gopy/_examples/cpkg/cpkg.go

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// Copyright 2015 The go-python Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cpkg
//#include <stdio.h>
//#include <string.h>
//#include <stdlib.h>
//void hello(const char *str) {
// fprintf(stdout, str);
//}
import "C"
import (
"fmt"
"unsafe"
)
// Hello prints a string via C's stdio
func Hello(s string) {
if s == "" {
s = "you"
}
cstr := C.CString(fmt.Sprintf("hello %s from C\n", s))
defer C.free(unsafe.Pointer(cstr))
C.hello(cstr)
}