#ifndef STRINGSTORAGE_HH

#define STRINGSTORAGE_HH

#include <algorithm>

#include <cstdlib>

#include <memory>

#include <string_view>

/** StringStorage:

 * Acts like a 'const char*', but in addition calls free() when the pointer

 * goes out of scope.

 */

struct FreeStringStorage

{

	void operator()(char* p) const { free(p); }

};

using StringStorage = std::unique_ptr<char, FreeStringStorage>;

/** Allocate a 'StringStorage' large enough for 'size' characters.

  */

inline StringStorage allocate_string_storage(size_t size)

{

	return StringStorage(static_cast<char*>(malloc(size)));

}

/** Allocate memory for and copy a c-string (zero-terminated string).

  * This function is similar to strdup(), except that this function:

  * - takes a 'string_view' instead of a 'const char*' parameter.

  * - returns a 'StringStorage' instead of 'char*'.

  */

inline StringStorage allocate_c_string(std::string_view s)

{

	auto result = allocate_string_storage(s.size() + 1);

	char* p = result.get();

	char* z = std::ranges::copy(s, p).out;

	*z = '\0';

	return result;

}

#endif