Replace logvisor with spdlog

lib/IFileIO.cpp

@@ -0,0 +1,48 @@
+#include "nod/IFileIO.hpp"
+#include "Util.hpp"
+#include <spdlog/spdlog.h>
+
+namespace nod {
+uint64_t IFileIO::IWriteStream::copyFromDisc(IPartReadStream& discio, uint64_t length) {
+  uint64_t read = 0;
+  uint8_t buf[0x7c00];
+  while (length) {
+    uint64_t thisSz = nod::min(uint64_t(0x7c00), length);
+    uint64_t readSz = discio.read(buf, thisSz);
+    if (thisSz != readSz) {
+      spdlog::error("unable to read enough from disc");
+      return read;
+    }
+    if (write(buf, readSz) != readSz) {
+      spdlog::error("unable to write in file");
+      return read;
+    }
+    length -= thisSz;
+    read += thisSz;
+  }
+  return read;
+}
+
+uint64_t IFileIO::IWriteStream::copyFromDisc(IPartReadStream& discio, uint64_t length,
+                                             const std::function<void(float)>& prog) {
+  uint64_t read = 0;
+  uint8_t buf[0x7c00];
+  uint64_t total = length;
+  while (length) {
+    uint64_t thisSz = nod::min(uint64_t(0x7c00), length);
+    uint64_t readSz = discio.read(buf, thisSz);
+    if (thisSz != readSz) {
+      spdlog::error("unable to read enough from disc");
+      return read;
+    }
+    if (write(buf, readSz) != readSz) {
+      spdlog::error("unable to write in file");
+      return read;
+    }
+    length -= thisSz;
+    read += thisSz;
+    prog(read / float(total));
+  }
+  return read;
+}
+} // namespace nod