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GBytes: add a size argument to g_bytes_get_data

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* An out size argument so that this is more easily bindable
   by gobject-introspection.

https://bugzilla.gnome.org/show_bug.cgi?id=665879
This commit is contained in:
Stef Walter 2011-12-09 18:19:24 +01:00
parent 162bafee37
commit 14fb10d14b
6 changed files with 41 additions and 24 deletions
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8
glib/gbytes.c
View File

@ -212,19 +212,23 @@ g_bytes_new_from_bytes (GBytes *bytes,
/**
* g_bytes_get_data:
* @bytes: a #GBytes
* @size: (out) (allow-none): location to return size of byte data
*
* Get the byte data in the #GBytes. This data should not be modified.
*
* This function will always return the same pointer for a given #GBytes.
*
* Returns: a pointer to the byte data
* Returns: (array length=size) (type guint8): a pointer to the byte data
*
* Since: 2.32
*/
gconstpointer
g_bytes_get_data (GBytes *bytes)
g_bytes_get_data (GBytes *bytes,
gsize *size)
{
g_return_val_if_fail (bytes != NULL, NULL);
if (size)
*size = bytes->size;
return bytes->data;
}

3
glib/gbytes.h
View File

@ -45,7 +45,8 @@ GBytes * g_bytes_new_from_bytes (GBytes *bytes,
gsize offset,
gsize length);
gconstpointer g_bytes_get_data (GBytes *bytes);
gconstpointer g_bytes_get_data (GBytes *bytes,
gsize *size);
gsize g_bytes_get_size (GBytes *bytes);

4
glib/gtimezone.c
View File

@ -395,8 +395,8 @@ g_time_zone_new (const gchar *identifier)
if (tz->zoneinfo != NULL)
{
const struct tzhead *header = g_bytes_get_data (tz->zoneinfo);
gsize size = g_bytes_get_size (tz->zoneinfo);
gsize size;
const struct tzhead *header = g_bytes_get_data (tz->zoneinfo, &size);
/* we only bother to support version 2 */
if (size < sizeof (struct tzhead) || memcmp (header, "TZif2", 5))

5
glib/gvariant-core.c
View File

@ -448,7 +448,7 @@ g_variant_ensure_serialised (GVariant *value)
g_variant_release_children (value);
bytes = g_bytes_new_take (data, value->size);
value->contents.serialised.data = g_bytes_get_data (bytes);
value->contents.serialised.data = g_bytes_get_data (bytes, NULL);
value->contents.serialised.bytes = bytes;
value->state |= STATE_SERIALISED;
}
@ -529,8 +529,7 @@ g_variant_new_from_bytes (const GVariantType *type,
}
else
{
value->contents.serialised.data = g_bytes_get_data (bytes);
value->size = g_bytes_get_size (bytes);
value->contents.serialised.data = g_bytes_get_data (bytes, &value->size);
}
return value;

4
glib/tests/array-test.c
View File

@ -781,6 +781,7 @@ byte_array_free_to_bytes (void)
GByteArray *gbarray;
gpointer memory;
GBytes *bytes;
gsize size;
gbarray = g_byte_array_new ();
g_byte_array_append (gbarray, (guint8 *)"woooweeewow", 11);
@ -789,7 +790,8 @@ byte_array_free_to_bytes (void)
bytes = g_byte_array_free_to_bytes (gbarray);
g_assert (bytes != NULL);
g_assert_cmpuint (g_bytes_get_size (bytes), ==, 11);
g_assert (g_bytes_get_data (bytes) == memory);
g_assert (g_bytes_get_data (bytes, &size) == memory);
g_assert_cmpuint (size, ==, 11);
g_bytes_unref (bytes);
}

