Use owning strings for transpile inputs and flags

Agent-Logs-Url: https://github.com/Cpp2Rust/cpp2rust/sessions/b35e24ce-b7f8-4f5a-97dd-80c8f5f18730

Co-authored-by: nunoplopes <2998477+nunoplopes@users.noreply.github.com>

Author: Copilot

cpp2rust/cpp2rust.cpp

@@ -140,7 +140,7 @@ int main(int argc, char *argv[]) {
     }
   }
 
-  std::vector<std::string_view> cxx_flags(CXXFlags.begin(), CXXFlags.end());
+  std::vector<std::string> cxx_flags(CXXFlags.begin(), CXXFlags.end());
 
   if (RulesDir.empty() && !ResolveRulesDir()) {
     llvm::errs() << "ERROR: rules directory not found. "

cpp2rust/cpp2rust_lib.cpp

@@ -11,8 +11,8 @@
 #include "frontend_action.h"
 
 namespace cpp2rust {
-std::string TranspileSrc(std::string_view cc_code, Model model,
-                         const std::vector<std::string_view> &cxx_flags,
+std::string TranspileSrc(const std::string &cc_code, Model model,
+                         const std::vector<std::string> &cxx_flags,
                          const std::string &rules_dir) {
   auto tool_args = getPlatformClangFlags();
   tool_args.push_back("-fparse-all-comments");
@@ -25,7 +25,7 @@ std::string TranspileSrc(std::string_view cc_code, Model model,
   return rs_code;
 }
 
-std::string TranspileDir(std::string_view build_dir, Model model,
+std::string TranspileDir(const std::string &build_dir, Model model,
                          const std::string &rules_dir) {
   std::string error_message;
   auto compile_dbase = clang::tooling::CompilationDatabase::loadFromDirectory(

cpp2rust/cpp2rust_lib.h

@@ -10,10 +10,10 @@
 
 namespace cpp2rust {
 
-std::string TranspileSrc(std::string_view cc_code, Model model,
-                         const std::vector<std::string_view> &cxx_flags,
+std::string TranspileSrc(const std::string &cc_code, Model model,
+                         const std::vector<std::string> &cxx_flags,
                          const std::string &rules_dir);
-std::string TranspileDir(std::string_view build_dir, Model model,
+std::string TranspileDir(const std::string &build_dir, Model model,
                          const std::string &rules_dir);
 
 } // namespace cpp2rust