A helper to iterate over unsafe pointers.
go get -u github.com/danielgatis/go-ptrloopAnd then import the package in your code:
import "github.com/danielgatis/go-ptrloop/ptrloop"An example described below is one of the use cases.
package main
/*
#include <stdlib.h>
#include <strings.h>
char** createArray(int n) {
char** array = (char **) malloc(n * sizeof(char *));
for (int i = 0; i < n; ++i) {
array[i] = strdup("hello!");
}
return array;
}
*/
import "C"
import (
"fmt"
"unsafe"
"github.com/danielgatis/go-ptrloop/ptrloop"
)
func main() {
n := 3
array := C.createArray(C.int(n))
ptrloop.Loop(unsafe.Pointer(array), int(n), func(ptr unsafe.Pointer, i int) bool {
s := *(**C.char)(ptr)
fmt.Printf("%v -> %v\n", i, C.GoString(s))
return true
})
}❯ go run main.go
0 -> hello!
1 -> hello!
2 -> hello!
Copyright (c) 2020-present Daniel Gatis
Licensed under MIT License