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make vips_object_get_args() return an int

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since malloc can fail
This commit is contained in:
John Cupitt 2018-08-20 08:45:46 +01:00
parent 30cb95e6e7
commit fec2f5f869
2 changed files with 17 additions and 10 deletions
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2
libvips/include/vips/object.h
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@ -302,7 +302,7 @@ typedef void *(*VipsArgumentMapFn)( VipsObject *object, GParamSpec *pspec,
VipsArgumentInstance *argument_instance, void *a, void *b );
void *vips_argument_map( VipsObject *object,
VipsArgumentMapFn fn, void *a, void *b );
void vips_object_get_args( VipsObject *object,
int vips_object_get_args( VipsObject *object,
const char ***names, int **flags, int *n_args );
typedef void *(*VipsArgumentClassMapFn)( VipsObjectClass *object_class,
GParamSpec *pspec,

25
libvips/iofuncs/object.c
View File

@ -2236,29 +2236,34 @@ vips_object_find_args( VipsObject *object,
/**
* vips_object_get_args: (skip)
* @object: object whose args should be retrieved
* @names: (out)(array length=n_args): output array of GParamSpec names
* @flags: (out)(array length=n_args): output array of VipsArgumentFlags
* @n_args: length of output arrays
* @names: (transfer none) (array length=n_args) (allow-none): output array of %GParamSpec names
* @flags: (transfer none) (array length=n_args) (allow-none): output array of #VipsArgumentFlags
* @n_args: (allow-none): length of output arrays
*
* Get all GParamSpec names and VipsArgumentFlags for an object.
* Get all %GParamSpec names and #VipsArgumentFlags for an object.
*
* This is handy for language bindings. From C, it's usually more convenient to
* use vips_argument_map().
*
* Returns: 0 on success, -1 on error
*/
void
int
vips_object_get_args( VipsObject *object,
const char ***names, int **flags, int *n_args)
const char ***names, int **flags, int *n_args )
{
VipsObjectClass *object_class = VIPS_OBJECT_GET_CLASS( object );
int n = g_slist_length( object_class->argument_table_traverse );
VipsNameFlagsPair pair;
int i;
pair.names = VIPS_ARRAY( object, n, const char * );
pair.flags = VIPS_ARRAY( object, n, int );
if( !pair.names ||
!pair.flags )
return( -1 );
int i = 0;
i = 0;
(void) vips_argument_map( object,
vips_object_find_args, &pair, &i );
@ -2268,6 +2273,8 @@ vips_object_get_args( VipsObject *object,
*flags = pair.flags;
if( n_args )
*n_args = n;
return( 0 );
}
/**