On Wed, 2012-04-18 at 15:00 +1000, Peter Hutterer wrote:
> Signed-off-by: Peter Hutterer <[email protected]>
> ---
> libwacom/libwacom.c | 56
> +++++++++++++++++++++++++++++++++++++++++++++++++++
> libwacom/libwacom.h | 16 +++++++++++++++
> 2 files changed, 72 insertions(+)
>
> diff --git a/libwacom/libwacom.c b/libwacom/libwacom.c
> index eaf5e2c..c16c104 100644
> --- a/libwacom/libwacom.c
> +++ b/libwacom/libwacom.c
> @@ -222,6 +222,62 @@ libwacom_copy(const WacomDevice *device)
> return d;
> }
>
> +
> +static int
> +compare_matches(const WacomDevice *a, const WacomDevice *b)
> +{
> + /* FIXME: fill this in */
What is this supposed to do?
> + return 0;
> +}
> +
> +int
> +libwacom_compare(const WacomDevice *a, const WacomDevice *b,
> WacomCompareFlags flags)
> +{
> + if ((a && !b) || (b && !a))
> + return 1;
> +
> + if (strcmp(a->name, b->name) != 0)
> + return 1;
> +
> + if (a->width != b->width || a->height != b->height)
> + return 1;
> +
> + if (a->cls != b->cls)
> + return 1;
> +
> + if (a->num_strips != b->num_strips)
> + return 1;
> +
> + if (a->features != b->features)
> + return 1;
> +
> + if (a->strips_num_modes != b->strips_num_modes)
> + return 1;
> +
> + if (a->ring_num_modes != b->ring_num_modes)
> + return 1;
> +
> + if (a->ring2_num_modes != b->ring2_num_modes)
> + return 1;
> +
> + if (a->num_buttons != b->num_buttons)
> + return 1;
> +
> + if (a->num_styli != b->num_styli)
> + return 1;
> +
> + if (memcmp(a->supported_styli, b->supported_styli, sizeof(int) *
> a->num_styli) != 0)
> + return 1;
> +
> + if (memcmp(a->buttons, b->buttons, sizeof(WacomButtonFlags) *
> a->num_buttons) != 0)
> + return 1;
> +
> + if ((flags & WCOMPARE_MATCHES) && compare_matches(a, b) != 0)
> + return 1;
> +
> + return 0;
> +}
> +
> static const WacomDevice *
> libwacom_new (WacomDeviceDatabase *db, int vendor_id, int product_id,
> WacomBusType bus, WacomError *error)
> {
> diff --git a/libwacom/libwacom.h b/libwacom/libwacom.h
> index 11192a4..b3a30ef 100644
> --- a/libwacom/libwacom.h
> +++ b/libwacom/libwacom.h
> @@ -167,6 +167,11 @@ typedef enum {
> WFALLBACK_GENERIC = 1
> } WacomFallbackFlags;
>
> +typedef enum {
> + WCOMPARE_NORMAL = 0, /**< compare the device only */
> + WCOMPARE_MATCHES = (1 << 1), /**< compare all possible
> matches too */
> +} WacomCompareFlags;
> +
> /**
> * Allocate a new structure for error reporting.
> *
> @@ -290,6 +295,17 @@ void libwacom_print_device_description (FILE *file,
> WacomDevice *device);
> void libwacom_destroy(WacomDevice *device);
>
> /**
> + * Compare the two devices for equal-ness.
> + *
> + * @param a The first device
> + * @param b The second device
> + * @param flags Flags to dictate what constitutes a match
> + *
> + * @return 0 if the devices are identical, nonzero otherwise
> + */
> +int libwacom_compare(const WacomDevice *a, const WacomDevice *b,
> WacomCompareFlags flags);
> +
> +/**
> * @param device The tablet to query
> * @return The class of the device
> */
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