int
ln(const char *s1, const char *s2)
{
int (*flink)(const char *, const char *) = sflag ? symlink : link;
if(flink(s1, s2) == 0)
return 0;
if(fflag && errno == EEXIST) {
if(remove(s2) == -1)
eprintf("remove %s:", s2);
return flink(s1, s2);
}
return -1;
}
void QgsRelationEditorWidget::addFeature()
{
QgsAttributeMap keyAttrs;
const QgsVectorLayerTools* vlTools = mEditorContext.vectorLayerTools();
if ( mNmRelation.isValid() )
{
// n:m Relation: first let the user create a new feature on the other table
// and autocreate a new linking feature.
QgsFeature f;
if ( vlTools->addFeature( mNmRelation.referencedLayer(), QgsAttributeMap(), QgsGeometry(), &f ) )
{
QgsFeature flink( mRelation.referencingLayer()->fields() ); // Linking feature
flink.setAttribute( mRelation.fieldPairs().at( 0 ).first, mFeature.attribute( mRelation.fieldPairs().at( 0 ).second ) );
flink.setAttribute( mNmRelation.referencingFields().at( 0 ), f.attribute( mNmRelation.referencedFields().at( 0 ) ) );
mRelation.referencingLayer()->addFeature( flink );
updateUi();
}
}
else
{
QgsFields fields = mRelation.referencingLayer()->fields();
Q_FOREACH ( const QgsRelation::FieldPair& fieldPair, mRelation.fieldPairs() )
{
keyAttrs.insert( fields.indexFromName( fieldPair.referencingField() ), mFeature.attribute( fieldPair.referencedField() ) );
}
vlTools->addFeature( mDualView->masterModel()->layer(), keyAttrs );
}
}
void resolve(int fd, int nl, struct band3 *bnd)
{
CELL cvalue;
int *active;
int offset, isz, i, j, pass, activity, goagain, done;
active = (int *)G_calloc(nl, sizeof(int));
isz = sizeof(CELL);
/* select a direction when there are multiple non-flat links */
lseek(fd, bnd->sz, SEEK_SET);
for (i = 1; i < nl - 1; i += 1) {
read(fd, bnd->b[0], bnd->sz);
for (j = 1; j < bnd->ns - 1; j += 1) {
offset = j * isz;
if (G_is_c_null_value((void *)(bnd->b[0] + offset)))
continue;
memcpy(&cvalue, bnd->b[0] + offset, isz);
if (cvalue > 0)
cvalue = select_dir(cvalue);
memcpy(bnd->b[0] + offset, &cvalue, isz);
}
lseek(fd, -bnd->sz, SEEK_CUR);
write(fd, bnd->b[0], bnd->sz);
}
pass = 0;
for (i = 1; i < nl - 1; i += 1)
active[i] = 1;
/* select a direction when there are multiple flat links */
do {
done = 1;
pass += 1;
activity = 0;
lseek(fd, 0, SEEK_SET);
advance_band3(fd, bnd);
advance_band3(fd, bnd);
for (i = 1; i < nl - 1; i++) {
lseek(fd, (off_t) (i + 1) * bnd->sz, SEEK_SET);
advance_band3(fd, bnd);
if (!active[i])
continue;
done = 0;
active[i] = 0;
do {
goagain = 0;
for (j = 1; j < bnd->ns - 1; j += 1) {
flink(i, j, nl, bnd->ns,
(void *)bnd->b[0], (void *)bnd->b[1],
(void *)bnd->b[2], &active[i], &goagain);
if (goagain)
activity = 1;
}
} while (goagain);
lseek(fd, (off_t) i * bnd->sz, SEEK_SET);
write(fd, bnd->b[1], bnd->sz);
}
if (!activity) {
done = 1;
continue;
}
activity = 0;
lseek(fd, (off_t) (nl - 1) * bnd->sz, SEEK_SET);
retreat_band3(fd, bnd);
retreat_band3(fd, bnd);
for (i = nl - 2; i >= 1; i -= 1) {
lseek(fd, (off_t) (i - 1) * bnd->sz, SEEK_SET);
retreat_band3(fd, bnd);
if (!active[i])
continue;
done = 0;
active[i] = 0;
do {
goagain = 0;
for (j = 1; j < bnd->ns - 1; j++) {
flink(i, j, nl, bnd->ns,
(void *)bnd->b[0], (void *)bnd->b[1],
(void *)bnd->b[2], &active[i], &goagain);
if (goagain)
activity = 1;
}
} while (goagain);
lseek(fd, (off_t) i * bnd->sz, SEEK_SET);
write(fd, bnd->b[1], bnd->sz);
}
if (!activity) {
done = 1;
}
} while (!done);
G_free(active);
return;
}
