From 1b593e1ea4d2af0f6444d9a7788d5d99abd6fde5 Mon Sep 17 00:00:00 2001
From: Vincent Ambo <Vincent Ambo>
Date: Sat, 11 Jan 2020 23:36:56 +0000
Subject: Squashed 'third_party/git/' content from commit cb71568594

git-subtree-dir: third_party/git
git-subtree-split: cb715685942260375e1eb8153b0768a376e4ece7
---
 sha1-array.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 sha1-array.c

(limited to 'sha1-array.c')

diff --git a/sha1-array.c b/sha1-array.c
new file mode 100644
index 000000000000..d922e94e3fc5
--- /dev/null
+++ b/sha1-array.c
@@ -0,0 +1,96 @@
+#include "cache.h"
+#include "sha1-array.h"
+#include "sha1-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);
+}
+
+static void oid_array_sort(struct oid_array *array)
+{
+	QSORT(array->oid, array->nr, void_hashcmp);
+	array->sorted = 1;
+}
+
+static const unsigned char *sha1_access(size_t index, void *table)
+{
+	struct object_id *array = table;
+	return array[index].hash;
+}
+
+int oid_array_lookup(struct oid_array *array, const struct object_id *oid)
+{
+	if (!array->sorted)
+		oid_array_sort(array);
+	return sha1_pos(oid->hash, array->oid, array->nr, sha1_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)
+{
+	int i;
+
+	/* No oid_array_sort() here! See the api-oid-array.txt docs! */
+
+	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)
+{
+	int i;
+
+	if (!array->sorted)
+		oid_array_sort(array);
+
+	for (i = 0; i < array->nr; i++) {
+		int ret;
+		if (i > 0 && oideq(array->oid + i, array->oid + i - 1))
+			continue;
+		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)
+{
+	unsigned 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;
+}
-- 
cgit 1.4.1