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-rw-r--r--line-log.c39
1 files changed, 26 insertions, 13 deletions
diff --git a/line-log.c b/line-log.c
index b29f981..717638b 100644
--- a/line-log.c
+++ b/line-log.c
@@ -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);
@@ -107,16 +107,19 @@ 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 = 1; /* output cursor */
+ int o = 0; /* output cursor */
qsort(rs->ranges, rs->nr, sizeof(struct range), range_cmp);
- for (i = 1; i < rs->nr; i++) {
- if (rs->ranges[i].start <= rs->ranges[o-1].end) {
- rs->ranges[o-1].end = rs->ranges[i].end;
+ for (i = 0; i < rs->nr; i++) {
+ if (rs->ranges[i].start == rs->ranges[i].end)
+ continue;
+ if (o > 0 && rs->ranges[i].start <= rs->ranges[o-1].end) {
+ if (rs->ranges[o-1].end < rs->ranges[i].end)
+ rs->ranges[o-1].end = rs->ranges[i].end;
} else {
rs->ranges[o].start = rs->ranges[i].start;
rs->ranges[o].end = rs->ranges[i].end;
@@ -288,7 +291,6 @@ static void line_log_data_insert(struct line_log_data **list,
if (p) {
range_set_append_unsafe(&p->ranges, begin, end);
- sort_and_merge_range_set(&p->ranges);
free(path);
return;
}
@@ -562,12 +564,14 @@ parse_lines(struct commit *commit, const char *prefix, struct string_list *args)
struct nth_line_cb cb_data;
struct string_list_item *item;
struct line_log_data *ranges = NULL;
+ struct line_log_data *p;
for_each_string_list_item(item, args) {
const char *name_part, *range_part;
char *full_name;
struct diff_filespec *spec;
long begin = 0, end = 0;
+ long anchor;
name_part = skip_range_arg(item->string);
if (!name_part || *name_part != ':' || !name_part[1])
@@ -586,17 +590,23 @@ parse_lines(struct commit *commit, const char *prefix, struct string_list *args)
cb_data.lines = lines;
cb_data.line_ends = ends;
+ p = search_line_log_data(ranges, full_name, NULL);
+ if (p && p->ranges.nr)
+ anchor = p->ranges.ranges[p->ranges.nr - 1].end + 1;
+ else
+ anchor = 1;
+
if (parse_range_arg(range_part, nth_line, &cb_data,
- lines, &begin, &end,
+ lines, anchor, &begin, &end,
full_name))
die("malformed -L argument '%s'", range_part);
+ if (lines < end || ((lines || begin) && lines < begin))
+ die("file %s has only %lu lines", name_part, lines);
if (begin < 1)
begin = 1;
if (end < 1)
end = lines;
begin--;
- if (lines < end || lines < begin)
- die("file %s has only %ld lines", name_part, lines);
line_log_data_insert(&ranges, full_name, begin, end);
free_filespec(spec);
@@ -604,6 +614,9 @@ parse_lines(struct commit *commit, const char *prefix, struct string_list *args)
ends = NULL;
}
+ for (p = ranges; p; p = p->next)
+ sort_and_merge_range_set(&p->ranges);
+
return ranges;
}