFile& operator=(const HalFile&) = delete;
void flush();
size_t getName(char* name, size_t len);
size_t size();
size_t fileSize();
uint64_t fileSize64();
bool seek(size_t pos);
bool seek64(uint64_t pos);
bool seekCur(int64_t offset);
bool seekSet(size_t offset);
int available() const;
size_t position() const;
int read(void* buf, size_t count);
int read(); // read a single byte
size_t write(const void* buf, size_t count);
size_t write(uint8_t b) override;
bool rename(const char* newPath);
bool isDirectory() const;
void rewindDirectory();
bool close();
HalFile openNextFile();
bool isOpen() const;
operator bool() const;
};
// Downstream code must use Storage instead of SdMan
#ifdef SdMan
#undef SdMan
#endif