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authorDaniel Barkalow <barkalow@iabervon.org>2005-04-24 01:47:23 (GMT)
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-24 01:47:23 (GMT)
commitdd97f850c3fc049f4f0d8b1fd252d54bc1ba6994 (patch)
treec43426bf10b8a115fd038f96c40731fc0eae8341 /commit.c
parent90ffd0952f61717d93858b154d2505d0ba051b14 (diff)
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[PATCH] Add some functions for commit lists
This adds a function for inserting an item in a commit list, a function for sorting a commit list by date, and a function for progressively scanning a commit history from most recent to least recent. Signed-Off-By: Daniel Barkalow <barkalow@iabervon.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'commit.c')
-rw-r--r--commit.c58
1 files changed, 52 insertions, 6 deletions
diff --git a/commit.c b/commit.c
index 9f0668e..911f643 100644
--- a/commit.c
+++ b/commit.c
@@ -63,12 +63,9 @@ int parse_commit(struct commit *item)
bufptr += 46; /* "tree " + "hex sha1" + "\n" */
while (!memcmp(bufptr, "parent ", 7) &&
!get_sha1_hex(bufptr + 7, parent)) {
- struct commit_list *new_parent =
- malloc(sizeof(struct commit_list));
- new_parent->next = item->parents;
- new_parent->item = lookup_commit(parent);
- add_ref(&item->object, &new_parent->item->object);
- item->parents = new_parent;
+ struct commit *new_parent = lookup_commit(parent);
+ commit_list_insert(new_parent, &item->parents);
+ add_ref(&item->object, &new_parent->object);
bufptr += 48;
}
item->date = parse_commit_date(bufptr);
@@ -76,6 +73,14 @@ int parse_commit(struct commit *item)
return 0;
}
+void commit_list_insert(struct commit *item, struct commit_list **list_p)
+{
+ struct commit_list *new_list = malloc(sizeof(struct commit_list));
+ new_list->item = item;
+ new_list->next = *list_p;
+ *list_p = new_list;
+}
+
void free_commit_list(struct commit_list *list)
{
while (list) {
@@ -84,3 +89,44 @@ void free_commit_list(struct commit_list *list)
free(temp);
}
}
+
+static void insert_by_date(struct commit_list **list, struct commit *item)
+{
+ struct commit_list **pp = list;
+ struct commit_list *p;
+ while ((p = *pp) != NULL) {
+ if (p->item->date < item->date) {
+ break;
+ }
+ pp = &p->next;
+ }
+ commit_list_insert(item, pp);
+}
+
+
+void sort_by_date(struct commit_list **list)
+{
+ struct commit_list *ret = NULL;
+ while (*list) {
+ insert_by_date(&ret, (*list)->item);
+ *list = (*list)->next;
+ }
+ *list = ret;
+}
+
+struct commit *pop_most_recent_commit(struct commit_list **list)
+{
+ struct commit *ret = (*list)->item;
+ struct commit_list *parents = ret->parents;
+ struct commit_list *old = *list;
+
+ *list = (*list)->next;
+ free(old);
+
+ while (parents) {
+ parse_commit(parents->item);
+ insert_by_date(list, parents->item);
+ parents = parents->next;
+ }
+ return ret;
+}