summaryrefslogtreecommitdiffstats
path: root/oid-array.c
diff options
context:
space:
mode:
Diffstat (limited to 'oid-array.c')
-rw-r--r--oid-array.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/oid-array.c b/oid-array.c
new file mode 100644
index 0000000..73ba76e
--- /dev/null
+++ b/oid-array.c
@@ -0,0 +1,93 @@
+#include "cache.h"
+#include "oid-array.h"
+#include "hash-lookup.h"
+
+void oid_array_append(struct oid_array *array, const struct object_id *oid)
+{
+ ALLOC_GROW(array->oid, array->nr + 1, array->alloc);
+ oidcpy(&array->oid[array->nr++], oid);
+ array->sorted = 0;
+}
+
+static int void_hashcmp(const void *a, const void *b)
+{
+ return oidcmp(a, b);
+}
+
+void oid_array_sort(struct oid_array *array)
+{
+ if (array->sorted)
+ return;
+ QSORT(array->oid, array->nr, void_hashcmp);
+ array->sorted = 1;
+}
+
+static const struct object_id *oid_access(size_t index, const void *table)
+{
+ const struct object_id *array = table;
+ return &array[index];
+}
+
+int oid_array_lookup(struct oid_array *array, const struct object_id *oid)
+{
+ oid_array_sort(array);
+ return oid_pos(oid, array->oid, array->nr, oid_access);
+}
+
+void oid_array_clear(struct oid_array *array)
+{
+ FREE_AND_NULL(array->oid);
+ array->nr = 0;
+ array->alloc = 0;
+ array->sorted = 0;
+}
+
+
+int oid_array_for_each(struct oid_array *array,
+ for_each_oid_fn fn,
+ void *data)
+{
+ size_t i;
+
+ /* No oid_array_sort() here! See oid-array.h */
+
+ for (i = 0; i < array->nr; i++) {
+ int ret = fn(array->oid + i, data);
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
+int oid_array_for_each_unique(struct oid_array *array,
+ for_each_oid_fn fn,
+ void *data)
+{
+ size_t i;
+
+ oid_array_sort(array);
+
+ for (i = 0; i < array->nr; i = oid_array_next_unique(array, i)) {
+ int ret = fn(array->oid + i, data);
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
+void oid_array_filter(struct oid_array *array,
+ for_each_oid_fn want,
+ void *cb_data)
+{
+ size_t nr = array->nr, src, dst;
+ struct object_id *oids = array->oid;
+
+ for (src = dst = 0; src < nr; src++) {
+ if (want(&oids[src], cb_data)) {
+ if (src != dst)
+ oidcpy(&oids[dst], &oids[src]);
+ dst++;
+ }
+ }
+ array->nr = dst;
+}