libretro: Implement disk control interface

src/common/string_util.cpp

@@ -1,6 +1,6 @@
 #include "string_util.h"
-#include <cstdio>
 #include <cctype>
+#include <cstdio>
 
 namespace StringUtil {
 
@@ -137,7 +137,23 @@ std::size_t Strlcpy(char* dst, const char* src, std::size_t size)
   else
   {
     std::memcpy(dst, src, size - 1);
-    dst[size] = '\0';
+    dst[size - 1] = '\0';
+  }
+  return len;
+}
+
+std::size_t Strlcpy(char* dst, const std::string_view& src, std::size_t size)
+{
+  std::size_t len = src.length();
+  if (len < size)
+  {
+    std::memcpy(dst, src.data(), len);
+    dst[len] = '\0';
+  }
+  else
+  {
+    std::memcpy(dst, src.data(), size - 1);
+    dst[size - 1] = '\0';
   }
   return len;
 }

src/common/string_util.h

@@ -5,6 +5,7 @@
 #include <cstring>
 #include <optional>
 #include <string>
+#include <string_view>
 
 #if defined(__has_include) && __has_include(<charconv>)
 #include <charconv>
@@ -27,6 +28,9 @@ bool WildcardMatch(const char* subject, const char* mask, bool case_sensitive =
 /// Safe version of strlcpy.
 std::size_t Strlcpy(char* dst, const char* src, std::size_t size);
 
+/// Strlcpy from string_view.
+std::size_t Strlcpy(char* dst, const std::string_view& src, std::size_t size);
+
 /// Platform-independent strcasecmp
 static inline int Strcasecmp(const char* s1, const char* s2)
 {