oidset: introduce 'oidset_size'

ttaylorr · gitster · commit f4781068faaf · 2020-04-15T09:20:29.000-07:00
Occasionally, it may be useful for callers to know the number of object
IDs in an oidset. Right now, the only way to compute this is to call
'kh_size' on the internal 'kh_set_oid_t'.

Similar to how we wrap other 'kh_*' functions over the 'oidset' type,
let's allow callers to compute this value by introducing 'oidset_size'.

We will add its first caller in the subsequent commit.

Signed-off-by: Taylor Blau &lt;me@ttaylorr.com&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git a/oidset.c b/oidset.c
@@ -36,6 +36,11 @@ void oidset_clear(struct oidset *set)
 	oidset_init(set, 0);
 }
 
+int oidset_size(struct oidset *set)
+{
+	return kh_size(&set->set);
+}
+
 void oidset_parse_file(struct oidset *set, const char *path)
 {
 	FILE *fp;
diff --git a/oidset.h b/oidset.h
@@ -55,6 +55,11 @@ int oidset_insert(struct oidset *set, const struct object_id *oid);
  */
 int oidset_remove(struct oidset *set, const struct object_id *oid);
 
+/**
+ * Returns the number of oids in the set.
+ */
+int oidset_size(struct oidset *set);
+
 /**
  * Remove all entries from the oidset, freeing any resources associated with
  * it.

Original file line number	Diff line number	Diff line change
`@@ -36,6 +36,11 @@ void oidset_clear(struct oidset *set)`
`36`	`36`	`oidset_init(set, 0);`
`37`	`37`	`}`
`38`	`38`
	`39`	`+int oidset_size(struct oidset *set)`
	`40`	`+{`
	`41`	`+ return kh_size(&set->set);`
	`42`	`+}`
	`43`	`+`
`39`	`44`	`void oidset_parse_file(struct oidset set, const char path)`
`40`	`45`	`{`
`41`	`46`	`FILE *fp;`