From 24bb0db16d2fcd94a5919f616dd9a50b3a131752 Mon Sep 17 00:00:00 2001
From: Steven Le Rouzic <steven.lerouzic@gmail.com>
Date: Thu, 4 Apr 2024 16:08:55 +0200
Subject: Add io Writer

---
 deimos/core/BUILD        |  1 +
 deimos/core/base.h       |  7 +++++++
 deimos/core/io.h         | 21 +++++++++++++++++++++
 deimos/core/os.h         | 19 ++++++++++++++++++-
 deimos/core/os_win32.cpp |  2 +-
 5 files changed, 48 insertions(+), 2 deletions(-)
 create mode 100644 deimos/core/io.h

(limited to 'deimos/core')

diff --git a/deimos/core/BUILD b/deimos/core/BUILD
index d004aae..fd20796 100644
--- a/deimos/core/BUILD
+++ b/deimos/core/BUILD
@@ -7,6 +7,7 @@ cc_library(
         "gsl.h",
         "hash.h",
         "id_name.h",
+        "io.h",
         "os.h",
         "std.h",
     ],
diff --git a/deimos/core/base.h b/deimos/core/base.h
index c3b0d87..8295053 100644
--- a/deimos/core/base.h
+++ b/deimos/core/base.h
@@ -85,5 +85,12 @@ public:
     constexpr int64_t size() const { return m_size; }
 };
 
+template<typename T>
+inline Span<const std::byte> AsBytes(Span<T> span)
+{
+    // NOLINTNEXTLINE
+    return { reinterpret_cast<const std::byte*>(span.data()), span.size() * (int64_t)sizeof(T) };
+}
+
 } // namespace deimos
 
diff --git a/deimos/core/io.h b/deimos/core/io.h
new file mode 100644
index 0000000..90caadc
--- /dev/null
+++ b/deimos/core/io.h
@@ -0,0 +1,21 @@
+#pragma once
+
+#include "deimos/core/base.h"
+
+namespace deimos
+{
+
+class IWriter
+{
+public:
+    IWriter() = default;
+
+    deimos_NO_COPY_MOVE(IWriter);
+
+    virtual ~IWriter() = default;
+
+    virtual void Write(Span<const std::byte>) = 0;
+};
+
+} // namespace deimos
+
diff --git a/deimos/core/os.h b/deimos/core/os.h
index 95b662b..88b1c55 100644
--- a/deimos/core/os.h
+++ b/deimos/core/os.h
@@ -2,6 +2,7 @@
 
 #include "deimos/core/base.h"
 #include "deimos/core/id_name.h"
+#include "deimos/core/io.h"
 
 namespace deimos
 {
@@ -21,7 +22,7 @@ public:
 
     virtual ~OsConsoleApi() = default;
 
-    virtual void Write(OsConsoleType, Span<const char> data) = 0;
+    virtual void Write(OsConsoleType, Span<const std::byte> data) = 0;
 };
 
 class OsApi
@@ -32,5 +33,21 @@ public:
     OsConsoleApi* console{};
 };
 
+class OsConsoleWriter : public IWriter
+{
+    OsConsoleApi*       m_api;
+    OsConsoleType       m_type;
+
+public:
+    constexpr OsConsoleWriter(OsConsoleApi* api, OsConsoleType type) :
+        m_api{api}, m_type{type}
+    {}
+
+    constexpr void Write(Span<const std::byte> data) override
+    {
+        m_api->Write(m_type, data);
+    }
+};
+
 } // namespace deimos
 
diff --git a/deimos/core/os_win32.cpp b/deimos/core/os_win32.cpp
index fbc75c4..ca608d8 100644
--- a/deimos/core/os_win32.cpp
+++ b/deimos/core/os_win32.cpp
@@ -29,7 +29,7 @@ public:
         m_stderr{::GetStdHandle(STD_ERROR_HANDLE)}
     {}
 
-    void Write(OsConsoleType type, Span<const char> data) override
+    void Write(OsConsoleType type, Span<const std::byte> data) override
     {
         ::WriteConsoleA(Handle(type), data.data(), (DWORD)data.size(), nullptr, nullptr);
     }
-- 
cgit