/**
* call-seq:
* read(device=nil)
*
* Read the disc ID from the given device.
*
* If no device is given the default device of the platform will be used.
* Throws an _Exception_ if the CD's TOC can not be read.
*
* Raises:: ArgumentError, TypeError, Exception
*/
static VALUE mb_discid_read(int argc, VALUE *argv, VALUE self)
{
DiscId *disc; /* Pointer to the disc struct */
VALUE device = Qnil; /* The device string as a Ruby string */
char* cdevice; /* The device string as a C string */
Data_Get_Struct(self, DiscId, disc);
/* Check the number and types of arguments */
rb_scan_args(argc, argv, "01", &device);
/* Use the default device if none was given. */
if (device == Qnil)
cdevice = discid_get_default_device();
else if (rb_respond_to(device, rb_intern("to_s")))
{
device = rb_funcall(device, rb_intern("to_s"), 0, 0);
cdevice = StringValuePtr(device);
}
else
rb_raise(rb_eTypeError, "wrong argument type (expected String)");
/* Mark the disc id as unread in case something goes wrong. */
rb_iv_set(self, "@read", Qfalse);
/* Read the discid */
if (discid_read(disc, cdevice) == 0)
rb_raise(rb_eException, discid_get_error_msg(disc));
else /* Remember that we already read the ID. */
rb_iv_set(self, "@read", Qtrue);
return Qnil;
}
int discid_read_sparse(DiscId *d, const char *device, unsigned int features) {
mb_disc_private *disc = (mb_disc_private *) d;
assert( disc != NULL );
if ( device == NULL )
device = discid_get_default_device();
assert( device != NULL );
/* Necessary, because the disc handle could have been used before. */
memset(disc, 0, sizeof(mb_disc_private));
return disc->success = mb_disc_read_unportable(disc, device, features);
}
int main(int argc, char *argv[]) {
DiscId *d;
char *features[DISCID_FEATURE_LENGTH];
char *feature;
int i, found_features, invalid;
int result;
announce("discid_get_version_string");
evaluate(strlen(discid_get_version_string()) > 0);
announce("discid_get_feature_list");
discid_get_feature_list(features);
found_features = 0;
invalid = 0;
for (i = 0; i < DISCID_FEATURE_LENGTH; i++) {
feature = features[i];
if (feature) {
found_features++;
if (!feature_consistent(feature)) {
invalid++;
}
}
}
evaluate(!invalid && found_features ==
discid_has_feature(DISCID_FEATURE_READ)
+ discid_has_feature(DISCID_FEATURE_MCN)
+ discid_has_feature(DISCID_FEATURE_ISRC));
announce("discid_get_default_device");
/* this doesn't test much, but shouldn't fail completely
* TODO: make sure there is always something > 0 returned
*/
evaluate(strlen(discid_get_default_device()) >= 0);
/* TODO
* test access with/without initialization doesn't fail
*/
announce("discid_new");
d = discid_new();
evaluate(d != NULL);
announce("giving invalid device");
result = discid_read(d, "invalid_device_name");
evaluate(!result);
announce("discid_get_error_msg");
/* depending on result from invalid read
* If that fails, it still is only one failure.*/
if (result) {
evaluate(strlen(discid_get_error_msg(d)) == 0);
} else {
evaluate(strlen(discid_get_error_msg(d)) > 0);
}
/*
announce("empty values");
evaluate(discid_get_id(d) == NULL);
*/
/* TODO
* This needs implementation.
* Right now we get segmentation faults in debug builds (assert)
* and have to test for NULL in release builds.
announce("empty values");
evaluate(strlen(discid_get_id(d)) == 0
&& strlen(discid_get_freedb_id(d)) == 0
&& strlen(discid_get_submission_url(d)) == 0
&& strlen(discid_get_mcn(d)) == 0
&& discid_get_first_track_num(d) == 0
&& discid_get_last_track_num(d) == 0
&& discid_get_sectors(d) == 0);
*/
announce("discid_free");
discid_free(d);
evaluate(1); /* only segfaults etc. would "show" */
return !test_result();
}
