move to new cspot

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

@@ -0,0 +1,70 @@
+#include "FileStream.h"
+
+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;
+    }
+}