comment on

Once I start, I can't stop ;-)
I still don't know how to deal with:

struct _Edje_Message_String_Set
{
   int count;
   char * str[];
};
[download]

Is it possible to handle that ?

However, for:

struct _Edje_Message_String_Set
{
   int count;
   char ** str;
};
[download]

I have:

# struct_char.pl #
use strict;
use warnings;

use Inline C => Config =>
  BUILD_NOISY => 1,
  CLEAN_AFTER_BUILD => 0,
  USING => 'ParseRegExp',
;

use Inline C => <<'EOC';

struct _Edje_Message_String_Set
{
   int count;
   char ** str;
};

typedef struct _Edje_Message_String_Set EdjeMessageStringSet;

void struct_size(void) {
  printf("Size of _Edje_Message_String_Set struct: %d\n",
         sizeof(EdjeMessageStringSet) );
}

EdjeMessageStringSet * _new(AV * val_arr) {
  EdjeMessageStringSet *message;
  int i;
  SV ** elem;

  Newx(message, 1, EdjeMessageStringSet);
  if(message == NULL)
    croak("Failed to allocate memory in _new function");

  message->count = av_len(val_arr) + 1;
  Newx(message->str, message->count, char*);

  for(i = 0; i < message->count; i++) {
    elem = av_fetch(val_arr, i, 0);
    message->str[i] = SvPV_nolen(*elem);
  }

  return message;
}

void _iterate(EdjeMessageStringSet * strs) {
  int i;

  for(i = 0; i < strs->count; i++) {
    printf("%s\n", strs->str[i]);  
  }
}

void DESTROY(EdjeMessageStringSet * x) {
  Safefree(x->str);
  printf("Safefreed EdjeMessageStringSet object->str\n");
  Safefree(x);
  printf("Safefreed EdjeMessageStringSet object\n");
}

void foo(AV * arref) {
  EdjeMessageStringSet *m;
  m = _new(arref);
  _iterate(m);
  DESTROY(m);
}

EOC

struct_size();
my @in = ("hello foo", "hello bar","hello world", "goodbye", '1', '2',
+ '3');

# The XSub foo() will create a new EdjeMessageStringSet object
# using _new(), then pass that object to _iterate() which
# prints out all of the strings contained in the object.
# Finally, foo() calls DESTROY() which frees the memory that
# was assigned to create the EdjeMessageStringSet object.
foo(\@in);
[download]

Which (after compiling) outputs:

Size of _Edje_Message_String_Set struct: 16
hello foo
hello bar
hello world
goodbye
1
2
3
Safefreed EdjeMessageStringSet object->str
Safefreed EdjeMessageStringSet object
[download]

Cheers,
Rob

In reply to Re^6: Perl XS binding to a struct with an array of chars* by syphilis
in thread Perl XS binding to a struct with an array of chars* by MaxPerl

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