On Wed, Jan 14, 2004 at 10:02:54PM +0800, Tony Yat-Tung Cheung wrote:
> Hi,
>
> Is there any API for iterating GHashTable?
>
> I only see the the g_hash_table_foreach() here. But sometimes people may
> like to iterate through a hash table and stop the iteration when certain
> conditions are met.
>
> Currently, there is g_hash_table_size(), we could easily add iteration
> by providing the following two new APIs,
>
> gconstpointer g_hash_table_get_key(GHashTable *hash_table, int pos);
> gconspointer g_hash_table_get_value(GHashTable *hash_table, int pos);
>
> The two APIs allows one to iterate the hash table, for example,
>
> for (i = 0; i < g_hash_table_size(hash_table); i++) {
> gconstpointer value = g_hash_table_get_value(hash_table, i);
>
> /* Do some processing here */
> if (is_match(value))
> return TRUE;
> }
>
> Should we add the APIs?
I made something similar, but for GData:
typedef struct _GQDPair GQDPair;
struct _GQDPair
{
GQuark quark;
gpointer data;
};
GArray * g_datalist_pairs(GArray *a, GData **dl);
#define GQDq(qp, i) g_array_index(qp, GQDPair, i).quark
#define GQDd(qp, i) g_array_index(qp, GQDPair, i).data
/* GQuark/gpointer pairs from GDataList ------------------------ */
void
on_keyval2GArray(GQuark key, gpointer *data, GArray *a)
{
GQDPair p;
p.quark = key;
p.data = data;
g_array_append_val(a, p);
}
GArray *
g_datalist_pairs(GArray *a, GData **dl)
{
if (a)
{
g_array_set_size(a, 0);
}
else
a = g_array_new(TRUE, FALSE, sizeof(GQDPair));
g_datalist_foreach(dl, (GDataForeachFunc)on_keyval2GArray, a);
return a;
}
bajcik
--
Krzysztof Garus <bajcik.kolos.math.uni.lodz@pl> Linux User 171721
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