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-rw-r--r--t/helper/test-bloom.c97
1 files changed, 97 insertions, 0 deletions
diff --git a/t/helper/test-bloom.c b/t/helper/test-bloom.c
new file mode 100644
index 0000000..46e97b0
--- /dev/null
+++ b/t/helper/test-bloom.c
@@ -0,0 +1,97 @@
+#include "git-compat-util.h"
+#include "bloom.h"
+#include "test-tool.h"
+#include "commit.h"
+
+static struct bloom_filter_settings settings = DEFAULT_BLOOM_FILTER_SETTINGS;
+
+static void add_string_to_filter(const char *data, struct bloom_filter *filter) {
+ struct bloom_key key;
+ int i;
+
+ fill_bloom_key(data, strlen(data), &key, &settings);
+ printf("Hashes:");
+ for (i = 0; i < settings.num_hashes; i++){
+ printf("0x%08x|", key.hashes[i]);
+ }
+ printf("\n");
+ add_key_to_filter(&key, filter, &settings);
+}
+
+static void print_bloom_filter(struct bloom_filter *filter) {
+ int i;
+
+ if (!filter) {
+ printf("No filter.\n");
+ return;
+ }
+ printf("Filter_Length:%d\n", (int)filter->len);
+ printf("Filter_Data:");
+ for (i = 0; i < filter->len; i++) {
+ printf("%02x|", filter->data[i]);
+ }
+ printf("\n");
+}
+
+static void get_bloom_filter_for_commit(const struct object_id *commit_oid)
+{
+ struct commit *c;
+ struct bloom_filter *filter;
+ setup_git_directory();
+ c = lookup_commit(the_repository, commit_oid);
+ filter = get_or_compute_bloom_filter(the_repository, c, 1,
+ &settings,
+ NULL);
+ print_bloom_filter(filter);
+}
+
+static const char *bloom_usage = "\n"
+" test-tool bloom get_murmur3 <string>\n"
+" test-tool bloom generate_filter <string> [<string>...]\n"
+" test-tool get_filter_for_commit <commit-hex>\n";
+
+int cmd__bloom(int argc, const char **argv)
+{
+ setup_git_directory();
+
+ if (argc < 2)
+ usage(bloom_usage);
+
+ if (!strcmp(argv[1], "get_murmur3")) {
+ uint32_t hashed;
+ if (argc < 3)
+ usage(bloom_usage);
+ hashed = murmur3_seeded(0, argv[2], strlen(argv[2]));
+ printf("Murmur3 Hash with seed=0:0x%08x\n", hashed);
+ }
+
+ if (!strcmp(argv[1], "generate_filter")) {
+ struct bloom_filter filter;
+ int i = 2;
+ filter.len = (settings.bits_per_entry + BITS_PER_WORD - 1) / BITS_PER_WORD;
+ filter.data = xcalloc(filter.len, sizeof(unsigned char));
+
+ if (argc - 1 < i)
+ usage(bloom_usage);
+
+ while (argv[i]) {
+ add_string_to_filter(argv[i], &filter);
+ i++;
+ }
+
+ print_bloom_filter(&filter);
+ }
+
+ if (!strcmp(argv[1], "get_filter_for_commit")) {
+ struct object_id oid;
+ const char *end;
+ if (argc < 3)
+ usage(bloom_usage);
+ if (parse_oid_hex(argv[2], &oid, &end))
+ die("cannot parse oid '%s'", argv[2]);
+ init_bloom_filters();
+ get_bloom_filter_for_commit(&oid);
+ }
+
+ return 0;
+}