Import all this stuff into a single repo called Serenity.

1 files changed, 85 insertions, 0 deletions

diff --git a/AK/ByteBuffer.h b/AK/ByteBuffer.h
new file mode 100644
index 0000000000..ee84e2091f
--- /dev/null
+++ b/AK/ByteBuffer.h
@@ -0,0 +1,85 @@
+#pragma once
+
+#include "Buffer.h"
+#include "Types.h"
+#include <cstdlib>
+#include <cstring>
+#include <cstdio>
+
+namespace AK {
+
+class ByteBuffer {
+public:
+    ByteBuffer() { }
+    ByteBuffer(std::nullptr_t) { }
+    ByteBuffer(const ByteBuffer& other)
+        : m_impl(other.m_impl.copyRef())
+    {
+    }
+    ByteBuffer(ByteBuffer&& other)
+        : m_impl(std::move(other.m_impl))
+    {
+    }
+    ByteBuffer& operator=(ByteBuffer&& other)
+    {
+        if (this != &other)
+            m_impl = std::move(other.m_impl);
+        return *this;
+    }
+
+    static ByteBuffer createUninitialized(size_t size) { return ByteBuffer(Buffer<byte>::createUninitialized(size)); }
+    static ByteBuffer copy(const byte* data, size_t size) { return ByteBuffer(Buffer<byte>::copy(data, size)); }
+    static ByteBuffer wrap(byte* data, size_t size) { return ByteBuffer(Buffer<byte>::wrap(data, size)); }
+    static ByteBuffer adopt(byte* data, size_t size) { return ByteBuffer(Buffer<byte>::adopt(data, size)); }
+
+    ~ByteBuffer() { clear(); }
+    void clear() { m_impl = nullptr; }
+
+    operator bool() const { return !isNull(); }
+    bool operator!() const { return isNull(); }
+    bool isNull() const { return m_impl == nullptr; }
+
+    byte& operator[](size_t i) { ASSERT(m_impl); return (*m_impl)[i]; }
+    byte operator[](size_t i) const { ASSERT(m_impl); return (*m_impl)[i]; }
+    bool isEmpty() const { return !m_impl || m_impl->isEmpty(); }
+    size_t size() const { return m_impl ? m_impl->size() : 0; }
+
+    byte* pointer() { return m_impl ? m_impl->pointer() : nullptr; }
+    const byte* pointer() const { return m_impl ? m_impl->pointer() : nullptr; }
+
+    byte* offsetPointer(size_t offset) { return m_impl ? m_impl->offsetPointer(offset) : nullptr; }
+    const byte* offsetPointer(size_t offset) const { return m_impl ? m_impl->offsetPointer(offset) : nullptr; }
+
+    const void* endPointer() const { return m_impl ? m_impl->endPointer() : nullptr; }
+
+    // NOTE: trim() does not reallocate.
+    void trim(size_t size)
+    {
+        if (m_impl)
+            m_impl->trim(size);
+    }
+
+    ByteBuffer slice(size_t offset, size_t size) const
+    {
+        if (isNull())
+            return { };
+        if (offset >= this->size())
+            return { };
+        if (offset + size >= this->size())
+            size = this->size() - offset;
+        return copy(offsetPointer(offset), size);
+    }
+
+private:
+    explicit ByteBuffer(RetainPtr<Buffer<byte>>&& impl)
+        : m_impl(std::move(impl))
+    {
+    }
+
+    RetainPtr<Buffer<byte>> m_impl;
+};
+
+}
+
+using AK::ByteBuffer;
+