applied platformio structure

lib/spotify/cspot/bell/main/io/FileStream.cpp

@@ -0,0 +1,61 @@
+#include "FileStream.h"
+
+#include <stdexcept>  // for runtime_error
+
+#include "BellLogger.h"  // for bell
+
+using namespace bell;
+
+FileStream::FileStream(const std::string& path, std::string read) {
+  file = fopen(path.c_str(), "rb");
+  if (file == NULL) {
+    throw std::runtime_error("Could not open file: " + path);
+  }
+}
+
+FileStream::~FileStream() {
+  close();
+}
+
+size_t FileStream::read(uint8_t* buf, size_t nbytes) {
+  if (file == NULL) {
+    throw std::runtime_error("Stream is closed");
+  }
+
+  return fread(buf, 1, nbytes, file);
+}
+
+size_t FileStream::skip(size_t nbytes) {
+  if (file == NULL) {
+    throw std::runtime_error("Stream is closed");
+  }
+
+  return fseek(file, nbytes, SEEK_CUR);
+}
+
+size_t FileStream::position() {
+  if (file == NULL) {
+    throw std::runtime_error("Stream is closed");
+  }
+
+  return ftell(file);
+}
+
+size_t FileStream::size() {
+  if (file == NULL) {
+    throw std::runtime_error("Stream is closed");
+  }
+
+  size_t pos = ftell(file);
+  fseek(file, 0, SEEK_END);
+  size_t size = ftell(file);
+  fseek(file, pos, SEEK_SET);
+  return size;
+}
+
+void FileStream::close() {
+  if (file != NULL) {
+    fclose(file);
+    file = NULL;
+  }
+}