shortlog: use strset from strmap.h

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/shortlog.c

@@ -10,6 +10,7 @@
 #include "shortlog.h"
 #include "parse-options.h"
 #include "trailer.h"
+#include "strmap.h"
 
 static char const * const shortlog_usage[] = {
 	N_("git shortlog [<options>] [<revision-range>] [[--] <path>...]"),
@@ -169,60 +170,6 @@ static void read_from_stdin(struct shortlog *log)
 	strbuf_release(&oneline);
 }
 
-struct strset_item {
-	struct hashmap_entry ent;
-	char value[FLEX_ARRAY];
-};
-
-struct strset {
-	struct hashmap map;
-};
-
-#define STRSET_INIT { { NULL } }
-
-static int strset_item_hashcmp(const void *hash_data,
-			       const struct hashmap_entry *entry,
-			       const struct hashmap_entry *entry_or_key,
-			       const void *keydata)
-{
-	const struct strset_item *a, *b;
-
-	a = container_of(entry, const struct strset_item, ent);
-	if (keydata)
-		return strcmp(a->value, keydata);
-
-	b = container_of(entry_or_key, const struct strset_item, ent);
-	return strcmp(a->value, b->value);
-}
-
-/*
- * Adds "str" to the set if it was not already present; returns true if it was
- * already there.
- */
-static int strset_check_and_add(struct strset *ss, const char *str)
-{
-	unsigned int hash = strhash(str);
-	struct strset_item *item;
-
-	if (!ss->map.table)
-		hashmap_init(&ss->map, strset_item_hashcmp, NULL, 0);
-
-	if (hashmap_get_from_hash(&ss->map, hash, str))
-		return 1;
-
-	FLEX_ALLOC_STR(item, value, str);
-	hashmap_entry_init(&item->ent, hash);
-	hashmap_add(&ss->map, &item->ent);
-	return 0;
-}
-
-static void strset_clear(struct strset *ss)
-{
-	if (!ss->map.table)
-		return;
-	hashmap_clear_and_free(&ss->map, struct strset_item, ent);
-}
-
 static void insert_records_from_trailers(struct shortlog *log,
 					 struct strset *dups,
 					 struct commit *commit,
@@ -253,7 +200,7 @@ static void insert_records_from_trailers(struct shortlog *log,
 		if (!parse_ident(log, &ident, value))
 			value = ident.buf;
 
-		if (strset_check_and_add(dups, value))
+		if (!strset_add(dups, value))
 			continue;
 		insert_one_record(log, value, oneline);
 	}
@@ -291,7 +238,7 @@ void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 				      log->email ? "%aN <%aE>" : "%aN",
 				      &ident, &ctx);
 		if (!HAS_MULTI_BITS(log->groups) ||
-		    !strset_check_and_add(&dups, ident.buf))
+		    strset_add(&dups, ident.buf))
 			insert_one_record(log, ident.buf, oneline_str);
 	}
 	if (log->groups & SHORTLOG_GROUP_COMMITTER) {
@@ -300,7 +247,7 @@ void shortlog_add_commit(struct shortlog *log, struct commit *commit)
 				      log->email ? "%cN <%cE>" : "%cN",
 				      &ident, &ctx);
 		if (!HAS_MULTI_BITS(log->groups) ||
-		    !strset_check_and_add(&dups, ident.buf))
+		    strset_add(&dups, ident.buf))
 			insert_one_record(log, ident.buf, oneline_str);
 	}
 	if (log->groups & SHORTLOG_GROUP_TRAILER) {