Re: [pdf-devel] Hash module API

[jemarch]

   Ok. I have written a first version for the Hash Module API. 
   Also added the Arch entry on the wiki page.

Thanks.

I would add the following functions:

 `pdf_bool_t pdf_hash_key_p (hash_table, key)'

     Return PDF_TRUE if there is an entry in HASH_TABLE with key KEY.

 `pdf_size_t pdf_hash_num_entries (hash_table)'

     Return the number of entries in HASH_TABLE.

 `pdf_status_t pdf_hash_rename (hash_table, key, new_key)'

     Rename KEY to NEW_KEY in HASH_TABLE.

 `pdf_status_t pdf_hash_mapkeys (hash_table,
                                 pdf_hash_mapkeys_fn_t func,
                                 void *client_data)'

     Apply FUNC to each element contained in HASH_TABLE. The prototype
     of FUNC should be:

       pdf_status_t func (pdf_hash_t hash_table, char *key, void *client_data)

     FIXME: Should we define an order???
    

   I don't know how the enum "pdf_hash_value_type_e" is going to be
   used yet.

We are not going to use that type, since we are working with generic
pointers to store data into the hash table. The definition of
`pdf_hash_value_type_e' in gnupdf.texi should be deleted.