I do this:
// convert a v8::String to a (char*) -- any call to this should later be free'd
static inline char *TO_CHAR(Handle<Value> val) {
String::Utf8Value utf8(val->ToString());
int len = utf8.length() + 1;
char *str = (char *) calloc(sizeof(char), len);
strncpy(str, *utf8, len);
return str;
}
Then, anywhere in your code, you can do this:
char *x = TO_CHAR(v8_str);
printf("%s", x);
free(x);
-Ken
On Sun, Jan 29, 2012 at 6:30 PM, Ben Noordhuis <[email protected]> wrote:
> On Mon, Jan 30, 2012 at 00:22, Mark Volkmann <[email protected]>
> wrote:
>> Is this the best way to get a C string from a Local<Value> that is really a
>> Local<String>?
>>
>> if (value->IsString()) {
>> String::Utf8Value utfStr(value);
>> char* s = (char*) *utfStr;
>> }
>
> Depends on what you do with s, it becomes a dangling pointer the
> moment utfStr goes out of scope. Otherwise it's fine.
>
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