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%{
#include <string>
%}
%fragment("SwigStrInOut", "header") {
class SwigStrInOut {
std::string str_;
char* ptr_;
size_t len_;
public:
void init(char* ptr) {
ptr_ = ptr;
if (ptr_) {
str_ = ptr_;
len_ = str_.length();
}
}
std::string* str() { return &str_; }
~SwigStrInOut() {
if (ptr_) {
memcpy(ptr_, str_.c_str(), len_);
ptr_[len_] = '\0';
}
}
};
}
%fragment("include_string", "cxxheader") %{
#include <string>
%}
namespace std {
// use "const string &" typemaps for wrapping member strings
%naturalvar string;
class string;
%typemap(ctype) string, const string & "const char *"
%typemap(ctype) string * "char *"
%typemap(ctype) string & "char *"
%typemap(in) string %{
if ($input)
$1 = $input;
%}
%typemap(in) const string & (std::string temp) %{
if ($input)
temp = $input;
$1 = &temp;
%}
%typemap(in, fragment="SwigStrInOut") string * (SwigStrInOut temp), string & (SwigStrInOut temp) %{
temp.init($input);
$1 = temp.str();
%}
// Note that we don't support strings with embedded NULs, as there is no way to
// return their length to C code anyhow.
%typemap(out) string %{
$result = strdup(cppresult.c_str());
%}
%typemap(out) const string &, string *, string & %{
$result = strdup(cppresult->c_str());
%}
// This is required to warn about clashes between the overloaded functions
// taking strings and raw pointers in the generated wrappers.
%typemap(typecheck) string, const string &, string *, string & = char *;
// Define typemaps for wrapping strings back into std::string in C++ wrappers
// and accepting strings directly.
%typemap(cxxintype, fragment="include_string") string, const string & "std::string const&"
%typemap(cxxin) string, const string & "$1.c_str()"
%typemap(cxxouttype, fragment="include_string") string, const string & "std::string"
%typemap(cxxout, noblock="1") string, const string & %{
$result = std::string($cresult);
free(const_cast<char*>($cresult));
%}
}
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