Re: [pdf-devel] File system Definition Functions

[jemarch]

Hi David.

   Is there any reason to we have got the `pdf_fsys_create' procedure?
   It is supposed do:

    -- Function: pdf_fsys_t pdf_fsys_create (struct pdf_fsys_impl_s 
IMPLEMENTATION)

        Create and return a new filesystem variable that will use a given
        implementation.

   which copy the `pdf_fsys_impl_s' structure.

   I think we could assume pdf_fsys_t is a pointer to pdf_fsys_impl_s
   (rename pdf_fsys_impl_s to pdf_fsys_s), in order to the library can
   provide PDF_FSYS_DISK, PDF_FSYS_HTTP, etc, to use as pdf_fsys_t
   directly.

The rationale after the existence of that function, and also after the
existence of two different types pdf_fsys_t and pdf_fsys_impl_s, is
that pdf_fsys_t is intended to be opaque.  We may want to expand its
definition to hold data not related to an specific implementation.

---
Jose E. Marchesi    address@hidden
GNU Project         http://www.gnu.org