41
glib/tests/bytes.c
View File

@ -25,13 +25,15 @@ test_new (void)
{
const gchar *data;
GBytes *bytes;
gsize size;
data = "test";
bytes = g_bytes_new (data, 4);
g_assert (bytes != NULL);
g_assert (g_bytes_get_data (bytes) != data);
g_assert (g_bytes_get_data (bytes, &size) != data);
g_assert_cmpuint (size, ==, 4);
g_assert_cmpuint (g_bytes_get_size (bytes), ==, 4);
g_assert (memcmp (data, g_bytes_get_data (bytes), g_bytes_get_size (bytes)) == 0);
g_assert (memcmp (data, g_bytes_get_data (bytes, NULL), g_bytes_get_size (bytes)) == 0);
g_bytes_unref (bytes);
}
@ -41,11 +43,13 @@ test_new_take (void)
{
gchar *data;
GBytes *bytes;
gsize size;
data = g_strdup ("test");
bytes = g_bytes_new_take (data, 4);
g_assert (bytes != NULL);
g_assert (g_bytes_get_data (bytes) == data);
g_assert (g_bytes_get_data (bytes, &size) == data);
g_assert_cmpuint (size, ==, 4);
g_assert_cmpuint (g_bytes_get_size (bytes), ==, 4);
g_bytes_unref (bytes);
@ -56,11 +60,13 @@ test_new_static (void)
{
const gchar *data;
GBytes *bytes;
gsize size;
data = "test";
bytes = g_bytes_new_static (data, 4);
g_assert (bytes != NULL);
g_assert (g_bytes_get_data (bytes) == data);
g_assert (g_bytes_get_data (bytes, &size) == data);
g_assert_cmpuint (size, ==, 4);
g_assert_cmpuint (g_bytes_get_size (bytes), ==, 4);
g_bytes_unref (bytes);
@ -77,11 +83,11 @@ test_new_from_bytes (void)
sub = g_bytes_new_from_bytes (bytes, 10, 4);
g_assert (sub != NULL);
g_assert (g_bytes_get_data (sub) == ((gchar *)g_bytes_get_data (bytes)) + 10);
g_assert (g_bytes_get_data (sub, NULL) == ((gchar *)g_bytes_get_data (bytes, NULL)) + 10);
g_assert (g_bytes_get_size (sub) == 4);
g_bytes_unref (bytes);
g_assert (memcmp (g_bytes_get_data (sub), "wave", 4) == 0);
g_assert (memcmp (g_bytes_get_data (sub, NULL), "wave", 4) == 0);
g_bytes_unref (sub);
}
@ -99,12 +105,14 @@ test_new_with_free_func (void)
GBytes *bytes;
gchar *data;
gint count = 0;
gsize size;
data = "test";
bytes = g_bytes_new_with_free_func (data, 4, on_destroy_increment, &count);
g_assert (bytes != NULL);
g_assert_cmpint (count, ==, 0);
g_assert (g_bytes_get_data (bytes) == data);
g_assert (g_bytes_get_data (bytes, &size) == data);
g_assert_cmpuint (size, ==, 4);
g_assert_cmpuint (g_bytes_get_size (bytes), ==, 4);
g_bytes_unref (bytes);
@ -201,7 +209,7 @@ test_to_data_transferred (void)
/* Memory transferred: one reference, and allocated with g_malloc */
bytes = g_bytes_new (NYAN, N_NYAN);
memory = g_bytes_get_data (bytes);
memory = g_bytes_get_data (bytes, NULL);
data = g_bytes_unref_to_data (bytes, &size);
g_assert (data == memory);
g_assert_cmpuint (size, ==, N_NYAN);
@ -220,13 +228,14 @@ test_to_data_two_refs (void)
/* Memory copied: two references */
bytes = g_bytes_new (NYAN, N_NYAN);
bytes = g_bytes_ref (bytes);
memory = g_bytes_get_data (bytes);
memory = g_bytes_get_data (bytes, NULL);
data = g_bytes_unref_to_data (bytes, &size);
g_assert (data != memory);
g_assert_cmpuint (size, ==, N_NYAN);
g_assert (memcmp (data, NYAN, N_NYAN) == 0);
g_free (data);
g_assert (g_bytes_get_data (bytes) == memory);
g_assert (g_bytes_get_data (bytes, &size) == memory);
g_assert_cmpuint (size, ==, N_NYAN);
g_assert_cmpuint (g_bytes_get_size (bytes), ==, N_NYAN);
g_bytes_unref (bytes);
}
@ -240,7 +249,7 @@ test_to_data_non_malloc (void)
/* Memory copied: non malloc memory */
bytes = g_bytes_new_static (NYAN, N_NYAN);
g_assert (g_bytes_get_data (bytes) == NYAN);
g_assert (g_bytes_get_data (bytes, NULL) == NYAN);
data = g_bytes_unref_to_data (bytes, &size);
g_assert (data != (gpointer)NYAN);
g_assert_cmpuint (size, ==, N_NYAN);
@ -257,7 +266,7 @@ test_to_array_transferred (void)
/* Memory transferred: one reference, and allocated with g_malloc */
bytes = g_bytes_new (NYAN, N_NYAN);
memory = g_bytes_get_data (bytes);
memory = g_bytes_get_data (bytes, NULL);
array = g_bytes_unref_to_array (bytes);
g_assert (array != NULL);
g_assert (array->data == memory);
@ -272,18 +281,20 @@ test_to_array_two_refs (void)
gconstpointer memory;
GByteArray *array;
GBytes *bytes;
gsize size;
/* Memory copied: two references */
bytes = g_bytes_new (NYAN, N_NYAN);
bytes = g_bytes_ref (bytes);
memory = g_bytes_get_data (bytes);
memory = g_bytes_get_data (bytes, NULL);
array = g_bytes_unref_to_array (bytes);
g_assert (array != NULL);
g_assert (array->data != memory);
g_assert_cmpuint (array->len, ==, N_NYAN);
g_assert (memcmp (array->data, NYAN, N_NYAN) == 0);
g_byte_array_unref (array);
g_assert (g_bytes_get_data (bytes) == memory);
g_assert (g_bytes_get_data (bytes, &size) == memory);
g_assert_cmpuint (size, ==, N_NYAN);
g_assert_cmpuint (g_bytes_get_size (bytes), ==, N_NYAN);
g_bytes_unref (bytes);
}
@ -296,7 +307,7 @@ test_to_array_non_malloc (void)
/* Memory copied: non malloc memory */
bytes = g_bytes_new_static (NYAN, N_NYAN);
g_assert (g_bytes_get_data (bytes) == NYAN);
g_assert (g_bytes_get_data (bytes, NULL) == NYAN);
array = g_bytes_unref_to_array (bytes);
g_assert (array != NULL);
g_assert (array->data != (gpointer)NYAN);