Implement string::copy and string_view::copy

include/mtl/string.hpp

@@ -151,7 +151,14 @@ public:
 	template <typename T>
 	istring& replace(const_iterator first, const_iterator last, T first2, T last2);
 
-	size_t copy(char* dest, size_t count, size_t pos = 0) const;
+	/**
+	 * \brief Copy the string to a buffer
+	 *
+	 * Copies the string to the buffer pointed to by dest. Will always
+	 * copy the string from front to back, never in reverse. The strings
+	 * must not overlap.
+	 */
+	size_t copy(char* dest, size_t count = npos, size_t pos = 0) const;
 
 	void resize(size_t count);
 	void resize(size_t count, char ch);

include/mtl/string_view.hpp

@@ -56,7 +56,14 @@ public:
 	constexpr size_t size() const { return m_size; }
 	constexpr size_t length() const { return m_size; }
 
-	size_t copy(char* dest, size_t count, size_t pos = 0) const;
+	/**
+	 * \brief Copy the string to a buffer
+	 *
+	 * Copies the string to the buffer pointed to by dest. Will always
+	 * copy the string from front to back, never in reverse. The strings
+	 * must not overlap.
+	 */
+	size_t copy(char* dest, size_t count = npos, size_t pos = 0) const;
 
 	// Search
 	

src/string.cpp

@@ -213,6 +213,11 @@ istring& istring::insert(size_t index, const istring& str) {
 	return *this;
 }
 
+size_t istring::copy(char* dest, size_t count, size_t pos) const {
+	mtl_hybridcpy(dest, m_str + pos, count);
+	return count;
+}
+
 string_ext::string_ext(char* buf, size_t buf_size) : istring(buf, buf_size - 1, 0) {}
 
 

src/string_view.cpp

@@ -9,4 +9,13 @@ string_view::string_view(const istring& str)
 string_view::string_view(const istring& str, size_t size)
 	: m_str(str.c_str()), m_size(size) {}
 
+size_t string_view::copy(char* dest, size_t count, size_t pos) const {
+	if (count == npos) {
+		count = m_size - pos;
+	}
+
+	mtl_hybridcpy(dest, m_str + pos, count);
+	return count;
+}
+
 } // namespace mtl