Re: [xml] How to treat an xmlBuffer's content to free later?

[Daniel Veillard <veillard redhat com>]

On Mon, Jan 21, 2002 at 10:48:09PM -0500, Thomas Gagne wrote:
> I need to return the content to PHP, which will want to free the memory I send
> it.  What is the best way to fashion a pointer to the buffer's contents, or a
> copy of the contents, so that it appears to be a string that can be freed by
> the caller?
>
> Is it enough to "return xmlBufferContent(buf);"? Or should I instead:
>
>      string = calloc(xmlBufferLength(buf), 1);
>      memcpy(string, xmlBufferContent(buf), xmlBufferLength(buf));
>      xmlBufferFree(buf);
>      return string;

  yes

> or how about:
>
>          string = xmlStrdup(xmlBufferContent(buf));
>          xmlBufferFree(buf);
>          return string;

  wrong, string would point to an unallocated piece of memory
  I have updated xmlBufferFree()' doc to clarify it,

Daniel

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