[PATCH 06/12] add range clone functions
Both single range clone and deeply clone are supported.
Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
---
line.c | 35 +++++++++++++++++++++++++++++++++++
line.h | 4 ++++
2 files changed, 39 insertions(+), 0 deletions(-)
diff --git a/line.c b/line.c
index 7b7f3f3..f765a03 100644
--- a/line.c
+++ b/line.c
@@ -370,6 +370,41 @@ void diff_line_range_append(struct diff_line_range *r, const char *arg)
r->ranges[r->nr - 1].arg = arg;
}
+struct diff_line_range *diff_line_range_clone(struct diff_line_range *r)
+{
+ struct diff_line_range *ret = xmalloc(sizeof(*ret));
+
+ DIFF_LINE_RANGE_INIT(ret);
+ ret->ranges = xcalloc(sizeof(struct range), r->nr);
+ memcpy(ret->ranges, r->ranges, sizeof(struct range) * r->nr);
+
+ ret->alloc = ret->nr = r->nr;
+
+ ret->spec = r->spec;
+ assert(ret->spec);
+ ret->spec->count++;
+
+ return ret;
+}
+
+struct diff_line_range *diff_line_range_clone_deeply(struct diff_line_range *r)
+{
+ struct diff_line_range *ret = NULL;
+ struct diff_line_range *tmp = NULL, *prev = NULL;
+
+ assert(r);
+ ret = tmp = prev = diff_line_range_clone(r);
+ r = r->next;
+ while (r) {
+ tmp = diff_line_range_clone(r);
+ prev->next = tmp;
+ prev = tmp;
+ r = r->next;
+ }
+
+ return ret;
+}
+
struct diff_line_range *diff_line_range_merge(struct diff_line_range *out,
struct diff_line_range *other)
{
diff --git a/line.h b/line.h
index a2f8545..b6f328c 100644
--- a/line.h
+++ b/line.h
@@ -110,6 +110,10 @@ extern void diff_line_range_append(struct diff_line_range *r, const char *arg);
extern void diff_line_range_clear(struct diff_line_range *r);
+extern struct diff_line_range *diff_line_range_clone(struct diff_line_range *r);
+
+extern struct diff_line_range *diff_line_range_clone_deeply(struct diff_line_range *r);
+
extern struct diff_line_range *diff_line_range_merge(struct diff_line_range *out,
struct diff_line_range *other);
--
1.7.1.577.g36cf0.dirty
Bo Yang <struggleyb.nku@gmail.com>