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range-set: publish API for re-use by git-blame -L 

git-blame is slated to accept multiple -L ranges.  git-log already
accepts multiple -L's but its implementation of range-set, which
organizes and normalizes -L ranges, is private.  Publish the small
subset of range-set API which is needed for git-blame multiple -L
support.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Eric Sunshine 2013-08-06 09:59:36 -04:00 committed by Junio C Hamano
parent 0ddd47193c
commit c0babbe695
2 changed files with 17 additions and 5 deletions
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10
line-log.c
View File

@ -23,7 +23,7 @@ static void range_set_grow(struct range_set *rs, size_t extra)
/* Either initialization would be fine */
#define RANGE_SET_INIT {0}
static void range_set_init(struct range_set *rs, size_t prealloc)
void range_set_init(struct range_set *rs, size_t prealloc)
{
rs->alloc = rs->nr = 0;
rs->ranges = NULL;
@ -31,7 +31,7 @@ static void range_set_init(struct range_set *rs, size_t prealloc)
range_set_grow(rs, prealloc);
}
static void range_set_release(struct range_set *rs)
void range_set_release(struct range_set *rs)
{
free(rs->ranges);
rs->alloc = rs->nr = 0;
@ -56,7 +56,7 @@ static void range_set_move(struct range_set *dst, struct range_set *src)
}
/* tack on a _new_ range _at the end_ */
static void range_set_append_unsafe(struct range_set *rs, long a, long b)
void range_set_append_unsafe(struct range_set *rs, long a, long b)
{
assert(a <= b);
range_set_grow(rs, 1);
@ -65,7 +65,7 @@ static void range_set_append_unsafe(struct range_set *rs, long a, long b)
rs->nr++;
}
static void range_set_append(struct range_set *rs, long a, long b)
void range_set_append(struct range_set *rs, long a, long b)
{
assert(rs->nr == 0 || rs->ranges[rs->nr-1].end <= a);
range_set_append_unsafe(rs, a, b);
@ -107,7 +107,7 @@ static void range_set_check_invariants(struct range_set *rs)
* In-place pass of sorting and merging the ranges in the range set,
* to establish the invariants when we get the ranges from the user
*/
static void sort_and_merge_range_set(struct range_set *rs)
void sort_and_merge_range_set(struct range_set *rs)
{
int i;
int o = 0; /* output cursor */

12
line-log.h
View File

@ -25,6 +25,18 @@ struct diff_ranges {
struct range_set target;
};
extern void range_set_init(struct range_set *, size_t prealloc);
extern void range_set_release(struct range_set *);
/* Range includes start; excludes end */
extern void range_set_append_unsafe(struct range_set *, long start, long end);
/* New range must begin at or after end of last added range */
extern void range_set_append(struct range_set *, long start, long end);
/*
* In-place pass of sorting and merging the ranges in the range set,
* to sort and make the ranges disjoint.
*/
extern void sort_and_merge_range_set(struct range_set *);
/* Linked list of interesting files and their associated ranges. The
* list must be kept sorted by path.
*