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authorJunio C Hamano <junkio@cox.net>2006-12-20 02:25:32 (GMT)
committerJunio C Hamano <junkio@cox.net>2006-12-20 19:26:11 (GMT)
commitd5db6c9ee79cfa1794d75847b8376430f08b203f (patch)
tree2ee917ce3959b7fd6d6e5bfc15c0e986a6c5b615 /revision.c
parent54851157acf707eb953eada2a84830897dde5c1d (diff)
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revision: --skip=<n>
This adds --skip=<n> option to revision traversal machinery. Documentation and test were added by Robert Fitzsimons. Signed-off-by: Robert Fitzsimons <robfitz@273k.net> Signed-off-by: Junio C Hamano <junkio@cox.net>
Diffstat (limited to 'revision.c')
-rw-r--r--revision.c46
1 files changed, 32 insertions, 14 deletions
diff --git a/revision.c b/revision.c
index 7b6f91f..5dc1e70 100644
--- a/revision.c
+++ b/revision.c
@@ -523,6 +523,7 @@ void init_revisions(struct rev_info *revs, const char *prefix)
revs->prefix = prefix;
revs->max_age = -1;
revs->min_age = -1;
+ revs->skip_count = -1;
revs->max_count = -1;
revs->prune_fn = NULL;
@@ -759,6 +760,10 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
revs->max_count = atoi(arg + 12);
continue;
}
+ if (!strncmp(arg, "--skip=", 7)) {
+ revs->skip_count = atoi(arg + 7);
+ continue;
+ }
/* accept -<digit>, like traditional "head" */
if ((*arg == '-') && isdigit(arg[1])) {
revs->max_count = atoi(arg + 1);
@@ -1122,23 +1127,11 @@ static int commit_match(struct commit *commit, struct rev_info *opt)
commit->buffer, strlen(commit->buffer));
}
-struct commit *get_revision(struct rev_info *revs)
+static struct commit *get_revision_1(struct rev_info *revs)
{
- struct commit_list *list = revs->commits;
-
- if (!list)
+ if (!revs->commits)
return NULL;
- /* Check the max_count ... */
- switch (revs->max_count) {
- case -1:
- break;
- case 0:
- return NULL;
- default:
- revs->max_count--;
- }
-
do {
struct commit_list *entry = revs->commits;
struct commit *commit = entry->item;
@@ -1205,3 +1198,28 @@ struct commit *get_revision(struct rev_info *revs)
} while (revs->commits);
return NULL;
}
+
+struct commit *get_revision(struct rev_info *revs)
+{
+ struct commit *c = NULL;
+
+ if (0 < revs->skip_count) {
+ while ((c = get_revision_1(revs)) != NULL) {
+ if (revs->skip_count-- <= 0)
+ break;
+ }
+ }
+
+ /* Check the max_count ... */
+ switch (revs->max_count) {
+ case -1:
+ break;
+ case 0:
+ return NULL;
+ default:
+ revs->max_count--;
+ }
+ if (c)
+ return c;
+ return get_revision_1(revs);
+}