[PATCH v3 07/13] add range clone functions
Both single range clone and deeply clone are supported.
Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
---
line.c | 39 +++++++++++++++++++++++++++++++++++++++
line.h | 4 ++++
2 files changed, 43 insertions(+), 0 deletions(-)
diff --git a/line.c b/line.c
index a6bcbdf..ba96d7d 100644
--- a/line.c
+++ b/line.c
@@ -378,6 +378,45 @@ 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));
+ int i = 0;
+
+ DIFF_LINE_RANGE_INIT(ret);
+ ret->ranges = xcalloc(r->nr, sizeof(struct range));
+ memcpy(ret->ranges, r->ranges, sizeof(struct range) * r->nr);
+
+ ret->alloc = ret->nr = r->nr;
+
+ for (; i < ret->nr; i++)
+ PRINT_PAIR_INIT(&ret->ranges[i].pair);
+
+ 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 0eb03bd..885e985 100644
--- a/line.h
+++ b/line.h
@@ -112,6 +112,10 @@ 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);
--
1.7.0.2.273.gc2413.dirty
Bo Yang <struggleyb.nku@gmail.com>