Add ToStdString and ToStdStringView to ZeekString

src/Val.cc

@@ -782,11 +782,9 @@ const char* StringVal::CheckString() const { return string_val->CheckString(); }
 
 std::pair<const char*, size_t> StringVal::CheckStringWithSize() const { return string_val->CheckStringWithSize(); }
 
-string StringVal::ToStdString() const { return {(char*)string_val->Bytes(), static_cast<size_t>(string_val->Len())}; }
+string StringVal::ToStdString() const { return string_val->ToStdString(); }
 
-string_view StringVal::ToStdStringView() const {
+string_view StringVal::ToStdStringView() const { return string_val->ToStdStringView(); }
-    return {(char*)string_val->Bytes(), static_cast<size_t>(string_val->Len())};
-}
 
 StringVal* StringVal::ToUpper() {
     string_val->ToUpper();

src/ZeekString.cc

@@ -177,6 +177,10 @@ std::pair<const char*, size_t> String::CheckStringWithSize() const {
 
 const char* String::CheckString() const { return CheckStringWithSize().first; }
 
+std::string String::ToStdString() const { return {(char*)Bytes(), static_cast<size_t>(Len())}; }
+
+std::string_view String::ToStdStringView() const { return {(char*)Bytes(), static_cast<size_t>(Len())}; }
+
 char* String::Render(int format, int* len) const {
     // Maximum character expansion is as \xHH, so a factor of 4.
     char* s = new char[n * 4 + 1]; // +1 is for final '\0'

src/ZeekString.h

@@ -91,6 +91,17 @@ public:
      */
     std::pair<const char*, size_t> CheckStringWithSize() const;
 
+    /**
+     * Returns the string data as a std::string. This makes a copy of the
+     * string data.
+     */
+    std::string ToStdString() const;
+
+    /**
+     * Returns the string data as a std::string_view.
+     */
+    std::string_view ToStdStringView() const;
+
     enum render_style {
         ESC_NONE = 0,
         ESC_ESC = (1 << 1),  // '\' -> "\\"